检索结果-南通市图书馆

Impairments in brain perfusion,executive control network,topological characteristics,and neurocognition in adult patients with asymptomatic Moyamoya disease

Impairments in brain perfusion,executive control network,top...

引用

第十六届中国医师协会神经外科医师年会

作者： shihao he Ziqi Liu Yanchang Wei Ran Duan Zongsheng Xu Cai Zhang Tian Li Ning Ma Xin Lou Xiaoyuan Liu Rong Wang Beijing Tiantan Hospital Capital Medical University Department of Neurosurgery Peking University International Hospital State Key Laboratory of Cognitive Neuroscience and Learning & IDG/Mc Govern Institute for Brain Research Beijing Normal University Department of Radiology Chinese PLA General Hospital Center of Stroke Beijing Institute for Brain Disorders

Background:Asymptomatic Moyamoya disease(MMD) impairs hemodynamic and cognitive *** relationship between these changes,cerebral blood flow(CBF),and network connectivity remains largely *** aim of this study was to increase understanding of the relationship between CBF,functional networks,and neurocognition in adults with asymptomatic *** compared CBF and functional status in 26 patients with MMD and 20 healthy controls using arterial spin labeling and resting state functional magnetic resonance imaging *** the same time,a detailed cognitive test was performed in 15 patients with no cerebral or lumen infarction who were selected by magnetic resonance imaging-T2 FLAIR ***:Compared to the controls,the patients showed varying degrees of decline in their computational ability(simple subtraction,p=0.009;complex subtraction,p=0.006) and short-term memory(p=0.042).The asymptomatic MMD group also showed decreased CBF in the left anterior central and left inferior frontal gyri of the island flap with multiple node abnormalities in the brain network and reduced network *** was a significant association of these changes with cognitive decline in the MMD ***:In patients with asymptomatic MMD,disturbance of CBF and impaired brain network connections may be important causes of cognitive decline and appear before clinical symptoms.

关键词： Moyamoya disease brain perfusion neurocognition asymptomatic cerebral blood flow functional magnetic resonance imaging brain network

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Design and experiment of a picking robot for Agaricus bisporus based on machine vision

引用

International Journal of Agricultural and Biological Engineering 2024年第4期17卷 67-76页

作者： Jiangtao Ji Shucan Du Mengsong Li Xuefeng Zhu Kaixuan Zhao shihao Zhang Xiang Ji College of Agricultural Equipment Engineering Henan University of Science and TechnologyLuoyang 471003HenanChina Science&Technology Innovation Center for Completed Set Equipment Longmen LaboratoryLuoyang 471023HenanChina

Harvesting represents the crucial stage in the cultivation process of Agaricus bisporus *** important way for the production process of Agaricus bisporus to reduce costs and increase income is to ensure timely harvest of Agaricus bisporus,reduce harvesting costs,and improve harvesting *** are many disadvantages in manual picking,such as high labor intensity,time-consuming work and high *** this study,a set of mushroom picking platform including climbing mechanism,picking robot,and control system was designed and *** picking robot consisted of a truss mechanism,an image acquisition device,a mushroom collection device,and a picking *** profile picking actuator could realize the function of constant force *** online size detection algorithm for Agaricus bisporus based on deep image processing was *** algorithm included removal of abnormal noise points,background segmentation,coordinate conversion,and diameter *** precision picking system for Agaricus bisporus with coordinate compensation function controlled by Industrial Personal Computer was designed,and the visual control interface was developed based on *** the performance test,the reliability of machine vision recognition and the overall operating stability of the picking platform were *** test results showed that in the process of machine vision recognition,the recognition accuracy rate was higher than 92.50%,the missed detection rate was lower than 4.95%,the false detection rate was lower than 2.15%,and the diameter measurement error was less than 4.50%.The image processing algorithm had high recognition rate and small diameter measurement error,which could meet the requirements of picking *** picking platform’s picking success rate was higher than 95.45%,the picking damage rate was lower than 3.57%,and the picking output rate was higher than 87.09%.Compared with manual picking,the recognition accuracy rate of t

关键词： Agaricus bisporus picking platform machine vision robot

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ultrastable in-situ silver nanoparticle dressing for effective prevention and treatment of wound infection in emergency

