منابع مشابه
Extraction of fir wood oil from fir wood waste and synthesis of Cedar series perfumes
Cedar wood oil is ranked the tenth essential oil in the world, it can be obtained from fir wood waste, and high added value Cedar series perfumes are obtained from Cedar wood oil by chemical processing. Their aroma is very unique and cannot be replaced. At present, the cedar wood resources are dwindling; a serious influence had taken place in the flavor and fragrance industry. Study found that ...
متن کاملIsolation and identification of an isomer of β-sitosterol by HPLC and GC-MS
Phytosterols are a group of steroids alcohols which had been regarded as a functional factor. An unknown compound in phytosterol samples and phytosterol standard samples was detected by HPLC using symmetry C18 column. The quantity of the compound was increased with the enrichment of β-sitosterol. After being collected and analyzed by GC-MS and compared with standard diagram from Wiley and Nist ...
متن کاملIsomer Test of DFT: Chlorofluoroethenes
DFT calculations have been performed for all isomeric chlorofluoroethenes. The relative stabilities of different isomers have been calculated and compared with experimental enthalpies of formation. The DFT method, which uses the non-local density approximation (NLDA) and Becke-Lee-Yang-Parr functional, has been found to be a fairly reliable method for predicting relative thermodynamic stabilities.
متن کاملIsomer spectroscopy of 127 Cd
F. Naqvi,1,2,* M. Górska,2 L. Cáceres,2,3,† A. Jungclaus,4 M. Pfützner,5 H. Grawe,2 F. Nowacki,6 K. Sieja,6 S. Pietri,7,‡ E. Werner-Malento,5,§ P. H. Regan,7 D. Rudolf,8 Z. Podolyák,7 J. Jolie,1 K. Andgren,9 T. Beck,2 P. Bednarczyk,2,10 J. Benlliure,11 G. Benzoni,12 A. M. Bruce,13 E. Casarejos,11,‖ B. Cederwall,9 F. C. L. Crespi,12,14 P. Detistov,15,¶ Zs. Dombrádi,16 P. Doornenbal,2,** H. Geiss...
متن کاملIsomer-resolved ion spectroscopy.
We demonstrate the isomer-resolved spectroscopy of gas-phase ions, with different geometries separated prior to spectroscopic probe using ion mobility techniques. Specifically, ring and chain isomers of carbon cluster anions with 10;-12 atoms have been separated by ion mobility/mass spectrometry and examined by photoelectron spectroscopy. This methodology should also apply to other ion spectros...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1958
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.79.1207