objective(s): the purpose of this study was to investigate effects of short-term aerobic exercise on energy intake, appetite and energy-regulating hormones in free-living men and women.   materials and methods: sixteen (eight men, eight women) sedentary young normal weight subjects participated in two experimental conditions with two days apart: five days control with no exercise, and five days...

turkey as a country located between the main energy resources and the european :union: can play the role of a natural bridge in energy transportation. the eu countries have always tried to find some alternative routes for russian energy pipelines and turkey could be one of the best options. although turkey is poor in oil and natural gas resources, however, this country can play a strategic role...

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the concept of energy security has been changed into one of the key and controversial concepts in international relations and energy economy in the recent years. the literature of this concept has more developed in europe. because, european countries supply their major needs by imports. hence, russia as one of the main energy suppliers of europe :union: uses leveraging energy for closer to euro...

pastures play an important role in protecting environment and ecosystems. unfortunately more than 40 percent of pasturess in the world have been destroyed and 20 percent of destroyed pastures are located in developing countries. application of solar energy could significantly contribute to preserving the pastures. the main purpose of this study was to examine the role of solar energy in protect...

in the last quarter of the century, a substantial amount of research work has been conducted on optimization of energy consumption by refrigeration systems and on proper design and construction of household refrigerator-freezers. the importance of such energy optimization schemes stems from the environmental impacts of freon (r-12) used as the working refrigerant in household refrigerator – fre...

during the past few years, modeling in agriculture has attracted considerable attention. new modeling methods including neural networks are employed in various industries, and it is necessary that their use in agriculture be also considered. this research addressed the trend of energy use in broiler farms in alborz province and sought to model the trend of energy consumption and production in t...

the present paper is aimed at describing a “closed cycle” power plant schematic (soft, solar oxygen fuel turbine) with macroalgae (seaweed) cultivation in a pond, combustion of its organic matter in a fluidized bed boiler of rankine cycle and return of the combustion products to the pond to feed algae. the oxygen used for combustion is released to atmosphere in photosynthesis. as a renewable fu...

in this paper some upper and lower bounds for the greatest eigenvalues of the pi and vertex pimatrices of a graph g are obtained. those graphs for which these bounds are best possible arecharacterized.