引用

Engineered Regeneration 2024年第1期5卷 111-123页

作者： Wei Wang Ziwei Hu Wanying Mo Min Ouyang shihao Lin Xiang Li Chengxinqiao Wang Feng Yu Yupeng Wang Dongfang Zhou Key Laboratory of Mental health of the Ministry of Education NMPA Key Laboratory for Research and Evaluation of Drug Metabolism&Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou 510515China Institute of Otolaryngology head and neck surgery Guangzhou Red Croee Hospital of Jinan UniversityGuangzhou 510282China c Department of Orthopaedics and Traumatology Zhujiang HospitalSouthern Medical UniversityGuangzhou 510282China

The use of antibacterial dressings is crucial in the prevention and treatment of wound infection in emergency ***,the efficacy of dressings is compromised by long-term storage or exposure to harsh ***,an ultrastable in-situ silver nanoparticle dressing(AgSNP@CD)was prepared for effective prevention and treatment of wound infection in *** fabrication process of AgSNP@CD is simple,suitable for large-scale *** to the strong interaction between the in-situ synthesized AgNPs and the cotton fabric,AgSNP@CD owned remarkable stability,thus retaining its antimicrobial efficacy even after long-term storage(up to 2 years)and under extreme conditions(damp heat,low temperatures,low-oxygen,water immersion,acid-alkali erosion).Both in vitro and in vivo results demonstrated the extraordinary antibacterial efficacy and stability of AgSNP@CD,facilitating infection prevention and wound healing in extreme *** particular,AgSNP@CD exhibited a superior treatment effect on severe bacteria-infected trauma and can prevent the occur-rence of sepsis *** exceptional stability and antibacterial efficacy of AgSNP@CD under complex and extreme conditions make it a well-suited dressing strategy for the prevention and treatment of wound infection in emergency.

关键词： Bacteria-infected wounds Silver nanoparticle dressing Ultra stability Infection prevention In emergency

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A multifunctional flexible sensor based on PI-MXene/SrTiO_(3) hybrid aerogel for tactile perception

引用

The Innovation 2024年第3期5卷 44-54页

作者： shihao Deng Yue Li Shengzhao Li Shen Yuan Hao Zhu Ju Bai Jingyi Xu Lu Peng Tie Li Ting Zhang Nano Science and Technology Institute University of Science and Technology of China(USTC)Suzhou 215123China i-lab Nano-X Vacuum Interconnected WorkstationKey Laboratory of Multifunctional Nanomaterials and Smart SystemsSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China School of Nano-Tech and Nano-Bionics University of Science and Technology of China(USTC)Hefei 230026China Jiangxi Institute of Nanotechnology 278 Luozhu RoadXiaolan Economic and Technological Development ZoneNanchang 330200China

The inadequacy of tactile perception systems in humanoid robotic manipulators limits the breadth of available robotic ***,we designed a multifunctional flexible tactile sensor for robotic fingers that provides capabilities similar to those of human skin sensing *** sensor utilizes a novel PI-MXene/SrTiO_(3) hybrid aerogel developed as a sensing unit with the additional abilities of electromagnetic transmission and thermal insulation to adapt to certain complex ***,polyimide(PI)provides a high-strength skeleton,MXene realizes a pressure-sensing function,and MXene/SrTiO_(3) achieves both thermoelectric and infrared radiation response ***,via the pressure response mechanism and unsteady-state heat transfer,these aerogel-derived flexible sensors realize multimodal sensing and recognition capabilities with minimal *** can differentiate among 13 types of hardness and four types of material from objects with accuracies of 94%and 85%,respectively,using a decision tree *** addition,based on the infrared radiation-sensing function,a sensory array was assembled,and different shapes of objects were successfully *** findings demonstrate that this PI-MXene/SrTiO_(3) aerogel provides a new concept for expanding the multifunctionality of flexible sensors such that the manipulator can more closely reach the tactile level of the human *** advancement reduces the difficulty of integrating humanoid robots and provides a new breadth of application scenarios for their possibility.

