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  • Cell Press  (26.524)
  • Oxford University Press  (19.048)
  • Nature Publishing Group  (16.829)
  • American Chemical Society (ACS)
  • 2020-2022  (42.235)
  • 1935-1939  (20.166)
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  • 1
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    Retrospective short-term forecasting experiment in Italy based on the occurrence of strong (fore) shocks (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-03-15
    Beschreibung: In a recent work we computed the relative frequencies with which strong shocks (4.0≤Mw〈5.0), widely felt by the population were followed in the same area by potentially destructive main shocks (Mw≥5.0) in Italy. Assuming the stationarity of the seismic release properties, such frequencies can be tentatively used to estimate the probabilities of potentially destructive shocks after the occurrence of future strong shocks. This allows us to set up an alarm-based forecasting hypothesis related to strong foreshocks occurrence. Such hypothesis is tested retrospectively on the data of a homogenized seismic catalogue of the Italian area against a purely random hypothesis that simply forecasts the target main shocks proportionally to the space-time fraction occupied by the alarms. We compute the latter fraction in two ways a) as the ratio between the average time covered by the alarms in each area and the total duration of the forecasting experiment (60 years) and b) as the same ratio but weighted by the past frequency of occurrence of earthquakes in each area. In both cases the overall retrospective performance of our forecasting algorithm is definitely better than the random case. Considering an alarm duration of three months, the algorithm retrospectively forecasts more than 70% of all shocks with Mw5.5 occurred in Italy from 1960 to 2019 with a total space-time fraction covered by the alarms of the order of 2%. Considering the same space-time coverage, the algorithm is also able to retrospectively forecasts more than 40% of the first main shocks with Mw5.5 of the seismic sequences occurred in the same time interval. Given the good reliability of our results, the forecasting algorithm is set and ready to be tested also prospectively, in parallel to other ongoing procedures operating on the Italian territory.
    Beschreibung: This paper benefitted from funding provided by the European Union within the ambit of the H2020 project RISE (No. 821115), which in particular fully financed the PhD grant of one of the authors (E.B.).
    Beschreibung: Published
    Beschreibung: 1192–1206
    Beschreibung: 6T. Studi di pericolosità sismica e da maremoto
    Beschreibung: JCR Journal
    Schlagwort(e): Earthquake interaction ; Statistical seismology ; forecasting, ; prediction ; 04.06. Seismology
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 2
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    Thermal structure of a vanishing subduction system. An example of seismically-derived crustal temperature along the Italian peninsula (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-10-16
    Beschreibung: This article has been accepted for publication in Geophysical Journal International ©: The Authors 2019. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Uploaded in accordance with the publisher's self-archiving policy.
    Beschreibung: The active tectonic processes in convergent margins confer a high degree of complexity to the crust. Determining the thermal structure is, therefore, key to better elucidate the nature of those processes. In order to reconstruct the thermal structure of the crust beneath the Italian peninsula, we combine the most recent and accurate shear-wave velocity model that is currently available with thermodynamic modelling, assuming a global average crustal composition with no lateral variations. Our model, presented in terms of Moho temperature and crustal thermal gradients, shows a very good agreement with the known thermal anomalies associated with the backarc spreading related to the Apennine subduction. Importantly, we envisage a new anomalous region of high Moho temperatures in NW Italy (T 〉 800 degrees C at 30 km), at the transition between the Alps and Apennine orogens. The lowest temperatures of our model, corresponding to geothermal gradients 〈 19 degrees C km(-1), are obtained in the still active but slow-convergent portion of the northern Apennine. Moho temperatures increase moving southwards along the Apennine chain, an observation that is coherent with the evidence of ceasing subduction and consequent rebalancing of the depressed isotherms along the slab. Our results suggest that a thermal structure in different tectonic settings can be inferred with acceptable uncertainties based on absolute seismic velocity models. In this sense, our approach can be extended to any other region.
    Beschreibung: Published
    Beschreibung: 239–247
    Beschreibung: 1T. Struttura della Terra
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 3
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    Aseismic transient driving the swarm-like seismic sequence in the Pollino range, Southern Italy (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-12-15
    Beschreibung: This article has been accepted for publication in Geophysical Journal International ©: The Authors 2015. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. Uploaded in accordance with the publisher's self-archiving policy.
    Beschreibung: ectonic earthquake swarms challenge our understanding of earthquake processes since it is difficult to link observations to the underlying physical mechanisms and to assess the hazard they pose. Transient forcing is thought to initiate and drive the spatio-temporal release of energy during swarms. The nature of the transient forcing may vary across sequences and range from aseismic creeping or transient slip to diffusion of pore pressure pulses to fluid redistribution and migration within the seismogenic crust. Distinguishing between such forcing mechanisms may be critical to reduce epistemic uncertainties in the assessment of hazard due to seismic swarms, because it can provide information on the frequency–magnitude distribution of the earthquakes (often deviating from the assumed Gutenberg–Richter relation) and on the expected source parameters influencing the ground motion (for example the stress drop). Here we study the ongoing Pollino range (Southern Italy) seismic swarm, a long-lasting seismic sequence with more than five thousand events recorded and located since October 2010. The two largest shocks (magnitude M w = 4.2 and M w = 5.1) are among the largest earthquakes ever recorded in an area which represents a seismic gap in the Italian historical earthquake catalogue. We investigate the geometrical, mechanical and statistical characteristics of the largest earthquakes and of the entire swarm. We calculate the focal mechanisms of the M l 〉 3 events in the sequence and the transfer of Coulomb stress on nearby known faults and analyse the statistics of the earthquake catalogue. We find that only 25 per cent of the earthquakes in the sequence can be explained as aftershocks, and the remaining 75 per cent may be attributed to a transient forcing. The b-values change in time throughout the sequence, with low b-values correlated with the period of highest rate of activity and with the occurrence of the largest shock. In the light of recent studies on the palaeoseismic and historical activity in the Pollino area, we identify two scenarios consistent with the observations and our analysis: This and past seismic swarms may have been ‘passive’ features, with small fault patches failing on largely locked faults, or may have been accompanied by an ‘active’, largely aseismic, release of a large portion of the accumulated tectonic strain. Those scenarios have very different implications for the seismic hazard of the area.
    Beschreibung: Published
    Beschreibung: 1553–1567
    Beschreibung: 4T. Sismicità dell'Italia
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 4
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    Non-stability of the noise HVSR at sites near or on topographic heights (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-01-18
    Beschreibung: The horizontal to vertical spectral ratio (HVSR) of seismic noise is often used to investigate site effects, and it is usually assumed to be a stable feature of the site considered. Here we show that such an assumption is not always justified, and may lead to incorrect conclusions. The HVSR analysis was performed on ambient seismic noise recordings lasting from weeks to months at many sites in Calabria, Italy. Results show a variety of site effects, from the resonance of a shallow sedimentary layer to the polarized amplification of horizontal ground motion associated with topographic effects. We describe the results of seven sites whose HVSR is characterized by dual content: one that is persistent, and another appearing only occasionally. Two sites very near the coast of the Tyrrhenian sea and five sites in the Calabrian Arc mountains show the most remarkable results. The shape of the HVSR changes significantly at these sites when the amplitude of background noise increases in a broad frequency band during periods of bad weather. The occasional contribution to the HVSR consists of one or more peaks, depending on the site, that appear only when the amplitude of ambient noise is higher than usual. The seven sites where we observe the HVSR variability are all located in complex geological environments, on mountains, ridges or foothills. A variation of the HVSR correlated with the day–night cycle is also observed at some of these sites.
    Beschreibung: Published
    Beschreibung: 2162–2171
    Beschreibung: 1T. Struttura della Terra
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 5
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    The Shallow Plumbing System of Piton de la Fournaise Volcano (La Reunion Island, Indian Ocean) Revealed by the Major 2007 Caldera-Forming Eruption (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-02-10
    Beschreibung: The 2007 caldera-forming eruption of Piton de la Fournaise (PdF) erupted the largest volume of magma (210 Mm3)recorded at this volcano in at least three centuries. Major and trace element and Sr^Nd isotope data for bulk-rocks, groundmasses and olivine phenocrysts have been combined with melt inclusion data (major, trace and volatile elements) to track magma evolution over the whole eruptive sequence. We show that each eruptive phase had a distinctive geochemical and petrological signature and that caldera collapse on 5 April was preceded by a marked shift in bulk magma composition and crystal content and size. Aphyric basalt erupted at the beginning of the sequence (February 2007) had relatively high Sr isotope ratio (87Sr/86Sr ¼ 0·70420^0·704180) and low Nd isotopic ratio(143Nd/144Nd ¼ 0·51285^0·51286). Olivine-basalts extruded on2^5 April just before caldera collapse are less enriched in radiogenic Sr (87Sr/86Sr ¼ 0·70412^0·70416), but characterized by the same Nd isotopic composition. This magma is interpreted as a new deep input, which pressurized the shallow PdF plumbing system and triggered the 2007 activity. Post-collapse oceanite lavas represent the main volume of magma extruded in 2007. Their bulk-rocks and groundmasses have 87Sr/86Sr (0·70418) intermediate between those of February and 5 April, and similar to those of the March 2007 and 2001^2006 lavas.We show that the Steady State Basalts (SSB) commonly erupted at PdF are hybrid melts, which result from multistep mixing between ‘alkaline’and ‘transitional’end-members. Our results lead us to propose a new model of the PdF plumbing system to reconcile the petrological, geochemical and geophysical observations: (1) the shallow portion (above sea level) of the PdF plumbing system hosts several small sills, in which magma experiences variable degrees of degassing, cooling and crystallization; (2) oceanite lavas result from the withdrawal of shallow harrisitic mushes stored at low pressures (548 MPa; 51800^2400 m depth) below both the volcano summit and its eastern flank; (3) water degassing plays a major role in fast magma crystallization at shallow depths. Multistep ascent and periodic extrusion of the shallow magmas is promoted by injections of deeper and hotter basaltic magma, containing up to 1·3 wt % H2O and 1630 ppm S. In 2007, the new deep input was the ultimate source of the large excess in sulfur degassing detected by satellites. Lateral draining and intrusion of magma below the eastern flank of the volcano are the cause of major volcano deformation, flank sliding and summit caldera collapse.
