نتایج جستجو برای: qualitative and quantitative deficiency of water resources
تعداد نتایج: 24125806 فیلتر نتایج به سال:
Water requirements in many large water supply systems are provided by mixing water withdrawal from surface and underground resources with different quantity and quality.Water supply from underground sources requires energy consumption and surface water resources are limited and unstable.The aim of this research is managing optimal supply of required water of system with minimum energy cost and ...
چکیده روش های متعددی برای برآورد رواناب حاصل از بارش در حوضه های آبریز وجود دارد. یکی از این روش ها استفاده از مدل های هیدرولوژیکی است. با استفاده از مدل های هیدرولوژیکی و شبیه سازی فرآیندهای هیدرولوژیکی می توان با صرف کمترین زمان و هزینه، رواناب و مولفه های دیگر چرخ? هیدرولوژیکی را برآورد کرد. از آنجا که در حوضه های آبریز اندازه گیری تمام کمیت های مورد نیاز برای تحلیل رواناب ممکن نیست، انتخاب...
in last decade it is almost impossible to not seen anything about water resource crisis and water shortage in natural resources exploitation and use reports. such information encourages decision makers and researchers to looking for solutions in relation to this problem and sustainable management of water resources. in this regard, first step towards sustainable management of water resources is...
according to coates’s (2004, as cited in zhang, 2010) definition of "conversational dominance" (p.111), it refers to the phenomenon of a speaker dominating others in interaction. specifically, it means how a speaker makes use of certain strategies to get the floor and maintain the floor. thus, the amount of talk is the main measurement for the dominance of the conversation. whether a speaker do...
چکیده در بخش اول این پروژه دو روش میکرواستخخرا به نامهای میکرواسخخرا امولسیونی با کمک اموا فراصتتتو 1 و میکرواستتتخخرا مای – مای با کمک هوا 2 ، به عنوان دو روش میکرواستتتخخرا بدون حلال پخشکننده 3 ، برای اسخخرا برخی هیتدروکربتنهای آروماتیتک حلقوی 4 از نمونتههای آبتی بهکار گرفخه و پارامخرهای موثری همچون نوع حلال اسختتتتخرا کننده، حجم حلال اسخخرا کننده، میزان نمک، زمان تابش اموا فراصتو ، تددا...
The optimal management of ground water consumption is impossible without proper knowledge of water distribution, aquifer territories, and water table fluctuations. Humans are faced with the problem of water scarcity, due to various reasons such as population growth, droughts and reduced rainfall, and industrial progress and its impact on water resources. The purpose of this study was to determi...
Background and Objective: Water quality assessment is an important step for optimal and proper use of water resources for drinking and selection of suitable and consistent water quality patterns. Therefore, the necessity of studying water quality characteristics in water resource management programs has been highly considered. Materials and Methods: In this study, the hydrogeochemical quality ...
in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...
the increasing number of hazards related to water shortage in different parts of the world and the probability of socio-economic crisis, social stresses and even war occurrence as water shortage impacts; shows that water supply challenges will be more important and widespread than energy supply challenges in future decades. during the time, with population growth, resource demand increase and p...
work engagement literature has been dominated by quantitative research methods. this article aims to study work engagement antecedents using mixed-method sequential explanatory design. this design starts with the collection and analysis of quantitative data followed by the subsequent collection and analysis of qualitative data. the qualitative phase of the study was designed to incorporate the ...
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