The study analyzed the effects of pesticides on selected vegetable crops grown in Abakaliki, Ebonyi State Nigeria. pesticide Dichlorvos (DD Force) was used to treat sites planted with Amaranth, cucumber, and okra. Soil samples were randomly collected after 30 days incorporation tested for traces chloride phosphate. results analysis showed that amaranth, okra residue concentration exceeded maxim...

We explore two themes in formal learning theory. We begin with a detailed, general study of the relationship between the generalization error and stability of learning algorithms. We then examine ensemble-based learning from the points of view of stability, decorrelation, and threshold complexity. A central problem of learning theory is bounding generalization error. Most such bounds have been ...

Our goal was to determine whether chlorpyrifos oxon, dichlorvos, diisopropylXuorophosphate (DFP), and sarin covalently bind tohuman albumin. Human albumin or plasma was treated with organophosphorus (OP) agent at alkaline pH, digested with pepsin at pH2.3, and analyzed by matrix-assisted laser desorption/ionization time-of-Xight (MALDI-TOF) mass spectrometry. Two singly chargedpeaks...

Biochemical indices were investigated for their potential use as variables of sublethal toxicity in Daphnia (cholinesterase) and Chironomus (cholinesterase and biotransformation enzymes). Parathion, dichlorvos, and aldicarb caused dose-related inhibition of cholinesterase (ChE) in 24-h bioassays with both species. Ratios of Daphnia and Chironomus ChE IC50 values to corresponding immotility EC50...

The continuous effects on Acetylcholinesterase (AChE) activity of medaka (Oryzias latipes) caused by dichlorvos, methomyl and deltamethrin in vivo were investigated, and the trends of AChE activity inhibition due to the influence of these insecticides were discussed. The LC50-24h of dichlorvos, methomyl and deltamethrin on medaka were 2.3 mg/L, 0.2 mg/L, and 2.9×10(-3) mg/L respectively. The re...

The presence of organophosphate pesticides could inhibit the activity alpha-naphthyl acetate esterase (ANAE), which use as fundamental for biosensor applications. k-carrageenan was used immobilization ANAE extracted from wheat-based sources. free and immobilized assessed optimum at a range temperature pH. Enzyme kinetic studies were performed using Michaelis-Menten parameters Lineweaver-Burk, L...