检索结果-南通市图书馆

Endoscopic extraction of a submucosal esophageal foreign body piercing into the thoracic aorta:A case report

World Journal of Clinical Cases 2022年第8期10卷 2484-2490页

作者： Zhi-Cao chen gui-quan chen Xiao-Chun chen Chang-Ye Zheng Wei-Dong Cao Gang-Hao Deng Department of Gastroenterology Affiliated Dongguan HospitalSouthern Medical UniversityDongguan 523000Guangdong ProvinceChina Department of Radiology Affiliated Dongguan HospitalSouthern Medical UniversityDongguan 523000Guangdong ProvinceChina Department of Cardiovascular Surgery Affiliated Dongguan HospitalSouthern Medical UniversityDongguan 523000Guangdong ProvinceChina

BACKGROUND Aorto-esophageal injury is a rare but life-threatening complication of esophageal foreign bodies,which typically requires open *** best way to treat patients with this condition remains *** date,few reports have described an aortic wall directly penetrated by a sharp foreign ***,we present a rare case of a fishbone completely embedded in the esophageal muscularis propria and directly piercing the aorta,which was successfully treated by endoscopy and thoracic endovascular aortic repair(TEVAR).CASE SUMMARY We report the case of a 71-year-old man with a 1-d history of retrosternal pain after eating *** abnormal findings were observed by the emergency *** tomography showed a fishbone that had completely pierced through the esophageal mucosa and into the *** patient refused to undergo surgery for personal reasons and was *** days after the onset of illness,he was readmitted to our *** examination showed a nodule with a smooth surface in the middle of the *** ultrasonography confirmed a fishbone under the *** performing TEVAR,we incised the esophageal mucosa under an endoscope and successfully removed the *** patient has remained in good condition for 1 *** Incising the esophageal wall under endoscope and extracting a foreign body after TEVAR may be a feasible option for cases such as ours.

关键词： Endoscopy Esophageal foreign body Esophageal perforation Aortic penetration Case report

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

Utilizing engineered extracellular vesicles as delivery vectors in the management of ischemic stroke:a special outlook on mitochondrial delivery

引用

Neural Regeneration Research 2025年第8期20卷 2181-2198页

作者： Jiali chen Yiyang Li Xingping quan Jinfen chen Yan Han Li Yang Manfei Zhou Greta Seng Peng Mok Ruibing Wang Yonghua Zhao Institute of Chinese Medical Sciences State Key Laboratory of Quality Research in Chinese MedicineUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmacy Hunan Provincial People’s Hospitalthe First Affiliated Hospital of Hunan Normal UniversityChangshaHunan ProvinceChina Department of Electrical and Computer Engineering University of MacaoTaipaMacao Special Administrative RegionChina Department of Pharmaceutical Sciences Faculty of Health SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina

Ischemic stroke is a secondary cause of mortality worldwide,imposing considerable medical and economic burdens on *** vesicles,serving as natural nanocarriers for drug delivery,exhibit excellent biocompatibility in vivo and have significant advantages in the management of ischemic ***,the uncertain distribution and rapid clearance of extracellular vesicles impede their delivery *** utilizing membrane decoration or by encapsulating therapeutic cargo within extracellular vesicles,their delivery efficacy may be greatly ***,previous studies have indicated that microvesicles,a subset of large-sized extracellular vesicles,can transport mitochondria to neighboring cells,thereby aiding in the restoration of mitochondrial function post-ischemic *** extracellular vesicles have also demonstrated the capability to transfer mitochondrial components,such as proteins or deoxyribonucleic acid,or their sub-components,for extracellular vesicle-based ischemic stroke *** this review,we undertake a comparative analysis of the isolation techniques employed for extracellular vesicles and present an overview of the current dominant extracellular vesicle modification *** the complex facets of treating ischemic stroke,we also delineate various extracellular vesicle modification approaches which are suited to different facets of the treatment ***,given the burgeoning interest in mitochondrial delivery,we delved into the feasibility and existing research findings on the transportation of mitochondrial fractions or intact mitochondria through small extracellular vesicles and microvesicles to offer a fresh perspective on ischemic stroke therapy.

