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SnS_(2) nanosheets decorated SnO_(2) hollow multishelled nanostructures for enhanced sensing of triethylamine gas

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Rare Metals 2024年第5期43卷 2339-2348页

作者： Wen-Di Liu Ya xiong ao Shen Xin-Zhen Wang Xiao Chang Wen-Bo Lu Jian Tian School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China College of Physics Qingdao UniversityQingdao 266071China Zernike Institute for Advanced Materials University of Groningen9747 AG GroningenThe Netherlands

Highly sensitive,fast and low-temperature detection of triethylamine(TEA)gas based on SnO_(2) is attractive yet remains ***,SnS_(2) nanosheets(NSs)/SnO_(2) hollow multishelled structures(HoMSs)-based sensors are designed by the synthesis of SnO_(2) HoMSs,followed by in situ sulfuration with *** varying the thioacetamide levels,Sn S_(2)/SnO_(2) heterostructures with different SnS_(2) contents were obtained and their TEA gas sensing performances were investigated.

关键词： SnS attractive sheets

Effect of slow shot speed on externally solidified crystal,porosity and tensile property in a newly developed high-pressure die-cast Al-Si alloy

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China Foundry 2024年第1期21卷 11-19页

作者： Wen-ning Liu Wei Zhang Peng-yue Wang Yi-xian Liu Xiang-yi Jiao ao-xiang Wan Cheng-gang Wang Guo-dong Tong Shou-mei xiong School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Tsinghua UniversityBeijing 100084Beijing China FAW Group Co. Ltd.Changchun 130013China China FAW Foundry Co. Ltd.Changchun 130013China

The effect of slow shot speed on externally solidified crystal(ESC),porosity and tensile property in a newly developed high-pressure die-cast Al-Si alloy was investigated by optical microscopy(OM),scanning electron microscopy(SEM)and laboratory computed tomography(CT).Results showed that the newly developed AlSi9MnMoV alloy exhibited improved mechanical properties when compared to the AlSi10MnMg *** AlSi9MnMoV alloy,which was designed with trace multicomponent additions,displays a notable grain refining effect in comparison to the AlSi10MnMg *** elements Ti,Zr,V,Nb,B promote heterogeneous nucleation and reduce the grain size of primaryα-*** a lower slow shot speed,the large ESCs are easier to form and gather,developing into the dendrite net and *** an increase in slow shot speed,the size and number of ESCs and porosities significantly *** addition,the distribution of ESCs is more dispersed and the net-shrinkage *** tensile property is greatly improved by adopting a higher slow shot *** ultimate tensile strength is enhanced from 260.31 MPa to 290.31 MPa(increased by 11.52%),and the elongation is enhanced from 3.72%to 6.34%(increased by 70.52%).

关键词： hypoeutectic Al-Si alloy high pressure die casting porosity externally solidified crystal tensile property

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基于路径对抗的确定性谣言干预问题研究

系统工程理论与实践 2023年第9期43卷 2739-2748页

作者：熊澳翁克瑞郭海湘沈卉中国地质大学(武汉)经济管理学院武汉430074

近年来,各大互联网平台出现了多起由网络水军发酵的虚假信息传播事件.利用网络扩散,制造话题形成社会热点,造成谣言的广泛传播,对网络舆情管控产生了巨大挑战.本文站在舆情管控的角度,研究如何运用真实信息的传播干预谣言扩散.建立了基... 详细信息

近年来,各大互联网平台出现了多起由网络水军发酵的虚假信息传播事件.利用网络扩散,制造话题形成社会热点,造成谣言的广泛传播,对网络舆情管控产生了巨大挑战.本文站在舆情管控的角度,研究如何运用真实信息的传播干预谣言扩散.建立了基于竞争扩散的谣言传播干预模型,提出基于路径对抗的谣言干预算法,提供了对社交网络舆情精准管控的有效方法.实验结果显示该算法阻击质量更优、时间效率更高:目标函数值接近商业求解器,计算时间比求解器节约了87.07%;对比其他算法有更好的谣言抑制效果,且在大规模网络中能够快速求解真相种子,具有较强的可扩展性.

关键词：社会网络谣言干预竞争扩散信息传播

Fabrication of a bio-instructive scaffold conferred with a favorable microenvironment allowing for superior implant osseointegration and accelerated in situ vascularized bone regeneration via type H vessel formation

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Bioactive Materials 2022年第3期7卷 491-507页

