Results 51 to 60 of about 3,799,494 (356)
Comparative Analysis of Liquid Chromatography-Tandem Mass Spectrometry and Radioimmunoassay in Determining Plasma Aldosterone Concentration and Plasma Renin Activity for Primary Aldosteronism Screening [PDF]
Endocrinology and MetabolismLiquid chromatography-tandem mass spectrometry (LC-MS/MS) accurately measures plasma aldosterone concentration (PAC), but its correlation with radioimmunoassay (RIA), equivalent RIA levels, and optimal cutoff for PAC and aldosterone-to-renin ratio (ARR ...
So Yoon Kwon +3 more
doaj +1 more source
Current Issues in Pharmacy and Medical Sciences, 2022 Any chosen analytical method should be subtle, precise, fast and exact to begin the guarantee that the material used in the manufacturing is free of unsolicited impurity, the existence of which may vary the safety and effectiveness of the drug product ...
Gupta Manish Kumar +6 more
doaj +1 more source
Analysis of total urinary catecholamines by liquid chromatography: methodology, routine experience and clinical interpretations of results [PDF]
, 1983 A simple routine method is described for simultaneous assay of total urinary adrenaline, noradrenaline and dopamine. The catecholamines are pre-purified on a small ion-exchange column, separated by reversed phase ion-pair liquid chromatography, and are ...
Kees, Frieder K. +2 more
core +1 more source
A Statistical Approach to Estimating Adsorption-Isotherm Parameters in Gradient-Elution Preparative Liquid Chromatography [PDF]
arXiv, 2022 Determining the adsorption isotherms is an issue of significant importance in preparative chromatography. A modern technique for estimating adsorption isotherms is to solve an inverse problem so that the simulated batch separation coincides with actual experimental results.
arxiv
Acoustic Resonance Effects and Cavitation in SAW Aerosol Generation [PDF]
, 2023 The interaction of surface acoustic waves (SAWs) with liquids enables the production of aerosols with adjustable droplet sizes in the micrometer range expelled from a very compact source. Understanding the nonlinear acousto-hydrodynamics of SAWs with a regulated micro-scale liquid film is essential for acousto-microfluidics platforms, particularly ...
arxiv +1 more source
Journal of Separation Science, 2018 The characterization of biotherapeutics represents a major analytical challenge. This review discusses the current state-of-the-art in analytical technologies to profile biopharma products under native conditions, i.e., the protein three dimensional ...
Marco Tassi +5 more
semanticscholar +1 more source
Synthesis of endohedral iron-fullerenes by ion implantation [PDF]
, 2015 In this paper, we discuss the results of our study of the synthesis of endohedral iron-fullerenes. A low energy Fe+ ion beam was irradiated to C60 thin film by using a deceleration system. Fe+-irradiated C60 thin film was analyzed by high performance liquid chromatography and laser desorption/ionization time-of-flight mass spectrometry. We investigated
arxiv +1 more source
Applied Sciences, 2022 Vinegars are natural products manufactured by two-step fermentation. One of the most famous is balsamic vinegar, especially that produced in Modena, Italy. Its unique production process positively distinguishes it from other vinegars. There are basically
Michal Kašpar, Petr Česla
doaj +1 more source
Optimizing separations in online comprehensive two‐dimensional liquid chromatography
Journal of Separation Science, 2017 Online comprehensive two‐dimensional liquid chromatography has become an attractive option for the analysis of complex nonvolatile samples found in various fields (e.g. environmental studies, food, life, and polymer sciences).
Bob W. J. Pirok +2 more
semanticscholar +1 more source
STRUCTURE OF METHYLPHEOPHORBIDE-RCI [PDF]
, 1986 he methanolic extract of the cyanobacterium (blue-green alga) Spirulina geitleri has been treated with methanolic acid to convert all chlorophyllous pigments to their methylpheophorbides.
Budzikiewicz H. +27 more
core +1 more source