Results 171 to 180 of about 331,005 (337)

Larvicidal Activity of Phytochemicals From Handroanthus impetiginosus Seeds Against Culex quinquefasciatus

open access: yesChemistry &Biodiversity, EarlyView.
The hexane extract was obtained from the seeds of H. impetiginosus, from which fatty acids and FAMEs were obtained. The three samples were tested on C. quinquefasciatus larvae, promoting mortality with moderate LC50 values. The hexane extract was analyzed by gas chromatographymass spectrometry (GC‐MS), and the most abundant compounds were ethyl oleate (
Luana Cristina Diniz Santos   +6 more
wiley   +1 more source

Impact of Species, Growth Conditions, and Plant Processing on the Phytochemistry and Antimicrobial Activity of Agrimonia Extracts

open access: yesChemistry &Biodiversity, EarlyView.
Agrimony is a medicinal herb known for its content of polyphenols and beneficial bioactivity, both of which can be strongly influenced by cultivation and processing. This study reveals that agrimony plant structures, species, and postharvest processing are the main drivers of observed variability in both phytochemical composition and antimicrobial ...
Anna Loučková   +7 more
wiley   +1 more source

Tunable H2/Syngas Production by Chemical Looping Reforming of Methane over La0.6Sr0.4MxM’1‐x(M,M’ = Fe, Mn, Co)O3 Perovskites

open access: yesChemCatChem, EarlyView.
B substitution in La0,6Sr0,4BxB'1‐xO3 perovskite materials for chemical looping reforming of methane is systematically studied by TPR/TPO experiments. Results suggest a positive effect of Mn on Fe‐based perovskites. Moreover, a novel 3‐step cycle leading to two syngas streams and one pure hydrogen stream is proposed and experimentally verified ...
Stefano Scognamiglio   +5 more
wiley   +1 more source

Dynamic Molten Cu–In Droplets Catalyze Selective Synthesis of Multi‐Walled Carbon Nanotubes During Methane Pyrolysis

open access: yesChemCatChem, EarlyView.
Isolated molten Cu–In alloy nanodroplets are shown to grow highly selective multi‐walled carbon nanotubes (MWCNTs) during clean H2 production via methane pyrolysis. The droplets exhibit a dynamic geometry during MWCNT growth, elongating, and growing smooth and bamboo‐like MWCNTs.
Sawyer d'Entremont   +4 more
wiley   +1 more source

Tsutsugamushi Disease (Scrub Typhus, Mite-borne Typhus) in New Guinea

open access: green, 1945
Francis G. Blake   +4 more
openalex   +2 more sources

Handlungsempfehlungen für integratives Ressourceneffizienzmanagement in KMU der chemischen Industrie Guidelines for Integrative Resource Efficiency Management in Chemical SMEs

open access: yesChemie Ingenieur Technik, EarlyView.
Ein integrativer Managementansatz unterstützt KMU der chemischen Industrie dabei, Ressourceneffizienz und Kreislaufwirtschaft systematisch umzusetzen. Digitale Tools, Bewertungsansätze und Technologiescouting fördern praxisnahe Lösungen und stärken nachhaltige Unternehmensstrategien.
Ingela Tietze   +8 more
wiley   +1 more source

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