نتایج جستجو برای: water network

تعداد نتایج: 1204521  

Journal: :اکو هیدرولوژی 0
سعید فرزین استادیار، گروه مهندسی آب و سازه‏ های هیدرولیکی، دانشکدۀ مهندسی عمران، دانشگاه سمنان حجت کرمی استادیار، گروه مهندسی آب و سازه‏های هیدرولیکی، دانشکدۀ مهندسی عمران، دانشگاه سمنان مهسا دوست محمدی دانشجوی کارشناسی ارشد مهندسی و مدیریت منابع آب، دانشکدۀ مهندسی عمران، دانشگاه سمنان آنسه قنبری دانشجوی کارشناسی ارشد مهندسی و مدیریت منابع آب، دانشکدۀ مهندسی عمران، دانشگاه سمنان الهام ضمیری دانشجوی کارشناسی ارشد مهندسی و مدیریت منابع آب، دانشکدۀ مهندسی عمران، دانشگاه سمنان

precipitation is one of the hydrological processes that play an important role in controlling water resources management. shortage of rain causes some problems such as lack of drinking water. due to the importance of the issue of water shortage, using modern methods to predict hydrological processes will play an important role in planning and management of water resources. therefore, in this st...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
emad aydani mahdi kashninejad mohsen mokhtarian hamid bakhshabadi

in this study, response surface methodology (rsm) was used to optimize osmo-dehydration of orange slice. effect of osmotic solution temperature in the range of 30 to 60 °c, immersion time from 0 to 300 min and sucrose concentration from 35 to 65 brix degree on water loss, solid gain, moisture content, water loss to solid gain ratio and brix change were investigated by central composite design (...

H. Tavakolipour M. Mokhtarian

ABSTRACT: In this study the reliability of using response surface-neural network method to predict the osmotic dehydration properties of crookneck squash has been investigated. In order to carry out this project, the osmotic solution concentration, the osmotic solution temperature and immersion time were chosen as inputs and solid gain and water loss were selected as outputs of the designed net...

ژورنال: علوم آب و خاک 2017

Due to water shortage in country, more accurate estimate of water reserve can be one of the most important guidelines on the optimal management of water resource and cycle for development of water productivity efficiency. Therefore, using artificial neural network techniques the water supply of 174 fallen trees from different species was simulated. From any part of each bole, components of cons...

Journal: Iranian Economic Review 2020

recipitation shortage and the consequent loss of several water resources, as well as the population growth, are the most important problems in arid and semi-arid regions like Iran. The providence of basic tools for optimal water resources management is considered as one of the main solutions to this problem. Since the agricultural sector is the main user of water resources, the present study pr...

In this work, the feasibility of flow pattern and oil hold up the prediction for vertical upward oil–water two–phase flow using pressure fluctuation signals was experimentally investigated. Water and diesel fuel were selected as immiscible liquids. Oil hold up was measured by Quick Closing Valve (QCV) technique, and five flow patterns were identified using high-speed photo...

ژورنال: آبخیزداری ایران 2020

Co-management of water resources is one of the most important managerial approaches in water resources; its achievement requires the strengthening of social capital; also, the role of water resources Local Stakeholders in increasing the amount of this capital is undeniable. The social network analysis approach is one of the strategies that will examine the pattern of relationships between Local...

Journal: :Applied Water Science 2022

Abstract Partitioning a water distribution network into several district metered areas is beneficial for its management. according to node features and connections remains challenge. A recent study has realized partitioning based on or pipe individually. This proposes an unsupervised clustering method nodes graph neural network, which uses attention technology update the cluster nodes. The simi...

دهقانی, رضا, قربانی, محمدعلی,

     Electrical conductivity (EC) is an important factor in river engineering, especially studying of river water quality. In this study we studied and evaluated wavelet neural network to predict the electrical conductivity of the Kakareza river (in lorestan), and the results were compared with results of artificial neural network model. For this purpose, hydrogen carbonate, chloride, sulfate, ...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
زهرا زارعی دستگردی هوشنگ ایروانی حسین شعبانعلی فمی آرزو مختاری حصاری

the present study was undertaken to analyze factors affecting farmers' participation in the management of water network in jarghouyeh district in isfahan county. a descriptive correlation research design was adopted for the study. at the field work level, surveying was the basic method which was taken into consideration. the statistical population of the study consisted of about 1810 membe...

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