Water quality parameters
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This study applied principal components analysis (PCA) and cluster analysis (CA) to assess water quality and recommend sites and water parameters for water quality monitoring at Bung Binh Thien reservoir, An Giang province, Vietnam based on 11 water samples collected in the dry season.
10p viohoyo 25-04-2024 3 2 Download
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The Cuu Long delta is affected strongly by mass water from rivers of the MeKong river system such as Tieu, Dai, Ham Luong, Co Chien, Cung Hau, Dinh An and Tranh De (Hau river). The estuaries of Cuu Long delta are large with a huge amount of sediment (about 100 million tons per year) and high tide (about 4.2m) made the large tidal flats with high level of biodiversity, which is an important resource for aquaculture.
6p viohoyo 25-04-2024 2 2 Download
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This paper also suggests some solutions to reduce the influence of the golf course on water quality and aquatic ecosystem of Bui River catchment including improved pesticide management and riparian buffer zones.
12p vilarry 01-04-2024 1 1 Download
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PET bottles are widely used for drinking water. PET bottles’ quality depends on their thickness. The aim of this study is to find design variables and optimal parameters of the stretching blow molding (SBM) process of PET bottles in order to increase the uniformity of bottle thickness by using the simulation technique and Taguchi method.
5p vigojek 02-02-2024 4 2 Download
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This research content belongs to the national key program, which was conducted by the researchers of the Industrial University of Industry. The paper presented the experimental study to determine the key parameters of syngas filter and clarification combined cooling for Ejector venture equipment which was assembled rice husk gasification line for supplying the syngas fuel to the dual -fuel engine combined generator 5.5 kW.
8p vimarillynhewson 02-01-2024 7 3 Download
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This study was carried out to evaluate the seasonal variation of phytoplankton and its relationship with environmental parameters of some inland water bodies in Soc Trang province. A total of 171 phytoplankton taxa belonging to Cyanophyta (24 species), Chrysophyta (2 species), Bacillariophyta (65 species), Chlorophyta (43 species), Euglenophyta (34 species), and Dinophyta (3 species) were studied.
8p vimichaelfaraday 28-12-2023 8 3 Download
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This paper discusses the research results on the bonding quality of bamboo strips when impregnated in LMW PF solution with different ratios and different pressing technology parameters; at the same time, physical and mechanical properties of bamboo composite materials treated with PF PTLT such as: water absorption resistance, dimensional stability, bonding strength, modulus of rupture (MOR), modulus of elasticity (MOE) are also significantly improved.
6p vikissinger 21-12-2023 3 1 Download
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The objective of this study was to evaluate the effects of land preparation methods and iron-coated (Fe-coated) rice seeds on the growth, yield, and Fe uptake of rice in alluvial soils in the Mekong Delta region. The experiment was conducted in the 2020 summerautumn cropping season under the triple rice cultivation system in Chau Thanh district, An Giang province.
10p viengels 25-08-2023 4 2 Download
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Part 1 of ebook "Civil engineering reference manual for the PE exam (7th edition)" has presents the following content: background and support; engineering drawing practice; linear algebra; numerical analysis; water resources; fluid flow parameters; hydraulic machines; water supply treatment and distribution; wastewater quantity and quality; pollutants in the environment; rigid retaining walls; disposition of hazardous materials; temporary excavations; environmental remediation;...
627p dieptieuung 20-07-2023 8 2 Download
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In addition to the economic successes, regional water environment has been and is being affected by increasing agricultural, industrial and daily–life wastes. Water pollution is a global problem, not just one country, or any one territory. To take specific measures to protect water resources, it is essential to assess the current state of water quality.
22p viironman 02-06-2023 4 3 Download
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The objective of this paper is to apply Pham Ngoc Ho’s method for aggregate water quality assessment of surface water and wastewater at different monitoring points around Hanoi, Vietnam. We measured concentration of 10 parameters in Hoan Kiem lake, West lake, Giang Vo lake and 25 different monitoring points at rivers in Hanoi for surface water quality evaluation, and 7 parameters at 45 monitoring points in industrial zones/clusters in Hanoi for wastewater quality evaluation.
