نتایج جستجو برای: carbon

تعداد نتایج: 281206  

We present a general study on a high performance supercapacitor based on intercalated reduced graphene oxide with carbon black nanoparticles. Graphene oxide sheets were synthesized by oxidation and exfoliation of natural graphite and were reduced using hydroiodic acid in the presence of carbon black nanoparticles. Graphene paper was fabricated by one-step procedure via simultaneous reducing and...

Today, climate change and global warming caused by the emission of greenhouse gases is a big challenge to the world, especially in arid and semi-arid area. Afforestation is the most effective strategy to absorb carbon dioxide in terrestrial ecosystems and reduce global warming of the earth. The purpose of this study is to evaluate the effects of planting Eucalyptus camaldulensis and Amygdalus s...

In this research, two carbon structures silica nanohybrids Pickering emulsions were prepared. Graphite and activated carbon were carbon allotropes with different morphologies of laminar and spherical, respectively. The effect of carbon morphology investigated on the related silica nanohybrids Pickeringemulsions for C-EOR. Therefore, nanohybrids were prepared with graphite and activated carbon t...

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...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید