Results 111 to 120 of about 167,615 (302)

Ketone-catalyzed asymmetric epoxidation reactions

open access: yes, 2004
This Account summarizes our efforts in developing organic ketone catalysts for enantioselective and diastereoselective epoxidation of olefins. We have developed an efficient and general protocol for epoxidation of olefins using dioxiranes generated in ...
Yang, D, Dan Yang
core   +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

open access: yesAdvanced 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   +7 more
wiley   +1 more source

Synthetic studies on Terpenoid lactones [PDF]

open access: yes, 1985
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A novel stereoselective route has been developed to a vernolepin intermediate in nine steps from 2-phenylthiocyclopentenone.
Toczek, Judy
core   +2 more sources

Conformational Mobility of 4,4′-Bisdimethyl-Aminobenzophenone in the Excited State.

open access: yes, 2005
Quantum-chemical calculations on various conformational states of the molecule of Michler’s ketone have been carried out by semi-empirical and non-empirical methods (HyperChem 7.0 suite of programs and Gaussian 98).
Ромашко, Таміла Петрівна
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Selective Oxidative Cleavage of Benzyl C–N Bond under Metal-Free Electrochemical Conditions

open access: yesMolecules
With the growing significance of green chemistry in organic synthesis, electrochemical oxidation has seen rapid development. Compounds undergo oxidation–reduction reactions through electron transfer at the electrode surface. This article proposes the use
Jiawei Huang   +5 more
doaj   +1 more source

Co‐Delivery of Sustained Release Chondroitinase ABC‐37 With Human iPSC‐Derived Neural Progenitors Promotes Transplant Survival and Functional Recovery in a Rodent Model of Stroke

open access: yesAdvanced Science, EarlyView.
A regenerative strategy for stroke combines human stem cell–derived neural progenitor cells with sustained release of a matrix‐modifying, thermostable chondroitinase ABC‐37 enzyme. In a rat model of stroke, co‐delivery enhanced transplanted cell survival and neuronal differentiation, degraded inhibitory extracellular matrix components, and improved ...
Nitzan Letko Khait   +7 more
wiley   +1 more source

A randomized feasibility trial of the modified Atkins diet in older adults with mild cognitive impairment due to Alzheimer’s disease

open access: yesFrontiers in Endocrinology
BackgroundAlzheimer’s disease (AD) is increasing in prevalence, but effective treatments for its cognitive impairment remain severely limited. This study investigates the impact of ketone body production through dietary manipulation on memory in persons ...
Alison Buchholz   +8 more
doaj   +1 more source

A new hepatotoxic triterpenoid ketone from Curculigo orchioides

open access: yes, 2013
To investigate hepatotoxic constituents, a new cycloartane-type triterpenoid ketone together with four known components was isolated from rhizomes of Curculigo orchioides.
Jiao, W (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China   +5 more
core  

Ketone body metabolism in ascorbic acid deficiency: in vivo utilization of ketone bodies in guinea pigs

open access: yes, 1959
Blood and urinary levels of ketone bodies were studied in normal, ascorbic acid-deficient, and pair-fed control, guinea pigs. The resting levels of ketone bodies in the blood and urine throughout the course of ascorbic acid-deficiency do not differ ...
Albert F. Debons   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy