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Showing 1 to 12 of 301 entries
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Increasing colorectal cancer screening at an urban FQHC using iFOBT and patient navigation

community settings

Martin RL.
GSID: VHC_LtGKt6UJ
RL Martin, M Tully, A Kos, D Frazer… - Health Promotion …, 2017 - journals.sagepub.com

Introduction. Colorectal cancer is the second leading cause of cancer death in the United States. Black Americans suffer even higher incidence and death rates than the general …

Science education: too much of too little.

The American journal of physiology

Malvin RL.
PMID: 2363470
Am J Physiol. 1990 Jun;258(6):S3-7. doi: 10.1152/advances.1990.258.6.S3.

By all measures attempted, scientific literacy of the American public is sadly wanting. The vast majority of our secondary school children and adults have no knowledge of most of the basic terms or concepts of science. The reasons for...

Towards three-dimensional Weyl-surface semimetals in graphene networks.

Nanoscale

Zhong C, Chen Y, Xie Y, Yang SA, Cohen ML, Zhang SB.
PMID: 26971563
Nanoscale. 2016 Apr 07;8(13):7232-9. doi: 10.1039/c6nr00882h. Epub 2016 Mar 14.

Graphene as a two-dimensional topological semimetal has attracted much attention for its outstanding properties. In contrast, three-dimensional (3D) topological semimetals of carbon are still rare. Searching for such materials with salient physics has become a new direction in carbon...

Calculation of the specific heat of optimally K-doped BaFe₂As₂.

Journal of physics. Condensed matter : an Institute of Physics journal

Oh H, Coh S, Cohen ML.
PMID: 26241358
J Phys Condens Matter. 2015 Aug 26;27(33):335504. doi: 10.1088/0953-8984/27/33/335504. Epub 2015 Aug 04.

The calculated specific heat of optimally K-doped BaFe2As2 in density functional theory is about five times smaller than that found in the experiment. We report that by adjusting the potential on the iron atom to be slightly more repulsive...

Inhibiting Klein Tunneling in a Graphene p-n Junction without an External Magnetic Field.

Physical review letters

Oh H, Coh S, Son YW, Cohen ML.
PMID: 27419583
Phys Rev Lett. 2016 Jul 01;117(1):016804. doi: 10.1103/PhysRevLett.117.016804. Epub 2016 Jun 30.

We study by first-principles calculations a densely packed island of organic molecules (F_{4}TCNQ) adsorbed on graphene. We find that with electron doping the island naturally forms a p-n junction in the graphene sheet. For example, a doping level of...

Role of Geometric Distortion and Polarization in Localizing Electronic Excitations in Conjugated Polymers.

Journal of chemical theory and computation

Nayyar IH, Batista ER, Tretiak S, Saxena A, Smith DL, Martin RL.
PMID: 26588757
J Chem Theory Comput. 2013 Feb 12;9(2):1144-54. doi: 10.1021/ct300837d. Epub 2013 Jan 03.

Five different Density Functional Theory (DFT) models (ranging from pure GGA to long-range-corrected hybrid functionals) were used to study computationally the nature of the self-trapped electronic states in oligophenylene vinylenes. The electronic excitations in question include the lowest singlet...

Molecular geometry fluctuation model for the mobility of conjugated polymers.

Physical review letters

Yu ZG, Smith DL, Saxena A, Martin RL, Bishop AR.
PMID: 11017356
Phys Rev Lett. 2000 Jan 24;84(4):721-4. doi: 10.1103/PhysRevLett.84.721.

We present a model to describe electrical transport in dense films of conjugated polymers. The essential physical features of the model are as follows: (i) thermal fluctuations in the molecular geometry of the polymer modify the energy levels of...

The origin of the anomalous superconducting properties of MgB(2).

Nature

Choi HJ, Roundy D, Sun H, Cohen ML, Louie SG.
PMID: 12181561
Nature. 2002 Aug 15;418(6899):758-60. doi: 10.1038/nature00898.

Magnesium diboride differs from ordinary metallic superconductors in several important ways, including the failure of conventional models to predict accurately its unusually high transition temperature, the effects of isotope substitution on the critical transition temperature, and its anomalous specific...

Half-metallic graphene nanoribbons.

Nature

Son YW, Cohen ML, Louie SG.
PMID: 17108960
Nature. 2006 Nov 16;444(7117):347-9. doi: 10.1038/nature05180.

Electrical current can be completely spin polarized in a class of materials known as half-metals, as a result of the coexistence of metallic nature for electrons with one spin orientation and insulating nature for electrons with the other. Such...

Energy gaps in graphene nanoribbons.

Physical review letters

Son YW, Cohen ML, Louie SG.
PMID: 17155765
Phys Rev Lett. 2006 Nov 24;97(21):216803. doi: 10.1103/PhysRevLett.97.216803. Epub 2006 Nov 22.

Based on a first-principles approach, we present scaling rules for the band gaps of graphene nanoribbons (GNRs) as a function of their widths. The GNRs considered have either armchair or zigzag shaped edges on both sides with hydrogen passivation....

Density functional investigations of the properties and thermochemistry of UF6 and UF5 using valence-electron and all-electron approaches.

The Journal of chemical physics

Batista ER, Martin RL, Hay PJ, Peralta JE, Scuseria GE.
PMID: 15260768
J Chem Phys. 2004 Aug 01;121(5):2144-50. doi: 10.1063/1.1768518.

The structural properties and thermochemistry of UF6 and UF5 have been investigated using both Hartree-Fock and density functional theory (DFT) approximations. Within the latter approach, the local spin-density approximation, the generalized gradient approximation, and hybrid density functionals were considered....

Electron-phonon interaction via electronic and lattice Wannier functions: superconductivity in boron-doped diamond reexamined.

Physical review letters

Giustino F, Yates JR, Souza I, Cohen ML, Louie SG.
PMID: 17358802
Phys Rev Lett. 2007 Jan 26;98(4):047005. doi: 10.1103/PhysRevLett.98.047005. Epub 2007 Jan 24.

We present a first-principles technique for investigating the electron-phonon interaction with millions of k points in the Brillouin zone, which exploits the spatial localization of electronic and lattice Wannier functions. We demonstrate the effectiveness of our technique by elucidating...

Showing 1 to 12 of 301 entries