Environmental contamination

The primary objective of this study is to elucidate the chemical speciation of copper (Cu) and conduct an assessment of the magnitude and probability of contamination of Cu in soil samples procured from the Pb/Zn mining, at the Hich village, Dong Hy district, Thai Nguyen province, in order to furnish critical data pertinent to the environmental stewardship of soil resources within this geographical domain.

10p viengfa 28-10-2024 2 1   Download

This study determined the heavy metals enrichments and their possible sources in industrial sludges from different sampling time. The results show that industrial sludge exhibits very high pollution for some typical heavy metals, especially Cu and Cd.

10p viyoko 01-10-2024 1 0   Download

The adsorption of Pb2+ ions in solution by synthetic hydroxyapatite material was researched. The effects of adsorption time, adsorbent mass, solution pH, and Pb2+ ion concentration on adsorption properties were investigated. The Pb2+ adsorption efficiency of material can reach 98.7%. Two adsorption isotherm models, Freunlich and Langmuir, were used to evaluate adsorption isotherms.

6p vikwong 29-09-2024 4 1   Download

The rejects and membrane wash water were also treated in the bioreactor, resulted in complete removal of ClO4 ¯ through this approach. This is the first report where biotreatment is adopted as a pre- and post-treatment to membrane process for removing ClO4 ¯ , and this will find field application for treating ClO4 ¯ contaminated ground as well as surface water sources.

8p thebadguys 15-01-2022 10 3   Download

Bayesian kernel machine regression (BKMR) analysis was used to evaluate the univariate contaminant exposure effect as well as the contaminant mixture effects on levels of thyroid hormones. Significant and positive associations were found between total T3 and PC-2 (high positive nickel and cadmium loadings), total T3 and PC-3 (negative association with negative loading for nickel and positive loading for cadmium) and TSH and PC-1 (high positive loadings for organic contaminants).

9p thebadguys 15-01-2022 13 1   Download

The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.

26p extraenglish 24-05-2021 19 3   Download

objectives: To identify the state of heavy metal pollution in water and food in two coastal communes of Thuy nguyen District, Haiphong city in 2017- 2018. To describe the pattern of disease and the risk due to exposure to heavy metal contamination among community residents in the study area.

27p extraenglish 24-05-2021 22 4   Download

This paper presents the experimental results of the effect of microorganism fertilizer (MF) on growth, yield and accumulation of Cu in lettuce grown on soil contaminated by Cu. The results show that applying MF on soil that has a Cu content of 17.03-106.4 ppm has a positive affect on the height, fresh weight, total chlorophyll content and catalase activity of lettuce grown on that soil.

8p tamynhan9 02-12-2020 22 2   Download

As the urban area has high population density and intensive anthropogenic activities, there are a great number of sources of heavy metals in cities, placing a considerable influence on human health. Emissions of heavy metals may come from domestic waste, chemical industry and transportation. These emissions have been continuously adding heavy metals to soils and they will remain present for many years even after the pollution sources have been removed.

7p nguaconbaynhay5 16-05-2020 22 0   Download

Pest control practices in the vegetable crops have been heavily dominated by the routine use of broad-spectrum insecticides to control pests. Concerns have emerged about the adverse consequences of over use of pesticide. These consequences include short and longterm health hazards, contamination and environmental degradation. To minimize the pest losses farmers heavily depend on the chemical pesticides and accessing pest management information from the pesticide dealers due to weak state extension support system.

9p nguaconbaynhay5 16-05-2020 19 3   Download

The research objective of the thesis is to select microorganisms capable of producing laccase, laccaselike from Ba Vi National Forest area, in herbicide / dioxin contaminated soil at Bien Hoa airport. Assessing the ability of decomposing herbicides containing dioxin and reactive dyes by laccase, laccase-like and VSV strains were selected to guide the application in defense activities.

27p xacxuoc4321 11-07-2019 44 5   Download

Some point of view about environmental pollution in long van tu canal main content urgency,bacteriological origin of food,cause appears, affect to the food,impact born in processing food, how to avoid to food not contamination microbiological?,avoid to food contaminated microbiological.

15p vuongsamrua 23-10-2017 107 2   Download

Intrinsic factor (IF) is the gastric protein that promotes the intestinal uptake of vitamin B12 . Gastric IF from animal sources is used in diagnostic tests and in vitamin pills. However, administration of animal IF to humans becomes disadvantageous because of possible pathogenic transmis-sion and contamination by other B12binders. We tested the use of recombinant plants for large-scale production of pathogen-free human recombinant IF. Human IF was successfully expressed in the recombinant plantArabidopsis thaliana....

6p tumor12 20-04-2013 37 3   Download

The increasi1ng level of heavy metals in the water environmental represents a serious threat to human health and ecological systems. These contaminants must be removed from water resources. Various treatment technologies have been developed. In this paper, the potential of removing heavy metals from aqueous solution by using porous aluminosilicate was studied. The solid sorbents were synthesized by reaction of sodium silicate and alumino sulfate with sol-gel method.

5p tuanlocmuido 13-12-2012 61 7   Download

Pesticides are used to protect crops from insects, weeds and diseases both in dryland and irrigated crop production in Viet Nam. However, reliance on pesticides in crop production system has the potential to cause environmental problems due to contamination of waterways and of produce, adversely affecting the Vietnamese environment and human health.

17p tam_xuan 02-03-2012 55 3   Download

HHouseholds coastal aquaculture, ranging in area from 0.5 ha to 3 ha, producing 90% of farmed shrimp production in Vietnam, worth $ 1 billion in 2004. the viability and environmental sustainability of farm economy in this area is threatened poor agricultural practices led to outbreaks of diseases, environmental degradation, plant contaminated with chemicals and antibiotics and reduced output.

39p xau_la 10-02-2012 75 8   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Newly described human polyomaviruses Merkel Cell, KI and WU are present in urban sewage and may represent potential environmental contaminants

5p dauphong3 26-12-2011 40 5   Download

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú yđề tài: Yellow-necked mice (Apodemus flavicollis) and bank voles (Myodes glareolus) as zoomonitors of environmental contamination at a polluted area in Slovakia...

5p coxanh_1 22-10-2011 32 5   Download

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Environmental contamination by vancomycin resistant enterococci (VRE) in Swedish broiler production...

6p coxanh_1 22-10-2011 57 5   Download

The environmental metals of greatest concern are lead, mercury, arsenic, and cadmium. In the past, lead paint was available for use in homes, and lead pipes and/or lead solder delivered water to some homes. As a result, people can be exposed to lead on a daily basis; this exposure is a major pediatric concern. Mercury similarly is a contaminant of our environment; human beings are exposed to mercury in the fish they eat as well as in the amalgam fillings in their teeth.

78p vanass 01-04-2011 62 11   Download