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Apparent Kinetics of 1-Decene Polymerization Catalyzed Using the Ionic liquid[Bmim]_(x)[C_(2)H_(5)NH_(3)]_(1-x)[al_(2)Cl_(7)]

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China Petroleum Processing & Petrochemical Technology 2023年第4期25卷 16-22页

作者： Chen Yingze He Jinxue Wang Ben Pan Shiguang Zhang di Bai Zhongxiang An liangcheng liu Dan Ma Aijing li Hu Gui Jianzhou State Key laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Green Chemical Technology and Process Engineeringand School of Chemical Engineering and TechnologyTiangong UniversityTianjin 300387China School of Material Science and Engineering Tiangong UniversityTianjin 300387China Ningxia Coal Industry Co.ltd. CHN ENERGYYinchuan 750011China School of Chemistry Tiangong UniversityTianjin 300387China

Poly-α-olefin(PAO)synthetic oil,a regular long-chain al.ane produced from the catalytic polymerization ofα-olefin,is a high-quality lubricating base oil with huge market *** this study,PAO synthesis based on the catalytic polymerization of 1-decene using the ionic liquid(Il)[Bmim]_(x)[C_(2)H_(5)NH_(3)]_(1-x)[al_(2)Cl_(7)]as the catalyst was *** with the conventional catalyst[Bmim][al_(2)Cl_(7)],the obtained PAO product incorporates more trimers and tetramers of 1-decene and contains few double-bond end groups,demonstrating a better catalytic system for PAO-10 *** apparent polymerization kinetics of 1-decene in this catalytic system were studied based on the 1-decene concentration,catalyst concentration,and reaction *** apparent kinetic equation for PAO formation was determined,providing a promising strategy for PAO production using 1-decene polymerization.

关键词： poly-α-olefin 1-decene ionic liquid apparent kinetics catalytic polymerization

Male heterogametic sex determination in Rana dybowskii based on sex-linked molecular markers

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Integrative Zoology 2022年第1期17卷 105-114页

作者： Yuan XU Zhiheng DU Jiayu lIU Hang SU Fangyong NING Shiquan CUI lijuan WANG Jianming lIU Chuanshuai REN Shengwei di Xiujuan BAI College of Animal Science and Technology Northeast Agricultural UniversityHarbinChina College of life Sciences Northeast Agricultural UniversityHarbinChina College of Agricultural Eastern Liaoning UniversityDandongChina Yili Animal Science Research Institute YiningChina Animal Husbandry Administration of Huadian HuadianChina Branch of Animal Husbandry and Veterinary of Heilongjiang Academy of Agricultural Sciences QiqiharChina

Identifying the mechanism for sex determination in amphibians is *** little is known about sex determination mechanisms of Rana dybowskii,a species of importance to evolutionary and conservation *** screened for sex-linked molecular markers in *** in China using target region amplification polymorphism with 2 fixed primers against the sequences of *** found 2 male-linked molecular markers in ***,which were 222 bp and 261 bp *** detection rates of 222 bp marker in males form Xinglong,Huadian,and Dandong were 93.79%,69.64%,and 13.64%,respectively,while the rate in females from Huadian was 27.50%.Besides,the detection rates of 261 bp marker in the above 3 regions were only observed in males at the rate of 93.79%,87.50%,and 32.73%,*** inheritance patterns of sex-linked molecular markers showed that the 2 sex-linked molecular markers were *** to the XY-male parent,progeny from XX-pseudo-male parent possessed lower sex reversal ratio at the same rearing temperature,and the proportion of female froglets from an XX-pseudo-male parent was more than 95%at low rearing temperature(15°C).Our findings suggest that *** displays male heterogamety,and the 2 sex-linked molecular markers may have a guiding significance for the protection and utilization of ***.

关键词： male-linked molecular markers Rana dybowskii sexual reversal TRAP markers

The expression,function,and coding potential of circular RNA circEDC3 in chicken skeletal muscle development

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Journal of Integrative Agriculture 2022年第5期21卷 1444-1456页

作者： WEI Yuan-hang ZHAO Xi-yu SHEN Xiao-xu YE lin ZHANG Yao WANG Yan lI di-yan ZHU Qing YIN Hua-dong Farm Animal Genetic Resources Exploration and Innovation Key laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu 611130P.R.China

As an emerging class of non-coding transcripts,circular RNAs(circRNAs)are proved to participate in the complex process of myogenesis in diverse species.A previous study has identified circular RNA EDC3(circEDC3)as a typical covalently closed circular RNA abundant in chicken skeletal *** study found that circEDC3 is a conservative circular RNA and performed functional.analysis to investigate the role of circEDC3 in chicken muscle *** results indicated that circEDC3 could inhibit(Pletal muscle satellite cells(SMSCs)proliferation and differentiation but had no significant influence on SMSCs ***,bioinformatics analysis showed that circEDC3 had promising coding *** open reading frames(ORF)were found in circEDC3 in this ***,this study predicted that circEDC3 had internal ribosome entry sites(IRES)and N6-methyladenosine(m6A)motifs in different species,implying that circEDC3 might be *** study revealed that circEDC3 might be a negative regulator in chicken muscle development and suggested it has protein-coding potential in different species.

