Results 101 to 110 of about 6,961 (257)

Effective autodissemination of pyriproxyfen to breeding sites by the exophilic malaria vector Anopheles arabiensis in semi-field settings in Tanzania [PDF]

open access: yes, 2014
BACKGROUND Malaria vector control strategies that target adult female mosquitoes are challenged by the emergence of insecticide resistance and behavioural resilience.
Devine, Gregor J   +6 more
core   +5 more sources

Ruthenium‐Katalysierte ortho‐Arylierung von Benzoesäuren mit Arylthianthreniumsalzen

open access: yesAngewandte Chemie, Volume 137, Issue 26, June 24, 2025.
Es wurde eine katalytische Ortho‐Arylierungsmethode entwickelt, mit der Arylthianthreniumsalze in Carboxylat‐funktionalisierte Biaryle umgewandelt werden können. Die Carboxylatgruppe kann in situ entfernt oder für eine weitere Derivatisierung verwendet werden.
Kaiping Wang   +9 more
wiley   +1 more source

Effectiveness of Pyriproxyfen and Diflubenzuron Formulations as Larvicides Against Aedes aegypti

open access: yesJournal of the American Mosquito Control Association, 2008
The efficacy of technical pyriproxyfen and diflubenzuron was evaluated at the laboratory level against Aedes aegypti, where we achieved adult emergence inhibition (EI50) values of 0.048 and 1.59 ppb (microg/liter), respectively. We compared these data with values obtained for temephos.
Seccacini, Emilia   +5 more
openaire   +4 more sources

Hemoglobin Levels Modulate Nitrite Toxicity to Daphnia magna

open access: yesScientific Reports, 2018
Nitrogenous compounds enter the environment through various anthropogenic sources. Among these are nitrate (NO3 −) and nitrite (NO2 −) which can oxidize the heme moiety of hemoglobin and reduce the oxygen-carrying capacity of the molecule resulting in ...
Stephanie A. Eytcheson   +1 more
doaj   +1 more source

Ruthenium Catalyzed Ortho‐Arylation Reaction of Benzoic Acids with Arylthianthrenium Salts

open access: yesAngewandte Chemie International Edition, Volume 64, Issue 26, June 24, 2025.
A catalytic ortho‐arylation method has been developed to convert arylthianthrenium salts into carboxylate‐functionalized biaryls, which can be removed in situ or used for further derivatization. This reaction is broadly applicable to (hetero)arenecarboxylic acids, with excellent functional group compatibility and orthogonality to cross‐couplings ...
Kaiping Wang   +9 more
wiley   +1 more source

Three Different Spectrophotometric Methods for Simultaneous Determination of Pyriproxyfen and Chlorothalonil Residues in Cucumber and Cabbage Samples

open access: yesJournal of Spectroscopy, 2019
In this study, three simple and accurate spectrophotometric methods for simultaneous determination of pyriproxyfen and chlorothalonil residues in cucumbers and cabbages grown in experimental greenhouse were studied. The first method was based on the zero-
Shilan A. Omer, Nabil A. Fakhre
doaj   +1 more source

Application of Fast Gas Chromatography–Mass Spectrometry in Combination with the QuEChERS Method for the Determination of Pesticide Residues in Fruits and Vegetables [PDF]

open access: yes, 2013
A fast gas chromatography–mass spectrometry method has been developed for multiresidue determination of up to 56 pesticides in fruits and vegetables in a chromatographic run time of
Beltran Arandes, Joaquin   +3 more
core   +1 more source

Studies on the Susceptibility of Different Developmental Stages of [Bemisia tabaci (Gennadius)] to Pyriproxyfen and Citowett Oil

open access: yesMajallah-i ḥifāẓat-i giyāhān, 2018
Introduction: Bemisia tabaci is highly polyphagous herbivore. This is one of the most important cotton pests throughout the world. Bemisia tabaci causes noticeable damage to quality and quantity of cotton yield.
sedighe ashtari
doaj   +1 more source

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