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Effects of Key Operating Parameters on the Efficiency of Two Types of PEM Fuel Cell Systems (High-Pressure and Low-Pressure Operating) for Automotive Applications
Kim. Han-Sang, Lee. Dong-Hun, Min. Kyoungdoug, Kim. Minsoo 대한기계학회 Journal of mechanical science and technology 9 Pages
대한기계학회 Journal of mechanical science and technology 2005, Vol.19 No.4 1018-1026 (9 pages)
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Effects of foot pressure using the elastic band with rings during sit-to-stand in persons with stroke
Young-In Hwang, Ki-Song Kim 물리치료재활과학회 Physical Therapy Rehabilitation Science 5 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2017, 제 6권 제 4호 1 159-163 (5 pages)
a portable interface pressure operating system that can capture the foot pressure dis- tribution and contact area. Before starting, the operating sys- tem was checked by loading and unloading it several times. The sensor was equilibrated and calibrated using the in- strumentation supplied by the manufacturer. The CONFORMat System was placed on the floor for foot contact after the sen- sor was... Objective: Persons with stroke have a tendency to exhibit asymmetric weight-bearing during sit-to-stand because due to the attempt to support themselves with the non-paretic foot. However, there are few devices that can assist with sit-to-stand (STS) performance. This study was designed to investigate the use of the elastic band with rings (EBR) in improving weight-bearing effectively in persons with stroke during STS training. Design: Cross-sectional study. Methods: Thirteen stroke survivors... -
Correlation between caudal pulmonary artery diameter to body surface area ratio and echocardiography-estimated systolic pulmonary arterial pressure in dogs
Youngjae Lee, Wooshin Choi, Donghoon Lee, Jinhwa Chang, Ji-Houn Kang, Jihye Choi, Dongwoo Chang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 2호 14 243-251 (9 pages)
than in the normal group (p 0.0001). Linear regression analysis showed positive associations between PAP and right and left CPAD to BSA ratio (right, p = 0.0230; left, p = 0.0012). The receiver operating characteristic curve analysis revealed that the CPAD to BSA ratio had moderate diagnostic accuracy for detecting PAH. The operating point, sensitivity, specificity, and area under the curve... 0.0012). The receiver operating characteristic curve analysis revealed that the CPAD to BSA ratio had moderate diagnostic accuracy for detecting PAH. The operating point, sensitivity, specificity, and area under the curve were 28.35, 81.40%, 81.82%, and 0.870; respectively, for the right side and 26.92, 80.00%, 66.67%, and 0.822, respectively, for the left. The significant correlation of CPAD to BSA ratio with echocardiography-estimated systolic PAP supports its use in identifying PAH on survey... -
Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications
Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)
superhydrophobicity and offer additional design approaches for stable and robust superhydrophobic sur- faces with self-cleaning properties. Hong and Uhm [118] prepared superhydrophobic CNTs by low-pressure CF4 glow plasma to provide roughness and fuo- rination to CNTs. The total surface free energy of CNT powder treated by CF4 plasma for 20 min was calculated to be drastically decreased from... Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as... -
Laparoscopic ovariectomy in dogs: comparison between laparoendoscopic single-site and three-portal access
Angelo E. Tapia-Araya, Idoia D?az-G?emes Martin-Portugu?s, Laura Fresno Bermejo, Francisco Miguel S?nchez-Margallo 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 17 525-530 (6 pages)
the operating table. The left ovary was identified and a 5 mm grasping forceps was introduced through the operating channel to pull the ovary up. Using a 5 mm laparoscopic vessel sealer/divider device (LigaSure V; Valleylab; Covidien, Austria), the proper ovarian ligament, ovarian pedicle and suspensory ligament were progressively sealed and transected. Once the left ovary was completely... This study was conducted to evaluate the feasibility and therapeutic safety of laparoendoscopic single-site ovariectomy (LESS-OVE) and 3-portal laparoscopic ovariectomy (Lap-OVE) in dogs. Ten female mixed breed dogs were included in the study. Dogs were divided into group 1 (LESS-OVE; n = 5) and group 2 (Lap-OVE; n = 5). All procedures were performed by laparoscopic-skilled surgeons, and the anesthetic protocol was the same for all patients. In both groups, the ovarian vascular pedicle and... -
Development and Application of STS Teaching-Learning Program for the chapter on ‘weather and living’ of a science class for elementary school student
Ji-Hyo LEE 한국교원대학교 뇌기반교육연구소 Brain, Digital, & Learning 12 Pages
한국교원대학교 뇌기반교육연구소 Brain, Digital, & Learning 2017, 제 7권 제 2호 3 83-94 (12 pages)