关键词： circEDC3 chicken SMSCs myogenesis coding potential

日本汉方药企业专利布局分析——以株式会社津村为例

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中南药学 2024年第5期22卷 1365-1371页

作者：王铁融刘盼侯媛媛曹雅迪陈宁衡宇鑫刘伟北京中医药大学管理学院北京100029 北京中医药大学图书馆北京100029 北京北中岐黄科技投资管理有限公司北京100029 北京中医药大学成果转化中心北京100029

目的对株式会社津村2000—2022年申请的日本专利和中国专利进行分析,了解其技术研发及专利布局方向,并挖掘其战略处方专利布局,以期对我国中药企业有所启示。方法在Incopat专利检索数据库上检索2000—2022年株式会社津村申请的专利,... 详细信息

目的对株式会社津村2000—2022年申请的日本专利和中国专利进行分析,了解其技术研发及专利布局方向,并挖掘其战略处方专利布局,以期对我国中药企业有所启示。方法在Incopat专利检索数据库上检索2000—2022年株式会社津村申请的专利,对其进行专利标引及专利技术分析。结果株式会社津村围绕汉方制剂产业链上下游技术开展专利布局,专利布局连续且技术主题丰富,对我国中药企业具有潜在威胁,战略处方专利布局具有策略性。结论我国企业要制定灵活的专利布局策略,拓宽中药企业专利布局技术覆盖范围,持续研发投入并做好专利防御,策略性搭建重点中药产品专利网。

关键词：日本汉方药株式会社津村专利布局

A Method of Non-textured Regions Matching

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Chinese Journal of Electronics 2019年第3期28卷 598-603页

作者： JIA di ZHAO Mingyuan CAO Jun SONG Weidong School of Electronic and Information Engineering Liaoning Technical University School of Computing Informatics Decision System Engineering Arizona State University School of Geomatics Liaoning Technical University

It is difficult for existing dense or quasidense matching algorithms to obtain accurate matching results due to the lack of effective feature information in non-textured regions. This may affect the quality of subsequent 3 D reconstruction and super-resolution reconstruction. We propose a method of non-textured regions matching. To reduce the impact of noise and illumination, vector sampling normalized cross correlation is proposed to directly measure coherence between two colour images by the effective information of multi-channel features. Three mathematical properties are used in affine transformation: 1) Centroid location is not affected by affine transformation; 2) Affine transformation transforms a straight line into another straight line; 3) Affine transformation maintains the linear relation invariant. In non-textured regions, we can construct texture regions which have affine invariant properties to improve the accuracy of template matching. This could provide more information for the diffusion of dense or quasi-dense matching. In experiments, we demonstrate that the method has high accuracy in cases where there is no big distortion between the two viewing angles from two aspects of simulated images and photographic images.

关键词： Stereo matching Dense matching Nontextured region Affine transformation

CT在评估婴儿型和成人型弯刀综合征的临床应用价值

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CT理论与应用研究（中英文） 2024年第5期33卷 633-639页

作者：洪天予张祺丰李笛王尉李昊岩段晓岷国家儿童医学中心/首都医科大学附属北京儿童医院影像中心北京100045

目的:本文旨在分析弯刀综合征的CT影像学特征及临床意义,以提高对该病的认识。方法:搜集2019年1月至2024年1月确诊弯刀综合征的患者28例,回顾性分析其临床及影像学资料。结果:28例中男10例,女18例;婴儿型15例,成人型13例。婴儿型平均年... 详细信息

目的:本文旨在分析弯刀综合征的CT影像学特征及临床意义,以提高对该病的认识。方法:搜集2019年1月至2024年1月确诊弯刀综合征的患者28例,回顾性分析其临床及影像学资料。结果:28例中男10例,女18例;婴儿型15例,成人型13例。婴儿型平均年龄约(6.78±3.50)月,10例为完全右肺静脉异位引流至下腔静脉,其中3例异位引流处狭窄梗阻,2例合并房间隔缺损及肺动脉高压,该5例行手术治疗;5例为部分右侧肺静脉异位引流至下腔静脉,均合并其他畸形及肺部感染行影像检查时发现。成人型平均年龄约(5.53±2.72)岁,7例为完全右肺静脉异位引流至下腔静脉,其中1例行手术治疗;6例为右下肺静脉异位引流至下腔静脉,其中2例因明确诊断多年行择期手术,2例因叶外型隔离肺行介入治疗体动脉分支供血。结论:婴儿型和成人型弯刀综合征患儿的临床表现有很大差异,利用CT检查的多种成像模式,结合强大重建后处理功能对弯刀综合征患儿进行全面评估,可为临床上治疗方法的选择、手术方案的制定提供依据。

