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Partners in Epoxide Copolymerization Catalysis:Approach to High Activity and Selectivity

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Chinese Journal of Polymer Science 2022年第11期40卷 1331-1348页

作者： Xiao-bing lu Bai-Hao Ren State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China

The ring-opening alternating copolymerization processes of epoxides with small-molecule monomers,such as carbon dioxide(CO_(2)),carbonyl sulfide(COS)and cyclic anhydrides,are powerful strategies for preparing polymeric materials with degradable carbonate/ester/thiocarbonate main-chain backbone *** catalysts selected for copolymerization processes play crucial roles in determining their reaction rates and productivities,as well as the selectivity,regio-and stereochemistry,compositions,and the molecular weights of their resultant *** processes often generate undesirable byproducts such as polyether or ether linkages dispersed randomly within the copolymer's chain,and/or more thermodynamically stable cyclic *** this account,we outline our efforts of over a dozen years on developing highly active well-defined metal catalysts based on inter-and intra-molecular synergistic strategies to selectively produce completely alternating copolymers from epoxides and various small-molecule *** attention was paid to the enantioselective resolution copolymerization processes of racemic epoxides via regioselective ring-openings,and the asymmetric copolymerization processes of meso-epoxides with CO_(2),COS,or cyclic anhydrides via dissymmetrical ring-openings using multichiral catalytic systems,and affording isotactic copolymers with main-chain *** addition,this account provides a thorough mechanistic understanding of the high reactivities,excellent selectivity,and unprecedented stereochemical controls of these copolymerization systems,mediated by interand intramolecular synergistic catalysis.

关键词： Epoxide Ring-opening copolymerization Synergistic catalysis CO_(2) Stereochemistry control

Smart technology renders high-end manufacturing possible

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Advances in Manufacturing 2013年第2期1卷 107-111页

作者： bing-Heng lu School of Mechanical Engineering Xi’an Jiaotong University

1 Review of China＇s manufacturing industryBefore Liberation, even such small items as nails and matches in China were all manufactured by foreigners, as a result, they were called ＂foreign nails＂ and ＂foreign matches＂. China＇s mechanical manufacturing capabilities picked up after the foundation of new China with the aid of the former Soviet Union. From 1960s onwards, the industry was mainly dependent on self-reliance. In 1978 China＇s higher education was resumed and universities began to enroll students. As a result of economic reforms and opening up, China＇s manufacturing industry began to learn from foreign examples,

关键词： high Smart technology renders high-end manufacturing possible Innovation

Fe_(0.8)CoSe_(2) nanosphere coated by N-doped carbon for ultra- high rate potassium selenium battery

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Rare Metals 2021年第9期40卷 2455-2463页

作者： Xin-Xin Jia Xin-Zhi Yu bing-An lu Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and ElectronicsHunan UniversityChangsha 410082China

Potassium-selenium(K-Se) batteries are a promising electrical energy storage candidate because of the cost-effectiveness and material sustainability, yet they suffer from shuttle effect, volume expansion and low powder density. The development of Se-based cathode is an effective way to overcome the above issues. Here we designed a hollow nano-spherical Co-Fe bi-metallic selenide coated with N-doped carbon(denoted as CFS@N-C)as cathode for K-Se batteries. Bimetallic selenide is benefit to improve the conductivity of composite materials;N-doped carbon layer encapsulation effectively inhibits the dissolution of poly-selenides and relieves the volume expansion. The as-prepared K-Se battery exhibits excellent rate performance(300 mAh·g^(-1) at 1000 mA·g^(-1)) and slowcharge/ultrafast-dischargecapability(dischargeat5000 mA·g^(-1) and charge at 100 mA·g^(-1) with ultrahigh capacity of 227 mAh·g^(-1)) with Coulombic efficiency nearly 100%. In addition, the ex-situ high-resolution transmission electron microscopy(HRTEM) images reveal that the charge–discharge mechanism of CFS@N-C is K^(+) replaces the bimetal and forms K_(2)Se. The unique design in this work may provide certain directions on researching for high power density K-storage materials.

