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  • Nature Publishing Group  (29,689)
  • 1995-1999  (12,082)
  • 1980-1984  (17,607)
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  • 1
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    The planktonic life of octopuses (1995)
    Nature Publishing Group
    In:  Nature, 377 (6545). p. 107.
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    Publication Date: 2017-07-04
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  • 2
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    Yet more danger for coelacanths (1995)
    Nature Publishing Group
    In:  Nature, 374 (6520). p. 314.
    Details
    Publication Date: 2017-07-06
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  • 3
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    Relative departures in July temperatures in northern Canada for the past 6,000 yr (1981)
    Nature Publishing Group
    In:  Nature, 289 (5794). pp. 164-167.
    Details
    Publication Date: 2016-04-11
    Description: There has been concern about recent temperature trends and the future effects of CO2 concentrations in the atmosphere1,2; but instrumental records only cover a few decades to a few centuries and it is essential that proxy data sources, such as pollen spectra from peats and lake sediments, be carefully interpreted as climate records. Several workers have shown statistically significant associations between the modern pollen rain and climatic parameters, an approach that by-passes the recognition of pollen/vegetation units. Statistically defined equations that associate abiotic and biotic elements are called transfer functions. We report here on the application of transfer function equations to nine middle and late Holocene peat and lake sediment sequences from northern Canada (Fig. 1).
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  • 4
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    Particulate organic carbon flux in the oceans-surface productivity and oxygen utilization (1980)
    Nature Publishing Group
    In:  Nature, 288 (5788). pp. 260-263.
    Details
    Publication Date: 2016-03-01
    Description: Organic detritus passing from the sea surface through the water column to the sea floor controls nutrient regeneration, fuels benthic life and affects burial of organic carbon in the sediment record. Particle trap systems have enabled the first quantification of this important process. The results suggest that the dominant mechanism of vertical transport is by rapid settling of rare large particles, most likely of faecal pellets or marine snow of the order of 〉200 μm in diameter, whereas the more frequent small particles have an insignificant role in vertical mass flux4–6. The ultimate source of organic detritus is biological production in surface waters of the oceans. I determine here an empirical relationship that predicts organic carbon flux at any depth in the oceans below the base of the euphotic zone as a function of the mean net primary production rate at the surface and depth-dependent consumption. Such a relationship aids in estimating rates of decay of organic matter in the water column, benthic and water column respiration of oxygen in the deep sea and burial of organic carbon in the sediment record.
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  • 5
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    Acoustic observations of heat content across the Mediterranean Sea (1997)
    Nature Publishing Group
    In:  Nature, 385 . pp. 615-617.
    Details
    Publication Date: 2017-02-27
    Description: The ability to monitor the heat content of oceans over long distances is becoming increasingly important for understanding the role of oceans in climate change, for determining the variability of the state of the oceans, for operational ocean observing systems, and for studying large-scale ocean processes such as water-mass formation. Although the properties of the upper layers of the ocean can be routinely measured on large scales by satellite remote sensing (providing altimetric and infrared data) and with expendable probes dropped from commercial vessels, the deep interior of the ocean is more difficult to monitor. Ocean acoustic tomography1 is a promising technique for such applications, as it has the potential to provide systematic, instantaneous and repeated measurements of the ocean interior over large parts of an ocean basin. Here we demonstrate the capability of this technique for measuring the heat content across an entire (albeit small) ocean basin—the western Mediterranean Sea.
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  • 6
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    Two-way exchange between the Easter mantle plume and the Easter microplate spreading axis (1996)
    Nature Publishing Group
    In:  Nature, 382 (6589). pp. 344-346.
    Details
    Publication Date: 2017-02-27
    Description: The conventional model whereby plume volcanism forms linear age-progressive volcanic chains, with the youngest activity occurring nearest a spreading axis (at a 'hotspot'), has been challenged for the Easter seamount chain1–4. Whereas early work suggested the existence of a linear melting anomaly (a 'hotline')1,2, more recent studies3,4 have proposed a hotspot near Salas y Gomez island, connected with the Easter microplate spreading system by an ~800-km-long, volcanically active plume channel. Here we use geochemical, geological and geochronological data to argue that the hotspot lies close to Easter Island. Moreover, new isotopic data for lavas from the seamount chain provide evidence for bidirectional flow between the spreading axis and the plume, thus supporting geophysical and fluid-dynamical models of mantle flow in a plume/spreading axis system5–7. Material balance and flux considerations show the Easter plume to be weak and cool compared with those beneath larger features such as Iceland, Hawaii and the Galápagos islands.
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  • 7
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    Oceanography: All change in the Arctic (1999)
    Nature Publishing Group
    In:  Nature, 397 (6718). pp. 389-391.
    Details
    Publication Date: 2015-07-16
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  • 8
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    Chlorin accumulation rate as a proxy for Quaternary marine primary productivity (1996)
    Nature Publishing Group
    In:  Nature, 383 (6595). pp. 63-65.
    Details
    Publication Date: 2017-02-27
    Description: A knowledge of past changes in the biological productivity of the oceans is important for understanding the interactions between carbon cycling and climate. Phytoplankton productivity in today's oceans can be estimated from the concentrations of chlorophyll in sea water1, but chlorophyll is not preserved in the sediments. Existing proxies for past algal productivity do not represent total productivity; for example, biogenic opal2 reflects the contribution of only part of the phytoplankton community, and the organic carbon record can be subject to contamination from terrestrial inputs2,3. Although chlorins, the pigment-transformation products of chlorophyll, are widespread in Quaternary marine sediments, their potential as proxy measures of past variations in primary productivity has not been convincingly demonstrated. Here we report a high-resolution molecular stratigraphic record of chlorin concentrations over the past 350,000 years in a sediment core from the subtropical Atlantic continental margin. Maxima in the chlorin accumulation rate coincide with significant peaks in the accumulation rates of biogenic opal (at the end of glacial terminations) and organic carbon (between terminations). These results suggest that chlorins, unlike other proxies, can serve as a measure of total primary productivity variations.