    Beschreibung: Published
    Beschreibung: 1287-1315
    Beschreibung: 2V. Struttura e sistema di alimentazione dei vulcani
    Beschreibung: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Beschreibung: 4V. Processi pre-eruttivi
    Beschreibung: 6A. Geochimica per l'ambiente e geologia medica
    Beschreibung: JCR Journal
    Schlagwort(e): Piton de la Fournaise ; plumbing system ; magma reservoir ; caldera collapse ; melt inclusions ; volatile budget ; isotope geochemistry ; basalt
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 6
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    Numerical analysis of interseismic, coseismic and postseismic phases for normal and reverse faulting earthquakes in Italy (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-02-23
    Beschreibung: The preparation, initiation, and occurrence dynamics of earthquakes in Italy are governed by several frequently unknown physical mechanisms and parameters. Understanding these mechanisms is crucial for developing new techniques and approaches for earthquake monitoring and hazard assessments. Here, we develop a first-order numerical model simulating quasi-static crustal interseismic loading, coseismic brittle episodic dislocations, and postseismic relaxation for extensional and compressional earthquakes in Italy based on a common framework of lithostatic and tectonic forces. Our model includes an upper crust, where the fault is locked, and a deep crust, where the fault experiences steady shear.
    Beschreibung: Published
    Beschreibung: 627–645
    Beschreibung: 2T. Deformazione crostale attiva
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 7
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    An automatically generated high-resolution earthquake catalogue for the 2016–2017 Central Italy seismic sequence, including P and S phase arrival times (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-03-24
    Beschreibung: The 2016–17 central Italy earthquake sequence began with the first mainshock near the town of Amatrice on August 24 (MW 6.0), and was followed by two subsequent large events near Visso on October 26 (MW 5.9) and Norcia on October 30 (MW 6.5), plus a cluster of 4 events with MW 〉 5.0 within few hours on January 18, 2017. The affected area had been monitored before the sequence started by the permanent Italian National Seismic Network (RSNC), and was enhanced during the sequence by temporary stations deployed by the National Institute of Geophysics and Volcanology and the British Geological Survey. By the middle of September, there was a dense network of 155 stations, with a mean separation in the epicentral area of 6–10 km, comparable to the most likely earthquake depth range in the region. This network configuration was kept stable for an entire year, producing 2.5 TB of continuous waveform recordings. Here we describe how this data was used to develop a large and comprehensive earthquake catalogue using the Complete Automatic Seismic Processor (CASP) procedure. This procedure detected more than 450,000 events in the year following the first mainshock, and determined their phase arrival times through an advanced picker engine (RSNI-Picker2), producing a set of about 7 million P- and 10 million S-wave arrival times. These were then used to locate the events using a non-linear location (NLL) algorithm, a 1D velocity model calibrated for the area, and station corrections and then to compute their local magnitudes (ML). The procedure was validated by comparison of the derived data for phase picks and earthquake parameters with a handpicked reference catalogue (hereinafter referred to as ‘RefCat’). The automated procedure takes less than 12 hours on an Intel Core-i7 workstation to analyse the primary waveform data and to detect and locate 3000 events on the most seismically active day of the sequence. This proves the concept that the CASP algorithm can provide effectively real-time data for input into daily operational earthquake forecasts, The results show that there have been significant improvements compared to RefCat obtained in the same period using manual phase picks. The number of detected and located events is higher (from 84,401 to 450,000), the magnitude of completeness is lower (from ML 1.4 to 0.6), and also the number of phase picks is greater with an average number of 72 picked arrival for a ML = 1.4 compared with 30 phases for RefCat using manual phase picking. These propagate into formal uncertainties of ± 0.9km in epicentral location and ± 1.5km in depth for the enhanced catalogue for the vast majority of the events. Together, these provide a significant improvement in the resolution of fine structures such as local planar structures and clusters, in particular the identification of shallow events occurring in parts of the crust previously thought to be inactive. The lower completeness magnitude provides a rich data set for development and testing of analysis techniques of seismic sequences evolution, including real-time, operational monitoring of b-value, time-dependent hazard evaluation and aftershock forecasting.
    Beschreibung: Published
    Beschreibung: 555–571
    Beschreibung: 3T. Fisica dei terremoti e Sorgente Sismica
    Beschreibung: JCR Journal
    Schlagwort(e): 04.06. Seismology
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 8
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    Erratum: On seismic ambient noise cross-correlation and surface-wave attenuation (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: erratum paper
    Beschreibung: Published
    Beschreibung: 1090-1092
    Beschreibung: 1T. Struttura della Terra
    Beschreibung: JCR Journal
    Schlagwort(e): Theoretical seismology ; Seismic attenuation ; Seismic noise ; Surface waves ; Free oscillations ; Seismic interferometry ; 04.06. Seismology ; 04.01. Earth Interior
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
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    Crustal structure of the Azores Archipelago from Rayleigh wave ellipticity data (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: This article has been accepted for publication inGeophysical Journal International ©The Author(s) 2020. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
    Beschreibung: Determining the crustal structure of ocean island volcanoes is important to understand the formation and tectonic evolution of the oceanic lithosphere and tectonic swells in marine settings, and to assess seismic hazard in the islands. The Azores Archipelago is located near a triple junction system and is possibly under the influence of a mantle plume, being at the locus of a wide range of geodynamic processes. However, its crustal structure is still poorly constrained and debated due to the limited seismic coverage of the region and the peculiar linear geometry of the islands. To address these limitations, in this study we invert teleseismic Rayleigh wave ellipticity measurements for 1-D shear wave speed (VS) crustal models of the Azores Archipelago. Moreover, we test the reliability of these new models by using them in independent moment tensor inversions of local seismic data and demonstrate that our models improve the waveform fit compared to previous models. We find that data from the westernmost seismic stations used in this study require a shallower Moho depth (∼10 km) than data from stations in the eastern part of the archipelago (∼13–16 km). This apparent increase in the Moho depth with increasing distance from the mid-Atlantic ridge (MAR) is expected. However, the rate at which Moho deepens away from the MAR is greater than that predicted from a half-space cooling model, suggesting that local tectonic perturbations have modified crustal structure. The 1-D VS models obtained beneath the westernmost seismic stations also show higher wave speeds than for the easternmost stations, which correlates well with the ages of the islands except Santa Maria Island. We interpret the relatively low VS profile found beneath Santa Maria Island as resulting from underplating, which agrees with previous geological studies of the island. Compared to a recent receiver function study of the region, the shallow structure (top ∼2 km) in our models shows lower shear wave speed, which may have important implications for future hazard studies of the region. More generally, the new seismic crustal models we present in this study will be useful to better understand the tectonics, seismicity, moment tensors and strong ground motions in the region.
    Beschreibung: Published
    Beschreibung: 1232–1247
    Beschreibung: 5T. Sismologia, geofisica e geologia per l'ingegneria sismica
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 10
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    Changing modes and rates of mafic magma supply at Pantelleria (Sicily Channel, Southern Italy): new perspectives on the volcano factory drawn upon olivine records (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: The island of Pantelleria, located in the Sicily Channel Rift Zone (Italy), has been the site of violent peralkaline silicic magmatism alternating with minor effusive to low-intensity Strombolian erup- tions of basaltic composition. The basaltic rock suites exposed on the island were sampled to in- vestigate the plumbing system dynamics through the study of chemical stratigraphy and temporal records of olivine crystals. Our petrographic and geochemical observations, together with the com- positional variability of olivine, suggest different evolutionary histories for basaltic magmas erupted over two major periods divided by the 􏰃45 ka Green Tuff (GT) eruption. Core-to-rim com- positional traverses across olivine crystals document different types of zoning. We recognized oliv- ine zones affected by Fo oscillations at very fine scales in the inner cores, rims and/or in intermedi- ate portions of crystals and used them to reconstruct the residence and passage of crystals through different magmatic environments, with P–T–ƒO2 and compositional characteristics con- strained by thermodynamic modeling. The sequence of magmatic environments evidenced by oliv- ine zoning indicate that the pre-GT volcanic period was dominated by injection at shallow crustal levels (􏰃300–200 MPa) of primitive melts, initially moving from a deep storage zone at the crust- mantle boundary. Supply of this magma significantly decreased after the GT eruption, while the dy- namics of magma transfer within the upper portion of the plumbing system were greatly enhanced. The diffusive relaxation of olivine zoning provided the timing of storage and migration of a crystal through different environments. For magmas feeding the ancient (〉45 ka) basaltic activ- ity we retrieved transfer histories that are much longer (up to 􏰃3 years) if compared with those cal- culated for the post-GT basalts (1–9 months). The compositional and temporal dataset presented in this study supports the idea that the GT eruption and the subsequent collapse of the volcanic edi- fice could have caused major changes to the internal structural setting of Pantelleria, creating more favorable conditions for the migration of magmas in the upper portions of the plumbing system.
