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  • 1986  (6,522)
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  • 101
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    [s.l.] : Nature Publishing Group
    Nature 322 (1986), S. 441-444 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Our concept of magnetospheric imagery proposed here originated with the interpretation of high-sensitivity, high-resolution observations of the solar 304-A emission line intensity resonantly scattered by He^ in the plasmasphere. The observations were obtained by an extreme-ultraviolet telescope on ...
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  • 102
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    Nature 322 (1986), S. 467-470 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 shows a model of the cellular mechanism of Cl secretion by airway epithelia6. Chloride enters the cell at the basolateral membrane coupled to Na"1" on an electrically neutral co-transport process. Chloride then leaves the cell across a Cr-conductive apical membrane; regulation of the Cl ...
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  • 103
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    Nature 322 (1986), S. 484-484 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MIYATA ETAL. REPLY-We have shown previously1 that the IgE-BF cDNA from a rat-mouse T-cell hybridoma2 exhibits a strong sequence homology to the Syrian hamster IAP3 at the nucleotide level in the 3' two-thirds of the protein-coding region, whereas the remaining 5' one-third shows no obvious ...
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  • 104
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    Nature 322 (1986), S. 296-296 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHILE the publication this month of the results of compulsory blood tests for the acquired immune deficiency syndrome (AIDS) virus in potential military recruits in the United States has provided valuable, and to some extent disturbing, information on. the spread of the virus, monitoring attempts ...
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  • 105
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    Nature 322 (1986), S. 481-483 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Partially purified preparations of this Vitreoscilla haem-protein, which was previously called soluble cytochrome o, contained NADH-cytochrome o reductase activity, exhibited slow turnover of the NADH, oxygen consumption, and it was presumed that this protein functioned as a soluble terminal ...
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  • 106
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    Nature 323 (1986), S. 128-131 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A solution to the long-standing problem of how honey bees detect polarized light from the sky is presented. The mechanism involves the transformation of polarization information into modulations of perceived brightness while the bee scans the sky by rotating its field of view. Using this technique ...
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  • 107
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    Nature 323 (1986), S. 132-133 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A decade ago, Rubin et al.1 reported evidence of anisotropy of the Hubble flow on surprisingly large scales. This result has been questioned on several grounds2'3, but re-analyses of the original data4'5 and independent observations6'7 have yielded similar conclusions. Most recently, Collins et al6 ...
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  • 108
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    Nature 323 (1986), S. 134-136 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1982, 3C273 became the first quasar to have its infrared to radio spectrum fully determined5. At that time there had been no evidence of any significant variability of the l,100-|xm (ref. 2) or 2.2-jxm (ref. 3) fluxes over a period of several years. This spectrum is shown in Fig. la, and shall ...
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  • 109
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    Nature 323 (1986), S. 138-140 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Nitrogen isotopic measurements performed by Prombo and Clayton7'9 were restricted by sensitivity limitations to a comparison of the total nitrogen extracted from metal and silicate inclusions with that extracted from the parent sample. Interestingly, the bulk meteorite gave higher 515N values (+923 ...
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  • 110
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    Nature 323 (1986), S. 136-138 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] On 10 April 1984 the crew of Space Shuttle flight 41-C recovered surfaces from the Solar Maximum Mission spacecraft. The surfaces had been exposed to meteoroid bombardment for 4.15 yr, at orbital altitudes ranging from 500 to 570 km. Among the materials recovered from Solar Max were thermal control ...
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  • 111
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    Nature 323 (1986), S. 141-143 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure 1 shows schematically the equipment which we used to investigate the sea-to-air transfer of radionuclides by a bubble-bursting mechanism. Bubbles (200-1,000 jjum diameter) are generated by passing air through a glass frit below the sea surface; when they burst, the droplets formed are drawn ...
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  • 112
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    Nature 323 (1986), S. 143-144 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two remarkable features of the continental crust, illustrated in Fig. 1, have been recognized in recent geophysical results from western Europe and North America. Deep seismic profiles1"4 show many short, flat or slightly arcuate reflectors below -10-15 km depth, in contrast to an upper crust which ...
