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Achieving a High-Strength CoCrFeNiCu High-Entropy Alloy with an Ultrafine-Grained Structure via Friction Stir Processing

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Acta Metallurgica Sinica(English Letters) 2020年第7期33卷 947-956页

作者： Ning Li Cun-Lei Jia Zhi-Wei Wang Li-Hui Wu Ding-Rui Ni Zheng-Kun Li hua-Meng Fu peng Xue Bo-Lv xiao zong-Yi Ma Yi shao Yun-Long Chang School of Material Science and Engineering Shenyang University of TechnologyShenyang 110870China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China

High-entropy alloys(HEAs) are a new class of materials with a potential engineering application,but how to obtain ultrafine or nano-sized crystal structures of HEAs has been a ***,we first presented an equiatomic CoCrFeNiCu HEA with excellent mechanical properties obtained via friction stir processing(FSP).After FSP,the Cu element segregation in the cast CoCrFeNiCu HEA was almost eliminated,and the cast coarse two-phase structure(several micrometers) was changed into an ultrafine-grained single-phase structure(150 nm) with a large fraction of high-angle grain boundaries and nanoscale deformation *** unique microstructure was mainly attributed to the severe plastic deformation during FSP,and the sluggish diffusion effect in dynamics and the lattice distortion effect in crystallography for ***,FSP largely improved the hardness and yield strength of the CoCrFeNiCu HEA with a value of 380 HV and more than 1150 MPa,respectively,which were> 1.5 times higher than those of the base *** great strengthening after FSP was mainly attributed to the significant grain refinement with large lattice distortion and *** study provides a new method to largely refine the microstructure and improve the strength of cast CoCrFeNiCu HEAs.

关键词： grain microstructure deformation

一种适用于高阶QAM信号的改进自恢复均衡算法

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信号处理 2009年第12期25卷 1928-1931页

作者：邵怀宗吴颖肖华电子科技大学通信与信息工程学院成都610054

本文通过对传统的常模算法进行改进和推广,提出了一种新的常模算法。该算法结合了常模算法优势,利用判决符号的指数幂构成的加权项调整代价函数的模值。在均衡器系数迭代的过程中,可以通过选择权系数,调整MSE的估计值,达到提高算法的稳... 详细信息

本文通过对传统的常模算法进行改进和推广,提出了一种新的常模算法。该算法结合了常模算法优势,利用判决符号的指数幂构成的加权项调整代价函数的模值。在均衡器系数迭代的过程中,可以通过选择权系数,调整MSE的估计值,达到提高算法的稳态性能的目的。理论分析和仿真结果表明,对于高阶的QAM信号来说,在相同的条件下,与常规常模算法相比,提出的算法具有更快的收敛速度和更低的稳态残差;当载波频偏较大时,与多模算法相比,提出的算法仅仅均衡信号的能量,不影响其相位,因此,更适合后端的载波同步处理,得到更好的系统性能。

关键词： QAM信号盲均衡新的常模算法

Safety profile of 0.0015%tafluprost eye drops in China:a post-marketing observational study

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International Journal of Ophthalmology(English edition) 2023年第1期16卷 108-114页

作者： Xue-Li Chen Yan-Jing Fu Bo Qu Ye-Wei Wang Xin Tang Yu-Hong Wang Guo-Yi Zhou Ming-Kai Lin Jing-Yuan Shen Jin Yao Su-Yan Li Miao-qin Wu hua-zong peng Ming-Ying Lai Ren-Yi Wu Yi-Nong Zhang Yan Li xiao-Jun Wu Ming-Chang Zhang Su-Ping Guo Xing-huai Sun Department of Ophthalmology Eye&ENT Hospital of Fudan UniversityShanghai 200000China Department of Ophthalmology Daqing Ophthalmologic HospitalDaqing 163000Heilongjiang ProvinceChina Department of Ophthalmology the Fourth Affiliated Hospital of China Medical UniversityShenyang 110000Liaoning ProvinceChina Department of Ophthalmology Da Lian He Eye Specialist HospitalDalian 116000Liaoning ProvinceChina Department of Ophthalmology Beijing Tongren HospitalBeijing 100000China Department of Ophthalmology Xiamen Eye Center of Xiamen UniversityXiamen 361000Fujian ProvinceChina Department of Ophthalmology Yueqing People’s HospitalWenzhou 325600Zhejiang ProvinceChina Department of Glaucoma Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510000Guangdong ProvinceChina Department of Ophthalmology Shengzhou Shen’s Eye HospitalShaoxing 312400Zhejiang ProvinceChina Department of Ophthalmology the Affiliated Eye Hospital of Nanjing Medical UniversityNanjing 210000Jiangsu ProvinceChina Department of Ophthalmology Xuzhou No.1 Peoples HospitalXuzhou 221000Jiangsu ProvinceChina Department of Ophthalmology Zhejiang Provincial People’s HospitalHangzhou 310000Zhejiang ProvinceChina Department of Ophthalmology Wuhan Eyegood Ophthalmic HospitalWuhan 430014Hubei ProvinceChina Department of Ophthalmology Shenzhen Eye HospitalShenzhen 518001Guangdong ProvinceChina Department of Glaucoma Shanghai Heping Eye HospitalShanghai 200000China Department of Ophthalmology Wuxi Second People’s HospitalWuxi 214000Jiangsu ProvinceChina Department of Ophthalmology First Affiliated Hospital of Kunming Medical UniversityKunming 650000Yunnan ProvinceChina Department of Ophthalmology Union Shenzhen Hospital(Nanshan Hospital)Shenzhen 518000Guangdong ProvinceChina Department of Ophthalmology Wuhan Union HospitalWuhan 430000Hubei ProvinceChina Department of Ophthalmology Shengyang He Eye Specialist HospitalShenyang 110000Liaoning ProvinceChina

