Results 21 to 30 of about 181,345 (233)
Measurements of Protein-Protein Interactions by Size Exclusion Chromatography [PDF]
A method is presented for determining second virial coefficients B_2 of protein solutions from retention time measurements in size exclusion chromatography (SEC). We determine B_2 by analyzing the concentration dependance of the chromatographic partition coefficient.
arxiv +1 more source
Spin projection chromatography [PDF]
We formulate the many-body spin dynamics at high temperature within the non-equilibrium Keldysh formalism. For the simplest XY interaction, analytical expressions in terms of the one particle solutions are obtained for linear and ring configurations. For small rings of even spin number, the group velocities of excitations depend on the parity of the ...
arxiv +1 more source
BARCHAN: Blob Alignment for Robust CHromatographic ANalysis [PDF]
Comprehensive Two dimensional gas chromatography (GCxGC) plays a central role into the elucidation of complex samples. The automation of the identification of peak areas is of prime interest to obtain a fast and repeatable analysis of chromatograms.
arxiv +1 more source
This paper is a review in which difficulties for the determination of the fatty acid stereospecific positions in the triacyl-sn-glycerol molecules of natural fats are discussed.
V. Ruiz Gutiérrez, L. J. R. Barrón
doaj +1 more source
Synthesis of endohedral iron-fullerenes by ion implantation [PDF]
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
Analysis of α-lipoprotein cholesterol in 50 μl of plasma
A micromethod for quantitation of α-lipoprotein cholesterol was devised for gas–liquid chromatography to minimize plasma sample size and facilitate lipid studies using capillary blood from children or small animals. α-Lipoprotein cholesterol was measured
R.F. Lutmer+7 more
doaj
Complementarity to liquid and gas chromatography, supercritical fluid chromatography (SFC) is becoming a mainstream separation technique. There is a global demand for more SFC users since ‘green’ method development has become a favorable target for ...
Tricia Naicker, Kamini Govender
doaj +1 more source
Analytical methods used to determine pesticide residues in tea: A systematic review
Tea is a worldwide consumed beverage that is known for its variety of flavors and aroma, in addition to its antioxidant, antimicrobial, anti-carcinogenic, and anti-inflammatory properties.
Areej Merhi+3 more
doaj
Development and validation of GLC/MS-procedure of doxylamine quantitative determination
Doxylamine is a hypnotic medicine used for treatment of minor sleep disorders and is a frequent cause of poisoning. Aim. To develop GLC/MS-procedure of doxylamine quantification and carry out step-by-step validation of the developed procedure in the ...
L. Yu. Klimenko+3 more
doaj +1 more source
Duvatrienediols in cuticular wax of Burley tobacco leaves
4, 8, 13-Duvatriene-1, 3-diol diastereoisomers have been identified in the cuticular wax of fresh Burley tobacco leaves. Their structures were determined by gas-liquid chromatography, mass spectrometry, and infrared and ultraviolet spectroscopy ...
S Y Chang, C Grunwald
doaj