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  • 9
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    Basin-scale ocean circulation from combined altimetric, tomographic and model data (1997)
    Nature Publishing Group
    In:  Nature, 385 . pp. 618-621.
    Details
    Publication Date: 2017-02-27
    Description: The ocean stores and transports vast quantities of heat, fresh water, carbon and other materials, and its circulation plays an important role in determining both the Earth's climate and fundamental processes in the biosphere. Understanding the development of climate and important biological cycles therefore requires detailed knowledge of ocean circulation and its transport properties. This cannot be achieved solely through modelling, but must involve accurate observations of the spatio-temporal evolution of the global oceanic flow field. Estimates of oceanic flow are currently made on the basis of space-borne measurements of the sea surface, and monitoring of the ocean interior. Satellite altimetry and acoustic tomography are complementary for this purpose1, as the former provides detailed horizontal coverage of the surface, and the latter the requisite vertical sampling of the interior. High-quality acoustic-tomographic2 and altimetric3 data are now available to test the combined power of these technologies for estimating oceanic flows. Here we demonstrate that, with the aid of state-of-the-art numerical models, it is possible to recover from these data a detailed spatio-temporal record of flow over basin-scale volumes of fluid. Our present results are restricted to the Mediterranean Sea, but the method described here provides a powerful tool for studying oceanic circulation worldwide.
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  • 10
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    Salty brines on the Mediterranean sea floor (1997)
    Nature Publishing Group
    In:  Nature, 387 . pp. 31-32.
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    Publication Date: 2017-02-28
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  • 11
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    Meandering of the subtropical front south-east of the Azores (1982)
    Nature Publishing Group
    In:  Nature, 300 (5889). pp. 245-246.
    Details
    Publication Date: 2018-03-08
    Description: A subtropical front was observed in the area south and southeast of the Azores during cruises of FS Meteor and FS Poseidon in early 1982. The front has a basically west–east extension, with considerable meandering observed. Meso-scale eddies are found on both sides. The overall flow pattern corresponds to earlier results on geopotential differences in the upper northeast Atlantic, but the baroclinic transport of the order of 107 m3 s−1 is found to be concentrated in a 60-km wide jet. We suggest here that the current band is part of the gyre circulation, resulting from a branching of the North Atlantic Current.
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  • 12
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    Increased El Niño frequency in a climate model forced by future greenhouse warming (1999)
    Nature Publishing Group
    In:  Nature, 398 (6729). pp. 694-697.
    Details
    Publication Date: 2021-02-25
    Description: The El Niño/Southern Oscillation (ENSO) phenomenon is the strongest natural interannual climate fluctuation1. ENSO originates in the tropical Pacific Ocean and has large effects on the ecology of the region, but it also influences the entire global climate system and affects the societies and economies of manycountries2. ENSO can be understood as an irregular low-frequency oscillation between a warm (El Niño) and a cold (La Niña) state. The strong El Niños of 1982/1983 and 1997/1998, along with the more frequent occurrences of El Niños during the past few decades, raise the question of whether human-induced 'greenhouse' warming affects, or will affect, ENSO3. Several global climate models have been applied to transient greenhouse-gas-induced warming simulations to address this question4, 6, but the results have been debated owing to the inability of the models to fully simulate ENSO (because of their coarse equatorial resolution)7. Here we present results from a global climate model with sufficient resolution in the tropics to adequately represent the narrow equatorial upwelling and low-frequency waves. When the model is forced by a realistic future scenario of increasing greenhouse-gas concentrations, more frequent El-Niño-like conditions and stronger cold events in the tropical Pacific Ocean result
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  • 13
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    Eddy-induced enhancement of primary production in a model of the north Atlantic Ocean (1998)
    Nature Publishing Group
    In:  Nature, 394 . pp. 266-269.
    Details
    Publication Date: 2019-02-27
    Description: In steady state, the export of photosynthetically fixed organic matter to the deep ocean has to be balanced by an upward flux of nutrients into the euphotic zone1. Indirect geochemical estimates2 of the nutrient supply to surface waters have been substantially higher than direct biological and physical measurements3, particularly in subtropical regions. A possible explanation for the apparent discrepancy is that the sampling strategy of the direct measurements has under-represented episodic nutrient injections forced by mesoscale eddy dynamics, whereas geochemical tracer budgets integrate fluxes over longer time and space scales. Here we investigate the eddy-induced nutrient supply by combining two methods potentially capable of delivering synoptic descriptions of the ocean's state on a basin scale. Remotely sensed sea-surface height data from the simultaneous TOPEX/Poseidon and ERS-1 satellite missions are assimilated into a numerical eddy-resolving coupled ecosystem–circulation model of the North Atlantic Ocean. Our results indicate that mesoscale eddy activity accounts for about one-third of the total flux of nitrate into the euphotic zone (taken to represent new production) in the subtropics and at mid-latitudes. This contribution is not sufficient to maintain the observed primary production in parts of the subtropical gyre, where alternative routes of nitrogen supply will have to be considered.
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  • 14
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    Fluxes of biogenic components from sediment trap deployment in circumpolar waters of the Drake Passage (1982)
    Nature Publishing Group
    In:  Nature, 299 (5879). pp. 145-147.