关键词： Potassium selenium battery High powder density Excellent rate performance Inhibit shuttle effects Tolerate volume changes

Impact of the Horizontal Heat Flux in the Mixed Layer on an Extreme Heat Event in North China:A Case Study

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Advances in Atmospheric Sciences 2019年第2期36卷 133-142页

作者： Ying NA Riyu lu bing lu Min CHEN Shiguang MIAO State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences College of Earth and Planetary Sciences University of the Chinese Academy of Sciences Institute of Urban Meteorology China Meteorological Administration

Extreme heat over the North China Plain is typically induced by anomalous descending flows associated with anticyclonic circulation anomalies. However, an extreme heat event that happened in the North China Plain region on 12–13 July 2015,with maximum temperature higher than 40℃ at some stations, was characterized by only a weak simultaneous appearance of an anomalous anticyclone and descending flow, suggesting that some other factor(s) may have induced this heat event. In this study, we used the forecast data produced by the Beijing Rapid Updated Cycling operational forecast system, which predicted the heat event well, to investigate the formation mechanism of this extreme heat event. We calculated the cumulative heat in the mixed-layer air column of North China to represent the change in surface air temperature. The cumulative heat was composed of sensible heat flux from the ground surface and the horizontal heat flux convergence. The results indicated that the horizontal heat flux in the mixed layer played a crucial role in the temporal and spatial distribution of high *** horizontal heat flux was found to be induced by distinct distributions of air temperatures and horizontal winds at low levels during the two days, implying a complexity of the low-level atmosphere in causing the extreme heat.

关键词： extreme heat North China Plain horizontal heat flux sensible heat flux warm advection

The angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model

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Communications in Theoretical Physics 2022年第1期74卷 64-76页

作者： Kun Wang bing-Nan lu CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Graduate School of China Academy of Engineering Physics Beijing 100193China

Nuclear deformations are fundamentally important in nuclear *** recently developed a multidimensionally constrained relativistic Hartree-Bogoliubov(MDCRHB)model,in which all multipole deformations respecting the V_(4) symmetry can be considered *** this work we extend this model by incorporating the angular momentum projection and parity projection to restore the rotational and parity symmetries broken in the mean-field *** projected MDCRHB(p-MDCRHB)model enables us to connect certain nuclear spectra to exotic intrinsic shapes such as triangles or *** present the details of the method and an exemplary calculation for ^(12)*** develop a triangular moment constraint to generate the triangular configurations consisting of three α clusters arranged as an equilateral *** resulting ^(12)C spectra are consistent with that from a triangular rigid rotor for large separations between the α *** also calculate the B(E2)and B(E3)values for low-lying states and find good agreement with the experiments.

关键词： nuclear physics beyond mean field density functional nuclear clustering

Sulfur–nitrogen co-doped graphene supported cobalt–nickel sulfide rGO@SN-CoNi_(2)S_(4) as highly efficient bifunctional catalysts for hydrogen/oxygen evolution reactions

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Rare Metals 2022年第3期41卷 911-920页

作者： bing-lu Deng Li-Ping Guo Yuan lu Hai-Bo Rong Dong-Chu Cheng School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000China Guangdong Key Laboratory for Hydrogen Energy Technologies Foshan 528000China School of Environment and Energy South China University of TechnologyGuangzhou 510006China

Designing highly active and stable electrocata-lysts for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)is a challenge for energy con-version and storage *** this work,a S and N co-doped graphene supported cobalt–nickel sulfide composite catalyst(rGO@SN-CoNi_(2)S_(4))was synthesized simply via a one-step hydrothermal *** as-synthesized CoNi_(2)S_(4)particles grew in a mosaic manner inside GO lamellae and were encapsulated with *** a bifunctional catalyst,the r GO@SN-CoNi_(2)S_(4)exhibits excellent electrocatalytic performance under alkaline con-ditions,which only required the overpotential of 142.6 mV(***)and 310 m V(***)to deliver a current density of 10 mA·cm^(-2) for HER and OER,*** good hydrophilicity of the r GO@SN,the pure phase of bimetallic structure,and the chemical coupling/interaction between the CoNi_(2)S_(4)and the rGO@SN are attributable to be the possible reasons responsible for the higher HER and OER catalytic ***,the rGO@SN-CoNi_(2)S_(4)also shows a great potential for serving as an excellent cathode and anode electrolyzer during the water splitting process.