Difficulty and operating time of program contents u Relationship between curriculum and contents of STS teaching / learning program Learning objectives statement u Logical flow between program contents and activities, and learning objectives Program idea u Knowledge, thinking, inquiry function Validation Criteria 선행 연구의 검증 기준과 본 연구의 검증 기준을 비교하면 교육과정에서 프로그램의... -
Linear Prediction Analysis and Quantization for the Conjugate-Structure Algebraic-Code-Excited Linear-Prediction Speech Compression Algorithm
Marcus L. George 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 12 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2012, 제 2권 제 1호 5 33-44 (12 pages)
Linux OpenSUSE operating system. 2. Background Overview Of CS-ACELP Speech Compression Algorithm A model of human speech production used in CS-ACELP is given in Figure 1 [9-11]. In the model an impulse train represents voiced speech, where the impulse train intervals vary according to the pitch of the speech. Similarly, a random noise generator represents unvoiced speech. A gain must be applied... Voice-over Internet Protocol (VoIP) telephony which is the transmission of real-time voice over an Internet Protocol (IP) data network, is increasingly becoming a variant telecommunication technology that one day may surpass the old analog and digital telephone systems. The Quality-of-Service (QoS) factor is an important parameter to be considered when measuring the performance of a VoIP system. Algorithmic delay (latency) may influence the QoS of a VoIP system. This paper presents the hardware... -
Open-Loop Pitch Analysis for the Conjugate-Structure Algebraic-Code-Excited Linear-Prediction Speech Compression Algorithm
Geetam Singh Tomar, Marcus L. George 인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 10 Pages
인문사회과학기술융합학회 예술인문사회융합멀티미디어논문지 2011, 제 1권 제 1호 5 41-50 (10 pages)
Linux OpenSUSE operating system. 2. Background Verview of CS-Acelp Speech Compression Algorithm A model of human speech production used in CS-ACELP is given in Figure 1 [11]. In the model an impulse train represents voiced speech, where the impulse train intervals vary according to the pitch of the speech. Similarly, a random noise generator represents unvoiced speech. A gain must be applied to... Voice-over Internet Protocol (VoIP) telephony which is the transmission of real-time voice over an internet protocol (IP) data network, is increasingly becoming a variant telecommunication technology that one day may surpass the old analog and digital telephone systems. The Quality-of-Service (QoS) factor is an important parameter to be considered when measuring the performance of a VoIP system. Algorithmic delay (latency) may influence the QoS of a VoIP system. This paper presents the hardware... -
Factors Influencing Intra-Operative Body Temperature in Laparoscopic Colectomy Surgery under General Anesthesia: An Observational Cohort
Kong Mi Jin, Yoon Haesang 한국기초간호학회 Journal of Korean Biological Nursing Science 8 Pages
한국기초간호학회 Journal of Korean Biological Nursing Science 2017, Volume 19, No 3 1 123-130 (8 pages)
of surgery (>2-3 hours), ambient operating room temperature Journal of Korean Biological Nursing Science 2017;19(3):123-130 pISSN 2383-6415 eISSN 2383-6423 https://doi.org/10.7586/jkbns.2017.19.3.123 www.bionursingjournal.or.kr Factors Influencing Intra-Operative Body Temperature in Laparoscopic Colectomy Surgery under General Anesthesia: An Observational Cohort Kong, Mi Jin 1·Yoon, Haesang 2... Purpose: This study aimed to identify factors influencing intra-operative core body temperature (CBT), and to develop a predictive model for intra-operative CBT in laparoscopic abdominal surgery. Methods: The prospective observational study involved 161 subjects, whose age, weight, and height were collected. The basal pre-operative CBT, pre-operative blood pressure, and heartbeat were measured. CBT was measured 1 hour and 2 hours after pneumoperitoneum. Results: Explanatory factors of... -
One-step synthesis of dual-transition metal substitution on ionic liquid based N-doped mesoporous carbon for oxygen reduction reaction
Ulziidelger Byambasuren, Yukwon Jeon, Dorjgotov Altansukh, Yunseong Ji, Yong-Gun Shul 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 8 53-64 (12 pages)
of synthesized ILC. The High resolution Hitachi H-800 system was used for TEM images obtaining. The Cu Kα-ray radiation (λ=1.5405 A) uti- lized Rigaku-Minifex diffractometer, which operating at 30 kV and 15 mA, was used to measurement of the XRD patterns. The XRD patterns were recorded between 2 θ=10-90 o with intervals of 0.2° and data collection velocity of 2° per minute. The XPS... Nitrogen (N)-doped ordered mesoporous carbons (OMCs) with a dual transition metal system were synthesized as non-Pt catalysts for the ORR. The highly nitrogen doped OMCs were prepared by the precursor of ionic liquid (3-methyl-1-butylpyridine dicyanamide) for N/C species and a mesoporous silica template for the physical structure. Mostly, N-doped carbons are promoted by a single transition metal to improve catalytic activity for ORR in PEMFCs. In this study, our N-doped mesoporous carbons were...