ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • American Association of Petroleum Geologists (AAPG)
  • Wiley-Blackwell
  • 2010-2014  (19)
  • 1945-1949  (1,052)
  • 2010  (19)
  • 1948  (1,052)
Collection
Keywords
Publisher
Years
  • 2010-2014  (19)
  • 1945-1949  (1,052)
Year
  • 1
    facet.materialart.
    Unknown
    Mud diapirism and subcretion in the Barbados Ridge Accretionary Complex: The role of fluids in accretionary processes (2010)
    Wiley-Blackwell
    In:  Tectonics, 7 (3). pp. 613-640.
    Details
    Publication Date: 2020-05-14
    Description: Mud diapirism has recently been recognized in several modern accretionary wedges. It provides an important means of dewatering accretionary wedges and should be regarded as an important process for producing the melanges found in both modern and ancient accretionary terranes. Mud diapirism affects a large area of the Barbados Ridge Accretionary Complex. The distribution of the mud diapirs appears to be primarily controlled by the presence of underconsolidated terrigenous submarine fan deposits that are being accreted to the complex. The frequency of diapir occurrence decreases northward as the fan becomes thinner. Mud diapirs are absent from the very eastern most part of the complex formed from sediments accreted at its toe, with the exception of a few mud volcanoes on the ocean floor in front of the complex. The initiation of diapirism appears to be spatially coincident with the onset of subcretion, or underplating, of sediment to the base of the complex at a ramp between two levels of decollement. It is proposed that the release of mud and pore water from the subcreted sediments is a direct or indirect cause of most of the mud diapirism in the accretionary complex. There is a range of diapiric form dependent on the viscosity of the mud, from mud volcanoes fed by low viscosity mud, to higher viscosity mud ridges. The diapirs in the eastern areas of the complex are generally mud volcanoes with narrow conduits feeding a surface mound. Mud ridges are prominent in the western parts of the complex. This is interpreted as reflecting a general westward decrease in the fluid content of the accretionary complex. Bottom-simulating seismic reflectors formed by gas hydrate are commonly developed in the areas of mud volcano occurrences. The presence of the hydrate indicates that large volumes of methane are being generated at depth in these regions. The generation of methane may be contributing to zones of overpressuring in the wedge. Methane may also be partly responsible for driving the diapiric material to the surface to form mud volcanoes. Ridges in the subducting oceanic crust beneath the accretionary complex locally enhance diapirism above their crests and southern flanks. Faults formed later in the development of the complex are more commonly associated with diapirism than those resulting from accretion at the toe of the wedge. These later faults play an important role in controlling the sites of individual mud volcanoes, chains of mud volcanoes, and mud ridges.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 2
    facet.materialart.
    Unknown
    Reproductive ecology and scientific inference of steepness: a fundamental metric of population dynamics and strategic fisheries management (2010)
    Wiley-Blackwell
    In:  Fish and Fisheries, 11 (1). pp. 89-104.
    Details
    Publication Date: 2018-03-28
    Description: The relationship between the biomass of reproductively mature individuals (spawning stock) and the resulting offspring added to the population (recruitment), the stock–recruitment relationship, is a fundamental and challenging problem in all of population biology. The steepness of this relationship is commonly defined as the fraction of recruitment from an unfished population obtained when the spawning stock biomass is 20% of its unfished level. Since its introduction about 20 years ago, steepness has become widely used in fishery management, where it is usually treated as a statistical quantity. Here, we investigate the reproductive ecology of steepness, using both unstructured and age‐structured models. We show that if one has sufficient information to construct a density‐independent population model (maximum per capita productivity and natural mortality for the unstructured case or maximum per capita productivity, natural mortality and schedules of size and maturity at age for the structured model) then one can construct a point estimate for steepness. Thus, steepness cannot be chosen arbitrarily. If one assumes that the survival of recruited individuals fluctuates within populations, it is possible, by considering the early life history, to construct a prior distribution for steepness from this same demographic information. We develop the ideas for both compensatory (Beverton–Holt) and over‐compensatory (Ricker) stock–recruitment relationships. We illustrate our ideas with an example concerning bluefin tuna (Thunnus thynnus/orientalis, Scombridae). We show that assuming that steepness is unity when recruitment is considered to be environmentally driven is not biologically consistent, is inconsistent with a precautionary approach, and leads to the wrong scientific inference (which also applies for assigning steepness any other single value).
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 3
    facet.materialart.
    Unknown
    Some parameters of growth in Octopus vulgaris (2010)
    Wiley-Blackwell
    In:  Journal of Zoology, 163 (3). pp. 277-284.
    Details
    Publication Date: 2020-07-17
    Description: The total length, the dorsal mantle length and the weight of the lens of Octopus vulgaris Lamarck have been related to the live body weight. The effect of fixation on the body weight and dorsal mantle length has been tested on six small octopuses.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 4
    facet.materialart.
    Unknown
    Reproductive ecology and scientific inference of steepness: a fundamental metric of population dynamics and strategic fisheries management (2010)
    Wiley-Blackwell
    In:  Fish and Fisheries, 11 (1). pp. 89-104.
    Details
    Publication Date: 2018-03-22
    Description: The relationship between the biomass of reproductively mature individuals (spawning stock) and the resulting offspring added to the population (recruitment), the stock–recruitment relationship, is a fundamental and challenging problem in all of population biology. The steepness of this relationship is commonly defined as the fraction of recruitment from an unfished population obtained when the spawning stock biomass is 20% of its unfished level. Since its introduction about 20 years ago, steepness has become widely used in fishery management, where it is usually treated as a statistical quantity. Here, we investigate the reproductive ecology of steepness, using both unstructured and age‐structured models. We show that if one has sufficient information to construct a density‐independent population model (maximum per capita productivity and natural mortality for the unstructured case or maximum per capita productivity, natural mortality and schedules of size and maturity at age for the structured model) then one can construct a point estimate for steepness. Thus, steepness cannot be chosen arbitrarily. If one assumes that the survival of recruited individuals fluctuates within populations, it is possible, by considering the early life history, to construct a prior distribution for steepness from this same demographic information. We develop the ideas for both compensatory (Beverton–Holt) and over‐compensatory (Ricker) stock–recruitment relationships. We illustrate our ideas with an example concerning bluefin tuna (Thunnus thynnus/orientalis, Scombridae). We show that assuming that steepness is unity when recruitment is considered to be environmentally driven is not biologically consistent, is inconsistent with a precautionary approach, and leads to the wrong scientific inference (which also applies for assigning steepness any other single value).
    Type: Article , PeerReviewed
    Format: text
    Format: other
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 5
    facet.materialart.
    Unknown
    A tephrostratigraphic record for the last glacial-interglacial cycle from Lake Ohrid, Albania and Macedonia (2010)
    Wiley-Blackwell
    In:  Journal of Quaternary Science, 25 (3). pp. 320-338.
    Details
    Publication Date: 2017-12-19
    Description: Here we present a tephrostratigraphic record (core Co1202) recovered from the northeastern part of Lake Ohrid (Republics of Macedonia and Albania) reaching back to Marine Isotope Stage (MIS) 6. Overall ten horizons (OT0702-1 to OT0702-10) containing volcanic tephra have been recognised throughout the 14.94m long sediment succession. Four tephra layers were visible at macroscopic inspection (OT0702-4, OT0702-6, OT0702-8 and OT0702-9), while the remaining six are cryptotephras (OT0702-1, OT0702-2, OT0702-3, OT0702-5, OT0702-7 and OT0702-10) identified from peaks in K, Zr and Sr intensities, magnetic susceptibility measurements, and washing and sieving of the sediments. Glass shards of tephra layers and cryptotephras were analysed with respect to their major element composition, and correlated to explosive eruptions of Italian volcanoes. The stratigraphy and the major element composition of tephra layers and cryptotephras allowed the correlation of OT0702-1 to AD 472 or AD 512 eruptions of Somma-Vesuvius, OT0702-2 to the FL eruption of Mount Etna, OT0702-3 to the Mercato from Somma-Vesuvius, OT0702-4 to SMP1-e/Y-3 eruption from the Campi Flegrei caldera, OT0702-5 to the Codola eruption (Somma-Vesuvius or Campi Flegrei), OT0702-6 to the Campanian Ignimbrite/Y-5 from the Campi Flegrei caldera, OT0702-7 to the Green Tuff/Y-6 eruption from Pantelleria Island, OT0702-8 to the X-5 eruption probably originating from the Campi Flegrei caldera, OT0702-9 to the X-6 eruption of generic Campanian origin, and OT0702-10 to the P-11 eruption from Pantelleria Island. The fairly well-known ages of these tephra layers and parent eruptions provide new data on the dispersal and deposition of these tephras and, furthermore, allow the establishment of a chronological framework for core Co1202 for a first interpretation of major sedimentological changes.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 6
    facet.materialart.
