Search Results - "Armstrong, Daniel W"

Advances in high-throughput and high-efficiency chiral liquid chromatographic separations by Patel, Darshan C., Wahab, M. Farooq, Armstrong, Daniel W., Breitbach, Zachary S.

“…•High throughput and high efficiency chiral separations are reviewed.•The date range covers 21st century advances in chiral separations.•High throughput…”
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Fundamental and Practical Insights on the Packing of Modern High-Efficiency Analytical and Capillary Columns by Wahab, M. Farooq, Patel, Darshan C, Wimalasinghe, Rasangi M, Armstrong, Daniel W

“…New stationary phases are continuously developed for achieving higher efficiencies and unique selectivities. The performance of any new phase can only be…”
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Detection and analysis of chiral molecules as disease biomarkers by Liu, Yaoran, Wu, Zilong, Armstrong, Daniel W., Wolosker, Herman, Zheng, Yuebing

“…The chirality of small metabolic molecules is important in controlling physiological processes and indicating the health status of humans. Abnormal…”
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Ramifications and Insights on the Role of Water in Chiral Sub/Supercritical Fluid Chromatography by Roy, Daipayan, Wahab, M. Farooq, Berger, Terry A, Armstrong, Daniel W

“…More than 40 cosolvents have been used with carbon dioxide to alter its solvation strength. Among the most interesting systems is the subcritical/supercritical…”
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Use of CE for the determination of binding constants by Jiang, Chunxia, Armstrong, Daniel W

“…In the past two decades, CE has been used frequently for the measurement of apparent binding/association constants. CE has numerous advantages, including short…”
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Highly Efficient Asymmetric Direct Stoichiometric Aldol Reactions on/in Water by Huang, Junmin, Zhang, Xiaotong, Armstrong, Daniel W

“…Hydrophobic pocket pleaser: A novel asymmetric catalytic system in water mediated by sulfated β‐cyclodextrin (see picture) can bind the organocatalyst…”
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Chiral ionic liquids: A compendium of syntheses and applications (2005-2012) by Payagala, Tharanga, Armstrong, Daniel W.

“…In recent years, the field of chiral ionic liquids (CILs) has undergone exponential growth. As the technology has advanced, new ways of synthesizing stable and…”
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Comparison of core‐shell versus fully porous particle packings for chiral liquid chromatography productivity by Lee, Jauh Tzuoh, Berthod, Alain, Armstrong, Daniel W.

“…A loading and productivity study was done using three racemates on vancomycin and teicoplanin‐bonded chiral stationary phases of different particle formats…”
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Synthesis of Thermally Stable Geminal Dicationic Ionic Liquids and Related Ionic Compounds: An Examination of Physicochemical Properties by Structural Modification by Patil, Rahul A, Talebi, Mohsen, Xu, Chengdong, Bhawal, Sumit S, Armstrong, Daniel W

“…Geminal dicationic ionic liquids (ILs) often display higher thermal stabilities, viscosities, and densities compared to traditional monocationic ILs. Also,…”
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Degradation Study of Carnosic Acid, Carnosol, Rosmarinic Acid, and Rosemary Extract (Rosmarinus officinalis L.) Assessed Using HPLC by Zhang, Ying, Smuts, Jonathan P, Dodbiba, Edra, Rangarajan, Rekha, Lang, John C, Armstrong, Daniel W

“…Rosemary, whose major caffeoyl-derived and diterpenoid ingredients are rosmarinic acid, carnosol, and carnosic acid, is an important source of natural…”
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Two-dimensional high performance liquid chromatography for determination of homocysteine, methionine and cysteine enantiomers in human serum by Deáková, Zuzana, Ďuračková, Zdeňka, Armstrong, Daniel W., Lehotay, Jozef

“…•On line system with two columns.•Determination of amino acid enantiomers without derivatization.•Application of the method to the real samples analysis. A…”
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Immobilized Ionic Liquids as High-Selectivity/High-Temperature/High-Stability Gas Chromatography Stationary Phases by Anderson, Jared L, Armstrong, Daniel W

“…Ionic liquids (ILs) are a class of nonmolecular solvents in which the cation/anion combination can be easily tuned to provide desired chemical and physical…”
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Variations of l- and d-amino acid levels in the brain of wild-type and mutant mice lacking d-amino acid oxidase activity by Du, Siqi, Wang, Yadi, Weatherly, Choyce A., Holden, Kylie, Armstrong, Daniel W.

“…d -amino acids are now recognized to be widely present in organisms and play essential roles in biological processes. Some d -amino acids are metabolized by d…”
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Enzyme-Catalyzed Hydrolysis of Cellulose in Ionic Liquids: A Green Approach Toward the Production of Biofuels by Bose, Sayantan, Armstrong, Daniel W, Petrich, Jacob W

“…We investigated the reactivity and stability of a commercial mixture of cellulases in eight ionic liquids by optical and calorimetric techniques. First,…”
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Antibody binding of amyloid beta peptide epimers/isomers and ramifications for immunotherapies and drug development by Readel, Elizabeth R., Patel, Arzoo, Putman, Joshua I., Du, Siqi, Armstrong, Daniel W.

“…Extracellular deposition of amyloid beta (Aβ) peptide is a contributing factor of Alzheimer’s disease (AD). Considerable effort has been expended to create…”
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Structure and Properties of High Stability Geminal Dicationic Ionic Liquids by Anderson, Jared L, Ding, Rongfang, Ellern, Arkady, Armstrong, Daniel W

“…Thirty-nine geminal dicationic ILs were synthesized and characterized in terms of their surface tensions, densities, melting points, refractive indices,…”
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Quinine bonded to superficially porous particles for high-efficiency and ultrafast liquid and supercritical fluid chromatography by Patel, Darshan C., Breitbach, Zachary S., Yu, JeongJae, Nguyen, Kate A., Armstrong, Daniel W.

“…Two new anion-exchange columns were prepared by bonding tert-butyl carbamoylated quinine to 2.7 μm superficially porous particle (SPP) silica to create chiral…”
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Macrocyclic glycopeptide chiral selectors bonded to core-shell particles enables enantiopurity analysis of the entire verubecestat synthetic route by Barhate, Chandan L., Lopez, Diego A., Makarov, Alexey A., Bu, Xiaodong, Morris, William J., Lekhal, Azzeddine, Hartman, Robert, Armstrong, Daniel W., Regalado, Erik L.

“…•Macrocyclic glycopeptide chiral selectors bonded to core-shell particles for enantiopurity analysis of pharmaceutical drugs and synthetic intermediates.•A…”
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Development of New HPLC Chiral Stationary Phases Based on Native and Derivatized Cyclofructans by Sun, Ping, Wang, Chunlei, Breitbach, Zachary S, Zhang, Ying, Armstrong, Daniel W

“…An unusual class of chiral selectors, cyclofructans, is introduced for the first time as bonded chiral stationary phases. Compared to native cyclofructans…”
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Altered profiles and metabolism of l- and d-amino acids in cultured human breast cancer cells vs. non-tumorigenic human breast epithelial cells by Du, Siqi, Wang, Yadi, Alatrash, Nagham, Weatherly, Choyce A., Roy, Daipayan, MacDonnell, Frederick M., Armstrong, Daniel W.

“…•Free l-and d-amino acid profiles in MCF-7 breast cancer cells vs. MCF-10A non-tumorigenic breast cells were determined for the first time.•Free L-and D-amino…”
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