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The comparison of multi-layer narrow-gap laser and arc welding of S32101 duplex stainless steel

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China Welding 2022年第4期31卷 37-47页

作者： Li Junzhao Wen Kai Sun Qingjie Liu Yibo kong bin Zeng Xianshan HuNan Xiangtou Goldsky New Materials Co. LTDYiyang 413000China Shandong Provincial Key Laboratory of Special Welding Technology Harbin Institute of Technology at WeihaiWeihai 264209China Hunan Xiangtou Goldsky Titanium Metal Co. LTD.Changsha 410205China

Multi-layer narrow-gap welding of thick S32101 duplex stainless steel was conducted using laser welding with beam wobble *** phase transition,grain size,phase proportion and crystal texture of welded joint were also studied and compared with gas metal arc welding *** microhardness and tensile strength were measured and fracture surface was analyzed to evaluate the mechanical properties of welded *** results showed that beam wobble technology improved the misalignment of laser beam and filler wire in narrow groove and helped to avoid incomplete fusion *** to arc welding process,the groove size and heat input were reduced,while welding efficiency was *** faster cooling rate and lower temperature gradient of laser wobble welding favored grain refinement,while the austenite content in weld zone *** the beam wobble and swing arc were conducive to stir weld pool,optimizing the weld microstructure and joint *** microstructural variance in various weld passes was caused by the heat input and heat dissipation *** microhardness of laser welded joint was lower,while the tensile strength and elongation percentage were *** fracture surface of arc welded joint was featured with shallower dimples and cleavage steps.

关键词： narrow gap welding laser welding gas metal arc welding duplex stainless steel mechanical properties

Exendin-4 inhibits high-altitude cerebral edema by protecting against neurobiological dysfunction

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Neural Regeneration Research 2018年第4期13卷 653-663页

作者： Zhong-Lei Sun Xian-Feng Jiang Yuan-Chi Cheng Ying-Fu Liu Kai Yang Shuang-Long Zhu Xian-bin kong Yue Tu Ke-Feng Bian Zhen-Lin Liu Xu-Yi Chen Affiliated Hospital of Logistics University of Chinese People's Armed Police Forces Institute of Traumatic Brain Trauma and Neurological of CAPF Neurotrauma Repair Key Laboratory of Tianjin Tianjin China Jinzhou Medical University Jinzhou Liaoning Province China Tianjin Medical University Tianjin China Central Hospital of Fengxian District of Shanghai Shanghai China Logistics University of People's Armed Police Force Tianjin China The No. 2 Hospital of Nanjing Nanjing Jiangsu Province China Tianjin University of Traditional Chinese Medicine Tianjin China

The anti-inflammatory and antioxidant effects of exendin-4（Ex-4） have been reported ***,whether（Ex-4） has anti-inflammatory and antioxidant effects on high-altitude cerebral edema（HACE） remains poorly *** this study,two rat models of HACE were established by placing rats in a hypoxic environment with a simulated altitude of either 6000-or 7000-m above sea level（MASL） for 72 *** altitude of 7000 MASL with 72-hours of hypoxia was found to be the optimized experimental paradigm for establishing HACE ***,in rats where a model of HACE was established by introducing them to a 7000 MASL environment with 72-hours of hypoxia treatment,2,10 and,100 μg of Ex-4 was intraperitoneally *** open field test and tail suspension test were used to test animal *** methods were used to detect change in inflammatory ***-eosin staining was performed to determine pathological changes to brain ***/dry weight ratios were used to measure brain water *** blue leakage was used to determine blood-brain barrier ***-linked immunosorbent assay（ELISA） was performed to measure markers of inflammation and oxidative stress including superoxide dismutase,glutathione,and malonaldehyde values,as well as interleukin-6,tumor necrosis factor-alpha,cyclic adenosine monophosphate levels in the brain *** blot analysis was performed to determine the levels of occludin,ZO-1,SOCS-3,vascular endothelial growth factor,EPAC1,nuclear factor-kappa B,and *** results demonstrate that Ex-4 preconditioning decreased brain water content,inhibited inflammation and oxidative stress,alleviated brain tissue injury,maintain blood-brain barrier integrity,and effectively improved motor function in rat models of *** findings suggest that Ex-4 exhibits therapeutic potential in the treatment of HACE.

