نتایج جستجو برای: α naphthylamine
تعداد نتایج: 165263 فیلتر نتایج به سال:
Schiff base has been prepared by the condensation of 2-naphthylamine (NA) with 5bromosalicylaldehyde (BSA). The ligand (NABSA) was isolated and characterized. Metal complexes have been synthesized by the interaction of NABSA with metal ions viz. Co(II), Ni (II), and Cu(II) in 1:2 molar ratio respectively. These complexes have been characterized by FT-IR, electronic spectroscopy, conductance mea...
Biochemical studies of toxic agents. 2. The metabolism of 2-naphthylamine and 2-acetamidonaphthalene
A rapid and sensitive spectrophotometric method is proposed for the determination of Metronidazole and Secnidazole drugs. The method depends on the reduction of Metronidazole and Secnidazole molecules with zinc dust and hydrochloric acid followed by diazotization and coupling with α-naphthylamine to give red colored chromogens easily measured spectrophotometrically at λmax = 510 nm or coupling ...
آنزیم های α-آمیلاز کاربرد وسیعی در صنایع غذایی، داروسازی، نساجی و شوینده دارند. α-آمیلازهای تولیدشده توسط منابع میکروبی مختلف دارای خواص آنزیمی متفاوتی می باشند. آنزیم α-آمیلاز تولید شده توسط سویه bacillus sp.kr-8104 وابسته به یون کلسیم نمی باشد و همچنین بیشترین فعالیت آن درمحدوده ) ph6-4( گزارش شده است. با توجه به خواص ذکر شده، این آنزیم مورد توجه بسیاری از صنایع به ویژه صنعت نشاسته قرار دارد....
The association of aetiological agents incriminated for bladder cancer are well recognised. They are divided into two groups, occupational and non-occupational. The commonest occupational agents are 2-naphthylamine, benzidine, aminobiphenyl, dichlorobenzidine, orthodianisidine and orthotolidine. Recognised non-occupational agents include tobacco, recurrent chronic bladder infection/infestation,...
Jet oils are specialized synthetic oils used in high-performance jet engines. They have an appreciable hazard due to toxic ingredients, but are safe in use provided that maintenance personnel follow appropriate safety precautions and the oil stays in the engine. Aircraft engines that leak oil may expose others to the oils through uncontrolled exposure. Airplanes that use engines as a source of ...
Algal blooms have been increasing in prevalence all over the world, destroying ecosystems and placing other organisms at risk. Chemical remediation is one of most important methods of controlling algal bloom formation. The effects of copper sulfate, hydrogen peroxide (H(2)O(2)) and N-phenyl-2-naphthylamine on photosynthesis-related and microcystin-related gene transcription and physiological ch...
1. An enzyme (EC 2.8.2.1) that catalyses the transfer of sulphate from adenosine 3'-phosphate 5'-sulphatophosphate to phenols was purified approx. 2000-fold from male rat livers. 2. The purified preparation did not catalyse the sulphurylation of dehydroepiandrosterone, butan-1-ol, l-tyrosine methyl ester, 1-naphthylamine or serotonin. 3. At pH8.0 and 37 degrees C the K(m) values of the enzyme f...
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