نتایج جستجو برای: 50 and 60c
تعداد نتایج: 16882755 فیلتر نتایج به سال:
This paper presents a comparative study of the thermal, mechanical, chemical and surface properties of the biodegradable polymer polylactic acid (PLA) and the petroleum based polymer polyethylene terephthalate (PET). The study shows how the material properties of these two polymers influence the processing conditions used during manufacture. The polymer properties were compared using differenti...
Salmonellosis is one of the most important bacterial diseases with economic concern to all phases of the poultry. The study was aimed to generate chicken IgY against Salmonella typhimurium and its physicochemical characterization to unbolt the obstacles for the usage of IgY as therapeutic agent in Poultry. Salmonella typhimurium whole cell antigen was prepared and immunized in white leghorn chi...
a bstra ct background: e-learning can increase knowledge in patients and provide an efficient way to enhance the personnel–patient interaction as well as patient - specific education materials. so, the aim of this study was to compare the effects of two methods, multimedia and illustrated booklet educational method, on primigravida women’s knowledge of prenatal care. results: before train...
Fatty acid and triglyceride synthesis is induced in response to feeding and insulin. This lipogenic induction involves coordinate transcriptional activation of lipogenic enzymes, including fatty acid synthase and glycerol-3-phosphate acyltransferase. We recently reported the importance of USF-1 phosphorylation and subsequent acetylation in insulin-induced lipogenic gene activation. Here, we sho...
Ion-associate complexes of Itopride hydrochloride with zinc(II) thiocyanate, sodium cobaltinitrite and ammonium reineckate are precipitated. The solubility of the ion associates at the optimum pH and ionic strength values have been examined. Saturated solutions were prepared at different temperatures ( 25 – 60C ) under the optimum precipitation conditions and the metal ion contents ( zinc, chro...
introduction: biological effects of magnetic fields have been investigated by scientists for many years and a vast amount of research using different frequencies and intensities have been performed on humans and laboratory animals. the results of these studies, which have mostly been done by applying high frequencies, have shown that electromagnetic fields are effective on structure and functio...
A laboratory-scale evacuated tube solar collector (ETSCs) has been developed and tested for unloading conditions in Lanzhou, China. clear sky cloudy have tested. Heat is generally considered instantaneous because it a function of multiple factors, like ambient temperature radiation. The results show day with maximum average value temperature, outlet, inlet, radiation 12 -60C, 56 310C, 69 340C, ...
Acid and enzymatic hydrolysis of cassava starch to glucose (fermentable sugar) were investigated and compared. And the effects of acid concentration, pH, temperature and time on the yield of glucose were studied. Experiments were carried out at a temperature range of (60 – 100)C between 30 minutes and 4 hours. (0.2 – 1.0)M strength of H2SO4 acid was used and pH values range of 4 – 7 was conside...
The decomposition of hydrogen peroxide catalyzed by mixed ligand cobalt (II) and nickel (II) complexes as heterogeneous catalysts and adsorbate on alumina has been investigated by measuring the evolution of oxygen at different time intervals between 35-60C. The effect of variation in the concentration of hydrogen peroxide and in the quantity of catalysts on the extent of disproportionation has ...
Superheated drops are known to vaporise when exposed to energetic nuclear radiation since the discovery of bubble chamber. The application of superheated drops in neutron research specially in neutron dosimetry is a subject of intense research for quite sometime. As the degree of superheat increases in a given liquid, less and less energetic neutrons are required to cause nucleation. This prope...
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