Partitioning phase preference for secondary organic aerosol in an urban atmosphere.

abstract：:The growth or decay of population of a single species interacting with a large number of other species (or environment) according to the Volterra-Lotka model is investigated. When the environment is initially very close to its equilibrium level, the growth of a single species follows a generalized Verhulst law, contai...

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

authors： Zwanzig R

更新日期：1973-11-01 00:00:00

abstract：:A mammalian A-type cyclin, cyclin A1, is highly expressed in testes of both human and mouse and targeted mutagenesis in the mouse has revealed the unique requirement for cyclin A1 in the progression of male germ cells through the meiotic cell cycle. While very low levels of cyclin A1 have been reported in the human he...

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

authors： Liao C,Wang XY,Wei HQ,Li SQ,Merghoub T,Pandolfi PP,Wolgemuth DJ

更新日期：2001-06-05 00:00:00

abstract：:Recombinant baculovirus-derived interleukin 6 (IL-6) disrupts the attachment of human ductal breast carcinoma subline ZR-75-1-Tx cells to neighbors and the substratum in culture without inhibiting the proliferation of the cells. The nonadherent cells lack pseudopodia and do not translocate directionally. These finding...

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

authors： Tamm I,Kikuchi T,Cardinale I,Krueger JG

更新日期：1994-04-12 00:00:00

abstract：:The Pleistocene global dispersal of modern humans required the transit of arid and semiarid regions where the distribution of potable water provided a primary constraint on dispersal pathways. Here, we provide a spatially explicit continental-scale assessment of the opportunities for Pleistocene human occupation of Au...

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

authors： Bird MI,O'Grady D,Ulm S

更新日期：2016-10-11 00:00:00

abstract：:Alzheimer's disease (AD) is characterized by a progressive dysfunction of central neurons. Recent experimental evidence indicates that in the cortex, in addition to the silencing of a fraction of neurons, other neurons are hyperactive in amyloid-β (Aβ) plaque-enriched regions. However, it has remained unknown what com...

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

authors： Busche MA,Chen X,Henning HA,Reichwald J,Staufenbiel M,Sakmann B,Konnerth A

更新日期：2012-05-29 00:00:00

abstract：:The identification of genes contributing to the adaptation of local populations is of great biological interest. In an attempt to characterize functionally important differences among African and non-African Drosophila melanogaster populations, we surveyed neutral microsatellite variation in an 850-kb genomic sequence...

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

authors： Harr B,Kauer M,Schlötterer C

更新日期：2002-10-01 00:00:00

abstract：:The sphinganine analog mycotoxin, AAL-toxin, induces a death process in plant and animal cells that shows apoptotic morphology. In nature, the AAL-toxin is the primary determinant of the Alternaria stem canker disease of tomato, thus linking apoptosis to this disease caused by Alternaria alternata f. sp. lycopersici. ...

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

authors： Lincoln JE,Richael C,Overduin B,Smith K,Bostock R,Gilchrist DG

更新日期：2002-11-12 00:00:00

abstract：:Fast lateral proton migration along membranes is of vital importance for cellular energy homeostasis and various proton-coupled transport processes. It can only occur if attractive forces keep the proton at the interface. How to reconcile this high affinity to the membrane surface with high proton mobility is unclear....

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

authors： Zhang C,Knyazev DG,Vereshaga YA,Ippoliti E,Nguyen TH,Carloni P,Pohl P

更新日期：2012-06-19 00:00:00

abstract：:An effective plant alkaloid chemical defense requires a variety of transport processes, but few alkaloid transporters have been characterized at the molecular level. Previously, a gene fragment encoding a putative plasma membrane proton symporter was isolated, because it was coordinately regulated with several nicotin...

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

authors： Hildreth SB,Gehman EA,Yang H,Lu RH,Ritesh KC,Harich KC,Yu S,Lin J,Sandoe JL,Okumoto S,Murphy AS,Jelesko JG

更新日期：2011-11-01 00:00:00

abstract：:Incubation of chicken embryo fibroblasts with mitogenic concentrations of insulin for 24 hr or with the tumor promoter phorbol 12-myristate 13-acetate for 6 hr stimulated lactate release and 3-O-methylglucose uptake. Insulin also increased the Vmax of 6-phosphofructo-1-kinase (ATP:D-fructose-6-phosphate 1-phosphotrans...

