Results 61 to 70 of about 66,802 (282)

Do topical repellents divert mosquitoes within a community? Health equity implications of topical repellents as a mosquito bite prevention tool. [PDF]

, 2013
OBJECTIVES: Repellents do not kill mosquitoes--they simply reduce human-vector contact. Thus it is possible that individuals who do not use repellents but dwell close to repellent users experience more bites than otherwise.
DC Chavasse, Elizabeth Louise Turner, Emmanuel Titus Simfukwe, GF Killeen, JA Scott, John Vontas, LW Cohnstaedt, M Ditzen, M Rowland, Marta Ferreira Maia, Max Thele, MF Maia, N Hill, RW Steketee, Sangoro Peter Onyango, Sarah Jane Moore, SE Clarke, SJ Moore, SJ Moore, SP Carroll, SW Lindsay, TW Scott, Y Geissbühler   +22 more
core   +3 more sources

Asymmetric Reduction of Unactivated Alkenes

Chemistry – A European Journal, EarlyView.
Unactivated alkenes rank among the most inert functional groups in synthesis and their selective reduction remains challenging. This Review charts the evolution from classical metal‐catalyzed hydrogenation to radical hydrogen atom transfer (HAT) and emerging biocatalytic concepts, highlighting how complementary mechanistic strategies, including the ...
Nico D. Fessner, Sebastian Roth, Richard Niese, Michael Müller   +3 more
wiley   +1 more source

Evolution of the Yields and Composition of Essential Oil from Portuguese Myrtle (Myrtus comunis L.) through the Vegetative Cycle

Molecules, 2009
The chemical composition of the essential oil of Portuguese myrtle was determined at different developmental stages of the plant: pre-flowering, flowering, unripe and ripe berries.
M. Gabriela Bernardo-Gil, Maria-João Cebola, Paula C. Pereira   +2 more
doaj   +1 more source

Chemical Composition, and Antioxidant and Cholinesterase Inhibitory Activities of Lindera glauca Fruit Essential Oil and Molecular Docking Studies of Six Selected Compounds

Horticulturae, 2023
Lindera glauca is a shrub or small tree mostly distributed in China, Japan and Korea. However, reports on the biological activities of Lindera glauca fruit essential oil (LGFEO) are limited.
Zhenchun Sun, Xiankun Su, Yechun Lin, Chongyan Long, Yazhou Zhang, Tianming Zhao   +5 more
doaj   +1 more source

Chemical Composition and in Vitro Evaluation of the Antioxidant and Antimicrobial Activities of Eucalyptus gillii Essential Oil and Extracts [PDF]

, 2012
In this study, essential oil and various extracts (hexane, petroleum ether, acetone, ethanol, methanol and water) of Eucalyptus gilii were screened for their chemical composition, antimicrobial and antioxidant activities.
Ahmed Lebrihi, Arvouet-Grand, Brooke, Cheng, Damjanovic-Vratnica, Dorsaf Ben Hassine, Florence Mathieu, Folin, François Couderc, Giamakis, Jaimand, Jalloul Bouajila, Manef Abderrabba, Naczk, Pittman, Rahman, Sikkema, Singab, Sonboli, Ultee, Yan Yvon   +20 more
core   +5 more sources

On the Reaction Mechanism of Nitrate Radical and DMPO in Non‐aqueous Photocatalytic Media

Chemistry – A European Journal, EarlyView.
This work identifies 2‐oxo‐5,5‐dimethyl‐1‐pyrroline 1‐oxyl (DMPOX), formed via the selective oxidation of 5,5‐dimethyl‐1‐pyrroline N‐oxide (DMPO) by nitrate radicals (NO3•) in nonaqueous media, as a distinctive EPR fingerprint of NO3•. The DFT‐supported mechanism clarifies its formation pathway and highlights DMPOX detection as a robust tool for ...
Alessandro Gottuso, Alessia Zollo, Leonardo Palmisano, Stefano Livraghi, Francesco Parrino   +4 more
wiley   +1 more source

Preparação do (+)-±-terpineol a partir do (+)-limoneno: monoterpenos de odor agradável em um projeto para química orgânica experimental Preparation of (+)-±-Terpineol from (+)-limonene: monoterpenes with pleasant odor in a project for undergraduate organic chemistry laboratory

Química Nova, 2009
A synthesis of (+)-±-terpineol from (+)-limonene was proposed as a project for undergraduate organic laboratory course. Terpineol is a useful flavor and fragrance compound, and several aspects of this preparation are suited for experimental organic ...
Lúcia Helena Brito Baptistella, Paulo Mitsuo Imamura, Leandro Vilela de Melo, Cláudio Castello   +3 more
doaj   +1 more source

Enzymatic Hydrolysis of Textile and Cardboard Waste as a Glucose Source for the Production of Limonene in Escherichia coli

Life, 2022
Cellulose containing textiles (cotton) and cardboard/carton waste represent a large reservoir of untapped organic carbon. These wastes have enormous potential for use as carbon feedstock in industrial biotechnological processes.
Žiga Zebec, Mojca Poberžnik, Aleksandra Lobnik   +2 more
doaj   +1 more source

Catalyst-Free Epoxidation of Limonene to Limonene Dioxide [PDF]

ACS Sustainable Chemistry & Engineering, 2018
Limonene dioxide is a platform molecule for the production of new biopolymers. First attempts at limonene epoxidation were made by using low-coordination titanium supported on SBA-16 as the catalyst using tert-butyl hydroperoxide as the oxidizing agent, but no limonene dioxide was obtained. When limonene was substituted by 1,2-limonene oxide, the yield
Luc Charbonneau, Xavier Foster, Dongyuan Zhao, Serge Kaliaguine   +3 more
openaire   +2 more sources

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source