Transverse fields to tune an Ising-nematic quantum phase transition.

abstract：:Atmospheric oxidation of natural and anthropogenic volatile organic compounds (VOCs) leads to secondary organic aerosol (SOA), which constitutes a major and often dominant component of atmospheric fine particulate matter (PM2.5). Recent work demonstrates that rapid autoxidation of organic peroxy radicals (RO2) formed ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pye HOT,D'Ambro EL,Lee BH,Schobesberger S,Takeuchi M,Zhao Y,Lopez-Hilfiker F,Liu J,Shilling JE,Xing J,Mathur R,Middlebrook AM,Liao J,Welti A,Graus M,Warneke C,de Gouw JA,Holloway JS,Ryerson TB,Pollack IB,Thornton

更新日期：2019-04-02 00:00:00

abstract：:The bactericidal effects of antibiotics are undoubtedly triggered by target-specific interactions, but there is growing evidence that an important aspect of cytotoxicity results from treatment-induced metabolic perturbations. In this study, we characterized molecular mechanisms whereby trimethoprim treatment results i...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Giroux X,Su WL,Bredeche MF,Matic I

更新日期：2017-10-24 00:00:00

abstract：:The dynamic responses of the hearing organ to acoustic overstimulation were investigated using the guinea pig isolated temporal bone preparation. The organ was loaded with the fluorescent Ca2+ indicator Fluo-3, and the cochlear electric responses to low-level tones were recorded through a microelectrode in the scala m...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Fridberger A,Flock A,Ulfendahl M,Flock B

更新日期：1998-06-09 00:00:00

abstract：:Circulating peripheral blood cells and disaggregated yolk sac cells were obtained from normal mouse embryos as early as day 9 of gestation, prior to the formation of the fetal liver. These were cultured in vitro in plasma clots or methylcellulose, in the presence of either embryonic fluid or adult spleen cell-conditio...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Wong PM,Clarke BJ,Carr DH,Chui DH

更新日期：1982-05-01 00:00:00

abstract：:A biological membrane is conceptualized as a system in which membrane proteins are naturally matched to the equilibrium thickness of the lipid bilayer. Cholesterol, in addition to lipid composition, has been suggested to be a major regulator of bilayer thickness in vivo because measurements in vitro have shown that ch...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Mitra K,Ubarretxena-Belandia I,Taguchi T,Warren G,Engelman DM

更新日期：2004-03-23 00:00:00

abstract：:The crystal structure of the decanucleotide d(CGCAATTGCG)2 has been solved by a combination of molecular replacement and heavy-atom procedures and has been refined to an R factor of 20.2% at 2.7 A. It is not a fully base-paired duplex but has a central core of eight Watson-Crick base pairs flanked by unpaired terminal...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Spink N,Nunn CM,Vojtechovsky J,Berman HM,Neidle S

更新日期：1995-11-07 00:00:00

abstract：:Chronic, relapsing myelitis has been induced in golden Syrian hamsters by the intracerebral inoculation of measles virus when the animals were less than 1 day old. No acute illness was seen in animals that developed myelitis, and the onset of the myelitis was at 5 to 50 weeks after infection. In most animals the illne...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Carrigan DR,Johnson KP

更新日期：1980-07-01 00:00:00

abstract：:To investigate the contribution of interleukin-4 (IL-4) to airway inflammation in vivo and to explore directly its relationship to airway reactivity, we created transgenic mice in which the murine cDNA for IL-4 was regulated by the rat Clara cell 10 protein promoter. Expression was detected only in the lung and not in...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Rankin JA,Picarella DE,Geba GP,Temann UA,Prasad B,DiCosmo B,Tarallo A,Stripp B,Whitsett J,Flavell RA

更新日期：1996-07-23 00:00:00

abstract：:Antibiotic resistance in bacteria has emerged as a global challenge over the past 90 years, compromising our ability to effectively treat infections. There has been a dramatic increase in antibiotic resistance-associated determinants in bacterial populations, driven by the mobility and infectious nature of such determ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Klemm EJ,Wong VK,Dougan G

更新日期：2018-12-18 00:00:00

abstract：:Stimulated human monocytes release several proteins thought to play a role in inflammation, including interleukin 1, tumor necrosis factor, and plasminogen activator. We have purified another proinflammatory protein that is chemotactic for human neutrophils from conditioned medium of lipopolysaccharide-stimulated mono...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yoshimura T,Matsushima K,Tanaka S,Robinson EA,Appella E,Oppenheim JJ,Leonard EJ

