Extreme damping in composite materials with negative-stiffness inclusions.

abstract：:Considerable evidence points to a role for G1 cyclin-dependent kinase (CDK) in allowing the accumulation of E2F transcription factor activity and induction of the S phase of the cell cycle. Numerous experiments have also demonstrated a critical role for both Myc and Ras activities in allowing cell-cycle progression. H...

journal_title：Nature

authors： Leone G,DeGregori J,Sears R,Jakoi L,Nevins JR

更新日期：1997-05-22 00:00:00

abstract：:In Parkinson's disease, brain dopamine neurons degenerate most prominently in the substantia nigra. Neurotrophic factors promote survival, differentiation and maintenance of neurons in developing and adult vertebrate nervous system. The most potent neurotrophic factor for dopamine neurons described so far is the glial...

journal_title：Nature

authors： Lindholm P,Voutilainen MH,Laurén J,Peränen J,Leppänen VM,Andressoo JO,Lindahl M,Janhunen S,Kalkkinen N,Timmusk T,Tuominen RK,Saarma M

更新日期：2007-07-05 00:00:00

abstract：:The ability to form integrated circuits on flexible sheets of plastic enables attributes (for example conformal and flexible formats and lightweight and shock resistant construction) in electronic devices that are difficult or impossible to achieve with technologies that use semiconductor wafers or glass plates as sub...

journal_title：Nature

authors： Cao Q,Kim HS,Pimparkar N,Kulkarni JP,Wang C,Shim M,Roy K,Alam MA,Rogers JA

更新日期：2008-07-24 00:00:00

abstract：:The highly conserved protein gamma-tubulin is required for microtubule nucleation in vivo. When viewed in the electron microscope, a highly purified gamma-tubulin complex from Xenopus consisting of at least seven different proteins is seen to have an open ring structure. This complex acts as an active microtubule-nucl...

journal_title：Nature

authors： Zheng Y,Wong ML,Alberts B,Mitchison T

更新日期：1995-12-07 00:00:00

abstract：:The enkephalins Met-enkephalin and Leu-enkephalin were first isolated from porcine brain by Hughes and co-workers. We have recently isolated from bovine adrenals another enkephalin with the structure Tyr-Gly-Gly-Phe-Met-Arg-Phe, or Met-enkephalin-Arg6-Phe7 (ref. 2). We report here that this new heptapeptide is found i...

journal_title：Nature

authors： Rossier J,Audigier Y,Ling N,Cros J,Udenfriend S

更新日期：1980-11-06 00:00:00

abstract：:The germ-cell lineage ensures the continuity of life through the generation of male and female gametes, which unite to form a totipotent zygote. We have previously demonstrated that, by using cytokines, embryonic stem cells and induced pluripotent stem cells can be induced into epiblast-like cells (EpiLCs) and then in...

journal_title：Nature

authors： Nakaki F,Hayashi K,Ohta H,Kurimoto K,Yabuta Y,Saitou M

更新日期：2013-09-12 00:00:00

abstract：:The rod and cone transducins are specific G proteins originally thought to be present only in photoreceptor cells of the vertebrate retina. Transducins convert light stimulation of photoreceptor opsins into activation of cyclic GMP phosphodiesterase (reviewed in refs. 5-7). A transducin-like G protein, gustducin, has ...

journal_title：Nature

authors： Ruiz-Avila L,McLaughlin SK,Wildman D,McKinnon PJ,Robichon A,Spickofsky N,Margolskee RF

更新日期：1995-07-06 00:00:00

abstract：:The growth of blood vessels (a process known as angiogenesis) is essential for organ growth and repair. An imbalance in this process contributes to numerous malignant, inflammatory, ischaemic, infectious and immune disorders. Recently, the first anti-angiogenic agents have been approved for the treatment of cancer and...

journal_title：Nature

authors： Carmeliet P

更新日期：2005-12-15 00:00:00

abstract：:The Gulf Stream transports approximately 31 Sv (1 Sv = 10(6) m(3) s(-1)) of water and 1.3 x 10(15) W of heat into the North Atlantic ocean. The possibility of abrupt changes in Gulf Stream heat transport is one of the key uncertainties in predictions of climate change for the coming centuries. Given the limited length...

journal_title：Nature

authors： Lund DC,Lynch-Stieglitz J,Curry WB

更新日期：2006-11-30 00:00:00

abstract：:Although many animals use the Earth's magnetic field for orientation and navigation, the precise biophysical mechanisms underlying magnetic sensing have been elusive. One theoretical model proposes that geomagnetic fields are perceived by chemical reactions involving specialized photoreceptors. However, the specific p...

