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IEEE EMBS International Conference on Information Technology Applications in Biomedicine (ITAB)

作者： J. H. Jung S. H. Yoon J. H. Kim I. C. Kim A. Y. Jeon S. Y. Ye B. C. Kim B. J. Shin J. H. Ro K. G. Nam Y. J. Kim G. R. Jeon Department of Interdisciplinary program in Biomedical Engineering Pusan National University Busan Korea PhysioLab Corp. Busan Korea Department of Physics Inje University Kyungnam Korea BK21 Medical Science Education Center School of medicine Pusan National Universiry Busan Korea Department of BioSystems Engineering Pusan National University Kyungnam Korea Department of Biomedical Engineering College of Medicine Pusan National University Busan Korea Department Electronics Engineering Pusan National University Busan Korea Department of Family Medicine Pusan National University Busan Korea PhysioLab Corporation Busan South Korea

An analysis of the conventional blood pressure estimation method of the oscillometric sphygmomanometer was performed through a computer simulation using an arterial pressure-volume(APV) model. A more accurate blood pressure estimation method was proposed from the analysis. Traditionally, the maximum amplitude algorithm was applied on the oscillation waveforms of the APV model to get the mean arterial pressure and the characteristic ratio. In doing so, the shape of pressure waveforms and the cutoff frequency of high-pass filter circuitry strongly affected the estimation of mean arterial pressure and characteristic ratio. This resulted in errors when estimating blood pressure. To find an algorithm independent from the influence of waveform shapes and filter parameters, the volume oscillation of the APV model and the phase shift of the oscillation with FFT were identified by increasing the cuff pressure from 1 mmHg to 200 mmHg (1 mmHg per second). The phase shift between the ranges of volume oscillation was then only observed between the systolic and diastolic blood pressures. The same results were obtained from simulations performed on two different arterial blood pressure waveforms and one hyperthermia waveform.

关键词： Blood pressure Shape Filters Performance analysis Computer simulation Cutoff frequency Circuits Frequency estimation Arterial blood pressure Hyperthermia

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Microfluidic cell culture chip employing polymeric nanofiber membrane

Microfluidic cell culture chip employing polymeric nanofiber...

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10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006

作者： Kim, Sung Rak Lee, Ki Hwa Lee, Kwang Ho Baek, Ju Yeoul Park, Yong Doo Sun, Kyung Lee, Sang Hoon Dept. of Biomedical Engineering Korea Univ. Korea Republic of Interdisciplinary Program in Medical and Biological Engineering Major Seoul National University Korea Republic of Korea Republic of

In this paper, we have developed cell chip employing polymeric nanofiber membrane which was used for the better diffusion of nutrition or other materials suchas growth factor and for the scaffold of cell culture, and we evaluated the function of this chip by culturing the human mesenchymal stem cells (hMSCs) which have large potential applications in the tissue engineering. © 2006 Society for Chemistry and Micro-Nano Systems.

关键词： Cell culture

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A novel artificial renal microchip employing polymeric nanofibers membrane

A novel artificial renal microchip employing polymeric nanof...

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10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006

作者： Lee, Kwang Ho Kim, Jae Gwan Kim, Duck Joong Lee, Sang Hoon Min, Byoung Goo Interdisciplinary Program in Biomedical Engineering Major Seoul National University Korea Republic of School of Mechanical and Aerospace Engineering Seoul National University Korea Republic of Dept. Biomedical Engineering College of Medicine Korea University Korea Republic of Dept. Biomedical Engineering College of Medicine Seoul National University Korea Republic of

In this study, a novel artificial renal replacement system is presented using a biocompatible polymeric nanofibers and MEMS technology. Usually, a classical artificial renal replacement system employs a semi-permeable membrane based hemodialyzer that replaces an ability of the kidney by removing metabolic toxins through diffusion and hydraulic pressure gradients. But, it has some limits in efficient filtration of metabolic byproducts (e.g.: urea, creatinine, and so on). We have developed PDMS based artificial renal microchips (AR chip) integrating biocompatible polymeric nanofibers which are utilized for the filtration of blood. Here, we demonstrate a novel artificial renal chip by integrating a high efficient biocompatible polymeric nanofibers membrane with the PDMS based micro-fluidic platform. Via the optimization of PDMS micro fluidic channel network and the multiple packaging of nanofibers membrane, we will realize the portable and wearable artificial kidney system. © 2006 Society for Chemistry and Micro-Nano Systems.

