Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Hirohumi Hirata"'
Publikováno v:
Journal of Cataract and Refractive Surgery. 25:622-625
This method uses pig eyes filled with cooked chestnuts serving as pseudonuclei with the goal of teaching dividing techniques of phacoemulsification and aspiration. The pseudonuclei simulate the various degrees of human lens nuclear sclerosis. The che
Publikováno v:
Journal of Japan Oil Chemists' Society. 33:290-293
Reverse phase HPLC of various fatty acid esters has been studied using 050% H2O-MeOH as eluent. The esters were detected at 200210nm. The plots of log (corrected retention volume : V) vs. carbon numbers (CNs) of acid and alcohol residues in saturated
Autor:
Hirohumi Hirata
Publikováno v:
Journal of Japan Oil Chemists' Society. 33:821-828
Autor:
Hirohumi Hirata, Kazuo Fukuzumi
Publikováno v:
Journal of Japan Oil Chemists' Society. 25:207-211
Hydrogen deuterium exchange reaction of 2-methylpyridine has been studied by using several fatty acids as catalysts. The reaction was carried out in a sealed pyrex tube at 120°C, and the contents of the products were determined by mass spectrometry.
Publikováno v:
Journal of Japan Oil Chemists' Society. 34:178-183
A comvenient method for the preparation of N-acyl O-TMS derivatives of sphingolipid bases is described; i.e., O-TMS derivatives of the bases, which are obtained by the HMDS+TMCS / pyridine treatment, are reacted with acid anhydride to give the desire
Publikováno v:
Journal of Japan Oil Chemists' Society. 29:572-579
Three 2-amino-1, 3-alkanediols (alkane : decane, dodecane, and tetradecane) (4) were synthesized by the catalytic reduction of sodium salts of aci-2-nitro-1, 3-alkanediols, (3), in the presence of 5% Pd-C in glacial acetic acid at 40°C in good yield
Publikováno v:
Journal of Japan Oil Chemists' Society. 33:11-19
Analyses of free fatty acids (saturated, branched and unsaturated) by reverse phase high-performance liquid chromatography have been studied at low wavelengths (196220nm) by using a variabe wavelength UV detector, and aqueous methanol containing 0.1%
Publikováno v:
Journal of Japan Oil Chemists' Society. 27:773-777
Hydrogen-deuterium exchange of 4-methylpyridine (1b) has been studied by using fatty acid RCO2H (R=C1C10) as a catalyst in D2O at 120°C. The reaction mixture is homogeneous in the case of R=C1C3, and heterogeneous with R=C4C10. The conversion (or co
Autor:
Kazuo Fukuzumi, Hirohumi Hirata
Publikováno v:
Journal of Japan Oil Chemists' Society. 25:281-286
Hydrogen-deuterium exchange reaction of 2-methylpyridine has been studied by using several carboxylic acids as a catalyst in deuterium oxide. The reaction was carried out in a sealed pyrex tube at 120°C, and the contents of the product were determin
Publikováno v:
Journal of Japan Oil Chemists' Society. 29:336-340