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Endovascular treatment of ruptured lobulated anterior communicating artery aneurysms:A retrospective study of 24 patients

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World Journal of Clinical Cases 2024年第15期12卷 2529-2541页

作者： Sheng-Xuan Huang Xun-Ping Ai Ze-Hui Kang zhi-yong chen Ren-Man Li Zu-Chao Wu Feng Zhu Department of Neurosurgery Sanming First Hospital Affiliated to Fujian Medical UniversitySanming 365000Fujian ProvinceChina

BACKGROUND Lobulated intracranial aneurysm is a special type of aneurysm with at least one additional cyst in the neck or body of the *** intracranial aneurysm is a complex aneurysm with complex morphology and structure and weak tumor wall,which is an independent risk factor for rupture and *** aneurysms located in the anterior communicating artery complex account for 36.9%of all intracranial lobular *** to its special anatomical structure,both craniotomy and endovascular treatment are more *** with single-capsule aneurysms,craniotomy for lobular intracranial aneurysms has a higher risk and complication *** To investigate the efficacy and safety of endovascular treatment for ruptured lobulated anterior communicating artery aneurysm(ACoAA).METHODS Patients with ruptured lobulated ACoAA received endovascular treatment in Sanming First Hospital Affiliated to Fujian Medical University from June 2020 to June 2022 were retrospectively *** demographic,clinical and imaging characteristics,endovascular treatment methods and follow-up results were *** A total of 24 patients with ruptured lobulated ACoAA were included,including 9 males(37.5%)and 15 females(62.5%).Their age was 56.2±8.9 years old(range 39-74).The time from rupture to endovascular treatment was 10.9±12.5 *** maximum diameter of the aneurysms was 5.1±1.0 mm and neck width were 3.0±0.7 *** patients(79.2%)were double-lobed and 5(20.8%)were ***'s grade:Grade 2 in 16 cases(66.7%),grade 3 in 6 cases(25%),and grade 4 in 2 cases(8.3%).Hunt-Hess grade:Grade 0-2 in 5 cases(20.8%),grade 3-5 in 19 cases(79.2%).Glasgow Coma Scale score:9-12 in 14 cases(58.3%),13-15 in 10 cases(41.7%).Immediately postprocedural Raymond-Roy grade:grade 1 in 23 cases(95.8%),grade 2 in 1 case(4.2%).Raymond-Roy grade in imaging follow-up for 2 wk to 3 months:grade 1 in 23 cases(95.8%),grade 2 in 1 case(4.2%).Followup for 2 to 12 months sho

关键词： Intracranial aneurysm Anterior cerebral artery Endovascular surgery Embolism Treatment outcome

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含不同初始织构的Mg−Gd−Y−Zn−Zr合金热轧板材的显微组织和力学性能

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Transactions of Nonferrous Metals Society of China 2024年第6期34卷 1804-1816页

作者：陈汉胡璋韩宇翔陈韬刘楚明陈志永中南大学材料科学与工程学院长沙410083

通过光学显微镜、扫描电子显微镜、电子背散射衍射、透射电子显微镜和拉伸试验研究含不同初始织构的Mg−4.7Gd−3.4Y−1.2Zn−0.5Zr(质量分数,%)合金热轧板材的显微组织和力学性能。结果表明,初始织构为0001//RD(板材轧向)的板材获得相对较... 详细信息

通过光学显微镜、扫描电子显微镜、电子背散射衍射、透射电子显微镜和拉伸试验研究含不同初始织构的Mg−4.7Gd−3.4Y−1.2Zn−0.5Zr(质量分数,%)合金热轧板材的显微组织和力学性能。结果表明,初始织构为0001//RD(板材轧向)的板材获得相对较粗的晶粒和双峰基面织构;而初始织构为0001//TD(板材横向)的板材动态再结晶程度更高,因此,获得更细的晶粒尺寸和较强的0001//ND基面织构。此外,在两种板材中均发现沿RD拉长的不规则形状LPSO相,这种LPSO相导致各向异性的承载强化行为,并进一步引起板材的屈服各向异性。对强化机理的分析表明,晶界强化对轧制板材的强化效果最好。由于具有较小的晶粒尺寸和LPSO相带来的承载强化效果,初始织构为0001//TD的板材在RD方向上获得最高的屈服强度。

