DETERMINATION OF HYDROGEN ION CONCENTRATION OF SOILS BY THE QUINHYDRONE METHOD

Determination of hydrogen ion concentrations in phosphate and borate mixtures by means of the quinhydrone electrodes.

THE application of the quinhydrone electrode (or the quinoquinhydrone electrode or the hydroquinhydrone electrode) as substitute for the hydrogen electrode for the determination of PH is based on the fact that the values of the potentials between one of these electrodes and the hydrogen electrode vary but very little if the electrolytes of the two electrodes of the chain examined are identical....

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...

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

A Colour Chart for the Determination of Hydrogen-Ion Concentration

Determination of absolute hydrogen peroxide concentration by spectrophotometric method

There is considerable current interest in oxidative stress applicable to humans. One important reactive oxygen species generated in the body is H2O2. It was reported that substantial amount of H2O2 was excreted in urine, even in neonates. Therefore, it was hypothesized earlier that measurement of H2O2, especially in urine, could be a valuable biomarker for the generation of H2O2 and the degree ...