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Showing 1 to 12 of 813 entries
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Aiming for Study Comparability in Parkinson's Disease: Proposal for a Modular Set of Biomarker Assessments to be Used in Longitudinal Studies.

Frontiers in aging neuroscience

Lerche S, Heinzel S, Alves GW, Barone P, Behnke S, Ben-Shlomo Y, Berendse H, Bloem BR, Burn D, Dodel R, Grosset DG, Hipp G, Hu MT, Kasten M, Krüger R, Liepelt-Scarfone I, Maetzler W, Moccia M, Mollenhauer B, Oertel W, Roeben B, Walter U, Wirdefeldt K, Berg D.
PMID: 27303289
Front Aging Neurosci. 2016 May 27;8:121. doi: 10.3389/fnagi.2016.00121. eCollection 2016.

No abstract available.

Hepatocellular carcinoma after locoregional therapy: Magnetic resonance imaging findings in falsely negative exams.

World journal of hepatology

Becker-Weidman D, Civan JM, Deshmukh SP, Roth CG, Herrine SK, Parker L, Mitchell DG.
PMID: 27326315
World J Hepatol. 2016 Jun 08;8(16):685-90. doi: 10.4254/wjh.v8.i16.685.

AIM: To elucidate causes for false negative magnetic resonance imaging (MRI) exams by identifying imaging characteristics that predict viable hepatocellular carcinoma (HCC) in lesions previously treated with locoregional therapy when obvious findings of recurrence are absent.METHODS: This retrospective institutional...

Kinetics of Hydrogen Radical Reactions with Toluene Including Chemical Activation Theory Employing System-Specific Quantum RRK Theory Calibrated by Variational Transition State Theory.

Journal of the American Chemical Society

Bao JL, Zheng J, Truhlar DG.
PMID: 26841076
J Am Chem Soc. 2016 Mar 02;138(8):2690-704. doi: 10.1021/jacs.5b11938. Epub 2016 Feb 18.

Pressure-dependent reactions are ubiquitous in combustion and atmospheric chemistry. We employ a new calibration procedure for quantum Rice-Ramsperger-Kassel (QRRK) unimolecular rate theory within a chemical activation mechanism to calculate the pressure-falloff effect of a radical association with an aromatic...

Computational Kinetics by Variational Transition-State Theory with Semiclassical Multidimensional Tunneling: Direct Dynamics Rate Constants for the Abstraction of H from CH.

The journal of physical chemistry. A

Meana-Pañeda R, Xu X, Ma H, Truhlar DG.
PMID: 28140597
J Phys Chem A. 2017 Mar 02;121(8):1693-1707. doi: 10.1021/acs.jpca.6b10600. Epub 2017 Feb 15.

Rate constants and the product branching ratio for hydrogen abstraction from CH

Automatic Selection of an Active Space for Calculating Electronic Excitation Spectra by MS-CASPT2 or MC-PDFT.

Journal of chemical theory and computation

Bao JJ, Dong SS, Gagliardi L, Truhlar DG.
PMID: 29486125
J Chem Theory Comput. 2018 Apr 10;14(4):2017-2025. doi: 10.1021/acs.jctc.8b00032. Epub 2018 Mar 14.

Multireference methods such as multistate complete active space second-order perturbation theory (MS-CASPT2) and multiconfiguration pair-density functional theory (MC-PDFT) can be very accurate, but they have the disadvantage that they are not black-box methods, and finding a good active space...

Computational electrochemistry: prediction of liquid-phase reduction potentials.

Physical chemistry chemical physics : PCCP

Marenich AV, Ho J, Coote ML, Cramer CJ, Truhlar DG.
PMID: 24958074
Phys Chem Chem Phys. 2014 Aug 07;16(29):15068-106. doi: 10.1039/c4cp01572j. Epub 2014 Jun 24.

This article reviews recent developments and applications in the area of computational electrochemistry. Our focus is on predicting the reduction potentials of electron transfer and other electrochemical reactions and half-reactions in both aqueous and nonaqueous solutions. Topics covered include...

Including Torsional Anharmonicity in Canonical and Microcanonical Reaction Path Calculations.

Journal of chemical theory and computation

Zheng J, Truhlar DG.
PMID: 26583971
J Chem Theory Comput. 2013 Jul 09;9(7):2875-81. doi: 10.1021/ct400231q. Epub 2013 Jun 03.

We reformulate multistructural variational transition state theory by removing the approximation of calculating torsional anharmonicity only at stationary points. The multistructural method with torsional anharmonicity is applied to calculate the reaction-path free energy of the hydrogen abstraction from the...

Compensating for Language Deficits in Amnesia I: H.M.'s Spared Retrieval Categories.

Brain sciences

MacKay DG, Johnson LW, Fazel V, James LE.
PMID: 24961315
Brain Sci. 2013 Mar 14;3(1):262-93. doi: 10.3390/brainsci3010262.

Three studies examined amnesic H.M.'s use of words, phrases, and propositions on the Test of Language Competence (TLC). In Study 1, H.M. used 19 lexical categories (e.g., common nouns, verbs) and one syntactic category (noun phrases) with the same...

Accelerating the Convergence and Reducing the Variance of Path Integral Calculations of Quantum Mechanical Free Energies by Using Local Reference Potentials.

Journal of chemical theory and computation

Mielke SL, Truhlar DG.
PMID: 26593652
J Chem Theory Comput. 2012 May 08;8(5):1589-96. doi: 10.1021/ct300098p. Epub 2012 Apr 05.

We present two new methods to accelerate the convergence of Feynman path integral calculations of thermodynamic partition functions. The first enhancement uses information from instantaneous normal mode (INM) calculations to decrease the number of discretized points necessary to represent...

Accuracy of Effective Core Potentials and Basis Sets for Density Functional Calculations, Including Relativistic Effects, As Illustrated by Calculations on Arsenic Compounds.

Journal of chemical theory and computation

Xu X, Truhlar DG.
PMID: 26605468
J Chem Theory Comput. 2011 Sep 13;7(9):2766-79. doi: 10.1021/ct200234r. Epub 2011 Aug 09.

For molecules containing the fourth-period element arsenic, we test (i, ii) the accuracy of all-electron (AE) basis sets from the def2-xZVP and ma-xZVP series (where xZ is S, TZ, or QZ), (iii) the accuracy of the 6-311G series of...

Polarization Effects in Aqueous and Nonaqueous Solutions.

Journal of chemical theory and computation

Marenich AV, Olson RM, Chamberlin AC, Cramer CJ, Truhlar DG.
PMID: 26636201
J Chem Theory Comput. 2007 Nov;3(6):2055-67. doi: 10.1021/ct7001539.

Polarization effects in aqueous and nonaqueous solutions were analyzed for nine neutral and three charged organic solutes by the SM8 universal implicit solvation model and class IV partial atomic charges based on Charge Model 4M (CM4M) with the M06-2X...

Perspectives on Basis Sets Beautiful: Seasonal Plantings of Diffuse Basis Functions.

Journal of chemical theory and computation

Papajak E, Zheng J, Xu X, Leverentz HR, Truhlar DG.
PMID: 26598144
J Chem Theory Comput. 2011 Oct 11;7(10):3027-34. doi: 10.1021/ct200106a. Epub 2011 Aug 31.

We present a perspective on the use of diffuse basis functions for electronic structure calculations by density functional theory and wave function theory. We especially emphasize minimally augmented basis sets and calendar basis sets. We base our conclusions on...

Showing 1 to 12 of 813 entries