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NIST Authors in Bold

Displaying 101 - 125 of 1412

Conformational Analysis of the Jet-Cooled Peptide Mimetic Ethylacetamidoacetate from Torsion-Rotation Spectra

September 1, 2003
Author(s)
R J. Lavrich, Angela R. Hight Walker, David F. Plusquellic, I Kleiner, R D. Suenram, Jon T. Hougen, Gerald T. Fraser
… spectra of two conformers of the dipeptide mimetic, ethyl acetamidoacetate, were measured in a molecular beam … are a result of a change in the orientation of the ethyl group on the other end of the molecule. The predicted … conformational analysis, ethyl acetamidoacetate, least-squares fit, peptide mimetic, …

Rapid Detection of Sugar Alcohol Precursors and Corresponding Nitrate Ester Explosives using Direct Analysis in Real Time Mass Spectrometry

March 30, 2015
Author(s)
Edward Sisco, Thomas Forbes
… This work highlights the rapid detection of nitrate ester explosives and their sugar alcohol precursors by direct … is presented. Sensitivity of sugar alcohols and nitrate ester explosives was found to be greatest in negative mode … the effect of a precursor on the detection of a nitrate ester explosive), incorporation of dopant species, and the …

Comparison of Orthogonal Mass Spectrometry Platforms for the Determination of Amino Acid Concentrations in Human Plasma Certifying NIST Standard Reference Material 1950

August 16, 2010
Author(s)
Mark S. Lowenthal, Karen W. Phinney, Elizabeth A. McGaw
… in plasma from literature publications. Individual amino acid concentrations in plasma varied by over an order of … µmol/L). Average variability between experimental amino acid concentrations (excluding cysteine) among all methods … Mass Spectrometry Platforms for the Determination of Amino Acid Concentrations in Human Plasma Certifying NIST Standard …

Head on Comparison of Self- and Nano-Assemblies of Gamma Peptide Nucleic Acid Amphiphiles

February 9, 2022
Author(s)
Shipra Malik, Vikas Kumar, Chung-Hao Liu, Kuo-Chih Shih, Susan T. Krueger, Mu-Ping Neih, Raman Bahal
… Peptide nucleic acids (PNAs) are nucleic acid analogs with superior hybridization properties and enzymatic stability than deoxyribonucleic acid (DNA). In addition to gene targeting applications, PNAs … at the gamma position and covalently conjugated lauric acid (C12) as a hydrophobic moiety. Gamma PNA (γPNA) …

Inter-tool analysis of a NIST dataset for assessing baseline nucleic acid sequence screening

July 10, 2025
Author(s)
Tyler Laird, Kevin Flyangolts, Craig Bartling, Bryan Gemler, Jacob Beal, Tom Mitchell, Steven T. Murphy, Jens Berlips, Leonard Foner, Ryan Doughty, Felix Qunitana, Michael Nute, Todd J. Treangen, Gene D. Godbold, Krista Ternus, Tessa Alexanian, Nicole Wheeler, Samuel Forry
… Nucleic acid synthesis is a dual-use technology that can benefit … Nucleic acid synthesis, sequence screening, DNA screening, biosecurity … analysis of a NIST dataset for assessing baseline nucleic acid sequence screening …

Small-Angle Scattering Contrast Calculator for Protein and Nucleic Acid Complexes in Solution

December 1, 2013
Author(s)
Kathryn L Sarachan, Joseph E. Curtis, Susan Krueger
… experiments with contrast variation on protein and nucleic acid complexes. Based on the primary sequences and deuteration levels of each protein or nucleic acid component, the Contrast Calculator calculates and plots … neutron scattering, contrast variation, protein-nucleic acid complex, protein-protein complex …

Morphological Changes in Thin Polypropylene Films Induced by 4-Biphenyl Carboxylic Acid

October 16, 2008
Author(s)
Marlon L. Walker, Chad R. Snyder, Naomi Eidelman, E S. Etz, A P. Smith, Alamgir Karim, Eric J. Amis
… and containing a nucleating agent, 4-biphenyl carboxylic acid, was investigated by optical microscopy, atomic force … the activity of a nucleating agent, 4-biphenyl carboxylic acid in thin polypropylene films. The nucleating agent … techniques. The nucleating action of 4-biphenyl carboxylic acid facilitates crystalliteformation at temperatures 10 C to …

Perfluorinated Alkyl Acids in the Plasma of South African Crocodiles (Crocodylus niloticus)