    Details
    Publication Date: 2019-01-21
    Description: Circumpolar surface waters dominate the circulation of the Southern Ocean and sustain one of the ocean's largest standing stocks of biomass thereby producing a significant output of biogenic components, mainly diatoms, to the bottom sediments. Generally transit of biogenic matter from the sea surface to the sea floor affects nutrient regeneration fuels benthic life and transfers signals to the sediment record1–5. Reliable quantification of the relationship between biological production, fractionation of skeletal and tissue components and bottom sediment accumulation depends on direct vertical flux measurements from sediment trap deployments6–9, which have proved to be most scientifically productive10–13. We now present data on vertical mass fluxes from the Southern Ocean and evidence for strong biogeochemical fractionation between organic carbon-, nitrogen- and phosphorus-containing compounds, siliceous and calcareous skeletal remains, and refractory aluminosilicates.
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  • 15
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    Glacial and interglacial wind regimes over the eastern subtropical Atlantic and North-West Africa (1981)
    Nature Publishing Group
    In:  Nature, 293 (5829). pp. 193-196.
    Details
    Publication Date: 2016-09-02
    Description: Analysis of aeolo-marine dust deposits in the subtropical eastern Atlantic enables the strength of the major wind patterns during the late Quaternary to be evaluated and gives an insight into the climate of North Africa.
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  • 16
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    Cooling the tropics (1995)
    Nature Publishing Group
    In:  Nature, 376 (6537). pp. 212-213.
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    Publication Date: 2016-06-16
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  • 17
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    Ecology: Competition and coexistence (1999)
    Nature Publishing Group
    In:  Nature, 402 . pp. 366-367.
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    Publication Date: 2017-02-28
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  • 18
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    Flavodoxin as an in situ marker for iron stress in phytoplankton (1996)
    Nature Publishing Group
    In:  Nature, 382 . pp. 802-805.
    Details
    Publication Date: 2017-02-27
    Description: A fundamental issue in marine science is the identification of the factors controlling biological uptake of CO2, in high-nitrate, low-chlorophyll regions. A recent in situ iron fertilization experiment demonstrated that iron limitation is responsible for low phytoplankton stocks in the equatorial Pacific4. Here we show that flavodoxin, a biochemical marker of iron limitation, can be used to map the degree of iron stress in natural populations. Flavodoxin assays along a 900-km east-west transect in the northeastern subarctic Pacific revealed a pronounced increase in iron stress in the region west of the 135° W meridian. Addition of dissolved iron alleviated this stress. Immunostaining of single cells from the most western station showed that flavodoxin is present specifically within the chloroplasts of diatoms. Our approach provides a rapid means of defining the extent of iron stress in the ocean5 and supports the hypothesis that diatoms are iron stressed in the northeast Pacific.
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  • 19
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    Growth limits on phytoplankton (1995)
    Nature Publishing Group
    In:  Nature, 373 . p. 28.
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    Publication Date: 2017-02-27
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  • 20
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    Seismic and geochemical evidence for large-scale mantle upwelling beneath the eastern Atlantic and western and central Europe (1995)
    Nature Publishing Group
    In:  Nature, 374 . pp. 34-39.
    Details
    Publication Date: 2017-02-27
    Description: Seismic tomography and the isotope geochemistry of Cenozoic volcanic rocks suggest the existence of a large, sheet-like region of upwelling in the upper mantle which extends from the eastern Atlantic Ocean to central Europe and the western Mediterranean. A belt of extension and rifting in the latter two areas appears to lie above the intersection of the centre of the upwelling region with the base of the lithosphere. Lead, strontium and neodymium isotope data for all three regions converge on a restricted composition, inferred to be that of the upwelling mantle.
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  • 21
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    The first fossil cephalopod statoliths to be described from Europe (1980)
    Nature Publishing Group
    In:  Nature, 287 (5783). pp. 628-630.
    Details
    Publication Date: 2016-11-15
    Description: Statoliths of cephalopods are small, hard calcareous stones which lie within the cartilaginous skulls of octopods, sepioids and teuthoids1. Fossil statoliths, clearly belonging to genera which are alive today, have previously been described from 11 Cenozoic deposits spanning from the Eocene to the Pleistocene in North America2–5. Such statoliths are of particular interest because they provide a means of studying the evolution of living cephalopod groups which have no calcareous shells, including the cosmopolitan and numerous teuthoids and octopods. Here, the first cephalopod statoliths to be recognized in European deposits are described and identified as Loligo sp. They are compared with the North American fossil Loligo species and statoliths removed from the two living Loligo species of Europe.
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  • 22
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    Mantle plume noble gas component in glassy basalts from Reykjanes Ridge (1983)
    Nature Publishing Group
    In:  Nature, 305 (5933). pp. 403-407.
    Details
    Publication Date: 2016-11-23
    Description: Basalts from the Reykjanes Ridge contain noble gases delivered from the non-degassed lower mantle by the Iceland plume. These lower mantle gases are thought to be a mixture of planetary and solar components, as would be expected if the Earth accreted from fine silicate particles.
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  • 23
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    Sex in giant squid (1997)
    Nature Publishing Group
    In:  Nature, 389 (6652). pp. 683-684.
    Details
    Publication Date: 2021-02-15
    Description: Recent captures of two female giant squid ( Architeuthis ) off southern Australia have provided the first record of a mated female specimen of these almost mythical deepsea creatures. We found sperm packages (spermatophores) embedded within the skin of both ventral arms of the larger of the two specimens. It seems that male giant squids may use their muscular elongate penis to ‘inject’ sperm packages under pressure directly into the arms of females.
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  • 24
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    Deep-breathing cephalopods? (1996)
    Nature Publishing Group
    In:  Nature, 384 (6608). p. 421.
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    Publication Date: 2021-08-20
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  • 25
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    Penguins disturbed by tourists (1995)
    Nature Publishing Group
    In:  Nature, 376 (6538). pp. 301-302.
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    Publication Date: 2018-08-15
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  • 26
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    Contribution of Southern Ocean surface-water stratification to low atmospheric CO2 concentrations during the last glacial period (1997)
    Nature Publishing Group
    In:  Nature, 389 . pp. 929-935.