    Beschreibung: Published
    Beschreibung: egaa05
    Beschreibung: 2V. Struttura e sistema di alimentazione dei vulcani
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 11
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    The Deep Plumbing System of Ischia: a Physico-chemical Window on the Fluid-saturated and CO2-sustained Neapolitan Volcanism (Southern Italy) (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: Ischia, a volcanic island located 18 miles SW of Naples (Southern Italy), is a densely populated active caldera that last erupted in AD 1302. Melt inclusions in phenocrysts of the Vateliero and Cava Nocelle shoshonite^latite eruptive products (6th to 4th centuries BC) constrain the structure and nature of the Ischia deep magmatic feeding system.Their geochemical characteristics make Ischia a natural borehole for probing the physico-chemical conditions of magma generation in mantle contaminated by slab-derived fluids or melts, largely dominated by CO2.Volatile concentrations in olivine-hosted melt inclusions require gas^melt equilibria at between 3 and 18 km depth. In agreement with what has already been demonstrated at the other neighboring Neapolitan volcanoes (Procida, Campi Flegrei caldera and Somma^Vesuvius volcanic complex), a major crystallization depth at 8^10 km has been identified.The analyzed melt inclusions provide clear evidence for CO2-dominated gas fluxing and consequent dehydration of magma batches stagnating at crustal discontinuities. Gas fluxing is further supported by selective enrichment in K owing to fluid-transfer during magma differentiation.This takes place under oxidized conditions (Fe3þ /Fe 0·3) that can be fixed by an equimolar proportion of divalent and trivalent iron in the melt if post-entrapment crystallization of the host olivine is discarded.The melt inclusion data, together with data from the literature for other Neapolitan volcanoes, show that magmatism and volcanism in the Neapolitan area, despite differences in composition and eruption dynamics, are closely linked to supercritical CO2-rich fluids. These fluids are produced by devolatilization of subducting terrigenous^pelagic metasediments and infiltrate the overlying mantle wedge, generate magmas and control their ascent up to eruption. Geochemical characteristics of Ischia and the other Neapolitan volcanoes reveal that the extent of fluid or melt contamination of the pre-subduction asthenospheric mantle wedge was similar among these volcanoes. However, differences in the isotopic compositions of the erupted magmas (more enriched in radiogenic Sr at Ischia, Campi Flegrei and Somma^Vesuvius with respect to Procida) and the amount of H2O in the plumbing system of these volcanoes (almost double at Ischia, Campi Flegrei and Somma^Vesuvius than at Procida) reflect the different flow-rates of deep slab-derived fluids or melts through the mantle wedge, which, in turn, control the amount of generated magma.The high bulk permeability of the lithosphere below Ischia, Campi Flegrei and Somma^Vesuvius, determined by the occurrence of intersecting NW^SE and NE^SW regional fault systems, favours fluid ascent and accumulation at crustal levels, with consequent larger magma production and storage than at Procida, located along the NE^SW system.
    Beschreibung: Published
    Beschreibung: 951-984
    Beschreibung: 2V. Struttura e sistema di alimentazione dei vulcani
    Beschreibung: 3V. Proprietà chimico-fisiche dei magmi e dei prodotti vulcanici
    Beschreibung: 4V. Processi pre-eruttivi
    Beschreibung: 6A. Geochimica per l'ambiente e geologia medica
    Beschreibung: JCR Journal
    Schlagwort(e): CO2-fluxing ; melt inclusions ; redox state ; trachybasalts
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 12
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    Sulphur behaviour and redox conditions in etnean magmas during magma differentiation and degassing (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-06-21
    Beschreibung: Sulphur behaviour and variations in redox conditions during magma differentiation and degassing in the Mt Etna (Italy) volcanic system have been explored by integrating the study of olivine-hosted melt inclusions (MIs) with an experimental survey of sulphur solubility in hydrous basaltic magmas. Sulphur solubility experiments were performed at conditions relevant to the Etnean plumbing system (1200 C, 200MPa and oxygen fugacity between NNOþ0 2 and NNOþ1 7, with NNO being the nickel–nickel oxide buffer), and their results confirm the important control of oxygen fugacity (fO2) on S abundance in mafic magmas and on S partitioning between fluid and melt phases (DSfluid/melt). The observed DSfluid/melt value increases from 5164 to 14666 when fO2 decreases from NNOþ1 760 5 to NNOþ0 3. Based on the calculated DSfluid/melt and a careful selection of previously published data, an empirical model is proposed for basaltic magmas to predict the variation of DSfluid/melt values with variations in P (25–300 MPa), T (1030–1200 C) and fO2 (between NNO– 0 8 and NNOþ2 4). Olivine-hosted melt inclusions (Fo89-91) from tephra of the prehistoric (4 ka BP) sub-plinian picritic eruption, named FS (‘Fall Stratified’), have been investigated for their major element compositions, volatile contents and iron speciation (expressed as Fe3þ/PFe ratio). These primitive MIs present S content from 235677 to 34456168 ppm, and oxygen fugacity values, estimated from Fe3þ/PFe ratios, range from NNOþ0 760 2 to NNOþ1 660 2. Iron speciation has also been investigated in more evolved and volatile-poorer Etnean MIs. The only primitive melt inclusion from the Mt Spagnolo eruption (4–15 ka BP) presents a S content of 1515649ppm and an estimated fO2 of NNOþ1 460 1. The more evolved MIs (from 2002–2003, 2006, 2008–2009 and 2013 eruptions) have S content lower than 500 ppm, and their Fe3þ/RFe ratios result in fO2 between NNO– 0 960 1 and NNOþ0 460 1. Redox conditions and S behaviour in Etnean magmas during degassing and fractional crystallization were modelled coupling MELTS code with our empirical DSfluid/melt model. Starting from an FS-type magma composition and upon decrease of T and P, fractional crystallization of olivine, clinopyroxene, spinel and plagioclase causes a significant fO2 decrease. The fO2 reduction, in turn, causes a decrease in sulphur solubility and an increase in DSfluid/melt, promoting S exsolution during magma ascent, which further enhances the reduction of fO2. For the evolved MIs of 2002–2013 eruptions, magma differentiation may therefore have played a crucial role in decreasing redox conditions and favouring efficient S degassing. Differently, during the unusual FS eruption, only limited melt evolution is observed and S exsolution seems to have been triggered by a major pressure decrease accompanied by H2O and CO2 exsolution during fast magmatic ascent.
    Beschreibung: Published
    Beschreibung: egaa095
    Beschreibung: 4V. Processi pre-eruttivi
    Beschreibung: JCR Journal
    Schlagwort(e): melt inclusions ; sulphur solubility experiments ; XANES ; Mt. Etna ; 04.08. Volcanology
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  • 13
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    Importance of earthquake rupture geometry on tsunami modelling: the Calabrian Arc subduction interface (Italy) case study (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-10-16
    Beschreibung: The behaviour of tsunami waves at any location depends on the local morphology of the coasts, the encountered bathymetric features, and the characteristics of the source. However, the importance of accurately modelling the geometric properties of the causative fault for simulations of seismically induced tsunamis is rarely addressed. In this work, we analyse the effects of using two different geometric models of the subduction interface of the Calabrian Arc (southern Italy, Ionian Sea) onto the simulated tsunamis: a detailed 3-D subduction interface obtained from the interpretation of a dense network of seismic reflection profiles, and a planar interface that roughly approximates the 3-D one. These models can be thought of as representing two end-members of the level of knowledge of fault geometry. We define three hypothetical earthquake ruptures of different magnitudes (Mw 7.5, 8.0, 8.5) on each geometry. The resulting tsunami impact is evaluated at the 50-m isobath in front of coastlines of the central and eastern Mediterranean. Our results show that the source geometry imprint is evident on the tsunami waveforms, as recorded at various distances and positions relative to the source. The absolute differences in maximum and minimum wave amplitudes locally exceed one metre, and the relative differences remain systematically above 20 per cent with peaks over 40 per cent. We also observe that tsunami energy directivity and focusing due to bathymetric waveguides take different paths depending on which fault is used. Although the differences increase with increasing earthquake magnitude, there is no simple rule to anticipate the different effects produced by these end-member models of the earthquake source. Our findings suggest that oversimplified source models may hinder our fundamental understanding of the tsunami impact and great care should be adopted when making simplistic assumptions regarding the appropriateness of the planar fault approximation in tsunami studies. We also remark that the geological and geophysical 3-D fault characterization remains a crucial and unavoidable step in tsunami hazard analyses.
