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Particle flux characteristics of a compact high-field cascaded arc plasma device

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Plasma Science and Technology 2021年第11期23卷 59-65页

作者： xiaogang yuan Haishan ZHOU Haodong LIU Bo LI Yong WANG Lei CHANG Xin YANG Chuang WANG Lupeng ZHANG Guangnan LUO Institute of Plasma Physics HFIPSChinese Academy of SciencesHefei 230031People's Republic of China University of Science and Technology of China Hefei 230026People's Republic of China

A new compact cascaded arc device for plasma-wall interaction study is developed at the Institute of Plasma Physics,Chinese Academy of Sciences.A magnetic field up to 0.8 T is achieved to confine plasmas in a 1.2 m long and 0.1 m diameter vacuum *** fluid type analysis in this compact vacuum system was done under high particle flux *** gas pressure obtained by calculation was consistent with the measurement *** argon plasma discharge with ion flux of~0.5×10^(24)m^(-2)s^(-1)is successfully sustained for more than *** effects of magnetic field configuration,gas flow rate,and discharge arc current on the ion flux to target were studied in detail.

关键词： cascaded arc plasma plasma-wall interaction ion flux vacuum design linear plasma device

Endoscopy dissection of small stromal tumors emerged from the muscularis propria in the upper gastrointestinal tract:Preliminary study

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World Journal of Gastrointestinal Endoscopy 2012年第12期4卷 565-570页

作者： Zhi-Gang Huang Xue-Song Zhang Shi-Liang Huang xiaogang yuan Department of Gastroenterology Lihuili Hospital of Ningbo Medical Center

AIM:To investigate the feasibility and safety of the treatment of an upper gastrointestinal(GI) submucosal tumor with endoscopic submucosal dissection(ESD).METHODS:A total of 20 patients with esophageal and gastric submucosal tumors emerged from the muscular layer identified by endoscopic ultrasonography were collected from January 2009 to June *** or dumbbell-like lesions were excluded by an enhanced computerized tomography(CT) *** patients had intravenous anesthesia with propofol and then underwent the ESD procedure to resect these submucosal *** incision was closed by clips as much as possible to decrease complications,such as bleeding or perforation,after resection of the *** the specimens were collected and evaluated by hematoxylin,eosin and immunohistochemical staining,with antibodies against CD117,CD34,desmin,α-smooth muscle actin and vimentin to identify the characteristics of the ***'s criteria was used to evaluate the risk of gastrointestinal stromal tumors(GISTs).All patients underwent a follow-up endoscopy at 3,6 and 12 mo and CT scan at 6 and 12 ***:The study group consisted of 5 men and 15 women aged 45-73 years,with a mean age of 60.2 *** tumors were located in the esophagus,9 in the gastric corpus,4 in the gastric fundus,3 lesions in the gastric antrum and 1 in the gastric *** from the one case in the gastric angulus which was abandoned due to being deeply located in the serosa,94.7%(18/19) achieved complete gross dissection by ESD with operation duration of 60.52±30.32 *** average maximum diameter of tumor was 14.8±7.6 mm,with a range of 6 to 30 mm,and another lesion was ligated by an endoscopic ligator after most of the lesion was *** pathological and immunohistochemical analysis,12 tumors were identified as a GI stromal tumor and 6 were *** count of all 12 GIST lesions was fewer than 5 per 50 HPF and all lesions were at very low(9/12,75.0%) or low risk(3

关键词： Endoscopic submucosal dissection Stromal tumors Leiomyoma Upper gastrointestinal tract

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基于SARSA算法的机器人轴孔装配策略

计算机集成制造系统 2023年第11期29卷 3669-3680页

作者：李少东袁小钢牛捷广西大学广西电力装备智能控制与运维重点实验室广西南宁530004 智能带电作业技术及装备(机器人)湖南省重点实验室湖南长沙410100 带电巡检与智能作业技术国网公司实验室湖南长沙410100 国家电网有限公司北京100031

为解决机器人装配任务中轴孔位姿不确定问题,提高装配操作的成功率、效率和泛化能力,提出一种基于SARSA算法的变参数导纳控制策略。首先,分析了轴孔装配机理,指导运动控制策略设计。其次,仿真分析了不同导纳参数的位置响应,获得控制器... 详细信息

