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Displaying 226 - 250 of 1412

NIST Micronutrients Measurement Quality Assurance Program Summer 2005 Comparability Studies: Results for Round Robin LVIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 23 Ascorbic Acid in Human Serum

June 27, 2013
Author(s)
David L. Duewer, Jeanice M. Brown Thomas
… in Human Serum and 2) Round Robin 23 Total Ascorbic Acid in Human Serum. The materials for both studies were … Total and Trans-beta-Carotene, Total Ascorbic Acid, SRM 3276 … and Carotenoids in Human Serum and Round Robin 23 Ascorbic Acid in Human Serum …

Target and Suspect Screening Integrated with Machine Learning to Discover Per- and Polyfluoroalkyl Substance Source Fingerprints

September 11, 2023
Author(s)
Nayantara Joseph, Trever Schwichtenberg, Dunping Cao, Gerrad Jones, Alix Rodowa, Joe Charbonnet, Christopher Higgins, Damian Helbling, Jennifer Field
… suspect PFAS (trihydrogen-substituted fluoroethernonanoic acid) were diagnostic of AFFF-GW. Two target PFASs (5:3 and … and two suspect PFASs (4:2 fluorotelomer-thia-acetic acid and N-methylperfluoropropane sulfonamido acetic acid) … along with landfill leachates and N-methyl and N-ethyl perfluorooctane sulfonamido acetic acid assisted in …

Certification of Standard Reference Material(R) 2386 Avocado Powder

October 20, 2021
Author(s)
Melissa M. Phillips, Laura J. Wood, George Caceres, Grace Hahm, Karen E. Murphy, Rick L. Paul, Benjamin Place, James H. Yen
The National Institute of Standards and Technology (NIST) recently released SRM 2386 Avocado Powder which has value assignment for over 70 analytes. This material has certified values assigned for 22 analytes and non-certified values assigned for 53

Cellular Response to Phase-Separated Blends of Tyrosine-Derived Polycarbonate

March 1, 2006
Author(s)
L A. Bailey, Matthew Becker, J S. Stephens, Nathan D. Gallant, Christine M. Mahoney, N Washburn, Aarti Rege, J Kohn, Eric J. Amis
… of homopolymer and discrete compositional blends of the ethyl (DTE) and octyl (DTO) ester polycarbonate derivatives were prepared as substrates …

Copolymer Fraction Effect on Acid Catalyzed Deprotection Reaction Kinetics in Model 193 nm Photoresists

February 19, 2006
Author(s)
Shuhui Kang, Vivek Prabhu, B D. Vogt, Eric K. Lin, Wen-Li Wu, Karen Turnquest
… A correlation between polymer molecular structure and acid catalyzed kinetics is demonstrated by a binary copolymer photoresists system which includes an acid-liable and an acid-inert species. It was found that the acid catalyzed … Copolymer Fraction Effect on Acid Catalyzed Deprotection Reaction Kinetics in Model 193 nm …

ELECTRICAL AND PHYSICAL CHARACTERIZATION OF BILAYER CARBOXYLIC ACID FUNCTIONALIZED MOLECULAR LAYERS

January 30, 2013
Author(s)
Sujitra J. Pookpanratana, Joseph W. Robertson, Cherno Jaye, Daniel A. Fischer, Curt A. Richter, Christina A. Hacker
… monolayer and bilayer molecular junctions of carboxylic acid-containing molecules with Cu atom incorporation. Carboxylic acid-terminated monolayers are self-assembled onto … FCL was used to form monolayer junctions of carboxylic acid-terminated Au to H-terminated Si, or bilayer junctions …

Polyoxocationic Antimony Oxide Cluster with Acidic Protons

June 17, 2022
Author(s)
Yuki Watanabe, Kim Hyeon-Deuk, Takafumi Yamamoto, Masayoshi Yabuuchi, Olesia M. Karakulina, Yasuto Noda, Takuya Kurihara, I-Ya Chang, Masanobu Higashi, Osamu Tomita, Cedric Tassel, Daichi Kato, Jingxin Xia, Tatsuhiko Goto, Craig Brown, Yuto Shimoyama, Naoki Ogiwara, Joke Hadermann, Artem M. Abakumov, Sayaka Uchida, Ryu Abe, Hiroshi Kageyama
… cluster is characterized by the presence of highly acidic protons on its surface due to significant Sb 3+ … Polyoxocationic Antimony Oxide Cluster with Acidic Protons …

Biosynthesis of Athmu, a alpha,gamma-hydroxy-ss-amino acid of pahayokolides A-B

October 2, 2012
Author(s)
Li Liu, Dan Bearden, Juan C. Rodriguez, Kathleen S. Rein
… of the 3-amino-2,5,7,8- tetrahydroxy-10-methylundecanoic acid (Athmu) moiety has been investigated using stable … isotope incorporation experiments. While α-ketoisocaproic acid (α-KIC), α-hydroxyisocaproic acid (α- HIC) and leucine all serve as precursors to Athmu, …

Tissue Distribution of Perfluoroalkyl Acids (PFAAs) and Health Status in Wild Mozambique Tilapia (Oreochromis mossambicus) from Loskop Dam, Mpumalanga, South Africa