    Beschreibung: Published
    Beschreibung: 1805–1819
    Beschreibung: 3T. Sorgente sismica
    Beschreibung: 6T. Studi di pericolosità sismica e da maremoto
    Beschreibung: JCR Journal
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  • 14
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    On the Heterogeneity of the Earthquake rupture (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-04-14
    Beschreibung: The scaling of earthquake parameters with seismic moment and its interpretation in terms of self- similarity is still debated in the literature. We address this question by examining a worldwide compilation of corner frequency-based and elastic rebound theory (ERT)-based fault slip, area and stress drop values for earthquakes ranging in magnitude from -0.7 to 7.8. We find that corner frequency estimates of slip (and stress drop) scale differently than those inferred from the ERT approach, where the latter deviates from the generally accepted constant stress drop behavior of so- called self-similar scaling models. We also find that average slips from finite-source models are consistent with corner frequency scaling, whereas peak slip values are more consistent with the ERT scaling. The different scaling of corner frequency- and ERT-based estimates of slip and stress drop with earthquake size is interpreted in terms of heterogeneity of the rupture process. ERT-based estimates of stress drop decrease with seismic moment suggesting a self-affine behavior. Despite the inferred heterogeneity at all scales, we do not observe a clear effect on the Brune stress drop scaling with earthquake size.
    Beschreibung: Published
    Beschreibung: 1771–1781
    Beschreibung: 2T. Deformazione crostale attiva
    Beschreibung: JCR Journal
    Schlagwort(e): Earthquake dynamics ; Earthquake source observations ; Dynamics and mechanics of faulting ; 04.06. Seismology
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  • 15
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    Back to the future: old methods for new estimation and test of the Gutenberg–Richter b-value for catalogues with variable completeness (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-11-11
    Beschreibung: This article has been accepted for publication in Geophysical Journal International ©: 2021 The Author(s) 2020. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
    Beschreibung: In this short paper we show how to use the classical maximum likelihood estimation procedure for the b-value of the Gutenberg–Richter law for catalogues with different levels of completeness. With a simple correction, that is subtracting the relative completeness level to each magnitude, it becomes possible to use the classical approach. Moreover, this correction allows to adopt the testing procedures, initially made for catalogues with a single level of completeness, for catalogues with different levels of completeness too.
    Beschreibung: Published
    Beschreibung: 337–339
    Beschreibung: 6T. Studi di pericolosità sismica e da maremoto
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 16
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    Good practices in PSHA: declustering, b-value estimation, foreshocks and aftershocks inclusion; a case study in Italy (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-12-21
    Beschreibung: This article has been accepted for publication in Geophysical Journal International. Published by Oxford University Press on behalf of the Royal Astronomical Society.
    Beschreibung: The classical procedure of the Probabilistic Seismic Hazard Analysis (PSHA) requires a Poissonian distribution of earthquakes. Seismic catalogs follow a Poisson distribution just after the application of a declustering algorithm that leaves only one earthquake for each seismic sequence (usually the stronger, i.e. the main shock). Removing earthquakes from the seismic catalogs leads to underestimation of the annual rates of the events and consequently associate with low seismic hazard as indicated by several studies. In this study, we aim investigating the performance of two declustering methods on the Italian instrumental catalog and the impact of declustering on estimation of the b-value and on the seismic hazard analysis. To this end, first the spatial variation in the seismicity rate was estimated from the declustered catalogs using the adaptive smoothed seismicity approach, considering small earthquakes (Mw≥3.0). We then corrected the seismicity rates using new approach that allows for counting all events in the complete seismic catalog by simply changing the magnitude frequency distribution. The impact of declustering on seismic hazard analysis is illustrated using PSHA maps in terms of peak ground acceleration (PGA) and spectral acceleration (SA) in 2 s, with 10% and 2% probability of exceedance in 50 years, for Italy. We observed that the hazard calculated from the declustered catalogs was always lower than the hazard computed using the complete catalog. These results are in agreement with previous results obtained in different parts of the world.
    Beschreibung: Published
    Beschreibung: 1174–1187
    Beschreibung: 6T. Studi di pericolosità sismica e da maremoto
    Beschreibung: JCR Journal
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 17
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    Crustal and uppermost mantle shear wave velocity structure beneath the Middle East from surface wave tomography (2021)
    Oxford University Press
    Details
    Publikationsdatum: 2021-05-12
    Beschreibung: We have constructed a 3-D shear wave velocity (Vs) model for the crust and uppermost mantle beneath the Middle East using Rayleigh wave records obtained from ambient-noise cross-correlations and regional earthquakes. We combined one decade of data collected from 852 permanent and temporary broad-band stations in the region to calculate group-velocity dispersion curves. A compilation of 〉54 000 ray paths provides reliable group-velocity measurements for periods between 2 and 150 s. Path-averaged group velocities calculated at different periods were inverted for 2-D group-velocity maps. To overcome the problem of heterogeneous ray coverage, we used an adaptive grid parametrization for the group-velocity tomographic inversion. We then sample the period-dependent group-velocity field at each cell of a predefined grid to generate 1-D group-velocity dispersion curves, which are subsequently inverted for 1-D Vs models beneath each cell and combined to approximate the 3-D Vs structure of the area. The Vs model shows low velocities at shallow depths (5–10 km) beneath the Mesopotamian foredeep, South Caspian Basin, eastern Mediterranean and the Black Sea, in coincidence with deep sedimentary basins. Shallow high-velocity anomalies are observed in regions such as the Arabian Shield, Anatolian Plateau and Central Iran, which are dominated by widespread magmatic exposures. In the 10–20 km depth range, we find evidence for a band of high velocities (〉4.0 km s–1) along the southern Red Sea and Arabian Shield, indicating the presence of upper mantle rocks. Our 3-D velocity model exhibits high velocities in the depth range of 30–50 km beneath western Arabia, eastern Mediterranean, Central Iranian Block, South Caspian Basin and the Black Sea, possibly indicating a relatively thin crust. In contrast, the Zagros mountain range, the Sanandaj-Sirjan metamorphic zone in western central Iran, the easternmost Anatolian plateau and Lesser Caucasus are characterized by low velocities at these depths. Some of these anomalies may be related to thick crustal roots that support the high topography of these regions. In the upper mantle depth range, high-velocity anomalies are obtained beneath the Arabian Platform, southern Zagros, Persian Gulf and the eastern Mediterranean, in contrast to low velocities beneath the Red Sea, Arabian Shield, Afar depression, eastern Turkey and Lut Block in eastern Iran. Our Vs model may be used as a new reference crustal model for the Middle East in a broad range of future studies.
    Beschreibung: Published
    Beschreibung: 1349-1365
    Beschreibung: 1T. Struttura della Terra
    Beschreibung: JCR Journal
    Schlagwort(e): 04.01. Earth Interior ; 04.06. Seismology
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  • 18
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    Asian dust-storm activity dominated by Chinese dynasty changes since 2000 BP (2020)
    Nature Publishing Group
    In:  EPIC3Nature Communications, Nature Publishing Group, 11(1), pp. 1-7, ISSN: 2041-1723
    Details
    Publikationsdatum: 2020-04-14
    Beschreibung: The Asian monsoon (AM) played an important role in the dynastic history of China, yet it remains unknown whether AM-mediated shifts in Chinese societies affect earth surface processes to the point of exceeding natural variability. Here, we present a dust storm intensity record dating back to the first unified dynasty of China (the Qin Dynasty, 221–207 B.C.E.). Marked increases in dust storm activity coincided with unified dynasties with large populations during strong AM periods. By contrast, reduced dust storm activity corresponded to decreased population sizes and periods of civil unrest, which was co-eval with a weakened AM. The strengthened AM may have facilitated the development of Chinese civilizations, destabilizing the topsoil and thereby increasing the dust storm frequency. Beginning at least 2000 years ago, human activities might have started to overtake natural climatic variability as the dominant controls of dust storm activity in eastern China.
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  • 19
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    Successful ecosystem-based management of Antarctic krill should address uncertainties in krill recruitment, behaviour and ecological adaptation (2020)
    Nature Publishing Group
    In:  EPIC3Communications Earth & Environment, Nature Publishing Group, 1(28), ISSN: 2662-4435
    Details
    Publikationsdatum: 2020-11-12
    Beschreibung: Antarctic krill, Euphausia superba, supports a valuable commercial fishery in the Southwest Atlantic, which holds the highest krill densities and is warming rapidly. The krill catch is increasing, is concentrated in a small area, and has shifted seasonally from summer to autumn/winter. The fishery is managed by the Commission for the Conservation of Antarctic Marine Living Resources, with the main goal of safeguarding the large populations of krill-dependent predators. Here we show that, because of the restricted distribution of successfully spawning krill and high inter-annual variability in their biomass, the risk of direct fishery impacts on the krill stock itself might be higher than previously thought. We show how management benefits could be achieved by incorporating uncertainty surrounding key aspects of krill ecology into management decisions, and how knowledge can be improved in these key areas. This improved information may be supplied, in part, by the fishery itself.
