نتایج جستجو برای: water resourse system

تعداد نتایج: 2700237  

Journal: :Electronics 2021

Hybrid architectures integrating a processor with an SRAM-based FPGA fabric—for example, Xilinx ZynQ SoC—are increasingly being used as single-chip solution in several market segments to replace multi-chip designs. These devices not only provide advantages terms of logic density, cost and integration, but also run-time in-field reconfiguration capabilities. However, the current capabilities pro...

Journal: :DIEM 2021

The report addresses the issue of adaptation newcomers in organizations. This problem is very important now business and public organizations according to labor productivity, staff turnover, corporate culture etc. In spite obvious importance organization, studies this require new approaches methods. Mechanisms are explored that help retain organization create a desire continue its activities or...

Journal: :international journal of agricultural management and development 2014
mohammad reza bakhshi behnaz nejati mofid shateri

in recent years, farming section of south khorasan province faces different limitations such as increasing shortage of water resources and continuous reduction of weather showers.considering consecutive droughts and water crisis in agricultural plain of the province, it is necessary to use water resources optimally and increase productivity of water shortage input. comparison of water productiv...

2014
Leilei Geng Deshen Xia Quansen Sun Kai Yuan

With the rapid development of the remote sensing satellite, the size and the resolution of satellite images grow increasingly. The evaluation of remote sensing image quality requires precise information of control points extracted from unevaluated images and reference images. Therefore, we propose an adaptive Wallis filter method based on sparse recognition to increase the number of control poi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Journal: :تحقیقات نظام سلامت 0
افشین ابراهیمی - استادیار، مرکز تحقیقات محیط زیست، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان بهرام کمره ئی مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی لرستان، خرم آباد، ایران. قربان عسگری استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایران. عبدالمطلب صیدمحمدی استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایران قدرت اله روشنائی استادیار، گروه آمار زیستی دانشکده بهداشت دانشگاه علوم پزشکی همدان، همدان، ایران

background: corrosivity is one of the factors affecting the water quality. not controlling the chemical quality of water in the distribution network causes corrosion, sedimentation and economical and health damages. the aim of this study was to determine the drinking water corrosivity and sediment of kuhdasht, iran by using the corrosivity index. methods: in this study, 12 predetermined areas l...

Journal: :jundishapur journal of health sciences 0
mohammad reza samaei department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran; department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran. tel: +98-7137251001; +98-9177320737 hoshang maleknia department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran zahra elhamiyan department of environmental health engineering, school of health, shiraz university of medical sciences, shiraz, ir iran siavash isazadeh department of civil engineering and applied mechanics, mcgill university, montreal, canada

conclusions the results indicated that the model, compared with other models, was user-friendly and the desired results were obtained by a minimal data. materials and methods the current paper developed a process model. first, a sketch of nitrate and ammonia storage, their specifications and parameters were set out and created on a page, and then, mathematical relations of each process were set...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی عمران 1383

هر سیستم انتقال و توزیع آب شهری باید به گونه ای طراحی و اجراء شود که بتواند نیاز آبی جامعه را با فشار کافی و در طول دوران طرح تامین کند، معمولا اتلاف آب مبتلا به تمام سیستم های توزیع است و در شرایط عادی بخش عمده ای از مصرف سرانه را تشکیل می دهد. این تحقیق که با هدف انجام مطالعه آب به حساب نیامده و تعیین اجزاء مختلف تلفات فیزیکی و غیر فیزیکی و بازده حجمی سیستم توزیع آب شهر ایوان صورت گرفته است،...

2003
Charles Cockell

Introduction: The Martian poles present special challenges for human scientific expeditions that bear similarities to operations in terrestrial polar regions. These challenges include mobility on snows and ices, the problem of accommodation in the deep field, methods for the use of local resources and problems of station maintenance. Because the polar regions are dynamic, substantial volatile s...

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