نتایج جستجو برای: and 21924417479 rials
تعداد نتایج: 16827180 فیلتر نتایج به سال:
in order to compare of ecological management of weed control on economical income, yield and yield components of cotton (gossypium hirsutum l.), a randomized complete block design with 12 treatments and four replications was conducted in mahvelat of khorasan razavi province, iran. treatments consisted of weeding, harrowing, burning, two times weeding, weeding + harrowing, weeding + burning, har...
Due to the lack of adequate sources of drinking water and uncertainty about the quality of these sources, along with rising water demand due to population growth, it is important to find a suitable solution to supply drinking water. Rainwater harvesting from roofs and use of natural discharge from springs are among techniques which can replace surface and underground water resources. The city o...
Background & Aim: Traffic accidents are the leading cause of death in the world, which brings great cost to the economy. So, this study aimed to determine the loss of productivity in traffic accident victims admitted to hospitals in Mashhad University of Medical Sciences in 2018. Methods: This cross-sectional study was conducted on 551 injured persons selected randomly. For productivity loss e...
Abstract Objective: In health economics, one of the important methods of economic evaluation is cost-effectiveness analysis. The usual procedure in this method is to consider effectiveness of Disability-Adjusted Life Years (DALYs) as a measure criterion. Material and Methods: This was a cross sectional study of economic assessment type or Cost-Effectiveness. All over 30 years old population o...
Introduction: Managers attempts should be focused on the processes to prepare clear vision from financial- economic behavior of organizations to maintain in dynamic and competitive environment. This study was aimed to analyze BEP situation inpatient units in ALFA Hospital at Qazvin University of Medical Sciences (QUMS) Methods: This Cross- sectional-Descriptive study was conducted in 2007 in AL...
The term geopolymer is a sustainable binder refers to the study of waste mate- rials containing silicon (Si) and aluminum (Al), which create an alternative formed by complex repeated chain geopolymerization process. Hellacious materials alternation mandatory see construction as beautiful infrastructure there are limited natural resources produce qual- ity concrete. Alternative aggregates create...
abstract the purpose of this study is to examine the economic impacts of developing and introducing almond late flowering cultivars during 1968 to 2019 years in iran, which developed in sahand horticultural research station using the economic surplus model and field and time series data. the estimation of shift parameter identifies that almond late flowering cultivars make almond supply curve m...
abstract objective: in health economics, one of the important methods of economic evaluation is cost-effectiveness analysis. the usual procedure in this method is to consider effectiveness of disability-adjusted life years (dalys) as a measure criterion. material and methods: this was a cross sectional study of economic assessment type or cost-effectiveness. all over 30 years old population of ...
Floods are considered as most destructive among all natural hazards which impose lots of damages on human societies. Hence, it is important to estimate such damages and losses and to determine flood impact areas for management plans. HEC-FIA software as a new model (Sep. 2012) was used in Ghohrood and Ghamsar watershed basins to estimate flood-driven losses and impacts. In this model, HEC-RAS a...
economic value of natural resources is increased via tourism resources function. natural environment in the desert area has great potential for attracting tourists and in this respect it has a nonmarketable value. making these values marketable may lead to rise up the economic value of natural environment in the desert area. one of the most important natural environments in the desert areas of ...
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