检索结果-南通市图书馆

Balance control of a 12-DOF mobile manipulator based on two-wheel inverted pendulum robot

在线全文

学校读者我要写书评

暂无评论

Journal of Measurement Science and Instrumentation 2013年第1期4卷 52-57页

作者： Gang Wang seunghwan choi Jangmyung Lee Dept.of Electrical Engineering Pusan UniversityBusan 609-735Korea

Humanoid mobile manipulator which is based on two-wheel inverted pendulum robot has been *** control is a key problem for this kind of centroid-variable *** to the principle of two wheel inverted pendulum,a timely angle compensation is necessary to make the system keep balance when the centroid *** this paper,a method based on coordinate transformation is introduced to get the compensatory angle and a 12-DOF mobile manipulator is also used to check the *** and experimental results show the effectiveness of the method.

关键词： angle compensation inverted pendulum variable centroid humanoid

Novel ternary metals-based telluride electrocatalyst with synergistic effects of high valence non-3d metal and oxophilic Te for pH-universal hydrogen evolution reaction

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第5期80卷 736-743,I0015页

作者： seunghwan Jo Wenxiang Liu Yanan Yue Ki Hoon Shin Keon Beom Lee Hyeonggeun choi Bo Hou Jung Inn Sohn Division of Physics and Semiconductor Science Dongguk UniversitySeoul 04620Republic of Korea School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072HubeiChina School of Physics and Astronomy Cardiff UniversityCardiff CF243AAWalesUK

Electrocatalyst designs based on oxophilic foreign atoms are considered a promising approach for developing efficient pH-universal hydrogen evolution reaction(HER)electrocatalysts by overcoming the sluggish alkaline HER ***,we design ternary transition metals-based nickel telluride(Mo WNi Te)catalysts consisting of high valence non-3d Mo and W metals and oxophilic Te as a first demonstration of non-precious heterogeneous electrocatalysts following the bifunctional *** Mo WNi Te showed excellent HER catalytic performance with overpotentials of 72,125,and 182 mV to reach the current densities of 10,100,and 1000 mA cm^(-2),respectively,and the corresponding Tafel slope of 47,52,and 58 mV dec-1in alkaline media,which is much superior to commercial Pt/***,the HER performance of Mo WNi Te is well maintained up to 3000 h at the current density of 100 mA cm^(-2).It is further demonstrated that the Mo WNi Te exhibits remarkable HER activities with an overpotential of 45 mV(31 mV)and Tafel slope of 60 mV dec-1(34 mV dec-1)at 10 mA cm^(-2)in neutral(acid)*** superior HER performance of Mo WNi Te is attributed to the electronic structure modulation,inducing highly active low valence states by the incorporation of high valence non-3d transition *** is also attributed to the oxophilic effect of Te,accelerating water dissociation kinetics through a bifunctional catalytic mechanism in alkaline *** functional theory calculations further reveal that such synergistic effects lead to reduced free energy for an efficient water dissociation process,resulting in remarkable HER catalytic performances within universal pH environments.

关键词： Telluride catalyst Oxophilic effect High valence non-3d metal Bifunctional mechanism pH-universal hydrogen evolution reaction

Polymorphic ventricular tachycardia during phase Ⅱ cardiac rehabilitation in a patient with heart failure: a case report

在线全文

学校读者我要写书评

暂无评论

Journal of Geriatric Cardiology 2020年第1期17卷 64-66页

作者： Hee-Eun choi Chul Kim Se-Heum Park Doo-Il Kim Ki-Hun Kim Dong-Kie Kim seunghwan Kim Jino Park Department of Rehabilitation Medicine Inje University College of MedicineHaeundae Paik HospitalBusanSouth Korea Department of Rehabilitation Medicine Inje University College of MedicineSanggye Paik HospitalSeoulSouth Korea Department of Internal Medicine Inje University College of MedicineHaeundae Paik HospitalBusanSouth Korea

A 67-year-old man with a history of a prior cardiac arrest with ventricular fibrillation(VF)due to myocardial infarction underwent phase I(inpatient)and II(outpatient)cardiac rehabilitation(CR)exercise *** the 33th CR session,15 min after the start of exercise training,the patient had syncope with evidence of a polymorphic and wide QRS complex tachycardia on electrocardiogram(ECG)*** initiation of a polymorphic ventricular tachycardia was evidenced by the coupled premature ventricular complex observed in the ECG monitoring screen(Figure 1).

