Chemical Pesticides: Mode of Action and Toxicology - Chapter 6 ppsx

... the name (RS )-3 -allyl-2-methyl-4-oxocyclo- pent-2-enyl(1R,3R )-2 ,2-dimethyl- 3-( 2-methylprop-1-enyl)cyclopropanecar- boxylate from the International Union of Pure and Applied Chemistry (IUPAC). ... is isolated and called lindane or gamma-HCH. The synthesis gives 10 to 45% alpha-, 5 to 12% beta-, 3 to 4% delta-, and only 10 to 14% of the useful Figure 6. 3 A simplified diag...

Ngày tải lên: 11/08/2014, 12:21

... the law of mass action, and our knowledge of the nature of the chemical processes in organisms, we can condense biochemical toxicology to three sentences, and about seven types of reactions: 1. ... Stenersen  2.2.2 Dose and effect The law of mass action tells us that the amount of reaction products and the velocity of a chemical reaction increase with the conce...

Ngày tải lên: 11/08/2014, 12:21

... soybeans, peanuts, and rice, which are more or less tolerant to this herbicide. Bifenox, fluoroglycofen-ethyl, HC-252, lactofen, and oxyfluorfen have analogous structures and modes of action. The carboxyl ... representation of photosynthesis and the site of action of D 1 blockers and paraquat. Figure 3.8 Schematic representation of the redox cycle of plastoquinone. Mn 2...

Ngày tải lên: 11/08/2014, 12:21

... of feeding of Lepidoptera larvae and paralysis of the gut that retards the passage of food and allows the spores to germinate. The larvae suffer a general paralysis and die. Bt israelen- sis-treated ... proteins, and their function and versatility for insect control have yet to be elucidated. 4.1 The mechanism of action of δ-endotoxins As mentioned, the δ-endotoxin (Cr...

Ngày tải lên: 11/08/2014, 12:21

... diphospate-2-acetamido-2-deoxy-D-glucose, which is the substrate for chitin synthetase, and inhibit the incorporation of 2-aceta- mido-2-deoxy-D-glucose into chitin. It is produced by fermentation of ... chloroplasts. Naturally the reactions involved in the synthesis of 5-enolpyru- voyl-shikimate-3-phosphate and its inhibition by glyphosate have been stud- ied extensively, and man...

Ngày tải lên: 11/08/2014, 12:21

... example of adaptation of micro- flora to (2-methyl-4-chlorophenoxy) acetic acid (MCPA) and (2,4-dichloro- phenoxy) acetic acid (2,4-D). Soils from lots that had been treated with herbi- cides ... and involves binding of the substrate to the enzyme, oxidation of Fe +++ to Fe ++ , change of the valence electrons of Fe ++ from low-spin to high-spin orbital, binding of oxygen t...

Ngày tải lên: 11/08/2014, 12:21

... is of great eco- nomic importance and is cross-resistant to parathion-methyl and profenofos, but not to chlorpyrifos. It has an acetylcholinesterase with low sensitivity to paraoxon-methyl and ... Organophosphates and Carbamates in Predacious Mite, Amblyseius poten- tillae (Garman). Faculty of Biology, Department of Pure and Applied Ecology, Uni- versity of Amsterdam, Amster...

Ngày tải lên: 11/08/2014, 12:21

... (Norwegian standard) Kaptan Chemical Names Chemical Abstracts (CA) 3a,4,7,7a-tetrahydro- 2-[ (trichloromethyl)thio ]-1 H -isoindole-1,3(2 H )- dione International Union of Pure and Applied ... co-metabolism 167 8.2.3 Kinetics of degradation 167 8.2.4 Importance of chemical structure for degradation 168 8.2.5 Examples 169 8.2.5.1 Co-metabolism and adaptatio...

Ngày tải lên: 03/04/2014, 12:11

... is 165 7.2 N·m/s and the width of the channel is 10 cm. Cal- culate the rate of inflow into the jump. The temperature of the water is 25°C and the downstream depth of the jump is 0.94 m. 6. 23 ... Thus, assuming a depth of 5 m and letting L represent the length of tank, Width and depth of compartment no.1 = width and depth of compartment no. 2 = width and depth of...

Ngày tải lên: 11/08/2014, 10:22

... X/M [C ]/X/M 1 0.25 6. 0 0.0 76 78.95 2 0.32 1.0 0.075 13.33 3 0.5 0.25 0.0495 5.05 4 1.0 0.09 0.0249 3 .61 5 1.5 0. 06 0.0 166 3 .61 a 3 0.09 0. 06+ ()2 6. 0 1.0 0.25++()– 3 3 .61 3 .61 +()2 78.95 13.33 ... rejection ions Ca 2+ SO 2- Na + H 2 0Na + Cl - H 2 0Na + Cl - H 2 0 H 2 0Na + Cl - H 2 0Na + Cl - H 2 0 H 2 0Na + Cl - H 2 0Na + Cl - H 2 0 H 2 0Na + Cl...

Ngày tải lên: 11/08/2014, 10:22