为解决机器人装配任务中轴孔位姿不确定问题,提高装配操作的成功率、效率和泛化能力,提出一种基于SARSA算法的变参数导纳控制策略。首先,分析了轴孔装配机理,指导运动控制策略设计。其次,仿真分析了不同导纳参数的位置响应,获得控制器参数。此外,建立了以插孔深度和单次调整移动量为尺度的动作评估机制,解决装配过程奖励函数建模难题,并在动作价值更新过程引入资格迹函数提高算法学习效率。最后,在真实机器人上开展了3组实验,对比基于位置控制和导纳控制的实验结果验证了所提算法在装配成功率和效率上的提升,从不同初始位姿开始装配的实验结果验证了所提算法的泛化能力。结果表明,所提算法有望解决机器人装配任务中轴孔位姿不确定问题。

关键词：强化学习机器人柔顺控制轴孔装配导纳控制器

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风景园林工程土方测量方法比较分析

测绘通报 2016年第12期 81-85,130页

作者：陈晓刚袁波朱小刚江西师范大学城市建设学院江西南昌330022

风景园林土方工程是一项庞大而复杂的系统工程,涉及面非常广泛,其土方量的准确性对工程的甲乙双方均至关重要,正确选择适当的测量方法是提高风景园林工程土方测量精度的重要途径。目前,断面法、方格网法、等高线法和基于数字地面模型(D... 详细信息

风景园林土方工程是一项庞大而复杂的系统工程,涉及面非常广泛,其土方量的准确性对工程的甲乙双方均至关重要,正确选择适当的测量方法是提高风景园林工程土方测量精度的重要途径。目前,断面法、方格网法、等高线法和基于数字地面模型(DEM)法是风景园林工程土方测量最常用的4种方法,本文从测量方法、测量过程、适用范围及精度控制等方面进行比较分析,指出各自测量方法的优缺点及适用范围,为风景园林土方工程测量提供了理论依据。

关键词：风景园林工程土方测量方法

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论刑事案件中的被害人过错

中国刑事法杂志 2008年第3期3卷 31-39页

作者：王新清袁小刚中国青年政治学院河南省高级人民法院

被害人过错的界定,需要把握被害人行为的不正当性、被害人行为与犯罪行为的关联性以及犯罪行为的针对性。据此展开,判断被害人行为是否构成被害人过错,被害人行为违反某种善良的社会规范是规范条件;被害人主体适格性是主体条件;利益关... 详细信息

被害人过错的界定,需要把握被害人行为的不正当性、被害人行为与犯罪行为的关联性以及犯罪行为的针对性。据此展开,判断被害人行为是否构成被害人过错,被害人行为违反某种善良的社会规范是规范条件;被害人主体适格性是主体条件;利益关联性是事实条件;时间关联性是紧密性条件;犯罪行为的针对性是对象条件。国外有关被害人过错的立法例对我国有借鉴意义,被害人过错影响量刑有其刑事法学、文化传统以及自然法哲学方面的正当性与合理性。结合我国刑事司法实践,被害人过错这一酌定量刑情节需要法定化。

关键词：被害入过错正当性与合理性基础酌定情节法定化

Imidazolium-based ionic polymers for fast and efficient anion-exchange driven capture of Cr2O72-

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Science China Chemistry 2025年

作者： Yishou Wang Xiaonan yuan Xingxing Gou Xiatian Song xiaogang Wang Ling Guo Yanfeng Liu Chengfang Qiao Chunsheng Zhou Yingfeng Han Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources Shaanxi Engineering Research Center for Mineral Resources Clean & Efficient Conversion and New Materials College of Chemical Engineering and Modern Materials Shangluo University Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education Xi'an Key Laboratory of Functional Supramolecular Structure and Materials College of Chemistry and Materials Science Northwest University

The pervasive issue of chromium（VI） contamination,particularly in dichromate (Cr2O2-7),resulting from unchecked industrial growth and inadequate waste management,remains a pressing concern that demands immediate and dedicated ***,we present two novel imidazolium-based ionic polymers （ImIPs）.The ImIPs boast a highly cationic structure rich in bromide（Br-） ions and exhibit remarkable porosity,facilitating the easy exchange of these ions for chromate (Cr2O2-7) through anion *** unique combination leads to exceptional performance,including a high adsorption capacity （423 mg/g）,rapid adsorption rate (75 mg g-1min-1),and a broad operational pH range （2–12）.Moreover,our material demonstrates remarkable reusability,maintaining its efficacy even after 10 cycles without significant loss of *** mechanistic studies underscore the role of ion-exchange chemistry in effectively removing dichromate by the presented ImIPs,providing strong evidence for their suitability as a robust solution to address the ongoing challenges in water *** findings represent a crucial step in developing advanced materials for tackling chromium（VI） pollution.