关键词： Cardiac rehabilitation Heart failure Ventricular tachycardia

Wireless,multimodal sensors for continuous measurement of pressure,temperature,and hydration of patients in wheelchair

在线全文

学校读者我要写书评

暂无评论

npj Flexible Electronics 2023年第1期7卷 479-493页

作者： Seokjoo Cho Hyeonseok Han Hyunwoo Park Sung-Uk Lee Jae-Hwan Kim Sung Woo Jeon Mengqiu Wang Raudel Avila Zhaoqian Xi Kabseok Ko Minsu Park Jungyup Lee Myungwoo choi Je-Sang Lee Weon Gi Min Byeong-Ju Lee Soyeong Lee Jungrak choi Jimin Gu Jaeho Park Min Seong Kim Junseong Ahn Osman Gul Chankyu Han Gihun Lee seunghwan Kim Kyuyoung Kim Jeonghyun Kim Chang-Mo Kang Jahyun Koo Sung Soo Kwak Sungbong Kim Dong Yun choi Seokwoo Jeon Hyung Jin Sung Yong Bae Park Minkyu Je Young Tae Cho Yong Suk Oh Inkyu Park Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea School of Electrical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Advanced 3D Printing Technology Development Division Korea Atomic Energy Research InstituteDaejeon 34057Republic of Korea Department of Electrical and Computer Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA State Key Laboratory of Structural Analysis for Industrial Equipment Department of Engineering MechanicsDalian University of TechnologyDalian 116023P.R.China Department of Mechanical Engineering Northwestern UniversityEvanstonIL 60208USA DUT-BSU Joint Institute Dalian University of TechnologyDalian 116023China Ningbo Institute of Dalian University of Technology Ningbo 315016China Department of Electronics Engineering Kangwon National UniversityChuncheon 24341Republic of Korea Querrey-Simpson Institute for Bioelectronics Northwestern UniversityEvanstonIL 60208USA Sibel Health Inc NilesIL 60714USA Department of Materials Science and Engineering KAIST Institute for The Nanocentury(KINC)Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Rehabilitation Medicine Gimhae Hansol Rehabilitation&Convalescent HospitalGimhae 50924Republic of Korea Department of planning and development Gimhae Hansol Rehabilitation&Convalescent HospitalGimhae 50924Republic of Korea Department of rehabilitation medicine Pusan national university hospitalBusan 49241Republic of Korea Department of AI Convergence Network Ajou UniversitySuwon 16499Republic of Korea Department of Electronic Convergence Engineering Kwangwoon UniversitySeoul 01897Republic of Korea Korea Photonics Technology Institute Gwangju 61007Republic of Korea School of Biomedical Engineering Korea UniversitySeoul 02841Republic of Korea Interdisciplinary Program in Precision Public Health Korea UniversitySeoul 02841Republic of Korea Center

Individuals who are unable to walk independently spend most of the day in a *** population is at high risk for developing pressure injuries caused by ***,early diagnosis and prevention of these injuries still remain ***,we introduce battery-free,wireless,multimodal sensors and a movable system for continuous measurement of pressure,temperature,and hydration at skin *** device design includes a crack-activated pressure sensor with nanoscale encapsulations for enhanced sensitivity,a temperature sensor for measuring skin temperature,and a galvanic skin response sensor for measuring skin hydration *** movable system enables power harvesting,and data communication to multiple wireless devices mounted at skin-cushion interfaces of wheelchair users over full body *** evaluations and numerical simulations of the devices,together with clinical trials for wheelchair patients,demonstrate the feasibility and stability of the sensor system for preventing pressure injuries caused by sitting.

关键词： injuries modal mounted