AIM:To investigate the treatment pattern and safety of tafluprost for glaucoma and ocular hypertension(OH)in clinical practice in ***:This post-marketing observational study included patients who received tafluprost to lower intraocular pressure(IOP)within 30d between September 2017 and March 2020 in 20 hospitals in *** drug reactions(ADRs)during tafluprost treatment and within 30d after the treatment were ***:A total of 2544 patients were included in this study,of them 58.5%(1488/2544)had primary open angle glaucoma(POAG),21.9%(556/2544)had OH and 19.7%(500/2544)used tafluprost for other *** 359 ADRs occurred in 10.1%(258/2544)patients,and no serious adverse event *** most common ADR was conjunctival hyperemia(128 ADRs in 124 patients,4.9%).Totally 1670 participants(65.6%)combined tafluprost with carbonic anhydrase inhibitors(CAIs;37.1%,620/1670),sympathomimetics(33.5%,559/1670),β-blockers(33.2%,555/1670),other prostaglandin analogs(PGAs;15.6%,260/1670)and other eye drops(15.1%,253/1670).The highest incidence of conjunctival hyperemia was noted in patients who received tafluprost in combination with other PGAs(23 ADRs in 23 patients,8.8%,23/260)and the lowest was in combination with CAIs(16 ADRs in 16 patients,2.6%,16/620).Tafluprost was applied in primary angle-closure glaucoma(41.6%,208/500),after glaucoma surgery(17.8%,89/500)and after non-glaucoma surgery(15.8%,79/500).CONCLUSION:Tafluprost is safe for POAG and OH,and tolerable when combined with other eye drops and under various clinical circumstances.

关键词： tafluprost glaucoma ocular hypertension intraocular pressure adverse drug reactions

The In-Flight Realtime Trigger and Localization Software of GECAM

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Research in Astronomy and Astrophysics 2024年第10期24卷 11-24页

作者： xiao-Yun Zhao shao-Lin Xiong Xiang-Yang Wen Xin-qiao Li Ce Cai Shuo xiao qi Luo Wen-Xi peng Dong-Ya Guo Zheng-hua An Ke Gong Jin-Yuan Liao Yan-qiu Zhang Yue huang Lu Li Xing Wen Fei Zhang Jing Duan Chen-Wei Wang Dong-Li Shi peng Zhang qi-Bin Yi Chao-Yang Li Yan-Bing Xu xiao-hua Liang Ya-qing Liu Da-Li Zhang Xi-Lei Sun Fan Zhang Gang Chen huan-Yu Wang Sheng Yang xiao-Jing Liu Min Gao Mao-Shun Li Jin-Zhou Wang Xing Zhou Yi Zhao Wang-Chen Xue Chao Zheng Jia-cong Liu Xing-Bo Han Jin-Ling qi Jia huang Ke-Ke Zhang Can Chen Xiong-Tao Yang Dong-Jie Hou Yu-Sa Wang Rui qiao Xiang Ma xiao-Bo Li Ping Wang Xin-Ying Song Li-Ming Song Shi-Jie Zheng Bing Li Hong-Mei Zhang Yue Zhu Wei Chen Jian-Jian He Zhen Zhang Jin Hou Hong-Jun Wang Yan-Chao Hao Xiang-Yu Wang zong-Yuan Yang Zhi-Long Wen Zhi Chang Yuan-Yuan Du Rui Gao xiao-Fei Lan Yan-Guo Li Gang Li Xu-Fang Li Fang-Jun Lu Hong Lu Bin Meng Feng Shi Hui Wang Hui-Zhen Wang Yu-peng Xu Jia-Wei Yang Xue-Juan Yang Shuang-Nan Zhang Chao-Yue Zhang Cheng-Mo Zhang Zhi-Cheng Tang Cheng Cheng Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China School of Information Science and Technology Southwest Jiaotong UniversityChengdu 611756China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Physics and Space Science College China West Normal UniversityNanchong 637002China Department of Astronomy Beijing Normal UniversityBeijing 100875China Innovation Academy for Microsatellites of CAS Shanghai 201203China Changchun University of Science and Technology Changchun 130022China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesCASBeijing 100101China

