نتایج جستجو برای: in vitro corrosion
تعداد نتایج: 16989351 فیلتر نتایج به سال:
The current essay analyzes the anti-corrosion properties of epoxy primers including anti-corrosion pigment calcium hydrogen orthophosphate and hydrophobic nano silica with various percentages optimized by Taguchi experimental design. The impact of influential factors such as the percentage of anti-corrosion pigments, percentage of nano silica and pigment to binder ratio on anti-corrosion proper...
این پژوهش به منظور تعیین ترکیبات شیمیایی و قابلیت هضم علف اویارسلام سیلو شده (cyperus rotundus) در منطقه سیستان به همراه ملاس و اوره در سطوح مختلف به روشهای in situ و in vitro انجام خواهد شد. سپس اندازه گیری قابلیت هضم ماده خشک و ماده آلی گونه های گیاهی با تکنیک های تولید گاز (1988،menke و stingass ) و نایلون بگ (1980،?rscov) و تعیین ترکیبات شیمیایی( dm1،om2،ash ،adf3،ndf4، ee5، cp6) برای هر گو...
چکیده این پژوهش به منظور بررسی تغییرات ترکیبات شیمیایی و ارزش غذایی سیلوی علوفه سورگوم با افزودن آنزیم روابیو، اوره و ترکیب این دو به روش in vitro و in situ انجام شد. بدین منظور علوفه سورگوم در مرحله شیری بودن دانه ها در خرداد ماه برداشت و جهت سیلو نمودن به قطعات 4-2 سانتی متری خرد گردید. سپس با استفاده از مولتی آنزیم ( صفر، 3 و 6 گرم به ازای هر کیلوگرم ماده خشک)، اوره (صفر، 5 و 10 درصد به ازا...
For concrete bridge projects in marine environments, attention must be paid to the reinforcement corrosion problems caused by chloride intrusion. As kinds of functional admixtures, which can reduce the reinforcement corrosion rate, corrosion inhibitors are becoming very popular in China in new bridge projects. Corrosion inhibitors cover both inorganic and organic inhibitors. Nitrite is represen...
The corrosion protection factor (c.p.f.) and the corrosion condition (cc.) are simple instruments for the study and evaluation of the contribution and efficiency of several methods of corrosion prevention and control. The application of c.p.f. and cc. to corrosion and prevention in agriculture in The Netherlands is considered in detail. Attention is paid to relations between c.p.f. and c.c., th...
The corrosion of steel reinforcement in an aging highway infrastructure is a major problem currently facing the transportation engineering community, in particular bridge engineers. In the United States, maintenance and replacement costs are measured in billions of dollars. Further, the use of deicing salts has resulted in steady deterioration of bridge decks due to corrosion. These concerns ha...
Background and Objectives: One of the major problems of water utilization scaling and corrosion, which is a physical and chemical reaction between a metal and its environment is done and leads to material changes its properties. In this study corrosion and scaling index gained for malekshahi city's drinking water supply. Materials and Methods: The desired parameters in accordance with the st...
This study was conducted to evaluate the biocompatibility of titanium-nickel shape memory alloy used as a medical implant material. The authors carried out the following electrochemical corrosion test and in vivo and in vitro biological tests for the alloy and some metal and alloys clinically used previously to compare the intensities concerned with the biological reactions, that is, (1) anodic...
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