    Details
    Publication Date: 2018-01-09
    Description: The nitrogen-isotope record preserved in Southern Ocean sediments, along with several geochemical tracers for the settling fluxes of biogenic matter, reveals patterns of past nutrient supply to phytoplankton and surface-water stratification in this oceanic region. Areal averaging of these spatial patterns indicates that reduction of the CO2 'leak' from ocean to atmosphere by increased surface-water stratification south of the Polar Front made a greater contribution to the lowering of atmospheric CO2 concentration during the Last Glacial Maximum than did the increased export of organic carbon from surface to deep waters occurring further north.
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  • 27
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    The internal structure of an active sea-floor massive sulphide deposit (1995)
    Nature Publishing Group
    In:  Nature, 377 (6551). pp. 713-716.
    Details
    Publication Date: 2017-02-27
    Description: THE hydrothermal circulation of sea water through permeable ocean crust results in rock–water interactions that lead to the formation of massive sulphide deposits. These are the modern analogues of many ancient ophiolite-hosted deposits1–4, such as those exposed in Cyprus. Here we report results obtained from drilling a series of holes into an actively forming sulphide deposit on the Mid-Atlantic Ridge. A complex assemblage of sulphide–anhydrite–silica breccias provides striking evidence that such hydrothermal mounds do not grow simply by the accumulation of sulphides on the sea floor. Indeed, the deposit grows largely as an in situ breccia pile, as successive episodes of hydrothermal activity each form new hydrothermal precipitates and cement earlier deposits. During inactive periods, the collapse of sulphide chimneys, dissolution of anhydrite, and disruption by faulting cause brecciation of the deposit. The abundance of anhydrite beneath the present region of focused hydrothermal venting reflects the high temperatures ( 〉 150 °C) currently maintained within the mound, and implies substantial entrainment of cold sea water into the interior of the deposit. These observations demonstrate the important role of anhydrite in the growth of massive sulphide deposits, despite its absence in those preserved on land.
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  • 28
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    Possible predictability in overflow from the Denmark Strait (1999)
    Nature Publishing Group
    In:  Nature, 397 . pp. 243-246.
    Details
    Publication Date: 2017-02-28
    Description: The overflow and descent of cold dense water from the Denmark Strait sill-a submarine passage between Greenland and Iceland-is a principal means by which the deep ocean is ventilated, and is an important element in the global thermohaline circulation. Previous investigations of its variability-in particular, direct current measurements(1,2) in the overflow core since 1986-have shown surprisingly little evidence of long-term changes in now speed. Here we report significant changes in the overflow characteristics during the winter of 1996-97, measured using two current-meter moorings and an inverted echo sounder located at different depths in the fastest part of the now. The overflow warmed to the highest monthly value yet recorded (2.4 degrees C), and showed a pronounced slowing and thinning at its lower margin. We believe that the extreme warmth of the overflow caused it to run higher on the continental slope off east Greenland, so that the lower current meters and the echo sounder were temporarily outside and deeper than the fast-flowing core; model simulations appear to confirm this interpretation, We suggest that the extreme warmth of the overflow is a lagged response to a warming upstream in the Fram Strait three years earlier (caused by an exceptional amplification of the winter North Atlantic Oscillation). If this is so, over-now characteristics may be predictable.
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  • 29
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    Giant squids may die when exposed to warm water currents (1983)
    Nature Publishing Group
    In:  Nature, 303 (5916). pp. 422-423.
    Details
    Publication Date: 2019-04-16
    Description: Strandings of the giant squid, Architeuthis monachus (Steen-strup), have always stirred attention because of the rarity and enormous size of these cephalopods. These animals have never been observed in their natural habitat and little is known about their physiology and ecology. Stranding of giant squids in Newfoundland waters has been correlated with the inflow of warm water, suggesting that increased temperature may be causing their death1. Squids have also been carried to the Norwegian coast with the warm North Atlantic current2 and on 23 August 1982 a live specimen was caught off Radöy near Bergen, Norway (Fig. 1). This catch gave an unprecedented opportunity to study the effects of temperature on the oxygen binding properties of blood from the giant squid. The present finding of an excess of a fourfold decrease in O2 affinity when temperature is increased from 6.4 to 15°C strongly suggests that giant squids may suffocate from arterial desaturation when increased ambient temperatures are experierced.
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  • 30
    Electronic Resource
    Electronic Resource
    Defining protein interactions with yeast actin in vivo (1995)
    [s.l.] : Nature Publishing Group
    Nature structural biology 2 (1995), S. 28-35 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Using the two-hybrid protein interaction reporter system, actin, profilin, Srv2p and two SH3-containing proteins are found to bind yeast actin in vivo. When tested for ability to interact with 35 actin mutations distributed over the monomer surface, distinct subsets of mutations characteristic for ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsb0195-28
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  • 31
    Electronic Resource
    Electronic Resource
    The allosteric ligand site in the V max -type cooperative enzyme phosphoglycerate dehydrogenase (1995)
    [s.l.] : Nature Publishing Group
    Nature structural biology 2 (1995), S. 69-76 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The crystal structure of the phosphoglycerate dehydrogenase from Eschehchia coli is unique among dehydrogenases. It consists of three clearly separate domains connected by flexible hinges. The tetramer has approximate 222 symmetry with the principal contacts between the subunits forming between ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nsb0195-69
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  • 32
    Electronic Resource
    Electronic Resource
    Neutron diffraction analysis of the solvent accessible volume in cubic insulin crystals (1995)
    [s.l.] : Nature Publishing Group
    Nature structural biology 2 (1995), S. 77-80 
    Details
    ISSN: 1072-8368
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] The average contact distance between protein and solvent surface atoms in cubic insulin crystals has been determined from two sets of 15 Å resolution neutron diffraction data. A contact distance between the water hydrogen sites and the protein surface that is significantly shorter than the ...
