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Electrical performance and reliability analysis of vertical gallium nitride Schottky barrier diodes with dual-ion implanted edge termination

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Chip 2024年第3期3卷 36-42页

作者： Bo Li Jinpei Lin Linfei Gao Zhengweng Ma Huakai Yang Zhihao Wu Hsien-chin Chiu Hao-Chung Kuo Chunfu Zhang Zhihong Liu Shuangwu Huang Wei He Xinke Liu College of Materials Science and Engineering College of Electronics and Information EngineeringInstitute of Microelectronics(IME)Guangdong Research Center for Interfacial Engineering of Functional MaterialsState Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Department of Electronic Engineering Chang Gung UniversityTaoyuan 333TaiwanChina Department of Photonics and the Institute of Electro-Optical Engineering and with Foxconn Semiconductor Research InstituteNational Chiao Tung UniversityHsinchu 300TaiwanChina Xidian University School of MicroelectronicsXi’an710071China

In this study,a galliumnitride(GaN)substrate and its 15μmepitaxial layer were entirely grown by adopting the hydride vapor phase epitaxy(HVPE)*** enhance the breakdown voltage(VBR)of vertical GaN-on-GaN Schottky barrier diodes(SBDs),a dual ion coimplantation of carbon and heliumwas employed to create the edge *** resulting devices exhibited a low turn-on voltage of 0.55 V,a high Ion/Ioff ratio of approximately 109,and a lowspecific onresistance of 1.93 mU cm^(2).When the ion implantation edge was terminated,the maximumVBR of the devices reached 1575 V,with an average improvement of 126%.These devices demonstrated a high figure of merit(FOM)of 1.28 GW cm^(-2) and showed excellent reliability during pulse stress testing.

关键词： Vertical GaN SBD HVPE Dual ion co-implantation Leakage mechanism Device reliability

Outcomes of a non-randomised audit of single pigtail suture stents in urolithiasis management of Asian patients in Singapore

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Asian Journal of Urology 2024年第2期11卷 324-330页

作者： Ee Jean Lim Zhen Wei Choo Reshma Mangat Pradeep Durai Sarvajit Biligere yiquan Tan Loh Hin Yeung Marcus Nicole Andrea Seet Li Ting chin Tiong Heng Stefania Ferreti Vineet Gauhar Urology Department Singapore General HospitalSingapore Urology Department Tan Tock Seng HospitalSingapore Urology Department Ng Teng Fong HospitalSingapore Urology Department Azienda Ospedaliera-Uiversitaria(Hospital and University of Parma)ParmaItaly

Objective:Double-J(DJ)ureteric stents are commonly placed perioperatively for semirigid or flexible ureteroscopic renal *** is believed that lesser stent material within the bladder mitigates stent-related *** study aimed to evaluate the J-Fil ureteral stent,a single pigtail suture stent compared with conventional DJ stent in relation to stent symptoms in an Asian population undergoing ureterorenal ***:Based on internal audit committee recommendation approval,the records of 50 patients retrieved,available data of 41 patients who were prospectively enrolled into two groups(Group 1[J-Fil stent group],n=21 and Group 2[DJ stent group],n=20)between August 2020 to January 2021,were *** compared were nature of procedure,stone location and size,ease of deployment or removal,and complications.A modified universal stent symptom questionnaire was used to assess morbidity of stent symptoms within 48 h of insertion and at ***:Both groups had similar median age,distribution in male to female ratio,and stone *** overall median universal stent symptom questionnaire score at insertion was similar for bladder pain,flank or loin pain,and quality of life between Group 1 and 2;however,at removal Group 1 fared significantly better than Group 2,especially for flank or loin pain and pain at *** groups had similar ease in insertion with no hospital ***:Our audit favoured the single pigtail suture stent in Asian ureters in mitigating stent-related *** showed a good safety profile with easy deployment and *** promises a new standard in stenting.

关键词： Stent Ureteroscopy Pigtail suture stent Asianpatient Flexible ureteroscopic renal surgery

Simple bone cysts of the proximal humerus presented with limb length discrepancy:A case report

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World Journal of Clinical Cases 2024年第6期12卷 1130-1137页

作者： Cing Syue Lin Shang Ming Lin Syang-Peng Rwei chin-Wen Chen Tsung-Yu Lan Department of Orthopedic Surgery Far Eastern Memorial HospitalNew Taipei City 220Taiwan Department of Materials and Textiles Asia Eastern University of Science and TechnologyNew Taipei City 220Taiwan Institute of Organic and Polymeric Materials National Taipei University of TechnologyTaipei City 10608Taiwan