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  • 113
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    Nature 323 (1986), S. 147-149 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The term 4Old Red Sandstone' (ORS) has been used since 182211 to describe the Devonian-age, largely terrestrial, red-bed fades of sandstones, conglomerates, breccias and volcanic rocks of northern Britain5. Similar Devonian terrestrial red-bed fades are found in East Greenland12 and Norway13'15. ...
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  • 114
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    Nature 323 (1986), S. 150-152 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Samples for this study were collected from the Romushi section, one of several tectonically exposed localities in the intermontane Kashmir basin in northwestern India. The boat-shaped Kashmir basin (33Â30'-30Â30' N, 74Â-75Â30' E) comprises unconsolidated gravel-sand-mud successions which have come ...
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  • 115
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    Nature 322 (1986), S. 305-305 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE birthday of oxygen is generally taken to be 1 August 1774, the day on which Joseph Priestley used a twelve-inch lens to focus the Sun's rays on the red calx of mercury (HgO), thereby liberating a gas in which "a candle burned...with a remarkably vigorous flame" (Priestley, J. in Experiments and ...
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  • 116
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    Nature 323 (1986), S. 152-153 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The pied flycatcher (Ficedula hypoleuca, Muscicapinae), a hole-nesting, migratory, territorial bird species, can easily be attracted to nest boxes. It is sexually dimorphic in plumage, and males have a very complex song repertoire. Some males achieve polygyny by being polyterritorial13'14. Males ...
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  • 117
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    Nature 323 (1986), S. 154-156 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Visual orientation of dipteran flies has been investigated for 40 years, mainly with emphasis on stimulus-induced turning responses5'6. Investigations rely on so-called open-loop experiments, in which the animal is partially immobilized so as to prevent its behaviour from interfering with the ...
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  • 118
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    Nature 323 (1986), S. 156-158 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Retinogeniculate terminals in newborn kittens can be recognized easily by their round synaptic vesicles and unique, pale mitochondria1314. These terminals make simple, synaptic contacts almost exclusively with dendrites, via unusually large synaptic contact regions (Fig. la). By 8 weeks postnatal, ...
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  • 119
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    Nature 322 (1986), S. 318-318 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SEDIMENT transport dynamics is of great importance in several disciplines, each of which, in its traditional garb, approaches the subject from a special standpoint and with particular perceived needs. This is why it is so hard to write about it well. Sedimentologists and geomorphologists are best ...
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  • 120
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    Nature 322 (1986), S. 321-322 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two years ago I was one of 14 signatories of a letter to the Times about miracles '. All of us were professors of science in British universities; six were Fellows of the Royal Society. We asserted: "It is not logically valid to use science as an argument against miracles. To believe that miracles ...
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  • 121
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    Nature 322 (1986), S. 335-339 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Ml3 coat protein spans the Escherichia coli plasma membrane with its amino-terminus facing the periplasm. It is made as a precursor—the procoat—with a typical leader peptide. Mutations which destroy the basic character of the carboxy-terminal domain of procoat, a domain which is ...
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  • 122
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    Nature 322 (1986), S. 345-347 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Among conjugated polyenes, polyenynes, and related polymers, polyacetylene (PA), (-CH=CH-)m, has the smallest band gap, with a value of 1.5 eV (ref. 3). Among the aromatic and hetero-aromatic conjugated polymers, polythiophene (PT) (Fig. la with X = S) has the smallest band gap, with a value of ...
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  • 123
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    Nature 322 (1986), S. 354-356 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PHN1611 is a sheared garnet peridotite5. The bulk composition is given in Table 1 along with analyses of the constituent mineral phases. The composition (Mg/Mg + Fe = 0.87; CaO/Al2O3 = 1.19) is close to pyrolite6 and is thought to represent undepleted or fertile mantle Iherzolite7. The melting ...
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  • 124
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    Nature 322 (1986), S. 363-365 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recent research has shown that ASL has developed as a fully autonomous language. It has complex organizational properties shared by the spoken languages of the world, but it also has grammatical devices not derived from spoken language; thus, ASL is a separate language, not a manual rendering of ...
