Now showing items 603-622 of 53711

    • Ab Initio Theory of Polar Semiconductor Surfaces. I. Methodology and the (22) Reconstructions of GaAs(111) 

      Kaxiras, Efthimios; Bar-Yam, Yaneer; Joannopoulos, John D.; Pandey, K.C. (American Physical Society, 1987)
      A methodology is developed for the theoretical study of the polar surfaces of compound semiconductors. It is based on the calculation of the total energy in the context of density-functional theory in the pseudopotential ...
    • Ab Initio Theory of Polar Semiconductor surfaces. II. (2x2) Reconstructions and Related Phase Transitions of GaAs(1¯1¯1¯) 

      Kaxiras, Efthimios; Bar-Yam, Yaneer; Joannopoulos, John D.; Pandey, K.C. (American Physical Society, 1987)
      The (2×2) reconstructions of GaAs(1¯ 1¯ 1¯) are studied with use of a theoretical approach based on the calculation of the total energy in the context of density-functional theory and the pseudopotential approximation. New ...
    • Ab initiostudies of the phase transitions inK2SeO4 

      Lu, Hsiao-ming; Hardy, J. R. (American Physical Society (APS), 1990)
      An ab initio model is developed for the potentials in ionic molecular solids in which the electron covalency within the molecular ions substantially affects the interionic interactions. By treating the intermolecular and ...
    • Ab initiotight-binding Hamiltonian for transition metal dichalcogenides 

      Fang, Shiang; Kuate Defo, Rodrick; Shirodkar, Sharmila N.; Lieu, Simon; Tritsaris, Georgios; Kaxiras, Efthimios (American Physical Society (APS), 2015)
      We present an accurate ab initio tight-binding Hamiltonian for the transition metal dichalcogenides, MoS2, MoSe2, WS2, WSe2, with a minimal basis (the d orbitals for the metal atoms and p orbitals for the chalcogen atoms) ...
    • Abacavir Alters the Transcription of Inflammatory Cytokines in Virologically Suppressed, HIV-Infected Women 

      MacLeod, Iain James; Rowley, Christopher Francis; Lockman, Shahin; Ogwu, Anthony; Moyo, Sikhulile; van Widenfelt, Erik; Mmalane, Mompati; Makhema, Joseph Moeketsi; Essex, Myron Elmer; Shapiro, Roger L. (International AIDS Society, 2012)
      Background: Abacavir (ABC) may be associated with a small, increased risk of myocardial infarction in HIV-infected adults, possibly related to cytokine-mediated inflammation. Methods: To evaluate the induction of inflammatory ...
    • The Abbé Jean Meslier and Diderot's "Eleuthéromanes" 

      Dieckmann, Herbert (Harvard Library, 1953)
    • Abbreviated text input 

      Shieber, Stuart; Baker, Ellie (Association for Computing Machinery, 2003)
      We address the problem of improving the efficiency of natural language text input under degraded conditions (for instance, on PDAs or cell phones or by disabled users) by taking advantage of the informational redundacy in ...
    • Abbreviated text input using language modeling. 

      Shieber, Stuart; Nelken, Rani (Cambridge University Press, 2007)
      We address the problem of improving the efficiency of natural language text input under degraded conditions (for instance, on mobile computing devices or by disabled users), by taking advantage of the informational redundancy ...
    • An ABC Transporter Is Required for Secretion of Peptide Sex Pheromones in Enterococcus faecalis 

      Varahan, Sriram; Harms, Nathan; Gilmore, Michael S.; Tomich, John M.; Hancock, Lynn E. (American Society of Microbiology, 2014)
      ABSTRACT Enterococci are leading causes of hospital-acquired infection in the United States and continue to develop resistances to new antibiotics. Many Enterococcus faecalis isolates harbor pheromone-responsive plasmids ...
    • The ABC's of Cell Division: Regulation of Peptidoglycan Amidase Activity during Cytokinesis in Escherichia coli 

      Yang, Desiree Choy (2012-09-07)
      The bacterial cell wall, composed of peptidoglycan (PG), is an essential component of the cell envelope. This macromolecular structure fortifies the cell membrane, determines cell shape, and helps prevent osmotic lysis. ...
    • The ABC's of Number Theory 

      Elkies, Noam (Harvard University, 2007)
      The ABC conjecture is a central open problem in modern number theory, connecting results, techniques and questions ranging from elementary number theory and algebra to the arithmetic of elliptic curves to algebraic geometry ...
    • ABCB1 (MDR1) polymorphisms and ovarian cancer progression and survival: A comprehensive analysis from the Ovarian Cancer Association Consortium and The Cancer Genome Atlas 

