检索结果-内蒙古大学图书馆

Development of LIDAR Based Gait Training System with Gait Assessment

Development of LIDAR Based Gait Training System with Gait As...

International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON

作者： Supharak Sakdarakse Pakpum Somboon Biomedical Engineering Program Faculty of Engineering Chulalongkorn University Bangkok Thailand

ISBN: (数字)9781728164861

ISBN: (纸本)9781728164878

Due to the limitations of the clinical gait training and gait assessment devices, the gait training systems with capabilities of gait parameter measurement have been developed so that patients can use these devices in ambulatory condition for daily rehabilitation. This research proposes a wheeled walker equipped with a 2D laser scanner (LIDAR) for a novel prototype of gait training system. Gait parameters such as stride length and step length were concurrently measured based on this developed system and a clinical gait assessment system (Qualisys) in order to investigate the performance of this prototype. It was found that the assessments of these gait parameters were appropriately preformed with the sufficient accuracy. This developed system may effectively enable daily gait training for community use.

关键词： Legged locomotion Training Laser radar Foot Prototypes Measurement by laser beam Footwear

来源：评论

学校读者我要写书评

暂无评论

Review on cesium doping in perovskite active layer and transport layer towards high-efficiency and stability

引用

AIP Conference Proceedings 2024年第1期3213卷

作者： William Harrison Winnetouw Akhmad Herman Yuwono Nofrijon Sofyan Donanta Dhaneswara Widodo Wahyu Purwanto Departement of Metallurgical and Materials Engineering Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Interdisciplinary Engineering Education and Research Unit Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Departement of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia Energy System Engineering Study Program Faculty of Engineering Universitas Indonesia Depok West Java 16424 Indonesia

Perovskite material is considered as one of next-generation solar cells that will have good potential to replace the current silicon-based solar cells. However, several disadvantages still limit the application of this materials due to the unstable phase, crystal defects during fabrication, toxic, and susceptible to cell degradation upon humidity and ultraviolet exposure. Several methods and engineering works have been made to overcome those disadvantages including doping, a technique which induces element(s) or compound(s) that could obtain better performance. One of the promising elements is cesium (Cs) that can be doped as a cation, compound or additive which would alter the interface between the electron-selective layer and the strain of perovskite structure. By having this element, the improved higher efficiency and operation stability can be significantly expected. This review article summarizes the efforts have been carried out by researchers working on Cesium doping on the perovskite solar cell towards high efficiency and operational stability. In has been found up to present that the best Cesium cation doping was able to bring up the improvement of efficiency up to 23,71%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Cardioprotective and renoprotective effects of melatonin and vitamin E on fluoride-induced hypertension and renal dysfunction in rats

引用

Comparative Clinical Pathology 2024年第1期33卷 33-45页

作者： Oyagbemi, Ademola Adetokunbo Ajibade, Temitayo Olabisi Esan, Oluwaseun Olanrewaju Adetona, Moses Olusola Awoyomi, Omolola Victoria Omobowale, Temidayo Olutayo Ola-Davies, Olufunke Eunice Saba, Adebowale Benard Adedapo, Adeolu Alex Nkadimeng, Sanah Malomile McGaw, Lyndy Joy Kayoka-Kabongo, Prudence Ngalula Yakubu, Momoh Audu Nwulia, Evaristus Oguntibeju, Oluwafemi Omoniyi Department of Veterinary Physiology and Biochemistry Faculty of Veterinary Medicine University of Ibadan Ibadan Nigeria Department of Veterinary Medicine Faculty of Veterinary Medicine University of Ibadan Ibadan Nigeria Department of Anatomy Faculty of Basic Medical Sciences University of Ibadan Ibadan Nigeria Federal College of Animal Health and Production Technology Moor Plantation Ibadan Nigeria Department of Veterinary Pharmacology and Toxicology Faculty of Veterinary Medicine University of Ibadan Ibadan Nigeria Department of Life and Consumer Sciences College of Agriculture and Environmental Sciences University of South Africa Florida Campus University of South Africa Florida South Africa Phytomedicine Programme Department of Paraclinical Science Faculty of Veterinary Science University of Pretoria Old Soutpan Road Onderstepoort 0110 South Africa Department of Agriculture and Animal Health College of Agriculture and Environmental Sciences University of South Africa Florida South Africa Department of Environmental and Interdisciplinary Sciences College of Science Engineering & Technology COPHS Texas Southern University Houston TX United States Howard University College of Medicine Department of Psychiatry and Behavioral Sciences Howard University Hospital 2041 Georgia Avenue Washington 20060 DC United States Department of Biomedical Sciences Faculty of Health and Wellness Sciences Cape Peninsula University of Technology Bellville 7535 South Africa