Realtime trigger and localization of bursts are the key functions of GECAM,an all-sky gamma-ray monitor launched on 2020 December *** developed a multifunctional trigger and localization software operating in the CPU of the GECAM Electronic *** onboard software has the following features:high trigger efficiency for real celestial bursts with a suppression of false triggers caused by charged particle bursts and background fluctuation,dedicated localization algorithm optimized for both short and long bursts,and low time latency of the trigger information which is downlinked through the Global Short Message Communication service of the global BeiDou navigation *** paper provides a detailed description of the design and development of the trigger and localization software system for *** covers the general design,workflow,the main functions,and the algorithms used in the *** paper also includes on-ground trigger tests using simulated gamma-ray bursts generated by a dedicated X-ray tube,as well as an overview of the performance for real celestial bursts during its in-orbit operation.

关键词： telescopes instrumentation:detectors methods:observational

管壁具有球形介孔的左手螺旋二氧化硅纳米管的制备

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分子科学学报 2014年第2期30卷 157-160页

作者：彭少华肖泽丽国永敏李宝宗苏州大学材料与化学化工学部江苏苏州215123

通过双模板方法合成了一种管壁具有球形介孔的单手螺旋二氧化硅纳米管.其中,手性两亲性小分子的自组装体控制纳米管的形貌,三嵌段共聚物F127控制管壁中介孔结构和孔径.并借助透射电子显微镜、扫描电子显微镜、多通道物理吸附与孔径分布... 详细信息

通过双模板方法合成了一种管壁具有球形介孔的单手螺旋二氧化硅纳米管.其中,手性两亲性小分子的自组装体控制纳米管的形貌,三嵌段共聚物F127控制管壁中介孔结构和孔径.并借助透射电子显微镜、扫描电子显微镜、多通道物理吸附与孔径分布仪和X-射线多晶衍射分析方法对样品进行了表征.结果表明,此材料的比表面积高达799m2/g,孔径大约是5.7nm.

关键词：手性二氧化硅纳米管介孔双模板

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三体船耐波性的模型试验研究

水动力学研究与进展（A辑） 2007年第5期22卷 619-624页

作者：张文鹏宗智倪少玲汤晓宇师华强郑金伟高云大连理工大学船舶与海洋工程学院辽宁大连116024

通过三体船模型的耐波性试验,包括横摇试验、规则波中的迎浪试验,研究了三体船的耐波性能以及侧体纵向位置对三体船耐波性的影响。试验结果表明,航速对三体船耐波性能的影响与对单体船的影响类似,而侧体纵向位置对于三体船耐波性能的影... 详细信息

通过三体船模型的耐波性试验,包括横摇试验、规则波中的迎浪试验,研究了三体船的耐波性能以及侧体纵向位置对三体船耐波性的影响。试验结果表明,航速对三体船耐波性能的影响与对单体船的影响类似,而侧体纵向位置对于三体船耐波性能的影响是比较大的。

关键词：三体船耐波性侧体位置模型试验

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超深竖井爆破掘进围岩损伤规律数值模拟研究

爆破 2024年第2期41卷 8-14,39页

作者：杨小林张光然褚怀保孙博徐杰王东辉陈璐阳郭鹏王少华河南理工大学土木工程学院焦作451003

为了分析爆破荷载作用下超深竖井围岩损伤演化规律,基于三山岛金矿西岭副井爆破施工实践,采用数值模拟的方法,基于ANSYS/LS-DYNA重启动技术,根据爆破设计方案,利用等效爆炸荷载方法,分别对四种地应力(15 MPa、30 MPa、45 MPa和60 MPa)... 详细信息

