Thin-layer studies on surface functionalization of polyetherimide: Hydrolysis versus amidation

Unidimensional Thin Layer Chromatography of Salicylic Acid Derivatives on Boric Acid-Impregnated Plates in Drugs Studies

A unidimensional Thin Layer Chromatography system for the separation of salicylic acid and its derivatives (sulfosalicylic acid and Aspirin) has been developed. The separation was successfully using a solvent system of chloroform-methanol-water-ammonium hydroxide 120:75:6:2 (V/V) as mobile phase on TLC plates impregnated with boric acid. The method is based on different behavior of investigated...

the effect of explicit versus implicit error correction on writing of iranian intermediate efl learners

در این پایان نامه دو روش اصلاح اشتباهات نوشتاری زبان آموزان بزرگسال ایرانی در سطح متوسط مورد بررسی قرار می گیرد. در روش اول (explicit) اشتباهات بطور مستقیم و در روش دوم (implicit) اشتباهات بصورت غیر مستقیم اصلاح می شود. برای انجام این تحقیق از دو گروه 15 نفری استفاده شده است. به زبان آموزان در هر جلسه یک موضوع انشا داده شده است. این کار در 15 هفته (15 جلسه) تکرار شده است. مقایسه نتایج این آزمون...

unidimensional thin layer chromatography of salicylic acid derivatives on boric acid-impregnated plates in drugs studies

Atomic imaging and modeling of H2O2(g) surface passivation, functionalization, and atomic layer deposition nucleation on the Ge(100) surface.

Passivation, functionalization, and atomic layer deposition nucleation via H2O2(g) and trimethylaluminum (TMA) dosing was studied on the clean Ge(100) surface at the atomic level using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). Chemical analysis of the surface was performed using x-ray photoelectron spectroscopy, while the bonding of the precursors to the sub...

immunofixation on Thin-Layer Agarose

Na2CO3. After 1 mm, 1.0mL of alkaline picrate reagent (500 mL saturated picric acid, 100 mL of 1 mol/L NaOH, and 1 mL of Triton X-100 per liter) is added. The absorbance change at 505 nm and 37 #{176}C is measured between 48 s and 7 mm after adding the picrate reagent. Under these conditions, samples of pooled sera from jaundiced patients showed negative interference, 35 mg of total bilirubin p...