关键词： Mg−Gd−Y−Zn−Zr合金织构 LPSO相力学性能强化机理

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Distributed coordination in multi-agent systems： a graph Laplacian perspective

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Frontiers of Information Technology & Electronic Engineering 2015年第6期16卷 429-448页

作者： zhi-min HAN zhi-yun LIN Min-yue FU zhi-yong chen State Key Laboratory of Industrial Control Technology College of Electrical Engineering Zhejiang University Hangzhou 310027 China School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW 2308 Australia State Key Laboratory of Industrial Control Technology Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China

This paper reviews some main results and progress in distributed multi-agent coordination from a graph Laplacian perspective. Distributed multi-agent coordination has been a very active subject studied extensively by the systems and control community in last decades, including distributed consensus, formation control, sensor localization, distributed optimization, etc. The aim of this paper is to provide both a comprehensive survey of existing literature in distributed multi-agent coordination and a new perspective in terms of graph Laplacian to categorize the fundamental mechanisms for distributed coordination. For different types of graph Laplacians, we summarize their inherent coordination features and specific research issues. This paper also highlights several promising research directions along with some open problems that are deemed important for future study.

关键词： Multi-agent systems Distributed coordination Graph Laplacian

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Progress in Joining Ceramics to Metals

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Journal of Iron and Steel Research International 2006年第2期13卷 1-5页

作者： ZHANG yong FENG Di HE zhi-yong chen Xi-chun High Temperature Materials Research Institute Central Iron and Steel Research Institute Beijing 100081 China

The research and development of joining methods of ceramics to metals, especially brazing, diffusion bonding and partial transition liquid phase bonding, were introduced. Some opinions were put forward. For new composites emerging, it is necessary to develop new joining methods, particularly in the field of high temperature technique for joining ceramics to superalloys.

关键词： ceramic metal joining progress

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CAVITATION CHARACTERISTICS OF HIGH VELOCITY FLOW WITH AND WITHOUT AERATION ON THE ORDER OF 50m/s

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Journal of Hydrodynamics 2007年第4期19卷 429-433页

作者： DONG zhi-yong chen Lei JU Wen-jie School of Civil Engineering and Architecture Zhejiang University of Technology Hangzhou 310032 China

Experimental study of cavitation characteristics with and without aeration was conducted at the flow velocity 50m/s in the non-circulating type water tunnel in the Hydraulics Laboratory at Zhejiang University of Technology. Variations of pressure and cavitation number with air concentration, pressure waveforms as well as cavitation erosion level of concrete specimen with and without aeration were obtained. The effects of cavitation control by aeration were analyzed.

关键词： cavitation erosion aeration pressure change cavitation number the order of 50 m/s

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Hypercrosslinking Polymers Fabricated from Divinyl Benzene via Friedel-Crafts Addition Polymerization

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Chinese Journal of Polymer Science 2022年第3期40卷 310-320,I0008页

作者： Zheng-Yu Duan Yan-Yan Wang Qi-Wei Pan Yun-Feng Xie zhi-yong chen Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China Nutrition&Health Research Institute COFCO CorporationBeijing Key Laboratory of Nutrition&Health and Food SafetyBeijing 102209China

Microporous organic polymers with high surface area are widely used in many *** them,hypercrosslinked polymers have been extensively concerned because of their simple processes and low-cost ***,due to most state-of-the-art strategies for HCPs based on condensation reactions,the release of small molecules such as hydrochloric acid and methanol involved in such strategies brings about new hazards to ***,we propose a method of fabrication of hypercrosslinked polymers via self-addition polymerization of divinyl benzene and its crosslinking with polar aromatic *** hypercrosslinked polyDVB-based products are demonstrated by FriedelCrafts addition reaction of double bonds on DVB that can connect adjacent phenyl rings of aromatic molecules to form the crosslinked *** HCPDVB-CB obtained in 1-chlorobutane as solvent has a high micropore content and displays high surface area up to 931 m^(2)/*** this finding,DVB is used as a novel external crosslinker for knitting polar aromatic *** L-phenylalanine and bisphenol A are used as the aromatic units,the obtained HCP(Phe-DVB)and HCP(BPA-DVB)could reach surface area of 612 and 471 m^(2)/g,and have hydrogen uptake of0.62 wt%and 0.58 wt%at 77 K and 1.13 bar by comparison with HCPDVB-CB having hydrogen uptake of 0.30 wt%,respectively.