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  • 125
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    Nature 322 (1986), S. 198-198 
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    Notes: [Auszug] New Delhi INDIA is still not sure when or how to get its multipurpose Insat I-C satellite launched into geostationary orbit to provide continuity in its space-based meteorological, television and telecommunications services. Under a contract with the US National Aeronautics and Space ...
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  • 126
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    Nature 323 (1986), S. 171-173 
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    Notes: [Auszug] Human A431 carcinoma cells serve as a useful system for studying changes in tCa2"1"^, phosphoinositide metabolism and proto-oncogene expression in response to physiological stimuli and Ca2+ ionophores7"9. Addition of natural PA (25 (xgmr1) to A431 cells loaded with the fluorescent Ca2 indicator ...
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  • 127
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    Notes: [Auszug] Around 10-20% of human tumour DNA samples have been shown to contain an oncogene detectable in the NIH 3T3 DNA transfection assay14"16. In almost all of these cases the oncogene is a member of the ras gene family17'19. There are three functional ras genes in the-human genome, c-Ha-ras-1, c-Ki-ras-2 ...
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  • 128
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    Nature 323 (1986), S. 176-178 
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    Notes: [Auszug] Figure 1 shows the effects of various proteases on r-DNA complexes. Complex formation between T and the yeast tRNAflu gene was analysed by a gel retardation assay11. We reasoned that any large reduction in size of r (relative molecular mass, Mr ~ 300,000)4 by selective proteolysis should markedly ...
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  • 129
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    Nature 323 (1986), S. 178-181 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A A clone containing the grp-1 gene was isolated from a petunia genomic library. The coding and immediate flanking sequences of the grp-1 gene contained on subclone p7RI-Pst and p7D3-1200 were sequenced (Fig. la). The sequence contains a single, continuous open-reading-frame (ORF) of 1,152 ...
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  • 130
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    Nature 323 (1986), S. 182-184 
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    Notes: [Auszug] We have previously shown3 that, when rat adipocytes are incubated for up to 3 h in the absence of adenylate cyclase stimulators and phosphodiesterase inhibitors, the level of cAMP remains constant.-Here we find that the capacity of the Gs subunit of adenylate cyclase to be ADP-ribosylated by ...
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  • 131
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    Nature 323 (1986), S. 184-184 
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    Notes: [Auszug] Nature 322, 661-664 (1986). THE title of this letter should read as above. The version originally printed is ...
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  • 132
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    Nature 323 (1986), S. 185-186 
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    Notes: [Auszug] BURBIDGE, Narlikar and Hewitt1 (BNH) have recently resurrected the notion that there may be a significant excess of close pairs of quasars (QSOs) with different redshifts. If true, this would constitute an argument against the cosmological interpretation of redshifts. BNH report such an effect, but ...
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    Nature 323 (1986), S. 186-186 
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    Notes: [Auszug] BURBIDGE ET AL. REPLY-In answer to Shaver's comments we wish to make the following points: (1) We did not reference most of the work cited by him (his refs 2-5) because it refers to pairs of much wider angular separation than ours. We wish to emphasize again that it is the pairs with very small ...
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    Nature 323 (1986), S. 186-186 
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    Notes: [Auszug] RECENTLY, Toh et al1, reported the detection of nucleotide sequence homology between segments of a rodent IgE-binding factor (IgE-BF) gene2 and a Syrian hamster intracisternal A particle (IAP) genome3. Toh et al proposed that the IgE-BF gene is a hybrid gene which evolved very recently by ...
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    Nature 323 (1986), S. 187-187 
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    Notes: [Auszug] STUDIES of the relationship between molecular structure and biological function have gained impetus from improvements in our ability to make changes, both specific and random, in the genetic material, and to observe the functional manifestations of these changes. One approach in particular, called ...
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    Nature 323 (1986), S. 188-188 
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    Notes: [Auszug] IT burst on the scene a few months ago and is already stealing into laboratories across the United States - Applied Biosystems' automated DNA sequencer, the model 370A (Reader Service No. 100). Based on a non-radioactive chemistry developed at the California Institute of Technology, the 370A ...
