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Investigation into charge carrier dynamics in organic light-emitting diodes

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Nano Research Energy 2024年第2期3卷 39-46页

作者： Dong-Guang Zheng Hyeon-Dong Lee Gyeong Won Lee Dong-Soo Shin Jeongwon Kim Jong-In Shim Zhiqun Lin Tae-Woo Lee Dong ha Kim Information Engineering College Hangzhou Dianzi UniversityHangzhou 311305China Department of Materials Science and Engineering Seoul National University1 Gwanak-roGwanak-guSeoul 08826Republic of Korea Department of Photonics and Nanoelectronics Hanyang University ERICA55 Hanyangdeahak-roSangnok-guAnsanGyeonggi 15588Republic of Korea Department of Chemistry and Nanoscience Ewha Womans University52Ewhayeodae-gilSeodaemun-guSeoul 03760Republic of Korea Department of Chemical and Biomolecular Engineering National University of Singapore4 Engineering Drive 4Singapore 117585Singapore School of Chemical and Biological Engineering Institute of Engineering ResearchResearch Institute of Advanced MaterialsSoft FoundrySeoul National University1 Gwanak-roGwanak-guSeoul 08826Republic of Korea Basic Sciences Research Institute(Priority Research Institute) Ewha Womans UniversitySeoul 03760Republic of Korea Nanobio∙Energy Materials Center(National Research Facilities and Equipment Center) Ewha Womans UniversitySeoul 03760Republic of Korea

Organic light-emitting diodes(OLEDs)have demonstrated remarkable advancements in both device lifetime and luminous ***,insufficient operation lifetime due to device degradation remains a major hurdle,especially for brighter *** the degradation mechanisms of OLEDs due to the degradation of functional materials and the formation of defects in device architectures continues to be a significant ***,we evaluate the degradation characteristics by scrutinizing the electrical and optical properties,as well as analyzing the charge carrier dynamics in pristine and aged states of phosphorescent OLEDs(PhOLEDs).We show that degradation mechanisms in PhOLEDs can be elucidated in terms of the ideality factors of current and luminance in pristine and aged device *** consistent shifts in distinct ideality factors across various states points out that the device degradation is attributed to the deterioration of the guest material,***-light-emitting phosphorescent ***,the incongruity in ideality factor changes between the two states indicates that the degradation results from the deterioration of non-light-emitting *** characterization experiments provide further evidence that this degradation is primarily attributed to the deterioration of CBP-host *** thorough understanding of degradation mechanisms established in this study can contribute to realizing the highly reliable PhOLEDs with a long lifetime.

关键词： organic light-emitting diodes ideality factor carrier transport processes degradation mechanism

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基于ROS的校园移动售餐机器人

长江信息通信 2024年第1期37卷 143-145页

作者：徐晓骏哈玉佳南京工业大学浦江学院机电学院江苏南京211200

随着高校用餐高峰期食堂的拥挤程度日趋上升,为了缓解拥堵,同时减少外卖餐盒等一次性垃圾的产生,研制出一款具有自主的路径规划能力的提供售餐服务的机器人。基于ROS机器人操作系统,设计分层的硬件架构,和软件框架,通过激光雷达、深度... 详细信息

随着高校用餐高峰期食堂的拥挤程度日趋上升,为了缓解拥堵,同时减少外卖餐盒等一次性垃圾的产生,研制出一款具有自主的路径规划能力的提供售餐服务的机器人。基于ROS机器人操作系统,设计分层的硬件架构,和软件框架,通过激光雷达、深度相机扫描感知周围环境,构建地图,自主导航,利用红外传感器、语音识别、播报模块,进行人机交互。使用售餐机器人结合手机APP能够在教学楼、宿舍附近,提供点餐、支付一体化服务,有效缩短消费人群与食堂之间的距离,相比外卖更加绿色环保,提高效率,实现了智慧餐饮的新理念,优化了餐饮消费的服务体验。

