Results 71 to 80 of about 111,895 (309)

An Experimental Hut Evaluation of Olyset Nets against Anopheline Mosquitoes after Seven years use in Tanzanian Villages. [PDF]

, 2008
Long-lasting insecticidal nets (LLINs) are advocated by WHO for protection against malaria. Of the three brands of LLINs currently approved by WHO, Olyset(R) is the only one currently granted full recommendation.
Curtis, Christopher F, Magesa, Stephen M, Magogo, Frank S, Malima, Robert C, Maxwell, Caroline, Mosha, Frank W, Mwingira, Victor, Rowland, Mark, Sudi, Wema, Tungu, Patrick K   +9 more
core   +4 more sources

Perceived importance and didactic difficulty of chemistry education: Insights from Czech teachers

The Curriculum Journal, EarlyView.
Abstract This empirical study examines how chemistry teachers in lower and upper secondary schools in the Czech Republic evaluate the content of the chemistry curriculum, focussing on its perceived importance and didactic difficulty. Based on a quantitative survey (N = 146), the study provides insight into the pedagogical content knowledge of ...
Jitka Lorenzová, Blanka Jirkovská, Martin Čapek Adamec, Jan Havlík, Petr Holzhauser, Daniela Nováková, Karel Němejc   +6 more
wiley   +1 more source

PENGEMBANGAN TEKNOLOGI FORMULASI INSEKTISIDA NABATI UNTUK PENGENDALIAN HAMA SAYURAN DALAM UPAYA MENGHASILKAN PRODUK SAYURAN SEHAT

Jurnal Ilmu Pertanian Indonesia, 2011
The use of synthetic insecticide for pest management to protect insect attacking the holticulture product have been done intensivelly and seems not wise which predicted could cause a negative impact to the environmental and human health.
Dadang, Djoko Prijono
doaj  

Insecticide-mediated shift in ecological dominance between two competing species of grain beetles.

PLoS ONE, 2014
Competition is a driving force regulating communities often considered an intermittent phenomenon, difficult to verify and potentially driven by environmental disturbances.
Erick Maurício G Cordeiro, Alberto S Corrêa, Raul Narciso C Guedes   +2 more
doaj   +1 more source

Nanofiber PVA‐Based Membranes Incorporating Functionalized Spanish Broom Derivatives for Sustainable Water Purification

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study investigates Spanish broom (Spartium junceum) as a renewable source for electrospun composite membranes in sustainable water purification. MCC and biochar were functionalized with eco‐friendly precursors and nanomaterials (i.e., HNT, β‐CDs) to develop hybrid PVA nanofiber composites.
Giulia Rando, Silvia Sfameni, Jozefien Geltmeyer, Alessandra Palella, Lorenzo Spadaro, Alberto Riminucci, Karen De Clerck, Maria Rosaria Plutino   +7 more
wiley   +1 more source

Zooprophylaxis as a control strategy for malaria caused by the vector Anopheles arabiensis (Diptera: Culicidae) : a systematic review [PDF]

, 2017
Background: Zooprophylaxis is the use of wild or domestic animals, which are not the reservoir host of a given disease, to divert the blood-seeking malaria vectors from human hosts.
Asale, Abebe, Devleesschauwer, Brecht, Duchateau, Luc, Huisman, Gerdien, Yewhalaw, Delenasaw   +4 more
core   +2 more sources

Toxicity of Natural Insecticides on Leptocorixa acuta

Tropical Plantation Journal, 2022
The basic concept of organic farming prevents synthetic chemical compounds from using fertilizers, pesticides, and growth regulators. Natural insecticides are alternative pesticides in pest control on plants because they are available around us and have a good impact on the sustainability of the agricultural environment.
Elisabeth Nanik Kristalisasi, Badiatud Durroh, Endah Puspitojati, Bayu Adirianto   +3 more
openaire   +1 more source

Total Synthesis of rac‐Keramamine C Enabled by Intrinsic H‐Bond‐Induced Conformational Fixation of Amides

European Journal of Organic Chemistry, EarlyView.
The total synthesis of the manzamine alkaloid keramamine C (2) in its racemic form was achieved in 5 steps, with ring‐closing metathesis as the key step. The metathesis is strongly improved by an intramolecular H‐bond‐induced conformational fixation of the amide bond, inducing close proximity of the terminal double bonds in the precursor molecule.
Jana Ganzmann, Ryan Thurston, Pascal Riester, Nina Hegmann, Markus R. Heinrich   +4 more
wiley   +1 more source

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Monitoring resistance of Cydia pomonella (L.) Spanish field populations to new chemical insecticides and the mechanisms involved [PDF]

, 2017
BACKGROUND: A widespread resistance of Cydia pomonella to organophosphates was demonstrated in populations from the Spanish Ebro Valley area that showed high levels of enzymatic detoxification.
Avilla Hernández, Jesús, Bosch Serra, Dolors, Rodríguez García, Marcela   +2 more
core   +3 more sources