July 1, 2016
Author(s)
Jessica L. Reiner, John Bowden, Ian Christie, Matthew P. Guillette, Theresa M. Cantu, Russell H. Lowers, Hannes Botha, Wilmien Luus-Powell, Willem J. Smit, Danny Govender, Danie Pienaar, Louis J. Guillette Jr.
… Perfluorinated alkyl acids (PFAAs) are environmental contaminants that have been … In addition to PFOS, long chain perfluorinated carboxylic acids were also detected. Correlations between overall size … Perfluorinated alkyl acids (PFAAs), PFOS, PFNA, Nile crocodiles, South Africa …

Thermodynamics of Reactions Catalyzed by D-Hydantoinase and N-Carbamoyl-D-Amino Acid Hydrolase

May 1, 2007
Author(s)
Yadu D. Tewari, N Kishore, Brian E. Lang, Robert N. Goldberg
… by the enzymes D-hydantoinase and N-carbamoyl-D-amino acid hydrolase. Values of apparent equilibrium constants K … catalyzed reactions: hydantoin(aq) + H2O(l) = ureidoacetic acid(aq); 5,6-dihydrouracil(aq) + H2O(l) = 3 ureidopropanoic acid(aq); 5-phenylhydantoin(aq) + H2O(l) = 5-phenyl …

Study of the Acid Generation in Aqueous Environments from Copolymer Fibers based on 5-amino-2-(p-aminophenyl)-benzimidazole

September 1, 2009
Author(s)
Amanda L. Forster, Guillaume Messin, Kirk D. Rice, Michael A. Riley, Stephanie S. Watson
… can release hydrochloric acid, which could potentially be detrimental to other fibers … safety issue. This study investigates the evolution of acid in aqueous environments from these fibers, reviews the … the fiber samples studied emitted a sufficient amount of acid to drop the pH of an aqueous solution from approximately …

Rotational Spectrum of Sarin

May 1, 2001
Author(s)
H Walker, R D. Suenram, A C. Samuels, J O. Jensen, M W. Ellzy, J M. Lochner, D Zeroka
… of the nerve agent sarin (GB) [Methylphosphonofluoridic acid 1-methyl-ethyl ester, CAS #107-4408]. Only one conformer of this …

Perfluorinated Alkyl Acids in Hawaiian Cetaceans and Potential Biomarkers of Effect: Peroxisome Proliferator-Activated Receptor Alpha and Cytochrome P450 4A

August 30, 2019
Author(s)
Adam Kurtz, Jessica L. Reiner, Kristi West, Brenda Jensen
… Perfluorinated alkyl acids (PFAAs) are persistent in marine biota and are toxic to … PFAA congeners, summation of perfluoroalkyl carboxylic acids (ΣPFCAs), and ΣPFAAs correlated significantly with … cetaceans, perfluorinated alkyl acids (PFAAs), PFOS, PFUnA, PPAR? …

Critical Evaluation of Thermodynamic Properties for Halobenzoic Acids Through Consistency Analyses for Results from Experiment and Computational Chemistry

June 14, 2017
Author(s)
Robert D. Chirico, Andrei F. Kazakov, Ala Bazyleva, Vladimir Diky, Kenneth Kroenlein, Vladimir N. Emel'yanenko, Sergey P. Verevkin
… Thermodynamic properties of the twelve monohalobenzoic acids are critically evaluated through application of … 4-halo isomers of fluoro, chloro-, bromo-, and iodobenzoic acids. Computations were validated by comparison with … additional support for the findings for the halobenzoic acids, as well as reveals some anomalous results in the …

The Ground and First Excited Torsional States of Acetic Acid

February 1, 2001
Author(s)
Vadim V. Ilyushin, E A. Alekseev, S K. Dyubko, S V. Podnos, I Kleiner, L Margules, G Wlodarczak, J Demaison, J Cosleou, B Mate, E N. Karyakin, G Y. Golubiatnikow, Gerald T. Fraser, R D. Suenram, Jon T. Hougen
… first excited torsional states (vt = 0 and 1) of acetic acid (CH3COOH) is reported, which combines older measurements … acetic acid, global fit, internal rotation, microwave spectrum, … The Ground and First Excited Torsional States of Acetic Acid …

Mapping the phenotypic landscape of a transcriptional repressor using Deep Mutational Scanning and Growth-based Quantitative Sequencing

December 2, 2025
Author(s)
Zachary Jansen, Xuan Le, Qiyao Wei, Devon Kulhanek, Nina Alperovich, Olga Vasilyeva, Andrew Gilmour, David Ross, Ross Thyer
… sequence in the promoter PcymRC. The native ligand cuminic acid and a series of structurally related aromatic acids can … DNA operator and de-repression of the promoter. The amino acid residues that contribute to these core functions have … landscape of CymR variants, including single amino acid insertions and deletions, spanning a concentration …
Displaying 101 - 125 of 1412
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