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    Nature 322 (1986), S. 219-219 
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    Notes: [Auszug] THIS is a curious book. Its origins lie in the recognition, by the Board on Basic Biology of the United States National Research Council's Commission on Life Sciences, that it should be concerned with the basic biology of ecosystems. The first aspect of ecology to receive the Board's attention was ...
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    Nature 322 (1986), S. 228-232 
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    Notes: [Auszug] Methotrexate, a folate antagonist, blocks import into mitochondria of mouse dihydrofolate reductase fused to a mitochondrial presequence. Methotrexate does not mask the presequence, but stabilizes the dihydrofolate reductase moiety. It does not inhibit import of the authentic precursor from which ...
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    Nature 322 (1986), S. 238-240 
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    Notes: [Auszug] Figure 1 documents the interannual variation of rainfall in two contrasting parts of the tropical Atlantic basin, SWA (11-18 N) and NEB (3-8 S). Their rainy seasons, which occur at different times of the year (July-September core in SWA and March-April core in NEB), are associated with the two ...
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    Nature 322 (1986), S. 248-251 
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    Notes: [Auszug] To place the atmospheric conditions over the Atlantic sector during 1983-84 in context, it is helpful to review the salient features of the global tropical circulation during this period. More detailed accounts of the month-to-month variability of the global circulation are given in the seasonal ...
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  • 141
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    Nature 322 (1986), S. 261-263 
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    Notes: [Auszug] A rod mechanically isolated from the retina of the tiger salamander, Ambystoma tigrinum, was drawn, inner segment first, into a suction pipette, leaving the outer segment projecting into a solution which could be rapidly changed4. A whole-cell recording pipette was sealed against the outer segment ...
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    Nature 323 (1986), S. 8-8 
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    Notes: [Auszug] Washington US INVESTIGATORS at Lake Nios, Cameroon, where 1,700 people were killed by toxic gases on 21 August, believe the disaster was similar to one that occurred in Lake Monoun, also in Cameroon, in 1984, which killed 37 people, according to the State Department Office of Disaster Assistance. ...
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    Nature 323 (1986), S. 7-7 
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    Notes: [Auszug] Washington BRIGHTER days may lie ahead for the golden-headed lion tamarin (Leontopithe-cus chrysomelas). The National Zoo here in Washington recorded the first birth last month in a captive breeding programme established to restore numbers of the endangered species. Golden-headed lion tamarins ...
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    Notes: [Auszug] WHAT is Richard Gregory, head of the Brain and Perception Laboratory at the University of Bristol, doing bent over a snooker (pool) table? And how is it he never misses a shot? Closer inspection will reveal that he has given himself an advantage - the inside of the table is elliptical. That means ...
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    Notes: [Auszug] While Bristol's hands-on science exhibition concentrates on brain teasers, London's equivalent is more attuned to catching the imagination of the younger visitor. Under development for several years, "Launch Pad" was officially launched last week at the Science Museum. Most of the 70 exhibits are ...
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    Nature 323 (1986), S. 9-9 
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    Notes: [Auszug] New Delhi INDIA'S RAPP-1 nuclear-power reactor in Rajasthan state seems set to gain an unenviable world record as the first reactor to be prematurely retired. It has been in service for just eight years. The Canadian-built 230 MW (E) pressurized heavy-water reactor has been out of action since ...
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    Notes: [Auszug] Washington THE first field test of bacteria that have been genetically engineered to protect plants against frost damage will not, after all, take place this year. The University of California, which is proposing the test, last month agreed with opponents that it would re-examine safety issues ...
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    Notes: [Auszug] UNITED Nations funds are helping to set up a new research and development centre for solar energy in the Afghan capital of Kabul, according to the official news agency Bakhtar. The foundation stone was laid on 5 August and construction is due to be completed by 1990, Facilities are to include ...
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    Nature 323 (1986), S. 10-10 
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    Notes: [Auszug] SIR-Contrary to your headline-writer's caption to the letter (Nature 322, 402; 1986) about the proposed move of the Royal Greenwich Observatory (RGO) to Cambridge, the RGO move is NOT OK. The move to Cambridge is merely the least of several evils - but the Science and Engineering Research Council ...