November 29, 2017
Author(s)
Jacqueline T. Bangma, Jessica L. Reiner, Hannes Botha, Theresa M. Cantu, Marco Gouws, Matthew P. Guillette, Jeremy P. Koelmel, Wilmien Luus-Powell, Olivia Rynders, Joseph Sara, Willem J. Smit, John Bowden
… and 2016 to investigate the levels of 15 perfluoroalkyl acids (PFAAs) across six tilapia tissues. Nine of the 15 … Perfluoroalkyl acids, Mozambique tilapia, liquid chromatography mass … Tissue Distribution of Perfluoroalkyl Acids (PFAAs) and Health Status in Wild Mozambique Tilapia …

Acid-Induced Assembly of a Reconstituted Silk Protein System

August 10, 2017
Author(s)
A. Pasha Tabatabai, Kathleen Weigandt, Daniel L. Blair
… silk materials. The addition of < 8 mM hydrochloric acid to a reconstituted silk solution induces aggregation, … for aggregate formation. We find that the introduction of acid modulates the aggregate size and pervaded volume of the … Acid-Induced Assembly of a Reconstituted Silk Protein System …

Biosynthetic origin of the 3-amino-2,5,7,8-tetrahydroxy-10-methylundecanoic acid moiety and absolute configuration of pahayokolides A and B

June 8, 2011
Author(s)
Li Liu, Dan Bearden, Kathleen S. Rein
… Pahayokolide A contains the unusual α-hydroxy-β-amino acid, 3-amino-2,5,7,8- tetrahydroxy-10-methylundecanoic acid (Athmu). The starter unit for the biosynthesis of Athmu … of the 3-amino-2,5,7,8-tetrahydroxy-10-methylundecanoic acid moiety and absolute configuration of pahayokolides A and …

NIST Micronutrients Measurement Quality Assurance Program Winter and Summer 2000 Comparability Studies: Results for Round Robins XLVII and XLVIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 13 Ascorbic Acid in Human Serum

August 7, 2013
Author(s)
David L. Duewer, Margaret C. Kline, Katherine E. Sharpless, Jeanice M. Brown Thomas, Sam A. Margolis
… in Human Serum and 3) Round Robin 13 Total Ascorbic Acid in Human Serum. The materials for Round Robin XLVII were … Total and Trans-beta-Carotene, Total Ascorbic Acid … and Carotenoids in Human Serum and Round Robin 13 Ascorbic Acid in Human Serum …

SRM 1955, Homocysteine and Folate in Human Serum; Production of a New Standard Reference Material

October 16, 2008
Author(s)
Mary B. Satterfield, B C. Nelson, Lorna T. Sniegoski, Adriana Hornikova, Nien-Fan Zhang, Christine M. Pfeiffer, Michael J. Welch
… several folate forms including 5-methyl tetrahydrofolic acid (5MT) and folic acid (FA). Additionally, a new method for measurement of HCY, … 5-methyltetrahydrofolic acid, folates, folic acid, homocysteine, isotope dilution mass spectrometry, …

Covalent Attachment of Photoluminescent Silicon Nanoparticles to Streptavidin

September 11, 2007
Author(s)
Jonghoon Choi, Peter Niarhos, Nam S. Wang, Vytas Reipa
… crosslinker (4-azido-2,3,5,6-tetrafluorobenzoic acid, succinimidyl ester), and provides optical and chemical stabilities against … end of bifunctional cross linker - diazirine succinimidyl ester forms an amide bond with a carboxyl of target protein. …

Competitive Adsorption of Thiolated Polyethylene Glycol and Mercaptoproprionic acid on Gold Nanoparticles Measured by Physical Characterization Methods

May 24, 2010
Author(s)
De-Hao D. Tsai, Frank W. DelRio, Robert I. MacCuspie, Tae Joon Cho, Michael R. Zachariah, Vincent A. Hackley
… polyethylene glycol (SH-PEG) and mercaptoproprionic acid (MPA) on gold nanoparticles (Au-NP) were studied using … polyethylene glycol (PEG), Mercaptoproprionic acid (MPA), binding constant, adsorption, desorption … of Thiolated Polyethylene Glycol and Mercaptoproprionic acid on Gold Nanoparticles Measured by Physical …

modXNA: a modular approach to parameterization of modified nucleic acids for use with Amber force fields

October 29, 2024
Author(s)
Olivia Love, Rodrigo Galindo-Murillo, Daniel Roe, Pablo D. Dans, Thomas E. Cheatham III, Christina Bergonzo
… Modified nucleic acids have surged as a popular therapeutic route, emphasizing … and aptamers can incorporate various modified nucleic acids to target specific biomolecules for various therapeutic … and development of these systems with noncanonical nucleic acids by observing intricate dynamic properties and relative …

Identification of an analytical method interference for perfluorobutanoic acid in biological samples

December 31, 2021
Author(s)
Jacqueline Bangma, Jessica Reiner, Rebecca Fry, Tracey Manuck, James McCord, Mark Strynar
… previously identified PFAS. Of note, perfluorobutanoic acid (PFBA) is one of the smaller PFAS observed in biological … assign the interfering compound as the saturated oxo-fatty acid (SOFA) 3-oxo-dodecanoic acid. … of an analytical method interference for perfluorobutanoic acid in biological samples …
Displaying 226 - 250 of 1412
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