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

authors： Bosca L,Rousseau GG,Hue L

更新日期：1985-10-01 00:00:00

abstract：:The energetics of the TiO(2) polymorphs (rutile, anatase, and brookite) were studied by high temperature oxide melt drop solution calorimetry. Relative to bulk rutile, bulk brookite is 0.71 +/- 0.38 kJ/mol (6) and bulk anatase is 2.61 +/- 0.41 kJ/mol higher in enthalpy. The surface enthalpies of rutile, brookite, and ...

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

authors： Ranade MR,Navrotsky A,Zhang HZ,Banfield JF,Elder SH,Zaban A,Borse PH,Kulkarni SK,Doran GS,Whitfield HJ

更新日期：2002-04-30 00:00:00

abstract：:Peripheral nerve injury induces a robust proregenerative program that drives axon regeneration. While many regeneration-associated genes are known, the mechanisms by which injury activates them are less well-understood. To identify such mechanisms, we performed a loss-of-function pharmacological screen in cultured adu...

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

authors： Karney-Grobe S,Russo A,Frey E,Milbrandt J,DiAntonio A

更新日期：2018-10-16 00:00:00

abstract：:Eukaryotic translation initiation factor (eIF) 5 is crucial for the assembly of the eukaryotic preinitiation complex. This activity is mediated by the ability of its C-terminal HEAT domain to interact with eIF1, eIF2, and eIF3 in the multifactor complex and with eIF4G in the 48S complex. However, the binding sites for...

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

authors： Yamamoto Y,Singh CR,Marintchev A,Hall NS,Hannig EM,Wagner G,Asano K

更新日期：2005-11-08 00:00:00

abstract：:Particular major histocompatibility complex (MHC) class II alleles clearly contribute to T cell-mediated autoimmune type 1 diabetes (T1D) in both humans and nonobese diabetic (NOD) mice. However, studies in NOD mice indicate MHC class I-restricted T cell responses are also essential to T1D development. In humans, epid...

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

authors： Marron MP,Graser RT,Chapman HD,Serreze DV

更新日期：2002-10-15 00:00:00

abstract：:Controlling the effects of proactive interference (PI), the deleterious effect of prior mental activity on current memory representations, is believed to be a key function of the prefrontal cortex. This view is supported by neuroimaging evidence for a correlation between the longer reaction times caused by high PI con...

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

authors： Feredoes E,Tononi G,Postle BR

更新日期：2006-12-19 00:00:00

abstract：:We recently reported that CD3- natural killer (NK) cells express the zeta chain of the T-cell receptor complex (zeta NK) in association with higher molecular weight structures whose expression differs between individual NK cell clones. Because NK cell cytolytic activity is known to be triggered by perturbation of the ...

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

authors： Anderson P,Caligiuri M,O'Brien C,Manley T,Ritz J,Schlossman SF

更新日期：1990-03-01 00:00:00

abstract：:The sudden appearance of calcified skeletons among many different invertebrate taxa at the Precambrian-Cambrian transition may have required minor reorganization of preexisting secretory functions. In particular, features of the skeletal organic matrix responsible for regulating crystal growth by inhibition may be der...

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

authors： Marin F,Smith M,Isa Y,Muyzer G,Westbroek P

更新日期：1996-02-20 00:00:00

abstract：:X-linked dystonia-parkinsonism (XDP) is a neurodegenerative disease associated with an antisense insertion of a SINE-VNTR-Alu (SVA)-type retrotransposon within an intron of TAF1 This unique insertion coincides with six additional noncoding sequence changes in TAF1, the gene that encodes TATA-binding protein-associated...

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

authors： Bragg DC,Mangkalaphiban K,Vaine CA,Kulkarni NJ,Shin D,Yadav R,Dhakal J,Ton ML,Cheng A,Russo CT,Ang M,Acuña P,Go C,Franceour TN,Multhaupt-Buell T,Ito N,Müller U,Hendriks WT,Breakefield XO,Sharma N,Ozelius LJ

更新日期：2017-12-19 00:00:00

abstract：:Of the four major types of Ca channel described in vertebrate cells (designated T, L, N, and P), N-type Ca channels are unique in that they are found specifically in neurons, have been correlated with control of neurotransmitter release, and are blocked by omega-conotoxin, a neuropeptide toxin isolated from the marine...

