Results 1 to 10 of about 712,351 (297)

Split-ring resonator with interdigital Split electrodes as detector for liquid and ion chromatography

open access: yesSensing and Bio-Sensing Research
The analysis of food and drugs as well as the monitoring of chemical processes and bioreactors by high-performance liquid chromatography and ion chromatography requires universal, cost-effective, and sensitive detectors.
Kirsten J. Dehning   +2 more
doaj   +1 more source

Software Tools and Approaches for Compound Identification of LC-MS/MS Data in Metabolomics. [PDF]

open access: yes, 2018
The annotation of small molecules remains a major challenge in untargeted mass spectrometry-based metabolomics. We here critically discuss structured elucidation approaches and software that are designed to help during the annotation of unknown compounds.
Blaženović, Ivana   +3 more
core   +3 more sources

Quantification of DNA Products Using Ion-Pair Reverse Phase Liquid Chromatography [PDF]

open access: yes, 2017
The transcription of DNA via RNA polymerases is a fundamental process in cellular systems. In eukaryotic cells, we observe transcription in the nucleus (via genomic DNA) as well as in the mitochondria (via mitochondrial DNA).
Bestwick, Megan, Wienkers, Henry
core   +1 more source

Quantification of Nε-(2-Furoylmethyl)-L-lysine (furosine), Nε-(Carboxymethyl)-L-lysine (CML), Nε-(Carboxyethyl)-L-lysine (CEL) and total lysine through stable isotope dilution assay and tandem mass spectrometry [PDF]

open access: yes, 2015
The control of Maillard reaction (MR) is a key point to ensure processed foods quality. Due to the presence of a primary amino group on its side chain, lysine is particularly prone to chemical modifications with the formation of Amadori products (AP), Nε-
Fiore, Alberto   +3 more
core   +5 more sources

Effects of sodium silicate, calcium carbonate, and silicic acid on ammonium nitrate degradation, and analytical investigations of the degradation process on an industrial scale [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2015
Ammonium nitrate is an inorganic chemical that has numerous applications in different industries. However, various problems are associated with both the production and subsequent storage of ammonium nitrate, including caking, degradation ...
Gezerman Ahmet Ozan   +1 more
doaj   +1 more source

The Application of Laser Intracavity Absorption Detector to Gas Chromatography of Trace Organic Pollutants in Water [PDF]

open access: yes, 1982
A helium-neon (HeNe) laser operating simultaneously at 3.39 um (infrared) and 0.63 um (visible) has been used as a selective detector for hydrocarbons in the effluent of a gas chromatograph.
Green, Robert B.
core   +2 more sources

The alpha-effect in cyclic secondary amines: new scaffolds for iminium ion accelerated transformations [PDF]

open access: yes, 2009
Five-membered secondary amine heterocycles containing an α-heteroatom were prepared and shown to be ineffective as catalysts for the iminium ion catalysed Diels–Alder reaction between cinnamaldehyde and cyclopentadiene.
Cavill, Julie L.   +7 more
core   +1 more source

Hydrophobicity of various cation-exchange columns for ion chromatography

open access: yesJournal of Chromatography Open
The retention of organic cations including homologues of n-alkylamines, phenylalkylamines, and ethanolamines was investigated for 20 commercially produced cation-exchange columns with varying matrix, bonding chemistry, functional groups, and ion-exchange
Pavel N. Nesterenko   +1 more
doaj   +1 more source

GLC analysis of base composition of RNA and DNA hydrolysates [PDF]

open access: yes
Various methods used for the analysis of the base composition of RNA and DNA hydrolysates are presented. The methods discussed are: (1) ion-exchange chromatography, (2) paper chromatography, (3) paper electrophoresis, (4) thin layer chromatography, (5 ...
Gehreke, C. W., Lakings, D. B.
core   +1 more source

The development of a purification procedure for Peptide:n-Glycosidase A from Prunus amygdalus : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Biochemistry at Massey University [PDF]

open access: yes, 1997
Peptide-N4-acetyl-β-glucosaminyl) asparagine amidases cleave the amide bond between N-linked glycans at N-acetylglucosamine and asparagine, liberating intact oligosaccharide chains from glycoproteins. Although PNGase A is commonly used by glycobiologists
Diepen, Angela Corinne van
core  

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