Water quality

Giếng khai thác .1. KHÁI NiỆM CHUNG QUẢN LÝ NƯỚC KHU VỰC ĐÔ THỊ • Nước Mặt (Surface water) • Chất lượng nước (Water quality) • Nước Ngầm (Ground water) ....

30p boy_them_yeu 04-07-2013 94 12   Download

The research reported herein has demonstrated that pervious pavements can be introduced as a sustainable stormwater management initiative and as a key Water Sensitive Urban Design feature to deliver numerous benefits to the environment. The outcomes from the study will be useful in designing environmentally friendly car parks, pedestrian paths, light traffic drive ways, sporting grounds and public areas in the future.

244p runthenight05 01-03-2023 12 3   Download

The objectives of the current study are to develop a methodology to estimate the optimal size of the rainwater tank at a particular location considering the local rainfall, roof area, demand for water and the reliability of supply (supply security) required; to quantify the rainwater volume that could be harvested at site using domestic rainwater tanks to minimise pressure on the potable water supply secured from traditional catchment sources until the desalination plant is commissioned in 2013; to analyse the efficacy of rainwater tanks to reduce the stormwater runoff and improve the quali...

226p runthenight05 01-03-2023 6 3   Download

This study investigated trace essential metals (Cu, Zn and Cr) and non-essential metals (Pb, Cd and Hg) in water, sediment and tissues of water spinach, snake head fish and swamp eel from the Saigon River. Sampling was conducted from January to December 2004 at three sites. Three water and sediment samples, edible parts of twenty water spinach (Ipomea aquatica) samples (leaves and stems), twenty snake head fish (Channa striata) and twenty swamp eels (Monopterus albus) were collected at each site.

148p runthenight07 01-03-2023 12 3   Download

This research concludes with a discussion on the potential effects on river water quality due to dry weather spills, the impact of rainfall intensity and their potential to mobilize the microbial contamination and move towards a stormwater drain and be transported to a nearby water course. Overall, the objectives of this study were achieved and the transport of microbes can be estimated at different elapsed times depending on the relative humidity after a dry weather spill event, providing its impact on waterways.

232p runthenight07 01-03-2023 5 3   Download

Depending on the origin of the water and the formation process, crystals are divided into three main types: snow crystals, ice crystals, and water crystals. From the shape of the crystal, the purity and the texture level are clearly reflected, then it enables us to assess the quality of the water.

63p mudbound 10-12-2021 18 3   Download

Research objectives: Assessing thickness and quality of peatland on biomass of the melaleuca forest; determining levels of submergence and water quality on biomass of the forest; evaluating levels of peatland thickness and submergence on biomass and CO2 of the melaleuca forest.

35p beloveinhouse10 28-11-2021 17 1   Download

In this research, an attempt will be made to review the quality of EnglishVietnamese versions in terms of conveying the intention of the author, and then recommend some criteria for better translation of political articles.

92p closefriend09 16-11-2021 19 1   Download

Mục tiêu của đề tài là đánh giá chất lượng nước mặt tại lưu vực sông La Ngà tỉnh Bình Thuận thông qua các thông số chất lượng nước và chỉ số đánh giá chất lượng nước WQI (Water Quality Index); đưa tới cộng đồng những thông tin dễ hiểu, đồng thời đề xuất ra những biện pháp khắc phục và bảo vệ môi trường.

194p capheviahe28 01-03-2021 56 8   Download

Research and develop solutions to improve the signal quality of the underwater sensor array for sonar systems and passive positioning devices to enhance the ability to detect and locate targets as sources underwater sound in the shallow sea.

27p gaocaolon6 30-07-2020 27 3   Download

Lentic systems are a diverse set of inland freshwater habitats (Lakes and ponds) exist across the globe and provide essential resources and habitats for both terrestrial and aquatic organisms. The current work was intended to evaluate the quality of the selected ponds (Pond 1, 2 and 3) in and around Vellore district, TamilNadu. The water samples were collected to determine the physical and chemical parameters during every month in the year 2019. Water parameters such as temperature, pH, dissolved oxygen, Alkalinity, electrical conductivity, Chloride, Sulphate, Nitrate, Ca, Cl was studied.

