Results 21 to 30 of about 31,646 (297)

Targeted Separation of COX-2 Inhibitor from Pterocephalus hookeri Using Preparative High-Performance Liquid Chromatography Directed by the Affinity Solid-Phase Extraction HPLC System

open access: yesMolecules, 2021
Pterocephalus hookeri, as a kind of popular traditional Tibetan medicine, is reputed to treat inflammatory related diseases. In the present work, a cyclooxygenase-2 functionalized affinity solid-phase extraction HPLC system was developed and combined ...
Yunhe Zhu   +8 more
doaj   +1 more source

Preparation of organic light-emitting diode using coal tar pitch, a low-cost material, for printable devices. [PDF]

open access: yesPLoS ONE, 2013
We have identified coal tar pitch, a very cheap organic material made from coal during the iron-making process, as a source from which could be obtained emissive molecules for organic light-emitting diodes.
Miki Yamaoka   +6 more
doaj   +1 more source

A rapid, preparative separation of methio [PDF]

open access: yesJournal of Chromatography A, 1967
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/33392/1/0000791 ...
Brink, John J., Sellinger, Otto Z.
openaire   +2 more sources

Isolation of some high-boiling or ganometallic compounds by preparative gas chromatography

open access: yesТонкие химические технологии, 2016
Preparative gas chromatography is proposed to isolate some high-boiling organometallic compounds. Isolation of high-boiling substances should be conducted at a column temperature significantly below the boiling point, because most isolated compounds are ...
G. N. Turkeltaub, E. A. Chernyshev
doaj   +1 more source

Characterization of preparation for fat separators

open access: yesNova Biotechnologica et Chimica, 2021
Fats, oils and greases in waste water frequently cause serious environmental problems. A commercial preparation was tested for its ability to degrade oil and grease in wastewater. As substrates, two fats (lard and beef fat) and four oils (rape seed oil, sunflower oil, palm oil and olive oil) were chosen.
Kateřina Illková   +3 more
openaire   +2 more sources

Absolute Configuration of Bromofluoroiodomethane after Preparative Gas Chromatographic Separation

open access: yes, 2021
The enantiomers of bromofluoroiodomethane (CHBrFI) were separated on a preparative scale using gas chromatography (GC). The collected single enantiomers were analysed by vibrational circular dichroism spectroscopy and polarimetry in combination with ab ...
Benjamin, Spenger   +3 more
core   +1 more source

Response Surface Optimized Extraction of 1-Deoxynojirimycin from Mulberry Leaves (Morus alba L.) and Preparative Separation with Resins

open access: yesMolecules, 2014
In the present study, the extraction technology and preparative separation of 1-deoxynojirimycin from mulberry leaves were systematically investigated. Four extraction parameters (ethanol concentration, extraction temperature, extraction time and ratio ...
Teng Wang   +3 more
doaj   +1 more source

Influence of electrostatic interactions in electrophoretic membrane contactors [PDF]

open access: yes, 2002
In electrophoretic separators, a porous membrane is used to put into contact two flowing liquids between which an electrically driven mass transfer takes place.
Roux-de Balmann, Hélène   +1 more
core   +1 more source

Preparative separation and purification of bufadienolides from ChanSu by high-speed counter-current chromatography combined with preparative HPLC

open access: yesQuímica Nova, 2013
Eight bufadienolides were successfully isolated and purified from ChanSu by high-speed counter-current chromatography (HSCCC) combined with preparative HPLC (prep-HPLC).
Jialian Li   +6 more
doaj   +1 more source

Separation of molecular species of sphingomyelin and ceramide by argentation and reversed-phase HPLC.

open access: yesJournal of Lipid Research, 1981
A convenient method for the separation of molecular species of complex lipids such as sphingomyelin and ceramide by argentation high performance liquid chromatography (HPLC) is described for the first time.
M Smith, P Monchamp, F B Jungalwala
doaj   +1 more source

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