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基于强化学习的机器人轴孔装配算法

机器人 2023年第3期45卷 321-332页

作者：双丰卢万玉李少东袁小钢广西大学电气工程学院广西电力装备智能控制与运维重点实验室广西南宁530004

为了完成非结构化环境中的机器人轴孔装配任务,提出了一种融入模糊奖励机制的深度确定性策略梯度(DDPG)变参数导纳控制算法,来提升未知环境下的装配效率。建立了轴孔装配接触状态力学模型,并开展轴孔装配机理研究,进而指导机器人装配策... 详细信息

为了完成非结构化环境中的机器人轴孔装配任务,提出了一种融入模糊奖励机制的深度确定性策略梯度(DDPG)变参数导纳控制算法,来提升未知环境下的装配效率。建立了轴孔装配接触状态力学模型,并开展轴孔装配机理研究,进而指导机器人装配策略的制定。基于导纳控制器实现柔顺轴孔装配,采用DDPG算法在线辨识控制器的最优参数,并在奖励函数中引入模糊规则,避免陷入局部最优装配策略,提高装配操作质量。在5种不同直径的孔上进行装配实验,并与定参数导纳模型装配效果进行比较。实验结果表明,本文算法明显优于固定参数模型,并在算法收敛后10步内可完成装配操作,有望满足非结构环境自主操作需求。

关键词：强化学习机器人轴孔装配柔顺控制模糊奖励

Suppression of cell growth and migration by blocking hedgehog signaling pathway in gastric cancer cells

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Suppression of cell growth and migration by blocking hedgeho...

细胞—生命的基础——中国细胞生物学学会2013年全国学术大会·武汉

作者： Runwei Yan Xiang Peng xiaogang yuan Qingtian Luo Yong Li Xuan Huang Nonghua Lv Shiwen Luo Department of Gastroenterology The First Affiliated Hospital of Nanchang UniversityKey Laboratory of Digestive Diseases of Jiangxi Province Center for Experimental Medicine The First Affiliated Hospital of Nanchang University

Background Previous studies suggest Hedgehog signaling is essential for gastric cancer,but the precise function of Hedgehog signaling in gastric cancer is still *** aim of this study is to clarify the role of Hedgehog signaling in gastric tumorigenesis. Methods The expressions of Hedgehog signaling key components in clinical samples of gastric

关键词： Hedgehog signaling pathway gastric cancer Glil cDNA microarray analysis

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基于有限差分法对基坑环境影响的应用浅析

智能城市应用 2024年第11期7卷 23-26页

作者：袁小刚湖北建艺岩土工程勘察设计有限公司湖北荆州434000

深基坑开挖对周边环境的影响成为岩土工程领域的重要分析课题。文中依托荆州市某实际工程项目,基于有限差分法建立三维数值模型,通过对支护结构位移、地表沉降和建筑物变形的模拟与现场监测数据对比,分析了基坑开挖对周边环境的影响。... 详细信息

深基坑开挖对周边环境的影响成为岩土工程领域的重要分析课题。文中依托荆州市某实际工程项目,基于有限差分法建立三维数值模型,通过对支护结构位移、地表沉降和建筑物变形的模拟与现场监测数据对比,分析了基坑开挖对周边环境的影响。结果表明,开挖到底桩顶水平位移最大31.16mm,计算与实测桩身水平位移较为吻合;地表沉降曲线呈现典型的凹形,在此文荷载条件下,距基坑2倍开挖深度(H)处达到最大沉降值16.41mm,在距离超过5H后,沉降影响逐渐减小至接近于零。研究成果为深基坑开挖对周边环境的影响及类似工程的设计与施工优化提供了参考。

关键词：基坑工程周边环境有限差分法