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Comparisons of{100}texture improvement and formability in hot-rolled non-oriented electrical steel by austenite-ferrite phase transformation and shear deformation

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Journal of Iron and Steel Research International 2025年第1期32卷 171-185页

作者： Chi-hao Yu Hong-jiang Pan yan-ping Zhao De-ting Tang Hai-jun Wang Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming650093YunnanChina School of Electronics and Information Engineering Anshun UniversityAnshun561000GuizhouChina School of Metallurgical Engineering Anhui University of TechnologyMa’anshan243032AnhuiChina

Over the years,the high magnetic induction of industrial Mn-added electrical steel is assumed to be the enhancement of{100}texture derived from its austenite-ferrite phase transformation during hot rolling(phase transformation(PT)method).However,it is still undetermined without straightforward experimental *** reason for{100}texture improvement of Mn-added electrical steel is experimentally confirmed due to the recrystallization induced by the austenite-ferrite phase transformation during hot ***,a more promising methodology to further improve{100}texture and formability of hot-rolled electrical steel is promoted by the control of hot rolling deformation condition(shear deformation(SD)method).The results show that the nucleation mechanisms of{100}oriented recrystallized grains are different in the samples by SD and PT methods,which are in-depth shear deformation and austenite-ferrite phase transformation,*** this case,coarse{100}oriented recrystallized grains and low residual stress are obtained in the sample by SD method,which is responsible for its superior{100}texture and *** contrast,the sample by PT method forms fine recrystallized grains with random orientations and accumulates severe residual stress.

关键词： Non-oriented electrical steel {100}texture Formability Austenite-ferrite phase transformation Shear deformation

Experimental investigation on combustion and unregulated emission characteristics of butanol-isomer/gasoline blends

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Journal of Central South University 2019年第8期26卷 2244-2258页

作者： LI Yuan-xu NING Zhi yan jun-hao School of Mechanical Electronic and Control Engineering Beijing Jiaotong UniversityBeijing 100044 China Beijing Key Laboratory of New Energy Vehicle Powertrain Beijing Jiaotong University Beijing 100044 China Department of Mechanical Science and Engineering University of Illinois at Urbana-ChampaignIL 61801 USA

Effects of butanol isomers on characteristics of combustion and emission were studied on PFI SI engine. Experiments were operated under the condition of 3 and 5 bar brake mean effective pressure (BMEP) engine loads and different equivalence ratios (φ=0.83-1.25) with engine speed of 1200 r/min using blends made of 70 vol.% gasoline and 30 vol.% butanol isomers (N30, S30, I30 and T30). The results indicated that compared with gasoline, all butanol isomer blends have higher cylinder pressure. N30 has the highest and most advanced peak pressure, and T30 shows a higher brake specific fuel consumption (BSFC) and lower brake thermal efficiency (BTE). N30 presents a lower UHC emissions and I30 has slightly higher CO emissions than other blends. For unregulated emissions, compared with gasoline, butanol isomer blends have higher acetaldehyde, and N30 produces a higher emission of 1,3-butadiene than other blends. A reduction in benzene, toluene, ethylbenzene and xylene (BTEX) has been found with butanol isomer blends.

关键词： Butanol isomers unregulated emission combustion characteristics gas chromatograph SI engine

Impact of Assimilation of FY-4A GIIRS Three-Dimensional Horizontal Wind Observations on Typhoon Forecasts

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ADVANCES IN ATMOSPHERIC SCIENCES 2025年第3期42卷 467-485页

作者： Wang, hao Han, Wei Li, jun Chen, hao Yin, Ruoying China Meteorol Adm CMA Earth Syst Modeling & Predict Ctr CEMC Beijing 100081 Peoples R China Chinese Acad Meteorol Sci State Key Lab Severe Weather LaSW China Meteorol Adm Beijing 100081 Peoples R China China Meteorol Adm Natl Satellite Meteorol Ctr FYSIC Beijing 100081 Peoples R China Jiangsu Meteorol Observ Nanjing 210008 Peoples R China China Meteorol Adm Key Lab Transportat Meteorol Nanjing 210008 Peoples R China

