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World Journal of Gastrointestinal Surgery 2023年第6期15卷 1232-1239页

作者： Fu-Wen Pang Bin Chen De-Ti Peng Jian He wei-cheng zhao Tuan-Tuan Chen Zong-Gui Xie Hai-Hui Deng Department of Interventional Radiology Shenzhen Traditional Chinese Medicine HospitalShenzhen 518033Guangdong ProvinceChina Department of Hepatology Shenzhen Traditional Chinese Medicine HospitalShenzhen 518033Guangdong ProvinceChina

BACKGROUND The combination of atezolizumab(ATZ)and bevacizumab(BVZ)was approved as first-line systemic therapy for advanced hepatocellular carcinoma(HCC)owing to its superior rates of response and patient ***,ATZ+BVZ is associated with increased risk of upper gastrointestinal(GI)bleeding,including arterial bleeding,which is rare and potentially *** present a case of massive upper GI bleeding from a gastric pseudoaneurysm in a patient with advanced HCC who had been treated with ATZ+*** SUMMARY A 67-year-old man presented with severe upper GI bleeding after atezolizumab(ATZ)+bevacizumab(BVZ)therapy for *** failed to detect the bleeding *** subtraction angiography revealed a gastric artery pseudoaneurysm and contrast extravasation from the inferior splenic artery and a branch of the left gastric *** hemostasis was achieved with *** HCC patients who have been treated with ATZ+BVZ should be followed for 3 to 6 mo to monitor for development of massive GI *** may require *** is an effective treatment.

关键词： Atezolizumab Bevacizumab Hepatocellular carcinoma Gastric artery pseudoaneurysm Gastrointestinal bleeding Case report

Experimental study on high power all-fiber laser

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Chinese Optics Letters 2010年第4期8卷 404-406页

作者：赵保银段开椋赵卫李成王屹山 State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences

A high power all-fiber laser is experimentally studied.A monolithic fiber laser system with only one stage of resonator cavity is constructed and 404-W continuous wave（CW） output power is *** opticalto -optical conversion efficiency is up to 64%.The laser central wavelength is at 1081 nm with the spectral full-width at half-maximum（FWHM） of 2 *** laser setup can work with excellent stability;in the long time of high power operation,no thermal distortions or damages are observed.

关键词： Conversion efficiency

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恒力周铣加工余量规划策略

大连理工大学学报 2008年第6期48卷 830-834页

作者：魏兆成王敏杰马日光大连理工大学精密与特种加工教育部重点实验室辽宁大连116024

针对周铣加工的载荷控制问题,提出了一种恒力余量规划策略.首先分析了周铣加工的切削力模型,确定了刀具的浸入包角为影响切削载荷最显著的因素.然后以加工过程中浸入包角恒定为原则规划加工的余量分布情况,并探讨了余量优化策略对传统... 详细信息

针对周铣加工的载荷控制问题,提出了一种恒力余量规划策略.首先分析了周铣加工的切削力模型,确定了刀具的浸入包角为影响切削载荷最显著的因素.然后以加工过程中浸入包角恒定为原则规划加工的余量分布情况,并探讨了余量优化策略对传统加工方法可能产生的影响.加工实验结果表明恒力余量规划方法对铣削载荷有很好的稳定作用.

关键词：余量规划恒定包角切削力高速铣削

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飞机机翼载荷校准试验的有限元仿真方法

系统仿真学报 2008年第23期20卷 6569-6571页

作者：杨全伟舒成辉赵华中国飞行试验研究院西安71089

飞机机翼载荷校准试验是飞机载荷验证试飞的关键工作之一,校准结果的精度及有效性主要取决于试验方案设计的合理性。为了对其开展仿真研究,研究了对机翼载荷校准试验进行有限元仿真的方法,实现了建立有限元仿真模型、设计"虚拟"应变电... 详细信息

