Results 61 to 70 of about 49,233 (340)

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Clinical Outcomes of SEEG‐Guided Radiofrequency Thermocoagulation in Children With Focal Drug‐Resistant Epilepsy: A Multicenter Real‐World Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Stereoelectroencephalography‐guided radiofrequency thermocoagulation (SEEG‐RFTC) has emerged as a safe and effective minimally invasive treatment for children with drug‐resistant focal epilepsy. Although evidence from real‐world studies remains limited, numerous pediatric cases have demonstrated promising outcomes. This retrospective
Weitao Chen, Stéphane Jean, Weihong Liu, Yihai Dai, Xinrong Fang, Xiaoqiang Wei, Shan Chen, Shiwei Song   +7 more
wiley   +1 more source

MAIN BIRD EXCREMENT CONTAMINATION TYPE CAUSING INSULATOR FLASHOVERS IN 110 kV OVERHEAD POWER LINES IN ESTONIA; pp. 211–224 [PDF]

Oil Shale, 2013
The study aims to elucidate which type of bird excrement contamina­tion causes insulator flashovers in 110 kV overhead power lines in Estonia. Laboratory wetting and bird streamer tests performed on naturally contaminated glass and composite insulators ...
PAUL TAKLAJA, Rein Oidram, JAAN NIITSOO, Ivo Palu   +3 more
doaj   +1 more source

Tunnel spin polarization of Ni80Fe20/SiO2 probed with a magnetic tunnel transistor [PDF]

, 2006
The tunnel spin polarization of Ni80Fe20/SiO2 interfaces has been investigated using a magnetic tunnel transistor (MTT). The MTT with a Ni80Fe20/SiO2 emitter shows a magnetocurrent of 74% at 100 K, corresponding to a tunnel spin polarization of the ...
Banerjee, T., Jansen, R., Lodder, J.C., Min, B.C., Park, B.G.   +4 more
core   +6 more sources

Asset management frameworks for outdoor composite insulators [PDF]

IEEE Transactions on Dielectrics and Electrical Insulation, 2012
Power supply utilities are continuously working to maintain reliable and efficient electrical networks that meet the growing demand for electricity. This is a complex task in which appropriate maintenance, refurbishment and replacement policies for all the assets are critical.
Tzimas, Antonios, Silva, Elizabeth, Rowland, Simon M., Boumecid, Boud, Queen, Martin, Michel, Matthieu   +5 more
openaire   +3 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Mechanical Properties of High-Temperature Vulcanized Silicone Rubber Under Acid-Fog With AC Energized

IEEE Access, 2022
Due to excellent anti-pollution performance, composite insulators have been widely used in transmission lines. However, composite insulators present various failures after long-term outdoor operation under environmental, mechanical, and electrical stress.
Zhijin Zhang, Guohui Pang, Xiaodan MA, Tian Liang, Xingliang Jiang   +4 more
doaj   +1 more source

A Concept of a Digital and Traceable Manufacturing Documentation Based on Formalized Process Description Applied on Composite Aircraft Moveable

Advanced Engineering Materials, EarlyView.
The documentation of component manufacture has become an essential part of today's production processes, especially for the analysis and optimization of production or component design with regard to structural performance, economic efficiency, and sustainability.
Björn Denker, Dominik Delisle, Christian Krombholz, Martin Rädel, Frank Dressel   +4 more
wiley   +1 more source

Characteristics of powdered layer on silicone rubber surface

Journal of Materials Research and Technology, 2021
In recent years, varying degrees of surface pulverization had been found on composite insulators running for years in severe outdoor environment such as dry, high altitude, salt fog and intensive ultraviolet radiation.
Tian Liang, Zhijin Zhang, Xiaohong Ma, Yingzhu Xiang, Huan Huang, Xingliang Jiang   +5 more
doaj   +1 more source

The edge state network model and the global phase diagram

, 2001
The effects of randomness are investigated in the fractional quantum Hall systems. Based on the Chern-Simons Ginzburg-Landou theory and considering relevant quasi-particle tunneling, the edge state network model for the hierarchical state is introduced ...
Blok B., Blok B., Caldeira A. O., Chalker J. T., Furusaki A., Haldane F. D. M., Halperin B. I., Hatsugai Y., Imura K., Imura K.-I., Jain J. K., Jiang H. W., Kane C. L., Khmel'nitzkii D. E., Kivelson S., Kravchenko S. V., Laughlin R. B., Lee D. H., Liu D. Z., Morita Y., Nagaosa N., Prange R. E., Pryadko L. P., Schmid A., Shahar D., Shahar D., Shahar D., Shimshoni E., Song S.-H., Wang T., Wen X. G., Wen X. G., Wen X. G., Wen X. G., Xie X. C., Yang K., Zhang S. C., Zhang S. C.   +37 more
core   +1 more source