Results 81 to 90 of about 14,594 (220)

3D Bioprinted Engineered Living Microreactors for Continuous Organophosphorus Compound Degradation

open access: yesSmall Science, Volume 5, Issue 11, November 2025.
3D bioprinted engineered living microreactors offer a novel solution for continuous organophosphorus compound (OPC) degradation. This work details the fabrication and characterization of porous microbial ELM bioreactors containing genetically engineered Escherichia coli for cyclic OPC detoxification.
Mark R. Shannon   +4 more
wiley   +1 more source

Determination of Organophosphorus Pesticides in Groundwater by Gas Chromatography Coupled with Closed Ultrasound Circulating Purge Needle Trap

open access: yesYankuang ceshi, 2015
Based on the merits of solvent-free extraction of gaseous samples by needle trap, closed circulating purge system consisting of needle trap and water sample by peristaltic pump is established to enhance the Henry's law constant of analytes in the gas ...
GAO Song   +6 more
doaj   +1 more source

AN ECONOMIC EVALUATION OF SOYBEAN STINK BUG CONTROL ALTERNATIVES FOR THE SOUTHEASTERN UNITED STATES [PDF]

open access: yes
Methyl parathion or Penncap M (an encapsulated methyl parathion) are used extensively throughout the United States for controlling stink bug pests in soybeans, Glycine Max (L.) Merrill. However, this insecticide is highly toxic to mammals, birds, and non-
Chyen, David   +3 more
core   +1 more source

Effect of Organic Diet Intervention on Pesticide Exposures in Young Children Living in Low-Income Urban and Agricultural Communities. [PDF]

open access: yes, 2015
BackgroundRecent organic diet intervention studies suggest that diet is a significant source of pesticide exposure in young children. These studies have focused on children living in suburban communities.ObjectivesWe aimed to determine whether consuming ...
Aguilar Schall, Raul   +7 more
core  

Urinary concentrations and profiles of organophosphate and pyrethroid pesticide metabolites and phenoxyacid herbicides in populations in eight countries

open access: yesEnvironment International, 2018
Concentrations of nine metabolites of organophosphate and pyrethroid insecticides, as well as two phenoxy herbicides, were determined in 322 urine samples collected from eight countries during 2006–2014 by high-performance liquid chromatography-tandem ...
Adela Jing Li, Kurunthachalam Kannan
doaj   +1 more source

Probabilistic approaches in the effect assessment of toxic chemicals: What are the benefits and limitations? [PDF]

open access: yes, 2018
There is an ongoing discussion whether in the environmental risk assessment for chemicals the so called ‘deterministic' approach using point estimates of exposure and effect concentrations is still appropriate.
Escher, Beate   +3 more
core  

OpdA, a bacterial organophosphorus hydrolase, prevents lethality in rats after poisoning with highly toxic organophosphorus pesticides [PDF]

open access: yes, 2008
Organophosphorus (OP) pesticides poison more than 3,000,000 people every year in the developing world, mostly through intentional self-poisoning. Advances in medical therapy for OP poisoning have lagged, and current treatment is not highly effective with
Adie   +26 more
core   +1 more source

A Framework for assessing in silico Toxicity Predictions: Case Studies with selected Pesticides [PDF]

open access: yes, 2010
In the regulatory assessment of chemicals, the use of in silico prediction methods such as (quantitative) structure-activity relationship models ([Q]SARs), is increasingly required or encouraged, in order to increase the efficiency and effectiveness of ...
LAPENNA SILVIA   +4 more
core   +1 more source

Effects of the organophosphorous methyl parathion on the branchial epithelium of a freshwater fish Metynnis roosevelti

open access: yesBrazilian Archives of Biology and Technology, 2003
Gills are vital structures for fish, since they are the main site for gaseous exchange as well as partially responsible for osmorregulation, acid-basic balance, excretion of nitrogenous compounds and taste. Chemicals in the water may alter the morphology
Marcelo Rubens Machado, Edith Fanta
doaj   +1 more source

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