نتایج جستجو برای: chemical operation
تعداد نتایج: 584268 فیلتر نتایج به سال:
This study was conducted for determination of antibacterial effect of Echinometra mathaei extraction on human disease bacteria. Samples were collected in Abu Mosa Island. Extraction operation was done by shell, spines, gonad and aristotle's lantern. Ethyl acetate, n-hexane and methanol were used for extraction operation respectively. Extraction effect of these organs was investigated on Vibrio ...
In this review, we provide an overview of our work in resistive switching mechanisms on oxide-based resistance random access memory (RRAM) devices. Based on the investigation of physical and chemical mechanisms, we focus on its materials, device structures, and treatment methods so as to provide an in-depth perspective of state-of-the-art oxide-based RRAM. The critical voltage and constant reac...
The continuous improvement of EAF performance is crucial for the increase in productivity and cost effectiveness and to render an environmental friendly process. RHI supports these targets by providing a diverse range of refractory and process solutions. Chemical energy in practical operation by injection of gaseous media like oxygen and natural gas, and solid materials like carbon have become ...
CO2 miscible displacement is not feasible in many oil fields due to high reservoir temperature as higher pressure is required to achieve miscibility. The miscibility pressure is far higher than the formation fracture pressure making it impossible to have CO2 miscible displacement. However, by using oleophilic chemicals, minimum miscibility pressure (MMP) could be lowered. The main objective of ...
فلز وانادیوم به دلیل دارا بودن خواص ویژه، کاربرد وسیعی در صنایع از جمله فولادسازی دارد. از آنجائیکه به صورت خالص در طبیعت یافت نمی شود، بازیابی آن از مواد و ترکیبات مختلفی انجام می شود و در این میان استخراج حلالی به عنوان یک روش موثر در بالا بردن خلوص وانادیوم حاصل از فرایند لیچینگ مطرح است. به این منظور از حلال آلی toa به همراه اصلاح کننده اکتانول استفاده شد. در این روش ابتدا حلال آلی استخراج ...
Membranes have emerged as an attractive approach to separating materials in many industries, from medical to chemical to water. When formed into hollow fiber tubes, membranes deliver highly efficient operation in a small footprint. The advantages are numerous: low energy requirements, simplicity of operation, and high specificity. This paper explains the principles behind membrane transport and...
AURORA1 is an autonomous wheeled mobile robot designed for automatic greenhouse operations, without the physical presence of a human operator or supervisor. Its aim is to perform purposeful operations in its particular working environment, which means it must integrate a variety of components for autonomous navigation and operation, and to support remote human supervision and teleoperation. Alt...
The aim of the CHEM project is to develop and implement advanced Decision Support Systems (DSS) for process monitoring, data and event analysis, and operation support in industrial processes. These systems are synergistic integration of innovative software tools, which improve the safety, product quality and operation reliability as well as reduce the economic losses due to faulty states, mainl...
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