关键词： ROS 移动售餐自动驾驶旭日X3派 STM32 SLAM算法

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曳引式电梯轮槽磨损故障特点、成因及检测技术

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品牌与标准化 2024年第3期 124-126页

作者：哈云王家忠云南现代电梯销售有限公司云南昆明650021 云南省特种设备安全检测研究院云南昆明650224

曳引式电梯在驱动形式上为曳引驱动,使电梯完成升降功能。曳引式电梯在运行过程中会受相关因素影响而出现运行故障,常见的故障为电梯轮槽磨损,若不及时进行维护,则容易影响电梯的运行效率与安全。本文基于曳引式电梯为例,深入探究电梯... 详细信息

曳引式电梯在驱动形式上为曳引驱动,使电梯完成升降功能。曳引式电梯在运行过程中会受相关因素影响而出现运行故障,常见的故障为电梯轮槽磨损,若不及时进行维护,则容易影响电梯的运行效率与安全。本文基于曳引式电梯为例,深入探究电梯轮槽磨损的特点、成因与检测技术。

关键词：曳引式电梯轮槽故障检测

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医科类院校创新创业教育改革探究

创新创业理论研究与实践 2024年第5期7卷 92-96页

作者：哈丽娜刘东李鑫宁夏医科大学创新创业学院宁夏银川750004 宁夏医科大学公共卫生与管理学院宁夏银川750004

在创新创业教育背景下,医科类院校在开展创新创业教育时面临诸多挑战。医学生学习强度大,对创新创业重视不够,缺乏创新创业主观能动性,重理论轻实践,教学效果不佳,课程与“专创”“科创”的融合不紧密,课程内容层次不明显,缺乏载体,指... 详细信息

在创新创业教育背景下,医科类院校在开展创新创业教育时面临诸多挑战。医学生学习强度大,对创新创业重视不够,缺乏创新创业主观能动性,重理论轻实践,教学效果不佳,课程与“专创”“科创”的融合不紧密,课程内容层次不明显,缺乏载体,指导教师创新创业实践性不强。该文通过加强医学生的创新创业观念,创新创业教育改革与思政教育相融合,推动创新创业课程体系改革,推进创新创业实践平台建设,加强学生创新创业团队培育,打造专兼结合“双师型”师资等措施,以医学生能力培养为主线,将思想政治教育、创新创业教育贯穿人才培养的全过程;以企业对医学人才的需求为导向,建立就业创业人才培养有效机制;完善就业创业教育组织保障机制,加强对学生就业创业指导的服务;构建就业创业教育课程体系,建立就业创业教育课程群。

关键词：医科院校创新创业教育改革人才培养

Analytical evaluation and experimental validation on dynamic rocking behavior for shallow foundation considering structural response

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Earthquake Engineering and Engineering Vibration 2022年第1期21卷 37-51页

作者： Kil-Wan Ko Jeong-Gon ha Dong-Soo Kim Department of Civil and Environmental Engineering UC BerkeleyCalifornia 94720USA Advanced Structures and Seismic Safety Research Division Daejeon 34057Korea Department of Civil and Environmental Engineering KAISTDaejeon 34141Korea

The challenge in the practical application of rocking foundations is the estimation of its performance,particularly the rotation angle,during a strong *** this study,the dynamic rocking behavior for a shallow foundation considering structural response was evaluated through two analytical approaches:the conventional soil-foundation-structure interaction(SFSI)governing equation of a single-degree-of-freedom(SDOF)structure on a rocking shallow foundation,and the Housner rocking model(i.e.,a rocking rigid block on a rigid base).Both approaches were validated with dynamic centrifuge *** test models consisted of a soft soil deposit,a shallow rectangular foundation,and an SDOF structure dominated by a bending behavior.A total of 11 foundation-structure systems and six seismic waves,including recorded earthquake signals and sinusoidal waves,were *** results showed that the conventional SFSI equation well predicted the maximum rotation during strong ***,this method was less accurate regarding the rotational phase information and maximum rotation of the foundation during weak *** the other hand,although the modified Housner′s rocking model required five parameters relevant to a soil-foundation-structure system,it overestimated the maximum rotation of the foundation when compared with the results from dynamic centrifuge tests.