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

authors： Dubel SJ,Starr TV,Hell J,Ahlijanian MK,Enyeart JJ,Catterall WA,Snutch TP

更新日期：1992-06-01 00:00:00

abstract：:Of nine established murine haplotypes, mice of three types (H-2d, H-2u, and H-2q) possess major histocompatibility complex class I glycoproteins able to present an identical viral peptide for recognition and lysis by virus-specific cytotoxic T lymphocytes. Incorporation of this viral epitope into a recombinant vaccini...

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

authors： Oldstone MB,Tishon A,Geckeler R,Lewicki H,Whitton JL

更新日期：1992-04-01 00:00:00

abstract：:In making sense of the visual world, the brain's processing is driven by two factors: the physical information provided by the eyes ("bottom-up" data) and the expectancies driven by past experience ("top-down" influences). We use degraded stimuli to tease apart the effects of bottom-up and top-down processes because t...

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

authors： Gorlin S,Meng M,Sharma J,Sugihara H,Sur M,Sinha P

更新日期：2012-05-15 00:00:00

abstract：:Mature immunologically competent dendritic cells are the most efficient antigen-presenting cells that powerfully activate T cells and initiate and sustain immune responses. Indeed, dendritic cells are able to efficiently capture antigens, express high levels of costimulatory molecules, and produce the combination of c...

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

authors： Quaratino S,Duddy LP,Londei M

更新日期：2000-09-26 00:00:00

abstract：:URF13 is a mitochondrially encoded, integral membrane protein found only in maize carrying the cms-T cytoplasm. URF13 is associated with cytoplasmic male sterility, Texas type, and causes susceptibility to the fungal pathogens Bipolaris maydis race T and Phyllosticta maydis. URF13 is predicted to contain three transme...

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

authors： Rhoads DM,Kaspi CI,Levings CS 3rd,Siedow JN

更新日期：1994-08-16 00:00:00

abstract：:The rate of change of climate codetermines the global warming impacts on natural and socioeconomic systems and their capabilities to adapt. Establishing past rates of climate change from temperature proxy data remains difficult given their limited spatiotemporal resolution. In contrast, past greenhouse gas radiative f...

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

authors： Joos F,Spahni R

更新日期：2008-02-05 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：:CCR5 encodes a cell surface chemokine receptor molecule that serves as the principal coreceptor, with CD4, for HIV-type 1 (HIV-1). Varied HIV-1 susceptibility and time to progression to AIDS have been associated with polymorphisms in CCR5. Many of these polymorphisms are located in the 5' cis-regulatory region of CCR5...

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

authors： Bamshad MJ,Mummidi S,Gonzalez E,Ahuja SS,Dunn DM,Watkins WS,Wooding S,Stone AC,Jorde LB,Weiss RB,Ahuja SK

更新日期：2002-08-06 00:00:00

abstract：:We previously reported that laminar flow activates peroxisome proliferator-activated receptor gamma (PPARgamma) in vascular endothelial cells in a ligand-dependent manner that involves phospholipase A2 and cytochrome P450 epoxygenases. In this study, we investigated whether epoxyeicosatrienoic acids (EETs), the cataly...

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

authors： Liu Y,Zhang Y,Schmelzer K,Lee TS,Fang X,Zhu Y,Spector AA,Gill S,Morisseau C,Hammock BD,Shyy JY

更新日期：2005-11-15 00:00:00

abstract：:By the use of a rapid radioautographic screening procedure, two mutants of Bacillus brevis ATCC 8185 that have lost the ability to produce gramicidin have been isolated. These mutants produced normal levels of tyrocidine and sporulated at the same frequency as the parent strain. Their spores, however, were more heat-s...

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

authors： Mukherjee PK,Paulus H

更新日期：1977-02-01 00:00:00

abstract：:Grasslands cover more than 20% of the Earth's terrestrial surface, and their rise to dominance is one of the most dramatic events of biome evolution in Earth history. Grasses possess two main photosynthetic pathways: the C(3) pathway that is typical of most plants and a specialized C(4) pathway that minimizes photores...

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

authors： Edwards EJ,Smith SA

更新日期：2010-02-09 00:00:00

abstract：:Plasmids containing the replication origin of the Escherichia coli chromosome (oriC plasmids) are unstable in certain recA strains of E. coli. However, they can be maintained more stably in other recA strains. This stable maintenance has allowed us to study the incompatibility properties of oriC plasmids. We have foun...

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

authors： Yamaguchi K,Yamaguchi M,Tomizawa J

更新日期：1982-09-01 00:00:00