更新日期：1987-12-01 00:00:00

abstract：:The identity of cells that mediate positive selection of CD8(+) T cells was investigated in two T cell receptor (TCR) transgenic systems. Irradiated beta(2)-microglobulin mutant mice or mice with mutations in both the K(b) and D(b) genes were repopulated with fetal liver cells from class I(+) TCR transgenic mice. In t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Zerrahn J,Volkmann A,Coles MC,Held W,Lemonnier FA,Raulet DH

更新日期：1999-09-28 00:00:00

abstract：:The N-methyl-D-aspartate (NMDA) receptor, a subtype of excitatory amino acid receptor, mediates synaptic responses in many regions of the central nervous system. This receptor plays a critical role in the mechanisms of both synaptic plasticity and excitotoxicity. Although these receptors were generally thought to be a...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Monaghan DT,Olverman HJ,Nguyen L,Watkins JC,Cotman CW

更新日期：1988-12-01 00:00:00

abstract：:Glutaredoxins (GRXs), also known as thioltransferases, use glutathione as a cofactor for reduction of disulfides in prokaryotes and eukaryotes. We demonstrate that the vaccinia virus O2L open reading frame encodes a functional GRX, as predicted by Johnson et al. [Johnson, G. P., Goebel, S. J., Perkus, M. E., Davis, S....

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ahn BY,Moss B

更新日期：1992-08-01 00:00:00

abstract：:We studied mutants of E. coli originally identified as being deficient in either endonuclease II (deoxyribonucleate oligonucleotidohydrolase, EC 3.1.4.30) or exonuclease III [deoxyribonucleate (double-stranded) 5'-nucleotidohydrolase, EC 3.1.4.27] activity. Twelve independently derived mutants were tested, including t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Yajko DM,Weiss B

更新日期：1975-02-01 00:00:00

abstract：:To elucidate the function of the two nerve growth factor (NGF) receptors, p75NGFR and p140trk, chimeric molecules were constructed of tumor necrosis factor (TNF) and NGF receptors. Rat PC12 pheochromocytoma cells transiently transfected with TNF-p140trk chimeras, which contain the extracellular domain of TNF receptor ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Rovelli G,Heller RA,Canossa M,Shooter EM

更新日期：1993-09-15 00:00:00

abstract：:The up-regulation of the 25-hydroxyvitamin D(3)-24-hydroxylase by 1,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)] is well established and occurs at the transcriptional level through two vitamin D response elements in the promoter of the gene. However, the mechanism of down-regulation of the 24-hydroxylase by parathyroid ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Zierold C,Mings JA,DeLuca HF

更新日期：2001-11-20 00:00:00

abstract：:Six alternative hypotheses for the phylogenetic origin of Bilateria are evaluated by using complete 18S rRNA gene sequences for 52 taxa. These data suggest that there is little support for three of these hypotheses. Bilateria is not likely to be the sister group of Radiata or Ctenophora, nor is it likely that Bilateri...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Collins AG

更新日期：1998-12-22 00:00:00

abstract：:Animal development is remarkably robust; cell fates are specified with spatial and temporal precision despite physiological and environmental contingencies. Favorable conditions cause Caenorhabditis elegans to develop rapidly through four larval stages (L1-L4) to the reproductive adult. In unfavorable conditions, L2 l...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hammell CM,Karp X,Ambros V

更新日期：2009-11-03 00:00:00

abstract：:How useful can machine learning be in a quantum laboratory? Here we raise the question of the potential of intelligent machines in the context of scientific research. A major motivation for the present work is the unknown reachability of various entanglement classes in quantum experiments. We investigate this question...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Melnikov AA,Poulsen Nautrup H,Krenn M,Dunjko V,Tiersch M,Zeilinger A,Briegel HJ

更新日期：2018-02-06 00:00:00

abstract：:In the traditional Z scheme of photosynthesis the Emerson effects of red drop (decline in yield of photosynthesis in far-red light) and enhancement (of far-red yield by supplementary short-wavelength light) are taken to be evidence for the coupling in series of two photosystems that absorb unsymmetrically in the far-r...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Warner JW,Berry RS

更新日期：1987-06-01 00:00:00

abstract：:Like many physiological ligands, several viruses and toxins enter mammalian cells through receptor-mediated endocytosis. Once internalized, the nucleic acids of several viruses and the toxic subunit of diphtheria toxin gain access to the cytosol of the host cell through an acidic intracellular compartment. In this rep...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Merion M,Schlesinger P,Brooks RM,Moehring JM,Moehring TJ,Sly WS