关键词： utilize integrating insulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

红外双波段自适应伪装装置研究

引用

红外技术 2017年第9期39卷 855-858页

作者：何士浩刘剑张俊举曾萌南京理工大学电子工程与光电技术学院江苏南京210094 无锡市星迪仪器有限公司江苏无锡214000

对红外双波段自适应伪装装置的实现方案进行了理论分析,并详细介绍了装置的组成、设计方案和硬件设计,通过实验验证了装置的自适应伪装效果。装置可以在近红外和远红外双波段内实现自适应伪装,对自适应伪装装置的研发有一定的参考价值。

关键词：近红外远红外双波段自适应伪装

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

手术治疗OSAS合并咽喉反流患者的疗效观察

引用

外科研究与新技术 2021年第2期10卷 121-124页

作者：陈川何仕浩河源市源城区人民医院耳鼻喉科广东河源517000

目的探讨阻塞性睡眠呼吸暂停(obstructive sleep apnoea syndrome,OSAS)伴咽喉反流(laryngopharyngeal reflux,LPR)患者采用手术治疗的临床效果。方法共计纳入OSA伴LPR患者56例,病例采集时间在2017年6月-2019年12月,所有患者均采用手术治疗,观察患者的治疗效果。结果经统计56例患者术前临床症状中声嘶8.93%、清嗓10.71%、痰多或涕后流14.29%、吞咽困难7.14%、饭后躺下时咳嗽12.50%、呼吸困难或窒息发作8.93%、慢性咳嗽17.86%、咽异物感12.50%、反酸烧心7.14%;相关临床体征中假声带沟16.07%、喉室消失16.07%、喉水肿21.43%、红斑或充血17.86%、肉芽肿8.93%、后联合增生10.71%、声带水肿8.93%。手术后呼吸暂停低通气指数(apnea hypopnea index,AHI)水平低于手术前,血氧饱和度(oxygen saturation,简称SaO2)水平高于手术前,患者治疗总有效率为92.86%;对比56例患者反流症状指数量表(reflux symptom index,RSI)显示手术后各项反流症状评分均低于手术前,对比差异显著(P0.05),但其余几项反流体征对比差异显著(P<0.05)。结论对于OSAS伴LRP患者采用手术治疗方式可以有效缓解患者气道狭窄阻塞现象,改善患者的反流情况,临床应用效果显著。

关键词：阻塞性睡眠呼吸暂停咽喉反流呼吸暂停低通气指数低温离子辅助下改良悬雍垂腭咽形成术反流体征

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

结核性骶髂关节炎临床表现及影像学特点

引用

郑州大学学报（医学版） 2022年第3期57卷 432-435页

作者：贺玉杰丁艳霞乔博贺世豪李天方刘升云郑州大学第一附属医院风湿免疫科郑州450052 河南省胸科医院感染防控科郑州450008

目的:探讨结核性骶髂关节炎的临床表现及影像学特点,以期辅助临床诊疗。方法:回顾性分析2015年9月至2020年1月郑州大学第一附属医院及河南省胸科医院收治的36例结核性骶髂关节炎患者的一般资料、临床表现、合并疾病、实验室检查、影像... 详细信息

目的:探讨结核性骶髂关节炎的临床表现及影像学特点,以期辅助临床诊疗。方法:回顾性分析2015年9月至2020年1月郑州大学第一附属医院及河南省胸科医院收治的36例结核性骶髂关节炎患者的一般资料、临床表现、合并疾病、实验室检查、影像学表现、治疗及预后等资料。结果:36例中,男11例,女25例,发病年龄中位数(四分位数)32.0(23.0,50.5)岁。30例出现腰骶部、髋部或臀区疼痛,且以单侧疼痛为主。23例伴发热,4例伴乏力、消瘦或盗汗。34例检测T-SPOT,其中阳性27例。28例行骨盆DR或骶髂关节CT检查,其中关节面毛糙18例,关节间隙变窄或增宽10例,骨质破坏6例;17例行骶髂关节MRI平扫,均可见骶髂关节骨髓水肿,11例伴周围软组织受累。1例失访;其余35例均接受规范抗结核药物治疗,疗程12~18个月,其中9例同时接受外科手术治疗,均临床治愈。结论:结核性骶髂关节炎常单侧受累,部分可伴脓肿形成,经规范抗结核药物治疗或联合手术治疗,整体预后良好。

关键词：结核性骶髂关节炎临床表现影像学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

液体射流及其破碎特性研究进展

引用

重庆理工大学学报（自然科学） 2022年第6期36卷 240-246页

作者：邱发成张昊贺世豪李文生全学军重庆理工大学化学化工学院重庆400054

液体的射流破碎及雾化是一个复杂的非线性动力学演变过程。随着相关研究成果在生活上、工程上的实际应用,研究学者结合实验测量、数值模拟仿真等手段,对其进行了大量的探索。结合国内外研究现状,介绍了射流破碎的3种方式,即自由射流、... 详细信息