Measurements from a hyperspectral infrared (HIR) sounder onboard a satellite in geostationary orbit not only provide atmospheric thermodynamic information, but also can be used to infer dynamic information with high temporal resolution. Radiance measurements from the Geostationary Interferometric Infrared Sounder (GIIRS), obtained with 15-min temporal resolution during Typhoon Maria (2018) and 30-min temporal resolution during Typhoon Lekima (2019), were used to derive three-dimensional (3D) horizontal winds by tracking the motion of atmospheric moisture. This work focused on the impact of assimilation of 3D winds on typhoon analyses and forecasts using the operational NWP model of the China Meteorological Administration (CMA-MESO), and improved understanding of the potential benefits of assimilating dynamic information from geostationary sounder data with higher temporal resolution. The standard deviation of the observations minus simulations revealed that the accuracy of the derived 3D winds with 15-min resolution was higher than that of derived winds with 30-min resolution. Experiments showed that the assimilation system can effectively absorb the information of the derived 3D winds, and that dynamic information from clear-sky areas can be transferred to typhoon areas. In typhoon prediction, assimilation of the derived 3D winds had greatest influence on the typhoon track, and less influence on the maximum wind speed. Assimilation of the derived 3D winds reduced the average track error by 17.4% for Typhoon Maria (2018) and by 3.5% for Typhoon Lekima (2019) during their entire 36-h forecasts initiated at different times. Assimilation of GIIRS dynamic information can substantially improve forecasts of heavy precipitation by CMA-MESO. Results indicate that the assimilation of dynamic information from high-temporal-resolution geostationary HIR sounder data adds value for improved numerical weather prediction. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic

关键词： GIIRS 3D horizontal winds typhoon CMA-MESO (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) (sic)(sic)(sic)(sic) (sic)(sic) (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)

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变电站电压无功综合自动控制问题探讨

电网技术 2000年第7期24卷 41-43,48页

作者：严浩军宁波电业局浙江省宁波市315010

根据浙江宁波电网所采用的多种电压无功综合自动控制器 ( VQC)的调试和运行情况 ,对 VQC的几个主要技术问题 ,如 :闭锁问题、人机界面问题、运行方式和控制策略问题等进行了分析和研究。指出了现阶段 VQC的常见问题和改进要求。另外 ,... 详细信息

根据浙江宁波电网所采用的多种电压无功综合自动控制器 ( VQC)的调试和运行情况 ,对 VQC的几个主要技术问题 ,如 :闭锁问题、人机界面问题、运行方式和控制策略问题等进行了分析和研究。指出了现阶段 VQC的常见问题和改进要求。另外 ,对目前中国电网 VQC的几种应用方式 ,即后台机软件 VQC、自动化系统网络 VQC、自带 I/O系统的独立 VQC的结构和优缺点进行了比较。

关键词：变电站电压无功功率

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花岗岩热破裂裂隙动态演化特性数值模拟研究

岩土力学 2024年第S01期45卷 694-704页

作者：周长冰闫俊豪李小双绍兴文理学院土木工程学院浙江绍兴312000 绍兴文理学院岩石力学与地质灾害浙江省重点实验室浙江绍兴312000

为揭示不同压力条件下花岗岩热破裂裂隙演化规律,采用数值计算方法,结合细观损伤理论,建立了岩石热-弹性本构模型,提出了适用于Comsol Multiphysics数值计算软件的矿物颗粒形态提取技术。开展了静水压力及单轴压力下花岗岩热破裂数值模... 详细信息

