Results 11 to 20 of about 190,713 (248)

Application of New Supercritical Extraction Technology in Extraction and Separation of Effective Components of Traditional Chinese Medicine [PDF]

open access: yesMATEC Web of Conferences, 2021
Supercritical CO2 extraction technology uses supercritical CO2 fluid as extractant to extract and separate effective components from plants from liquid or solid. At present, CO2 is widely used in supercritical fluid, with a critical temperature of 31.265
Cheng Lijuan
doaj   +1 more source

High pressure liquid chromatography of benzimidazolcs

open access: yesPesticide Science, 1976
AbstractA laboratory‐assembled high pressure liquid chromatograph with variable wavelength ultraviolet detector is described. The chromatography of the systemic fungicides benomyl, thiabendazole, thiophanate, related fungicides and benzimidazoles (13 compounds in all) is described using reverse phase and adsorption systems.
Austin, D. J.   +2 more
openaire   +2 more sources

Bacterial Cell Wall Precursor Phosphatase Assays Using Thin-layer Chromatography (TLC) and High Pressure Liquid Chromatography (HPLC)

open access: yesBio-Protocol, 2018
Peptidoglycan encases the bacterial cytoplasmic membrane to protect the cell from lysis due to the turgor. The final steps of peptidoglycan synthesis require a membrane-anchored substrate called lipid II, in which the peptidoglycan subunit is linked to ...
Manuel Pazos   +2 more
doaj   +1 more source

Validation of a chromatographic method to routine analysis of trans-resveratrol and quercetin in red wines [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2017
: The objective of this work was to validate a fast method with low-solvent use, for the analysis of trans-resveratrol and quercetin in red wines. The wines were prepared, using a classical method, from the grape (Vitis vinifera) cultivars Cabernet Franc,
Letícia Flores da Silva   +4 more
doaj   +1 more source

Quantitative estimation of urinary ortho-cresol by high pressure liquid chromatography for biomonitoring of toluene exposed population

open access: yesEnvironmental Disease, 2020
Aim: Quantification of urinary ortho-cresol (OC) by high pressure liquid chromatography coupled with photodiode array detector. Materials and Methods: Includes acid hydrolysis of urine, liquid–liquid extraction, and chromatography quantification of ...
Anupa Yadav   +2 more
doaj   +1 more source

Enricher for Fraction of High-Pressure Liquid Chromatography [PDF]

open access: yesJournal of Chromatographic Science, 2005
A device is developed for concentrating a dilute solution without losing the components with boiling points slightly higher than the solvent. The device consists of an evaporator, receptor, and approximately 100 capillaries. A dilute solution is introduced into the evaporator and heated at a lower temperature than the boiling point of the solvent with ...
Masayuki Matsui   +2 more
openaire   +3 more sources

Effects of ropivacaine combined with morphine at 0.15 and 0.2 mg kg-1 in bitches undergoing epidural anesthesia [PDF]

open access: yesActa Cirúrgica Brasileira, 2015
PURPOSE: To investigate cardiorespiratory effects and serum concentration of ropivacaine combined with morphine at different doses.METHODS: Sixteen healthy adult female dogs weighting 9.8±4.1 kg were included in the study.
Verônica Batista de Albuquerque   +6 more
doaj   +2 more sources

Ultra-High-Pressure Liquid Chromatography ☆ [PDF]

open access: yes, 2017
One decade has passed since the introduction of commercial ultra-high-pressure liquid chromatography (UHPLC) technology and columns packed with sub-2-μm particles, which has led to significant improvements in separation efficiency and sample throughput. This article outlines fundamental and practical aspects of UHPLC.
Eeltink, Sebastiaan, De Vos, Jelle
openaire   +2 more sources

Numerical Simulation of Fluid Dynamics in a Monolithic Column

open access: yesSeparations, 2017
As for the measurement of polycyclic aromatic hydrocarbons (PAHs), ultra-performance liquid chromatography (UPLC) is used for PAH identification and densitometry.
Kazuhiro Yamamoto, Yuuta Tajima
doaj   +1 more source

Review of High-Speed Countercurrent Chromatography in Separation of Lanthanides and Actinides

open access: yesHe huaxue yu fangshe huaxue, 2022
In the field of radiochemistry, separation of lanthanides and actinides has always been one of the research hotspots. In order to achieve the burnup analysis, the lanthanide and actinide elements in the solution need to be separated.
LI Yu-hao   +6 more
doaj   +1 more source

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