As the global energy crisis continues, efficient hydrogen production is one of hottest topics these days. In this sense, establishing catalytic trends for essential choosing proper H2 generation technology and material. Volcano plots evolution in acidic media are well-known, while a volcano plot alkaline was constructed ten years ago using theoretically calculated binding energies. Here, first ...

This paper describes the development of Standard Reference Material, SRM 2694, "Simulated Rainwater," intended to aid in the analysis of acidic rainfall. Details of the formulation and preparation of the two levels of solutions (2694-1 and 2694-11) are given. The 10 analytical techniques used to measure the 12 components in the solutions are described in brief. The data used in the statistical ...

background & aims of the study: p-chloronitrobenzene is a benzoic compound that widely used in many chemical industrials. p-chloronitrobenzene may be absorbed through the skin and is suspected to causing cancer. so, developing an easy method to remove of it from the environment is necessary. equilibrium isotherms and adsorption kinetics of p-chloronitrobenzene onto modified silk waste were stud...

The phenomenon of copigmentation is due to molecular associations between pigments and other (usually noncolored) organic molecules in solution. These associations cause the pigments to exhibit far greater color than would be expected from their concentration. The phenomenon has long been recognized in flowers and fruits. Willstatter and Zollinger [122,123] noted the intensification of color on...

The chromatin acidic proteins have been isolated from rat liver by dissociation of the deoxyribonucleoprotein complex. These proteins are freely soluble in buffer solutions, are heterogeneous, contain deoxyribonucleic and ribonucleic acids, and are separable into four main fractions. The isolated chromatin acidic proteins form complexes with whole histone as well as with DNA. When they are incu...

Waste water treatment reservoirs are contaminated with many hazardous chemicals and acids. Reservoirs typically comprise concrete and reinforcement steel bars, and the main elements responsible for their deterioration are hazardous chemicals, acids, and ozone. Currently, a variety of techniques are being used to protect reservoirs from exposure to these elements. The most widely used techniques...

supergene oxidation-leaching and secondary sulfide enrichment in the sarcheshmeh porphyry cu-mo deposit generated a supergene profile to depths of 20 to 80 meters with oxide ore reserve about 22 mt. @1.08% cu and sulfides ore [email protected]% cu. geochemical distribution and behavior of trace metals associated with cu namely mo, au, and ag in the supergene profile of the sarcheshmeh were po...

The MWCNTs-COOH Paste Electrode (MCPE) was successfully used to study the electrochemical behavior of temozolomide in 0.2 M H2SO4 solution, phosphate buffer solution (0.1M PBS, pH 7.4) and 0.1M NaOH solution by Cyclic Voltammetry (CV) technique. The results exhibit that MCPE can remarkably enhance sensing and electrocatalytic activity towards the oxidation and reductio...