نتایج جستجو برای: generation
تعداد نتایج: 355391 فیلتر نتایج به سال:
Background and Purpose:Coronary artery Stenting is known to improve the outcome for ischemic heart disease. Many clinical studies have been performed to determine the long-term outcome of coronary Stenting and most of them were based on first-generation bare-metal Stents. The aim of this study is to evaluate long-term (24 6.4 month) results of second-generation bare metal stent. Materials an...
In this study, thermodynamic and economic analysis of a photovoltaic electricity generation system (PVEGS) with and without self-cleaning panels is reported. In the first part, thermodynamic analyses are used to characterize the performance of the system. In the second part, the economic comparison of photovoltaic electricity generation with and without self-cleaning panels is carried out for a...
The issue of protecting the environment and preventing environmental pollution is one of the priorities of Iran’s economic and social development plans. The purpose of this paper is to analyze changes in the environmental effects of electricity generation, as electricity production patterns change, on production and welfare of households in Iran by using the social accounting matrix of 2011 ...
Objectives: This research was conducted to compare the reaction of married people to marital conflict among three generations of women and two generations of men. Method: The study was a qualitative research and the target population was all married people belonging to last three generations living in Tehran in 2014. Sampling was conducted in two stages using convenience and purposive methods. ...
Purpose: The present study was conducted to identify the status of research on entrepreneurship and income generation in public libraries with a focus on creative economics. Method: The present study is a systematic study. The statistical population of this study was all the researches done in the field of creative economy in public libraries that have been published in connection with entrepr...
this study aims to estimate economic capacity and, in turn the utilization rate of economic capacity in iran’s electricity generation industry during 1350-1388. aggregate time series data for thermal power plants are used. with parametric restrictions for linear homogeneity in input prices imposed, capital demand function is first derived and estimated. this allows the derivation of economic ca...
چکیده ندارد.
voltage control is one of the imperative issues in the smart distribution control system. while traditional distribution network is equipped with communication and monitoring equipment, the online voltage control can be perfectly achieved. with using these smart grid technologies, the distribution voltage control schemes should carry out intelligently and cover the undesirable effect of high pe...
-the cowpea aphid, aphis craccivora koch, is an important pest of robinia pseudoacacia frisia. life table parameters of a. craccivora were determined under natural (16- 33ºc and 32-89% rh, respectively) and laboratory (25 ± 1ºc, rh of 70 ± 5% and a photoperiod of 16:8 h (l: d) conditions. the data were analyzed using the age-stage, two-sex life table theory. each experiment was replicated 45 ti...
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