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    Translating cell biology into therapeutic advances in Alzheimer's disease (1999)
    [s.l.] : Nature Publishing Group
    Nature 399.1999, Supplementary, A23-, (9 S.) 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Studies of the molecular basis of Alzheimer's disease exemplify the increasingly blurred distinction between basic and applied biomedical research.The four genes so far implicated in familial Alzheimer's disease have each been shown to elevate brain levels of the self-aggregating amyloid-β ...
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    Emerging insights into the genesis of epilepsy (1999)
    [s.l.] : Nature Publishing Group
    Nature 399.1999, Supplementary, A15-, (8 S.) 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Epilepsy, a brain disorder that is characterized by recurrent seizures, refers to a collection of disorders that affect 1–2% of the population worldwide. A seizure is a brief change in behaviour caused by the disordered, synchronous and rhythmic firing of populations of neurons in the ...
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    Prospects for new restorative and neuroprotective treatments in Parkinson's disease (1999)
    [s.l.] : Nature Publishing Group
    Nature 399.1999, Supplementary, A32-, (8 S.) 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Parkinson's disease (PD) is one of the major neurodegenerative disorders of middle and old age, and was originally described by James Parkinson in 1817. It is characterized by a trio of cardinal symptoms—muscle rigidity, tremor and bradykinesia—but can also involve postural deficits and ...
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    The changing landscape of ischaemic brain injury mechanisms (1999)
    [s.l.] : Nature Publishing Group
    Nature 399.1999, Supplementary, A7-, (8 S.) 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] There is growing optimism among researchers in the field of brain ischaemia, as human stroke has at last become treatable and current research efforts delineate several new, potential therapies. Most strokes are caused by acute interruption of the brain arterial blood supply by a thrombus, leading ...
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    Progress in determining the causes and treatment of multiple sclerosis (1999)
    [s.l.] : Nature Publishing Group
    Nature 399.1999, Supplementary, A40-, (8 S.) 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The cause of multiple sclerosis remains unknown after more than a century of study. Unconfirmed work has once more indicated that a viral infection may be important in the aetiology of the disease, and there is considerable evidence for an important genetic influence on disease susceptibility. The ...
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    Structural evidence for dimerization-regulated activation of an integral membrane phospholipase (1999)
    [s.l.] : Nature Publishing Group
    Nature 401 (1999), S. 717-721 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Dimerization is a biological regulatory mechanism employed by both soluble and membrane proteins. However, there are few structural data on the factors that govern dimerization of membrane proteins. Outer membrane phospholipase A (OMPLA) is an integral membrane enzyme which participates in ...
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    US advisory committees: Same jobs, but less pay (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 191-191 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington FEDERAL agencies may have to stop paying consulting fees to scientists who serve on peer review panels under a new rule issued late last month by the General Services Administration. The rule, which affects advisory committees throughout the government - including some 200 committees ...
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    French research budgets: Let the good times stop (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 193-193 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AFTER months of hanging on a thread, French scientists have at last heard how much money they are really getting in 1983. Or at least the research councils have. The Centre National de la Recherche Scien-tifique (CNRS), the principal basic research council, loses 12.5 per cent of the cash it was ...
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    UK higher education: Royal Society warning on cuts (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 194-194 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Royal Society has fired an effective shot in the battle about British higher education, with a calculation, published last week, of the extent to which social mobility will affect the demand for higher education in the two decades ahead. Although the falling number of 18-year-olds throughout ...
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    Evolution by numbers (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 196-196 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - In the discussion in your columns about the application of quantitative methodology based on the study of evolutionary processes to the analysis of the development of human culture1'2, there is an unquestioned assumption on both sides of that issue that quantitative theory, as expounded by ...
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    No market for US education (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 187-188 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Reagan Administration is showing every sign of having bitten off more than it is willing to chew by its decision in 1981 to establish a national commission to review education standards in high schools. The commission's final report was expected to confirm that all was not well but not to go so ...
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    High energy physics: Structure in electrons? (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 199-199 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ARE electrons and quarks the ultimate frontier of matter or are they perhaps built from more fundamental particles so far undetected? What hope is there of answering this question in the near future? In a recent paper (Phys. Rev. Lett. 50,811; 1983), Eichten, Lane and Peskin point out that ...
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    [News ‘picture story’] (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 192-192 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE orbit of Comet IRAS-Araki-Alcock (1983d), computed from observations since its initial discovery on 26 April. The closest approach of the comet to the Earth (about 5 million kilometres) was at midday on 11 May. E marks the position of the Earth at that point. The individual circles mark the ...
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    Inversion symmetry of radio lobes in extragalactic sources (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 217-218 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recent observations of many radio jets have revealed marked departures from linearity on a variety of physical scales: for instance, a continuous bending on the very long baseline interferometer scale3*10, an oscillatory jet profile11'12, C-shaped or S-shaped bending on galactic13"15 and ...
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    Trace metal fronts in European shelf waters (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 225-227 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The near-surface samples (48) were collected aboard the RV Meteor on a transect between 28 August and 2 September 1981 (Fig. 1). The water was pumped from 6m depth (at a rate of 0.3 m3 h"1) through polyethylene tubing (from a towed stainless steel shell suspended underneath the hull) into ...
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    Uranium enrichment in Archaean crustal basement associated with overthrusting (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 235-237 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In proximity to domains of U-mineralization hydrothermal metasomatism has overprinted the regional amphibolite grade metamorphism of the gneisses on a massive scale, sporadically 40km across and 100km along strike. Albitic plagioclase is the dominant mineral in 'ore grade' zones; uraninite is ...