    Unknown
    Consumer identity, abundance and nutrient concentration affect epiphyte diversity in an experimental eelgrass system (2010)
    Wiley-Blackwell
    In:  Oikos, 119 (11). pp. 1745-1754.
    Details
    Publication Date: 2019-09-24
    Description: Conceptual models predict a unimodal effect of consumer abundance on prey diversity with the highest diversity at intermediate consumer abundance (intermediate disturbance hypothesis). Consumer selectivity and prey productivity are assumed to be further important determinants. Preferential grazing on dominant prey species favoured by high nutrient supply is supposed to increase prey diversity, whereas the effect of consumers on prey diversity may be negative under low nutrient conditions (grazer reversal hypothesis). We tested the effect of four common consumers the isopod Idotea baltica, the amphipod Gammarus oceanicus, and the gastropods Littorina littorea and Rissoa membranacea on diversity and composition of epiphytes growing on eelgrass Zostera marina. Consumer density was manipulated (four levels: grazer free control, low, medium, high) based on abundances observed in eelgrass systems. Additionally, we manipulated nutrient supply (three levels) and the presence of Idotea in a factorial experiment. The impact of consumer abundance on epiphyte diversity varied depending on consumer identity and epiphyte evenness was affected rather than species number in this short-term experiment. Idotea reduced epiphyte diversity (Shannon-Wiener index H') and Gammarus increased epiphyte diversity. Littorina had no effect at low and medium abundance, but a negative effect in the high density treatment. Only Rissoa supported the conceptual models as it caused the proposed unimodal pattern in epiphyte diversity. The varying species-specific selectivity of the studied consumers is likely to explain their diverse impact on epiphyte diversity. Nutrients enhanced epiphyte diversity at medium enrichment, whereas higher nutrient supply reduced epiphyte diversity. The effect of Idotea changed from negative at low nutrient concentration to positive at higher nutrient supply, supporting the grazer reversal hypothesis. This study implies that consumer species identity and nutrient concentrations are important in controlling prey diversity and composition. Different consumer selectivity and changes in selectivity with growing consumer abundance and nutrient concentration are the causal factors for this effect.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 7
    facet.materialart.
    Unknown
    A framework for characterizing fluvial sediment fluxes from source to sink in cold environments (2010)
    Wiley-Blackwell
    In:  Geografiska Annaler: Series A, Physical Geography, 92 (2). pp. 155-176.
    Details
    Publication Date: 2020-07-31
    Description: Fluvial processes dominate sediment flux from most cold environments and as such are particularly sensitive to environmental change. However, these systems demonstrate high variability in flow and sediment transfer rates in both the short and long-term which presents specific problems for establishing integrated sediment flux studies. The objective of this paper is to briefly review the nature of fluvial and floodplain sediment sources in cold environments and to make recommendations on the measurement of fluvial sediment fluxes from these sources to sinks. The paper outlines a framework for examining fluvial sediment fluxes in cold environments including: sources of sediment in glacial and periglacial environments; techniques for measuring fluvial sediment transfers; and methods for measuring contemporary deposition in lacustrine sediment sinks. Within this framework, we stress that it is particularly important to provide consistency in methods for monitoring sediment flux and to adopt appropriate sampling frequencies. We recommend that the most appropriate methods for establishing integrated sediment flux studies in these cold environments are: repeat surveys and terrestrial laser scanning of valley and slope sediment stores on a monthly – daily frequency; weekly-daily sediment budgeting of bedload transfer using rapid resurvey methods; hourly or better time series of suspended and solute transport using data logger acquisition systems; and monitoring of lacustrine sedimentation using sediment accumulation sensors and/or weekly-daily estimates from passive sediment traps. Application of the proposed integrated framework will improve our understanding of sediment flux in cold environments and allow us to better assess the sensitivity of cold environments to environmental change within the context of contemporary and past sediment flux.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 8
    facet.materialart.
    Unknown
    The use of otolith microstructure to estimate age in adult Atlantic cod Gadus morhua (2010)
    Wiley-Blackwell
    In:  Journal of Fish Biology, 76 (7). pp. 1640-1654.
    Details
    Publication Date: 2017-09-14
    Description: Transverse sections of otoliths from Atlantic cod Gadus morhua from the Baltic Sea revealed narrow growth increments. The widths of these increments corresponded to daily increments from fish with known otolith growth rates and were therefore assumed to be daily increments. They exhibited a distinct pattern with increasing distance from the primary primordium. A series of zones with clearly distinguishable increments, first with increasing then with decreasing widths in a dome-shaped pattern, were separated by zones where no regular increment structure was visible. Increment width seemed to be tightly coupled to the annual cycle in environmental temperature at a depth of 30–60 m, where G. morhua predominantly reside. Between 135 and 200 increments occurred within the different zones, with a non-significant trend towards lower increment numbers and widths with distance from the primary primordium of the otolith. Increment formation apparently ceased at temperatures 〈 5–6° C, but growth during the cold months corresponded closely with estimated growth rates. The increment patterns seemed to reflect annual cycles in environmental temperature, and the count of the increment cycles may thus be a promising tool for the determination of the true age of Baltic G. morhua.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 9
    facet.materialart.
    Unknown
    Biodiversity patterns and processes on the mid-Atlantic ridge (2010)
    Wiley-Blackwell
    In:  In: Life in the World's Oceans: Diversity, Distribution, and Abundance. Wiley-Blackwell, Chichester, UK, pp. 103-121. ISBN 978-1-4051-9297-2
    Details
    Publication Date: 2016-10-17
    Type: Book chapter , NonPeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 10
    facet.materialart.
    Unknown
    Die Herausforderung globaler Klimawandel (2010)
    Wiley-Blackwell
    In:  Perspektiven der Wirtschaftspolitik, 11 (S1). pp. 4-12.
    Details
    Publication Date: 2019-09-23
    Description: At least half of the global warming observed during the 20th century of about 0.8°C is of anthropogenic origin and mostly due to enhanced atmospheric carbon dioxide levels in response to the burning of fossil fuels. The climate problem is therefore closely linked to the way we produce energy. Climate models predict a massive warming by the end of the century should global greenhouse gas emissions not be strongly reduced. The Intergovernmental Panel on Climate Change (IPCC) reports that the warming can amount to up to 4°C in a worst case scenario, which would be unprecedented in speed and extent in man's history. This can lead to an increase of extreme weather events and a rise of global sea level by up to 1m. A less known impact of increasing atmospheric carbon dioxide is ocean acidification, as the oceans take up large amounts of carbon dioxide. Ocean acidification potentially threatens marine life and global food production.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 11
    facet.materialart.
    Unknown
    Cephalopods in the diet of fur seals of the Galapagos Islands (2010)
    Wiley-Blackwell
    In:  Journal of Zoology, 190 (2). pp. 211-215.
    Details
    Publication Date: 2020-07-17
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 12
    facet.materialart.
    Unknown
    South Atlantic Margin Processes and Links with onshore Evolution (2010)
    American Association of Petroleum Geologists (AAPG)
    In:  EPIC3Tulsa, Oklahoma, USA, American Association of Petroleum Geologists (AAPG), 7 p.
    Details
    Publication Date: 2019-07-16
    Description: Petroleum systems located at passive continental margins received increasing attention in the last decade mainly because of deep- and ultra‐deep-water hydrocarbon exploration and production. The high risks associated with these settings originate mainly from the poor understanding of inherent geodynamic processes. The new priority program SAMPLE (South Atlantic Margin Processes and Links with onshore Evolution), established by the German Science Foundation in 2009 for a total duration of 6 years, addresses a number of open questions related to continental breakup and post‐breakup evolution of passive continental margins. 27 sub‐projects take advantage of the exceptional conditions of the South Atlantic as a prime “Geo‐archive.” The regional focus is set on the conjugate margins located east of Brazil and Argentina on one side and west of Angola, Namibia and South Africa on the other (Figure 1) as well as on the Walvis Ridge and the present‐day hotspot of Tristan da Cunha. The economic relevance of the program is demonstrated by support from several petroleum companies, but the main goal is research on fundamental processes behind the evolution of passive continental margins.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Book , peerRev
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 13
    facet.materialart.
    Unknown
    Imaging lateral heterogeneity in the northern Apennines from time reversal of reflected surface waves (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: Prominent arrivals in the coda of seismograms from the wider Alpine area can be associated with lateral reflections of Love waves at the northern Apennines mountain chain (Italy), where structural heterogeneity causes an abrupt contrast in phase velocity. We discuss an approach to image lateral heterogeneity from reflected surface waves using intermediate-period, three- component coda waveforms as sources for an adjoint wavefield that propagates the reflections backward in time. We numerically compute three-dimensional sensitivity kernels for the dependence of coda waveforms on P velocity, S velocity and density, based upon correlations between the adjoint and the regular forward wavefields. We consider synthetic coda waveforms for a simplified model of the northern Apennines, as well as real coda observations from five moderate magnitude earthquakes (M W 4.6–5.6) in the southern Alps. Wave propagation is simulated using the spectral-element method, for which a 3-D regional earth model is used in the case of real data. Single and combined event sensitivity kernels provide clear images of the reflectivity associated with the northern Apennines in kernels for density and S-wave speed. The kernels show that surface wave reflections occur near the axial zone of the mountain chain. Apart from the Apennines, the approach is able to image other smaller reflectivity patches from the coda waveforms, like the Ivrea zone in the southern Alps. Our coda misfit kernels can be integrated in a gradient-based waveform tomography, where they could enhance the shar pness of the model at lateral discontinuities.
