نتایج جستجو برای: carbon resourse

تعداد نتایج: 281245  

2011
Gina Peschel

Molecular binding behavior has a large in uence on the structure of a material and their properties. As a exclusion, carbon bind themself not in form of identical molecular orbitals but in form of hybridization. I explain the term hybridization and specify the in uence to the properties on the example of graphite and diamond. Furthermore, I present the change of properties by curvature e ects.

Journal: :journal of chemical health risks 0
abdul rashid n.a kopaieemalek s. yusof a.m.

nanotechnology is the study of manipulating matter on an atomic and molecular scale. generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension size from 1 to 100 nanometers .  carbon nanotubes have great potentials for novel applications in industry, drug delivery system and many other uses. in this work after purification, multiwa...

Journal: :acta medica iranica 0
seyed hassan emami-razavi brain and spinal cord injury research center, tehran university of medical sciences, tehran, iran. mahsa ghajarzadeh brain and spinal cord injury research center, tehran university of medical sciences, tehran, iran. sepehr aziz school of medicine, tehran university of medical sciences, tehran, iran. m. amirhossein keyvan school of medicine, tehran university of medical sciences, tehran, iran. s adeleh mirjafari brain and spinal cord injury research center, tehran university of medical sciences, tehran, iran. faezeh sodagari brain and spinal cord injury research center, tehran university of medical sciences, tehran, iran.

carbon monoxide (co) poisoning is still a health problem all over the world. informing users about symptoms and suggesting annual inspection of co producing devices will result in co poisoning reduction. the goal of this study was to evaluate awareness about co poisoning symptoms and its prevention ways in iranian population. in this study, a total of 700 patients' family members attended imam ...

Journal: :مدیریت خاک و تولید پایدار 0
وحیدرضا جلالی کرمان ابراهیم بابائیان عضو ستاد فناوری آب، فرسایش، خشکسالی و محیط زیست-معاونت علمی فناوری ریاست جمهوری

background and objectives: soil organic carbon is a main soil property and particularly important for development and sustainable management of agricultural systems. soil organic matter content, which is typically measured in the form of soil organic carbon soc content, is commonly regarded as a key indicator of soil quality and utilization (liu et al., 2015). the presence of som has been prove...

Mohammedi Rouzbahani, Maryam, Nikeghbali Sisakht, Nader, Sabzalipour, Sima,

Refineries produce about four percent of the global carbon dioxide emissions, close to one billion tons per year. Globally, the refining sector is the third largest producer of carbon dioxide after the electricity generation and cement industry.This greenhouse gases is a major cause of global warming and climate change and is a serious threat to human health and the environment. One way to redu...

In recent decades, climate change and global warming have become to one of the critical global challenges that have attracted the attention of researchers. Knowing the effects of climate change on soil carbon can be used as the best tools regarding to understand the soil carbon cycle, therefore, this study was carried out to investigate and compare the amount of carbon storage in different clim...

Sugarcane (Saccharum officinarum L.) is a multi-purpose crop, mainly planted in South-western (SW) parts of Iran. However, the capability of sugarcane farms to sequestrate carbon into soil and plant is not well documented. In this research, the carbon sequestration in sugarcane plant and soil in a ratooning traditional cultivation system at the Amirkabir Sugarcane Agro-Industry Complex...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1394

تحقیق حاضر، به طراحی، ساخت و سخت سازی پوشش نابازتابنده چندلایه بر بستره سولفید روی با استفاده از مواد ژرمانیوم و سولفید روی در بازه طول موجی ? تا ?? میکرومتر می پردازد. در قسمت اول، موادی که در این ناحیه طول موجی شفاف هستند بررسی شدند و ژرمانیوم و سولفید روی انتخاب شدند. بعد از انتخاب مواد، طراحی نرم افزاری با استفاده از نرم افزار مخصوص لایه های نازک مکلئود (macleod) انجام می شود. بعد از انجام ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1389

کلمات کلیدی: اکسیداسیون الکتروشیمیایی متانول – خمیر کربن – زوج ردوکس niii/niiii – الکترود اصلاح شده . کربن فعال شده ،nacl ، پتاسیم هیدروکسید، پایداری الکترود.

Malaysia, as a small and developing country, must reduce carbon emissions because the country is one of the top CO2-emitting countries in the ASEAN region. Therefore, the current study implements two environmental tax policies; carbon and energy taxes, in order to examine the impacts of these policies on the reduction of carbon emission in the whole of the economy by applying a compu...

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