نتایج جستجو برای: natural cycle
تعداد نتایج: 742080 فیلتر نتایج به سال:
By increasing the extraction of natural gas, its role in the restructured power systems is being expanded, due to its lower pollution. Iran has the second largest reserves of natural gas in the world and exports it to different countries. This paper represents long run analysis of natural gas export from Iran to Turkey as a case study, considering direct transfer and exporting via the power mar...
Drawing upon the corporate social responsibility literature, we investigate the moderating effects of the natural environment and the stage of an organization’s life cycle on the market orientation to firm innovativeness relationship. Through 229 owners or chief executive officer respondents, our results establish evidence of (1) a positive linkage between market orientation and firm innovative...
Prefrontal regions are involved in processing emotional stimuli and are a topic of interest in clinical and neurological research. Although sex steroids are potent neuromodulators, the influence of menstrual cycle phase and hormonal contraceptive use is rarely taken into account in neuroimaging studies. Our purpose was to evaluate changes in gamma-aminobutyric acid (GABA) in women, as measured ...
Background and purpose: Follicular atresia is a natural phenomenon throughout growth and development, but in excessive cases it causes disorders in the ovarian function which is the commonest cause of infertility. Outbreak of depression in women is twice as much as men. Electric-shock therapy could be used in the treatment of depression resistant to drugs. However, it has some side-effects. T...
natural ecosystems provide many goods and services for human beings via their multiple functionalities. one of these important functions is the role of natural ecosystems in regulation of hydrologic cycle and increasing the infiltarion and retention of water in soil context and preventing from water runoff which may cause in unfavorable consequences like soil erosion and flooding. quantificatio...
OBJECTIVES To compare the effectiveness of in vitro fertilisation with single embryo transfer or in vitro fertilisation in a modified natural cycle with that of intrauterine insemination with controlled ovarian hyperstimulation in terms of a healthy child. DESIGN Multicentre, open label, three arm, parallel group, randomised controlled non-inferiority trial. SETTING 17 centres in the Nether...
Usually, it is common to use the internal heat exchanger subcooler-superheater after the condenser and before the expansion valve in the compression refrigeration cycles. In this study, the effect of the heat exchanger is evaluated by using recovery heat exchanger after the compressor and before the condenser. To this end, the vapor compression refrigeration cycle with conventional heat exchang...
hydrogen is seen as one of the important energy carriers of the future with potential to reduce local as well as global warming. the main by-product of the combustion of hydrogen in air is water vapor and trace quantities of oxides of nitrogen. an experiment was conducted to study the impact of hydrogen/natural gas blends on performance, thermodynamic efficiency and exhaust gas emissions in a r...
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