飞机机翼载荷校准试验是飞机载荷验证试飞的关键工作之一,校准结果的精度及有效性主要取决于试验方案设计的合理性。为了对其开展仿真研究,研究了对机翼载荷校准试验进行有限元仿真的方法,实现了建立有限元仿真模型、设计"虚拟"应变电桥和施加"虚拟"校准载荷等关键技术。以此对某机翼载荷校准试验进行了仿真,将仿真结果和试验结果进行了对比,评价和分析了仿真结果。应用结果表明,方法具有令人满意的精度和可行性。

关键词：有限元法飞机机翼载荷校准试验试验仿真应变计飞行试验

Gastrin,somatostatin,G and D cells of gastric ulcer in rats

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World Journal of Gastroenterology 2002年第2期8卷 375-378页

作者： Feng-Peng Sun Yu-Gang Song wei cheng Tong zhao Yong-Li Yao,Department of Gastroenterology,Zhujiang Hospital,First Military Medical University,Guangzhou 510282,Guangdong Province,China Department of Gastroenterology Zhujiang Hospital First Military Medical University Guangzhou 510282 Guangdong Province China. sci@***

AIM: To investigate the relationship among gastrin, somatostatin, G and D cells in gastric ulcer and in its healing process in rats. METHODS: Fourty-nine Wistar rats were divided into 7 groups. The gastric ulcer model was induced by acetic acid successfully. The gastrin and the somatostatin in rat plasma, gastric fluid and antral tissue were measured by radioimmunoassay(RIA). G and D cells in antral mucosa were analyzed with polyclonal antibody of gastrin and somatostatin by immunohistochemical method and Quantimet 500 image analysis system. RESULTS: In gastric ulcer, the level of gastrin in plasma, gastric fluid, and antral tissue increased, that of somatostatin declined, and the disorder gradually recovered to the normal level in the healing process. Immunohistochemical technique of G and D cells in antral mucosa demonstrated that the number of G cells increased and that of D cells decreased, both areas of G and D cells declined, the ratio of number and area of G/D increased in gastric ulcer, and the disorder gradually recovered in the healing process. CONCLUSION: In gastric ulcer, the increased gastrin secreted by G cells, the declined somatostatin secreted by D cells, and the disordered G/D cell ratio can lead to gastrointestinal dysfunction.

关键词： Animals Disease Models, Animal Gastric Mucosa Gastrin-Secreting Cells Gastrins Male Rats Rats, Wistar Research Support, Non-U.S. Gov't Somatostatin Somatostatin-Secreting Cells Stomach Ulcer

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计算空间点到细分曲面有符号最近距离的方法

计算机集成制造系统 2013年第4期19卷 687-694页

作者：朱建宁王敏杰魏兆成曹斌大连理工大学机械工程学院辽宁大连116024

针对在海量细分曲面数据中计算空间点到细分曲面有符号最近距离效率较低的问题,创建一个新的细分曲面数据结构,实现细分曲面的分片表示,进而采用分治策略控制计算规模。利用细分曲面面片网格拓扑结构特性,结合多分辨率采样技术,以空间... 详细信息

针对在海量细分曲面数据中计算空间点到细分曲面有符号最近距离效率较低的问题,创建一个新的细分曲面数据结构,实现细分曲面的分片表示,进而采用分治策略控制计算规模。利用细分曲面面片网格拓扑结构特性,结合多分辨率采样技术,以空间点和细分曲面极限网格顶点的最近距离作为择优指标,在细分曲面面片中搜索距离空间点最近的顶点。以最近顶点的位置和法向建立参数直线方程,以此为基础,进行最近距离的误差分析和符号判断。结合局部细分技术,提高最近距离的计算精度。基于Catmull-Clark细分模式,通过实例验证了算法的可行性和有效性。与常规方法相比,该算法计算效率高、精度可控,算法原理适用于多种细分模式。