关键词：计算机断层扫描儿科影像弯刀综合征

New methods of controlled-source electromagnetic detection in China

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Science China Earth Sciences 2020年第9期63卷 1268-1277页

作者： Qingyun di Guoqiang XUE Changchun YIN Xiu lI Key laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Frontier Technology and Equipment Development Center for Deep Resources Exploration Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Key laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Geo-exploration Science and Technology Jilin UniversityChangchun 130026China School of Geology Engineering and Geomatics Chang’an UniversityXi’an 710054China

As an important branch of geophysical exploration method,the electromagnetic method with artificial source has advanced rapidly in the past *** methods are classified as airborne electromagnetic method,ground-air electromagnetic method,ground electromagnetic method,and marine electromagnetic *** the years,researchers in China have made significant improvement to the fundamental theory,forward modeling and inverse for series of electromagnetic detection ***,significant progress was made in the development of corresponding *** researched techniques and their developed equipment have been successfully utilized to detect underground targets as deep as 10 ***,there is increasing need for deep resources exploration,urban subsurface study,and prediction,monitoring and detection of geological *** meet the increasing need and catch up with the advanced international level of exploration technologies and developed equipment,there is urgent necessity and requirement to continue developing geophysical methods and the corresponding equipment.

关键词： Controlled-source Electromagnetic method Multiscale Deep earth detection

DSMC: Fast direct simulation Monte Carlo solver for the Boltzmann equation by Multi-Chain Markov Chain and multicore programming

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第2期7卷 152-166页

作者： di Zhao Haiwu He Computer Network Information Center Chinese Academy of Sciences Beijing 100190 P.R.China

direct Simulation Monte Carlo(DSMC)solves the Boltzmann equation with large Knudsen *** Boltzmann equation generally consists of three terms:the force term,the diffusion term and the collision *** the first two terms of the Boltzmann equation can be discretized by numerical methods such as the finite volume method,the third term can be approximated by DSMC,and DSMC simulates the physical behaviors of gas ***,because of the low sampling efficiency of Monte Carlo Simulation in DSMC,this part usually occupies large portion of computational costs to solve the Boltzmann *** this paper,by Markov Chain Monte Carlo(MCMC)and multicore programming,we develop direct Simulation Multi-Chain Markov Chain Monte Carlo(DSMC3):a fast solver to calculate the numerical solution for the Boltzmann *** results show that DSMC3 is significantly faster than the conventional method DSMC.

关键词： Fast solver direct simulation Multi-Chain Markov Chain Monte Carlo DSMC the Boltzmann equation multicore programming

A hybrid multidimensional Riemann solver to couple self-similar method with MUlTV method for complex flows

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Chinese Journal of Aeronautics 2021年第7期34卷 29-38页

作者： Feng QU di SUN Junjie FU Junqiang BAI School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China

Since proposed,the self-similarity variables based genuinely multidimensional Riemann solver is attracting more attentions due to its high resolution in multidimensional complex ***,it needs numerous logical operations in supersonic cases,which limit the method’s applicability in engineering problems *** order to overcome this defect,a hybrid multidimensional Riemann solver,called HMTHS(Hybrid of MulTv and multidimensional Hll scheme based on Self-similar structures),is *** simulates the strongly interacting zone by adopting the MHllES(Multidimensional Harten-lax-van leer-Eifeldt scheme based on Self-similar structures)scheme at subsonic speeds,which is with a high resolution by considering the second moment in the similarity ***,it adopts the MUlTV(Multidimensional Toro and Vasquez)scheme,which is with a high resolution in capturing discontinuities,to simulate the flux at supersonic *** numerical experiments,including both one-dimensional cases and twodimensional cases,are ***-dimensional moving contact discontinuity case and sod shock tube case suggest that HMTHS can accurately capture one-dimensional expansion waves,shock waves,and linear contact ***-dimensional cases,such as the double Mach reflection case,the supersonic shock/boundary layer interaction case,the hypersonic flow over the cylinder case,and the hypersonic viscous flow over the double-ellipsoid case,indicate that the HMTHS scheme is with a high resolution in simulating multidimensional complex ***,it is promising to be widely applied in both scholar and engineering areas.

关键词： Complex flows Computational fluid dynamics Multidimensional Riemann solver Self-similar