نتایج جستجو برای: instead of fossil fuels or mixed with them

تعداد نتایج: 22266578  

2004
Birgit Braun John R. Dorgan

In past several decades, extensive research has been performed regarding the possibilities of using renewable resources for the production of chemicals and fuels instead of fossil resources, which will eventually become rare and therefore expensive. Increasing the use of materials based on renewable resources for packaging and other applications not only holds significant advantages in economic...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان 1390

the space now known as complete erdos space ec was introduced by paul erdos in 1940 as the closed subspace of the hilbert space ?2 consisting of all vectors such that every coordinate is in the convergent sequence {0} ? { 1 n : n ? n}. in a solution to a problem posed by lex g. oversteegen we present simple and useful topological characterizations of ec. as an application we determine the ...

2016
Erik Budsberg Jordan T. Crawford Hannah Morgan Wei Shan Chin Renata Bura Rick Gustafson

BACKGROUND Bio-jet fuels compatible with current aviation infrastructure are needed as an alternative to petroleum-based jet fuel to lower greenhouse gas emissions and reduce dependence on fossil fuels. Cradle to grave life cycle analysis is used to investigate the global warming potential and fossil fuel use of converting poplar biomass to drop-in bio-jet fuel via a novel bioconversion platfor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده ادبیات و علوم انسانی 1392

when we return to the concept of poetry and the age-old discussion about the uselessness or the usefulness of the poets to the private and public state of human beings, originating from plato and aristotles views about poets respectively, there emerges the question of the role of poetry in human beings lives. in the same manner, with the advance of technology and the daily progress and improvem...

Masoud Yazdanpanah Nadejda Komendantova,

Currently Iran and Morocco are going through an energy transition. Ambitious plans exist at international, regional and national governance levels to deploy renewable energy sources (RES), such as concentrated solar power (CSP) and photovoltaic (PV) solar power. These plans foresee deployment of RES to cover local growing energy needs, to diversify energy supply and to benefit from electricity ...

Journal: :Geology, Geophysics & Environment 2016

2012
David C. Holzman

A former Republican congressman from South Carolina has started an institution to promote conservative approaches to mitigating climate change and achieving energy security for the United States. According to Bob Inglis, whose Energy and Enterprise Initiative is housed within George Mason University, market distortions lead Americans to use far more fossil fuels than they would if they paid the...

2010
S. Kukić Daria Jovičić

Exploitation of fossil fuels such as lignite, brown coal, crude oil and natural gas comes from the oxidation of carbon stored over millions of years in the Earth’s crust; the combustible energy when released in the atmosphere emits carbon dioxide (CO2). Increased concentration of CO2 in the atmosphere causes global warming, because it is a greenhouse gas. Fossil fuels are limited and concentrat...

Shortage of electric power is a serious issue for production, especially for those that rely more on electricity. In this paper, we investigate the effect of non-distributed electricity (blackout) on Iranian industry. The sources are derived from two undistributed energy data collected from 39 distribution companies and database of industrial plants. The final panel data is from industrial plan...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید