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Journal of Iron and Steel Research International 2017年第1期24卷 91-96页

作者： Si-qian Bao Yang Xu Gang Zhao xiang-bin Huang Huan Xiao Chuan-long ye Na-na Song Qing-ming Chang The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

A grain-oriented silicon steel strip with AlN as main inhibitor was produced by thin slab casting and rolling（TSCR）*** microstructure,texture and precipitates of the hot-rolled strip were investigated by use of optical microscope（OM）,X-ray diffractometer,transmission electron microscope（TEM）and energy dispersive spectroscope（EDS）.The result shows that the microstructure and texture exhibit a through-thickness gradient similar to that of the hot-rolled strip produced by conventional high-temperature slab-reheating process;the preferred orientation varies from {110}〈001〉in the surface layer to{001}〈110〉in the center layer,and the Goss texture with a maximum intensity mainly concentrates on the surface *** addition,some other texture components,for example rotated Goss texture,form in the 1/4thickness layer,which are not observed in the hotrolled strip produced by conventional high-temperature slab-reheating *** precipitates in the hot-rolled strip are mainly（Mn,Cu）S and AlN compound particles with dimension of 100-200 nm,and the fine precipitates are significantly less than that in the hot-rolled strip produced by conventional high-temperature slab-reheating ***,the areal density of the fine precipitates in the center layer is more than that in the surface layer.

关键词： Grain-oriented silicon steel Thin slab casting and rolling process Microstructure Texture Precipitate

黄河流域生态保护政策促进“双碳”目标实现的影响机制与政策作用力仿真——基于DEMATEL-AISM和机器学习模型

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西北大学学报（哲学社会科学版） 2024年第5期54卷 99-114页

作者：司林波宋兆祥李爽西北大学公共管理学院陕西西安710127 西北大学碳中和学院陕西西安710127

生态保护政策在促进黄河流域“双碳”目标实现方面发挥着重要作用,探究其影响机制,可为“双碳”目标下黄河流域的生态保护政策制定与执行提供参考和指导。采用DEMATEL-ASIM方法构建影响机制模型,并引入机器学习算法,完成生态保护政策对... 详细信息

生态保护政策在促进黄河流域“双碳”目标实现方面发挥着重要作用,探究其影响机制,可为“双碳”目标下黄河流域的生态保护政策制定与执行提供参考和指导。采用DEMATEL-ASIM方法构建影响机制模型,并引入机器学习算法,完成生态保护政策对“双碳”目标实现的作用力仿真。研究发现:①黄河流域生态保护政策促进“双碳”目标实现的影响机制是涵盖了触发因素、中介因素、驱动因素和结果因素的多层级复杂系统,其中生态保护政策制定强度和执行强度是影响机制中的关键影响因素,而碳排放规模和生态碳汇能力间的影响因素因果联结构成了影响机制的“传导径流”;②在政策作用力仿真中,生态保护政策制定与执行强度对“双碳”目标实现的影响具有异质性、非线性正面响应效应、“触底-反弹”现象和“天花板”效应,黄河流域上中下游地区应该选择差异化的政策制定和执行强度组合方案。

关键词：黄河流域生态保护政策 “双碳”目标政策作用力仿真

Microstructure and Its Influence on the Mechanical Properties of Ni–28W–6Cr-Based Alloy-Welded Joints by GTAW

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Acta Metallurgica Sinica(English Letters) 2019年第8期32卷 1032-1040页

作者： Shuang-Jian Chen xiang-Xi ye D.K.L.Tsang Li Jiang Chao-Wen Li Kun Yu Zhi-Jun Li Center for Thorium Molten Salt Reactor System Shanghai Institute of Applied Physics Chinese Academy of Sciences

Microstructure and mechanical properties of Ni-28W-6Cr alloy-welded joints produced by gas tungsten arc welding were investigated in this *** showed that original fine-grain base metal near fusion line totally transformed into coarse heat affected zone after *** with different shapes were found in the weld metal and base metal,which all were determined as M6C *** comparison with carbides in base metal,M6C carbides in weld metal are rich in Si and Cr but deficient in ***,M6C carbides are extremely scarce and hard to be detected in weld *** tests show that the hardness value of weld metal is only about 60%of base metal;the yield strength and tensile strength of welded joint are much lower than those of base metal due to the absence of carbides in weld metal.

关键词： Welding Ni-W-Cr alloy Carbides Microstructure Hardness Tensile properties

Research with KNbO_(3) Bulk and Surface Properties Based on Density Functional Theory

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Chinese Physics Letters 2013年第2期30卷 186-189页

作者： SUN Hong-Guo zhou Zhong-xiang YUAN Cheng-Xun YANG Xiao-Niu Polymer Composites Engineering Laboratory Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022 Department of Physics Harbin Institute of TechnologyHarbin 150001

The geometrical structure optimization,band structure,density of states,and charge density contour of potassium niobate(KNbO_(3))in the bulk[100]direction and(100)surface are calculated and analyzed using density functional *** elastic constants,which can describe the bonding characteristics and structural stability,are also computed,and the dielectric function,which can be used to calculate all the other optical properties of the material,is *** density approximation functional analysis using CASTEP software is also *** similarities and differences are observed in the properties of the KNbO_(3) bulk and *** all of the calculated results for the bulk sample are twice those of the surface *** results are consistent with the experiment.