关键词：最近距离数据结构分治多分辨率采样 Catmull-Clark细分曲面

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快速计算平面与高精度细分曲面交线的方法

计算机集成制造系统 2014年第6期20卷 1322-1329页

作者：朱建宁王敏杰魏兆成曹斌大连理工大学机械工程学院辽宁大连116024

为解决平面与高精度细分曲面求交效率低和稳定性差的问题,根据细分曲面网格拓扑结构特性,提出平面与Catmull-Clark细分曲面求交的高效方法。基于细分曲面的分片表示,将平面与复杂细分曲面模型的求交问题转化为平面与形状简单的细分曲面... 详细信息

为解决平面与高精度细分曲面求交效率低和稳定性差的问题,根据细分曲面网格拓扑结构特性,提出平面与Catmull-Clark细分曲面求交的高效方法。基于细分曲面的分片表示,将平面与复杂细分曲面模型的求交问题转化为平面与形状简单的细分曲面面片的求交问题。分析了平面与细分曲面交线的特点,将交线的交点分为起始交点、后续交点和终止交点三种基本类型。根据细分曲面面片网格拓扑结构特性,提出细分曲面面片多级分割技术。在此基础上,结合包围盒干涉检测技术,判断平面与细分曲面面片的相交性并计算起始交点。针对细分曲面面片规则的拓扑结构,计算后续交点和判定终止交点。根据细分曲面面片之间的拓扑关系,将获得的若干无序交线段排序合并为完整的有序交线。通过实例进行了算法测试,测试结果表明该算法具有较高的性能。

关键词：平面与细分曲面求交数据结构分治多级分割 Catmull-Clark细分曲面

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污水除磷技术及影响因素的研究进展

应用化工 2022年第6期51卷 1811-1816,1824页

作者：车林轩程伟钊韦志鹏东华大学环境科学与工程学院上海201620 布鲁克大学加拿大安大略省L2S 3A1

综述了污水除磷领域近几年的代表性工艺,讨论了化学沉淀、生物法、吸附法、结晶法等除磷方法的机理、特点及研究现状。开发更经济有效的新材料,将不同的方法相结合,探究实际应用中的最佳参数和适用范围,最大限度地提高磷的去除率和回收... 详细信息

综述了污水除磷领域近几年的代表性工艺,讨论了化学沉淀、生物法、吸附法、结晶法等除磷方法的机理、特点及研究现状。开发更经济有效的新材料,将不同的方法相结合,探究实际应用中的最佳参数和适用范围,最大限度地提高磷的去除率和回收率,是本领域后续的研究重点。

关键词：污水除磷化学沉淀生物除磷吸附结晶磷回收

Preparation of FeCoNi medium entropy alloy from Fe^(3+)-Co^(2+)-Ni^(2+)solution system

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 92-101页

作者： Zongyou cheng Qing zhao Mengjie Tao Jijun Du Xingxi Huang chengjun Liu Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China Engineering Research Center of Frontier Technologies for Low-carbon Steelmaking(Ministry of Education) Shenyang 110819China

In recent years,medium entropy alloys have become a research hotspot due to their excellent physical and chemical *** controlling reasonable elemental composition and processing parameters,the medium entropy alloys can exhibit similar properties to high entropy alloys and have lower *** this paper,a FeCoNi medium entropy alloy precursor was prepared via sol-gel and coprecipitation methods,respectively,and FeCoNi medium entropy alloys were prepared by carbothermal and hydrogen *** phases and magnetic properties of FeCoNi medium entropy alloy were *** showed that FeCoNi medium entropy alloy was produced by carbothermal and hydrogen reduction at 1500℃.Some carbon was detected in the FeCoNi medium entropy alloy prepared by carbothermal *** alloy prepared by hydrogen reduction was uniform and showed a relatively high ***,the hydrogen reduction product exhibited better saturation magnetization and lower coercivity.

关键词： medium entropy alloy sol-gel co-precipitation carbothermal hydrogen reduction

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： zhao-Jun Zhang Wen-wei Wang Jing-Shui Zhen Bo-cheng Li De-cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model