作者： Yijun He Wenhao Wang Shaozhang Lin Yixi Yang Lizhi Song Yihan Jing Lihao Chen Zaopeng He Wei Li ao xiong Kelvin W.K.Yeung Qi Zhao Yuan Jiang Zijie Li Guoxian Pei Zhi-Yong Zhang Translational Research Centre of Regenerative Medicine and 3D Printing of Guangzhou Medical University Guangdong Province Engineering Research Center for Biomedical EngineeringState Key Laboratory of Respiratory DiseaseThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150PR China Hand and Foot Surgery&Plastic Surgery Affiliated Shunde Hospital of Guangzhou Medical UniversityFoshan528315PR China Department of Bone&Joint Surgery Peking University Shenzhen HospitalShenzhen518036PR China National&Local Joint Engineering Research Center of Orthopaedic Biomaterials Peking University Shenzhen HospitalShenzhen518036PR China Department of Orthopaedics and Traumatology The University of Hong KongPokfulamHong Kong999077PR China Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma The University of Hong Kong Shenzhen HospitalShenzhen518053PR China The Third Affiliated Hospital of Southern University of Science and Technology Southern University of Science and TechnologyShenzhen518055PR China Department of Orthopaedic Surgery The Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150PR China Medical Technology and Related Equipment Research for Spinal Injury Treatment City Key LaboratoryThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou510150PR China

The potential translation of bio-inert polymer scaffolds as bone substitutes is limited by the lack of neovascularization upon implantation and subsequently diminished ingrowth of host bone,most likely resulted from the inability to replicate appropriate endogenous crosstalk between *** umbilical vein endothelial cell-derived decellularized extracellular matrix(HdECM),which contains a collection of angiocrine biomolecules,has recently been demonstrated to mediate endothelial cells(ECs)-osteoprogenitors(OPs)*** employed the HdECM to create a PCL(polycaprolactone)/fibrin/HdECM(PFE)hybrid *** hypothesized PFE scaffold could reconstitute a bio-instructive microenvironment that reintroduces the crosstalk,resulting in vascularized bone *** implantation in a rat femoral bone defect,the PFE scaffold demonstrated early vascular infiltration and enhanced bone regeneration by microangiography(μ-AG)and micro-computational tomography(μ-CT).Based on the immunofluorescence studies,PFE mediated the endogenous angiogenesis and osteogenesis with a substantial number of type H vessels and *** addition,superior osseointegration was observed by a direct host bone-PCL interface,which was likely attributed to the formation of type H *** bio-instructive microenvironment created by our innovative PFE scaffold made possible superior osseointegration and type H vessel-related bone *** could become an alternative solution of improving the osseointegration of bone substitutes with the help of induced type H vessels,which could compensate for the inherent biological inertness of synthetic polymers.

关键词： Cell-derived decellularized extracellular matrix Microenvironment Vascularized bone regeneration Type H vessels Osseointegration

基于区块链的计算与无线通信资源联合管理双向拍卖模型

维普期刊数据库评论

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维普期刊数据库

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通信学报 2022年第11期43卷 14-25页

作者：孙俨熊翱蒋承伶王威于东晓郭少勇北京邮电大学网络与交换技术国家重点实验室北京100876 国网江苏省电力有限公司江苏南京210000 南京航空航天大学电子信息工程学院江苏南京211100 山东大学计算机科学与技术学院山东青岛266237

无线通信网络中,边缘侧的频谱、计算、存储等资源存量受限,传统分散、独占式资源分配造成资源复用能力弱且利用率低下。同时,在传统资源调度过程中由于归属方的主体间信任缺失,难以保障资源共享的公平性。首先提出了基于区块链的计算与... 详细信息

无线通信网络中,边缘侧的频谱、计算、存储等资源存量受限,传统分散、独占式资源分配造成资源复用能力弱且利用率低下。同时,在传统资源调度过程中由于归属方的主体间信任缺失,难以保障资源共享的公平性。首先提出了基于区块链的计算与无线通信资源联合管理双向拍卖模型,在模型中建立了一个资源市场,资源买方与卖方通过双向拍卖的方式进行资源分配;其次采用区块链存储各买家与卖家的资源信息,解决网络中各方的互信问题;最后进行实验仿真,验证所提模型有效提升了系统性能与资源利用效率。

关键词：边缘计算资源分配市场模型双向拍卖区块链

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基于容错机制高可靠性网管系统的研究

北京邮电大学学报 2006年第2期29卷 94-97页

作者：熊翱孟洛明北京邮电大学计算机科学与技术学院北京100876

从容错的角度,分析了网管系统在可靠性方面存在的主要问题.针对这些问题,提出了实现高可靠性网管系统的若干种容错方法,包括数据容错、主机容错、网络容错和软件容错,并对这些方法的实现代价进行了比较和分析,指出了各种方法的优缺点和... 详细信息

从容错的角度,分析了网管系统在可靠性方面存在的主要问题.针对这些问题,提出了实现高可靠性网管系统的若干种容错方法,包括数据容错、主机容错、网络容错和软件容错,并对这些方法的实现代价进行了比较和分析,指出了各种方法的优缺点和可用性.

