نتایج جستجو برای: energy resources
تعداد نتایج: 912330 فیلتر نتایج به سال:
Nowadays required energy mostly comes from fossil fuels but the limitation of fossil resources and their environmental effects have encouraged communities to seek alternative renewable energy sources. Meanwhile enery forom biomass (bioenergy) has particular importance due to wide range of resources and other advantages. In this research, a multi-objective model is proposed to design a bioenergy...
a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...
Global warming, environmental pollution, fossil resources reduction, the increased demand and price of energy carriers, and various international social and political consequences are among the problems of traditional energy generation and distribution system. In the traditional generation systems, about two-thirds of energy is wasted and the presence of scattered energy resources such as photo...
For several year, "Entre Douro e Minho"(EDM) area has undergone an important diminution in agricultural surface and number of exploitations. RGA analysis of 1989 and 1999 confirms this tendency but some “fréguesias” know an increase in the cultures surface cultivated like Vinho Verde. Spatial representation of the RGA data in a GIS shows the great productive areas of Vinho Verde where cultures ...
This paper presents the experience of an Europe-Africa telemedicine network, focused on the pediatric area, and involving hospitals located in Luanda (Angola), Benguela (Angola), Praia (Cape Verde) and Coimbra (Portugal). In the scope of this network, the cooperation between these hospitals goes beyond the teleconsultation sessions. Tele-training, clinical experience exchange, patient transfer ...
Protein design aims at designing new protein molecules of desired structure and functionality. One of the major obstacles to large-scale protein design are the extensive time and manpower requirements for experimental validation of designed sequences. Recent advances in protein structure prediction have provided potentials for an automated assessment of the designed sequences via folding simula...
Article history: The Cape Verde Islands are l Received 29 May 2007 Received in revised form 2 May 2008
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