    Description: Published
    Description: 543–554
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: reserved
    Keywords: Tomography; ; Computational seismology ; Wave scattering and diffraction ; Crustal structure ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 14
    facet.materialart.
    Unknown
    Experimental observation of stick-slip instability fronts (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: Stick-slip dynamic instability is a key mechanism governing frictional processes from microscale physics to earthquake faults and landslides; yet challenging questions are stil open about its nucleation and propagation dynamics. We present novel observations on laboratory experimental faults where spontaneously nucleating fractures are produced, describing (1) an initial quasistatic, stable rupture front accelerating to subshear and then intersonic velocity; 2) the arisal of a higher degree of complexity when the friction to prestress ratio is increased on the sliding surface. The complex behaviour includes stop and go sequences, irregular proportion and rerupturing episodes within short-time intervals, implying rapid restrengthening of the surface and the formation of self-healing pulses, reproducing experimentally for the first time a behaviour observed on seismic faults.
    Description: Published
    Description: 697-702
    Description: 2.3. TTC - Laboratori di chimica e fisica delle rocce
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: reserved
    Keywords: Fractures and flow; friction; earthquake dynamics; Dynamics and mechanics of faulting ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 15
    facet.materialart.
    Unknown
    Rock magnetism and palaeomagnetism of the Montalbano Jonico section (Italy): evidence for late diagenetic growth of greigite and implications for magnetostratigraphy (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: The Montalbano Jonico (MJ) section, cropping out in Southern Italy, represents a potential candidate to define the Lower/Middle Pleistocene boundary and it has been proposed as a suitable Global Stratotype Section and Point (GSSP) of the Ionian Stage (Middle Pleistocene). The MJ section is the only continuous benthic and planktonic δ18O on-land reference in the Mediterranean area for the Mid-Pleistocene transition, spanning an interval between about 1240 and 645 ka. Combined biostratigraphy and sapropel chronology, tephra stratigraphy and complete high-resolution benthic and planktonic foraminiferal stable oxygen isotope records already provide a firm chronostratigraphic framework for the MJ section. However, magnetostratigraphy was still required to precisely locate the Brunhes-Matuyama transition and to mark the GSSP for the Ionian stage. We carried out a palaeomagnetic study of a subsection (Ideale section) of the MJ composite section, sampling 61 oriented cores from 56 stratigraphic levels spread over a ca. 80-m-thick stratigraphic interval that correlates to the oxygen isotopic stage 19 and should therefore include the Brunhes-Matuyama reversal. The palaeomagnetic data indicate a stable and almost single-component natural remanent magnetization (NRM). A characteristic remanent magnetization (ChRM) was clearly identified by stepwise demagnetization of the NRM. The ChRM declination values vary around 0◦ and the ChRM inclination around the expected value (59◦) for a geocentric axial dipole field at the sampling locality. This result indicates that the section has been remagnetized during the Brunhes Chron. A preliminary study of 27 additional not azimuthally oriented hand samples, collected at various levels from other parts of the MJ composite section, indicates that all the samples are of normal polarity and demonstrates that the remagnetization is widespread across the whole exposed stratigraphic sequence. A series of specific rock magnetic techniques were then applied to investigate the nature of the main magnetic carrier in the study sediments, and they suggest that the main magnetic mineral in the MJ section is the iron sulphide greigite (Fe3S4). Scanning electron microscope observations and elemental microanalysis reveal that greigite occurs both as individual euhedral crystals and in iron sulphides aggregates filling voids in the clay matrix. Therefore, we infer that the remagnetization of the section is due to the late-diagenetic growth of greigite under reducing conditions, most likely resulting in the almost complete dissolution of the original magnetic minerals. Iron sulphide formation in the MJ section can be linked to migration of mineralized fluids. Our inferred timing of the remagnetization associated with greigite growth represents the longest remanence acquisition delay documented in greigite-bearing clays of the Italian peninsula so far.
    Description: In press
    Description: 2.2. Laboratorio di paleomagnetismo
    Description: JCR Journal
    Description: open
    Keywords: Remagnetization ; 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism ; 04. Solid Earth::04.05. Geomagnetism::04.05.07. Rock magnetism
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 16
    facet.materialart.
    Unknown
    A continuous palaeosecular variation record of the last four millennia from the Augusta Bay (Sicily, Italy) (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: We present a high-resolution palaeomagnetic and rock magnetic study of two cores, MS06 and MS06-SW (6.7 and 1.1 m long, respectively), collected at 72 m below sea level in the Augusta Bay shelf (Eastern Sicily, Ionian Sea, Italy) about 2.3 kmfrom the coastline. Geophysical surveying carried out in the sampling area highlighted the presence of a homogeneous sedimentary sequence that most likely was deposited after the Last Glacial Maximum and was not affected by anthropogenic disturbances. The two cores penetrated a monotonous mud sedimentary sequence, interrupted at ∼3 m depth by a 3–4-cm-thick volcanic sandy layer that is correlated with the tephra fallout deposit produced by the 122 BC plinian eruption of Mt Etna. This tephra, along with radiocarbon dating of nine marine shells and with radioactive tracers for the uppermost 0.3 m (210Pb and 137Cs), provide the chronological constraints for the stratigraphic sequence that resulted younger than 4500 yr BP. Palaeomagnetic and rock magnetic data show that the sample sequence is magnetically homogeneous. A single peak of high magnetic mineral concentration is present and corresponds to the volcanic sandy layer. Palaeomagnetic data allowed the identification of a well-defined characteristic remanent magnetization that provides a high-resolution record of palaeosecular variation (PSV) at the sampling site. The reconstructed PSV curve is in good agreement with the available regional reference PSV curves and with the prediction from recent PSV modelling for Europe. The palaeomagnetic data obtained in this study on the one hand support and refine the age model for the cores, derived from other independent constraints, and on the other hand provide an original high-resolution PSV curve that can serve as a reference for the central Mediterranean over the last 4 ka.
    Description: In press
    Description: 2.2. Laboratorio di paleomagnetismo
    Description: JCR Journal
    Description: restricted
    Keywords: Palaeomagnetic secular variation ; Palaeointensity ; Marine magnetics and palaeomagnetics ; Europe ; 04. Solid Earth::04.05. Geomagnetism::04.05.02. Geomagnetic field variations and reversals ; 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 17
    facet.materialart.
    Unknown
    Crustal heterogeneity highlighted by spatial b-value map in theWellington region of New Zealand (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: We map the b-value in the subduction zone of theWellington region, NewZealand, using a high quality earthquake catalogue relocated with a 3-D seismic velocity model, consisting of 50 314 events that occurred between 1990 and 2005. In order to investigate heterogeneity in the crust of the overlying plate and in the upper plane of the Wadati–Benioff Zone (WBZ), we analyse a series of cross-sections perpendicular to the strike of the subduction zone. We calculate the b-values selecting events with magnitude of completeness ≥2.4 and depth ≤65 km and projecting the seismicity within 20 km on each side of the cross-sectional planes. We observe areas of high b-value (∼1.7) near the plate interface and regions of low b-value anomalies are detected both in the WBZ in the northwest region below 40 km depth and in the overlying plate in the northern South Island at 10 km depth. The anomalies are statistically significant based on Utsu’s p-test and the bootstrap method and are not data processing method or parameter dependent. We compare the b-value distribution with previously determined 3-D distributions of Vp, Vp/Vs andQp from seismic tomography. This comparison suggests that material inhomogeneity, caused by fluid filled cracks resulting from dehydration of the subducted slab and subducted sediments, is the predominant cause of b-value variation in the shallow part of this subduction zone. Our observations are consistent with a previously proposed conceptual model that fluid distribution in the shallow part of this subduction zone is controlled by the permeability of geological terranes in the overlying plate.
    Description: Published
    Description: 451-460
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: restricted
    Keywords: Seismic attenuation ; Seismic tomography ; Statistical seismology ; Subduction zone processes ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy ; 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 18
    facet.materialart.
    Unknown
    Present-day stress in the surroundings of 2009 L’Aquila seismic sequence (Italy) (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2017-04-04
    Description: The axial zone of the Apenninic belt in central Italy is a tectonically active region affected by post-orogenic Quaternary extension. The present-day stress field is characterized by a minimum horizontal stress (Shmin) ∼ NE–SW oriented, derived mainly from earthquake focal mechanisms and secondarily from borehole breakouts and fault data. The paper describes the computation of the Shmin orientation along two deep boreholes located in the vicinity of the area hit by the 2009 April 6, Mw 6.3 L’Aquila earthquake. The analysed wells show breakout zones at a depth range between 1.4 and 4.6 km, giving precious information on a depth interval usually not investigated by any other data. The results show an Shmin N81 ± 22◦ and N74 ± 10◦ oriented for Varoni 1 and Campotosto 1 wells, respectively. The comparison among the breakouts, the 2009 seismic sequence, the past seismicity and the Quaternary faults indicates a small rotation of Shmin orientation from ∼ NE, in the southern, to ∼ ENE in the northern sector of the study area, where the wells are located. These differences are linked both to the natural variations of data and to the orientation of the main tectonic structures varying from NW–SE in the Abruzzi region to ∼ N–S moving toward the Umbro-Marchean Apennines. The identification of constant Shmin orientations with depth derived from all the examined active stress data, confirms the breakouts as reliable stress indicators also for aseismic areas.
    Description: Published
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: reserved
    Keywords: Seismicity and tectonics ; present-day stress ; borehole breakouts ; Italy ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 19
    facet.materialart.
    Unknown
    Rock magnetism and palaeomagnetism of the Montalbano Jonico section (Italy): evidence for late diagenetic growth of greigite and implications for magnetostratigraphy (2010)
    Wiley-Blackwell
    Details
    Publication Date: 2021-09-03
    Description: The Montalbano Jonico (MJ) section, cropping out in Southern Italy, represents a potential candidate to define the Lower/Middle Pleistocene boundary and it has been proposed as a suitable Global Stratotype Section and Point (GSSP) of the Ionian Stage (Middle Pleistocene). The MJ section is the only continuous benthic and planktonic δ18O on-land reference in the Mediterranean area for the Mid-Pleistocene transition, spanning an interval between about 1240 and 645 ka. Combined biostratigraphy and sapropel chronology, tephra stratigraphy and complete high-resolution benthic and planktonic foraminiferal stable oxygen isotope records already provide a firm chronostratigraphic framework for the MJ section. However, magnetostratigraphy was still required to precisely locate the Brunhes-Matuyama transition and to mark the GSSP for the Ionian stage. We carried out a palaeomagnetic study of a subsection (Ideale section) of the MJ composite section, sampling 61 oriented cores from 56 stratigraphic levels spread over a ca. 80-m-thick stratigraphic interval that correlates to the oxygen isotopic stage 19 and should therefore include the Brunhes-Matuyama reversal. The palaeomagnetic data indicate a stable and almost single-component natural remanent magnetization (NRM). A characteristic remanent magnetization (ChRM) was clearly identified by stepwise demagnetization of the NRM. The ChRM declination values vary around 0◦ and the ChRM inclination around the expected value (59◦) for a geocentric axial dipole field at the sampling locality. This result indicates that the section has been remagnetized during the Brunhes Chron. A preliminary study of 27 additional not azimuthally oriented hand samples, collected at various levels from other parts of the MJ composite section, indicates that all the samples are of normal polarity and demonstrates that the remagnetization is widespread across the whole exposed stratigraphic sequence. A series of specific rock magnetic techniques were then applied to investigate the nature of the main magnetic carrier in the study sediments, and they suggest that the main magnetic mineral in the MJ section is the iron sulphide greigite (Fe3S4). Scanning electron microscope observations and elemental microanalysis reveal that greigite occurs both as individual euhedral crystals and in iron sulphides aggregates filling voids in the clay matrix. Therefore, we infer that the remagnetization of the section is due to the late-diagenetic growth of greigite under reducing conditions, most likely resulting in the almost complete dissolution of the original magnetic minerals. Iron sulphide formation in the MJ section can be linked to migration of mineralized fluids. Our inferred timing of the remagnetization associated with greigite growth represents the longest remanence acquisition delay documented in greigite-bearing clays of the Italian peninsula so far.
    Description: Published
    Description: 1049-1066
    Description: 2.2. Laboratorio di paleomagnetismo
    Description: 2.3. TTC - Laboratori di chimica e fisica delle rocce
    Description: JCR Journal
    Description: reserved
    Keywords: Magnetostratigraphy ; Remagnetization ; Rock and mineral magnetization ; 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism ; 04. Solid Earth::04.05. Geomagnetism::04.05.07. Rock magnetism
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 20
    Electronic Resource
    Electronic Resource
    Phasenuntersuchungen im System Vanadin-Sauerstoff und die Krystallstruktur von V12O26 (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 8-21 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das System Vanadin - Sauerstoff wurde zwischen VO2 und V2O5 einer erneuten Prüfung unterzogen. Mit Hilfe von Pulver- und Einkrystallaufnahmen wurde ein Oxyd der Zusammensetzung V02,17 aufgefunden. Seine Krystallstruktur wurde durch ausschliessliche Verwendung von Fouriermethoden vollständig bestimmt. Die Elementarzelle ist monoklin und hat die Dimensionen a = 11,90Å, b = 3,67Å c = 10,12Å und,β = 100°52′. Der Zellinhalt entspricht der Formel V12O26. Die Raumgruppe ist C32h—C 2/m. Jedes Vanadinatom ist oktaedrisch von Sauerstoff umgeben. Die einzelnen Oktaeder sind teils durch gemeinsame Ecken, teils durch gemeinsame Kanten verknüpft.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310104
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 21
    Electronic Resource
    Electronic Resource
    Über 5-Chloracetyl-thiazol (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 26-28 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310106
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 22
    Electronic Resource
    Electronic Resource
    Beiträge zu dem Problem der Ähnlichkeit in der Chemie I (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 32-40 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310109
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 23
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des 5-Aminocumarons (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 75-77 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310114
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 24
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des Kohlenstoffringes. 45. Mitteilung. Über die Gültigkeitsgrenze der Bredt' schen Regel bei bicyclischen Verbindungen mit einem vielgliedrigen Ring (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 92-97 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310119
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 25
    Electronic Resource
    Electronic Resource
    Recherches sur l'amidon XXXVI. La Perméthylation de la lichénine (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 100-103 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310121
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 26
    Electronic Resource
    Electronic Resource
    Recherches sur l'amidon XXXIX. L'amylose de maïs (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 108-110 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310124
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 27
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles LVIII. Synthèse de l'acide α, α, β-triméthylsubérique (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 151-156 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Les synthèses de l'ester et de l'acide α,α,β-triméthylsubériques ont été effectuées en vne de celle de la triméthyl-1 1. 2-cycloheptanone-7 et. au delà, de l'irone telle qu'elle a été formu1ée par Ruzicka, et de produits apparentés.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310132
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 28
    Electronic Resource
    Electronic Resource
    Sur la production de l'ozone par l'électrolyse des solutions aqueuses d'acide fluorhydrique (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 172-176 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'électrolyse des solutions aqueuses d'acide fluorhydrique trés concentré a été effectude à la fempérature de - 15° dam un appareil approprié; elle donne lieu, à l'anode, à la production d'une petite quantité d'ozone qui a été décelée par le spectre d'absorption ultraviolet caractéristique de ce corps et analysée par la méthode de dosage ordinnire. Le gaz anodique ne renfermait pas d'autres corps que l'oxygéne et l'ozone.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310136
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 29
    Electronic Resource
    Electronic Resource
    Über Steroide. 76. Mitteilung. Monodehydro-marrianol- und -doisynolsäure. Über oestrogene Carbonsäuren XXIII (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 229-236 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310143
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 30
    Electronic Resource
    Electronic Resource
    Glucoside und β-1,3,4,6-Tetraacetyl-glucose aus Triacetyl-glucosan-α〈1,2〉β〈1,5〉 (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 281-286 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310148
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 31
    Electronic Resource
    Electronic Resource
    Über Steroide und Sexualhormone. 148. Mitteilung. Synthese des 14-Allo-17-iso-progesterons (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 249-256 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310146
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 32
    Electronic Resource
    Electronic Resource
    Le dosage semi-quantitatif de l'ion sulfurique (SO4″) dans les eaux naturelles (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 290-292 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310150
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 33
    Electronic Resource
    Electronic Resource
    Komplexone VII. Titration von Metallen mit Nitrilotriessigsäure H3X. Endpunktsindikation durch pH-Effekte (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 331-340 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es werden zwei Methoden zur Titration von: Al, Ca, C, d, Ce, Co, Cu, Fe(II), Hg(II), La, Mn, Mg, Ni, Pb und Zn angegeben, welche mit einer Genauigkeit von mindestens 1 % arbeiten und auch für recht verdünnte Lösungen anwendbar sind. Arbeitsvorschriften siehe S. 334 und 338.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310204
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 34
    Electronic Resource
    Electronic Resource
    Asymmetrischer Abbau von D, L-Methionin. durch Hefe (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 352-354 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310206
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 35
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles LX. Présence d'époxydihydrocaryophyllène (Caryophyllenoxyd de Treibs) dans l'extrait benzénique de bourgeons floraux du giroflier (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 378-381 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'extrait obtenu en traitant les bourgeons floraux du giroflier par le benzène ne renferme pas de caryophyllkne mais bien de l'époxy-dihydrocaryophyllèe(Caryophyllenoxyd de Treibs), tandis que le tourteau lime, sous l'action de l'eau bouillante, une huile essentielle constituée en majeure partie de caryophyllène. Ce dernier n'est donc pas un produit biologique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310210
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 36
    Electronic Resource
    Electronic Resource
    Die Aktivität der Lipase und der Cholinesterase bei fettfreier Diät und bei E-Avitaminose. 5. Mitteilung über das Verhalten der essentiellen Fettsäuren im Tierkörper (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 381-386 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird der Lipase- und Cholinesteresegehalt im Plasma von fettfrei ernährten männlichen Ratten untersucht. Dabei zeigt sich, dass bei völligem Fettentzug die Lipaseaktivität (gemessen an der Tributyrinspaltung) gegenüber der Norm stark herabgesetzt ist.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310211
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 37
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles LXI. Présence de nérolidol dans les huiles essentielles de papilionacées. 3ème communication (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 408-417 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Le bois de Myroroxylon Pereirae(Royle) Klotzsch, arbre dont on obtient le baume du Pérou, renferme une huile essentielle qui est constituée en majeure partie par du nérolidol, accompagné de cadinènes et d'un l-cadinol, tandis que le bois d'especes voisines (Myrocarpus frondosus et M. fastigiatus Allem. ou cabreuva) renferme du nérolidol, du l-cadinol et du bisabolol. L'écorce (liège) ne renferme pas de nérolidol. L'exploitation des arbres épuisds par la production du baume doit ênvisagée en vue de l'obtention de nérolidol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310217
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 38
    Electronic Resource
    Electronic Resource
    Komplexone VIII. Titration von Metallen mit Uramidiessig'säure H3Z. Endpunktsindikation durch pH-effekte (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 456-459 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden zwei Titrationsmethoden zur Bestimmung von Ca, Ce, Co, La, Mg, Mn, Ni, Zn und A1 angegeben, die rnit Uramildiessigsäure arbeiten. Einzig bei Mg besitzen diese Methoden einen Vorteil gegenüber denjenigen rnit Nitrilotriessigsäure.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310222
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 39
    Electronic Resource
    Electronic Resource
    Strychnos-Alkaloide. 7. Mitteilung. Über die Oxydation von Strychnin mit Kaliumpermanganat in schwach saurer Lösung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 505-513 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Oxydation von Strychnin mit Kaliumpermanganat in schwach saurer wässeriger Lösung wurde ein bisher unbekanntes Oxydationsprodukt C21H22O4N2 erhalten. Aus dem chemischen Ver halten konnte für das letztere die Konstitution eines 8-Oxy-15oxo-8,15-dihydro-strychnins (IIIa) abgeleitet werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310230
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 40
    Electronic Resource
    Electronic Resource
    Synthèses de produits macrocycliques à odeur musquée. 8e communication Synthèse de la civettone naturelle (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 543-553 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1° L'èhylPne-cètal du cèto-9-heptadècane-dioate d'éthyle a été cyelisé en l'éthylène-cétal de la céto-9-cyclo-heptadécanol-1-one-17. Cette dernière a été réduite catalytiquement en l'éthy1ène-cétal des deux céto-9-cyclo-heptadécane-diol-l,17 diastéreoméres. Ceux-ci furent transformés en les deux bromo-aeétates correspondants qui donnèrent, par réduction au zinc, un mélange de civettone trans et de civettone cis.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310234
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 41
    Electronic Resource
    Electronic Resource
    Über die kolorimetrische Bestimmung der Stöchiometrie einiger Farbkomplexe (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 577-588 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wurde die Extinktion hochverdünnter, schwefelsmrer Lösungen von TiIV, Vv, NbV und MoV1 unter wechselnden Zusäitzen von H2O2 gemessen. Mit Benützung der auftretenden Maxima der Färbungen wurde versucht, die farbtragenden Komplexe zu formulieren und Werte der Bildungsenergie näherungsweise zu ermitteln.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310238
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 42
    Electronic Resource
    Electronic Resource
    Über ein neues Reaktionsprodukt aus Aceton und Ammoniak (Acetonin) II (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 612-622 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus Acetonin lässt sich ein Dihydrochlorid darstellen, das bei 100° 1 Mol NH4Cl abspaltet. Das freie Acetonin zerfällt beimn Erhitzen unter Zusatz von NH4 Cl, (NH4)2SO4 oder Silikagel in 1 Mol NH3 und ein Amin der Formel C9H15N. Daneben entstehen höher konden sierte Substanzen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310242
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 43
    Electronic Resource
    Electronic Resource
    Über Steroide. 78. Mitteilung. Abbauprodukte der Sterinoxydation IV. Isolierung von Δ3,5-Androstadien-dion-(7,17) (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 629-632 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus der 3 Neutral-Fraktion der Oxydation von Cholesterin-acetat-dibromid mit Chromsäure ist eine neue Verbindung, das Δ3,5-Androstadien-dion-(7,17), isoliert worden. Dasselbe Produkt wurde aus tDehydro-androsteron trilsynthetisch dargrestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310244
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 44
    Electronic Resource
    Electronic Resource
    Veilchenriechstoffe. 27. Mitteilung. Infrartospektren in der Iron- und Jonon-Reihe (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 642-652 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurden Ultrarotspektren von 12 Substanzen der α, β- und γ-Iron sowie Jonon-Reihen aufgenommen und es wurde versucht, mit Hilfe derselben eine Aussage über die Lage der Doppelbindungen in diesen Verbindungen zu machen. Wjr sind dabei zu der Feststellung gekommen, dass die Lage der den Doppelbindungen zukommenden Frequenzen so stark von anderen, direkt benachbarten oder weiter entfernten Gruppen in der Molekel beeinflusst wird, dass zuverlässige Aussagen über die Lage dcr Doppelbindungen in der Jonon- und Tron-Rcihe nicht immer auf Grund von Gruppenfrcquenzen möglich sind, die an einfachen Verbindungen beobachtet wurden.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310246
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 45
    Electronic Resource
    Electronic Resource
    Welkstoffe und Antibiotika. 8. Mitteilung. Über die Konstitution von Enniatin B (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 665-671 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Konstitution von Enniatin B (C22H38O6N2), eines aus Fusariam Stamm ETH 4363 und Stamm ETH 1674 isolierten Antibiotikums, wurde aufgeklärt. Die same Hydrolyse liefert 2 Mol N-Methyl-( + )-valin (111) und 2 Mo1 D-α-Oxy-isovaleriansäure (11), wäihrend bei der alkalischen Hydrolyse das D-α-Oxy-isovaleryl-N-methyl-(+)-valin (IV) neben dem entsprechenden Lacton, 4-Methyl-3,6-diisopropyl-2,5-dioxo-morpholin (V), entsteht. Auf Grund dieser Befunde wird dem Enniatin B die Konstitution I einer cyclischen Verbindung mit 12 Ringgliedern erteilt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310248
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 46
    Electronic Resource
    Electronic Resource
    Über Reduktionsprodukte von substituierten Phenanthrolinen (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 786-794 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus der Reihe des p-Phenanthrolins wurden N-Methyl-p-phenanthrolon, 2-Chlor-p-phenanthrolin, 2-Methoxy-p-phenanthrolin und 2-Methoxy-p-phenanthrolin-mono-jodmethylat hergestellt und letzteres katalytisch reduziert. Hierbei bildeten sich 2-Oxy-N1-methyl- 1,2,3, 4-tetrahydro-p-phenanthrolin-N1-jodmethylat, 2-Oxy-N1-methyl- l,2,3, 4-tetrahydro-p-phenanthrolin, sowie 2-Methoxy-N1-methyl- 172,3,4-tetrahydro-p-phenanthrolin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310315
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 47
    Electronic Resource
    Electronic Resource
    Eine Untersuchung der sauren Bestandteile von Digitalis purpurea L (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 799-802 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Säwen aus Digitalis purpurea L. wurden einer eingehenden Untersuchung unterzogen. Dahei liessen sich isolieren : Ameisensäure, Essigsäure, Milchsäure, Bernsteinsäure, Citronensäure, Isocitronensäure, Benzoesäure und Kaffeesäure, ferner zwei Säuren C 85 und H 160, deren Konstitution noch nieht erkannt werden konnte, Sowje zwei Geruchstoffe A 125 und B 90 unbekannter Natur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310317
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 48
    Electronic Resource
    Electronic Resource
    Über die flüchtigen Bestandteile des grauen Ambra. 1. Mitteilung. Isolierung von Dihydro-γ-jonon (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 827-831 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus den flüchtigen Bestandteilen des grauen Ambras wurde Dihydro-γ-jonon isoliert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310323