BACKGROUND Simple bone cysts(SBC)are benign tumor-like bone lesions typically identified in *** SBC may lead to growth disturbances or growth arrest,such cases are *** mechanisms behind these observations remain ***,research on the etiology of SBC remains inconclusive,and there has been no consensus on the appropriate timing and methodology for *** SUMMARY Here,we present our experience in the successful surgical management of a 10-year-old girl with SBC,who presented with a pathological fracture complicated by malunion of the displaced fracture,varus deformity,and limb length *** hypothesized two possible etiologies for the patient’s growth arrest and subsequent humerus varus deformity:(1)Direct disruption of the physis by fluid from the cyst itself;and(2)damage to the epiphysis due to repetitive pathological fractures associated with *** addressing this case,surgical intervention was undertaken to correct the proximal humerus varus *** approach offered the advantages of simultaneously correcting angular abnormalities,achieving mild limb lengthening,providing definitive SBC treatment,and reducing the overall treatment *** As per current literature,acute correction of acute angular deformity in proximal humeral SBC is not well ***,in this specific case,acute correction was considered an optimal solution.

关键词： Bone cyst Solitary cysts Benign Humerus Growth arrest Limb length discrepancy Case report

Designing a Secure and Scalable Data Sharing Mechanism Using Decentralized Identifiers(DID)

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 809-822页

作者： Iuon-Chang Lin I-Ling Yeh ching-Chun Chang Jui-Chuan Liu chin-Chen Chang Department of Management Information Systems National Chung Hsing UniversityTaichung402TaiwanChina Information and Communication Security Research Center Feng Chia UniversityTaichung407TaiwanChina Department of Information Engineering and Computer Science Feng Chia UniversityTaichung407TaiwanChina

Centralized storage and identity identification methods pose many risks,including hacker attacks,data misuse,and single points of ***,existing centralized identity management methods face interoperability issues and rely on a single identity provider,leaving users without control over their ***,this paper proposes a mechanism for identity identification and data sharing based on decentralized *** scheme utilizes blockchain technology to store the identifiers and data hashed on the chain to ensure permanent identity recognition and data *** is stored on InterPlanetary File System(IPFS)to avoid the risk of single points of failure and to enhance data persistence and *** the same time,compliance with World Wide Web Consortium(W3C)standards for decentralized identifiers and verifiable credentials increases the mechanism’s scalability and interoperability.

关键词： Self-sovereign identity decentralized identifier blockchain

Lightning in a Forest (Wild) Fire: Mechanism at the Molecular Level

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Atmospheric and Climate Sciences 2024年第1期14卷 128-135页

作者： See Leang chin Xueliang Guo Harmut Schroeder Huanbin Xu Tie-Jun Wang Ruxin Li Weiwei Liu Department of Physics and Center for Optics Photonics and Lasers (COPL) Laval University Quebec Canada Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Max Planck Institute of Quantum Optics Garching Germany State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai China Institute of Modern Optics Nankai University Tianjin China

The mechanism of lightning that ignites a forest fire and the lightning that occurs above a forest fire are explained at the molecular level. It is based on two phenomena, namely, internal charge separation inside the atmospheric cloud particles and the existence of a layer of positively charged hydrogen atoms sticking out of the surface of the liquid layer of water on the surface of rimers. Strong turbulence-driven collisions of the ice particles and water droplets with the rimers give rise to breakups of the ice particles and water droplets into positively and negatively charged fragments leading to charge separation. Hot weather in a forest contributes to the updraft of hot and humid air, which follows the same physical/chemical processes of normal lightning proposed and explained recently[1]. Lightning would have a high probability of lighting up and burning the dry biological materials in the ground of the forest, leading to a forest (wild) fire. The burning of trees and other plants would release a lot of heat and moisture together with a lot of smoke particles (aerosols) becoming a strong updraft. The condition for creating lightning is again satisfied which would result in further lightning high above the forest wild fire.