Fluoride is an important toxicological and environmental toxicant that is implicated in diverse cardiorenal system dysfunctions via the induction of oxidative stress. The present study aims at evaluating the cardioprotective and renoprotective effects of melatonin and vitamin E on fluoride toxicity on biomarkers of oxidative stress, clinical pathology, and their molecular mechanism of action. Apparently healthy male rats of the Wistar strain (n = 50;160 ± 7.5 g), were randomly distributed into five groups of ten animals per group as follows: Control, sodium fluoride (NaF, 25 mg/kg), NaF and melatonin 20 mg/kg i.p.;NaF and vitamin E 50 mg/kg p/o, NaF plus melatonin and vitamin E administered orally. NaF and melatonin were administered for fifteen consecutive days, whereas vitamin E was administered every 72 h. Blood pressure parameters, oxidative stress biomarkers, electrocardiography, histopathology, and immunohistochemical staining were performed. From this study, NaF intoxication provoked reduction in renal and cardiac systemic antioxidants, alterations of haemodynamic and electrocardiographic parameters, heightened blood urea nitrogen (BUN), creatinine, angiotensin converting enzyme, angiotensin 2 type 1 receptor, kidney injury molecule 1, interleukin 1 beta in the renal tissues, cardiac troponin, and nuclear kappa beta. However, the administration of either melatonin or vitamin E, and its combination mitigated high blood pressure, normalized electrocardiographic changes, abrogated biomarkers of oxidative stress, improved renal function, and attenuated inflammation. The combination of melatonin and vitamin E effectively mitigated cardiovascular and renal toxicities associated with fluoride intoxication through the prevention of cardio-renal dysfunction, oxidative stress, and inflammatory processes. © 2023, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.

关键词： Fluoride Hypertension Melatonin Rat Vitamin E

来源：评论

学校读者我要写书评

暂无评论

High performance gamma-ray spectrometer based on Cs3Cu2I5 single crystal grown by room-temperature vacuum solvent-evaporation method

引用

Journal of Alloys and Compounds 2025年 1027卷

作者： Seo, Jiwon Song, Seungho Park, Minhwan Byun, Jangwon Park, Beomjun Park, Chansun Jang, Mee Yeom, Jung-Yeol Dept. of Health and Safety Convergence Science Korea University Seoul02841 Korea Republic of Interdisciplinary Program in Precision Public Health Korea University Seoul02841 Korea Republic of Dept. of Bioengineering Korea University Seoul02841 Korea Republic of Dept. of Materials Science and Engineering Korea University Seoul02841 Korea Republic of The Institute for High Technology Materials and Devices Korea University Seoul02841 Korea Republic of Global Health Technology Center Korea University Seoul02841 Korea Republic of Daejeon34057 Korea Republic of School of Biomedical Engineering Korea University Seoul02841 Korea Republic of

In this study, the properties of Cs3Cu2I5 (CCI) crystals grown using the Slow Vacuum Evaporation Technique (SVET) were examined. Crystals were grown at room temperature (300 K, 27 °C) under vacuum conditions, producing single crystals with maximum diameter of 13 mm over 23 days. We confirmed excellent crystallinity via X-ray diffraction (XRD), compositional uniformity via X-ray photoelectron spectroscopy (XPS), and homogeneity via electron probe micro analyzer (EPMA). UV-Vis measurements indicated a high transmittance of 83 % and a bandgap of 3.64 eV. The Stokes shift of 110 nm, smaller than previously reported values, contributed to faster decay times and improved low-energy detection feasibility. Time-resolved photoluminescence (TR-PL) showed a rapid decay component (4.1 ns), accounting for 95.11 % of the total decay, demonstrating superior properties compared to existing reports. The gamma-ray detection capabilities of the CCI crystals were evaluated using six radioactive sources (Am-241, Ba-133, Co-57, Na-22, Cs-137, and Mn-54), achieving excellent energy resolution, including 5.2 % at 662 keV. The crystals displayed a highly linear response to gamma radiation (R² = 0.99998) with a light yield of 55,613 photons/MeV. Moreover, assessments of multiple crystals grown under identical conditions showed consistent performance with a coefficient of variation (CV) of 1.23 %. These findings confirm that SVET is a highly effective and cost-efficient method for producing high-quality CCI crystals, offering significant advantages over other growth techniques. © 2025 Elsevier B.V.

