Results 21 to 30 of about 277,381 (319)

Detectability of testosterone esters and estradiol benzoate in bovine hair and plasma following pour-on treatment [PDF]

, 2009
The abuse of synthetic esters of natural steroids such as testosterone and estradiol in cattle fattening and sports is hard to detect via routine urine testing. The esters are rapidly hydrolysed in vivo into substances which are also endogenously present
Blokland, M.H., Becker, C., C. Becker, Nielen, M.W.F., Lasaroms, J.J.P., I. Riedmaier, H. H. D. Meyer, Riedmaier, I., A. W. J. M. Nijrolder, Stolker, A.A.M., Meyer, H.H.D., M. J. Groot, J. J. P. Lasaroms, M. H. Blokland, Groot, M.J., Nijrolder, A.W.J.M., M. W. F. Nielen, A. A. M. Stolker   +17 more
core   +1 more source

Microemulsions of Nonionic Surfactant with Water and Various Homologous Esters: Preparation, Phase Transitions, Physical Property Measurements, and Application for Extraction of Tricyclic Antidepressant Drugs from Aqueous Media

Nanomaterials, 2023
Microemulsions are nanocolloidal systems composed of water, an oil, and a surfactant, sometimes with an additional co-surfactant, which have found a wide range of practical applications, including the extractive removal of contaminants from polluted ...
Radu C. Racovita, Maria D. Ciuca, Daniela Catana, Cezar Comanescu, Oana Ciocirlan   +4 more
doaj   +1 more source

Highly Diastereo- and Enantioselective Allylboration of Aldehydes using alpha-Substituted Allyl/Crotyl Pinacol Boronic Esters via in Situ Generated Borinic Esters [PDF]

, 2013
Readily available, alpha-substituted allyl/crotyl pinacol boronic esters often give low E/Z selectivity (with Z favored) in reactions with aldehydes. We found that addition of nBuLi to the pinacol boronic ester followed by trapping of the alkoxide with ...
Jack L.‐Y. Chen, Aggarwal, Varinder K., Chen, Jack L. -Y., Scott, Helen K., Christine L. Willis, Willis, Christine L., Helen K. Scott, Hesse, Matthew J., Matthew J. Hesse, Jack L.-Y. Chen, Varinder K. Aggarwal   +10 more
core   +1 more source

Direct conversion of methane to formaldehyde and CO on B2O3 catalysts

Nature Communications, 2020
Partial oxidation of methane to value-added C1 products remains challenging due to the favorable formation of fully-oxidized CO2. Here, the authors show supported B2O3 catalysts with tri-coordinated BO3 units as the active site are highly selective in ...
Jinshu Tian, Jiangqiao Tan, Zhaoxia Zhang, Peijie Han, Min Yin, Shaolong Wan, Jingdong Lin, Shuai Wang, Yong Wang   +8 more
doaj   +1 more source

Saccharomyces bayanus Enhances Volatile Profile of Apple Brandies

Molecules, 2020
Qualitative and quantitative profiles of volatiles in alcoholic beverages depend mainly on the quality of raw materials, yeasts used for fermentation, and processing technique.
Magdalena Januszek, Paweł Satora, Łukasz Wajda, Tomasz Tarko   +3 more
doaj   +1 more source

Plant Fibers in Comparison with Other Fining Agents for the Reduction of Pesticide Residues and the Effect on the Volatile Profile of Austrian White and Red Wines

Applied Sciences, 2021
Pesticide residues in Austrian wines have so far been poorly documented. In 250 wines, 33 grape musts and 45 musts in fermentation, no limit values were exceeded, but in some cases high levels (>0.100 mg/L) of single residues were found, meaning that a ...
Christian Philipp, Phillip Eder, Moritz Hartmann, Elsa Patzl-Fischerleitner, Reinhard Eder   +4 more
doaj   +1 more source

The estrogenic activity of phthalate esters in vitro [PDF]

, 1997
A large number of phthalate esters were screened for estrogenic activity using a recombinant yeast screen. a selection of these was also tested for mitogenic effect on estrogen-responsive human breast cancer cells.
P Henttu, Sumpter, JP, Parker, MG, J P Sumpter, Henttu, P, C A Harris, M G Parker, Harris, CA   +7 more
core   +1 more source

Effect of Aging Vessel (Clay-Tinaja versus Oak Barrel) on the Volatile Composition, Descriptive Sensory Profile, and Consumer Acceptance of Red Wine

Beverages, 2021
Consumers look for unique wines, offering pleasant experiences. Wine producers need to open new markets and are targeting countries with fewer traditions in drinking red and complex wines, such as Poland, Russia and Germany. The use of less popular aging
Hanán Issa-Issa, Leontina Lipan, Marina Cano-Lamadrid, Agnieszka Nemś, Mireia Corell, Pablo Calatayud-García, Ángel A. Carbonell-Barrachina, David López-Lluch   +7 more
doaj   +1 more source

Fatty Acid Methyl Esters as Biosolvents of Epoxy Resins: A Physicochemical Study [PDF]

, 2007
The C8 to C18 fatty acid methyl esters (FAME) have been compared as solvents for two epoxy resin pre-polymers, bisphenol A diglycidyl ether (DGEBA) and triglycidyl paminophenol ether (TGPA).
Thiebaud-Roux, Sophie, Lacaze-Dufaure, Corinne, De Caro, Pascale, Medina-Gonzalez, Yaocihuatl   +3 more
core   +1 more source

Modeling and Prediction of Coal Ash Fusion Temperature based on BP Neural Network

MATEC Web of Conferences, 2016
Coal ash is the residual generated from combustion of coal. The ash fusion temperature (AFT) of coal gives detail information on the suitability of a coal source for gasification procedures, and specifically to which extent ash agglomeration or ...
Miao Suzhen, Jiang Qingyin, Zhou Hua, Shi Jia, Cao Zhikai   +4 more
doaj   +1 more source