关键词：高可靠性容错机制网管系统

Endoscopic decompression of the optic canal for traumatic optic neuropathy

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Chinese Journal of Traumatology 2016年第6期19卷 330-332页

作者： Zhen-Hua He Zheng-Bo Lan ao xiong Guo-Kuo Hou Ya-Wen Pan Qiang Li Xin-Ding Zhang Institute of Neurology Department of Neurasurgery Lanzhou University Second Hospital Lanzhou 730030 China Basic Medical College of Zhengzhou University Zhengzhou 450001 China

OBJECTIVE:Traumatic optic neuropathy (TON) is a serious complication of head trauma with the incidence rate of 0.5%-5%. The aim of this study was to investigate the therapeutic efficacy of endoscopic decompression of the optic canal for optic nerve injuries.;METHODS:In this study, 11 patients treated in our hospital from January 2009 to January 2015 with the visual loss resulting from TON were retrospectively reviewed for preoperative vision, visual evoked potential (VEP) scan, surgical approach, postoperative visual acuity, complications, and follow-up results.;RESULTS:All these patients received endoscopic decompression of the optic canal. At the 3-month follow- up, the visual acuity improvement rate of the 11 patients was 45.5%. The vision acuity of 2 cases improved from hand movement to 0.08 and 0.3 after operation. Another patient's vision acuity returned to 0.05 compared to light sensation preoperatively. Two cases had finger counting before surgery but they had a vision acuity of 0.4 and light sensation respectively after surgery. However, the other 6 cases' vision did not improve after surgery.;CONCLUSIONS:Endoscopic decompression of the optic canal is an effective way to cure TON. VEP could be used as an important reference for preoperative and prognosis evaluation. Operative time after trauma is only a relative condition that may affect the therapeutic effect of optic canal decompression. Poor results of this procedure may be related to the severity of the optic nerve injury.

关键词：视神经损伤神经管外伤性内窥镜减压治疗病变视觉诱发电位

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基于改进型蚁群系统的多约束电路路由算法

计算机工程 2008年第11期34卷 183-185页

作者：熊翱北京邮电大学网络与交换技术国家重点实验室北京100876

分析现有路由算法的缺点,对蚁群系统工作模型和传送网多约束电路路由选择原则进行描述,指出传统蚁群系统在解决多约束路由选择问题中的不足,改进了传统蚁群系统。阐述采用改进后的蚁群系统的多约束电路路由选择算法过程,用实例验证了算... 详细信息

分析现有路由算法的缺点,对蚁群系统工作模型和传送网多约束电路路由选择原则进行描述,指出传统蚁群系统在解决多约束路由选择问题中的不足,改进了传统蚁群系统。阐述采用改进后的蚁群系统的多约束电路路由选择算法过程,用实例验证了算法的有效性。

关键词：蚊群系统路由算法传送网

Study on the impact of comprehensive geriatric assessment on anxiety and depression in chronic obstructive pulmonary disease patients

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World Journal of Clinical Cases 2024年第20期12卷 4057-4064页

作者： Xian-Rong Shi Wen-Li Wu Chun-Yan Li Jiao ao Hai-Xia xiong Jing Guo Yan Fang Department of Nursing The First People’s Hospital of Jiangxia DistrictWuhan 430000Hubei ProvinceChina Respiratory and Critical Care Medicine The First People’s Hospital of Jiangxia DistrictWuhan 430000Hubei ProvinceChina Department of Intensive Care Medicine The First People’s Hospital of Jiangxia DistrictWuhan 430000Hubei ProvinceChina

BACKGROUND Psychological factors such as anxiety and depression will not only aggravate the symptoms of chronic obstructive pulmonary disease(COPD)patients and reduce the quality of life of patients,but also affect the treatment effect and long-term ***,it is of great significance to explore the clinical application of senile comprehensive assessment in the treatment of COPD and its influence on psychological factors such as anxiety and *** To explore the clinical application of comprehensive geriatric assessment in COPD care and its impact on anxiety and depression in elderly *** In this retrospective study,60 patients with COPD who were hospitalized in our hospital from 2019 to 2020 were randomly divided into two groups with 30 patients in each *** control group was given routine nursing,and the observation group was given comprehensive *** symptoms,quality of life[COPD assessment test(CAT)score],anxiety and depression Hamilton Anxiety Rating Scale(HAMA)and Hamilton Depression Rating Scale(HAMD)were compared between the two *** CAT scores in the observation group decreased from an average of 24.5 points at admission to an average of 18.3 points at discharge,and in the control group from an average of 24.7 points at admission to an average of 18.3 points at *** average score was 22.1(P<0.05).In the observation group,HAMA scores decreased from 14.2 points at admission to 8.6 points at discharge,and HAMD scores decreased from 13.8 points at admission to 7.4 points at *** mean HAMD scores in the control group decreased from an average of 14.5 at admission to an average of 12.3 at discharge,and from an average of 14.1 at admission to an average of 11.8 at *** The application of comprehensive geriatric assessment in COPD care has a significant effect on improving patients'clinical symptoms and quality of life,and can effectively reduce patients'anxiety and depres

关键词： Chronic obstructive pulmonary disease Comprehensive geriatric assessment Anxiety Depression Retrospective study Hamilton Anxiety Rating Scale