Results 61 to 70 of about 705,088 (330)

Kinetic Resolution in Asymmetric Epoxidation using Iminium Salt Catalysis [PDF]

, 2013
The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis ...
Allin, Steven M., Appleby, Louise F., Buckley, Benjamin R., Bulman Page, Philip C., Chan, Yohan, Day, David P., Mckenzie, Michael J., Slawin, Alexandra M. Z.   +7 more
core   +1 more source

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Evolutionary interplay between viruses and R‐loops

FEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi, Zita Képes, Zoltán Szabó, Eszter Csoma, Lóránt Székvölgyi   +4 more
wiley   +1 more source

Visible-Light-Active N-Doped TiO₂ Photocatalysts: Synthesis from TiOSO₄, Characterization, and Enhancement of Stability Via Surface Modification

Nanomaterials, 2022
This paper describes the chemical engineering aspects for the preparation of highly active and stable nanocomposite photocatalysts based on N-doped TiO2.
Nikita Kovalevskiy, Dmitry Svintsitskiy, Svetlana Cherepanova, Stanislav Yakushkin, Oleg Martyanov, Svetlana Selishcheva, Evgeny Gribov, Denis Kozlov, Dmitry Selishchev   +8 more
doaj   +1 more source

Influence of the Pressure on the Product Distribution in the Oxidative Dehydrogenation of Propane over a Ga2O3/MoO3 Catalyst [PDF]

, 2007
The yields and selectivities in both the catalyzed and non-catalyzed oxidative dehydrogenation of propane were found to increase with increasing pressure.
Kotanjac, Zeljko S., Niederer, John P.M., Versteeg, Geert F.   +2 more
core   +5 more sources

Disruption of SETD3‐mediated histidine‐73 methylation by the BWCFF‐associated β‐actin G74S mutation

FEBS Letters, EarlyView.
The β‐actin G74S mutation causes altered interaction of actin with SETD3, reducing histidine‐73 methylation efficiency and forming two distinct actin variants. The variable ratio of these variants across cell types and developmental stages contributes to tissue‐specific phenotypical changes. This imbalance may impair actin dynamics and mechanosensitive
Anja Marquardt, Marcus S. Münchhoff, Jacqueline Krohn, Philip M. Palarz, Manuel H. Taft, Johannes N. Greve, Nataliya Di Donato, Falk F. R. Buettner, Dietmar J. Manstein   +8 more
wiley   +1 more source

Highly selective hydrogenation of arenes using nanostructured ruthenium catalysts modified with a carbon–nitrogen matrix

Nature Communications, 2016
The selective reduction of arenes is important in organic synthesis and also valorization of biomass. Here, the authors report the use of ruthenium-based nanoparticles, which display high activity in arene reduction and preferentially hydrogenate ...
Xinjiang Cui, Annette-Enrica Surkus, Kathrin Junge, Christoph Topf, Jörg Radnik, Carsten Kreyenschulte, Matthias Beller   +6 more
doaj   +1 more source

Deactivation and Regeneration of Mo/ZSM-5 Catalysts for Methane Dehydroaromatization

Eurasian Chemico-Technological Journal, 2010
The methane dehydroaromatization (DHA) was studied over a series of impregnated Mo/ZSM-5 catalysts with different molybdenum contents (1-10 wt.%). It was shown that total methane conversion was decreased by 30% during 12 h of DHA reaction.
E. V. Matus, O. B. Sukhova, I. Z. Ismagilov, V. I. Zaikovskii, M. A. Kerzhentsev, Z. R. Ismagilov, K. D. Dosumov, A. G. Mustafin   +7 more
doaj   +1 more source

Simulation of Steam Reforming Tube with Shaped Particles

Eurasian Chemico-Technological Journal, 2005
Shaped catalysts are widely used in steam reforming. A comprehensive mathematical model able to predict and compare performance of different shaped catalysts is developed.
A. P. Kagyrmanova, N. V. Vernikovskaya, I. A. Zolotarsky, E. I. Smirnov, V. A. Kuzmin   +4 more
doaj   +1 more source

Comparative Study of Pd-Mayenite Catalysts Prepared via Aerogel Approaches

Gels, 2022
Pd-containing catalysts based on highly dispersed aerogel-derived mayenite were prepared via two approaches. The Pd@C12A7 sample was obtained through the addition of Pd nitrate solution to a fresh Ca(OH)2-Al(OH)3 gel.
Ekaterina V. Ilyina, Alexander F. Bedilo, Grigory B. Veselov, Yuri Y. Gerus, Ekaterina I. Shuvarakova, Vladimir O. Stoyanovskii, Aleksey A. Vedyagin   +6 more
doaj   +1 more source