Spectroscopic Study on Polymer Solution and Emulsion Using Fluorescence or Deuterium Labeled Compounds

Deuterium-labeled Steroids for Study in Humans

Deuterium-labeled 1,3,5(10)-estratriene-3,17b-diol was used for the estimation of estrogen production rates during normal pregnancy. The results for three patients are concordant with the available reports in the literature. Isotope dilution data were obtained by gas chromatography-mass spectrometry. The steroids were monitored by conventional scanning of the molecular weight range at 20 e.v. o...

detection of volatile compounds of medicinal plants with some nano-sorbents using modified or new methodologies and investigation of antioxidant activity of their methanolic extracts

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Polymer Modified Asphalt Emulsion

In road paving industry, asphalt emulsion is used for cold mix application such as chip seal, slurry seal, microsurfacing, cold recycled mixture and etc. Asphalt emulsion has several advantages compared to normal asphalt such as eco-friendly, easy to handle at ambient temperature and energy saving material because it does not need any heating process in its application. The history of asphalt e...

Palladium-Catalyzed Synthesis of 2,3-Disubstituted Benzofurans: An Approach Towards the Synthesis of Deuterium Labeled Compounds

Palladium-catalyzed oxidative annulations between phenols and alkenylcarboxylic acids produced a library of benzofuran compounds. Depending on the nature of the substitution of the phenol precursor, either 2,3-dialkylbenzofurans or 2-alkyl-3-methylene-2,3-dihydrobenzofurans can be synthesized with excellent regioselectivity. Reactions between conjugated 5-phenylpenta-2,4-dienoic acids and pheno...

Reviving Deuterium - Labeled Tags for Quantitative Proteomics