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 49
    Electronic Resource
    Electronic Resource
    Welkstoffe und Antibiotika. 9. Mitteilung. Der hydrolytische Abbau des Lycomarasmins (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 860-869 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Hydrolyse des aus Fusurium lycopersici isolierten Welkstoffes Lycomurusmin liefert je 1 Mol Ammoniak, Glycin, vollständig racemisierte Asparaginsäure und Brenztraubensäure. Andere Spaltstücke konnten nicht gefunden werden, insbesondere liess sich kein Serin nachweisen, das als Vorstufe der Brenztraubensäure in Frage kam. Das unter Ammoniak-Abspaltung entstehende Inaktivierungsprodukt des Welkstoffes (Substanz J) gibt analoge Hydrolysen-Resultate.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310327
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 50
    Electronic Resource
    Electronic Resource
    Eine neue Modifikation der Isochinolinsynthese nach Pomeraz-Fritsch (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 914-924 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde eine neue Modifikation der Isoehinolinsynthese yon Pomeranz-Fritsch ausgearbeitet, bei welcher ein leicht zugängliches Amin mit Glyoxal-semiacetal zu einer Schiff'schen Base kondensiert und diese dann wie üblich in ein Isochinolinderivat übergeführt wird. Die neue Methode gibt bei einfachen Isochinolinderivaten gute Ausbeuten, jedoch misslang es, nach dieser Methode Pepaverin darzustellen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310332
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 51
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles LXIII. Sur l'huile essentielle de Micromeria abyssinica (Hochst.) Benth., source de d-isomenthone (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 932-936 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'essence de Micromeria abyssinica (Hochst.) Benth. = Melissa abyssinica Hochst. (Labiée) est constituée principalement par un melange de d-isomenthone et de d-pulégone. Plusieurs des caractéres physiques de la d-isomenthone différent de ceux jusqu'à présent déerits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310335
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 52
    Electronic Resource
    Electronic Resource
    Bei der Redaktion eingelaufene Bücher (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 976-976 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310341
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 53
    Electronic Resource
    Electronic Resource
    Konstitution des Sarmentogenins. Glykoside und Aglykone, 36. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 993-1004 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Sarmentogenin wurde zu 3β, 11α-Diacetoxy-ätiocholansäure-methylester abgebaut, wodurch die Konstitution und Konfiguration bis auf die Stellung der tertiären HO-Gruppe bewiesen wurde.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310404
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 54
    Electronic Resource
    Electronic Resource
    Axerophten, der dem Vitamin A zu Grunde liegende Kohlenwasserstoff (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1048-1054 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird eine Synthese des dem Vitamin A zugrunde liegenden Kohlenwasserstoffs, des Axerophtens, beschrieben. Axerophten ist Vitamin A-aktiv.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310408
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 55
    Electronic Resource
    Electronic Resource
    Über Carbonsäuren des Thiazols (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1342-1349 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird über die Synthesen und die Eigenschaften der Thiazol-2,4-dicarbonsäure und der Thiazoltricarbonsäure berichtet. Weiterhin wird die Darstellung der 4-Methylthiazol-2-essigsäure aus dem Thioamid des Malonsäureäthylesters und die Darstellung der Thiazol-4-essigsäure-5-carbonsäure beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310519
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 56
    Electronic Resource
    Electronic Resource
    Elektronengasmodell zur quantitativen Deutung der Lichtabsorption von organischen Farbstoffen I (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1441-1455 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Lage des Maximums der ersten (im Sichtbaren liegenden) Absorptionsbande von symmetrischen Cyaninfarbstoffen wird ermittelt unter Zugrundelegung eines Modells der Farbstoffmolekel, welches analog ist zu dem insbesondere von Sommerfeld als Modell für das Metall verwendeten Bild des freien Elektronengases. Die π-Elektronengas der Polymethinkette werden als eindimensionales, freies Elektronengas betrachtet, welches sich der Polymethinkette entlang hinzieht.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310602
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 57
    Electronic Resource
    Electronic Resource
    Synthese der racemischen und der optisch aktiven Formen des Sulforaphans (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1497-1505 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Dihgdroderivat des in den Samen von Raphanus sstivus vorkommenden Sulforaphens, das L- Sulforaphan, dessen Antipode und das D, L-Sulforaphan wurden synthetisiert. Zwischenprodukte der Synthese sind die optisch aktiven und das racemische 4-Methyl-sulfoxyd-n-butylamin. Das aus dem L-4-Methyl-sulfoxyd-n-butylamin erhaltene Harnstoffderivat erwies sich mit dem aus naturlüchem Sulforaphen gewonnenen analogen Produkt in jeder Hinsicht identisch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310608
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 58
    Electronic Resource
    Electronic Resource
    Recherches sur l'amidon, 42. Dosages des acides formés lors de l'oxydation des polyols parle periodate (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1540-1545 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On décrit une méthode de dosage des groupes acides, en particulier de l'acide formique, produits lors de l'oxydation des polyols par le periodate. En tenant compte exactement du changement du Ph provoqué par la transition de IO6H2… en IO3, on arrive à, une précision supérieure à celle des méthodes décrites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310613
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 59
    Electronic Resource
    Electronic Resource
    Estérases I. Dosage d'activité de la lipase de pancréas de porc (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1571-1576 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Une nouvelle méthode alcali-acidimétrique pour le dosage d'activité de la lipase de pancréas de pore est décrite. La méthode est sensible, précise et rapide, et utilise le Tween 20 (laurate de polyhydroxyéthylène-sorbitane) comme substrat.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310617
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 60
    Electronic Resource
    Electronic Resource
    Neue Katalysatoren zur Polymerisation der Äthene bei Raumtemperatur (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1624-1630 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch die Auffindung der Fähigkeit der Sulfinsäuren zur Anregung der Polymerisation der Äthene bei erniedrigten Temperaturen lässt sich insbesonders die Blockpolymerisation zu Plexiglas bei Raumtemperatur gut durchführen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310625
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 61
    Electronic Resource
    Electronic Resource
    Evonosid, ein krystallisiertes, herzwirksames Glykosid aus Evonymus europaea L., II. Mitteilung. Glykoside und Aglykone, 38. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1655-1662 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Isolierung des Evonosids aus den Samen von Evonymus europaea L. wurde in wenig abgeänderter Form wiederholt und die Ausbeute leicht verbessert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310628
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 62
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Triterpene. 134. Mitteilung. Über die Identität des Genins A aus den Wurzeln der Primula officinalis Jacquin und Primula elatior Jacquin mit 2, 16 (oder 22), 28-Trioxy-oleanen (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1760-1761 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde die Identität des Genins A (C30, H50O3) aus Wurzeln der Primula officinalis Jacpuin und der Primula elatior Jacquin mit dem aus Echinocystsaure zugänglichen 2,16 (oder 22), 28-Trioxy-oleanen bewiesen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310641
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 63
    Electronic Resource
    Electronic Resource
    Die Reduktion von α-Aminocarbonsäureestern zu Aminoalkoholen mittels Lithiumaluminiumhydrid (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1617-1623 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Reduktion mit Lithiumaluminiumhydrid wurde aus den entsprechenden Estern von α-Aminocarbonsäuren die folgenden Aminoalkohole dargestellt: D, L-Phenylalaninol, L(-)-Phenylalaninol, L(-)-Tyrosinol, L(+)-Alaninol, L(+)-Leucinol, L,(+)-2-Oxymethylpyrrolidin (L(+)-Prolinol), L(+)-2-Aminobutandiol-(1,4) (L(+)-Asparaginol), D, L-2-Aminobutandiol-(1,4) (D, L-Asparaginol) und 2-Amino-propandiol-( 1,3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310624
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 64
    Electronic Resource
    Electronic Resource
    Synthese der 3-Isopropyl-6-methylhomophtalsäure (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1663-1669 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde die Synthese der 3-Isopropyl-6-methylhomophtalsäure beschrieben. Diese Säure erhielt man durch einen oxydativen Abbau unter Ringaufspaltung mit Wasserstoffperoxyd aus dem 4-Methyl-7-isoprop-α-indanon-glyoxylester oder der entsprechenden Hydroxymethylenverbindung des 4-Methyl-7-isopropyl-α-indanons. Sie konnte durch Oxydation mit KMn4 z. T. in das bekannte 3-Isopropyl-6-methylphtalsäureanhydrid und z. T. in eine Säure der Bruttoformel C113H14O6 übergeführt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310629
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 65
    Electronic Resource
    Electronic Resource
    Versuche zur Synthese von Verbindungen der Steroidreihe. 2. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1706-1713 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Synthese von 5,8-Dimethoxy-2-tetralon, ausgehend von2-Methoxy-butadien und Benzochinon, beschrieben. Ferner werden die Kondensation von 1-Methyl-butadien und Benzochinon und die Überführung des erhaltenen Kondensationsproduktes in 1,4-Dimethoxy-5-methyl-naphtalin beschrieben.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310633
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 66
