Determinations of Sulfanilamides by Thermometric Titrations

N4Methyl and N4Dimethyl Substituted Sulfanilamides

The purpose of this study was to determine whether acetylation of the sulfonamide drugs in the human body could be prevented by substituting a simple alkyl radicle on the amino group of the drug without otherwise impairing the efficiency of its therapeutic action. Methyl and dimethyl substituted sulfanilamides were made and investigated from a pharmacological and therapeutic viewpoint. Because ...

Nitrogen Determinations by Direct

All methods for the determination of urea in urine dependent on purely chemical processes for the hydrolysis of the urea are apparently destined to become antiquated, if not forgotten, because of the abundant supply of urease now available for such hydrolysis. It would be easy to devise an excellent direct Nesslerization method for the determination of urea in urine on the basis of the Folin-Pe...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

37l Coulometric Titrations

Notes 1. Alternatively, grease and organic materials can be removed by heating platinum electrodes to redness in a flame. Do not touch electrode surfaces with your fingers after cleaning because grease and oil cause nonadherent deposits that can flake off during washing and weighing. 2. Chloride ion must be totally excluded from this determination because it attacks the platinum anode during el...

Non aqueous titrations pdf