نتایج جستجو برای: شاخص wqi

تعداد نتایج: 74972  

Journal: :East African journal of science, technology and innovation 2022

Water quality assessment has become a very essential scientific procedure for qualifying water drinking and general purpose use, better public health policy on clean supply. Various tools have been employed to determine the status of systems drinking, industrial use. For this study, index (WQI) recently developed pollution (WPI) adopted evaluate Molo basin. The world organization (WHO) defined ...

Water Quality plays an important role in attaining a sustainable aquaculture system, its cumulative effect can make or mar the entire system. The amount of dissolved oxygen (DO) alongside other parameters such as temperature, pH, alkalinity and conductivity are often used to estimate the water quality index (WQI) in aquaculture. There exist different approaches for the estimation of the quality...

The lakes behind the dam considered as semi-natural resources and have a special role in aquaculture. In order to achieve management goals, it is necessary to know the pattern of changes in biotic and abiotic parameters in the lake behind the dam. For this purpose, in order to determine water quality using water quality indicators (WQI) 12 physicochemical properties (water temperature, dissolve...

Journal: :Water 2021

The spatial assessments of water supply quality from wells, springs, and surface bodies were performed during the dry rainy seasons in six municipalities eastern regions Michoacán (Central Mexico). Different physicochemical parameters used to determine supplies’ Water Quality Index (WQI); all communities presented good quality. analysis indicates that many within limits set by international sta...

2013
PAWALAI KRAIPEERAPUN SOMKID AMORNSAMANKUL

This paper proposes an ensemble of support vector regression and complementary neural networks to predict the Water Quality Index (WQI) for Tha Chin River, Nakhonpathom, Thailand. The data set was collected during the year 2002-2007. Four parameters are used in the prediction which are dissolved oxygen, total solid, biological oxygen demand, and suspended solid. It is found that an ensemble of ...

2015
Deming Dong Xiaoxue Liu Zhiyong Guo Xiuyi Hua Yulong Su Dapeng Liang

The objectives of this study were to investigate the seasonal and spatial variations of heavy metal pollution in the overlying water and surface sediments of the Tiaozi River, a tributary of the Liao River, which is one of the seven major rivers and one of the most heavily-polluted rivers in China. Water and sediment samples were collected over four seasons, analyzed for heavy metals (Pb, Cu, N...

2013
S. K. Shah Shailendra Kumar Shah

The aimed study assesses the water quality of Mardi River applying National Sanitation Foundation (NSF) America developed index called Water Quality Index (WQI). This index is one of effective way to inform about water quality trends to the public and the policy makers for water quality management. As Mardi River is primary source of consumption to Pokhara city and Mardi Watershed entities, the...

Journal: :Hydrology 2023

Online approaches for monitoring water quality can be an alternative aid to rapid decision-making in watershed management, especially reservoirs, given their vulnerability the process of eutrophication. In this study, a modified index (WQI) was developed using parameters that are easily measured with sensors, which would allow online reservoirs. The WQI based on WQICETESB and we used regression...

2015
Yuanpeng Zhang Danmin Qian Jiancheng Dong

Some previous works show that more than 60% of the information available on the Web is located in Deep Web database. Such information cannot be directly indexed by search engines.In this paper, a hybrid method, which is composed of a domain model and a block importance model is proposed to extract information in Deep Web.The domain model is used for classifying and identifying whether a form is...

Journal: :Current World Environment 2022

Reservoirs are vital water sources that contribute significantly to local ecological and environmental balance, particularly in semi-arid regions. An evaluation of the drinking quality index (WQI) has been conducted using ten parameters like electrical conductivity (EC), chloride (Cl-), pH, total hardness (TH), alkalinity (TA), phosphate (PO43-), dissolved oxygen (DO), nitrate (NO3-), solids (T...

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