نتایج جستجو برای: energy and transportation
تعداد نتایج: 16939988 فیلتر نتایج به سال:
Background and Aim: Carbon footprint is an important health, safety and environmental issue that has received much attention by many researchers and studied during the last decade. This research was conducted to assess the carbon footprint and investigate the relationship between carbon dioxide emissions released in the atmosphere and energy consumption in Yadavaran oil field, Iran in 1396. Ma...
With the Internet of things and various information communication technologies, a city can manage its assets in smarter way, constituting urban development vision smart [...]
in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...
Economic growth has caused some environmental problems such as energy shortage and environmental pollution. In this regard, in the present study, the analysis of a fixed-sum energy and environmental efficiency to achieve sustainable efficiency in the transport sector of Iran under the limitation of energy consumption and environmental pollution using the Common equilibrium efficient frontier da...
the aims of this study were to assess the energy and economic flows of biodiesel production from olive pomace oil using transesterification method with ultrasound waves. for this purpose biodiesel production from this feedstock were examined through a life-cycle process with considering five main stages of agricultural production, transportation, olive oil extraction, pomace oil extraction and ...
Energy consumption share in construction part and dependent industries is about 40 percent of total energy consuming in Iran which is significant compared to other industries such as transportation, agriculture and therefore is of important. As energy consumption reduction and material durability improvement leads to cost reduction from one hand and environment pollution reduction on the othe...
Considering the current problems in the field of transportation in Tehran, this paper attempts to develop a sustainable technology assessment model in Tehran’s urban transport sector. The research was carried out in a mixed method. In the qualitative phase, using the principles of the data theory of the foundation, identifying the important components in the technology evaluation and compiling ...
— Since most modes of transportation rely on liquid energy carriers like gasoline or diesel, the approaching end of the fossil fuel era poses a special challenge. One should bear in mind that nothing matches the energy density of liquid fuels. It is, therefore, important to consider the efficiency of various modes of transportation and explore alternative options for energy carriers. This inclu...
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