关键词： Hypercrosslinked polymers Divinyl benzene Friedel-Crafts alkylation Microporous organic polymers Gas storage

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Catalytical oxidation of styrene by molecularly imprinted polymer with phenylacetic acid as template and hemin as co-monomer

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Chinese Chemical Letters 2007年第8期18卷 981-984页

作者： Jun Wang zhi yong chen Mei Ping Zhao Yuan Zong Li The Key Laboratory of Bioorganic Chemistry and Molecular Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

This letter used the molecular imprinting technology to build up the microenvironment around co-monomer bemin to mimic the cytochrome P450 catalyzing the epoxidation of styrene. The results showed that the conversion rates of products were obviously enhanced by molecularly imprinted polymers, compared to free heroin solution, using three kinds of oxidants. The used axial ligand in polymers synthesis also improved the total conversion rates.

关键词： Molecularly imprinted polymers Enzyme mimic Cytochrome P450 Styrene Epoxidation

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The first facile total synthesis of natural (3R,4R,6S)-3,4-epoxybisabola-7(14),10-dien-2-one

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Chinese Chemical Letters 2009年第9期20卷 1017-1018页

作者： zhi yong Tang chen Xi Zhang Li Jing Fang Yu Lin Li State Key Laboratory of Applied Organic Chemistry and Institute of Organic Chemistry Lanzhou University Lanzhou 730000 China

3,4-Epoxybisabola-7（14）,10-dien-2-one, a natural sesquiterpoind, was first synthesized from （-）-carvone through 7 steps, in an overall yield of 35.9%. The key step was the allylation and then a substrate-directable epoxidation was committed successfully. 2009 zhi yong Tang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Alkylation Epoxidation Synthesis

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Molecular imprinting of protein by coordinate interaction

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Chinese Chemical Letters 2009年第6期20卷 747-750页

作者： Jun Wang Zhen Dong Hua zhi yong chen Yuan Zong Li Mei Ping Zhao The Key Laboratory of Bioorganic Chemistry and Molecular Engineering College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

In this article, a novel strong interaction by forming complex between bovine serum albumin （BSA） and copper ion was utilized for the preparation of molecular imprinted bydrogel in aqueous solution. Results show that the inclusion of copper ion in preparation can bridge the template BSA and functional monomers together and improve the imprinting effect compared to the polymer made without copper ion added. High selectivity factor and large adsorption capacity are also observed for the obtained BSA-imprinted hydrogel.

关键词： Molecular imprinted hydrogel Bovine serum albumin Copper ion

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Seismic damage zone and width-throw scaling along the strike-slip faults in the Ordovician carbonates in the Tarim Basin

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Petroleum Science 2019年第4期16卷 752-762页

作者： De-Bo Ma Guang-Hui Wu Nicola Scarselli Xin-Sheng Luo Jian-Fa Han zhi-yong chen School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing 100083China Fault Dynamics Research Group Department of Earth SciencesRoyal Holloway University of LondonEgham TW20 0EXUK PetroChina Tarim Oilfield Company Korla 841000XinjiangChina

Understanding the scaling relation of damage zone width with displacement of faults is important for predicting subsurface faulting mechanisms and fluid flow processes. The understanding of this scaling relationship is influenced by the accuracy of the methods and types of data utilized to investigate faults. In this study, seismic reflection data are used to investigate the throw and damage zone width of five strike-slip faults a ecting Ordovician carbonates of the Tarim intracraton basin,NW China. The results indicate that fault slips with a throw less than 200 m had formed wide damage zones up to 3000 m in width. Also, damage zone width is found to have both a positive correlation and a power-law relation with throw of two orders of magnitude, with a ratio of these values varying in a range of 2–15. The relationship between throw and damage zone width is not a simple power-law and changes its slope from small to larger size faults. The results indicate that throw scales well with damage zone width for the studied faults, and hence these can be used to predict fault geometries in the Tarim Basin. The study of the wide carbonate damage zones presented here provides new insights into scaling of large-size faults, which involve multiple faulting stages.

关键词： Fault damage zone Carbonate Throw Scaling Evolution Tarim Basin

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