Results 1 to 10 of about 399,510 (362)

Understanding alkali metal promotion in hydrogenation catalysis through Strong Metal–Base Interaction [PDF]

Nature Communications
Alkali metals have been widely used as promoters in heterogeneous metal catalysts to improve activity, product selectivity, and stability. Despite their prevalence, the precise role remains not fully uncovered due to the complex interplay between ...
Munam Jung, Maxim Park Dickieson, Pinzhang Chen, Clemen Jia Gen Goh, Peijie Han, Bingqing Yao, Xing-Chi Li, Haruya Hattori, Qian He, Ya-Wen Zhang, Kyungho Lee, Ning Yan   +11 more
doaj   +2 more sources

Metal‐Based Multihelicenic Architectures [PDF]

Angewandte Chemie, 2020
AbstractThe preparation of multihelicenic systems by conventional organic synthesis is a challenging task and under continuous development. In parallel, using complexing units grafted to or incorporated within the helicene core and taking advantage of coordination/organometallic chemistry constitutes a powerful strategy to obtain multihelicenic ...
Etienne S. Gauthier, Rafael Rodríguez, Jeanne Crassous   +2 more
openaire   +2 more sources

Refinement of the method for selecting the width of the conductor of printed circuit boards on a metal base, working in the absence of convection

Физика волновых процессов и радиотехнические системы, 2021
The article proposes a refined method for calculating the width of the conductors of printed circuit boards on a metal base for the onboard devices of spacecraft, depending on the current flowing. The constructed refined mathematical model of the process
Aleksey V. Kostin
doaj   +1 more source

Analysis of heating of printed circuit board conductors on a metal base for spacecraft devices at pulsed current

Физика волновых процессов и радиотехнические системы, 2022
The article presents the results of the analysis of heating of printed circuit conductors of printed circuit boards mounted on a metal base, on-board device of spacecraft when pulsed current flows through them.
Alexey V. Kostin
doaj   +1 more source

THE INFLUENCE OF THE CHEMICAL COMPOSITION OF WEAR-RESISTANT CAST IRON ON THE INTERPHASE DISTRIBUTION OF MN AFTER ANNEALING AT 690°C

Nauka ta progres transportu, 2020
Purpose. The article is aimed to obtain the regression dependences of manganese distribution between carbides and the metal base on the content of pig iron C, Cr, Mn and Ni after annealing at 690°C. Methodology.
V. V. Netrebko
doaj   +1 more source

Enlarged Interlayer Spacing of Marigold-Shaped 1T-MoS₂ with Sulfur Vacancies via Oxygen-Assisted Phosphorus Embedding for Rechargeable Zinc-Ion Batteries

Nanomaterials, 2023
Structural unsteadiness and sluggish diffusion of divalent zinc cations in cathodes during cycling severely limit further applications of MoS2 for rechargeable aqueous zinc-ion batteries (ZIBs).
Qinhu Xu, Xinyu Li, Luchen Wu, Zhen Zhang, Yong Chen, Ling Liu, Yong Cheng   +6 more
doaj   +1 more source

Cu-loaded polyurethane to reduce ureteral stent microbes adherence and regulation of the inflammation response to RAW264.7

Frontiers in Materials, 2023
Introduction: Ureteral stents blocked with encrustation are a common clinical complication and affect bacteria colonization and inflammatory response. In this study, different concentrations of copper (0.25, 0.5, 1, 1.5, and 2 g/L) were immobilized on ...
Hongwei Li, Hongwei Li, Jing Zhao, Zhenyu Wang, Jiyuan Hu, Jinlong Zhao, Bukola O. Awonusi, Jianzhong Li, Lianhui Fan, Lianhui Fan   +9 more
doaj   +1 more source

Hydrothermal Synthesis and Electrochemical Performance of Al-doped VO2(B) as Cathode Materials for Lithium-Ion Battery

International Journal of Electrochemical Science, 2017
Al-doped VO2(B) nanobelts have been successfully synthesized via the hydrothermal method using V2O5, C6H12O6·H2O and Al(NO3)3·9H2O as reactants. XRD, FESEM, EDS and XPS were introduced to characterize the phase, morphology, compositions and chemical ...
Zhengguang Zou, Zhongliang Hou, Jilin Wang, Yao Gao, Zhendong Wan, Shichang Han   +5 more
doaj   +1 more source

ANALYSIS OF THE THERMAL EFFECT OF TWO INTERNAL PARALLEL PRINTED CIRCUIT BOARD CONDUCTORS MOUNTED ON A METAL BASE AND LOCATED IN ONE LAYER

Надежность и качество сложных систем, 2023
Background. An analysis is made of the thermal effect of two internal parallel printed circuit board conductors located in one layer, which are installed on a metal base (on top of each other) and operate in space vacuum conditions.
Aleksey V. Kostin, Dmitriy S. Bogdanov, Igor S. Bobrov   +2 more
doaj   +1 more source

Synthesis of Metallic Nanocrystals: From Noble Metals to Base Metals [PDF]

Materials, 2019
Metallic nanocrystals exhibit superior properties to their bulk counterparts because of the reduced sizes, diverse morphologies, and controllable exposed crystal facets. Therefore, the fabrication of metal nanocrystals and the adjustment of their properties for different applications have attracted wide attention.
Liuyang Bai, Yuge Ouyang, Jun Song, Zhi Xu, Wenfu Liu, Jingyu Hu, Yinling Wang, Fangli Yuan   +7 more
openaire   +2 more sources