    Electronic Resource
    Electronic Resource
    Sur les enzymes amylolytiques VII. L'isophosphorylase et la formation de polysaccharides ramiflés (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1735-1739 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: La phloridzine, fort inhibiteur de la phosphorylase, n'inhibe pas l'isophosphorylase. L'adjonction de la phloridzine à un mélange de phosphorylase et d'isophosphorylase modifie le rapport des concentrations actives des deux enzymes, sans changer la teneur de la solution en impuretés.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310637
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 67
    Electronic Resource
    Electronic Resource
    Sulla costituzione degli eteri enolici dell'acetonossalato d'etile (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1740-1745 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: a) Durch Behandlung von Acetonoxalester mit o-Ameisensäureester, Alkohol und Ammonchlorid nach der Vorschrift von Claisen entsteht nicht der α-Enoläther, wie der genannte Autor angibt, sondern das γ-Isomere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310638
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 68
    Electronic Resource
    Electronic Resource
    Sur les enzymes amylolytiques IX. Stabilité et désactivation de l'α-amylase de pancréas de porc (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1839-1844 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'α-amylase de pancréas de pore pure est stable.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310649
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 69
    Electronic Resource
    Electronic Resource
    Weitere Abbauversuche mit Ouabagenin (II). Glykoside und Aglykone, 41. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2111-2117 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Bildung von 2 verschiedenen Tetraacetaten A und B aus analysen-reinem Ouabagenin wird bestätigt. Vorsichtige saure Hydrolyse von Monoaceton-ouabagenin-diacetat sowie von Anhydro-ouaba-genin-diacetat gibt 2 verschiedene Stoffe, wahrscheinlich Di-acetate, die als α- und β-Ouabagenin-diacetat bezeichnet werden. Jedes gibt bei weiterer Acetylierung wieder die Tetraacetate A und B.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310729
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 70
    Electronic Resource
    Electronic Resource
    Etudes sur les matiéres végétales volatiles LXXII. Sur un p-menthanol-4 fondant à 53° (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1937-1943 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'hydrogénation en phase liquide, au contact de nickel de Raney, du l-terpinhe-1-0l-4 live un p-menthanol-4 F. 53°, dont le phényluréthane F. 140°.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310709
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 71
    Electronic Resource
    Electronic Resource
    Über die tuberkulostatische Wirkung des 8-Oxychinolins und des 4-Oxybenzthiazols (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1975-1977 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die tuberkulostatische Wirkung des isosteren Verbindungspaares: 8-Oxychinolin, 4-Oxybenzthiazol in vitro ermittelt und gefunden, dass die dem Chinolinderivat zukommende Aktivität bei dem Benzthiazolderivat fehlt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310714
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 72
    Electronic Resource
    Electronic Resource
    Synthese einiger Pterine (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2051-2056 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Herstellung folgender Pterine wird beschrieben: 2-Äthyl-thio-6-oxypteridin, 2-Äthylthio-6-oxy-8,9-diphenylpteridin, 2-Äthyl-thio-6-oxy-8,9-dimethylpteridin, 2-Äthylthio-6-oxy-8,9-phenanthreno-pteridin, 2-Äthylthio-6-oxy-8,9-acenaphtenopteridin, 6-Amino-iso-xanthopterin-carbonsäure, Desimino-isoxanthopterincarbonsäure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310719
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 73
    Electronic Resource
    Electronic Resource
    Über Bestandteile der Nebennierenrinde und verwandte Stoffe. 81. Mitteilung. Pregna-4, 11-dien-21-ol-3, 20-dion-acetat (Δ11:12-Anhydro-corticosteron-acetat) und eine weitere Teilsynthese von 11-Dehydro-corticosteron (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2076-2079 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Synthese des Pregna-4,11-dien-21-ol-3,20-dion-acetats (Δ11:12-Anhydrocortieosteron-acetats) wird beschrieben und seine Konstitution durch Abbau bewiesen. Der Stoff erwies sich als verschieden von den zwei aus Corticosteron gewonnenen Anhydro-corticosteron-acetaten und auch verschieden von dem dabei als Nebenprodukt erhaltenen Stoff vom Smp. 169°.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310723
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 74
    Electronic Resource
    Electronic Resource
    Thevetin II. Glykoside und Aglykone, 39. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2097-2104 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Methoden, die keine Konfigurationsänderung an den massgebenden Asymmetriezentren verursachen, ist Neriifolin einerseits in 3β-Acetoxy-ätiocholansäure-methylester, andrerseits in Digitoxigenon übergeführt worden. Neriifolin und Thevetin enthalten als Aglykon somit Digitoxigenin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310727
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 75
    Electronic Resource
    Electronic Resource
    Über das chemische Verhalten von radioaktiven Stoffen in unwägbaren Mengen bei Fällungsreaktionen (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2124-2127 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ks wird versucht, für das Verhalten von radioaktiven Stoffen in unwägbaren Mengen bei Abscheidungsvorgängen eine übersichtliche Einteilung aufzustellen. Diese Zusammenstellung sol1 das Aussuchen eines geeigneten Trägers bzw. zweckmässiger Anlagerungsbedingungen bei einem vorgegebenen Radioelement erleichtern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310731
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 76
    Electronic Resource
    Electronic Resource
    Untersuchungen über die freien Aminosäuren im Blute bei verschiedener Ernährung. I. Die essentiellen Aminosäuren (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2148-2158 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310736
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 77
    Electronic Resource
    Electronic Resource
    Über Steroide. 83. Mitteilung. Die Synthese des natürlichen Oestrons. Totalsynthesen in der Oestronreihe III (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2173-2183 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ausgehend von einem sterisch einheitlichen Ketoester der Phenanthrenreihe (Ia), wird die Synthese zweier racemischer Oestrone XI a und XIb beschrieben. XIa erwies sich als wirksam und über das l-Menthoxyacetat wurde daraus das natürliche ( +)-Oestron gewonnen. Damit ist erstmalig seine Totalsynthese durchgeführt.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310739
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 78
    Electronic Resource
    Electronic Resource
    Über Steroide und Sexualhormone. 157. Mitteilung. Über die reduktive Aufspaltung von Steroid-epoxyden mit Lithiumaluminiumhydrid, II. Eine neue Synthese der Cortico-Steroide J und 0 (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2210-2214 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde ein neuer Weg zur Bereitung von 17α-Oxy-Steroiden beschrieben. Diese entsprechen in der Konfiguration des Asymmetriezentrums 17 bekanntlich den 17-Oxy-Cortico-Steroiden. Die natürlichen Substanzen J und 0 wurden nach dieser Methodik partialsynthetisch hergestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310743
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 79
    Electronic Resource
    Electronic Resource
    Recherches sur les équilibres de dissociation des sulfates de calcium, de potassium et de sodium, seuls ou en présence d'adjuvants (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2220-2235 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dans la première partie du mémoire, on a rappelé les développements théoriques fondés sur les formules de la thermodynamique chimique, qui permettent d'évaluer l'effet produit par un adjuvant sur la dissociation thermique des corps solides. La formule à laquelle ces développements ont abouti  -  elle relie une expression de la variation de la constante d'équilibre au gain thermochimique dû à l'action de l'adjuvant  -  a servi de base de discussion pour l'interprétation des résultats trouvés dans la partie expérimentale.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310745
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 80
    Electronic Resource
    Electronic Resource
    Bei der Redaktion eingelaufene Bücher (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 2264-2264 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310755
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 81
    Electronic Resource
    Electronic Resource
    Welkstoffe und Antibiotika. 7. Mitteilung. Über die Isolierung neuartiger Antibiotika aus Fusarien (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 594-602 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Untersuchung von fünf verschiedenen Fusarienstämmen, die in vitro alle spezifisch gegen Mycobacterien antibiotisch wirksam waren, wurden in reiner Form zwei neuartige Antibiotika isoliert. Eine als En niatin A (C24H42O6N2) bezeichnete verbindung liess sich aus F. orthoceyas var. enniutinurn Stamm ETH 1523 und aus F. scirpi Lamb. et Fautr. Stamm ETH 1536 erhalten, wahrend die Fusarien Stamm ETH 4363 und ETH 1574 ein Enniatin B (C24H42O6N2)genanntes Antibiotikum lieferten. Die Isolierung dieser chemisch und physikalisch als einheitlich charakterisierten Stoffe wird eingehender beschrieben.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310240
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 82
    Electronic Resource
    Electronic Resource
    Recherches préliminaires effectuées à l'aide du radio-zinc 65 (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 633-642 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ces recherches préliminaires effectuées à l'aide du radio-zinc 65 nous ont permis de conclure que: 1la réaction d'échange Zn⇄Zn++ entre la surface du zinc métallique et les ions dissous a lieu en solution de pH 5: elle n'atteint pas très rapidement un éat d'èquilibre; elle cesse au bout de quelques heures, aunt que l'équilibre d'échange ci-dessus soit atteint, par suite probablement de l'altération superficielle du métal;2la pellicule superficielle n'échange plus, ou n'échange que très lentement, le zinc combiné qu'elle contient avec les ions dissous;3la vitesse d'activation d'une lame de zinc doit correspondre àla vitesse de formation de cette pellicule bloquant les centres actifs d'échange;