关键词： Gamma ray spectrometers

来源：评论

学校读者我要写书评

暂无评论

Compatibility of Tio2 Reflective Material with Ce:Gagg Scintillators in Harsh Environments

SSRN

引用

SSRN 2024年

作者： Park, Chansun Elmughrabi, Abdallah Melis, Alima Cho, Shinhaeng Kim, Sangsu Yeom, Jung-Yeol Global Health Technology Research Center Korea University Seoul02841 Korea Republic of Department of Bioengineering Korea University Seoul02841 Korea Republic of Interdisciplinary Program in Precision Public Health Korea University Seoul02841 Korea Republic of Department of Radiation Oncology Chonnam National University Medical School Gwangju61469 Korea Republic of School of Biomedical Engineering Korea University Seoul02841 Korea Republic of

In this study, we developed Ce:GAGG ceramic scintillators (containing 5 × 5 × 2 mm3 Ce:GAGG single crystals) encapsulated by different light reflectors, namely, Teflon (400 μm), enhanced specular reflector (ESR) film (65 μm), and a titanium dioxide (TiO2) reflector with different thicknesses and measured their γ-ray spectra under irradiation by a 137Cs radioactive source. The reflectance of a 100-µm-thick (optimal thickness) TiO2 layer surpassed those of the other two counterparts and resulted in a high light-collection efficiency. In order to assess the temperature dependence of the reflectors, samples were heated up to 300 °C in air. The measured reflectance decreased with the increasing temperature, and the color of the reflector’s surface changed. The observed variations in the surface morphology, measured by scanning electron microscopy, corresponded to the determined reflectance of the TiO2 layer. Upon heating above 200 °C in air, the TiO2 layer decomposed into other oxides, with a simultaneous increase in its surface porosity. On the other hand, Ce:GAGG single crystal sample heated at 300 °C in vacuum showed only a negligible color variation, retained 80.3% of their initial reflectance, and exhibited an energy resolution of 12.8%. This implies that oxidation may be the cause of performance degradation, and a passivation layer may allow the use of reflectors at high temperatures. This was verified when a TiO2 layer covered with a heat-resistant epoxy exhibited comparable performance by isolating the reflecting from the air. The results obtained in this study suggest that a TiO2 layer can be used as a long-wavelength reflector in oxide and other types of scintillators for efficient radiation detection in harsh environments, including air-free environments, such as in aerospace, under vacuum conditions or when used in conjunction with a protective passivation layer. © 2024, The Authors. All rights reserved.

关键词： Titanium dioxide

来源：评论

学校读者我要写书评

暂无评论

Preoperative and postoperative joint motion in chihuahuas with Grade III medial patellar luxation: A kinematic and goniometric analysis

引用

Veterinary Journal 2025年 313卷 106369页

作者： Chayatup, Kannika Wangdee, Chalika Soontornvipart, Kumpanart Department of Veterinary Surgery Faculty of Veterinary Science Chulalongkorn University Phayathai Road Pathumwan Bangkok 10330 Thailand Biomedical Engineering Program Faculty of Engineering Chulalongkorn University Phayathai Road Pathumwan Bangkok 10330 Thailand

Medial patellar luxation (MPL) is a common orthopaedic disorder in dogs, resulting in stifle instability and altered pelvic limb biomechanics. While its effects on stifle function have been extensively documented, the influence on adjacent joints and the course of biomechanical recovery following surgical correction remain poorly characterized. This study aimed to evaluate active (AROM) and passive (PROM) range of motion in the stifle, hip, and tarsal joints of Chihuahuas with Grade III MPL using two-dimensional kinematic and goniometric analyses. Seventeen client-owned Chihuahuas were enrolled, comprising ten MPL-affected dogs and seven clinically healthy controls. MPL dogs underwent surgical correction, and joint motion assessments were performed preoperatively and at 2, 4, 6, and 8 weeks postoperatively. Significant reductions in stifle AROM and PROM, particularly in extension, were observed in the MPL group compared to controls, indicating functional impairment. Compensatory increases in hip and tarsal AROM were also detected preoperatively, suggesting biomechanical adaptation. Following surgery, stifle AROM progressively improved and approached control values by week 8, whereas stifle PROM remained consistently reduced. Temporal changes in hip and tarsal AROM suggested early compensatory adaptations, which gradually resolved as stifle function improved. However, persistent stifle PROM limitations underscore the need for early, targeted rehabilitation. A multimodal strategy addressing both primary joint dysfunction and compensatory changes is essential to optimize recovery. Baseline joint motion data may serve as valuable benchmarks for evaluating surgical outcomes and guiding individualized postoperative care. © 2025 Elsevier Ltd

关键词： Active range of motion Goniometry Joint motion Kinematic analysis Medial patellar luxation Passive range of motion

