Results 11 to 20 of about 682,972 (294)

Self-interaction chromatography as a tool for optimizing conditions for membrane protein crystallization [PDF]

open access: yes, 2010
The second virial coefficient, or B value, is a measurement of how well a protein interacts with itself in solution. These interactions can lead to protein crystallization or precipitation, depending on their strength, with a narrow range of B values ...
Behlke   +26 more
core   +1 more source

Easily Fabricated Microfluidic Devices Using Permanent Marker Inks for Enzyme Assays

open access: yesMicromachines, 2016
In this communication, we describe microfluidic paper analytical devices (μPADs) easily fabricated from commercially available Sharpie ink permanent markers on chromatography paper to colorimetrically detect glucose using glucose oxidase (GOx).
Coreen Gallibu   +3 more
doaj   +1 more source

Conical Paper Chromatography [PDF]

open access: yesNature, 1957
A CIRCULAR filter paper suitable for partition paper chromatography is cut so that it can be made into a cone. A number of origins are marked at adequate intervals near the lower edge, the standard and unknown solutions are dropped on these origins (see Fig. 1) and chromatographic development allowed to take place in an upward direction.
openaire   +2 more sources

Studies on the compounds lipids from X-ray irradiated animal,1. [PDF]

open access: yes, 1962
For the purpose to reveal the mechanism of the biological indirect action of X-rays the author has conducted the analysis of the compound lipids of the organs of the rabbits irradiated with X-rays.
Ohara, Sachiko
core   +1 more source

Quantitative glass paper chromatography: a microdetermination of plasma cholesterol*

open access: yesJournal of Lipid Research, 1960
A rapid, sensitive method for the determination of sterols is described. Microgram samples are spotted on impregnated glass fiber paper, chromatographed for 7 minutes, dried, sprayed with sulfuric acid, and charred by heating.
Joseph R. Swartwout   +3 more
doaj   +1 more source

Base composition of DNA in adenovirus-12-induced tumor [PDF]

open access: yes, 1969
A series of experiments was conducted to study the base composition of DNA in AVl2-induced tumor and host cells by paper chromatography, and it was found that DNA per cent. guanine-cystosine contents were around 42 % in both of them. The base composition
Ohmori, Masaki
core   +1 more source

Toxicological Analysis of Some Drugs of Abuse in Biological Samples [PDF]

open access: yes, 2015
Consumption of drugs of abuse is a scourge of modern world. Abuse, drug addiction and their consequences are one of the major current problems of European society because of the significant repercussions in individual, family, social and economic level ...
Baconi, Daniela Luiza   +5 more
core   +3 more sources

Chromatography of lipids on commercial silica gel loaded filter paper

open access: yesJournal of Lipid Research, 1965
Commercial silica gel loaded filter paper has been found to give good separations of neutral lipids and phospholipids. Unidimensional or two-dimensional chromatography can be used. Rat liver lipids and C14-algae lipids were studied.
G.V. Marinetti
doaj   +1 more source

Paper Chromatography as Exemplified by Separation of Urocanic Acid and Deaminohistidine

open access: yesBio-Protocol, 2013
Paper chromatography is an ancient technique to separate low molecular mass compounds based on their distribution between mobile phase (solvent) and stationary phase (cellulose and cellulose-bound water). Paper chromatography has been largely replaced by
Alexander Bogachev
doaj   +1 more source

In pursuit of β-amino α-nitro β-trifluoromethyl ketones: nitro-Mannich vs Mannich-type reactions [PDF]

open access: yes, 2017
The reactivity of alfa-nitro ketones with trifluoromethyl aldimines is studied for the first time. While under nitro-Mannich conditions only the facial stereoselectivity can be controlled, organocatalysed Mannich-type reactions allowed a complete control
Ballini   +45 more
core   +1 more source

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