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    The quail's tale (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 263-263 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE neural crest is a most peculiar part of the vertebrate embryo. It originates at an early stage from the region where the neural tube pinches off from the rest of the ectoderm. While the neural tube develops into the central nervous system, the cells of the neural crest break loose from the ...
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    UV/visible spectrophotometers (1983)
    [s.l.] : Nature Publishing Group
    Nature 303 (1983), S. 266-268 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Du Pont has introduced a microprocessor-driven UV spectrophotometer with digital electronic design for use in HPLC. The detector is the newest addition to Du Font's 8800 series liquid chromatography system. The instrument has two new features: a new optical section, which incorporates a deuterium ...
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    Number crunching (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 468-469 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most mathematicians find it very difficult to explain to other people what mathematics is and why we find it so absorbing. Even our students generally take some time to see the picture. They spend three or four years studying different parts of it in detail. While this is going on, we point out ...
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    Interaction between ATM protein and c-Abl in response to DNA damage (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 520-523 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To determine whether c-Abl interacts with ATM, lysates prepared from control and AT lymphoblastoid cells, with or without prior exposure to 5 Gy of ionizing radiation, were subjected to immuno-precipitaiton with c-Abl antibody. Immunoblot analysis of the anti-c-Abl immunoprecipitate with an ...
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    A conquering man of genius (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 469-470 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Writing in a special issue of the London Times in August 1931 to celebrate the centenary of Michael Faraday's momentous discovery of electromagnetic induction, Lord Rutherford spoke for all scientists when he said: "The more we study the work of Faraday, with the perspective of time, the more we ...
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    Clinton sketches out his 'ethical guideposts' for modern biology (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 323-323 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [WASHINGTON] In the most prominent speech of his presidency on research-related issues, President Bill Clinton called last Sunday (18 May) for Americans to remember that "science is not God" adding: "Our deepest truths remain outside the realm of science." In a speech that has been noticed ...
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    Unesco bioethics experts query their remit (1997)
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    Nature 387 (1997), S. 324-324 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [PARIS] Members of the International Bioethics Committee of the United Nations Educational, Scientific ahdCulturar Organization (Unesco) appear to be divided on the issue of human cloning, on which they are due to produce an interim statement this week, In particular, many are unhappy about ...
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    Africa spearheads bid for strict rules on biosafety (1997)
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    Nature 387 (1997), S. 326-326 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [LONDON] Fifteen African countries unexpectedly seized the initiative last week at a meeting of the United Nations Biodiversity Convention by tabling detailed proposals calling on all signatories to the convention to accept tough regulations governing the use of genetically modified organisms. ...
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    France rings changes in telecoms efforts (1997)
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    Nature 387 (1997), S. 443-443 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [PARIS] France is embarking on a major reorganization of its research in telecommunications, currently carried out mainly by the Centre National d'Etudes des Telecommunications (CNET), part of the state-owned company France Telecom. The reforms include the creation of a national federation - the ...
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    Short-circuit to be avoided by bioethics committees (1997)
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    Nature 387 (1997), S. 321-321 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The human cloning debate has revealed the growing political importance of bioethics committees in the regulation of new technologies. Confronted with public concern about human cloning, the instant reflex of political leaders worldwide has been to call on the nearest bioethics committee for ...
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    Campuses ring to a stormy clash over truth and reason (1997)
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    Nature 387 (1997), S. 331-333 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Universities across the United States are slowly awakening to a rumbling debate about the nature of scientific practice and knowledge, about who is qualified to pronounce on either-and about the motivation of those who do so. You can call the argument the Science Wars, as some ...
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    European sparks fail to ignite (1997)
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    Nature 387 (1997), S. 334-334 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Despite a few light skirmishes (see opposite), and the fact that the work of various European researchers has been dragged into the conflict in the United States, the Science Wars have so far failed to ignite into a major conflagration in Europe itself. Earlier this year there were signs that ...
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    Gunfire echoes in debates on public understanding (1997)
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    Nature 387 (1997), S. 335-335 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] While US campuses, academic journals and newspapers remain the main theatres of action in the 'Science Wars', Britain has had its own 'science skirmish', with scientists and sociologists at loggerheads over the question of public involvement in science policy. The two conflicts, ...
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    There aren't plenty more fish in the sea (1997)
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    Nature 387 (1997), S. 339-339 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir- Six pages of Briefing on fisheries science (Nature 386,105-110; 1997) ably demonstrates why the fisheries sector is in crisis. The reality is that if fishermen meet the market demand for fish, fish stocks will be completely fished out within a very short time. There is only one ...
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    Vervet monkeys as travelling salesmen (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 464-464 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Vervet monkeys (Cercopithecus aethiops) forage on patchily distributed resources, visiting several sites in a single trip. When choosing a route, they face a famous optimization problem, the 'travelling salesman' problem1. Here we pose a question about their route-choosing mechanism: how many ...
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    Uncertain turtle relationships (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 466-466 
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    Notes: [Auszug] Turtles have generally been regarded as basal reptiles because they apparently retain the primitive anapsid skull pattern (no temporal fenestrae) unlike other extant reptiles which are diapsid (two temporal fenestrae on each side). However, the phylogenetic relationships between turtles and other ...
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    Deciphering an enigma (1997)
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    Nature 387 (1997), S. 362-363 
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    Notes: [Auszug] Late in life, the mathematician Kurt Godel confided that he felt the Institute for Advanced Study at Princeton University had been paying him too much. On the face of it, he had a case: after his appointment as professor, he never lectured or held a seminar, and he published almost nothing. But the ...
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    Structure of ADP·AIF 4 – -stabilized nitrogenase complex and its implications for signal transduction (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 370-376 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The coupling of ATP hydrolysis to electron transfer by the enzyme nitrogenase during biological nitrogen fixation is an important example of a nucleotide-dependent transduction mechanism. The crystal structure has been determined for the complex between the Fe-protein and MoFe-protein components of ...