关键词： high-altitude cerebral edema exendin-4 cyclic adenosine monophosphate EPACI suppressor of cytokine signaling 3 vascular endothelial growth factor hypoxia inflammation oxidative stress

用耗散粒子动力学方法研究高分子链取向对形变液滴回缩法测定界面张力值的影响

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高等学校化学学报 2008年第5期29卷 1056-1060页

作者：毛伟孔滨杨小震中国科学院化学研究所高分子物理与化学国家重点实验室北京100080

在利用形变液滴回缩法(DDRM)测量了分子共混体系界面张力的过程中,要求椭球液滴内高分子链应力松弛速度远快于椭球的回缩速度.我们建立高分子链取向模型,用耗散粒子动力学研究高分子链的取向及应力松弛对界面张力测量值的影响.结果表明... 详细信息

在利用形变液滴回缩法(DDRM)测量了分子共混体系界面张力的过程中,要求椭球液滴内高分子链应力松弛速度远快于椭球的回缩速度.我们建立高分子链取向模型,用耗散粒子动力学研究高分子链的取向及应力松弛对界面张力测量值的影响.结果表明,当高分子链沿着流场方向取向时,应力是否完全松弛对界面张力测量值的影响较大,当高分子链取向方向垂直于流场方向时,应力是否松弛对测量值影响较小.

关键词：耗散粒子动力学分子链取向界面张力形变液滴回缩法

Preparation of MXene-based hybrids and their application in neuromorphic devices

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International Journal of Extreme Manufacturing 2024年第2期6卷 164-188页

作者： Zhuohao Xiao Xiaodong Xiao Ling bing kong Hongbo Dong Xiuying Li bin He Shuangchen Ruan Jianpang Zhai Kun Zhou Qin Huang Liang Chu School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403JiangxiPeople’s Republic of China School of Mechanical and Vehicle Engineering Linyi UniversityLinyi 276000ShandongPeople’s Republic of China College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118GuangdongPeople’s Republic of China School of Mechanical&Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Ningbo Institute of Materials Engineering and Technology Chinese Academy of ScienceNingbo 315201ZhejiangPeople’s Republic of China Institute of Carbon Neutrality and New Energy&School of Electronics and Information Hangzhou Dianzi UniversityHangzhou 310018ZhejiangPeople’s Republic of China

The traditional von Neumann computing architecture has relatively-low information processing speed and high power consumption,making it difficult to meet the computing needs of artificial intelligence(AI).Neuromorphic computing systems,with massively parallel computing capability and low power consumption,have been considered as an ideal option for data storage and AI computing in the ***,as the fourth basic electronic component besides resistance,capacitance and inductance,is one of the most competitive candidates for neuromorphic computing systems benefiting from the simple structure,continuously adjustable conductivity state,ultra-low power consumption,high switching speed and compatibility with existing CMOS *** memristors with applying MXene-based hybrids have attracted significant attention in recent ***,we introduce the latest progress in the synthesis of MXene-based hybrids and summarize their potential applications in memristor devices and neuromorphological *** explore the development trend of memristors constructed by combining MXenes with other functional materials and emphatically discuss the potential mechanism of MXenes-based memristor ***,the future prospects and directions of MXene-based memristors are briefly described.

关键词： MXene etching fabrication memristor neuromorphic

Evaluation of dry eye disease symptomatology and mental health status among patients with different COVID-19 statuses

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International Journal of Ophthalmology(English edition) 2024年第5期17卷 822-830页

作者： Fang Ruan Wen-Jun kong Qian Fan Hong-Wei Dong Wei Zhang Wen-bin Wei Ying Jie Department of Ophthalmology Beijing You’an HospitalCapital Medical UniversityBeijing Infectious Eye Disease Diagnosis and Treatment CenterBeijing 100069China Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical UniversityBeijing Institute of OphthalmologyBeijing Ophthalmology and Visual Sciences Key LabBeijing 100730China Tianjin Eye Hospital Tianjin Key Lab of Ophthalmology and Visual ScienceTianjin Eye InstituteNankai University Affiliated Eye HospitalNankai University Eye InstituteNankai UniversityClinical College of OphthalmologyTianjin Medical UniversityTianjin 300020China