关键词： soil-foundation-structure interaction maximum rotation angle rocking foundation Housner rocking model dynamic centrifuge test

基于升脾润燥浅谈针灸调节肠道菌群治疗干燥综合征相关干眼病

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光明中医 2024年第11期39卷 2301-2304页

作者：邓雯哈国栋蔡定均(指导) 成都中医药大学针灸推拿学院四川成都610075

干燥综合征相关干眼病是一种慢性自身免疫系统疾病。研究发现,部分肠道微生物及其代谢产物可以不同程度改善其病理症状,而肠道菌群又与脾胃功能密切相关。同时,针灸作为传统治疗方法,对干预自身免疫系统疾病及肠道菌群失衡都有较好的疗... 详细信息

干燥综合征相关干眼病是一种慢性自身免疫系统疾病。研究发现,部分肠道微生物及其代谢产物可以不同程度改善其病理症状,而肠道菌群又与脾胃功能密切相关。同时,针灸作为传统治疗方法,对干预自身免疫系统疾病及肠道菌群失衡都有较好的疗效。因此,此文浅析针灸基于“升脾润燥”治则调摄肠道菌群,提高中焦运转、升举精微向上以防治干燥综合征相关干眼病的可行性,以期为临床治疗提供更多视角。

关键词：干燥综合征干眼病肠道菌群升脾润燥针灸疗法综述

益生菌及其代谢产物调控胰高血糖素样肽-1缓解2型糖尿病的研究进展

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食品科学 2024年第12期45卷 292-303页

作者：程之梁张钰龙杨涵哈惠王潆笛陈菲菲刘飞焦月华东北农业大学食品学院乳品科学教育部重点实验室黑龙江哈尔滨150030 黑龙江中医药大学药物安全性评价中心黑龙江哈尔滨150040

2型糖尿病(type 2 diabetes mellitus,T2DM)是一种由碳水化合物摄入与代谢不平衡导致的慢性代谢性疾病,是当前全球最难治疗的代谢性疾病之一。患者主要表现出高血糖、胰岛素分泌不足、胰岛素抵抗、多食多饮多尿等症状。T2DM常伴随着很... 详细信息

2型糖尿病(type 2 diabetes mellitus,T2DM)是一种由碳水化合物摄入与代谢不平衡导致的慢性代谢性疾病,是当前全球最难治疗的代谢性疾病之一。患者主要表现出高血糖、胰岛素分泌不足、胰岛素抵抗、多食多饮多尿等症状。T2DM常伴随着很多并发症如动脉粥样硬化、肾功能损伤、非酒精性脂肪性肝病等。胰高血糖素样肽-1(glucagon-like peptide-1,GLP-1)是一种由31个氨基酸组成的多肽,主要用于维持体内葡萄糖稳态和缓解T2DM,但是其半衰期较短,在体内很容易被降解。本文先介绍了益生菌及其对宿主体内GLP-1有调控作用的代谢产物,并介绍了GLP-1对T2DM的缓解作用,包括GLP-1与T2DM的联系、二甲双胍与GLP-1激动剂的临床应用、GLP-1对T2DM缓解作用的不足以及相关益生元对GLP-1含量的调控;最后介绍了益生菌及其代谢产物对GLP-1的调控机制,其中包括短链脂肪酸、胆汁酸、色氨酸及其衍生物和胞外多糖,以期为益生菌及其代谢产物调控宿主GLP-1的产生与释放,并对T2DM的缓解作用方面的研究提供一定的参考。

关键词： 2型糖尿病益生菌胰高血糖素样肽-1 代谢产物

Epidemiological and Diagnostic Profile of Patients with Chronic Hepatitis B Virus from 2017 to 2021 in Parakou, Republic of Benin

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Advances in Infectious Diseases 2024年第1期14卷 147-161页