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  • 20
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    Antarctic icebergs reorganize ocean circulation during Pleistocene glacials (2021)
    Nature Publishing Group
    In:  EPIC3Nature, Nature Publishing Group, 589(7841), pp. 236-241, ISSN: 0028-0836
    Details
    Publikationsdatum: 2021-02-03
    Beschreibung: The dominant feature of large-scale mass transfer in the modern ocean is the Atlantic meridional overturning circulation (AMOC). The geometry and vigour of this circulation influences global climate on various timescales. Palaeoceanographic evidence suggests that during glacial periods of the past 1.5 million years the AMOC had markedly different features from today; in the Atlantic basin, deep waters of Southern Ocean origin increased in volume while above them the core of the North Atlantic Deep Water (NADW) shoaled. An absence of evidence on the origin of this phenomenon means that the sequence of events leading to global glacial conditions remains unclear. Here we present multi-proxy evidence showing that northward shifts in Antarctic iceberg melt in the Indian–Atlantic Southern Ocean (0–50°E) systematically preceded deep-water mass reorganizations by one to two thousand years during Pleistocene-era glaciations. With the aid of iceberg-trajectory model experiments, we demonstrate that such a shift in iceberg trajectories during glacial periods can result in a considerable redistribution of freshwater in the Southern Ocean. We suggest that this, in concert with increased sea-ice cover, enabled positive buoyancy anomalies to ‘escape’ into the upper limb of the AMOC, providing a teleconnection between surface Southern Ocean conditions and the formation of NADW. The magnitude and pacing of this mechanism evolved substantially across the mid-Pleistocene transition, and the coeval increase in magnitude of the ‘southern escape’ and deep circulation perturbations implicate this mechanism as a key feedback in the transition to the ‘100-kyr world’, in which glacial–interglacial cycles occur at roughly 100,000-year periods.
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  • 21
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    Scenario analysis can guide aquaculture planning to meet sustainable future production goals (2021)
    Oxford University Press
    In:  EPIC3ICES Journal of Marine Science, Oxford University Press, pp. 1-11, ISSN: 1054-3139
    Details
    Publikationsdatum: 2021-07-23
    Beschreibung: Marine aquaculture holds great promise for meeting increasing demand for healthy protein that is sustainably produced, but reaching necessary production levels will be challenging. The ecosystem approach to aquaculture is a framework for sustainable aquaculture development that prioritizes multiple-stakeholder participation and spatial planning. These types of approaches have been increasingly used to help guide sustainable, persistent, and equitable aquaculture planning, but most countries have difficulties in setting or meeting longer-term development goals. Scenario analysis (SA) for future planning uses similar approaches and can complement holistic methods, such as the ecosystem approach to aquaculture framework, by providing a temporal analogue to the spatially robust design. Here we define the SA approach to planning in aquaculture, outline how SA can benefit aquaculture planning, and review how this tool is already being used. We track the use of planning tools in the 20 International Council for the Exploration of the Sea member nations, with particular attention given to Norway’s development goals to 2050. We conclude that employing a combination of an ecosystem framework with scenario analyses may help identify the scale of development aquaculture goals over time, aid in evaluating the feasibility of the desired outcomes, and highlight potential social-ecological conflicts and trade-offs that may otherwise be overlooked.
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  • 22
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    Eruptive activity on the western flank of Piton de la Fournaise (La Réunion Island, Indian Ocean): insights on magma transfer, storage and evolution at an oceanic volcanic island (2020)
    Oxford University Press
    Details
    Publikationsdatum: 2020-06-17
    Beschreibung: Petrological and geochemical (major element, trace element, Sr–Nd isotope) data for recent (〈5 kyr old) basalts that sporadically erupt on the western flank of Piton de la Fournaise (PdF), one of the most active volcanoes on Earth, allow the tracking of magma transfer and evolution from mantle to crustal depths. In the western peripheral area of PdF we document the broadly synchronous eruptions of (1) primitive olivine and olivine–clinopyroxene transitional basalts with tholeiitic affinity 30 that are closely associated in space with (2) transitional olivine basalts with alkaline affinity, and (3) hybrid lavas, intermediate between the ‘alkaline’ and the ‘tholeiitic’ end-members. The composition of the latter overlaps with that of the lavas frequently erupted from the conduit system feeding the main summit cone. AlphaMELTS modelling, and fluid inclusion and clinopyroxene barometry, constrain the conditions of magma storage at 10–30 km, and the ascent of magma from the upper 35 mantle to the shallow crustal plumbing system. Variable degrees of mantle melting, together with minor source heterogeneity and contamination with cumulate-derived partial melts, contribute to the diversity of PdF magmas. However, all these processes do not represent the dominant factors that produce the large variability we found in major element composition. Indeed, the composition of basalts erupted from PdF peripheral centers is strongly controlled by polybaric olivine–clinopyr- 40 oxene fractionation at pressures higher than 3 kbar. Crystal textures and geochemical modelling suggest that fast magma ascent is critical to prevent clinopyroxene dissolution. Conversely, longlasting magma stagnation promotes pyroxene resorption and magma differentiation. ‘Central’ eruptions occurring close to the PdF summit cone emit variably more evolved melts, which result from olivine–clinopyroxene–plagioclase differentiation at intermediate–shallow pressure (〈3 kbar and in most cases 〈1 kbar). Deep and extensive magma mixing before injection into the crustal magma conduit system, located below the summit region, results in the apparent homogeneity of basalts erupted from the central area. As regards ‘peripheral’ eruptions, deep-seated stagnation of basaltic melts and differentiation at the mantle–crust transition zone (c. 4 kbar) produces a range of 5 magma compositions. We demonstrate that rapid magma ascent from deep-seated reservoirs can bypass the central plumbing system. The eruptions of these magmas both in the central area and on the densely populated flanks have major consequences in terms of volcanic hazard at PdF.
    Beschreibung: Published
    Beschreibung: 1717–1752
    Beschreibung: 2V. Struttura e sistema di alimentazione dei vulcani
    Beschreibung: JCR Journal
    Schlagwort(e): transitional basalts ; clinopyroxene crystallization and resorption ; mantle–crust underplating
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 23
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    Overview of the mating systems of Crustacea (2020)
    Oxford University Press
    In:  EPIC3The Natural History of the Crustacea, Vol. 6: Reproductive Biology, New York, U.S.A., Oxford University Press, 30 p., pp. 277-306, ISBN: 9780190688554
    Details
    Publikationsdatum: 2021-02-24
    Beschreibung: Due to an exceptional variety of habitats, body plans, and lifestyles, crustaceans exhibit a wide array of mating systems. Some groups engage in simple, pure- search polygamous systems in which males usually search for receptive females. In other groups, males defend valuable resources to attract and/ or guard females to ensure paternity. Some species have developed highly complex systems of harem defense polygyny and monogamy, even cases of sub- and eusociality are reported. The expression of mating systems does not seem to be uniformly correlated to taxonomic affiliation, but is rather diverse within certain groups, suggesting that the evolution of mating systems is largely facilitated by the lifestyle of the species. Despite the broad range of mating systems in crustaceans, and although some groups have been studied comparably well, there remains a lack of knowledge about the behavioral and sexual biology of many species. In the light of the high diversity of lifestyles, mating systems, and habitats of certain groups, crustacean species would be ideal models to unravel the evolution of reproductive strategies and social behaviors.
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  • 24
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    Bacterial communities in temperate and polar coastal sands are seasonally stable (2021)
    Nature Publishing Group
    In:  EPIC3ISME Communications, Nature Publishing Group, 1(1), pp. 1-11
    Details
    Publikationsdatum: 2021-10-20
    Beschreibung: Coastal sands are biocatalytic filters for dissolved and particulate organic matter of marine and terrestrial origin, thus, acting as centers of organic matter transformation. At high temporal resolution, we accessed the variability of benthic bacterial communities over two annual cycles at Helgoland (North Sea), and compared it with seasonality of communities in Isfjorden (Svalbard, 78°N) sediments, where primary production does not occur during winter. Benthic community structure remained stable in both, temperate and polar sediments on the level of cell counts and 16S rRNA-based taxonomy. Actinobacteriota of uncultured Actinomarinales and Microtrichales were a major group, with 8 ± 1% of total reads (Helgoland) and 31 ± 6% (Svalbard). Their high activity (frequency of dividing cells 28%) and in situ cell numbers of 〉10% of total microbes in Svalbard sediments, suggest Actinomarinales and Microtrichales as key heterotrophs for carbon mineralization. Even though Helgoland and Svalbard sampling sites showed no phytodetritus-driven changes of the benthic bacterial community structure, they harbored significantly different communities (p 〈 0.0001, r = 0.963). The temporal stability of benthic bacterial communities is in stark contrast to the dynamic succession typical of coastal waters, suggesting that pelagic and benthic bacterial communities respond to phytoplankton productivity very differently.