为揭示不同压力条件下花岗岩热破裂裂隙演化规律,采用数值计算方法,结合细观损伤理论,建立了岩石热-弹性本构模型,提出了适用于Comsol Multiphysics数值计算软件的矿物颗粒形态提取技术。开展了静水压力及单轴压力下花岗岩热破裂数值模拟研究,分析了拉伸和剪切裂隙动态发育过程。研究结果表明:花岗岩内矿物热破裂顺序依赖于各自的力学特性、强度,3种矿物的破裂顺序为云母、长石、石英,热破裂裂隙网络由拉伸裂隙和剪切裂隙组成,拉伸裂隙的发育主导了裂缝网络形成。裂隙演化可划分为3个阶段:微裂隙萌生阶段、裂隙爆发阶段、稳定增长阶段。热破裂阈值受最小主应力控制,单轴压力对阈值的影响较小,受静水压力的影响较大。静水压力下裂隙发育没有明显的方向性,单轴压力压扩展方向垂直于最小主应力,压力越大方向性越明显。

关键词：花岗岩热破裂数值计算裂隙扩展

Positron annihilation study of defect formation and evolution in matrix graphite under He ion irradiation

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Nuclear Science and Techniques 2025年第1期36卷 13-21页

作者： Hong-Xia Xu Jian-Dang Liu Bang-Jiao Ye Zi-Wen Pan jun Lin Jin-Liang Song Jian-Qing Cao Chao yan Ying-Ping hao Jin-Xing Cheng Qing-Bo Wang Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai 200025China Beijing Institute of High Technology Beijing 100094China

The stability of matrix graphite under neutron irradiation and in corrosive environments is crucial for the safe operation of molten salt reactors(MSRs).Raman spectroscopy and a slow positron beam were employed to investigate the effects of He ion irradiation fluences and subsequent annealing on the microstructure and defects of the matrix *** ions with 500 keV energy and fluences ranging from 1.1×10^(15)ions∕cm^(2)to 3.5×10^(17)ions∕cm^(2)were used to simulate neutron irradiation at 300 *** samples with an irradiation fluence of 3.5×10^(16)ions∕cm^(2)were subjected to isochronal annealing at different temperatures(573 K,873 K and 1173 K)for 3 *** Raman results revealed that the D peak gradually increased,whereas the intrinsic G peak decreased with increasing irradiation *** the same irradiation fluence,the D peak gradually decreased,whereas the intrinsic G peak increased with increasing annealing *** positron beam analysis demonstrated that the density or size of irradiation defects(vacancy type)increased with higher irradiation fluence,but decreased rapidly with increasing annealing *** Raman spectral analysis of sample cross sections subjected to high irradiation fluences revealed the emergence of amorphization precisely at the depth where ion damage was most pronounced,whereas the surface retained its crystalline *** and positron annihilation analyses indicated that the matrix graphite exhibited good irradiation resistance to He ions at 300 ***,vacancy-type defects induced by He ion irradiation exhibit poor thermal stability and can be easily removed during annealing.

关键词： Graphite Positron annihilation Irradiation Raman spectrum

Impact of Assimilation of FY-4A GIIRS Three-Dimensional Horizontal Wind Observations on Typhoon Forecasts

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Advances in Atmospheric Sciences 2025年第03期 467-485页

作者： hao WANG Wei HAN jun LI hao CHEN Ruoying YIN CMA Earth System Modeling and Prediction Center (CEMC) China Meteorological Administration State Key Laboratory of Severe Weather (LaSW) Chinese Academy of Meteorological SciencesChina Meteorological Administration FYSIC National Satellite Meteorological CenterChina Meteorological Administration Jiangsu Meteorological Observatory Key Laboratory of Transportation Meteorology China Meteorological Administration