更新日期：1983-09-01 00:00:00

abstract：:Glucagon-like peptide 1 (GLP-1) is a hormone derived from the preproglucagon molecule and is secreted by intestinal L cells. It is the most potent stimulator of glucose-induced insulin secretion and also suppresses in vivo acid secretion by gastric glands. A cDNA for the GLP-1 receptor was isolated by transient expres...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Thorens B

更新日期：1992-09-15 00:00:00

abstract：:The kappa-selective opioid peptide dynorphin A (DYN) inhibits neuronal adenylate cyclase activity and reduces neuronal voltage-dependent calcium currents. It is not yet known, however, whether the regulation of calcium channel activity is dependent on or independent of the adenylate cyclase/cAMP system. We used the wh...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gross RA,Moises HC,Uhler MD,Macdonald RL

更新日期：1990-09-01 00:00:00

abstract：:Visual transduction in Drosophila is a G protein-coupled phospholipase C-mediated process that leads to depolarization via activation of the transient receptor potential (TRP) calcium channel. Inactivation-no-afterpotential D (INAD) is an adaptor protein containing PDZ domains known to interact with TRP. Immunoprecipi...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Shieh BH,Zhu MY,Lee JK,Kelly IM,Bahiraei F

更新日期：1997-11-11 00:00:00

abstract：:Sal-like 4 (SALL4) is a nuclear factor central to the maintenance of stem cell pluripotency and is a key component in hepatocellular carcinoma, a malignancy with no effective treatment. In cancer cells, SALL4 associates with nucleosome remodeling deacetylase (NuRD) to silence tumor-suppressor genes, such as PTEN. Here...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Liu BH,Jobichen C,Chia CSB,Chan THM,Tang JP,Chung TXY,Li J,Poulsen A,Hung AW,Koh-Stenta X,Tan YS,Verma CS,Tan HK,Wu CS,Li F,Hill J,Joy J,Yang H,Chai L,Sivaraman J,Tenen DG

更新日期：2018-07-24 00:00:00

abstract：:Harvey and Kirsten murine sarcoma viruses each encode a structurally and functionally related 21-kilodalton protein (p21), which is the transforming protein of each virus. Using probes from the 0.9-kilobase (kb) p21-coding region of each virus (called v-Ha-ras and v-Ki-ras, respectively), we have molecularly cloned fr...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Chang EH,Gonda MA,Ellis RW,Scolnick EM,Lowy DR

更新日期：1982-08-01 00:00:00

abstract：:Skeletal and smooth muscle can mutually transdifferentiate, but little molecular insight exists as to how each muscle program may be subverted to the other. The myogenic basic helix-loop-helix transcription factors MyoD and myogenin (Myog) direct the development of skeletal muscle and are thought to be dominant over t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Long X,Creemers EE,Wang DZ,Olson EN,Miano JM

更新日期：2007-10-16 00:00:00

abstract：:It has been proposed that extensive wildfires occurred after the Cretaceous-Tertiary (K-T) impact event. An abundance of soot and pyrosynthetic polycyclic aromatic hydrocarbons (pPAHs) in marine K-T boundary impact rocks (BIRs) have been considered support for this hypothesis. However, nonmarine K-T BIRs, from across ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Belcher CM,Finch P,Collinson ME,Scott AC,Grassineau NV

更新日期：2009-03-17 00:00:00

abstract：:We have constructed and characterized a polyoma virus-based plasmid that is maintained as an autonomously replicating extrachromosomal element (episome) in mouse embryonic stem (ES) cells. Plasmid pMGD20neo contains the polyoma origin of replication harboring a mutated enhancer (PyF101), a modified polyoma early regio...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gassmann M,Donoho G,Berg P

更新日期：1995-02-28 00:00:00

abstract：:The molecular chaperone Hsp90 is a protein folding machine that is conserved from bacteria to man. Human, cytosolic Hsp90 is dedicated to folding of chiefly signal transduction components. The chaperoning mechanism of Hsp90 is controlled by ATP and various cochaperones, but is poorly understood and controversial. Here...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Karagöz GE,Duarte AM,Ippel H,Uetrecht C,Sinnige T,van Rosmalen M,Hausmann J,Heck AJ,Boelens R,Rüdiger SG

更新日期：2011-01-11 00:00:00