Aquatic environments

This paper presents the results of water quality assessment of clam farming areas for 3 monitoring points in Tien Hai district, Thai Binh province. From the results of the assessment, this study suggests management measures, including improving water quality index used to zoning water quality, thus better managing clam areas; and technical measure which improves farming techniques to protect the aquatic environment of farmers.

11p vibecca 01-10-2024 4 1   Download

Modeling approach has considered as an effective alternative method for environmental risk assessment in recent decades. This work aimed to assess the pesticide fate and transport from rice paddy which has higher potential of pesticide runoff compared to upland fields as reported in previous studies. The study area was the Sakura River watershed, Ibaraki Prefecture, Japan.

9p viyoko 01-10-2024 4 1   Download

In recent years, the understanding of processes on material surfaces has drawn considerable interest from scientists. The adsorption stage is important for further insights into surface interactions and photocatalytic reactions. In this study, we use density functional theory computations to investigate the adsorption of sulfamethoxazole (SMX) molecules on the rutile-TiO2 (001) surface (r-TiO2 ).

8p viyoko 01-10-2024 3 1   Download

Manufactured dyes are notably troublesome chemical toxins. The industrial wastes of these dyes are exceedingly noxious to aerobic and aquatic life and can cause compounds that show carcinogenic, mutagenic, and neurotoxic effects. In this study, cadmium imidazolate frameworks were synthesized by a solvothermal method from cadmium acetate and 2-methylimidazole in an ethanol/methanol mixture.

7p vikwong 29-09-2024 3 1   Download

Microplastics present in high density in coastal marine environments have been reported by many published works worldwide. Microplastic presence poses a major threat to all organisms that come into direct contact with them in the aquatic environment because they are non-biodegradable and adsorbable to some toxic substances.

8p vikwong 29-09-2024 2 1   Download

Compare to other documents, our study was for the first time validated the quality criteria of ICP-MS for analyzing nineteen metal levels in wastewater samples. The application of this method was then tested by analyzing nineteen metal levels in twenty-three wastewater samples in the Tham Luong Canal in Ho Chi Minh City. Based on these results, the correlation of the concentration of these metals in wastewater samples was determined.

7p viengels 25-08-2023 7 3   Download

The goal of the Thesis: Investigate the current status of the trawl fishing, evaluate the invasive level of the trawlers to the fisheries resources and propose solutions to limit the fishing activities to protect the fisheries resources in the coastal areas of Van Don district, Quang Ninh province.

24p tunelove 11-06-2021 14 4   Download

This study aimed to enhance our insight on the potential toxicological effects of silver nanoparticles (AgNPs) into the aquatic environment. To investigate the chronic toxicity of nanoparticles, freshwater micro-crustacean Daphnia lumholtzi was exposed to different concentrations of 0.2, 0.5 µg/l AgNPs, and control, for 21 days.

8p viamman2711 07-08-2020 34 3   Download

In this paper, we present a recent study in the adsorption of uranium from an aquatic environment by reduced graphene oxide - Cu0.5Ni0.5Fe2O4 ferrite – polyaniline (RGO/CNF/PANI) composite. Uranium concentration was carried out by batch techniques. The effect of pH, contact time, concentration of equilibrium state and reusability on uranium adsorption capacity have been studied.

8p abcxyz123_02 03-03-2020 23 2   Download

Research objectives: In order to conduct the aforesaid research objective, the thesis focuses on major missions as follows, generalize and approach the trademark and principal contents for the trademark development of aquatic exports; study experience of some foreign nations in respect of developing the trademark of exported goods, including aquatic exports; thereby withdrawing lessons for Vietnam.

27p change04 08-06-2016 31 6   Download

Goldfish (Carassius auratus) may survive in aquatic environments with low oxygen partial pressures. We investigated the contribution of respiratory proteins to hypoxia tolerance inC. auratus. We determined the complete coding sequence of hemoglobinaandband myoglobin, as well as partial cDNAs from neuroglobin and cytoglobin.

11p galaxyss3 07-03-2013 28 3   Download

Aquaculture is a general term for the resource, giving the human animal from the environment and human exploitation, aquaculture harvest used for food, raw materials or sold on the market. In the aquatic species, most commonly used fishing activities, aquaculture and exploitation of fish.

14p xinh_la 10-02-2012 79 14   Download

The purpose of the study was to analyze the current practice of shrimp farming in the north central Vietnam, to evaluate the status of agricultural production and economic conditions - social and environment, and determine the limit application of better management practices. The report presents the results of a survey of 90 shrimp farmers in north-central provinces of Vietnam (Ha Tinh, Nghe An and Thua Thien-Hue). Shrimp production costs mainly by feeding (average 65% of total cost) for different varieties of food between provinces.

30p xau_la 10-02-2012 72 9   Download

A variety of organisms have been investigated to evaluate their potential as biological indicators of different forms of pollution in the aquatic environment (e.g. review by Gunkel 1994). Certain species have been identified as being highly sensitive either in their physiological response to aquatic contaminants or in their ability to accumulate particular toxins in a dose-time dependent manner.

8p nhoxden_20101991 13-06-2011 83 5   Download

Aquaculture, also known as aquafarming, is the farming of aquatic organisms such as fish, crustaceans, molluscs and aquatic plants.[1][2] Aquaculture involves cultivating freshwater and saltwater populations under controlled conditions, and can be contrasted with commercial fishing, which is the harvesting of wild fish.[3] Mariculture refers to aquaculture practiced in marine environments and in underwater habitats.

31p ltanh04 25-05-2010 256 106   Download