Results 61 to 70 of about 21,717,715 (348)

Efficient and Thorough Oxidation of Bisphenol A via Non-Radical Pathways Activated by SO_x²⁻-Modified Mn₂O₃

Crystals
It is generally found that enhancement in catalytic activity comes at the expense of selectivity or stability. In this study, an SOx2−-modified Mn2O3 (SO-Mn2O3) solid catalyst was prepared using a simple oxalate precipitation method.
Fei Pei, Jiajie Dong, Xin’e Yan, Youwen Xu, Songyuan Yao   +4 more
doaj   +1 more source

High Selectivity Slot-Coupled Bandpass Filter Using Discriminating Coupling and Source-Load Coupling

Applied Sciences, 2020
A multilayer bandpass filter with high selectivity is proposed in this letter. Discriminating coupling formed by slot-coupled quarter-wavelength and half-wavelength resonators introduces a zero at 3f0 (f0 is the center frequency) and the second harmonic ...
Jie Cui, Haojie Chang, Renli Zhang
doaj   +1 more source

The effect of host structure on the selectivity and mechanism of supramolecular catalysis of Prins cyclizations. [PDF]

, 2015
The effect of host structure on the selectivity and mechanism of intramolecular Prins reactions is evaluated using K12Ga4L6 tetrahedral catalysts. The host structure was varied by modifying the structure of the chelating moieties and the size of the ...
Bergman, Robert G, Burford, Kristen N, Hart-Cooper, William M, Ozores, Haxel Lionel, Raymond, Kenneth N, Toste, F Dean, Triano, Rebecca M, Yaghoubi, Parastou, Zhao, Chen   +8 more
core   +2 more sources

Model selection procedure for high‐dimensional data [PDF]

Statistical Analysis and Data Mining: The ASA Data Science Journal, 2010
AbstractFor high‐dimensional regression, the number of predictors may greatly exceed the sample size but only a small fraction of them are related to the response. Therefore, variable selection is inevitable, where consistent model selection is the primary concern.
Zhang, Yongli, Shen, Xiaotong
openaire   +3 more sources

Guidelines to Achieving High Selectivity for the Hydrogenation of α,β-Unsaturated Aldehydes with Bimetallic and Dilute Alloy Catalysts: A Review.

Chemical Reviews, 2020
Selective hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols is a challenging class of reactions, yielding valuable intermediates for the production of pharmaceuticals, perfumes, and flavorings.
M. Luneau, Jin-Soo Lim, Dipna A. Patel, E. Sykes, C. Friend, P. Sautet   +5 more
semanticscholar   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Molecularly Engineered Aza-Crown Ether Functionalized Sodium Alginate Aerogels for Highly Selective and Sustainable Cu²⁺ Removal

Gels
Developing sustainable and molecularly selective adsorbents for heavy-metal removal remains a critical challenge in water purification. Herein, we report a green molecular-engineering approach for fabricating aza-crown ether functionalized sodium ...
Teng Long, Ayoub El Idrissi, Lin Fu, Yufan Liu, Banlian Ruan, Minghong Ma, Zhongxun Li, Lingbin Lu   +7 more
doaj   +1 more source

Fiber-Enhanced Raman Spectroscopy for Trace-Gas Sensing in the High-Concentration Gas Background With an Anti-Resonant Hollow Core Fiber

Frontiers in Physics, 2022
In this article, with an anti-resonant hollow core fiber (ARHCF), fiber-enhanced Raman spectroscopy (FERS) for trace-gas sensing in a high-concentration gas background is demonstrated for the first time.
Guochao Qian, Guochao Qian, Fu Wan, Fu Wan, Feng Zhou, Jianxin Wang, Weiping Kong, Weigen Chen, Weigen Chen   +8 more
doaj   +1 more source

Ultrasound- and microwave-assisted preparation of lead-free palladium catalysts: effects on the kinetics of diphenylacetylene semi-hydrogenation [PDF]

, 2015
The effect of environmentally benign enabling technologies such as ultrasound and microwaves on the preparation of the lead-free Pd catalyst has been studied.
Bonrath, Werner, Borretto, Emily, Cherkasov, Nikolay, Cravotto, Giancarlo, Ibhadon, Alex O., Medlock, Jonathan, Wu, Zhilin   +6 more
core   +1 more source

Single-pass transformation of syngas into ethanol with high selectivity by triple tandem catalysis

Nature Communications, 2020
Synthesis of ethanol from non-petroleum carbon resources via syngas (a mixture of H2 and CO) is an important but challenging research target. The current conversion of syngas to ethanol suffers from low selectivity or multiple processes with high energy ...
Jincan Kang, Shun He, Wei Zhou, Zheng Shen, Yangyang Li, Mingshu Chen, Qinghong Zhang, Ye Wang   +7 more
semanticscholar   +1 more source