关键词： KNbO3 functional potassium

Seed Setting and Its Spatial Characteristics in Tartary Buckwheat(Fagopyrum tataricum)

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Phyton-International Journal of Experimental Botany 2022年第8期91卷 1659-1669页

作者： Dabing xiang Yue Song Chao Song Yan Wan Xueling ye Changying Liu Chenggang Liang Gang Zhao Key Laboratory of Coarse Cereal Processing Ministry of Agriculture and Rural AffairsCollege of Food and Biological EngineeringChengdu UniversityChengdu610106China French Associates Institute for Agriculture&Biotechnology of Drylands Jacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevBeersheba84990Israel Research Center of Buckwheat Industry Technology Guizhou Normal UniversityGuiyang550001China

A low seed-setting rate is the main limiting factor influencing Tartary buckwheat production under high-yield cultivation *** investigate the seed setting and its spatial characteristics,two Tartary buckwheat cultivars(high seed-setting rate cultivar Qianku 3;low seed-setting rate cultivar Liuku 3)were compared by a two-year field trial in 2017 and *** results showed that the Tartary buckwheat underwent simultaneous flowering and ***,generated from branch,were still blooming during the mature stage of grains on stem,which resulting in a greater number of flowers and grains on the branch than those on the stem at the low part of *** seed-setting characteristics significantly differed between two *** high seed-setting rate of Qianku 3 was 26.6%and 33.2%higher than Liuku 3 in 2017 and 2018,***,Qianku 3 showed a higher filled grain number(157.8%)and seed-setting rate(66.4%)on branch than Liuku 3.A network analysis showed that the whole-plant seed-setting rate was positively correlated with grain number,which was closely correlated with flower number at the same position of *** path-coefficient analysis revealed that grains number on branches was the most dominant component(Path coefficient(P)=2.19)of the seed-setting rate,followed by grains number on stem(P=0.60).The grains number on branches showed the greatest positive direct effect with significant correlation(r=0.76 and P<0.01)on the seed-setting ***,the present study indicated that the grain number of branches may play a vital role in improving the seed-setting rate in Tartary buckwheat.

关键词： Grain number path-coefficient analysis seed-setting rate tartary buckwheat

智慧图书馆视角下公共图书馆智能咨询应用与探索——以广东省立中山图书馆为例

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图书馆学刊 2024年第6期46卷 93-97页

作者：梁相广东省立中山图书馆广东广州510110

通过实证调查法和网络调查法,研究分析公共图书馆开展智能咨询服务的现状,以广东省立中山图书馆为例,介绍智能咨询机器人的技术框架搭建、实现路径、功能服务以及应用效果,探讨未来智慧图书馆智能问答咨询服务的发展趋势与服务模式。在... 详细信息

通过实证调查法和网络调查法,研究分析公共图书馆开展智能咨询服务的现状,以广东省立中山图书馆为例,介绍智能咨询机器人的技术框架搭建、实现路径、功能服务以及应用效果,探讨未来智慧图书馆智能问答咨询服务的发展趋势与服务模式。在智能咨询系统的构建与完善方面,提出建立省级或区域性智能咨询平台、整合资源打造大百科知识型平台、拓展智能咨询系统接入渠道、建立知识库及时反馈更新机制等建议。

关键词：智慧图书馆智能咨询知识库人工智能咨询平台

KRAS and BRAF gene mutations and DNA mismatch repair status in Chinese colorectal carcinoma patients

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World Journal of Gastroenterology 2015年第5期21卷 1595-1605页

作者： Ju-xiang ye Yan Liu Yun Qin Hao-Hao Zhong Wei-Ning Yi Xue-Ying Shi Department of Pathology School of Basic Medical SciencesPeking University Third Hospital Peking University Health Science Center Department of Epidemiology and Biostatistics Peking University Health Science Center

