Abstract The extensive research and interest in dye-sensitized solar cells (DSSCs) due to their relatively low cost, simple preparation methodology, toxicity, comparable ease of production continues garner momentum over recent decades. This study explores the extraction purification dyes from different plant sources for cell applications. results obtained these extracts commonly serve societies...

Conventional treatment methods are used in the of drinking water to protect human and environmental health. These can be named aeration increase amount oxygen, precipitation, chemical treatment, filtration, chlorination for disinfection. Besides, iron manganese removal operations performed places where hardness is very high depending on geographical location, cases content high. Drinking, techn...

A method for the extraction of polyglycerolphosphate polymerase from Bacillus subtilis membranes is described. Further purification by ion-exchange chromatography yields an enzyme fraction totally dependent on the addition of a heat-stable factor for activity. This factor was isolated from cell membranes and acts as an acceptor of glycerolphosphate units. The acceptor contains glycerolphosphate...

We report a catalytic asymmetric reaction process that involves the use of solid-phase reagents and catalysts that constitute the packing of a series of "reaction columns". This process was applied to the catalytic asymmetric synthesis of beta-lactams, to yield pure products with excellent enantio- and diastereoselectivity. We have identified several advantages to conducting chemical reactions ...

The chemical synthesis of a series of mucin-type oligosaccharide fragments 1-7 containing an α-linked aminopropyl spacer ready for glycoarray attachment is reported. A highly convergent and stereoselective strategy that employs two different orthogonal protected galactosamine building blocks was used to access all of the targets. A tandem deprotection sequence, that did not require chromatograp...

The paper deals with the results of study on purification process used mineral and semi-synthetic motor oils in presence crystalline urea. effect main factors (the amount reagent, time, temperature) performance indicators purified was studied. Used for gasoline diesel engines were under established optimal conditions. X-ray-fluorescence IR-spectroscopic studies chemical composition urea are pre...

Abstract We study the holographic entanglement measures such as mutual information, HMI, and of purification, EoP, in a QCD model at finite temperature zero chemical potential. This can realize various types phase transitions including crossover, first order second transitions. use HMI EoP to probe structure this we find that critical they characterize model. Moreover obtain exponent using EoP.

Target identification of biologically active small-molecules is often the rate-determining step in forward chemical genetics. Photo-affinity labeling (PAL) represents a useful biochemical strategy for target identification in complex protein mixtures. This unit describes the use of alkyl diazirine-based photo-affinity probes and Cu(I)-catalyzed click chemistry to covalently label and visualize ...

Pt(acac)2, AgNO3, Cu(acac)2, Fe(acac)2, Pd(acac)2, RhCl3, Co(acac)2 poly(vinylpyrrolidone) (PVP; Mw 8000), were purchased from Alfa Aesar Co.Ltd, and Bi(NO3)2, KI, KBr, KCl, tris (hydroxymethyl ) aminomethane, HCHO solution (37 wt%), formamide, and acetone were purchased from Sinopharm Chemical Reagent Co. Ltd . All the chemicals were analytical grade and used as received without any purificati...

From meningococcus Type II broth autolysates, a substance, corresponding to the protective antibody has been isolated. This substance, termed kappa substance, is firmly connected with protein but can be separated by the action of proteolytic enzymes. Methods of preparation and purification are given, together with chemical and serological data. In whole cells from young cultures, this substance...