关键词： delivery engineering extracellular vesicles identification ischemic stroke isolation mitochondria targeting strategy therapeutic effects

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

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

引用

Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting Liu quan‑Liang Zhao chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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

Efficient photocatalytic reduction of CO2 to formate by a molecular noble metal-free system

引用

Science China Chemistry 2025年第1期 152-156页

作者： Lihua Zhang Lingjing chen Huatian Shi Yue Wei gui chen Tai-Chu Lau School of Environment and Civil Engineering Research Center for Eco-environmental Engineering Dongguan University of Technology Department of Chemistry and Institute of Molecular Functional Materials City University of Hong Kong

Reducing CO2to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse *** present,developing an efficient non-noble metal photo/electrocatalytic system for converting CO2to a specific product beyond CO is still a big ***,we report a new cobalt complex bearing 2,2′-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO2to formate （HCOO-）.Turnover number （TON） for HCOO-up to 677 with 99%selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole （BIH） as sacrificial reductant in a CO2-saturated NMP/TEA （v/v,3:1） solution under visible light *** potential electrolysis at-1.41 V （***/Ag Cl） in the presence of 12 m M Et3NHBF4also produced HCOO-with Faradaic efficiency of 39%.Spectroscopic and electrochemical studies suggest that a[CoI-H]species is the key intermediate for CO2reduction.

关键词：

来源：

同方期刊数据库

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

注水式结肠镜在肠镜检查中的应用体会

引用

中国内镜杂志 2015年第12期21卷 1252-1256页

作者：陈桂权詹磊磊刘宇虎周红梅广东省东莞市人民医院消化内科广东东莞523000

目的该研究主要通过对注水式结肠镜与传统注气式结肠镜在肠镜检查中的对比研究,探讨注水式结肠镜的应用体会。方法通过纳入该院内镜中心2014年10月-2015年4月肠镜检查患者,随机分为水置换组、单纯注水组和空气组,主要观察指标为患者腹... 详细信息

目的该研究主要通过对注水式结肠镜与传统注气式结肠镜在肠镜检查中的对比研究,探讨注水式结肠镜的应用体会。方法通过纳入该院内镜中心2014年10月-2015年4月肠镜检查患者,随机分为水置换组、单纯注水组和空气组,主要观察指标为患者腹痛程度及需要麻醉的比例,次要观察指标为盲肠插管成功率、进镜时间、息肉检出率。结果 1共入组肠镜检查者442例,其中水置换组145例,单纯注水组147例,空气组150例,组间一般临床资料差异无统计学意义(P>0.05);2水置换组、单纯注水组腹痛评分及麻醉需求比例均明显低于空气组,差异有统计学意义(P0.05);3水置换组、单纯注水组进镜时间、总时间明显高于空气组,肠镜辅助操作明显低于空气组,差异均有统计学意义(P0.05);4肠镜操作方法是影响患者麻醉需求的独立相关危险因素(P<0.05)。结论注水肠镜可在不影响插管成功率与息肉检出率的同时,能减少患者腹痛,降低麻醉需求,值得临床推广应用。

关键词：水置换单纯注水注气式

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

氨化(2—乙基已基)膦酸(单·2—乙基已基)酯萃取重稀土元素的分配规律

引用

暨南理医学报(理科专版) 1986年第3期 60-66页

作者：谢桂泉陈国健暨南大学化学系

本文研究了氮化2-乙基已基膦酸单2-乙基已基酯(简称 P507)-磺化煤油——HCl 体系萃取重稀土元素（Dy、Ho、Er,Tm、Yb、Lu）的分配规律.在氨化 P507-Kero-HCl 体系中,随着水相酸度的变化,萃取机理亦发生变化.低酸度时为酸性萃取剂的阳离... 详细信息

本文研究了氮化2-乙基已基膦酸单2-乙基已基酯(简称 P507)-磺化煤油——HCl 体系萃取重稀土元素（Dy、Ho、Er,Tm、Yb、Lu）的分配规律.在氨化 P507-Kero-HCl 体系中,随着水相酸度的变化,萃取机理亦发生变化.低酸度时为酸性萃取剂的阳离子交换萃取机理;高酸度时为中性溶剂化物萃取机理,并从有相的红外光谱得到了证实.从本实验条件看,P507的氨化对萃取分离重稀土元素的影响,比对萃取分离钕—钐的影响小.

关键词：氨化萃取分离盐酸浓度稀土元素 ⅢB族元素氢离子浓度 pH值乙基链烷基分配规律膦酸磷化合物

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

A versatile synthetic strategy towards rare earth based metal-organic frameworks

引用

Science China Chemistry 2025年

作者： quan Shi Yun-Hao Xu Ming-Hui chen Peng Zhao Wen-Bo Deng Ji Xiong Kai Guo Ya-Qing Feng Bao Zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry Jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