10p angicungduoc6 22-07-2020 27 2   Download

In nuclear safety research, the quality of the results of simulation codes is widely determined by the reactor design and safe operation, and the description of neutron transport in the reactor core is a feature of particular importance.

14p christabelhuynh 30-05-2020 41 1   Download

In this study, service quality and drinking water quality were taken as the strategic management activities. Employees of water supply companies were selected to collect the necessary data.

12p tohitohi 22-05-2020 41 1   Download

Use of poor quality water for agriculture production requires appropriate management strategies such as leaching of excessive salts, selection of salt tolerant crops, frequent application of water etc. Thus a field experiment was conducted at CCS Haryana Agricultural University, Hisar to study the salt dynamics in soil under drip irrigation system on cabbage crop and to investigate the effect of frequency and salinity levels of irrigation water on cabbage.

10p nguaconbaynhay5 16-05-2020 20 2   Download

Luận án với mục tiêu nghiên cứu để xác lập cơ sở khoa học và thực tiễn trong việc xây dựng hệ thống chỉ số chất lượng nước mặt phù hợp với điều kiện môi trường tỉnh Thái Nguyên (hệ thống WQI cải tiến), áp dụng hệ thống WQI cải tiến trong phân vùng chất lượng nước các sông trên địa bàn tỉnh Thái Nguyên theo các chỉ số chất lượng nước, đề xuất giải pháp sử dụng và bảo vệ môi trường nước cho từng vùng. Mời các bạn cùng tham khảo.

28p longnguyentran000 23-12-2016 80 16   Download

Luận văn yêu cầu đáp ứng được nội dung bao gồm các công việc sau: Phân tích các thông số liên quan đến chất lượng nước hồ Thiền Quang; từ kết quả phân tích, đánh giá chất lượng nước hồ Thiền Quang thông qua QCVN 08:2008/BTNMT về nước mặt và chỉ số chất lượng nước (WQI-water quality index); đề xuất một số biện pháp bảo vệ, quản lý chất lượng nước hồ Thiền Quang.

70p change13 07-07-2016 168 18   Download

Nghiên cứu: Phân tích đánh giá chất lượng nước hồ Thiền Quang, Hà Nội tập trung nghiên cứu điều kiện tự nhiên  của Hồ  Thiền Quang và phân tích các thông số liên quan đến chất lượng nước hồ Thiền Quang. Từ kết quả phân tích, đánh giá chất lượng nước hồ Thiền Quang thông qua QCVN 08:2008/BTNMT về nước mặt và chỉ số chất lượng nước (WQI -water quality index). Đề xuất một số biện pháp bảo vệ, quản lý chất lượng nước hồ Thiền Quang.

17p tututhoi 29-04-2015 256 63   Download

Vietnam-Netherlands Mekong Delta Masterplan project: Me Kong delta water resources assessment studies has many contents: description of the mekong delta of Viet Nam, hydrology and surface water resources, water quality, hydrogelogy and groundwater recources, water demand and water balance, issues to be solved.

68p thanhtrinhqc 04-05-2014 58 5   Download

It is estimated that approximately one-third of the world’s population are using groundwater for drinking purposes. Pollution of ground water due to industrial effluents is a major issue (Vasanthavigar et al., 2011). Poor groundwater quality brings negative impact to human health and plant growth. In developing countries like India, it is estimated that around 80% of all diseases are directly related to poor drinking water quality and unhygienic conditions (Olajire & Imeokparia, 2001; Vasanthavigar et al., 2011).

37p lulanphuong 28-03-2012 79 14   Download

To obtain the best practical diet (in terms growth rate, survival rate, feed conversion ratio and water quality) which can replace the Vital feed (an expensive feed for Kuruma prawn) and trash fish under laboratory conditions. Activities 1. Conduct Experiment 1: to test three practical diets: a) the "best" diet from Vu-anh Tuan' s PhD research; b) Diet a) plus additives (e.g., vitamins and minerals); and c) Diet b) with further supplement (e.g., vitamins and minerals plus mixed enzymes). 2.

11p tam_xuan 02-03-2012 70 5   Download