journal_title：Nature

authors： Gegear RJ,Casselman A,Waddell S,Reppert SM

更新日期：2008-08-21 00:00:00

abstract：:Zika virus (ZIKV) is a flavivirus that is responsible for the current epidemic in Brazil and the Americas. ZIKV has been causally associated with fetal microcephaly, intrauterine growth restriction, and other birth defects in both humans and mice. The rapid development of a safe and effective ZIKV vaccine is a global ...

journal_title：Nature

authors： Larocca RA,Abbink P,Peron JP,Zanotto PM,Iampietro MJ,Badamchi-Zadeh A,Boyd M,Ng'ang'a D,Kirilova M,Nityanandam R,Mercado NB,Li Z,Moseley ET,Bricault CA,Borducchi EN,Giglio PB,Jetton D,Neubauer G,Nkolola JP,Maxfield

更新日期：2016-08-25 00:00:00

abstract：:It is thought that neutron stars in low-mass binary systems can accrete matter and angular momentum from the companion star and be spun-up to millisecond rotational periods. During the accretion stage, the system is called a low-mass X-ray binary, and bright X-ray emission is observed. When the rate of mass transfer d...

journal_title：Nature

authors： Papitto A,Ferrigno C,Bozzo E,Rea N,Pavan L,Burderi L,Burgay M,Campana S,Di Salvo T,Falanga M,Filipović MD,Freire PC,Hessels JW,Possenti A,Ransom SM,Riggio A,Romano P,Sarkissian JM,Stairs IH,Stella L,Torres DF,Wi

更新日期：2013-09-26 00:00:00

abstract：:The dispute among federal agencies over regulation of commercial biotechnology has been addressed in the Federal Register by the Office of Science and Technology Policy (OSTP), which says the Recombinant DNA Advisory Committee of the National Institutes of Health should continue to oversee biomedical research in this ...

journal_title：Nature

authors： Beardsley T

更新日期：1985-01-10 00:00:00

abstract：:Cyclosporin A (CSA) is a fungal metabolite which exerts profound effects on the immune system and has potential as a selective immuno-suppressive agent. Clinical trials with human renal allograft recipients have confirmed this potential but there have been disturbing reports of lymphoma in a significant number of pati...

journal_title：Nature

authors： Bird AG,McLachlan SM,Britton S

更新日期：1981-01-22 00:00:00

abstract：:Magma intrusions and eruptions commonly produce abrupt changes in seismicity far from magma conduits that cannot be associated with the diffusion of pore fluids or heat. Such 'swarm' seismicity also migrates with time, and often exhibits a 'dog-bone'-shaped distribution. The largest earthquakes in swarms produce after...

journal_title：Nature

authors： Toda S,Stein RS,Sagiya T

更新日期：2002-09-05 00:00:00

abstract：:Four-residue beta-turns and larger loop structures represent a significant fraction of globular protein surfaces and play an important role in determining the conformation and specificity of enzyme active sites and antibody-combining sites. Turns are an attractive starting point to develop protein design methods, as t...

journal_title：Nature

authors： Hynes TR,Kautz RA,Goodman MA,Gill JF,Fox RO

更新日期：1989-05-04 00:00:00

abstract：:Transition-metal perovskite oxides exhibit a wide range of extraordinary but imperfectly understood phenomena. The best known examples are high-temperature superconductivity in copper oxides, and colossal magnetoresistance in manganese oxides ('manganites'). All of these materials undergo a range of order-disorder tra...

journal_title：Nature

authors： Renner Ch,Aeppli G,Kim BG,Soh YA,Cheong SW

更新日期：2002-04-04 00:00:00

abstract：:Visual transduction in vertebrate photoreceptors is thought to involve a diffusible internal transmitter which links photon absorption in disk membranes to the conductance decrease in the plasma membrane of the outer segment. The desensitisation of the photoresponse which occurs during and after illumination may also ...

journal_title：Nature

authors： McNaughton PA,Yau KW,Lamb TD

更新日期：1980-01-03 00:00:00

abstract：:The protein TFIIB is a general transcription initiation factor that interacts with a promoter complex (D.DNA) containing the TATA-binding subunit (TFIID tau, or TBP) of TFIID to facilitate subsequent interaction with RNA polymerase II (ref. 2) through the associated TFIIF (ref. 3). The potential bridging function of T...