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310245
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 83
    Electronic Resource
    Electronic Resource
    Erratum (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 672-672 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310250
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 84
    Electronic Resource
    Electronic Resource
    Komplexone X. Erdalkalikomplexe von o, o'-Dioxyazofarbstoffen (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 678-687 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Von vier verschiedenen Eriochromschwarzfarbstoffen wurden die Aciditätskonstanten gemessen und die Bildungskonstanten der Komplexe mit Ca und Mg ermittelt. Es wurden Strukturformeln für die versehiedenen Farbstufen und Komplexionen angegeben.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310303
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 85
    Electronic Resource
    Electronic Resource
    Sur les glucosides formés par addition des alcools au triacetyl-glucosane-α 〈1,2〉 β 〈1,5〉 (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 736-736 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310308
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 86
    Electronic Resource
    Electronic Resource
    Über die Konstitution des Eugenons (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 748-752 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Eugenon, ein Inhaltsstoff aus wild wachsenden Gewürznelken, besitzt die Bruttoformel C13H16O5. Seine Konstitution des 2,4, 6- Trimethoxy-benzoylacetons folgt aus Abbaureaktionen und dem Vergleich mit einem synthetischen Produkt. Das Eugenon stellt den ersten in der Natur aufgefundenen Vertreter des Benzoylacetons dar.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310310
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 87
    Electronic Resource
    Electronic Resource
    Über die enzymatische Decarboxylierung von β-Keto-carbonsäuren (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 795-798 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde gezeigt, dass in verschiedenen Arten von Schimmelpilzen ein Ferment vorkommt, welches die Fähigkeit besitzt, mittlere β-Ketocarbonsäuren zu decarboxylieren und in Ketone überzuführen. Dieses Ferment ist verschieden von der Carboxylase und den α-Aminosäurendecarboxylasen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310316
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 88
    Electronic Resource
    Electronic Resource
    Zur Kenntnis der Triterpene. 127. Mitteilung. Überführung des Taraxasterols in Hetero-lupan (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 813-817 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Der pentacyclische, ungesattigte Alkohol Taraxasterol, welcher in Blüten und Wurzeln verschiedener Kompositenarten vorkommt, wurde in den bekannten Kohlenwasserstoff Hetero-lupan übergeführt und dadurch in die Lupeol-Betulin-Untergruppe der Triterpene eingereiht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310320
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 89
    Electronic Resource
    Electronic Resource
    Zur kolorimetrischen Milchsäurebestimmung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 831-849 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Unter Hinweis auf die Permanganatmethode von Pürth-Charnass und unter Hinweis auf das Destillationsverfahren von Lepper wurde, ausgehend von der von Deraigés beschriebenen Farbreaktion mit Guajakol, eine neue Methode zur kolorimetrischen Bestimmung der Milchsäure mit Hilfe des Stufenphotometers beschrieben. Die Spezifität der Farbreaktion mit Guajakol wurde einer besonderen Prüfung unterzogen. Die Körper, welche mit Guajakol ebenfalls eine mehr oder weniger ausgeprägte, die kolorimetrische Milchsäurebestimmung störende Farbreaktion geben, sind in einer Tabelle gruppenweise zusammengestellt (vgl. die Spalten 1 und 2).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310324
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 90
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des Kohlenstoffringes. 46. Mitteilung. 2,6-Polymethylen-benzochinone (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 870-876 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus 2,6-Polymethylen-4-nitro-phenolen (I) wurde über die 2,6- Polymethylen-4-amino-phenole (II) die Reihe der ringhomologen 2,6-Polymethylen-benzochinone(III) (n = 10-19) hergestellt. Das 2,6-Hexamethylen-benzochinon (III n = 9) konnte aus 2,6-Hexamethylen- 4-nitro-phenol durch Einwirkung von Blei(IV)-acetat in Eisessig gewonnen werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310328
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 91
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles LXII. Sur la constitution et sur la synthése d'irones (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 893-914 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: La d, l-α-irone dont la phényl-4-semiearbazone F. 174,5-175,5°, et que j'ai produite synthétiquement dés 1944 aprés avoir reconnu en 1943 la structure tie l'α-irone d'iris, paraít posséder la structure trans (2,6) tandis que l'a-irone d'iris posséderait au moins pour la plus grande part la structure cis (2,6). L'une et l'autre livrent des préparations de β-irone que ne distingue que le pouvoir rotatoire.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310331
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 92
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Reaktion von Borsook und Dubnoff I. Die Hemmung der Reaktion durch Malonat (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 942-957 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Bildung von Arginin aus Citrullin und Glutaminsäure im Leberhomogenat (Ratte) wird durch Malonat gehemmt. Es wird bei Gegenwart von Malonat Bernsteinsäure angehäuft, deren Menge der gleichzeitig gebildeten Argininmenge (gemessen als Harnstoff) mindestens äquivalent ist.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310337
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 93
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des Dithioamids der Pimelinsäure (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1350-1351 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus Pimelinsäure wurde über das Diamid und das Dinitril das Dithioamid dargestellt. Die Kondensation dieses Dithioamids mit ω-Bromacetophenon führte zu α,ω-[Di-4-phenyl-thiazolyl-( 2)]-n-pen-tan, mit Chloraceton wurde α,ω-[Di-4-methyl-thiazolyl-( a)]-n-pentan erhalten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310520
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 94
    Electronic Resource
    Electronic Resource
    Äussere Abmessung einer statistisch geknäuelten Fadenmolekel in beliebiger Richtung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1677-1690 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden Beziehungen ermittelt für die Häufigkeit W(X) des Auftretens bestimmter Werte der Maximalabmessung X eines statistischen Knäuels in beliebig gewählter Richtung, sowie für den Mittelwert X.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310631
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 95
    Electronic Resource
    Electronic Resource
    Identifizierung der Zuckerkomponente des Sarmentosid-A als L(-)-Talomethylose. Synthese der krystallisierten L(-)-Talomethylose. Desoxyzucker, 20. Mitteilung (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1719-1723 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Zuckerkomponente des Sarmentosid-A konnte krystallisiert und durch Vergleich mit synthetischem Material als L(-)-Talomethylose identifiziert werden. Dieser Zucker ist damit erstmals krystallisiert und in einem Naturprodukt aufgefunden worden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310635
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 96
    Electronic Resource
    Electronic Resource
    Bei der Redaktion eingelaufene Bücher (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1884-1884 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310657
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 97
    Electronic Resource
    Electronic Resource
    Über Steroide und Sexualhormone. 156. Mitteilung. Über die reduktive Aufspaltung von Steroid-epoxyden mit Lithiumaluminiumhydrid, I. Synthese von 3β,5-Dioxy-koprostan (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1885-1890 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Lithiumaluminiumhydrid eignet sich gut zur reduktiven Aufspaltung bestimmter Steroid-epoxyde. In den untersuchten Fällen verlief die Hydrierung sterisch einheitlich und eröffnete damit erstmals einen präparativ günstigen Weg zur Bereitung von Derivaten des 5-Oxy-koprostans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310702
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 98
    Electronic Resource
    Electronic Resource
    Methode zur Trennung polarer von unpolaren Molekeln (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1929-1936 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In der vorliegenden Arbeit wurde der Versuch unternommen, polare und unpolare Stoffe in einem Flüssigkeitsgemisch mit Hilfe eines inhomogenen elektrischen Feldes von einander zu trennen. Hierzu wurden drei verschiedene Methoden angewandt.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310708
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 99
    Electronic Resource
    Electronic Resource
    Preparazione di ulteriori α-cheto-γ-lattoni e scissione termica degli α-cheto-γ-lattoni con sostituenti alchilici in posizione γ (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1953-1962 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A. Durch Kondensation von Na-oxalessigester mit n-Butyraldehyd und Önanthaldehyd und nachfolgende Ketonspaltung wurden γ-n-Propyl- und γ-n-Hexyl-α-keto-γ-lacton hergestellt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310711
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 100
    Electronic Resource
    Electronic Resource
    Die Wirkungsweise verschiedener Effektoren auf die Aktivität der alkalischen Nierenphosphatase (Magnesium, Mangan, Na-Carbonat-Hydrogencarbonat, Ammonium-Ionen und Aminosäuren). 2. Mitteilung über Phosphatasen (1948)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 31 (1948), S. 1943-1953 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Es wird die Wirkungsweise verschiedener Effektoren auf die pH-Aktivitätskurve der alkalischen Nieren-Phosphatase (Rohextrakt aus Rattenniere) untersucht. Wird deren gesamter Verlauf (pH 8-10) berücksichtigt, so können drei Arten von Effektorenwirkungen unterschieden werden.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19480310710
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...