作者： Khadidjatou Saké Cossi Angelo Attinsounon Aboudou raϊmi Kpossou Morayo Omm Ani Salami Astrid Alexandrine Hountondji Kofi-Mensa Savi de Tovè Rhonel Ahanhanzo-Glèlè Kpémahoun René Kèkè Sossa Edmond Gbédo Jean Sehonou Nicolas Kodjoh Department of Medicine and Medical Specialties Faculty of Medicine University of Parakou Parakou Benin Department of Medicine and Medical Specialties Faculty of Health Sciences University of Abomey-Calavi Cotonou Benin Health Program to Fight AIDS Cotonou Benin National Program for the Control of Hepatitis Cotonou Benin

Introduction: Viral hepatitis B is a public health problem worldwide. The objective of this study was to determine the epidemiological and diagnostic profile of chronic carriers of hepatitis B virus seen for gastroenterology consultations in Parakou, Republic of Benin. Patients and Methods: This was a cross-sectional and descriptive study with retrospective data collection. Patients seen for gastroenterology consultations from January 1, 2017 to June 30, 2021 at the Regional Teaching Hospital of Borgou/Alibori (CHUD-B/A) and having been diagnosed as chronic carriers of hepatitis B virus were included. A minimum initial assessment was required to be included. The minimum sample size was calculated with Schwartz formula. The variable of interest was the detection of HBsAg twice and at least 6 months apart. The other variables studied were sociodemographic, clinical and paraclinical data. The data collected were analyzed using SPSS 17 software. Results: A total of 2786 patients were seen for gastroenterology consultations, including 1126 (40.4%) HBsAg-positive patients. Among them, 417 patients met the inclusion criteria and were the subject of the present study. The average age of the patients was 34.8 ± 10.5 years. Two hundred and forty-seven patients (65.7%) were male, representing a sex ratio of 1.9. The discovery of positive HBsAg status was made during systematic screening in 231 patients (55.4%). Scarifications were noted in 373 patients (89.4%). Asthenia was reported in 184 patients (44.1%). Co-infections with human immunodeficiency virus, hepatitis C and D viruses were 0% (0 in 92), 2.8% (4 in 146) and 14.3% (2 in 146), respectively. During the initial assessment, 274 patients (65.7%) were sero-negative for chronic HBeAg infection, 21 (5%) had clinically significant fibrosis including 16 (3.8%) at the stage of cirrhosis and 7 patients (5.4%) had hepatocellular carcinoma. Conclusion: In Parakou, chronic hepatitis B virus infection is common and affects young pe

关键词： Chronic Infection HBV Epidemiology Diagnosis Parakou

Emphysematous Cystitis: Report of Two Cases and Review of the Literature

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Health 2024年第4期16卷 309-318页

作者： Roland Bertile Banga-Mouss Nestor Ghislain Andzouana Mbamognoua Yanick Dimi Nyanga Armel Melvin Atipo Ondongo Steve Aristid Ondziel-Opara raïssa Laure Mayanda Ohouanda Nick Arnaud Monabeka Evariste Bouenizabila Anani Séverin Wences Odzébé Prosper Alain Bouya Urology Department University Hospital of Brazzaville Brazzaville Republic of the Congo Faculty of Health Sciences Marien Ngouabi University Brazzaville Republic of the Congo Department of Metabolic and Endocrine Diseases University Hospital of Brazzaville Brazzaville Republic of the Congo

Emphysematous cystitis is a rare complication of lower urinary tract infection whose prognosis is conditioned by the delay in treatment. The predisposition of diabetic patients to urinary infections caused by gas-producing bacteria is considered one of the most common factors in the occurrence of emphysematous cystitis. The currently recommended diagnostic test is CT scanning, which has definite value in assessing gas accumulation in the bladder wall and lumen. The authors report the observations of two patients aged 68 and 80 who were treated for emphysematous cystitis complicating diabetes mellitus. The evolution was favorable under treatment with antibiotic therapy, insulin therapy and bladder drainage.

关键词： Emphysematous Cystitis Computed Tomography Lower Urinary Tract Infection Diabetes Mellitus