为了分析爆破荷载作用下超深竖井围岩损伤演化规律,基于三山岛金矿西岭副井爆破施工实践,采用数值模拟的方法,基于ANSYS/LS-DYNA重启动技术,根据爆破设计方案,利用等效爆炸荷载方法,分别对四种地应力(15 MPa、30 MPa、45 MPa和60 MPa)和四种侧压系数(1.0、1.25、1.5和2.0)条件下超深竖井爆破掘进围岩损伤进行数值计算;分析竖井围岩损伤效应,研究地应力与侧压系数对竖井围岩损伤范围的影响。数值计算结果表明:随着地应力的增大,损伤区域受到明显抑制作用,地应力从15 MPa增加到60 MPa,损伤区域的半径从5.75 m减小到3.4 m;随着侧压系数的增大,爆破损伤区域体现出各向异性,损伤区域向较大地应力方向集中。研究成果为控制竖井围岩爆破损伤提供理论基础。

关键词：超深竖井爆破掘进损伤规律数值模拟等效荷载

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超深竖井围岩体爆破模拟材料选择试验研究

爆破 2024年第4期41卷 1-7页

作者：杨小林徐杰褚怀保孙博王东辉张光然陈璐阳郭鹏王少华河南理工大学土木工程学院焦作451003

研发超深竖井围岩的爆破相似模拟材料并开展物理模型试验,是研究爆破作用下超深竖井围岩的动力响应规律的基础。论文以三山岛金矿西岭副井下二长花岗岩为模拟对象配制花岗岩相似材料,选取铁矿粉、重晶石粉为细骨料,石英砂为粗骨料,松香... 详细信息

研发超深竖井围岩的爆破相似模拟材料并开展物理模型试验,是研究爆破作用下超深竖井围岩的动力响应规律的基础。论文以三山岛金矿西岭副井下二长花岗岩为模拟对象配制花岗岩相似材料,选取铁矿粉、重晶石粉为细骨料,石英砂为粗骨料,松香酒精溶液为黏结材料,石膏为调节材料,采用正交设计法配比模拟材料,测定了不同配比相似材料的力学参数,并进行了各影响因素的敏感性分析和模拟材料的试爆试验。结果表明:基于试件密度、单轴抗压强度和弹性模量,选定的配比方案能够满足室内爆破模型试验的要求;细骨料占总骨料比对模拟材料的密度有较显著影响;粘结剂浓度对模拟材料的抗压强度、抗拉强度、弹性模量和粘聚力均有较显著影响;石膏占比对模拟材料的内摩擦角有较显著影响;高围压作用下模型试块内的应变峰值数值整体较大,并且随着距离的增加,应变峰值的衰减速度逐渐降低。

关键词：超深竖井爆破相似材料正交设计力学性能敏感性分析

精囊镜诊治与药物治疗慢性精囊炎的临床对照研究

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现代泌尿外科杂志 2015年第2期20卷 93-95页

作者：李少鹏蔡建通许志鹏林宗棋张一骅蔡晓东游志远石狮市医院外科福建石狮362700

目的评价经尿道输尿管镜下精囊镜检查及治疗在慢性精囊炎诊断及治疗中的作用。方法 2010年1月-2013年9月间收治的32例慢性精囊炎患者,随机分为2组,分别接受口服药物治疗（左氧氟沙星＋宁泌泰,n=18）和经尿道精囊镜检（手术组,n=14）。... 详细信息

目的评价经尿道输尿管镜下精囊镜检查及治疗在慢性精囊炎诊断及治疗中的作用。方法 2010年1月-2013年9月间收治的32例慢性精囊炎患者,随机分为2组,分别接受口服药物治疗（左氧氟沙星＋宁泌泰,n=18）和经尿道精囊镜检（手术组,n=14）。治疗后随访6个月,比较2组的治疗效果。结果手术组14例患者均顺利完成手术。手术时间20-60min,平均（35.0±14.8）min。随访6个月后疗效比较,手术组14例术后血精均消失,其中有2例术后6个月再发血精,总有效率明显高于药物组（85.7%vs.55.6%,P〈0.05）。结论经尿道输尿管镜下精囊镜检查直视下能观察精囊腔内情况,并针对病因进行治疗,并发症少,是治疗慢性精囊炎的有效方法。

关键词：精囊镜检查慢性精囊炎手术药物治疗