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【资源】2009年9月《nature》杂志全文推荐下载
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Nature Journal 3 September 2009 Author: Nature Publisher: Nature Number of Pages: 130 Published: 2009-09-01 List price: unknow 书籍介绍(英文) EditorialsDangerous nuclear whispers p11 Voices within the Obama administration threaten to undermine nonproliferation efforts. They should be ignored. doi:10.1038/461011a Full Text | PDF (666K) Cash costs p11 Massive funding for Pakistan’s ailing universities holds many lessons for other developing nations. doi:10.1038/461011b Full Text | PDF (676K) US visa nightmares p12 Barriers faced by foreign scientists seeking entry to the United States do more harm than good. doi:10.1038/461012a Full Text | PDF (344K) Top of pageResearch HighlightsMicroscopy: Seeing the honeycomb p14 doi:10.1038/461014a Full Text | PDF (514K) Exoplanets: Explaining the eccentricities p14 doi:10.1038/461014b Full Text | PDF (514K) Biology: A colourful past p14 doi:10.1038/461014c Full Text | PDF (514K) Immunology: Killer fat p14 doi:10.1038/461014d Full Text | PDF (514K) Pain: Deep, deep in your head p14 doi:10.1038/461014e Full Text | PDF (514K) Chemistry: Bacterial factories p14 doi:10.1038/461014f Full Text | PDF (880K) Cancer biology: Cilia’s dual role p15 doi:10.1038/461015a Full Text | PDF (750K) Genetics: Yrated p15 doi:10.1038/461015b Full Text | PDF (750K) Microbiology: Resistance is futile p15 doi:10.1038/461015c Full Text | PDF (750K) Food chemistry: Beedevilled by corn syrup p15 doi:10.1038/461015d Full Text | PDF (750K) Top of pageJournal ClubJournal club p15 Richard Bennett doi:10.1038/461015e Full Text | PDF (750K) Top of page NewsNews briefing: 3 September 2009 p16 The week in science. doi:10.1038/461016a Full Text | PDF (1,087K) Climatecontrol plans scrutinized p19 The Royal Society reviews options for fighting global warming with geoengineering. Geoff Brumfiel doi:10.1038/461019a Full Text | PDF (461K) Pandemic flu: from the front lines p20 As the novel H1N1 pandemic flu virus infects people worldwide, researchers in some of the affected countries describe in their own words the scientific and publichealth challenges they face. doi:10.1038/461020a Full Text | PDF (421K) Keeping genes out of terrorists’ hands p22 Genesynthesis industry at odds over how to screen DNA orders. Erika Check Hayden doi:10.1038/461022a Full Text | PDF (604K) Stemcell projects falter p23 Ailing economy leaves California struggling to build research labs. Rex Dalton doi:10.1038/461023a Full Text | PDF (740K) Cost of climate change underestimated p24 Framework convention figure overlooks key expenses. Anjali Nayar doi:10.1038/461024a Full Text | PDF (381K) Top of pageColumnParty of OneBudget instructions p25 US science agencies may need to prove they are solving national problems. David Goldston explains. David Goldston doi:10.1038/461025a Full Text | PDF (695K) Top of pageNews FeaturesGM crops: Battlefield p27 Papers suggesting that biotech crops might harm the environment attract a hail of abuse from other scientists. Emily Waltz asks if the critics fight fair. doi:10.1038/461027a Full Text | PDF (1,856K) Arctic ecology: Tundra’s burning p34 Lightning and fires on the Arctic tundra seem to be on the rise. Jane Qiu meets the researchers learning from the scorched earth in Alaska. doi:10.1038/461034a Full Text | PDF (2,524K) Top of page CorrespondenceConservation: a small price for longterm economic wellbeing p37 Boris M. Hillmann & Jan Barkmann doi:10.1038/461037a Full Text | PDF (308K) Conservation: the world’s religions can help p37 Shonil Bhagwat & Martin Palmer doi:10.1038/461037b Full Text | PDF (308K) Defining numbers in terms of their divisors p37 D. Speijer doi:10.1038/461037c Full Text | PDF (308K) Top of pageOpinionPakistan’s reform experiment p38 In 2002, Pakistan began an ambitious overhaul of its highereducation system. The successes and failures of the experience hold lessons for other countries, say Athar Osama and coauthors. Athar Osama, Adil Najam, Shamsh KassimLakha, Syed Zulfiqar Gilani & Christopher King doi:10.1038/461038a Full Text | PDF (478K) Top of pageBooks and ArtsLike minds can be small minds p40 An adviser to US President Barack Obama argues that people’s tendency to seek out those with similar views can entrench extreme opinions. But many other forces can fuel outlandish beliefs, says Herbert Gintis. Herbert Gintis reviews Going to Extremes: How Like Minds Unite and Divide by Cass R. Sunstein doi:10.1038/461040a Full Text | PDF (1,111K) Society need not be selfish p41 Michael Tomasello reviews The Age of Empathy: Nature’s Lessons for a Kinder Society by Frans de Waal doi:10.1038/461041a Full Text | PDF (752K) Pop artist displays primitive instincts p42 A retrospective of Todd Schorr’s huge oilpainted comicbook visions features his garish image of a huntergatherer. Is it a deliberate allegory of consumer culture, asks Martin Kemp? Martin Kemp reviews Todd Schorr: American Surreal doi:10.1038/461042a Full Text | PDF (789K) Top of pageNews and ViewsAstrophysics: Hidden chaos in cosmic order p43 "Galaxies, like elephants, have long memories," says an influential article from the 1980s. Tapping into these memories has revealed some surprising facts about the history of our neighbouring Andromeda galaxy. Nickolay Y. Gnedin doi:10.1038/461043a Full Text | PDF (1,251K) See also: Editor’s summary Cancer: The fat and the furious p44 Evidence linking metabolic alterations to cancer progression is accumulating. It seems that cancer cells must sustain their energy production and remain well fed to survive detachment from their normal habitat. Eyal Gottlieb doi:10.1038/461044a Full Text | PDF (1,374K) See also: Editor’s summary Materials science: Pulsating vesicles p45 During her travels through Wonderland, Alice finds several ways of growing and shrinking in size. A polymeric vesicle plays the same trick in response to pH, in a process that might one day be useful for drug delivery. Jan C. M. van Hest doi:10.1038/461045a Full Text | PDF (1,322K) Structural biology: A channel with a twist p47 Mechanosensitive channels release tension in cell membranes by opening ’pressure relief’ pores. The structure of a partially open channel suggests a gating mechanism and delivers an unexpected architectural twist. Valeria Vásquez & Eduardo Perozo doi:10.1038/461047a Full Text | PDF (1,526K) See also: Editor’s summary 50 & 100 years ago p48 doi:10.1038/461048a Full Text | PDF (935K) Nitrogen cycle: Oceans apart p49 Reactive nitrogen is lost from the oceans as dinitrogen — N2 — produced by microbial metabolism. The latest twist in an ongoing story is that different pathways dominate in two of the oceanic regions concerned. Maren Voss & Joseph P. Montoya doi:10.1038/461049a Full Text | PDF (1,402K) See also: Editor’s summary Neuroscience: Persistent feedback p50 How does the brain remember the consequences of our actions? Persistent activity in the prefrontal cortex and basal ganglia may be crucial for learning correct actions through experience. Hyojung Seo & Daeyeol Lee doi:10.1038/461050a Full Text | PDF (2,236K) Correction p51 doi:10.1038/461051a Full Text | PDF (1,759K) ReviewEarlywarning signals for critical transitions p53 Marten Scheffer, Jordi Bascompte, William A. Brock, Victor Brovkin, Stephen R. Carpenter, Vasilis Dakos, Hermann Held, Egbert H. van Nes, Max Rietkerk & George Sugihara doi:10.1038/nature08227 Brief Communications ArisingScaling of BMP gradients in Xenopus embryos pE1 Paul Francois, Alin Vonica, Ali