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  • 25
    Digitale Medien
    Digitale Medien
    The Chemical Formulary: a Condensed Collection of Valuable, Timely, Practical Formulas for making Thousands of Products in all Fields of Industry (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 50-50 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT is difficult to assess the value of a book of this kind until one has lived with it for years. Only then can one discover whether any process of trial or selection has led to the inclusion or exclusion of material, or whether-as appears to be the case in this instance-there is no kind of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135050b0
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  • 26
    Digitale Medien
    Digitale Medien
    Metaplasia of Uterine Epithelium Produced by Chronic Œstrin Administration (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 65-66 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE synthesis of polycyclic compounds possessing both œstrogenic and carcinogenic properties1, the finding of considerable amounts of œstrin in cancerous tissue2 and in the blood of tumour-bearing male mice3, and the demonstration in various ways of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135065b0
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  • 27
    Digitale Medien
    Digitale Medien
    Absolute Value of the X-Unit (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 67-67 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN order to determine the ratio between the X-unit and the absolute unit of length, I have registered certain X-ray lines in high orders with a concave glass grating (R = 5 m.) and determined their wavelengths by comparing them with known spark lines in the first order, registered on the same ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135067a0
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  • 28
    Digitale Medien
    Digitale Medien
    Science News a Century Ago (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 317-317 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Telford and the Institution of Civil Engineers At a special meeting of the council of the Institution of Civil Engineers held on February 23, 1835, the following extract from the will of Telford was read: "To the president for the time being of the Civil Engineer Institution in trust, the interest ...
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  • 29
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    Societies and Academies (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 318-320 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LONDON Royal Society, February 14. G. BARRY, J. W. COOK , G. A. D. HASLEWOOD, C. L. HEWETT, I. HIEGER and E. L. KENNAWAY: The production of cancer by pure hydrocarbons (3). Tests for cancer-producing activity on the skin of mice have been carried out with a number of pure compounds of known ...
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  • 30
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    Digitale Medien
    Forthcoming Events (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 320-320 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] [Meetings marked with an asterisk are open to the public.] Sunday, February 24 BRITISH MUSEUM (NATURAL HISTORY), at 3 and 4.30.? M. A. Phillips: "Fossil Mammals".* Monday, February 25 BRITISH MUSEUM (NATURAL HISTORY), at 11.30.?G. Seccombe Hett: "Bats".* ROYAL GEOGRAPHICAL SOCIETY, at ...
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    URL: http://dx.doi.org/10.1038/135320a0
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  • 31
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    Measuring General Intelligence by Tests which break the g -Hierarchy (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 71-71 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN an article in the current number of the British Journal of Psychology, I have shown that two tests which fit separately into a hierarchy, but the correlation of which with one another breaks it, can under certain conditions be weighted so as to form a team of two tests correlating perfectly ...
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  • 32
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    Digitale Medien
    Large Telescope Mirrors constructed by Dr. J. Peate (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 72-72 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN the years 1895–98 the Rev. Dr. John Peate, of Greenville, Pa., ground and polished a 62 in. diameter telescope mirror for the American University of Washington, D.C. Prior to that time he had made thirteen other reflectors, in the years 1879–95, which are said to have gone to “all parts of ...
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    URL: http://dx.doi.org/10.1038/135072a0
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  • 33
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    Digitale Medien
    Points from Foregoing Letters (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 72-72 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WHEN the lighter elements are bombarded with slow neutrons, atomic transmutation may occur with release Qf energy, Dr. J. Chadwick and Mr. M. Gold-haber, by the bombardment of lithium with neutrons from a radon-beryllium source slowed down by passage through paraffin wax, find that helium and ...
    Materialart: Digitale Medien
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  • 34
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    Digitale Medien
    University and Educational Intelligence (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 77-77 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] CAMBRIDGE.-The Adam Smith Prize offered annually for an essay on some unsettled question in economic science or in some branch of economic history or statistics subsequent to the year 1800 selected by the candidate himself has been awarded to Mr. W. B. Reddaway, of Oundle and King's College, who ...
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    URL: http://dx.doi.org/10.1038/135077a0
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  • 35
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    Digitale Medien
    Forthcoming Events (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 44-44 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] [Meetings marked with an asterisk are open to the public.] Sunday, January 6 BRITISH MUSEUM (NATURAL HISTORY), at 3 and 4.30.- Capt. Guy Dollman: "British Mammals". Monday, January 7 SOCIETY OF CHEMICAL INDUSTRY (LONDON SECTION), at 8-(at the Chemical Society, Burlington House, London, ...
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    URL: http://dx.doi.org/10.1038/135044a0
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  • 36
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    Digitale Medien
    Official Publications Received (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 44-44 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] GREAT BRITAIN AND IRELAND Report of the Committee appointed by the Physical Society to consider and make Recommendations on the Teaching of Geometrical Optics. Pp. v+86. (London: Physical Society.) 6*. net. University of Bristol. Annual Report of Council to Court, 1933-34. Pp. 48. (Bristol.) ...
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  • 37
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    Digitale Medien
    Satellite Station Tables (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 251-251 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT sometimes happens in minor triangulation that well-marked objects, which are otherwise suitable as trigonometrical points, cannot be observed from, though they are well placed for 'observing to'. Burma, with its innumerable pagodas, offers thousands of examples of this, and it is not surprising ...
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    URL: http://dx.doi.org/10.1038/135251c0
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  • 38
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    Digitale Medien
    Introduction to Modern Physics (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 251-251 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE first edition of Prof. Richtmyer's book has been appreciated by so many physicists that the appearance of a second edition is bound to be warmly welcomed, and it is only necessary here to note the chief changes which have been made. An adequate outline of the application of Fermi-Dirac ...
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    URL: http://dx.doi.org/10.1038/135251d0
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  • 39
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    Digitale Medien
    A Large French Wind Tunnel (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 252-253 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE large wind tunnel which has just been completed at Chalais-Meudon is of considerable interest. It is the second tunnel capable of testing a full-sized aeroplane to be constructed, the first being the 60 ft. x 30 ft. tunnel at Langley Field, U.S.A., and it differs in one very important respect ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135252a0
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  • 40
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    Digitale Medien
    Sir Horace Lamb, F.R.S. (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 255-257 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] HORACE LAMB was born at Stockport in 1849. His childhood was passed mostly in a household where the strictness of the religious ideas prevailing at that time left little scope for his naturally happy nature and his great vitality. These qualities, which so endeared him to his friends in later ...
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    URL: http://dx.doi.org/10.1038/135255a0
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  • 41
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    Digitale Medien
    Minute Intergenic Rearrangement as a Cause of Apparent ‘Gene Mutation’ (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 253-255 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WHEN it was discovered that chromosome breakage and reattachment usually entail effects resembling those of gene mutations located at or very near the point of breakage, it was suggested, as one alternative interpretation of this phenomenon, that the change in position of genes near the breakage ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135253a0
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  • 42
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    Digitale Medien
    Dr. A. A. Belopolsky (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 257-257 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ARISTARCH APOLLONOVITCH BELOPOLSKY, the well-known astrophysicist, member of the Russian Academy of Sciences since 1903, honorary director of the Pulkovo Astronomical Observatory in the U.S.S.R. and since 1910 an associate of the Royal Astronomical Society in London, passed away at Pulkovo on May ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135257a0
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  • 43
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    Rev. T. E. Espin (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 257-258 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WE regret to record the death on December 2 of the Rev. T. H. E. C. Espin, the well-known amateur astronomer. He began observing with a 1-in. telescope while at school at Haileybury, where his interest in the heavens was aroused by the appearance of Coggia's comet in 1872, and by his form master's ...
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    URL: http://dx.doi.org/10.1038/135257b0
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  • 44
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    Announcements (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 264-264 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE following have recently been elected foreign members of the Royal Academy of Sciences, Stockholm: Prof. Robert Robinson, professor of chemistry in the University of Oxford; Prof. F. D. Adams, emeritus Logan professor of geology in the McGill University, Montreal; Prof. Ejnar Hertzsprung, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135264a0
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  • 45
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    More Work for the R.S.P.C.A. (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 271-271 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MUCH satisfaction must have been felt by lovers of the lower animals in reading the review in NATURE of February 2 (p. 164) of the work accomplished by the R.S.P.C.A. since its foundation in 1824. It encourages one to hope that the Society will delay no longer in pressing for prohibition of the ...
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    URL: http://dx.doi.org/10.1038/135271b0
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  • 46
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    Digitale Medien
    Research Items (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 272-274 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The Bones of Comenius, Very shortly after the death of the great Czech scholar, John Amos Comenius, in Holland in 1670, his fame, and even his last resting place were forgotten owing to disturbed conditions both in his native land and in Holland. In the earlier part of the nineteenth century his ...
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    URL: http://dx.doi.org/10.1038/135272a0
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  • 47
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    Digitale Medien
    Fuel Research in Great Britain (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 276-277 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE work of the Fuel Research Board touches many aspects of the technology of fuel, and the annual report for the year ending March 1934 therefore provides a useful review of the problems before the coal and other fuel industries. In the first place, the report emphasises the steady accumulation ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135276a0
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  • 48
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    Digitale Medien
    University and Educational Intelligence (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 277-277 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] CAMBBIDGE.B. I. N. Greaves, of Clare College, has been appointed University demonstrator in pathology. Dr. J. D. Boyd, of the Queen's University, Belfast, and R. S. Handley, of Gonville and Caius College, have been appointed University demonstrators in anatomy. THE University Catholic Societies in ...
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    URL: http://dx.doi.org/10.1038/135277a0
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  • 49
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    Societies and Academies (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 278-280 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LONDON Royal Society, February 7. E. N. DA C. ANDBADE and P. J. HUTCHINGS: Mechanical behaviour of single crystals of mercury. In the mercury crystal the rhombohedral faces are glide planes, and the short diagonal is the glide direction. The crystal twins under strain on a plane through the long ...