7p viargus 03-03-2023 4 1 Download
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This paper presents the annual monitoring data on the water environment of the two mouths of the Cai river and Tac river, Nha Trang bay, during the period 2015–2019. Statistical data showed an increase in dissolved oxygen demand (DO), biological oxygen demand BOD5, and the concentrations of ammonia, Zn and Cu. Seasonal variation revealed that most of studied parameters’ concentrations, especially nutrients, were higher in the rainy season.
6p vipagani 24-10-2022 10 2 Download
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This study aims to analyze spatial and temporal changes of surface and groundwater quality from March to December 2019, in Son Dong commune, Hoai Duc district, Hanoi. A number of physicochemical parameters were sampled for analysis to give quantitative assessments, and spatial distribution as well as temporal variation were performed.
10p vikoenigsegg 26-09-2022 12 3 Download
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The present study "Influence of stocking density on water quality and growth performance of whiteleg shrimp (Litopenaeus vannamei) reared in fiberglass tanks, without water exchange" evaluated the effects of stocking density on water quality parameters, growth performance and survival rate of white leg shrimp Litopenaeus vannamei, reared in fiberglass tanks, without water exchange.
9p tieuvulinhhoa 22-09-2022 12 3 Download
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This study compares water quality parameters including target agrochemicals in a transect along the major Mahaweli River and across the local rice farming community of Wilgamuwa in the dry zone that receives water from Mahaweli reservoirs.
8p thebadguys 15-01-2022 12 0 Download
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In this study, water quality parameters and zooplankton fauna were investigated from 14 different water wells in Yayladağı District of Hatay Province. The study was conducted seasonally between October 2015 and July 2016. A total of 51 species were identified, including 30 species of rotifers, 9 species of cladocerans, and 12 species of copepods. The most abundant species, Keratella cochlearis, Bosmina longirostris, and Tropocyclops prasinus, were found in 11, 13, and 12 wells, respectively.
11p dolomite36 30-12-2021 8 0 Download
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For water quality assessment, based on TCVN 7220-2: 2002, the water in Van Long RAMSAR is in low level of pollution. According to ASPT index on average (3.42), this parameter was under medium to heavily polluted. The results recommend utilizing family taxon of macrozoobenthos with the recorded scales to assess quality of aquatic environments of freshwater bodies in northern Vietnam.
11p meyerowitz 25-12-2021 15 0 Download
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Farinograph values on the contrary, showed the good quality of standard flour but parameter water absorption was better with addition of oat flour due to non-starch polysaccharides presented in oat. Extensograph device showed that increasing addition of oat flour decreased resistance to extension. Colorant cereals generally can increase biodiversity in agriculture, and can be attractive raw materials for production foods with added value.
7p mudbound 10-12-2021 9 1 Download
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Aquatic macrophytes are one of the key components of freshwater ecosystems and contribute to ecosystem functioning and environmental sustainability. They are assumed to be an ideal biomonitoring tool in long-term monitoring programs implemented by the EU Water Framework Directive due to their sensitivity to environmental factors. Therefore, this study focuses on the evaluation of the ecological status in Lake Sapanca using macrophyte composition and abundance in order to make future predictions on the health of aquatic ecosystems and to form effective management.
11p tudichquannguyet 29-11-2021 9 1 Download
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This study focuses on accessing the status and changes of coastal sea water quality in Hai Ninh and Nhat Le Beach in Quang Binh province from 2013-2017. According to monitoring results in 2017, generally, the sea water quality in Hai Ninh and Nhat Le Beach in dry and rain seasons was pretty good; all of the values of parameters were much lower than the standard. The values of the monitoring parameters vary between the observation periods in the year. TSS content tend to be higher in the first survey, lower in the third survey.
8p huyetthienthan 23-11-2021 8 1 Download