基于区块链的车联网跨域数据安全传输系统设计

引用

现代电子技术 2025年第1期48卷 71-79页

作者：陈晨王斓凯施佺南通大学信息化中心江苏南通226019 南通大学交通与土木工程学院江苏南通226019

为有效应对车联网系统在数据传输过程中的安全问题,提出一种基于区块链的车联网跨域数据安全传输系统。该系统将车联网安全数据传输过程划分为注册、安全通信与数据共享三个关键环节。在注册阶段,车辆和路边单元需要通过可信机构完成注... 详细信息

为有效应对车联网系统在数据传输过程中的安全问题,提出一种基于区块链的车联网跨域数据安全传输系统。该系统将车联网安全数据传输过程划分为注册、安全通信与数据共享三个关键环节。在注册阶段,车辆和路边单元需要通过可信机构完成注册,以确保其的身份合法性;在通信阶段,为了减少路边单元与车辆频繁认证,设计了跨域认证的方法,保障数据传输的可靠性和完整性,并引入假名来保护用户隐私;在共享阶段,文中设计了基于多线程遍历共享广播森林的事务广播算法,利用广度优先搜索思想建立广播森林,并使用多线程遍历进行数据事务广播传输。实验仿真结果显示,文中方案的签名计算成本减少70%,验证计算成本减少41%;其次,在ER模型下,相比使用Gossip协议进行事务数据传输,该方案中交通数据事务总时间降低了93%;在BA模型下降低了87%。

关键词：区块链车联网身份认证密钥协商广播森林数据安全传输系统

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

经内镜放射状切开术在治疗结直肠吻合口良性狭窄中的临床应用

引用

中国内镜杂志 2019年第7期25卷 82-85页

作者：詹磊磊刘宇虎陈桂权广东省东莞市人民医院消化内科

目的探讨经内镜下放射状切开术在治疗结直肠吻合口良性狭窄中的有效性和安全性.方法选取2015年1月-2016年12月该院结直肠术后并吻合口良性狭窄的患者46例,均采用内镜下放射状切开术解除肠道狭窄,操作为同一内镜医生完成,对患者治疗效果... 详细信息

目的探讨经内镜下放射状切开术在治疗结直肠吻合口良性狭窄中的有效性和安全性.方法选取2015年1月-2016年12月该院结直肠术后并吻合口良性狭窄的患者46例,均采用内镜下放射状切开术解除肠道狭窄,操作为同一内镜医生完成,对患者治疗效果及术中、术后并发症进行总结,并随访1年,评估梗阻症状及吻合口狭窄复发情况.结果①入组46例患者中,45例(97.8%)治疗成功,操作时间12~36 min(平均18 min),住院天数2~6 d(平均3 d);②完成治疗的45例(100.0%)患者肠道梗阻症状均得到明显改善;③术中、术后均未出现穿孔、感染及严重的出血、腹痛等并发症;④41例(91.1%)患者完成随访,随访期间患者均未出现肠道梗阻症状及吻合口狭窄复发.结论经内镜下放射状切开术在治疗结直肠术后吻合口良性狭窄中安全、有效,值得临床推广应用.

关键词：结直肠吻合口良性狭窄内镜下放射状切开

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

1:13 phase formation mechanism and first-order magnetic transition strengthening characteristics in(La,Ce)Fe13–xSix alloys

引用

Rare Metals 2016年第9期35卷 691-700页

作者： Xiang chen Yun-gui chen Yong-Bo Tang Ding-quan Xiao College of Engineering and Technology Neijiang Teachers Normal UniversityNeijiang 641002China School of Materials Science and Engineering Sichuan UniversityChengdu 610065China

The effects of the introduction of Ce to La（1-x）CexFe（11.5）Si（1.5） alloys on 1：13 phase formation mechanism,the first-order magnetic phase transition strengthening characteristics,and magnetocaloric property were studied,*** results show that the formation mechanisms of 1：13 and La Fe Si phases in La（1-x）CexFe（11.5）Si（1.5） alloys are the same as those of Ce2Fe（17） and CeFe2 phases in Ce–Fe binary system,*** substitution of Ce in 1：13 phase which is limited can make the first-order magnetic phase transition characteristics strengthen,which can make thermal and magnetic hysteresis increase,the temperature interval of temperatureinduced phase transition decrease,and the critical magnetic field of field-induced magnetic phase transition（HC）increase,*** to the lattice shrink of 1：13phase with the increase in Ce content,the Curie temperatures（TC） show a linear *** maximum change in magnetic entropy gradually increases due to the decrease in temperature interval of temperature-induced phase transition,but the relative cooling capacities are all about80 Jákg-1at magnetic field of 2 T.

关键词： La1-xCexFe1 5Si1 5alloys Short-time annealing Large magnetocaloric effect Magnetocaloric materials

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：