Water environment

The tropical water environment faces increasing exposure to temperature extremes and contaminants stemming from human activities. Elevated temperatures and pollution levels in rivers and ponds have the potential to induce cumulative impacts on the diversity of aquatic ecosystems. However, the combined effects of these environmental changes on the life cycle of the Eucyclops euacanthus copepod, a bioindicator of aquatic ecosystem remain understudied.

9p vimitsuki 06-05-2025 1 1   Download

Water quality plays an immensely significant role in safeguarding the health of humans and other species on the planet. Polluted water sources can contain harmful substances such as heavy metals, pesticides, bacteria, and viruses, which can pose threats to human health and other organisms. Water quality is also a crucial factor in protecting the environment and sustaining the ecosystems of freshwater and marine environments. Polluted water sources can impact the lives of aquatic animals and plants, causing harm and endangering biodiversity by disrupting the food chain.

11p viuzumaki 28-03-2025 5 1   Download

Microplastics are regarded as an emerging threat to water and other environments. The increasing use of plastics in agricultural cultivation has led to higher risks and more dangerous pollution of agricultural water. However, microplastics in agricultural water in Vietnam have neither been studied nor documented in any publication.

13p viaburame 14-03-2025 8 1   Download

Saigon river is also polluted by industrial and agricultural waste water from small-sized enterprises along the river which is to 65.000 cubic meters a day. Residential waste water another pollution factor. Everyday, 74.800 cubic meters of waste water in dumped into the river from residential in localities, with over 90% of the waste coming from Hồ Chí Minh city.

62p tet0202 19-02-2013 45 5   Download

Design Philosophies: Radiological release to the environment is prevented by maintaining R/B pressure negative(-63Pa). Radioactive substance in PCV are removed and captured in the filter device.R/B Closed Cooling Water System (RCW) / Reactor Service Water System (RSW) How are the many Heat exchangers cooled down?

33p giotletinh_hd2009 14-10-2013 93 8   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 16 3   Download

tudy the relationship of natural environment factors and the mangroves ecosystem at Ong Trang islet in order to contribute to biodiversity conservation, ecosystem preservation, sustainable development of mangroves under tidal influence of the East sea and the West sea, and climate change response.

26p guitaracoustic02 08-12-2021 28 1   Download

Overall objectives: Research and propose the solutions to treat straw in the field so that reducing on-field rice straw burning and improving the soil properties in intensive rice soil.

25p guitaracoustic02 08-12-2021 28 3   Download

The quantity of rice straw and straw management survey only did in WinterSpring and Fall-Winter crops in An Giang, Dong Thap, Kien Giang province and Can Tho City. The research focused on the evaluation of simply biological pretreatment, material size and mixing rate of rice straw/hyacinth with pig manure in anaerobic batch and semi-continuous condition in vitro; trial producing biogas in polyethylene digester type (PE) in household scale in vivo

24p beloveinhouse10 28-11-2021 20 3   Download

Objectives of the study: Assessing the situation of catfish farming in some areas of the Mekong Delta as a basis for proposing measures to manage waste from catfish ponds; the survey and analysis in catfish ponds to assess the composition and characteristics; assessing the pollutants load of waste water from catfish ponds; assessing the possibility of wastewater treatment from catfish ponds and benefits of environmental when using wastewater for irrigating paddy fields.

26p beloveinhouse10 28-11-2021 28 3   Download

Research purposes: To establish indicators of WRS for river basins in Viet Nam which are appropriate to charateristics and water use of basins; To use the proposed indexs to assess WRS for typical regions in Ma river basin; subsequently, proposing oriented solutions to make WRS feasible and appropriate to real conditions.

27p hobbsandshaw 09-06-2021 18 4   Download

Research objectives of the thesis: The thesis was conducted to research and develop a new type of electrode: glass charcoal electrodes modified by flower platinum nano (PtNFs/GC) and to evaluate the properties of fabricated electrodes: electrode structure, morphology, physical and chemical properties.

28p extraenglish 24-05-2021 32 4   Download

The research goals of the thesis: Preparation and characterization of activated carbon products denaturated by surface oxidation technics. Determination of cation exchange capacity of the materials. Investigation of Mn and Fe linking on surface of prepared materials to form a new adsorption material for effective removing hazard anions in water environment.

26p extraenglish 24-05-2021 32 2   Download

Summary of Environmental engineering doctoral thesis: Investigation of activated carbon denaturation in order to create material for treatment of several hazard ions in water environment

26p capheviahe27 23-02-2021 29 6   Download

Studying and orienting applicability to detecting, quantifying separately and simultaneously cadmium, lead in aqueous environment by means of stripping voltammetry method with the desire that the nanostructures of the electrodes help increase the sensitivity of the analytical method.

28p capheviahe26 25-01-2021 35 4   Download

Study the structural, morphological and physicochemical properties of synthetic materials by modern physical and chemical methods such as XRD, FTIR, SEM, TEM, XPS, EDX, BET, TG-DTA, UV -Vis; evaluation of photochemical catalyst using visible light in the decomposition of dyes RR-195, RY-145 on synthetic materials.

27p capheviahe26 25-01-2021 49 3   Download

Alkaline pulping liquors are the problematic for environment due to their toxicity and poor biodegradability. During last decade, anaerobic treatment technology has been successfully applied to various types of pulp and paper industry effluents. In the present study, the treatment of highly toxic pulping liquors in lab-scale has been done using sulfate reducing bacteria (SRB) isolated from sediment samples of pulp and paper mills in Vietnam. This treatment could reduce 70 - 75% of COD after three weeks. The COD removal could achieve 82 - 88% by subsequent aerobic treatment in 48 hours.

7p 12120609 01-06-2020 10 1   Download

An effective and expeditious method of the synthesis of a highly functionalized piperidines, catalyzed by nontoxic, recyclable and environment friendly sodium lauryl sulfate (SLS), via one-pot multi-component condensation of aldehydes, amines and β-ketoesters in water at room temperature, has been developed.

8p tocectocec 25-05-2020 13 3   Download

This dissertation aims at developing accurate and efficient approaches of 8 designing shallow UWA channel simulators based on the measurement data of the real UWA channel in a specific shallow water environment.

128p cotithanh000 07-10-2019 12 2   Download

The thesis aims to establish scientific and practical arguments in proposing measures to rationally use and protect underground water resources on the basis of analyzing, evaluating and estimating the impacts of geographic factors. natural, socio-economic, environmental, climate change and sea level rise in Gio Linh and Quang Tri regions.

26p xacxuoc4321 09-07-2019 55 3   Download