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    Synthesis and structural characterization of an AI 77 cluster (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 379-381 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the experiments described here our aim was to prepare polyhedral Al(i) compounds containing more than four Al atoms using N(SiMe3)2 ligands for protection. A solution of aluminium(i) iodide5 in a solvent mixture of toluene and diethyl ether was added to a solution of base-free LiN(SiMe3)2 at -78 ...
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    Petrological evidence for shock melting of carbonates in the martian meteorite ALH84001 (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 377-379 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The martian meteorite ALH84001 is unique in containing 1 vol.% Mg-Fe-Ca-Mn carbonates, which are dispersed in an orthopyroxenite rock with a few vol.% of plagioclase glass, chromite and silica1'2. Intensive scrutiny of the carbonates has produced many models for their origin but none satisfies all ...
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    Animal mitochondrial DMA recombination (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 247-247 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Genetic recombination is known to be a source of mitochondrial DNA (mtDNA) variability in plants, fungi and protists1, but there continues to be a consensus (based on studies of somatic cell hybridization2 and DNA repair3) that such processes do not operate on animal mtDNA4. Contrary to this ...
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    Where are the things we see? (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 550-551 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our visual perception of the direction of objects seems to be based on several inaccurate visuomotor processes, which are the subject of two studies by Ross et all and Cai etal2 on pages 598 and 601 of this issue. Even a simple sideways glance to grasp a coffee mug involves visuomotor complexities ...
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    DNA answers the call of pipistrelle bat species (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 138-139 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Groups of organisms that have been described as a single taxonomic unit on the basis of quantitative characters are increasingly proving to require more complex classification, when their evolutionary history is studied with molecular markers1. Here we report an analysis of mitochondrial DNA ...
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    How good a model is the Fugu genome? (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 140-140 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] J. Gilley et al. in Scientific Correspondence1 describe the organization of the pufferfish Surfeit locus in a letter entitled "Fugu genome is not a good mammalian model". The wide-ranging conclusions implied by this headline are not supported by the evidence and arguments presented. First, Gilley ...
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    How good a model is the Fugu genome? (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 140-140 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Gilley and colleagues1 present data on the Surfeit genes isolated from the Fugu genome. The Surfeit locus is of particular interest as the genes contained within are tightly packed in both mammals and the chicken and yet dispersed in invertebrates. Unfortunately, the data from Fugu do not support ...
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    Biochemical typing of scrapie strains (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 564-564 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Differences in the molecular heterogeneity of the abnormal isoforms of the prion protein, PrPSc, due to differential glycosylation and partial endogenous or exogenous proteo-lysis1'2 have been found in different scrapie strains3, sources of Creutzfeldt-Jakob disease (CJD) and fatal familial ...
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    From Plato to Penrose (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 141-141 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This is a ramble of a book. If there is a central theme, it is the role of visual representations in scientific discovery and theory. But in effect the 480 pages are devoted to a long nature walk through the history of physics. The walk takes us to and fro between the centuries and often - too ...
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    Biochemical typing of scrapie strains (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 564-564 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Collinge et al. reply - We recently reported that new variant CJD (vCJD) could be distinguished from previously recognized forms of sporadic and acquired CJD by a consistent pattern on western blots with respect to ratios of PrPSc glycoforms after proteinase K digestion6. This pattern resembled ...
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    Umpteenth editions and other revisions (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 567-567 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Behavioural Ecology: An Evolutionary Approach. Fourth edition by J.R. Krebs and N.B. Davies Blackwett Science, £26.50, $49.95 Like the previous three editions of this classic behavioural ecology text, this fourth edition brings together a completely new set of chapters to provide an ...
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    Nature; 386.1997, 6625, S.568 (1997)
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    Nature 386 (1997), S. 568-568 
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    Notes: [Auszug] Philippe Janvier has excelled himself with this landmark publication, which surely ranks as a modem classic. No other textbook has dealt so clearly with the origins and early evolution of vertebrates. Each chapter is lucidly written and important anatomical features are clearly illustrated, ...
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    Transcriptional activation by recruitment (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 569-577 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The recruitment model for gene activation stipulates that an activator works by bringing the transcriptional machinery to the DNA. Recent experiments in bacteria and yeast indicate that many genes can be activated by this mechanism. These findings have implications for our understanding of the ...
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    Evidence for deep mantle circulation from global tomography (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 578-584 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Seismic tomography based on P-wave travel times and improved earthquake locations provides further evidence for mantle-wide convective flow. The use of body waves makes it possible to resolve long, narrow structures in the lower mantle some of which can be followed to sites of present-day plate ...
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    Advantage of knowing nature's secrets (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 431-431 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir-Your recent News article3 on the reaction to sheep cloning suggests that "scientists agree that cloning of humans would be unethical". Indeed, a certain Jeremy Rifkin goes so far as to suggest that penalties for human cloning should be on a par with those for "rape, child abuse and murder". ...
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    Advantage of knowing nature's secrets (1997)
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    Nature 386 (1997), S. 431-431 
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    Notes: [Auszug] Sir-The publication of the experimental protocol through which Dolly came to life1 created a considerable stir in the media. In this context, the arguments put forward in your leading article4 in favour of a mere moratorium rather than total and definitive banning of this type of experiment in ...
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    Unfair treatment (1997)
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    Nature 386 (1997), S. 432-432 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir-I completely agree with Franklin D. Rumjanek about acceptance of papers from developing countries by leading Western scientific journals(Nature 384,509; 1996). I have had several bad experiences and I feel that many of my papers have been arbitrarily rejected. There is one more misdeed ...
