In this report we describe a unique case of tinea pedis. A 29-year-old man presented with a 3-day history of asymptomatic purpuric papules predominantly on his left foot. Potassium hydroxide preparation demonstrated fungal hyphae and culture yielded Trichophyton mentagrophytes. This patient presented unusually with purpuric papules, unlike the three commonly described types of tinea pedis. Give...

Improvements in the Zimmermann reaction are effected by using methanol as a solvent for the reagents employed in the reaction in place of ethanol or aqueous ethanol. The advantages are as follows. Considerably lower blanks are obtained; extraneous chromogens are negligible at the wavelength of measurement, so that no correction procedure or extraction process is required; high concentrations of...

In this letter, we investigate the fabrication of Silicon nanostructure patterned on lightly doped (10(15) cm(-3)) p-type silicon-on-insulator by atomic force microscope nanolithography technique. The local anodic oxidation followed by two wet etching steps, potassium hydroxide etching for silicon removal and hydrofluoric etching for oxide removal, are implemented to reach the structures. The i...

The manometric study of biological oxidations by the “direct method” of Warburg, when carried out in the presence of cyanide, involves the use of KOH-KCN mixtures (Krebs (4)) for the absorption of carbon dioxide. The following study describes the rate of distillation of HCN from the experimental solution under various conditions, and suggests a remedy for the difficulties occasionally encounter...

for the gas stream in the distillation unit. Coagulation of the beer samples, especially when running a large number of samples, can arise in the distillation unit. Coagulation interferes with the smooth flow of sample through the distillation unit and gives erratic results. Coagulation was prevented by mixing the sample with a M potassium hydroxide solution (Figure 2) before pumping it into th...

Disclosed is a mild, scalable, and chemoselective catalytic cross-dehydrogenative C-H bond functionalization protocol for the construction of C(sp)-Si bonds in a single step. The scope of the alkyne and hydrosilane partners is substantial, providing an entry point into various organosilane building blocks and additionally enabling the discovery of a number of novel synthetic strategies. Remarka...

IN the course of an investigation on glycogen, the solubility of a sample prepared in the usual way by boiling tissue with 60 % KOH was compared with that of a sample prepared from an aqueous extract of tissue dehydrated by alcohol, and it was observed that the former sample reached a stable value very much more rapidly than the latter. It was therefore decided to prepare glycogen from several ...

Nanoparticles of potassium tantalate (KTaO3) and potassium niobate (KNbO3) were synthesized by oxidation of metallic tantalum in molten potassium nitrate with the addition of potassium hydroxide. Magnetization curves obtained on these ferroelectric nanoparticles exhibit a weak ferromagnetism, while these compounds are nonmagnetic in a bulk. The experimental data are used as a start point for th...

The title compound, C(17)H(26)ClNO(5), was prepared via a tandem asymmetric Michael addition-elimination reaction of (5S)-3,4-dichloro-5-(l-menth-yloxy)furan-2(5H)--one and l-alanine in the presence of potassium hydroxide. The five-membered furan-one ring is approximately planar while the six-membered menth-yloxy ring adopts a chair conformation. The crystal packing is stabilized by inter-molec...

To the article “Pelletized Carbon Adsorbent Based on Petroleum Coke Activated by Potassium Hydroxide , ” P. V. Kugatov and B. S. Zhirnov, Vol. 56, No. 3, pp. 352-356, July, 2020