来源：评论

学校读者我要写书评

暂无评论

一种乳酸菌-金属有机框架复合物用于强化肿瘤乏氧光动力和免疫治疗

引用

Science China Materials 2023年第1期66卷 363-374页

作者：李田忠王金勇陈桐楷 Swelm Wageh Ahmed AAl-Ghamdi 于江天谢中建张晗 Interdisciplinary Center of High Magnetic Field Physics of Shenzhen University College of Physics and Optoelectronic EngineeringDepartment of OtolaryngologyShenzhen Institute of Translational MedicineShenzhen Second People’s Hospitalthe First Affiliated HospitalShenzhen UniversityShenzhen 518060China Shenzhen International Institute for Biomedical Research Shenzhen 518000China Science and Technology Innovation Center Guangzhou University of Chinese MedicineGuangzhou 510405China Department of Physics Faculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Institute of Pediatrics Shenzhen Children’s HospitalShenzhen 518038China

开发长期有效的癌症治疗技术仍然是科研工作者和临床医生面临的重要任务.厌氧型乳酸菌(LAB)具有天然的乏氧倾向性,可自发富集在缺氧的肿瘤微环境中.金属有机框架(MOF)是一类独特的纳米材料,其中的ZIF-67可以自发分解过氧化氢产氧,且析... 详细信息

开发长期有效的癌症治疗技术仍然是科研工作者和临床医生面临的重要任务.厌氧型乳酸菌(LAB)具有天然的乏氧倾向性,可自发富集在缺氧的肿瘤微环境中.金属有机框架(MOF)是一类独特的纳米材料,其中的ZIF-67可以自发分解过氧化氢产氧,且析氧能力可被光照增强.然而,LAB或MOF单独应用于肿瘤治疗的效果并不令人满意.在本文中,我们制备了一种MOF修饰的乳酸菌制剂,用以在缺氧性肿瘤中局部产生活性氧(ROS)助力光动力治疗,同时精准诱导宿主肿瘤免疫.这些细菌表面被ZIF-67纳米材料修饰(LAB@ZIF-67),经体内循环后富集在肿瘤微环境中.细菌表面的ZIF-67可以被CT-26细胞吸收,并且在光照后检测到细胞内快速生成ROS.体内实验表明,该细菌复合物可通过光动力疗法消灭肿瘤,同时诱导肿瘤特异的炎性反应,招募巨噬细胞和T细胞实现肿瘤的免疫治疗.此类材料-细菌复合物为今后研发肿瘤主动靶向药物和癌症免疫疗法提供了新思路.

关键词：肿瘤微环境金属有机框架光动力免疫治疗肿瘤免疫缺氧性巨噬细胞厌氧型

来源：评论

学校读者我要写书评

暂无评论

Tumor Detection, Segmentation and Classification Challenge on Automated 3D Breast Ultrasound: The TDSC-ABUS Challenge

arXiv

引用

arXiv 2025年

作者： Luo, Gongning Xu, Mingwang Chen, Hongyu Liang, Xinjie Tao, Xing Ni, Dong Jeong, Hyunsu Kim, Chulhong Stock, Raphael Baumgartner, Michael Kirchhoff, Yannick Rokuss, Maximilian Maier-Hein, Klaus Yang, Zhikai Fan, Tianyu Boutry, Nicolas Tereshchenko, Dmitry Moine, Arthur Charmetant, Maximilien Sauer, Jan Du, Hao Bai, Xiang-Hui Raikar, Vipul Pai Montoya-Del-Angel, Ricardo Martí, Robert Luna, Miguel Lee, Dongmin Qayyum, Abdul Mazher, Moona Guo, Qihui Wang, Changyan Awasthi, Navchetan Zhao, Qiaochu Wang, Wei Wang, Kuanquan Wang, Qiucheng Dong, Suyu School of Computer Science and Technology Harbin Institute of Technology Harbin150001 China Department of Mathematics Faculty of Science National University of Singapore Singapore National-Regional Key Technology Engineering Laboratory for Medical Ultrasound School of Biomedical Engineering Shenzhen University Medical School Shenzhen University Shenzhen China Laboratory Shenzhen University Shenzhen China School of Biomedical Engineering and Informatics Nanjing Medical University Nanjing China Pohang Korea Republic of Heidelberg Division of Medical Image Computing Heidelberg Germany Faculty of Mathematics and Computer Science Heidelberg University Germany Heidelberg Germany HIDSS4Health - Helmholtz Information and Data Science School for Health Karlsruhe Heidelberg Germany Pattern Analysis and Learning Group Department of Radiation Oncology Heidelberg University Hospital Germany Department of Biomedical Engineering and Health KTH Royal Institute of Technology Stockholm Sweden France FathomX Singapore Saw Swee Hock School of Public Health National University of Singapore Singapore Philips Research University of Girona Spain Department of Robotics and Mechatronics Engineering DGIST Korea Republic of Department of Interdisciplinary Studies of Artificial Intelligence DGIST Korea Republic of National Heart and Lung Institute Faculty of Medicine Imperial College London London United Kingdom Centre for Medical Image Computing Department of Computer Science University College London London United Kingdom Lab School of Communication and Information Engineering Shanghai University Shanghai China Faculty of Science Mathematics and Computer Science Informatics Institute University of Amsterdam Amsterdam1090 GH Netherlands Department of Biomedical Engineering and Physics Amsterdam UMC Amsterdam1081 HV Netherlands Xi’an Jiaotong-Liverpool University China Department of Ultrasound Harbin Medical University Cancer Hospital No. 150 Haping Road Nangang