AIM:To investigate gene mutations and DNA mismatch repair(MMR) protein abnormality in Chinese colorectalcarcinoma(CRC) patients and their correlations with clinicopathologic ***:Clinical and pathological information for 535 patients including 538 tumors was reviewed and *** analyses for exon 2 of KRAS gene and exon 15 of BRAF gene were performed by Sanger sequencing except that in 9 tumors amplification refractory mutation system PCR was *** of MMR proteins including MHL1,MSH2,MSH6 and PMS2 was evaluated by *** of KRAS and BRAF mutation status and the expression status of MMR proteins with age,gender,cancer stage,location,and histology were *** between KRAS or BRAF mutations and MMR protein expression were also ***:The overall frequencies of KRAS and BRAF mutations were 37.9% and 4.4%,*** mutations were more common in patients ≥ 50 years old(39.8% vs 22% in patients years old,P years old) patients(12.0% vs 4.0% ≥ 50 years old,P < 0.05).MMR deficient tumors were less likely to have KRAS mutations(18.8% vs 41.7% in MMR proficient tumors,P < 0.05) and tumorswith abnormal MLH1/PM

关键词： Colorectal carcinoma KRAS BRAF DNA mismatch repair

Differences in IFNβ secretion upon Rab1 inactivation in cells exposed to distinct innate immune stimuli

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Cellular & Molecular Immunology 2021年第6期18卷 1590-1592页

作者： Jing Yang xiang zhou Rui Zhang Hui Sun Fuping You Zhengfan Jiang Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education School of Life SciencesPeking-Tsinghua Center for Life SciencesPeking UniversityBeijing 100871China Cuiying Biomedical Research Center Lanzhou University Second HospitalLanzhou 730030 GansuChina Institute of Systems Biomedicine Department of ImmunologySchool of Basic Medical SciencesBeijing Key Laboratory of Tumor Systems BiologyPeking University Health Science CenterBeijing 100191China College of Life Sciences&Health Wuhan University of Science&TechnologyHubei 430065China College of Life Sciences&Health Wuhan University of Science&TechnologyHubei 430065China

Type I interferons(IFNs)are secretory cytokines with protective roles against viral *** studies have focused on the signaling pathways that regulate the transcriptional activation of type I IFNs;however,little is known about the secretory mechanism of these cytokines,except for information obtained from a few studies reporting the secretion polarity of IFNβin epithelial cells.1,2,3,4 Here,we investigate the role of Rab1,a small GTPase of the Rab family,in IFNβ*** show that Rab1 inactivation blocked the secretion of IFNβfrom human embryonic kidney 293T(HEK293T)cells transfected with IFNβ-inducing molecules(TRIF,MAVS,and TBK1)but not from cells stimulated with RNA ligands(Sendai virus)(SeV)or polyinosinic:polycytidylic acid(poly(I:C)).Despite the differential effects of Rab1 inactivation and regardless of the triggering stimuli,IFNβsecretion was inhibited by brefeldin A(BFA),a fungal metabolite that inhibits ER-to-Golgi *** addition,a proportion of endogenous 3×Flag-tagged IFNβcolocalized with the cis-Golgi marker GM130 within SeV-infected *** results indicate that IFNβsecretion generally requires the conventional ER-Golgi pathway while showing differential responses to Rab1 inactivation in cells exposed to distinct innate immune stimuli.

关键词： protective inhibited IFNβ

Study on Oxidation of Pyrite by In Situ Absorption Spectroscopy

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光谱学与光谱分析 2010年第12期30卷 3375-3378页

作者： ZHAO Zhen-hua ZHANG Ping CHEN Yong-heng YAO Yan WU Ying-juan GENG Xin-hua DENG xiang-zhou School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China

Pyrite is one of the common natural *** is easily oxidized and brings heavy metal contaminations,therefore it is the main source of acidity mine *** study on the dynamics of pyriteis helpful to comprehending the mechanism of its *** the present paper,an experi mental method was designed that phenanthroline reacts with Fe2+ that is released from pyrite in solution,and produces stable orange-red complex *** can be detected by absorption ***-situ characterization of oxidation of pyrite can be achieved by this *** results showed that the method is reliable and accurate,and it has high sensitivity and little interference;the reaction rate of oxidation increasedl inearly with time,corresponding to the characterization of zero-order reaction;oxidation of pyrite belongs to the surface reaction and the process of surface reactionis rate determining step.

关键词：黄铁矿氧化反应检测方法灵敏度

Nuclear decay database in fission product mass region

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Chinese Physics C 2024年第7期48卷 176-180页

作者：黄小龙杨东葛智刚王香涵刘洋阳金永利李剑 China Nuclear Data Center China Institute of Atomic EnergyBeijing 102413China College of Physics Jilin UniversityChangchun 130012China

Accurate and reliable nuclear decay databases are essential for fundamental and applied nuclear research ***,decay data are not usually as accurate as expected and need ***,a new Chinese nuclear decay database in the fission product mass region(A=66−172)based on several major national evaluated data libraries has been developed under joint efforts in the CNDC working group.A total of 2358 nuclides have been included in this decay *** main data formats,namely ENSDF and ENDF,have been *** the total meanβandγenergies,available data from total absorption gamma ray spectroscopy measurements have been *** some nuclides without experimental measurements,theoretically calculated values have been added.

关键词： nuclear decay data evaluation database fission product mass region