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    Notes: [Auszug] SIR-Your correspondents in the somewhat unfortunately titled letter "RGO move OK" (Nature 322, 402; 1986), claim that Nature does not fully realize the implications of the move of the Royal Greenwich Observatory (RGO) to Cambridge. This shortcoming is clearly not unique. They state that the move ...
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    Nature 322 (1986), S. 1-2 
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    Notes: [Auszug] How should grant-making agencies manage their relations with those parts of the research community that rely on them for support? That is the question most urgently prompted by the decision of the British Science and Engineering Research Council (SERC) last week that the Royal Greenwich Observatory ...
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    Nature 322 (1986), S. 3-3 
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    Notes: [Auszug] Hamburg A ROW over the West German space programme has resulted in the sacking of the head of the Department for Space Affairs. Aeronautics and Traffic Research. Wolfgang Finke, a Social Democrat, was removed from the post he has held for 13 years by the Minister of Research and Technology, Heinz ...
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    Nature 322 (1986), S. 5-5 
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    Notes: [Auszug] BRITAIN has become the first foreign country to win a substantial contract for research in the US Strategic Defense Initiative (SDI). On Tuesday last week, George Younger, the Secretary of State for Defence, and Caspar Weinberger, his opposite number in the United States, signed a 10 million letter ...
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    Notes: [Auszug] Washington ELEVEN US senators have signed a letter to President Reagan urging him to give his personal support to the Superconducting Supercollider (SSC), the 40 TeV proton-proton collider now at the design stage. Without strong White House support, the senators say the project "cannot go ...
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    Nature 323 (1986), S. 14-15 
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    Notes: [Auszug] PRECIPITATION brings both benefits and problems to the plant life of an ecosystem, as demonstrated by several recent reports. Rainfall provides a source of nutrients which may be critically important to the recovery of some ecosystems when they experience catastrophes, or, as in the pine savannas ...
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    Nature 323 (1986), S. 12-13 
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    Notes: [Auszug] THE first membrane channels to be seen clearly in electron-microscope images were those at gap junctions, described by David Robertson1 a little more than 20 years ago. The molecular characterization of these channels has recently taken an important step forward, as the primary sequence for a ...
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    Nature 323 (1986), S. 16-17 
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    Notes: [Auszug] ONE of the strangest things about the universe is its handedness or chirality. A recent conference assembled a variety of specialists, from particle physicists to psychologists, to discuss all aspects of chiral symmetry breaking. These ranged from the preponderance among spiral galaxies of rotation ...
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    Nature 323 (1986), S. 18-18 
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    Notes: [Auszug] THE classic studies by Sutherland and co-workers1 on the mechanism of action of glucagon and adrenaline on the liver are fundamental to the concept that many hormone actions are mediated by the intracellular messenger cyclic (c)AMP. Although it is now clear that there are other important ...
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    Nature 322 (1986), S. 19-19 
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    Notes: [Auszug] SIR-The yearly carbon balance is unbalanced: man-made emissions of carbon dioxide into atmosphere, through combustion of fossil fuels and deforestation, are not fully accounted for by ocean adsorption and measured increase of CO2 in the atmosphere. Man can operate powerful disturbances on ...
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    Nature 322 (1986), S. 20-20 
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    Notes: [Auszug] HOWIE REPLIES-Specimen charging effects certainly can disrupt the imaging process in the electron microscope, giving rise for example to sudden and large image displacements. It seems unlikely, however, that this can account for the majority of the observed apparent changes of structure, ...
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    Notes: [Auszug] SIR-Recent correspondence on the ethics of using a recombinant DNA probe to diagnose Huntington's chorea has not mentioned counsellors' potential legal obligation to provide such a test, regardless of their personal ethical judgement. That the G8 probe does not provide accurate diagnosis is ...
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    Notes: [Auszug] SIR-Behrensmeyer et al. l show that trampling of bones in sand can produce marks mimicking cutmarks made by flake tools. They comment that the evidence for meat-eating among early hominids is called into question by this finding. Putative cutmarks on human bones found at various historical sites, ...