AIM:To evaluate dry eye disease(DED)symptomatology and mental health status in different COVID-19 ***:A cross-sectional observational design was *** 123 eligible adults(46.34%of men,age range,18-59y)with COVID-19 included in the study from August to November,*** Surface Disease Index(OSDI),Five-item Dry Eye Questionnaire(DEQ-5),Hospital Anxiety and Depression Scale(HADS),and Pittsburgh Sleep Quality Index(PSQI)were used in this ***:OSDI scores were 6.82(1.25,15.91)in asymptomatic carriers,7.35(2.50,18.38)in mild cases,and 16.67(4.43,28.04)in recurrent cases,with 30.00%,35.56%,and 57.89%,respectively evaluated as having DED symptoms(χ2=7.049,P=0.029).DEQ-5 score varied from 2.00(0,6.00)in asymptomatic carriers,3.00(0,8.00)in mild cases,and 8.00(5.00,10.00)in recurrent cases,with 27.50%,33.33%,and 55.26%,respectively assessed as having DED symptoms(χ2=8.532,P=0.014).The prevalence of clinical anxiety(50.00%)and depression(47.37%)symptoms were also significantly higher in patients with recurrent infection(χ2=24.541,P<0.001;χ2=30.871,P<0.001).Recurrent infection was a risk factor for high OSDI scores[odds ratio,2.562;95%confidence interval(CI),1.631-7.979;P=0.033]and DEQ-5 scores(odds ratio,3.353;95%CI,1.038-8.834;P=0.043),whereas having a fixed occupation was a protective factor for OSDI scores(odds ratio,0.088;95%CI,0.022-0.360;P=0.001)and DEQ-5 scores(odds ratio,0.126;95%CI,0.039-0.405;P=0.001).CONCLUSION:Patients with recurrent COVID-19 have more severe symptoms of DED,anxiety,and depression.

关键词： COVID-19 dry eye disease recurrent infection mental health

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从礼制到节庆——先秦两汉时期社祭的变迁

山东社会科学 2011年第7期 61-64页

作者：孔宾山东大学历史文化学院山东济南250100

先秦两汉时期的社祭活动,存在着官方和民间两个系统。在西周时期,社祭活动由官方主导,既是一种重要的国家宗教礼制,也是维护贵族统治的有力工具,民间的社祭活动要受到官方的制约。自春秋以后,社会结构发生了深刻的变革,官方对社祭的控... 详细信息

先秦两汉时期的社祭活动,存在着官方和民间两个系统。在西周时期,社祭活动由官方主导,既是一种重要的国家宗教礼制,也是维护贵族统治的有力工具,民间的社祭活动要受到官方的制约。自春秋以后,社会结构发生了深刻的变革,官方对社祭的控制力减弱,而民间社祭活动却不断发展,社祭的政治性和宗教性逐渐淡化,社会性和娱乐性日益增强。到了汉代,社祭成为盛大的民间娱乐活动,实现了从国家礼制到民间节庆的演变。

关键词：先秦两汉官方社祭民间社祭礼制节庆

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手机电视“小融合”促三网“大融合”

广播与电视技术 2006年第10期33卷 45-45,48页

作者：孔彬国家广播电影电视总局广播电视规划院

本文简要分析了手机电视发展现状;根据上海、广州两地T-DMB标准的测试情况,比较了各类手机电视技术标准。最后,在三网融合的大环境下,提出了一种结合广电运营机构和电信运营机构的手机电视业务合作模式。

关键词：手机电视三网融合 T-DMB

民主治理中的集体行动——一个组织行为学议题及其解释

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江苏行政学院学报 2008年第6期 76-82页

作者：孔繁斌南京大学公共管理学院南京210093

作为社会科学想象力的产物,集体行动现象的概念化成为公共生活中最重要的一种知识增长。但在既有的学术研究中,集体行动概念要么偏向于社会抗争性事件的分析,要么在新制度主义经济学的理论假设中作出过度操作化的分析。因此,从建构主义... 详细信息

作为社会科学想象力的产物,集体行动现象的概念化成为公共生活中最重要的一种知识增长。但在既有的学术研究中,集体行动概念要么偏向于社会抗争性事件的分析,要么在新制度主义经济学的理论假设中作出过度操作化的分析。因此,从建构主义行政学出发,在更一般化的理论水平上对集体行动进行研究,这既是科层治理向民主治理转化中提出的一个组织行为学的知识性议题,又是构建前瞻性和承担社会责任的公共行政的关键议题。

关键词：民主治理集体行动行政设计社会建构

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人类视觉与计算机视觉的比较

自然杂志 2002年第1期24卷 51-55页

作者：孔斌中国科学技术大学自动化系

从视错觉等视觉生理现象以及知觉的特性出发 ,对人类视觉与计算机视觉进行比较 ,并根据目前对人类知觉活动 (特别是视知觉活动 )

关键词：人类视觉知觉视错觉计算机视觉