Results 61 to 70 of about 66,773 (266)

Opportunities Offered by Chiral η6-Arene/N-Arylsulfonyl-diamine-RuII Catalysts in the Asymmetric Transfer Hydrogenation of Ketones and Imines

Molecules, 2011
Methods for the asymmetric transfer hydrogenation (ATH) of ketones and imines are still being intensively studied and developed. Of foremost interest is the use of Noyori’s [RuCl(η6-arene)(N-TsDPEN)] complexes in the presence of a hydrogen donor (i-PrOH,
Libor Červený, Marek Kuzma, Petr Kačer, Jiří Václavík   +3 more
doaj   +1 more source

The Allylic Alkylation of Ketone Enolates

ChemistryOpen, 2020
The palladium‐catalyzed allylic alkylation of non‐stabilized ketone enolates was thought for a long time to be not as efficient as the analogous reactions of stabilized enolates, e. g. of malonates and β‐ketoesters.
Dr. Lukas Junk, Prof. Dr. Uli Kazmaier
doaj   +1 more source

Liquid Crystal Elastomer‐Based Haptic Pixel Arrays at Your Fingertips for Advanced Human–Machine Interfaces

Advanced Materials, EarlyView.
We mechanically program liquid crystal elastomer coatings as a stimuli‐responsive and digitally addressable platform for refreshable tactile displays; we validate the perceptual performance of our dynamic device matches conventional static tactile media.
Tom Bruining, Enjun Lin, Yu Zou, Meike Heldoorn, Pengrong Lyu, Samuël A. M. Weima, Astrid M. L. Kappers, Myrthe A. Plaisier, Satoshi Aya, Danqing Liu   +9 more
wiley   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source

Apabetalone Drives a Metabolic Shift Towards Ketogenesis and Reduces Liver Steatosis in Diet-Induced Obesity Mice

Biomedicines
Background/Objectives: Obesity can cause metabolic disorders and hepatic steatosis. Continuous hepatic influx of dietary lipids leads to adaptive metabolic changes, including increased fatty acid oxidation (FAO) and ketogenesis.
Laura M. Tsujikawa, Agostina Carestia, Sylwia Wasiak, Christopher D. Sarsons, Ravi Jahagirdar, Salman Azhar, Dean Gilham, Derek Li, Li Fu, Jan O. Johansson, Norman C. W. Wong, Michael Sweeney, Ewelina Kulikowski   +12 more
doaj   +1 more source

Using a Zero‐Strain Reference Electrode to Distinguish Anode and Cathode Volume Changes in a Solid‐State Battery

Advanced Materials Interfaces, EarlyView.
Volume changes of a solid‐state battery cell are separated into the individual contributions of anode and cathode. Simultaneously determining the “reaction volumes” of both electrodes requires a reference electrode with a pressure‐independent potential.
Mervyn Soans, Benedikt Huber, Marcel Drüschler, Dominic Bresser, Alberto Varzi, Christoffer Karlsson   +5 more
wiley   +1 more source

The glucose ketone index: a proposed quantitative biomarker to support cancer and chronic disease prevention and management

Frontiers in Science
The chronic disease burden is rapidly becoming the most significant health challenge of the 21st century. Chronic noncommunicable diseases (NCDs) are replacing infectious diseases as the most significant factor in poor global health outcomes.
Derek C. Lee, Tomas Duraj, Isabella D. Cooper, Joseph C. Maroon, Kris Smith, Wafaa Abdel-Hadi, Egiroh Omene, Athanasios E. Evangeliou, Thomas N. Seyfried   +8 more
doaj   +1 more source

Nutritional Ketosis Increases NAD+/NADH Ratio in Healthy Human Brain: An in Vivo Study by 31P-MRS

Frontiers in Nutrition, 2018
Ketones represent an important alternative fuel for the brain under glucose hypo-metabolic conditions induced by neurological diseases or aging, however their metabolic consequences in healthy brain remain unclear.
Lijing Xin, Özlem Ipek, Maurice Beaumont, Maya Shevlyakova, Nicolas Christinat, Mojgan Masoodi, Norman Greenberg, Rolf Gruetter, Bernard Cuenoud   +8 more
doaj   +1 more source

In Situ X‐Ray Tomography and Acoustic Emission Monitoring of Damage Evolution in C/C‐SiC Composites Fabricated by Liquid Silicon Infiltration

Advanced Science, EarlyView.
This study investigates how the internal structure of fiber‐reinforced ceramic composites affects their resistance to damage. By combining 3D X‐ray imaging with acoustic emission monitoring during mechanical testing, it reveals how silicon distribution influences crack formation.
Yang Chen, Renato S. M. Almeida, Stefan Flauder, Guillaume Couégnat, Kamen Tushtev, Jürgen Horvath, Peter Wriggers, Kurosch Rezwan   +7 more
wiley   +1 more source

Ketogenic diet and Parkinson’s disease

Frontiers in Molecular Neuroscience
Parkinson’s disease (PD), a common degenerative disorder in middle-aged and elderly individuals, has an unclear etiology and pathogenesis, and there is currently no cure.
Yuzhao Ye, Shuzhu Li, Tao Chen
doaj   +1 more source