关键词： Forest Wild Fire Lightning Molecular Level

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超级猫咪表情包

小哥白尼（野生动物） 2024年第4期 40-41页

作者： Sunny(文) Lili chin(图) 不详

嘿,朋友,当你翻到这一页,说明我们很有缘!非常欢迎你来到动物王国喵星人的直播课!我是今日主播猫博士。

关键词：动物王国表情包直播课

苏州精神与工业记忆的结合——苏州新达产业园改造

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当代建筑 2024年第5期 92-99页

作者：张海翱 Joan Pik Kuan chin 上海交通大学设计学院奥默默工作室

1场地位置。项目北邻阳澄湖大道,东靠亭新街,西达龙会街,南邻唯和路,位于交通便利地带。人们可以通过北京-上海高速公路、城铁园区站及多条公交线路(包括169路、161路、228路、127路、129路等)便捷到达项目所在地。原主出入口位于亭新... 详细信息

1场地位置。项目北邻阳澄湖大道,东靠亭新街,西达龙会街,南邻唯和路,位于交通便利地带。人们可以通过北京-上海高速公路、城铁园区站及多条公交线路(包括169路、161路、228路、127路、129路等)便捷到达项目所在地。原主出入口位于亭新街道。

关键词： “工改工”微更新建筑改造工业上楼苏州精神

Performance of pulsed plasma thruster at low discharge energy

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Plasma Science and Technology 2024年第4期26卷 122-132页

作者：李鸿俊林泽豪胡浩俊吴文东陈爱虹杜德扬 Department of Physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Engineering The University of Nottingham Malaysia CampusSemenyih 43500Malaysia Faculty of Engineering Multimedia UniversityCyberjaya 63100Malaysia

As the size of satellites scales down, low-power and compact propulsion systems such as the pulsed plasma thruster(PPT) are needed for stabilizing these miniature satellites in orbit. Most PPT systems are operated at 2 J or more of discharge energy. In this work, the performance of a PPT with a side-fed, tongue-flared electrode configuration operated within a lower discharge energy range of 0.5-2.5 J has been investigated. Ablation and charring of the polytetrafluoroethylene propellant surface were analyzed through field-effect scanning electron microscopy imaging and energy-dispersive X-ray spectroscopy. When the discharge energy fell below 2 J, inconsistencies occurred in the specific impulse and the thrust efficiency due to the measurement of the low mass bit. At energy ≥2 J, the performance parameters are compared with other PPT systems of similar configuration and discussed in depth.

关键词： pulsed plasma thruster low discharge energy performance parameters

黄志伟之两首马来西亚中文艺术歌曲的表演分析

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黄志伟之两首马来西亚中文艺术歌曲的表演分析

作者：李姵萱（Lee chin Yee）成都大学

学位级别：硕士

本论文探讨了1975年出生的杰出马来西亚华人作曲家黄志伟有影响力的作品。他以卓越的技艺将西方和亚洲音乐传统融为一体而闻名。黄志伟的作品,特别是2008年创作的《圆月中秋》和2017年创作的《情缘》,是马来西亚中文艺术歌曲这一发展中... 详细信息

本论文探讨了1975年出生的杰出马来西亚华人作曲家黄志伟有影响力的作品。他以卓越的技艺将西方和亚洲音乐传统融为一体而闻名。黄志伟的作品,特别是2008年创作的《圆月中秋》和2017年创作的《情缘》,是马来西亚中文艺术歌曲这一发展中体裁的显著例子。这些作品以其独特且文化丰富的作曲风格,突显了黄志伟对这一体裁的贡献。本研究考察了马来西亚中文艺术歌曲的历史和文化背景,重点关注其与华人移民的联系。通过对歌词和音乐的深入分析,笔者追溯了黄志伟作曲风格的发展。通过与黄志伟以及两位专业马来西亚华人歌唱家的访谈,本次研究进一步丰富了对其艺术发展的认识,并揭示了他的作品在现代古典音乐中的更广泛意义。分析不仅强调了黄志伟独特的作曲风格,还揭示了马来西亚中文艺术歌曲中所包含的多元文化遗产。本论文分为五章。第一章介绍了黄志伟的传记和其作曲方法概述。第二章概述了马来西亚中文艺术歌曲的历史背景。第三章详细探讨了2008年创作的《圆月中秋》和2017年创作的《情缘》的歌词、音乐和表演细节,包括与黄志伟及两位马来西亚华人专业歌手的访谈。第四章比较了中国和马来西亚华人歌唱家在中文艺术歌曲中的演唱风格。第五章对比了黄志伟2008年创作的《圆月中秋》、2017年创作的《情缘》和2021年创作的《遇见你》。附录中附有与作曲家及首次在马来西亚演唱这两首歌曲的歌唱家洪美枫和岑大伟的访谈记录。本研究强调了通过音乐来表达身份在马来西亚华人社区中的重要性,旨在保存其独特的文化遗产。它展示了马来西亚中文艺术歌曲如何将中国音乐传统与当地马来西亚元素相结合,促进文化交流,增强音乐欣赏和教育的兴趣,从而丰富社会的文化环境。

关键词：表演分析马来西亚中文艺术歌曲黄志伟