Results 101 to 110 of about 277,381 (319)

Les esters en cosmétologie : généralités et fonctionnalités

open access: yesOléagineux, Corps gras, Lipides, 2004
Esters belong to the large family of lipids where they are famous for their role as emollients. After briefly talking about their synthesis, we will study their functionality and particulary their different uses as « émollient, émulsifiant, et co ...
Loubat-Bouleuc Nathalie
doaj   +1 more source

The Regular Interaction Pattern among Odorants of the Same Type and Its Application in Odor Intensity Assessment

open access: yesSensors, 2017
The olfactory evaluation function (e.g., odor intensity rating) of e-nose is always one of the most challenging issues in researches about odor pollution monitoring.
Luchun Yan   +4 more
doaj   +1 more source

Formation of Chiral alpha-Monofluorinated-beta-amino Esters through Organocatalytic Asymmetric Reduction of alpha-Fluoro-beta-enamino Esters by Trichlorosilane

open access: yes, 2012
A concise method was developed to prepare chiral alpha-monofluorinated-beta-amino esters through N-sulfinyl urea catalyzed asymmetric hydrosilylation of alpha-fluoro-beta-enamino esters, which affords high yields, good to high diastereoselectivities (up ...
Zhou Li   +4 more
core  

Predicting Ruthenium Catalysed Hydrogenation of Esters using Machine Learning

open access: yes, 2022
Catalytic hydrogenation of esters is a sustainable approach for the production of fine chemicals, and pharmaceutical drugs. However, the efficiency and cost of catalysts are often the bottlenecks in the commercialization of such technologies.
Challenger , Mishra   +5 more
core   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf   +4 more
wiley   +1 more source

Schwarz-Weiß im Dunkeln. Zur Aushandlung von Gender, Hautfarbe und Ethnizität in Kölner Tanzclubs [PDF]

open access: yes, 2018
Bei der vorliegenden Arbeit von Sonja Esters, die von Frau Prof. Dorothea Schulz betreut wurde, handelt es sich um eine Ethnographie Kölner Nachtclubs und Lokale, in denen Schwarze Männer und Weiße Frauen Kontakt miteinander aufnehmen.
Esters, Sonja
core  

Iridium-catalyzed asymmetric transfer hydrogenation of quinolines with Hantzsch esters

open access: yes, 2007
The iridium-catalyzed enantioselective transfer hydrogenation of quinolines with Hantzsch esters was developed with up to 88%, ee using [Ir(COD)Cl](2)/(S)-SegPhos/I-2 as a catalyst.
Zeng, Wei   +3 more
core   +1 more source

Water‐Compatible SuFEx‐Active Diazonium Linchpin Platform for Rapid Modular Diversification and On‐DNA Functionalization

open access: yesAdvanced Functional Materials, EarlyView.
Sulfur fluoride exchange (SuFEx) is a powerful click platform, yet water‐compatible multifunctional linchpins remain elusive. Here, we report decagram‐scalable diazonium linchpins that enable rapid Pd‐catalyzed diversification and direct, catalyst‐free on‐DNA ligation in aqueous media.
Seok Ju Hong   +5 more
wiley   +1 more source

Advancing Tandem Organic Solar Cells With Ternary Acceptor Control for High‐Power Modules and Solar‐to‐Ammonia Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Tandem organic solar cells with optimized ternary acceptor engineering achieved a power conversion efficiency of 15.53% and enabled a high‐voltage mini‐module (Voc 6.11 V). Integration into a bias‐free PV‐EC system further demonstrated efficient solar‐to‐ammonia (STA) conversion (97% Faradaic Efficiency, 4± 2% STA efficiency), highlighting scalable ...
Seyeong Song   +11 more
wiley   +1 more source

Determination of chlorinated fatty acids using SPE, XSD and GC/MS [PDF]

open access: yes, 2004
Chlorinated fatty acids (ClFAs) account for a considerable portion of the extractable, organically bound chlorine (EOCl) in aquatic animals. Because of analytical difficulties little is as of yet known about their behaviour in organisms.
Åkesson-Nilsson, Gunilla
core  

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