H. Brivanlou & Eric D. Siggia doi:10.1038/nature08305 Reply to Francois et al. pE2 Danny BenZvi, BenZion Shilo, Abraham Fainsod & Naama Barkai doi:10.1038/nature08306 Top of pageArticleStructures of the tRNA export factor in the nuclear and cytosolic states p60 After transcription and processing, transfer RNAs must be exported from the nucleus to the cytoplasm, where translation occurs. This process is mediated by a dedicated nucleocytoplasmic transport factor called Xpot. Here, the structure of Schizosaccharomyces pombe Xpot is reported, unbound and in complex with both tRNA and another factor required for transport, RanGTP. Atlanta G. Cook, Noemi Fukuhara, Martin Jinek & Elena Conti doi:10.1038/nature08394 •PDB code •3IBV •3ICQ •3D view •3IBV •3ICQ LettersThe remnants of galaxy formation from a panoramic survey of the region around M31 p66 In hierarchical cosmological models, galaxies grow in mass through the continual accretion of smaller ones. The tidal disruption of these systems is expected to result in loosely bound and distant stars surrounding the galaxy. A panoramic survey of the Andromeda galaxy (M31) now reveals stars and coherent structures that are almost certainly remnants of dwarf galaxies destroyed by the tidal field of M31. Alan W. McConnachie, Michael J. Irwin, Rodrigo A. Ibata, John Dubinski, Lawrence M. Widrow, Nicolas F. Martin, Patrick Côté, Aaron L. Dotter, Julio F. Navarro, Annette M. N. Ferguson, Thomas H. Puzia, Geraint F. Lewis, Arif Babul, Pauline Barmby, Olivier Bienaymé, Scott C. Chapman, Robert Cockcroft, Michelle L. M. Collins, Mark A. Fardal, William E. Harris, Avon Huxor, A. Dougal Mackey, Jorge Peñarrubia, R. Michael Rich, Harvey B. Richer, Arnaud Siebert, Nial Tanvir, David VallsGabaud & Kimberly A. Venn doi:10.1038/nature08327 Laser cooling by collisional redistribution of radiation p70 Collisional redistribution of radiation has been proposed as a cooling mechanism for atomic twolevel systems. Here, a proofofprinciple demonstration is reported in which a relative cooling of 66 K is achieved in an ultradense vapour of rubidium atoms and argon buffer gas. This technique may facilitate fundamental studies of supercooling and have applications in optical refrigeration. Ulrich Vogl & Martin Weitz doi:10.1038/nature08203 From molecular to macroscopic via the rational design of a selfassembled 3D DNA crystal p74 Although we live in a macroscopic threedimensional (3D) world, our best description of the structure of matter is at the atomic and molecular scale. Reconciling these two scales with atomic precision requires high spatial control of the 3D structure of matter, with the simplest practical route to achieving this being to form a crystalline arrangement by selfassembly. Here, the crystal structure of a designed, selfassembled 3D crystal based on the DNA tensegrity triangle is reported. Jianping Zheng, Jens J. Birktoft, Yi Chen, Tong Wang, Ruojie Sha, Pamela E. Constantinou, Stephan L. Ginell, Chengde Mao & Nadrian C. Seeman doi:10.1038/nature08274 •PDB code •3GBI •3D view •3GBI Denitrification as the dominant nitrogen loss process in the Arabian Sea p78 Fixed nitrogen availability limits primary production in over half of the world’s oceans. Oceanic oxygen minimum zones (OMZs) are responsible for about 35% of oceanic dinitrogen gas (N2) production and up to half of that occurs in the Arabian Sea. It has recently been argued that anaerobic ammonia oxidation (anammox) alone is responsible for fixed nitrogen loss in the OMZs; however, here it is shown that denitrification rather than anammox dominates the N2 loss term in the Arabian 下载地址： http://d.namipan.com/d/0062f3bc1 ... 1ca49ab34039a28ae00 [ Last edited by chy6163 on 2009-9-14 at 17:17 ] |
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