      Johnatty, Sharon E.; Beesley, Jonathan; Gao, Bo; Chen, Xiaoqing; Lu, Yi; Law, Matthew H.; Henderson, Michelle J.; Russell, Amanda J.; Hedditch, Ellen L.; Emmanuel, Catherine; Fereday, Sian; Webb, Penelope M.; Goode, Ellen L.; Vierkant, Robert A.; Fridley, Brooke L.; Cunningham, Julie M; Fasching, Peter A.; Beckmann, Matthias W.; Ekici, Arif B.; Hogdall, Estrid; Kjaer, Susanne K.; Jensen, Allan; Hogdall, Claus; Brown, Robert; Paul, Jim; Lambrechts, Sandrina; Despierre, Evelyn; Vergote, Ignace; Lester, Jenny; Karlan, Beth Y.; Heitz, Florian; du Bois, Andreas; Harter, Philipp; Schwaab, Ira; Bean, Yukie; Pejovic, Tanja; Levine, Douglas A.; Goodman, Marc T.; Camey, Michael E.; Thompson, Pamela J.; Lurie, Galina; Shildkraut, Joellen; Berchuck, Andrew; Terry, Kathryn Lynne; Cramer, Daniel William; Norris, Murray D.; Haber, Michelle; MacGregor, Stuart; deFazio, Anna; Chenevix-Trench, Georgia (Elsevier BV, 2013)
      Objective ABCB1 encodes the multi-drug efflux pump P-glycoprotein (P-gp) and has been implicated in multi-drug resistance. We comprehensively evaluated this gene and flanking regions for an association with clinical ...
    • Abcb10 physically interacts with mitoferrin-1 (Slc25a37) to enhance its stability and function in the erythroid mitochondria 

      Chen, Wen; Paradkar, P. N.; Li, L.; Pierce, E. L.; Langer, N. B.; Takahashi-Makise, N.; Hyde, B. B.; Shirihai, O. S.; Ward, D. M.; Kaplan, J.; Paw, Barry Htin (Proceedings of the National Academy of Sciences, 2009)
      Mitoferrin-1 (Mfrn1; Slc25a37), a member of the solute carrier family localized in the mitochondrial inner membrane, functions as an essential iron importer for the synthesis of mitochondrial heme and iron–sulfur clusters ...
    • The ABCFM press and the development of the Western Armenian language 

      Merguerian, Barbara J. (Harvard Library, 1999)
    • ABCG2 regulates self-renewal and stem cell marker expression but not tumorigenicity or radiation resistance of glioma cells 

      Wee, Boyoung; Pietras, Alexander; Ozawa, Tatsuya; Bazzoli, Elena; Podlaha, Ondrej; Antczak, Christophe; Westermark, Bengt; Nelander, Sven; Uhrbom, Lene; Forsberg-Nilsson, Karin; Djaballah, Hakim; Michor, Franziska; Holland, Eric C. (Nature Publishing Group, 2016)
      Glioma cells with stem cell traits are thought to be responsible for tumor maintenance and therapeutic failure. Such cells can be enriched based on their inherent drug efflux capability mediated by the ABC transporter ABCG2 ...
    • abd-A Regulation by the iab-8 Noncoding RNA 

      Gummalla, Maheshwar; Maeda, Robert K.; Castro Alvarez, Javier J.; Gyurkovics, Henrik; Singari, Swetha; Edwards, Kevin A.; Karch, François; Bender, Welcome W. (Public Library of Science, 2012)
      The homeotic genes in Drosophila melanogaster are aligned on the chromosome in the order of the body segments that they affect. The genes affecting the more posterior segments repress the more anterior genes. This posterior ...
    • Abdominal Cross-sectional Imaging for Inpatients With Abnormal Liver Function Test Results 

      Rothschild, Jeffrey Mark; Khorasani, Ramin; Silverman, Stuart George; Hanson, Richard; Fiskio, Julie M.; Bates, David Westfall (American Medical Association (AMA), 2001)
      Background: Abdominal cross-sectional imaging is often performed to evaluate abnormal liver function test (LFT) results in hospitalized patients. However, few data are available regarding the yield and usefulness of imaging ...
    • Abdominal obesity and hyperglycemia mask the effect of a common APOC3 haplotype on the risk of myocardial infarction 

      Ruiz-Narváez, Edward; Sacks, Frank Martin; Campos, Hannia (American Society for Nutrition, 2008)
      Background Plasma apolipoprotein (apo) C-III strongly predicts myocardial infarction (MI) and directly activates atherogenic processes invascularcells.Geneticvariationintheinsulinresponseelementofthe APOC3 promoter is ...
    • Abdominal Pain, the Adolescent and Altered Brain Structure and Function 

      Hubbard, Catherine S.; Becerra, Lino; Heinz, Nicole; Ludwick, Allison; Rasooly, Tali; Wu, Rina; Johnson, Adriana; Schechter, Neil L.; Borsook, David; Nurko, Samuel (Public Library of Science, 2016)
      Irritable bowel syndrome (IBS) is a functional gastrointestinal (GI) disorder of unknown etiology. Although relatively common in children, how this condition affects brain structure and function in a pediatric population ...