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    Nature 322 (1986), S. 22-22 
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    Notes: [Auszug] WAINSCOAT ET AL. REPLY-We agree that data on (3-globin gene haplotypes1 should be analysed in relation to their evolutionary implications for human populations. Giles and Ambrose do not question our conclusion that there is a major division of human populations into African and Eurasian groups, but ...
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    Notes: [Auszug] THE history of research on Vasopressin goes back almost a hundred years, to 1895, when Oliver and Schafer showed that mammalian pituitary extracts had pressor (blood-pressure-elevating activity). Three years later Howell demonstrated that the factor responsible resided in the posterior or neural ...
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    Notes: [Auszug] The gene that is abnormal in the X-linked form of the phagocytic disorder chronic granulomatous disease has been cloned without reference to a specific protein by relying on its chromosomal map position. The transcript of the gene is expressed in the phagocytic lineage of haematopoietic cells and ...
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    Nature 323 (1986), S. 21-21 
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    Notes: [Auszug] BUREAUCRACIES that disburse money selectively are feared and disliked by the recipients, even when the rules are clear and the process just. When, as in the funding of science and technology, the basis for choice is difficult or even impossible to codify, the dissatisfaction is permanent and acute. ...
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    Notes: [Auszug] THE evolution of techniques for plant-tissue culture into a viable technology has been slower than might have been expected. This is due, in part, to the inherent plasticity of plant cells that defies most attempts to lay down general rules of behaviour at either the cellular or tissue level. In ...
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    Notes: [Auszug] Search for extra safety BY the time the operators of the Chernobyl Number 4 reactor pressed the SCRAM button to close it down it was already too late. That is one of the conclusions of the modelling studies by which Soviet scientists have simulated the course of events leading up to the accident. ...
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    Nature 323 (1986), S. 26-27 
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    Notes: [Auszug] CONFUSION in the Chernobyl control room could only have been increased by the way in which the planned test was delayed. The first steps to close down the reactor for its planned maintenance were taken at 01:00 on 25 April, when the staff began to reduce the thermal power output of 3,200 MW. ...
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    Nature 322 (1986), S. 27-32 
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    Notes: [Auszug] A detailed study of a geomagnetic reversal shows that during the transition the geomagnetic field undergoes both short-and long-term fluctuations. The first are thought to be linked to the reversal process; the second are present with the same time constants both before and during the reversal. ...
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    Nature 322 (1986), S. 7-7 
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    Notes: [Auszug] EUREKA, the long-heralded but somewhat formless European programme of industrial cooperation on high-technology products, came a little more into shape on Monday, with the ministerial conference in London that marked the end of Britain's six-month secretaryship of the programme and the approval of ...
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    Notes: [Auszug] Washington THE US Air Force has announced plans to build at least twelve medium launch vehicles (MLVs) as an alternative to the space shuttle for launching military pay-loads. In seeking the new rocket, the Air Force has indicated it wants potential suppliers to develop a commercial version of the ...
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    Nature 322 (1986), S. 86-89 
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    Notes: [Auszug] When the dinucleotide CpU or pCpU is incubated with the Tetrahymena pre-rRNA, the RNA is cleaved exactly at its 3' splice site and the dinucleotide is covalently ligated to the 3' exon10. This reaction can be explained as an intermolecular version of exon ligation, because it occurs with ...
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    Nature 322 (1986), S. 92-95 
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    Notes: [Auszug] JEOL is offering a scanning electron microscope at a price that is more typical of advanced optical models (Reader Service No. 100). The T100, a compact and relatively simple instrument, is aimed at laboratories engaged in medical or botanical research and sold for 15,000 (UK). Image contrast and ...
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    Nature 322 (1986), S. 95-95 
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    Notes: [Auszug] A review published in the 29 May issue of Nature (Vol. 321, p. 543) gave an incorrect price for Porton Products Ltd's streptavidin. In the United Kingdom, the chemical costs 5 per 0.5 mg, not 100 mg as previously stated. Porton Products sells streptavidin in 100 mg quantities for ...
