Main observation and conclusion An anodic oxidation enabled synthesis of hypervalent iodinel(Ⅲ)reagents from aryl iodides is *** mild electrochem-ical conditions,a range of arylidine(Ⅲ)reagents including iodosylaren...
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Main observation and conclusion An anodic oxidation enabled synthesis of hypervalent iodinel(Ⅲ)reagents from aryl iodides is *** mild electrochem-ical conditions,a range of arylidine(Ⅲ)reagents including iodosylarenes,(difunctionaliodo)arenes,benziodoxoles and diaryliodoni-um salts can be efficiently synthesized and derivatized in good to excellent yields with high *** only electrons serve as the oxidation reagents,this method offers a more straightforward and sustainable manner avoiding the use of expensive or hazardous chemical oxidants.
This paper combine sentiment analysis based on system similarity model and Bayesian classification model to design a prediction system for the stock plate price trend analysis according to the Internet stock news and ...
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The article analyzes the roadheader section forming principle, established roadheader's section forming mathematical model which based on the angular displacement and leaner displacement sensor, obtains the relati...
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In this paper, the key influences of lunar lander landing model are illuminated systematic. Then the touchdown dynamic model of lunar module is built. And the simulation model for lunar landing described on ADAMS is d...
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This book introduces readers to titanium matrix composites (TMCs) with novel network microstructures. The bottleneck problem of extreme brittleness and low strengthening effect surrounding TMCs fabricated by means of ...
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ISBN:
(数字)9789811044496
ISBN:
(纸本)9789811044472;9789811351402
This book introduces readers to titanium matrix composites (TMCs) with novel network microstructures. The bottleneck problem of extreme brittleness and low strengthening effect surrounding TMCs fabricated by means of powder metallurgy has recently been solved by designing network microstructures, which yield both high strength and superior ductility. As such, network structured TMCs will increasingly offer materials characterized by low weight, high strength, high temperature resistance and superior deformability. The book systematically addresses the design, fabrication, microstructure, properties, modification, and toughening mechanisms of these composites, which will help us find innovative solutions to a range of current and future engineering problems.
Report the preparation of MoS2 nanosheets suspensions based on liquid exfoliation method. The suspensions are characterized by absorbance and photoluminescence (PL) spectroscopy. The results show the PL signal from su...
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We study the efficient approximation algorithm for max-covering circle problem. Given a set of weighted points in the plane and a circle with specified size, max-covering circle problem is to find the proper place whe...
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This paper aims to study low dimensional cohomology of Hom-Lie algebras and the qdeformed W（2, 2） algebra. We show that the q-deformed W（2, 2） algebra is a Hom-Lie algebra. Also,we establish a one-to-one correspon...
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This paper aims to study low dimensional cohomology of Hom-Lie algebras and the qdeformed W（2, 2） algebra. We show that the q-deformed W（2, 2） algebra is a Hom-Lie algebra. Also,we establish a one-to-one correspondence between the equivalence classes of one-dimensional central extensions of a Hom-Lie algebra and its second cohomology group, leading us to determine the second cohomology group of the q-deformed W（2, 2） algebra. In addition, we generalize some results of derivations of finitely generated Lie algebras with values in graded modules to Hom-Lie *** application, we compute all αk-derivations and in particular the first cohomology group of the q-deformed W（2, 2） algebra.
Images captured in low-light or underwater environments are often accompanied by significant degradation, which can negatively impact the quality and performance of downstream tasks. While convolutional neural network...
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Technique of target selection and profiles of transfer trajectory for Chinese asteroid exploring mission are studied systemically.A complete set of approaches to selecting mission targets and designing the transfer tr...
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Technique of target selection and profiles of transfer trajectory for Chinese asteroid exploring mission are studied systemically.A complete set of approaches to selecting mission targets and designing the transfer trajectory is ***,when selecting a target for mission,some factors regarded as the scientific motivations are ***,when analyzing the accessibility of targets,instead of the classical strategy,the multiple gravity-assist strategy is *** suitable and possible targets,taking into account scientific value and technically feasible,are obtained via selection and *** designing the transfer trajectory for exploring asteroid mission,an approach to selecting gravity-assist celestial body is ***,according to the mission constraints,the trajectory profile with 2-years △V-EGA for exploring asteroid is *** analyzing the trajectory profile,unexpected result that the trajectory would pass by two main-belts asteroids is ***,the original proposal is extended to the multiple flybys *** adds the scientific return for asteroid mission.
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