Measurements from a hyperspectral infrared(HIR) sounder onboard a satellite in geostationary orbit not only provide atmospheric thermodynamic information, but also can be used to infer dynamic information with high temporal *** measurements from the Geostationary Interferometric Infrared Sounder(GIIRS), obtained with 15-min temporal resolution during Typhoon Maria(2018) and 30-min temporal resolution during Typhoon Lekima(2019), were used to derive three-dimensional(3D) horizontal winds by tracking the motion of atmospheric moisture. This work focused on the impact of assimilation of 3D winds on typhoon analyses and forecasts using the operational NWP model of the China Meteorological Administration(CMA-MESO), and improved understanding of the potential benefits of assimilating dynamic information from geostationary sounder data with higher temporal resolution. The standard deviation of the observations minus simulations revealed that the accuracy of the derived 3D winds with 15-min resolution was higher than that of derived winds with 30-min resolution. Experiments showed that the assimilation system can effectively absorb the information of the derived 3D winds, and that dynamic information from clear-sky areas can be transferred to typhoon areas. In typhoon prediction, assimilation of the derived 3D winds had greatest influence on the typhoon track, and less influence on the maximum wind speed. Assimilation of the derived 3D winds reduced the average track error by 17.4% for Typhoon Maria(2018) and by 3.5% for Typhoon Lekima(2019) during their entire 36-h forecasts initiated at different times. Assimilation of GIIRS dynamic information can substantially improve forecasts of heavy precipitation by CMAMESO. Results indicate that the assimilation of dynamic information from high-temporal-resolution geostationary HIR sounder data adds value for improved numerical weather prediction.

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磷酸二酯酶10A及其研究进展

上海交通大学学报（医学版） 2015年第12期35卷 1904-1910页

作者：闫军浩沈倩诚王争上海交通大学医学院附属仁济医院普外科上海200127 上海交通大学基础医学院细胞分化与凋亡教育部重点实验室上海200025

磷酸二酯酶10A(PDE10A)是磷酸二酯酶第10家族中的唯一成员,水解第2信使c AMP和c GMP,从而参与许多细胞内信号转导通路的调节。PDE10A在大脑纹状体中的高表达,提示其参与纹状体功能障碍相关疾病的发病过程;此外,PDE10A在某些外周疾病相... 详细信息

磷酸二酯酶10A(PDE10A)是磷酸二酯酶第10家族中的唯一成员,水解第2信使c AMP和c GMP,从而参与许多细胞内信号转导通路的调节。PDE10A在大脑纹状体中的高表达,提示其参与纹状体功能障碍相关疾病的发病过程;此外,PDE10A在某些外周疾病相关组织细胞中的表达升高;因此,PDE10A可能在多种疾病的发生和发展过程中发挥着重要作用。尽管PDE10A在医学研究和药物开发中越来越受到关注,但其结构、功能及生理/病理调节机制的研究仍存在诸多问题,特别是PDE10A的选择性抑制剂PF-2545920(MP-10)在治疗精神分裂症临床Ⅱ期试验的失败,促使人们重新审视PDE10A在中枢内的功能以及PDE10A能否真正成为治疗靶点。鉴于此,该文从PDE10A的基本特征、结构与功能和相关疾病等方面进行总结,以期指导对其进行进一步的研究和应用。

关键词：磷酸二酯酶磷酸二酯酶10A 磷酸二酯酶抑制剂纹状体精神分裂症亨廷顿病

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染色体异常与自然流产

中国实用妇科与产科杂志 2020年第11期36卷 1045-1050页

作者：邵雨菡颜军昊山东大学附属生殖医院山东济南250012

染色体异常是自然流产的常见原因,包括夫妇染色体异常和胚胎染色体异常。其中夫妇染色体异常涉及结构异常,如相互易位、罗氏易位、倒位等;数目异常,如特纳综合征、克氏综合征等。胚胎染色体异常以非整倍体为主。文章将对染色体异常与自... 详细信息

染色体异常是自然流产的常见原因,包括夫妇染色体异常和胚胎染色体异常。其中夫妇染色体异常涉及结构异常,如相互易位、罗氏易位、倒位等;数目异常,如特纳综合征、克氏综合征等。胚胎染色体异常以非整倍体为主。文章将对染色体异常与自然流产的相关研究进展予以阐述。

关键词：染色体异常自然流产植入前遗传学检测