Pesticides

Bài 6 Độc học hóa chất bảo vệ thực vật (Pesticides) thuộc bài giảng Độc tố học môi trường, sẽ trình bày lịch sử của độc học hóa chất bảo vệ thực vật, các công ty hóa chất bảo vệ thực vật hàng đầu thế giới, tác động của hóa chất bảo vệ thực vật đối với môi trường,...Mời các bạn cùng tham khảo nội dung kiến thức cụ thể trong bài.

22p luongmylm 24-03-2014 160 37   Download

The objectives of the dissertation: The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

27p extraenglish 24-05-2021 14 4   Download

The objects of this study is the use of pesticides of the farmers in the Mekong River delta. The respondents are the farmer households who have planted rices for three years up to the interview date.

44p kethamoi12 15-05-2021 18 3   Download

The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

27p capheviahe27 23-02-2021 17 4   Download

Develop a rapid and simple method for analysis of multi-residue pesticides, including organophosphate, organochlorine, carbamate, and pyrethroid compounds in soil, with sample preparation based on QuEChERS technique and determination by GC-MS.

26p capheviahe26 25-01-2021 32 4   Download

Successfully synthesized nano – mixed oxide by different gelling agents; compared, selected the appropriate gelling agent; researched to evaluate the catalytic activity of mixed oxide nanoparticles formed with pollutants methyl orange (MO), methylene blue (MB). Successful dispersed mixed oxide nanoparticles on rGO; investigated catalytic activity of material systems on parathion, fenitrothion.

28p capheviahe26 25-01-2021 33 5   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 20 3   Download

The objectives of the thesis: Research and fabricate the one-dimensional (1D) – nanoporous silicon microcavity (1D-NPSMC) structures by using electrochemical etching method with the selectivity of wavelength in visible range from 200 nm to 800 nm.

28p xacxuoc4321 09-07-2019 31 5   Download

Contents: Main issues, Options for Pesticide Handling Areas, Sizing, Management and operation, Likely costs, Final water disposal.

42p aicap2017 21-03-2017 34 5   Download

Researching this thesis with a view to: describe the knowledge, attitude and practice (KAP) of farmer exposure to pesticides; determine disease model and describe some factors related to farmer health in cultivating tea; construction and appreciate of effect of interfere model on human health protection suitably for current conditions in Thai Nguyen.

24p nguyenthiminh32 12-07-2014 131 5   Download

Human butyrylcholinesterase (BChE; EC 3.1.1.8) is of particular interest because it hydrolyzes or scavenges a wide range of toxic compounds including cocaine, organophos-phorus pesticides andnerveagents.The relative contribution of each N-linked glycan for the solubility, the stability and the secretionof the enzymewas investigated. Arecombinant monomeric BChE lacking four out of nine N-glycosylation sites and the C-terminal oligomerization domain was stably expressed as a monomer in CHO cells.

8p research12 23-04-2013 29 4   Download

The effects of pesticide contamination on the metabolism of marine mol-luscs are poorly documented. We investigated the response of a marine bivalve, the Pacific oyster,Crassostrea gigas, using a suppression subtrac-tive hybridization method to identify up- and down-regulated genes after a 30-day exposure period to herbicides (a cocktail of atrazine, diuron and isoproturon, and to the single herbicide glyphosate). A total of 137 unique differentially expressed gene sequences was identified, as well as their asso-ciated physiological process....

14p awards 05-04-2013 47 2   Download

The earth’s surface is two-thirds water, yet most of this is undrinkable or unusable because it is either seawater or ice. Of the 1% that is available as fresh water, most is used for farming or industry. Fresh water pollution is the major problem because many rivers and streams are being polluted with pesticides, industrial waste, and sewage. In poor and developing countries, the addition of sewage to the sources of water leads to diseases, and even death. A United Nations’ report estimates that more than 78% of people drink from polluted water supplies.

7p rrtrungrr11 27-03-2013 354 23   Download

Exploiting specific targets is of specific interest in developing eco-friendly pesticides. We isolated, purified and characterized a novel b-N-acetyl-d-hexosaminidase (OfHex1) from the fifth instar larva integument of the Asian corn borer,Ostrinia furnacalis(Guene´e). OfHex1 was purified 1468-fold to homogeneity with an activity yield of 20% by four column chroma-tography steps.

13p vinaphone15 28-02-2013 34 4   Download

The neurotransmitter dopamine has been shown to inhibit fibrillation of a-synuclein by promoting the formation of nonamyloidogenic oligomers. Fibrillation ofa-synuclein is accelerated in the presence of pesticides and the neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP).

11p cosis54 05-01-2013 65 2   Download

In Mekong delta, mangrove forest distributes along the coastline of 700 km and it is a homeland for mud crab in tropical areas. The mud crab becomes potential to be alternative species from failed shrimp farming. Particularly, mud crab hatchery has been introduced and operated recently at Bac lieu, Tra vinh, Soc Trang, Ben Tre, Kien giang and Ca mau provinces. However, the survival from zoea stage to crablet stage 1 is low at approximately 5%. In addition, like shrimp rearing, the mud crab hatchery is using antibiotic as major treatment to prevent bacteria and fungi.

8p tam_xuan 02-03-2012 70 4   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 56 3   Download

Detailed assessment of impacts of more than 50 Farmer Field Schools (FFS) in 11 provinces through which over 2,000 farmers were trained from 2005 to 2006 has shown many beneficial effects. Farmers have increased knowledge and their skills in planting and protecting citrus trees and at the same time they have increase awareness of the recording and post-harvest storage, marketing and especially the changes in farming practices significantly after participating in FFS.

12p tam_xuan 02-03-2012 64 7   Download

Organo-Chlor GROUP Thuốc trừ sâu hóa học đã có sẵn sau khi chiến tranh thế giới thứ II. - DDT là sản phẩm đầu tiên. - Các thuốc trừ sâu hữu cơ-Chlor đã được sau đó sản xuất. Chúng bao gồm C, H, O, S và Cl.

69p xinh_la 01-03-2012 53 12   Download

Cashew is an important crop in Vietnam, and the government has assigned the development as a national priority gia.Nang cashew productivity has been increased since 2002, but the widespread use pesticides has caused health problems for farmers, animals and the environment. Article IPM program using ants as a key component in the development of Charles Darwin University (CDU) does not use toxic pesticides, but high-yield results. This project is using the CDU of IPM to develop and implement an IPM program that will work in conditions of Vietnam....

10p xinh_la 10-02-2012 70 7   Download