Results 131 to 140 of about 229,114 (306)

Sanitary Logging in the Monarch Butterfly Biosphere Reserve: One Problem, One Legislation but Different Criteria and Different Treatments

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Bark beetles are small insects that inhabit the bark of trees. When their population increases excessively, they can weaken the trees and cause their death. In México, federal regulations obligate forest landowners to carry out sanitary logging to control bark beetle outbreaks in adherence to official procedures.
Erika Gómez‐Pineda   +3 more
wiley   +1 more source

Modes of entry of petroleum distilled spray-oils into insects: a review [PDF]

open access: yes, 2009
Petroleum oils are some of the oldest and safest pesticides in use. In spite of the numerous improvements achieved in oil technology, the mode of entry and the insecticide action mechanism of these products have been the subject of considerable debate ...
Buteler, Micaela, Stadler, Teodoro
core  

Effect of Anabaena sp. PCC7120 on the Tolerance of Rice (Oryza sativa L. cv Maratelli) Seedlings Against Lindane

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Lindane (γ‐hexachlorocyclohexane, γ‐HCH) is a broad‐spectrum pesticide widely used since the 1950s until its inclusion in the Stockholm Convention list of Persistent Organic Pollutants (POPs) in 2009, together with other HCH isomers. The high persistence and mismanagement of the toxic wastes generated during its synthesis have led to serious ...
Giuliana Oriana Morabito   +4 more
wiley   +1 more source

Incidence of Trypanosoma cruzi infection in two Guatemalan communities.

open access: yes, 2004
The prevalence of human infection by Trypanosoma cruzi was assessed using an enzyme-linked immunosorbent assay (ELISA) in a serological survey in 1998 of 2 rural communities (SMH and PS) in Guatemala.
Davies, C   +6 more
core   +1 more source

Chemical Ionization Mass Spectrometry: Fundamental Principles, Diverse Applications, and the Latest Technological Frontiers

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The review examines the evolution of chemical ionization mass spectrometry (CI‐MS), a technique developed in 1966 by Field and Munson. CI is a soft‐ionization method that produces more intense molecular ions with less fragmentation than electron ionization (EI).
Malvika Dutt   +4 more
wiley   +1 more source

The retail market for bednets in Kenya: how well is it working? [PDF]

open access: yes, 2002
This repository item contains a single issue of the Health and Development Discussion Papers, an informal working paper series that began publishing in 2002 by the Boston University Center for Global Health and Development.
Larson, Bruce, Rosen, Sydney
core   +1 more source

“Tremble, pests”: Insect natural enemy‐induced changes in pests before attack and their implications for biological control

open access: yesNew Plant Protection, EarlyView.
Abstract Insect natural enemies, encompassing predators and parasitoids, serve as vital regulators of pest populations and architects of ecosystem balance. Most studies on natural enemies have focused on understanding the mechanisms by which these insects eliminate pests after an attack.
Yaoyao Chen   +3 more
wiley   +1 more source

A highly sensitive β-AKBA-Ag-based fluorescent “turn off” chemosensor for rapid detection of abamectin in tomatoes

open access: yesGreen Processing and Synthesis
This study presents the synthesis of a sensitive AKBA-Based fluorescent “Turn off” chemosensor for rapid detection of abamectin residues in tomatoes. Silver nanoparticles were synthesized by using 3-O-acetyl-11-keto-β-boswellic acid (β-AKBA) by chemical ...
Ahmad Touqeer   +8 more
doaj   +1 more source

BACTERIAL INSECTICIDES [PDF]

open access: yesBacteriological Reviews, 1960
A M, HEIMPEL, T A, ANGUS
openaire   +2 more sources

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