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Berlin Brandenburg

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  • Science  (67)
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  • 1
    Article
    Article
    In: Science, June 14, 1996, Vol.272(5268), p.1598(1)
    Description: Bacteria often practice autoinduction, in which a molecule released and reabsorbed by the same cell adjusts genetic expression according to local density of signalling cells. Autoinducers, first noticed in luminescent bacteria, were identified in Agrobacterium tumefaciens by Margaret More.
    Keywords: Bacteria -- Research ; Cell Interactions -- Research ; Bioluminescence -- Research ; Genetic Regulation -- Research
    ISSN: 0036-8075
    E-ISSN: 10959203
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  • 2
    Language: English
    In: Science, 11 February 2005, Vol.307(5711), pp.884-890
    Description: Understanding the behavior of the universe at large depends critically on insights about the smallest units of matter and their fundamental interactions. Inflationary cosmology is a highly successful framework for exploring these interconnections between particle physics and gravitation. Inflation makes several predictions about the present state of the universe-such as its overall shape, large-scale smoothness, and smaller scale structure-which are being tested to unprecedented accuracy by a new generation of astronomical measurements. The agreement between these predictions and the latest observations is extremely promising. Meanwhile, physicists are busy trying to understand inflation's ultimate implications for the nature of matter, energy, and spacetime.
    Keywords: Physical sciences -- Astronomy -- Astronomical cosmology ; Physical sciences -- Physics -- Astronomical cosmology ; Physical sciences -- Astronomy -- Astronomical cosmology ; Physical sciences -- Astronomy -- Energy ; Physical sciences -- Physics -- Mathematical physics ; Physical sciences -- Physics -- Linear algebra ; Mathematics -- Pure mathematics -- Fundamental forces ; Physical sciences -- Physics -- Matter ; Physical sciences -- Physics -- Astrophysics ; Physical sciences -- Astronomy -- Astrophysics
    ISSN: 00368075
    E-ISSN: 10959203
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  • 3
    Language: English
    In: Science, August 9, 2019, Vol.365(6453), p.550(2)
    Description: In the summer of 1969, just a month before the Woodstock festival, hundreds of millions of people watched American astronauts walk on the surface of the Moon and return safely to their home planet. A half-century later, the confluence of the Ages of Aquarius and Apollo presents historians of science...
    Keywords: Music Festivals
    ISSN: 0036-8075
    E-ISSN: 10959203
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  • 4
    Language: English
    In: Science, 01 October 2004, Vol.306(5693), pp.33-33
    Description: A small but influential US research institute known for exploring links between lifestyle and cancer has closed its doors after 35 years. The Institute for Cancer Prevention, the only center funded by the National Cancer Institute that focused solely on prevention, declared bankruptcy last week and has...
    Keywords: Research Centers ; Bankruptcy ; Cancer ; National Cancer Institute ; Institute for Cancer Prevention;
    ISSN: 00368075
    E-ISSN: 10959203
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  • 5
    Language: English
    In: Science (New York, N.Y.), 11 October 2013, Vol.342(6155), pp.224-7
    Description: Structural rearrangements control a wide range of behavior in amorphous materials, and visualizing these atomic-scale rearrangements is critical for developing and refining models for how glasses bend, break, and melt. It is difficult, however, to directly image atomic motion in disordered solids. We demonstrate that using aberration-corrected transmission electron microscopy, we can excite and image atomic rearrangements in a two-dimensional silica glass-revealing a complex dance of elastic and plastic deformations, phase transitions, and their interplay. We identified the strain associated with individual ring rearrangements, observed the role of vacancies in shear deformation, and quantified fluctuations at a glass/liquid interface. These examples illustrate the wide-ranging and fundamental materials physics that can now be studied at atomic-resolution via transmission electron microscopy of two-dimensional glasses.
    Keywords: Atomic Structure -- Research ; Imaging -- Methods ; Silicon Dioxide -- Atomic Properties ; Silicon Dioxide -- Structure ; Glass -- Atomic Properties ; Glass -- Composition ; Glass -- Structure;
    ISSN: 00368075
    E-ISSN: 1095-9203
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  • 6
    In: Science, Feb 21, 2003, Vol.299(5610), p.1160(2)
    Description: After a nearly 5-month delay, the U.S. Congress last week finished work on the 2003 federal budget. The $397 billion package includes major increases for the National Institutes of Health, the National Science Foundation, and NASA. But President George W. Bush's 2004 budget request would dramatically slow growth for those and several other science agencies.
    Keywords: Science Organizations -- Finance ; Budgets ; Government Spending Policy ; Budgeting ; Nonprofit Organizations
    ISSN: 0036-8075
    E-ISSN: 10959203
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  • 7
    In: Science, Oct 26, 2001, Vol.294(5543), p.761(2)
    Description: The US government last week took the first steps toward developing a coordinated scientific effort to combat terrorism. The National Academy of Sciences has begun its own effort to shape government research plans in the wake of the Sep 11, 2001 terrorist attacks.
    Keywords: Government Research And Development Contracts -- Management ; Science Policy -- Management ; High Technology Industry -- Management ; Research Funding ; Science ; Research Institutes
    ISSN: 0036-8075
    E-ISSN: 10959203
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  • 8
    Language: English
    In: Science, 21 August 1998, Vol.281(5380), pp.1202-1206
    Description: Nitrogen-fixing bacteroids in legume root nodules are surrounded by the plant-derived peribacteroid membrane, which controls nutrient transfer between the symbionts. A nodule complementary DNA (GmSAT1) encoding an ammonium transporter has been isolated from soybean. GmSAT1 is preferentially transcribed in nodules and immunoblotting indicates that GmSAT1 is located on the peribacteroid membrane. [$^{14}$C]methylammonium uptake and patch-clamp analysis of yeast expressing GmSAT1 demonstrated that it shares properties with a soybean peribacteroid membrane NH$_4^+$ channel described elsewhere. GmSAT1 is likely to be involved in the transfer of fixed nitrogen from the bacteroid to the host.
    Keywords: Biological sciences -- Biology -- Mycology ; Health sciences -- Medical conditions -- Diseases ; Biological sciences -- Biology -- Cytology ; Applied sciences -- Food science -- Foodstuffs ; Physical sciences -- Chemistry -- Chemical compounds ; Biological sciences -- Biology -- Botany ; Biological sciences -- Biology -- Botany ; Physical sciences -- Chemistry -- Chemical compounds ; Biological sciences -- Biology -- Microbiology ; Physical sciences -- Chemistry -- Chemical compounds
    ISSN: 00368075
    E-ISSN: 10959203
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  • 9
    In: Science, March 9, 2001, Vol.291(5510), p.1882
    Description: Scientists are happy about another huge proposed boost for the National Institutes of Health, but they say there's more to science than biomedical research. Instead of openly complaining, scientists are stepping up efforts to convince Congress to rewrite the budgets of the National Science Foundation and other losers in the opening round of the 2002 budget contest.
    Keywords: Medical Research -- Finance
    ISSN: 0036-8075
    E-ISSN: 10959203
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  • 10
    Language: English
    In: Science (New York, N.Y.), 31 August 2018, Vol.361(6405), pp.834
    Keywords: Financial Support ; Intellectual Property ; Theft ; Biomedical Research -- Economics ; National Institutes of Health (U.S.) -- Economics
    ISSN: 00368075
    E-ISSN: 1095-9203
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