液体的射流破碎及雾化是一个复杂的非线性动力学演变过程。随着相关研究成果在生活上、工程上的实际应用,研究学者结合实验测量、数值模拟仿真等手段,对其进行了大量的探索。结合国内外研究现状,介绍了射流破碎的3种方式,即自由射流、气流中的射流雾化及射流撞击雾化。总结了破碎雾化的发生机制,并概括了在各种环境下,喷嘴结构、气流条件以及撞击情况等众多因素对其破碎模式、液滴分布、液滴尺寸等方面的影响。对于现阶段的相关研究进行了总结与展望,可为射流破碎相关研究提供思路。

关键词：液体射流破碎机制横向气流撞击雾化

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Beamforming Design for IRS-and-UAV-Aided Two-Way Amplify-and-Forward Relay Networks in Maritime IoT

引用

China Communications 2024年第8期21卷 45-61页

作者： Wang Xuehui Shu Feng Wu Yuanyuan Shi Weiping Yan shihao Zhao Yifan Cheng Qiankun Sun Zhongwen Wang Jiangzhou School of Information and Communication Engineering Hainan UniversityHaikou 570228China Collaborative Innovation Center of Information Technology Hainan UniversityHaikou 570228China School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094China School of Network and Communication Nanjing Vocational College of Information TechnologyNanjing 210023China School of Science and Security Research Institute Edith Cowan UniversityPerthWA 6027Australia School of Engineering University of KentCanterbury CT27NTU.K

In this paper,an intelligent reflecting surface(IRS)-and-unmanned aerial vehicle(UAV)-assisted two-way amplify-and-forward(AF)relay network in maritime Internet of Things(IoT)is proposed,where ship1(S1)and ship2(S2)can be viewed as data collecting *** enhance the message exchange rate between S1 and S2,a problem of maximizing minimum rate is cast,where the variables,namely AF relay beamforming matrix and IRS phase shifts of two time slots,need to be *** achieve a maximum rate,a low-complexity alternately iterative(AI)scheme based on zero forcing and successive convex approximation(LC-ZF-SCA)algorithm is *** obtain a significant rate enhancement,a high-performance AI method based on one step,semidefinite programming and penalty SCA(ONSSDP-PSCA)is *** results show that by the proposed LC-ZF-SCA and ONS-SDP-PSCA methods,the rate of the IRS-and-UAV-assisted AF relay network surpass those of with random phase and only AF relay ***,ONS-SDP-PSCA perform better than LC-ZF-SCA in aspect of rate.

关键词： beamforming maritime Internet of Things phase shift rate performance two-way amplify-and-forward relay unmanned aerial vehicle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

射流闪蒸研究进展及其应用

引用

重庆理工大学学报（自然科学） 2022年第3期36卷 207-214页

作者：邱发成贺世豪熊沛李文生全学军重庆理工大学化学化工学院重庆400054

射流闪蒸具有结合射流破碎过程中多变的气液交界面与闪蒸耦合强化传热传质的优点,有较好的应用价值。根据射流闪蒸耦合强化特点,首先从射流与闪蒸角度出发,分别介绍射流破碎与闪蒸的基本原理及相关研究进展;随后,基于射流闪蒸的应用领... 详细信息

射流闪蒸具有结合射流破碎过程中多变的气液交界面与闪蒸耦合强化传热传质的优点,有较好的应用价值。根据射流闪蒸耦合强化特点,首先从射流与闪蒸角度出发,分别介绍射流破碎与闪蒸的基本原理及相关研究进展;随后,基于射流闪蒸的应用领域研究,重点介绍射流闪蒸技术在脱盐工艺、换热冷却、微纳米反应、燃料预混等的应用;最后,从射流闪蒸中的特征现象出发,对射流闪蒸过程中的动量传递、热量传递与质量传递方面进行了综述。研究表明:射流闪蒸耦合强化技术在强化传热传质方面具有很大的优越性,工业化应用的潜在价值巨大。

关键词：射流闪蒸耦合强化工程应用

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：