Претраживање
Приказ резултата 21-30 од 117
Influence of Hydrolysis on the Osmotic Coefficients of the System {yZnCl(2) + (1-y)ZnSO4}(aq) at Temperature 298.15 K
(Amer Chemical Soc, Washington, 2009)
Isopiestic vapor pressure measurements were made for {yZnCl(2) + (1 - y)ZnSO4}(aq) solutions with ZnCl2 ionic strength fractions of y = (0.2640, 0.5042, 0.7533, and 1) at the temperature 298.15 K, using KCl(aq) as the ...
Behavior of silicon carbide/cordierite composite material after cyclic thermal shock
(Elsevier Sci Ltd, Oxford, 2009)
In the present work Mg-exchanged zeolite and silicon carbide were used as starting materials for obtaining cordierite/SiC composite ceramics with weight ratio 30:70. Samples were exposed to the water quench test from 950 ...
An empirical equation for temperature and pressure dependence of liquid heat capacity
(Elsevier, Amsterdam, 2009)
A new empirical equation for liquid heat capacity calculation, as a function of temperature and pressure is recommended. This four-parameter equation was tested and compared to the four-parameter equation developed by ...
Biosorption of heavy metal ions from aqueous solutions by short hemp fibers: Effect of chemical composition
(Elsevier Science Bv, Amsterdam, 2009)
Sorption potential of waste short hemp fibers for Pb2+, Cd2+ and Zn2+ ions from aqueous media was explored. In order to assess the influence of hemp fiber chemical composition on their heavy metals sorption potential, ...
Experimental research of characteristics of shock absorbers of impact energy of passenger coaches
(Experimental Techniques, 2009)
Citrate-based zinc-polyaniline secondary cell: part I: optimization of the citrate/chloride electrolyte
(Springer, Dordrecht, 2009)
Electrochemical behavior of zinc and thin polyaniline (PANI) electrodes in citrate/chloride-contained electrolyte has been investigated by the means of electrolyte composition optimization. Electrolyte contained 0.8 M ...
Determination of selected pesticides in fruit juices by matrix solid-phase dispersion and liquid chromatography-tandem mass spectrometry
(Elsevier Sci Ltd, Oxford, 2009)
A rapid and sensitive liquid chromatography-tandem mass spectrometry method has been developed for the analysis of acephate, monocrotophos, carbendazim, acetamiprid, dimethoate, simazine, carbofuran, atrazine, diuron, DNOC ...
The irritative property of α-tricalcium phosphate to the rabbit skin
(General Physiol And Biophysics, Bratislava, 2009)
The aim of this study was to assess the irritant properties of a new developed calcium phosphate ceramic, α-tricalcium phosphate (α-TCP) after single application to intact skin of the rabbit. The test substance, α-TCP was ...
Electrochemical polymerization and initial corrosion properties of polyaniline-benzoate film on aluminum
(Elsevier Science Sa, Lausanne, 2009)
Electrochemical synthesis of polyaniline (PANI) on aluminum electrode from aqueous Solution Of 0.25 mol dm(-3) aniline and 0.2 mol dm(-3) sodium benzoate has been investigated under potentiodynamic and galvanostatic ...
Non-isothermal crystallization of k2o center dot tio2 center dot 3geo(2) glass
(Springer, Dordrecht, 2009)
The crystallization of K2O center dot TiO2 center dot 3GeO(2) glass under non-isothermal condition was studied. In powdered glass with particle sizes less than 0.15 mm, surface crystallization was dominant and an activation ...