نتایج جستجو برای: basf
تعداد نتایج: 288 فیلتر نتایج به سال:
(−)-Menthol is one of the most popular aroma compounds worldwide. While in past mostly extracted from mint plants, today (−)-menthol synthesis other raw materials becoming more relevant. Common starting for menthol are m-cresol, citral and myrcene, but also substrates like menthone, mono- bicyclic terpenes terpenoids have been used this purpose past. As many applications high purity required, a...
Food for Thought ... Read-Across Approaches – Misconceptions, Promises and Challenges Ahead Grace Patlewicz , Nicholas Ball , Richard A. Becker , Ewan D. Booth , Mark T. D. Cronin , Dinant Kroese , David Steup , Ben van Ravenzwaay 8 and Thomas Hartung 9 1 DuPont Haskell Global Centers for Health and Environmental Sciences, Newark, DE, USA; 2 Toxicology & Environmental Research and Consulting (T...
For decades, automotive coatings have experienced degradation in the form of etching on coatings exposed to acid rain. As a result, procedures were developed to simulate and accelerate this type of degradation. These procedures failed to accurately simulate the etch produced in the product’s service environment because they lacked the critical field components necessary to reproduce this type o...
استیک اسید با کاربردهای فراوان همواره مورد توجه بوده است. در سالهای دور ترکیباتی مانند اتیلن، اتین، بوتان و پنتان برای تهیه استیک اسید استفاده میشد. کمپانی BASF برای اولین بار از گاز طبیعی (متان) به عنوان پیش مادهی تهیهی استیک اسید استفاده کرد. اما برای استفاده از متان به عنوان پیش ماده هزینه بالایی صرف می شد. بنابراین سنتز مستقیم استیک اسید به عنوان هدف نهایی تعریف گردید. شرکت Mobil توان...
N. L. Vaklev, Dr. B. V. O. Muir, Dr. D. T. James, Dr. J.-S. Kim, Dr. A. J. Campbell Experimental Solid State Group and the Centre for Plastic Electronics Department of Physics Blackett Laboratory, South Kensington Campus Imperial College London , London SW7 2AZ , UK E-mail: [email protected] Dr. B. V. O. Muir, Dr. J. H. G. Steinke Department of Chemistry RCS1, South Kensington Ca...
The lipid composition of Avena sativa stem segments was manipulated using BASF 13-338 (formerly Sandoz 9785) and growth temperature, in order to establish whether there were correlations between responsiveness of the tissue to gibberellic acid (GA(3)) and the presence, before hormone treatment, of specific lipid components. High correlations were obtained between GA(3)-induced growth and total ...
In cooperation with: Susanne Brendler-Schwaab, Harald Enzmann, Ludwig Schladt, Toxicology Rodent Studies and Genetic Toxicology, Bayer AG, Wuppertal; Erhard Deml, Doris Oesterle, Institute of Toxicology of the National Research Center for Environment and Health, Neuherberg; Karin Küttler, Werner Mellert, Product Safety Regulations, Toxicology and Ecology, BASF AG, Ludwigshafen; Oliver Mönnikes,...
Spinand flavor-symmetry breaking corrections to decay constants of heavy mesons are analyzed in next-to-leading order in the l/m~ expansion. The general structure of these corrections is derived in an effective-field-theory approach. The subleading universal form factors, which parametrize the matrix elements of higher-dimensional operators in the effective theory, are estimated using QCD sum r...
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