关键词： Hydrogen evolution reaction Oxygen evolution reaction S and N co-doped grapheme Cobalt–nickel sulfide Water splitting

Potential applications of artemisinins in ocular diseases

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International Journal of Ophthalmology(English edition) 2019年第11期12卷 1793-1800页

作者： bing-Wen lu Li-Ke Xie Department of Ophthalmology Eye Hospital China Academy of Chinese Medical Sciences

Artemisinin, also named qinghaosu, is a family of sesquiterpene trioxane lactone originally derived from the sweet wormwood plant(Artemisia annua), which is a traditional Chinese herb that has been universally used as anti-malarial agents for many years. Evidence has accumulated during the past few years which demonstrated the protective effects of artemisinin and its derivatives(artemisinins) in several other diseases beyond malaria, including cancers, autoimmune disorders, inflammatory diseases, viral and other parasiterelated infections. Recently, this long-considered antimalarial agent has been proved to possess anti-oxidant, anti-inflammatory, anti-apoptotic and anti-excitotoxic properties, which make it a potential treatment option for the ocular environment. In this review, we first described the overview of artemisinins, highlighting the activity of artemisinins to other diseases beyond malaria and the mechanisms of these actions. We then emphasized the main points of published results of using artemisinins in targeting ocular disorders, including uveitis, retinoblastoma, retinal neurodegenerative diseases and ocular neovascularization. To conclude, we believe that artemisinins could also be used as a promising therapeutic drug for ocular diseases, especially retinal vascular diseases in the near future.

关键词： artemisinins uveitis retinoblastoma retinal neurodegenerative diseases ocular neovascularization

Research on the development and countermeasures for circular economy

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Ecological Economy 2007年第3期3卷 295-302页

作者： lu bing Institute of Economics Shandong Academy of Social SciencesJinan 250002.P.R.China

Ecological economics and sustainable development economics are the basic theories to research on circulareconomy. Through the systemically research on the relationship of the three above, this paper thinks that the reuse andrecycle of circular economy is a way that the stall is mended after a sheep is lost. Although the reduction technicallycontrols the production process, it cannot solve the waste caused by blind production and excess competition. We haveexperienced variety obstacles when implementing the circular economy, whose main reason is the conflict between theindividual ration and the social ration. Therefore, only when the individual ration and social ration incline to conformity,the cooperating Nash equilibrium will be appeared. In order to realize the harmony of ecology, economy and society, wehave to explore effective evaluation theory. This paper cites the "five flows of wealth operation theory" from professorMa Chuandong to search operation mechanism of circular economy, makes clear the developing thoughts of circulareconomy based on the realities, and brings forward some countermeasures to develop circular economy based on theabove theoretical analysis.

关键词： Circular economy Operation mechanism Reasonable operation of five flows

DBU-Mediated Carboxylative Coupling of Primary Amines,Carbon Dioxide and Propargyl Chlorides

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Chinese Journal of Chemistry 2015年第5期33卷 610-613页

作者： Wen-Zhen Zhang Xiang Ren Xiao-bing lu State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalianLiaoning 116024China

A carboxylative coupling reaction of various primary amine and 3-phenyl-2-propynyl or 2-nonynyl chloride in the presence of 8-diazabicyclo[5.4.0]undec-7-ene(DBU)using carbon dioxide as carboxylative reagent was *** transition-metal free reaction system shows broad substrate scope and gives a series of propargylcarbamates in moderate to good *** obtained N-alkyl substituted carbamate product can undergo base-catalyzed intramolecular cyclization reaction to afford functionalized 4-methylene-2-oxazolidinone in good yield.

关键词： carbon dioxide fixation amines propargylchlorides carboxylative coupling transition-metal free