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    URL: http://dx.doi.org/10.1038/135278a0
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  • 50
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    Digitale Medien
    Forthcoming Events (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 280-280 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] [Meetings marked with an asterisk are open to the public."] Sunday, February 17 BRITISH MUSEUM (NATURAL HISTORY), at 3 and 4.30.- Dr. Isabella Gordon: "Deep-sea Crustacea". Monday, February 18 BRITISH MUSEUM (NATURAL HISTORY), at 11.30.-A. C. Townsend: "The Linnaeus Collection in the Library". ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135280a0
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  • 51
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    Digitale Medien
    Official Publications Received (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 280-280 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] GREAT BRITAIN AND IRELAND Department of Scientific and Industrial Research. Report for the Year 1933-34. (Cmd. 4787.) Pp. iv+192. (London: H.M. Stationery Office.) 3s. net. Department of Scientific and Industrial Research. Report of Test by the Director of Fuel Research on the Plant of the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135280b0
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  • 52
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    The Planting of Hardwood Trees (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 201-203 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] RECENT correspondence in the Press, to which Mr. Alexander Howard refers in a letter on p. 231 of this issue, has directed attention to the alarming rate at which hardwood trees, whether isolated or in hedgerows, woodlands or otherwise, are being felled in many parts of Britain without any attempt ...
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    URL: http://dx.doi.org/10.1038/135201a0
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  • 53
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    Digitale Medien
    Television in Great Britain (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 209-210 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE report of the Television Committee under the chairmanship of Lord Selsdon, issued last week, seems to have taken the public and most of the experts by surprise, probably due to the fact that during the last nine months, when the Committee was sitting, they had heard practically nothing about ...
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    URL: http://dx.doi.org/10.1038/135209a0
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  • 54
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    Social and Industrial Aspects of Scientific Research (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 211-212 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT is difficult to imagine a document which better illustrates alike those social aspects of scientific research to which attention has been repeatedly directed in recent months, at the British Association meetings or elsewhere, and the way in which the direction of scientific research is itself ...
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    URL: http://dx.doi.org/10.1038/135211a0
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  • 55
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    Digitale Medien
    Sir William Slingo (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 214-214 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE death on January 19, at the age of seventy-nine years, of Sir William Slingo marks the passing of a distinguished civil servant and engineer, whose career has been associated with wide and far-reaching developments in the art of communication. At the age of fifteen years, Slingo entered the ...
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    URL: http://dx.doi.org/10.1038/135214a0
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  • 56
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    Digitale Medien
    Dr. John Howard (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 214-214 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DR. JOHN HOWABD, of the Fuel Research Station, Greenwich, was killed on January 3 through being caught by an avalanche and swept down a hillside in the neighbourhood of Vent. His companion was Mr. Kenneth F. Armstrong, who was also killed. Dr. Howard was the only son of Mr. and Mrs. Fred Howard. ...
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    URL: http://dx.doi.org/10.1038/135214b0
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  • 57
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    [Obituary] (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 214-214 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WE regret to announce the following deaths: Prof. Oliver P. Jenkins, emeritus professor of physiology and histology in Stanford University, an authority on American fishes, on January 9, aged eighty-four years. Prof. Hugo Junkers, founder and until 1932 head of the aircraft firm of that name at ...
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    Planetary Atmospheres (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 215-215 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WE are glad to be able to publish as a special supplement this week a survey of existing knowledge of the atmospheres of the planets, which formed the subject of the presidential address delivered by Prof. H. N. Russell at the recent Pittsburgh meeting of the American Association. Prof. Russell is ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135215a0
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  • 59
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    Digitale Medien
    Whales and Whaling (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 216-216 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE International Convention for the Regulation of Whaling, which came into force last month, is a first and important step towards the permanent preservation of whales and whaling. Since whales are killed almost entirely outside territorial waters, any effective measures having these ends in view ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135216c0
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  • 60
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    Digitale Medien
    British Industries Fair (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 216-216 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE British Industries Fair, 1935, organised by the Department of Overseas Trade, is being held at Olympia and the White City, London, on February 18-March 1. This year the Engineering and Hardware Section is to be held at Castle Bromwich, Birmingham, not simultaneously with the London sections, as ...
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    The Hoover (Boulder) Dam (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 216-217 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE completion, just announced, of the great concrete structure originally known as the Boulder Dam, but afterwards officially designated the Hoover Dam, across the Colorado River in Black Canyon, which forms the boundary between the States of Arizona and Nevada, at a point about twenty-five miles ...
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  • 62
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    Digitale Medien
    Anti-Noise Exhibition (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 217-217 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Prime Minister will open on May 31 at the Science Museum, South Kensington, an Anti-Noise Exhibition which is being arranged through the Anti-Noise League. The Exhibition will remain open throughout the month of June and probably conclude with a congress during the last week. The chairman of ...
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    URL: http://dx.doi.org/10.1038/135217a0
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  • 63
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    The Microscope and the Metal Industries (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 217-217 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Dr. C. H. DESCH delivered a Research and Development Lecture under the auspices of the Royal Institution and the British Science Guild on February 6, taking as his subject "The Microscope and the Metal Industry". Although a careful drawing of a metallic object (the edge of a razor) was published by ...
    Materialart: Digitale Medien
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  • 64
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    Japanese Patents and Inventions (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 218-218 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ON December 23, 1934, the Japan Times and Mail published a special "Invention Number" in connexion with the commemoration of the jubilee of the Japanese patent law. The number contains much interesting matter regarding the birth and growth of the Patent Bureau, the increase in the number of patents ...
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    URL: http://dx.doi.org/10.1038/135218b0
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  • 65
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    Vital Statistics for 1933 (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 227-227 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] LAST week (p. 181) we printed a note referring to the provisional figures of the vital statistics for 1934. The Registrar-General's Statistical Review for 1933, Tables (Part II, Givil) is now available (London: H.M. Stationery Office. 2s. Od.). It includes a table showing the populations of England ...
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    URL: http://dx.doi.org/10.1038/135227c0
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  • 66
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    Digitale Medien
    Association of American Geographers (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 227-227 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE thirty-first annual meeting of the Association of American Geographers, with Dr. Wallace W. Atwood presiding, was held at the University of Pennsylvania, Philadelphia, on December 27-29. Forty-nine papers were presented, including six in the field of geomorphology, five in climatology, and two ...
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    URL: http://dx.doi.org/10.1038/135227d0
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  • 67
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    Digitale Medien
    Congress on Dog Breeding (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 228-228 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] AN event of considerable interest to geneticists, psychologists, and especially to dog fanciers, is to take place at Frankfort on Main on April 22-25, when the Federation Cynologique Internationale (F.C.I.) is to hold its third congress, which will be followed (April 26-28) by a dog show, open to ...