journal_title：Nature

authors： Hisatake K,Roeder RG,Horikoshi M

更新日期：1993-06-24 00:00:00

abstract：:The cyc- variants of S49 lymphoma cells have served as powerful tools for studying the components and mechanisms of hormone-induced adenylate cyclase stimulation, as these cells are deficient in the guanine nucleotide regulatory site (Ns) mediating hormone, guanine nucleotide, cholera toxin and fluoride-induced stimul...

journal_title：Nature

authors： Jakobs KH,Aktories K,Schultz G

更新日期：1983-05-12 00:00:00

abstract：:Brood parasitism, where a brood of the parasitic species is fostered by the parents of another species, is well known among birds. In most cases, such offspring show a complete reliance upon their host parents for food, protection and warmth until their independence. In other vertebrate groups, however, such total dep...

journal_title：Nature

authors： Sato T

更新日期：1986-09-04 00:00:00

abstract：:One of the most exciting events in recent years in molecular biology was the discovery of the left-handed Z form of the DNA double helix. Originally found in linear self-complementary d(GC)x . d(GC)x polymers and oligomers in non-physiological conditions (a rather high salt concentration), it was recently shown to be ...

journal_title：Nature

authors： Frank-Kamenetskii MD,Vologodskii AV

更新日期：1984-02-02 00:00:00

abstract：:A set of restriction fragments cloned into phage lambda vectors has allowed us to locate a site necessary for full rpoBC expression. We find that these genes for the two large subunits of RNA polymerase and the genes, rplL and rplJ, for two ribosomal proteins, form a single operon. ...

journal_title：Nature

authors： Linn T,Scaife J

更新日期：1978-11-02 00:00:00

abstract：:Genome instability is central to ageing, cancer and other diseases. It is not only proteins involved in DNA replication or the DNA damage response (DDR) that are important for maintaining genome integrity: from yeast to higher eukaryotes, mutations in genes involved in pre-mRNA splicing and in the biogenesis and expor...

journal_title：Nature

authors： Bhatia V,Barroso SI,García-Rubio ML,Tumini E,Herrera-Moyano E,Aguilera A

更新日期：2014-07-17 00:00:00

abstract：:THE cause of extinction of the woolly mammoth, Mammuthus primigenius (Blumenbach), is still debated. A major environmental change at the Pleistocene-Holocene boundary, hunting by early man, or both together are among the main explanations that have been suggested. But hardly anyone has doubted that mammoths had become...

journal_title：Nature

authors： Vartanyan SL,Garutt VE,Sher AV

更新日期：1993-03-25 00:00:00

abstract：:The repressor of phage 434 binds to six operator sites on the phage chromosome. A comparison of the sequences of these 14-base-pair (bp) operator sites reveals a striking pattern: at five of the six sites, the symmetrically arrayed outer eight base pairs (four in each half-site) are identical and the remaining site di...

journal_title：Nature

authors： Koudelka GB,Harrison SC,Ptashne M

更新日期：1987-04-30 00:00:00

abstract：:The human alpha-interferon (IFN-alpha) gene family consists of at least 14 potentially functional non-allelic members; the amino acid sequences they encode differ from each other by up to approximately 20% of their residues. Human IFN-beta, which is encoded by a single gene, is distantly related to the IFN-alpha famil...

journal_title：Nature

authors： Valenzuela D,Weber H,Weissmann C

更新日期：1985-02-21 00:00:00

abstract：:Dysfunction in prosocial interactions is a core symptom of autism spectrum disorder. However, the neural mechanisms that underlie sociability are poorly understood, limiting the rational development of therapies to treat social deficits. Here we show in mice that bidirectional modulation of the release of serotonin (5...

journal_title：Nature

authors： Walsh JJ,Christoffel DJ,Heifets BD,Ben-Dor GA,Selimbeyoglu A,Hung LW,Deisseroth K,Malenka RC

更新日期：2018-08-01 00:00:00

abstract：:Optical structures with periodic variations of the dielectric constant in one or more directions (photonic crystals) have been employed extensively for studying optical diffraction phenomena. Practical interest in such structures arises from the possibilities they offer for tailoring photon modes, and thereby the char...

journal_title：Nature

authors： Pier H,Kapon E,Moser M

更新日期：2000-10-19 00:00:00

abstract：:The coronavirus disease 2019 (COVID-19) pandemic, which is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been associated with more than 780,000 deaths worldwide (as of 20 August 2020). To develop antiviral interventions quickly, drugs used for the treatment of unrelated diseases are curre...

journal_title：Nature

authors： Hoffmann M,Mösbauer K,Hofmann-Winkler H,Kaul A,Kleine-Weber H,Krüger N,Gassen NC,Müller MA,Drosten C,Pöhlmann S

更新日期：2020-09-01 00:00:00