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    Life imitating art? (1997)
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    Nature 386 (1997), S. 432-433 
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    Notes: [Auszug] Sir - I was seized with a sense ofdeja vu while reading of the summary dismissal of Dr Mark Hughes from his position as head of preimplantation and prenatal diagnosis at the US National Institutes of Health (NIH) and the disavowal by the NIH and Georgetown University of any knowledge of his actions ...
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    Scaling ridges (1997)
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    Nature 386 (1997), S. 441-441 
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    Notes: [Auszug] Witten and Li2 give a very simple scaling argument for the shape of the edge connecting two corners of an elastic icosahedron, depicted in the figure here. Any deformation that involves most of the bonds on the surface costs an energy proportional to the area; therefore, stretching has to be ...
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    Photochemical energy storage in a spatially organized zeolite-based photoredox system (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 162-164 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Zeolites are aluminosilicates whose three-dimensional structure is made up of corner-sharing SiO4 and A1O4 tetrahedra, with exchangeable cations (M"+) occupying extra framework positions to neutralize charge1'2. One of the most commonly employed materials, Y-zeolite, has a three-dimensional ...
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    Release of gelatinase A during platelet activation mediates aggregation (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 616-619 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Gelatinase A (also known as matrix metalloproteinase-2, MMP-2 or type IV collagenase; EC 3.4.24.24) has a relative molecular mass of 72,000 (72K) and belongs to the group of matrix metalloprotein-ases that are involved in remodelling the extracellular matrix. Gelatinase A is secreted as a proenzyme ...
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    Activation of prokaryotic transcription through arbitrary protein–protein contacts (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 627-630 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We replaced the carboxy-terminal domain (CTD) of the a-subunit of RNA polymerase (RNAP) (Fig. 1), which is the natural target for many transcriptional activators1"3, with a heterologous protein domain that does not ordinarily mediate transcriptional activation. To do this, we took advantage of the ...
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    The importance of coherent defence strategies (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 421-421 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Europe's particle physicists can face the future with a fair degree of satisfaction. Following recent international endorsements of CERN, they are set to occupy centre stage in the next generation of facilities at the high-energy frontiers of their discipline. European astronomers, in contrast, are ...
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    Planning rejection leaves British nuclear waste plans in disarray (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 423-424 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [LONDON] Britain's radioactive waste disposal plans were in disarray last week as Nirex, the company charged with the job of waste disposal, effectively abandoned attempts to build an underground repository at Sellafield in the northwest of England. At a meeting of Nirex's board last week, ...
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    Structure of 20S proteasome from yeast at 2.4Å resolution (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 463-471 
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    Notes: [Auszug] The crystal structure of the 20S proteasome from the yeast Saccharomyces cerevisiae shows that its 28 protein subunits are arranged as an (α1...α7, β1...β7)2 complex in four stacked rings and occupy unique locations. The interior of the particle, which harbours the ...
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    Control of spatial orientation and lifetime of scroll rings in excitable media (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 477-480 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The control of three-dimensional (3D) scroll waves is a more complex problem than the control of their two-dimensional analogues, spiral waves. The dynamics of a 3D scroll wave are determined not only by the properties of the excitable medium but also by the shape of the filament (the vortex line ...
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    Distribution and cycling of terrigenous dissolved organic matter in the ocean (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 480-482 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The annual riverine discharge (-0.4 X 1015 g) of DOM and particulate organic matter to the oceans8 consists primarily of the degraded remains of terrestrial vegetation and is considered to be refractory to biodegradation9'10. Terrigenous DOM has characteristically elevated C/N ratios, depleted ...
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    Advantage of knowing nature's secrets (1997)
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    Nature 386 (1997), S. 431-431 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir-In the Human Fertilisation and Embryology Act 1990 and the Animal (Scientific Procedures) Act 1986, the United Kingdom has a regulatory framework which was already in place and which was applied to the work on the cloning of sheep at the Roslin Institute. Nature has reported accurately and ...
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    Unfair treatment (1997)
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    Nature 386 (1997), S. 432-432 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir-Rumjanek presents the difficulties of publishing a manuscript produced by his group in Brazil, although the quality of the work was essentially the same as papers he published while he was a postdoc in England. He suggested that the referees could be influenced by the geographical location of ...
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    Not too old at 30 (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 433-433 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir-Why are advertisements for PhD students specifically directed at those who are "under 30" or a "young student"? I am surprised that a journal such as Nature should support such discrimination. Indeed, it may conflict with equal opportunities legislation. I am a mature student, one of many ...
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    Quantification of latent tissue reservoirs and total body viral load in HIV-1 infection (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 183-188 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The importance of latent reservoirs for HIV-1 is highlighted by studies of potent antiretroviral drugs that block new rounds of infection and produce a dramatic drop in plasma virus in two weeks. The rapid decline shows that virus production results largely from continuous rounds of virus infection ...
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    Robert Henry Dicke (1916–97) Physicist whose work led to the discovery of the cosmic microwave background (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 448-448 
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    Notes: [Auszug] In the exuberant world of present-day gravity physics, it is hard to picture research four decades ago when you could count the active people on your ringers. Bob Dicke, who died on 4 March, was a leader in this change, most famously in the discovery of thermal radiation from the Big Bang, which ...
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    Source of volcanic glass for ancient Andean tools (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 449-450 
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    Notes: [Auszug] Ancient hunters in southern Peru used spear points and knives made of volcanic glass (obsidian). We have located the source of the vast majority of this obsidian; a quarry on the slopes of the Cotallalli volcano in the south central Andes. Chemical analysis of obsidian from this source as well as ...
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    Electronic Resource
    Determining cortical landscapes (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 452-452 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The folded surface of the cerebral cortex contains a mosaic of functionally distinct areas, connected by a network of nerve fibres in the sub-cortical white matter. This network determines, in part, the computations that the cortex performs. The folds help to fit the large sheet-like cortex into a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/386452a0
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