نتایج جستجو برای: separations
تعداد نتایج: 7786 فیلتر نتایج به سال:
This review presents a brief outline and novel developments of electrophoretic separation in microfluidic chips. Distinct characteristics of microchip electrophoresis (MCE) are discussed first, in which sample injection plug, joule heat, channel turn, surface adsorption and modification are introduced, and some successful strategies and recognized conclusions are also included. Important achiev...
Associations between histories of family disruption (residential moves and separations from parent figures) and adolescent adjustment (including educational, internalizing, externalizing, and sexual behavior outcomes) were examined in a random sample of 267 African American girls from 3 urban poverty neighborhoods. Higher numbers of residential moves and parental separations significantly predi...
Developments Muchena J. Kailemia,† L. Renee Ruhaak,‡ Carlito B. Lebrilla,‡ and I. Jonathan Amster*,† †Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States ‡Department of Chemistry, University of California at Davis, Davis, California 95616, United States ■ CONTENTS Ionization A MALDI Analysis B ESI Analysis B Ion Activation B Low-Energy Fragmentation C Electron A...
Let M be a matroid. When M is 2-connected, Cunningham and Edmonds gave a tree decomposition of M that displays all of its 2-separations. This result was extended by Oxley, Semple, and Whittle, who showed that, when M is 3-connected, there is a corresponding tree decomposition that displays all non-trivial 3-separations of M up to a certain natural equivalence. This equivalence is based on the n...
Microemulsions prepared by using either sodium dodecyl sulfate (SDS) or trimethyltetradecylammonium bromide (TTAB) were tested with regard to the migration time, selectivity and number of theoretical plates using a set of both water-soluble and lipid-soluble vitamins. While in the separations where SDS was used as the surface-active agent for microemulsion preparation, better resolutions were o...
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