The paper deals with evaluation of quality of electrolytic coating by statistical methods. Electrolytic solution was created by ZnCl2 within interval of 0,062 mol .l-1 to 1,01 mol.l-1, NaCl ranging from 7,01 mol.l-1 to 60,66 mol.l-1, H3BO3 ranging from 0,11 mol.l-1 to 0,89 mol.l-1. Physical conditions of the experiment are represented by the electrolyte temperature ranging from 3,78 °C to 43,78...

Magmatic-hydrothermal systems, especially those causing the formation of tungsten deposits, may be enriched in boron, as is suggested by presence hydrothermal tourmaline. This study examines boron and metal (including tungsten) concentrations quartz-hosted fluid inclusions Lened W-(Be) deposit Canadian Cordillera resolves (i) analytical challenges involved during salinity calculations B-rich fl...

The aim of this study was to verify the applicability Ohmic Model with variable ionic resistivity voltammetric zinc oxide growth on galvanized steel sheets, without chromate passivating film. Two kind sheets were studied: one produced from a bath molten containing antimony and other lead. Sb presented better performance against corrosion in comparison those Pb. electrochemical experiments perfo...

excessive vegetative growth may bring about improper pollination and consequently lead to reduced fruit set and misshapen fruits. paclobutrazol (pp333) reduces vegetative growth. on the other hand, balanced nutrient uptake at all developmental stages increases fruit quality and yield. an experiment was conducted with the aim of reducing vegetative growth and improving yield of strawberry, selva...

There are more than 230 boron minerals which contain different amounts of boron oxide (B2O3) percentages. Magnesium borates are one of the boron mineral groups that have important properties of high elasticity coefficient, resistance to corrosion and high heat resistance. In this study, magnesium borate production is studied by hydrothermal synthesis method from a sodium borate mineral of tinca...

Isolation of catecholamines on prepacked gravity-fed ion-exchange columns in conjunction with liquid-chromatographic separation is occasionally subject to disturbances of unknown origin, especially after injection of H3BO3 eluates from the ion-exchange columns onto the chromatography column. Peak spreading, sometimes even peak splitting, has been observed in many laboratories--effects easily co...

A thin Pd-Ag alloy film, which will be applied to fabricate membranes for hydrogen separation, was successfully deposited using an electroplating technique. The plating solution for the formation of a thin Ag-rich Ag-Pd film for electric contact consisted of PdCl2, AgNO3, HBr, and HNO2. An improvement of the electrolytic bath was achieved by a pH control, which was kept constant at 6.6 and by t...

Abstract: Nano-structural synthesized materials can be fabricated utilizing intensive milling after combustion synthesis. The Al2O3-TiB2 ceramic composite has been synthesized by aluminothermic reactions between Al, Ti (TiO2), and B (B2O3 or H3BO3). Boric acid (H3BO3) is less expensive than boron oxide, and after being dehydrated at 200°C, boron oxide will be obtained. In this study, Al, TiO2, ...