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    URL: http://dx.doi.org/10.1038/135228a0
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  • 68
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    Digitale Medien
    Holly Lodge Farm (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 228-228 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ACCORDING to The Times of February 6 the Conservative Parliamentary Agricultural Committee on February 5 unanimously adopted the following resolution: "That in view of the authoritative opinions on the educational and research value of the Holly Lodge and Crown Farms, Walton-on-Thames, especially ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135228b0
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  • 69
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    Digitale Medien
    The Pair Bond Theory of Valency (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 230-231 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE method of molecular orbitals (Hund, Mulliken, Lennard-Jones), which is especially designed for the description of a completed molecule can be worked out in high approximations only in the simplest cases. In more complicated ones, it is therefore not able to describe the process of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135230a0
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  • 70
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    Digitale Medien
    Reafforestation of Forest Trees in Great Britain (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 231-231 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SEVERAL letters and articles have recently appeared in the public Press directing attention to the necessity for the reafforestation of the hardwood trees of Great Britain. The Forestry Commission appointed shortly after the War for the purpose of replacing the losses resulting from the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135231a0
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  • 71
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    Digitale Medien
    Zero Point Energy and Physical Properties of H 2 O and D 2 O (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 229-230 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE marked differences between the physical properties of H2O and D2O (and of all polar compounds of H and D) cannot be due to intramolecular differences, which are far too small, but must be connected with differences of effective intermolecular forces. It is possible to ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135229b0
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  • 72
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    Digitale Medien
    Interpretation of Animal Behaviour (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 231-231 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN a recent article on the “Interpretation of Animal Behaviour”1 the view was advanced that a preoccupation with teleological explanations was necessarily somewhat unscientific and philosophical. Since the future development of psychology?and probably of biology?will depend ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135231b0
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  • 73
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    [Letters to Editors] (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 232-232 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] I AM afraid I neither realise the basis nor appreciate the strength of Mr. Lauwerys' clearly implied prophecy that fruitful developments of biology and psychology—by which I trust he means the study of behaviour, since that is the matter under discussion—depend largely on the acceptance of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135232a0
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  • 74
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    Digitale Medien
    Grassland Research (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 145-145 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE Imperial Economic Committee has issued its report (No. 27) on grassland seeds (London: H.M. Stationery Office. Is. net). As grass may be regarded as the vital raw material of most of the produce of livestock, and farming and grassland products accounted for more than 20 per cent of the value of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135145b0
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  • 75
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    Digitale Medien
    Farm Pumps (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 145-145 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] AN illustrated booklet entitled "Pumps for Farm Water Supply" by C. A. Cameron Brown of the Institute for Research in Agricultural Engineering, Oxford, has just been published (Oxford Univ. Press, price Is. 6d.). Its appearance is opportune although plans for its preparation were made before the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135145c0
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  • 76
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    Digitale Medien
    Announcements (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 146-146 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WE regret to announce the death on January 16, at the age of seventy-nine years, caused by an accident while crossing a road in London, of Dr. F. A. Dixey, F.R.S., formerly sub warden, bursar and lecturer of Wadham College, Oxford, and president of the Entomological Society in 1909-10. ON February ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135146b0
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  • 77
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    Digitale Medien
    Books on Agriculture (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 146-146 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE literature devoted to agriculture and allied sciences is now so extensive that the recent issue by the Ministry of Agriculture of Bulletin No. 78 entitled "A Selected and Classified List of Books on Agriculture" (6d. net) will be very widely welcomed. The books listed, together with many ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135146a0
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  • 78
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    Digitale Medien
    Zoological Society of London (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 145-145 
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    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] AT the monthly general meeting of the Zoological Society of London it was stated that the total number of visitors to the Society's Gardens during the year 1934 was 1,639,611, the receipts amounting to £50,969, an increase of £3,432 as compared with the previous year. The total number of visitors ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135145d0
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  • 79
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    Digitale Medien
    Artificial Radioactivity Produced by Neutrons (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 147-147 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN the course of recent work in radium beam therapy research, we had the opportunity of making investigations in artificial radioactivity induced in some of the heavier elements through the agency of neutrons. We had available a tube containing 500 mgm. of radium mixed with 2 gm. of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135147a0
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    Digitale Medien
    A Spectroscopic Method for Detecting some Forms of Chelation (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 147-148 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ABNORMALLY large differences in solubility and volatility between isomers of some disubstituted benzene derivatives have been explained by Dr. N. V. Sidgwick as arising from the presence of chelate rings in the anomalous compounds. These rings are considered to be formed between ortho ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135147b0
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  • 81
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    Digitale Medien
    Surface-force Theory of Crystal Rectification (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 148-148 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] EXPERIMENTS with Mr. A. K. Das-Gupta have shown that when carborundum, zincite or silicon crystal is placed between two mercury electrodes giving a large contact area, there is considerable rectification. Similar experiments with symmetrical crystals like iron pyrites, galena, etc., have shown ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135148a0
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  • 82
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    Digitale Medien
    Synthesis of Vitamin C by Luteal Tissue (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 148-149 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] MOURIQUAND and Schoen have shown1 that gravid female guinea pigs on a scorbutic diet develop scurvy only very slightly or not at all. They considered that the fœtus was capable of synthesising vitamin C, and thus protected the mother from incurring the disease. Afterwards, ...
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    URL: http://dx.doi.org/10.1038/135148b0
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    Digitale Medien
    Activation of Cambial Growth (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 149-149 
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    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] EVIDENCE was recently obtained by one of us1 indicating that the influence coming down from the leaves, which activates cambial growth, is a hormone. Also Laibach2 has caused decapitated epicotyls of Vicia Faba and various leaf-stalks to grow in thickness by ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135149a0
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    Digitale Medien
    Recession of the Spiral Nebulæ (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 149-150 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE very recent and inspiring work of Prof. E. A. Milne on world structure has led us to investigate whether there exists a law connecting the velocity and distance of a particle from an observer which is invariant for the generalised Lorentz transformation. In the usual notation, the only law ...
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    URL: http://dx.doi.org/10.1038/135149b0
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    Simultaneous Travel of a Surge of Stress and a Group of High-Frequency Waves of Stress in a Steel Wire (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 151-152 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN previous communications, it has been shown how the frequency of longitudinal vibration of a steel wire may be measured1 and also how the speed of travel of a surge of stress in a steel wire may be measured directly2. From each of these methods the value of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135151c0
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    Accuracy of the Curie-Chéneveau Magnetic Balance (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 152-152 
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    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN a letter to NATURE1 and also in a recent Royal Society paper2, F. E. Hoare mentions difficulties that he has had with the Curie-Chéneveau magnetic balance and states that after a trial of some months he has decided to abandon the use of this instrument. He ...
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    URL: http://dx.doi.org/10.1038/135152a0
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    Disintegration by Slow Neutrons (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 153-153 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] CHADWICK and Goldhaber, in their letter to NATURE on January 12, record experiments which indicate that slow neutrons can eject heavy charged particles from light atoms, even when the neutron traverses the atom “at relatively large distances” from the nucleus. To account for this, they suggest ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135153a0
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  • 88
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    Digitale Medien
    Velocity of Sound in Liquid Oxygen (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 153-153 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT seems that the velocity of sound has never been measured in liquefied gases at low temperatures, probably because the customary methods were not easily practicable. It appeared reasonable to try as a new method the effect, which has recently been discovered by Debye-Sears and Lucas-Biquard, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135153b0
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  • 89
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    Digitale Medien
    Lividuality in Industry (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 81-83 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] ATTENTION has frequently been directed in recent years to the growth of the professional spirit among those responsible for the control and organisation of industry, whether on its financial, commercial or technical side. Mr. C. H. Bailey was not therefore breaking fresh ground in stressing this ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135081a0
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  • 90
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    Digitale Medien
    Induced Radioactivity produced by Neutrons liberated from Heavy Water by Radium Gamma-Rays (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 99-99 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WORKING in this laboratory, Szilard and Chalmers1 have shown that neutrons are liberated from beryllium irradiated by radium gamma-rays, and that they are capable of inducing radioactivity in a number of elements. Previously, Chad wick and Goldhaber2 had reported ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135099a0
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  • 91
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    Digitale Medien
    Humidity in Relation to Sheep Blowfly Attack (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 106-107 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN a recent letter to NATURE1, Holdaway and Mul-hearn conclude that (in Australia) “there is a relation between sweat content and susceptibility to weather stain and body strike” by blowflies. It is not clear whether they regard the predisposing factor to be the accumulation of sweat ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135106a0
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  • 92
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    Digitale Medien
    Vitamin B 1 and Blue Fluorescent Compounds (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 107-107 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] FLUORESCENCE in ultra-violet light (screened by Wood's glass) is not a property of vitamin B1; but I have found that the purest preparations in our possession (method of Kinnersley, O'Brien and Peters, 19331) can be converted by oxidation in aqueous solution into ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135107b0
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  • 93
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    Digitale Medien
    Testing for Unconsciousness After an Electric Shock (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 107-108 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IT has been definitely proved that the tests of consciousness used in chloroform anæsthesia cannot safely be assumed to be valid in the case of an animal or person who has been immobilised as a result of an electric stimulation of the brain. The matter is of great importance because, as a ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135107c0
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  • 94
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    Digitale Medien
    Magnetism of Tin (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 108-108 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] S. RAMACHANDRA RAO has reported1 that, on testing colloidal powders of white tin magnetically, its paramagnetic susceptibility becomes diamagnetic as the particle size decreases, this diamagnetism increasing as the particle size decreases. A few years ago we often observed the same ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135108a0
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  • 95
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    Digitale Medien
    Symbols for Chromosome Numbers (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 109-109 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] WHILE in entire agreement with Prof. Gates's view1 that a convention should be agreed upon to distinguish between the basic and the haploid chromosome number, I am not convinced that the introduction of a new symbol is necessary. The use of x to indicate the basic number, leaving n ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135109b0
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  • 96
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    Digitale Medien
    Water Purification by Ozone (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 113-113 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN Engineering of January 4, Mr. T. Rich gives an account of the development of the treatment of water by ozone which has resulted from the researches made by P. Otto in 1898 in connexion with his thesis for a doctor's degree at the Sorbonne. When Dr. Otto was carrying out his experiments, the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135113b0
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  • 97
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    Digitale Medien
    Grey and Red Squirrels in England (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 113-114 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN the report on animal numbers, issued by the Oxford University Bureau of Animal Population at the end of 1934, the director, Mr. A. D. Middleton, states that the evidence from the Bureau's three hundred or so observers in various parts of Great Britain points to another serious increase of the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135113c0
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  • 98
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    Digitale Medien
    Scientific Correspondence of Sir James Smith (1759–1828) (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 114-114 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE main portion of Part 1 of the Catalogue of Manuscripts in the Library of the Linnean Society of London is devoted to the scientific correspondence of the first president of the Linnean Society, and Mr. Warren Dawson has abstracted the more important matters referred to in more than 3,000 ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135114a0
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  • 99
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    Digitale Medien
    International Aspects of Drug Addiction (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 114-114 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN the Norman Kerr Memorial Lecture on this subject published in the January issue of the British Journal of Inebriety, Sir Malcolm Delevingne, late Deputy Permanent Under-Secretary of State and British representative on the Opium Advisory Committee of the League of Nations, showed that the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135114b0
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  • 100
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    Digitale Medien
    The Cape Naturalist (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 115-115 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] IN November there appeared the first number of the Cape Naturalist, which is designed to increase the interest of non-technical readers in Nature and archaeology in South Africa. A striking cover reproduces the flower of Stapelia, the colour and carrion -like odour of which attracts blowflies which ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/135115a0
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