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    Nature 321 (1986), S. 797-798 
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    Notes: [Auszug] UNIVERSITIES are nothing without students, but in most places operate in a sellers' market and are over full. Not so in impoverished Britain, where an elaborate system for meeting part of students' maintenance costs out of public funds is once again to be scrutinized by a group of civil servants ...
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    Nature 321 (1986), S. 801-801 
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    Notes: [Auszug] Washington ENTHUSIASM is running high for a new report released today that charts a course for government-sponsored efforts to understand global environmental changes in the coming decades. Written by the Earth System Science Committee (ESSC) for the National Aeronautics and Space Administration ...
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    Nature 321 (1986), S. 802-802 
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    Notes: [Auszug] A NEW prize has been launched by the European Molecular Biology Organisation (EMBO). A medal and DM15,000 (4,500) is to be awarded each year to an outstanding young European molecular biologist: the aim is to try to help European scientists to gain international recognition as quickly as their US ...
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    Nature 321 (1986), S. 805-805 
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    Notes: [Auszug] Washington DESPITE delays in construction forced on it by the courts, the United States Army has defended its plans to build a biological aerosol test facility (BATF) at the Dugway proving ground. In a report to Congress, the Army calls BATF a "small but critical facility" needed to provide ...
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    Nature 321 (1986), S. 806-806 
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    Notes: [Auszug] SIR-On behalf of the International Recovery and Management Committee for the golden-headed lion tamarin, I was delighted to read the News item entitled "Tamarins to go home" (Nature 320, 674; 1986). Tom Milliken, director of WWF Traffic (Japan), is to be complimented on his contribution to the ...
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    Nature 321 (1986), S. 809-810 
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    Notes: [Auszug] PERHAPS the biggest surprise of the Voyager 2 fly-by of Uranus was the discovery that the planet's magnetic field axis is tilted as much as 60 with respect to its rotation axis. Moreover, with Uranus tipped on its side, a highly tilted magnetic field produces a particularly unusual magnetosphere. ...
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    Notes: [Auszug] SMALL gelatinous masses that annually, about this time, cause the sea-water to become what fishermen call "foul", are now in great abundance on this coast. A pocket lens makes evident the presence of large specimens of the diatom Eucampia britannica that are seen as perfect spirals, some of which ...
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    Nature 321 (1986), S. 813-814 
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    Notes: [Auszug] How can we determine the bulk chemical composition of the Earth? Analysing the right rocks tells us about the uppermost few hundred kilometres, and below this various indirect techniques can provide some constraints on the bulk physical properties, such as density. But for the past two decades, the ...
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    Notes: [Auszug] SIR-Since the evening of 30 April 1986, when a series of thunderstorms brought down heavy fallout from Chernobyl along the northern flank of the Alps, we have conducted high-resolution y spectro-scopy measurements on rain water, on a high-efficiency particulate air (HEPA) filter and on various ...
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    Nature 321 (1986), S. 824-825 
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    Notes: [Auszug] JOHN Seinfeld defines air pollution as "any atmospheric condition in which substances are present at concentrations high enough ... to produce a measurable effect on man, animals, vegetation, or materials". Dusts, pollen, smoke and volcanic gases and ash can undoubtedly exert deleterious effects, ...
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    Nature 321 (1986), S. 826-826 
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    Notes: [Auszug] DR NEEDHAM'S series Science and Civilisation in China, which he began some 30 years ago, needs little introduction here. This latest volume is by Needham himself, with the collaboration of Li Gwei Djen (Cambridge) and Huang Hsing-Tsung (Washington). Part 2 of Vol. 6, Agriculture, by Francesca Bray, ...
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    Nature 321 (1986), S. 851-854 
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    Notes: [Auszug] The Hollinger (Timmins)-McIntyre (Schumacher)-Coni-aurum-Vipond-Moneta-Crown vein system located in the Abitibi greenstone belt, 550 km north-north-west of Toronto, is 5 km long, a maximum of 2 km wide, and has been mined to a depth of 2.4km (7,875-ft level, Mclntyre mine). End-1984 ...