Breast cancer is one of the most common causes of death among women worldwide. Early detection helps in reducing the number of deaths. Automated 3D Breast Ultrasound (ABUS) is a newer approach for breast screening, which has many advantages over handheld mammography such as safety, speed, and higher detection rate of breast cancer. Tumor detection, segmentation, and classification are key components in the analysis of medical images, especially challenging in the context of 3D ABUS due to the significant variability in tumor size and shape, unclear tumor boundaries, and a low signal-to-noise ratio. The lack of publicly accessible, well-labeled ABUS datasets further hinders the advancement of systems for breast tumor analysis. Addressing this gap, we have organized the inaugural Tumor Detection, Segmentation, and Classification Challenge on Automated 3D Breast Ultrasound 2023 (TDSC-ABUS2023). This initiative aims to spearhead research in this field and create a definitive benchmark for tasks associated with 3D ABUS image analysis. In this paper, we summarize the top-performing algorithms from the challenge and provide critical analysis for ABUS image examination. We offer the TDSC-ABUS challenge as an open-access platform at https://***/ to benchmark and inspire future developments in1algorithmic research. © 2025, CC BY.

关键词： Image segmentation

来源：评论

学校读者我要写书评

暂无评论

Identification of finite circular metric spaces by magnitude and Riesz energy

arXiv

引用

arXiv 2024年

作者： Kodama, Hiroki O’Hara, Jun Center for Mathematical Engineering Musashino University 3-3-3 Ariake Koto-ku Tokyo135-8181 Japan Interdisciplinary Theoretical and Mathematical Sciences Program RIKEN 2-1 Hirosawa Saitama Wako-shi351-0198 Japan Department of Mathematics and Informatics Faculty of Science Chiba University 1-33 Yayoi-cho Inage Chiba263-8522 Japan

We study the problem whether regular polygons and cycle graphs can be identified by the magnitude or the discrete Riesz energy. We give an affirmative answer for a finite number of cases when the number of vertices is small and a negative answer for an infinite number of wide cases by giving a way to construct non-isometric spaces, which we call isomers, with the same magnitude or the discrete Riesz energy. We study whether isomers can be distinguished by the magnitude homology *** Codes 51F99 Copyright © 2024, The Authors. All rights reserved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Simulation of arrow-shaped micromixer with obstacles in blood plasma mixing

引用

AIP Conference Proceedings 2024年第1期3080卷

作者： Ziyan Muhammad Aqsha Basari Mohammad Akita Indianto Ridho Irwansyah Muhammad Satrio Utomo Siti Fauziyah Rahman Biomedical Engineering Study Program Department of Electrical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Research Center for Biomedical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Energy Systems Engineering Graduate Program Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Department of Mechanical Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok West Java 16424 Indonesia Research Center for Metallurgy National Research and Innovation Agency Komplek PUSPIPTEK Setu Tangerang Selatan Banten 15314 Indonesia

In recent years, several applications of micromixers have been reported to have a number of advantages, including the use of small amounts of plasma, short reaction times, and good reaction efficiency. The samples analyzed in this study were blood plasma and distilled water. The process is carried out by passive mixing which is based on a microchannel structure to enhance the diffusion of molecules for efficient mixing. The arrow shape was chosen as the micromixer design because it has a better blending performance than the T and Y shapes. The types of obstacles also used to improve the mixing process. The simulation was carried out on COMSOL Multiphysics software version 5.6. The results showed better mixing results for the micromixer design with triangle right facing obstacles with the highest Reynolds number was 9.4326. Then followed by ellips obstacles with a value of 9.4322, then without obstacles that is 9.4309, after that the triangle left facing with a value of 9.4006, and finally the lowest Reynolds number is a design with a diamond obstacles of 9.2514.

关键词：

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：