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    Nature 321 (1986), S. 812-813 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE distinguished computer scientist Donald Knuth once remarked that a major difference between mathematics and computer science is that mathematicians do not, on the whole, worry about the cost of an algorithm - solution of a problem is paramount and the efficiency of the method is a secondary ...
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    Nature 321 (1986), S. 817-819 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Measurements of the gamma-radioactivity of the surface air in Paris after the Chernobyl accident have shown that the maximum concentrations of 137Cs over a period of three days were 400 times greater than during the worldwide fallout of 1963. Preliminary estimates of ground deposition of n7Cs, ...
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    Nature 321 (1986), S. 821-822 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Immediately after news of the accident at Chernobyl became available on 28 April, the National Radiological Protection Board (NRPB) was asked by the UK Foreign and Commonwealth Office (FCO) for an appraisal of the radiation situation, on the basis of which advice would be given to embassy ...
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    Nature 321 (1986), S. 825-825 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] JOHN Polkinghorne is Honorary Professor of Theoretical Physics in the University of Kent, a Fellow of Trinity College, Cambridge, and the Vicar of Blean, Kent. In his brilliant and artful exposition of contemporary physics (The Particle Play, published by W.H. Freeman in 1979), Polkinghorne ...
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Analyses of stratigraphically continuous suites of samples from Upper Proterozoic sedimentary successions of East Greenland, Spitsbergen and Nordaustlandet (Svalbard) provide an approximation to the secular variation in carbon isotope ratios during a geologically and biologically important period ...
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    Nature 323 (1986), S. 74-76 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In previous studies the rat CD8 (0X8) antigen was purified from thymocytes, the chains separated and a limited amount of peptide sequence obtained from each chain6. From the 37K chain two peptides were isolated with the sequences ELQDSNKNK and FVKQF-K. A 14-residue oligonucleotide probe with all ...
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  • 194
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    Notes: [Auszug] There are at least 20 homoeo box genes in Drosophila (W. McGinnis, personal communication). Thus far, 11 of these genes have been isolated and characterized11"23. Using the homoeo box derived from the Sex combs reduced (Ser)7'22'23 locus as a probe, we have isolated several additional genes ...
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  • 195
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    Notes: [Auszug] To analyse the biological activities of recombinant human GM-CSF on simian progenitor cells, adherence-depleted simian bone marrow mononuclear cells were plated in 0.9% methyl-cellulose cultures at a cell concentration of 2.5 x 104 cells per ml. In this culture system, picomolar concentrations of ...
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    Nature 321 (1986), S. 887-888 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Paecilomyces sp. NF1 (ATCC 20766) was isolated from compost soil from Denver, Colorado. The medium used for isolation contained (g I"1): yeast extract 3, yeast nitrogen base (Difco) 4, peptone 3, xylose 2 and agar20 (for plates). The pH of the medium was adjusted to 2.5 with dilute hydrocloric ...
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    Nature 321 (1986), S. 714-714 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] FRENCH university presidents walked out of a meeting with the new research and higher education minister, Alain Deva-quet, last week, after hearing that France is to abandon its newly-created PhD degree, much welcomed by natural scientists for its similarities to the research degrees of Britain and ...
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    Nature 321 (1986), S. 716-716 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A RADICAL reorganization of Soviet higher education is on the cards. In what is called a draft proposal, published last week, the Central Committee of the Soviet Communist Party says the time has come for curricula to be "retuned" and for the administration of higher education to be simplified. ...
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    Nature 321 (1986), S. 718-718 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Luxembourg RESEARCH ministers of the twelve member states of the European Economic Community (EEC) meeting here last week refused to triple the research budget of EEC, demanding that the European Commission, which administers EEC affairs, be more "realistic" in its requests. The Commission, ...
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    Nature 321 (1986), S. 564-564 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MUCH of our current understanding of cortical function has been gained by analysing how different types of information are represented in a systematic fashion within the three-dimensional architecture of the cortex. This is most evident in the case of primary visual cortex (striate cortex) of ...
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