关键词： Nanofibers

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Abstracts for the 6th Congress of Asian Sleep Research Society

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Sleep and Biological Rhythms 2009年第4期7卷 A1-A49页

作者： Seog Ju Kim In Kyoon Lyoo Yu-Jin Lee Do-Un Jeong Hirohiko Kanai Masanori Ookubo Atsushi Yoshimura Masako Okawa Noto Yamada Takeshi Munezawa Yoshitaka Kaneita Yoneatsu Osaki Hideyuki Kanda Tadahiro Ohtsu Masumi Minowa Kenji Suzuki Susumu Hijuchi Hiroyuki Suzuki Takashi Ohida Takashi Abe Yoko Komada Shoichi Asaoka Yuichi Inoue Jin-Seong Lee Sang-Yong Cho Deependra Kumar Hruda N. Mallick Velayudhan M. Kumar Mahesh K. Kaushik Akihiro Karashima Noiihiro Katayama Mitsuyuki Nakao Ravindra P. Nagendra Sathiamma Sulekha Sathyaprabha T. Narasappa Pradhan Nityanadan Bindu M. Kutty M. Nirmala P. N. Ravindra Basavaraj Ramappa Tubaki T. N. Sathyaprabha D. Sudhakar G. S. Lavekar C. R. Chandrashekar Kazuyoshi Kitaoka Mika Shimizu Sachiko Chikahisa Kazuo Yoshizaki Hiroyoshi Sei Jong-Won Kim Misa Takegami Shin Yamazaki Yasuaki Hayashino Rei Ono Koji Otani Miho Sekiguchi Shinichi Konno Shunichi Fukuhara Antonia J. Jakobson Paul Fitzgerald Russell Conduit Xin Shirley Li Siu Ping Joyce Lam Wai Man Mandy Yu Yun Kwok Wing Kazue Okamoto-Mizuno Koh Mizuno Mituaki Yamamoto Shuichiro Shirakawa Hirokazu Doi Mikako Kato Kazuyuki Shinohara Masako Tamaki Shiori Matsuda Katsuo Yamazaki Tadao Hori Keiko Ogawa Kazumi Takahashi Kunio Kitahama Katuo Yamazaki Yoshimasa Koyama Kohei Shioda Yugo Ueda Yukiko Nakamura Clara Inoue Kazushige Goto Sunao Uchida Yuko Morita Yoshiko Honda Tohru Kodama Mari Hagihara Toru Nakajima Masato Saito Yoshihiko Koga Shinichiro Tanaka Hiroshi Yamadera Madoka Takahara Sachiko Suwa Minoru Onozuka Sadao Sato Fumiharu Togo Taiki Komatsu Takeshi Mitani Jongbae Choi Bin Zhang Taeko Sasai Hiromi Mitsubayashi Mitsuhiro Ohtsu Isao Hasegawa Tatsuya Ishii Akira Komori Asami Suzuki Yue Nakahara Mitsuyasu Hiroki Mariko Nakauma Nobuo Someya Tomomasa Ochiai Shouhei Komori Rayleigh Ping-Ying Chiang Zai-Ting Yeh Seong T. Kim Seung H. Yoon Jeong S. Kwon Jong H. Choi Hyung J. Ahn Youngsoo Kim Bolortuya Yunren Lichao Chen Radhika Basheer Robert W. Mccarley Robert E. Strecker Makoto Honda Tetsuaki Arai Miyuki Fukazawa Yutaka Honda Kuniaki T Department of Psychiatry Gachon University of Medicine and Science Incheon Republic of Korea Department of Psychiatry Seoul National University Seoul Republic of Korea Department of Neuropsychiatry and Center for Sleep and Chronobiology Seoul National University Hospital Seoul Republic of Korea Department of Neuropsychiatry Seoul National University Hospital Seoul Republic of Korea Seoul National University Hospital Seoul Republic of Korea Department of Psychiatry Shiga University of Medical Science Otsu Japan Division of Public Health Department of Social Medicine Nihon University School of Medicine Tokyo Japan Department of Public Health Nihon University School of Medicine Tokyo Japan Division of Environmental and Preventive Medicine Department of Social Medicine Faculty of Medicine Tottori University Yonago Japan Department of Hygiene and Preventive Medicine Fukushima Medical University Fukushima Japan Department of Public Health Showa University School of Medicine Tokyo Japan Faculty of Humanities Seitoku University Matsudo Japan Section on Behavioral Science Division of Clinical Research National Hospital Organization Kurihama Alcoholism Center Yokosuka Japan Department of Otolaryngology Second Hospital Fujita Health University Nagoya Japan National Hospital Organization Kurihama Alcoholism Center Kanagawa Japan Metropolitan Police Department Criminal Investigation Laboratory Tokyo Japan Japan Somnology Center Neuropsychiatrie Research Institute Tokyo Japan Department of Somnology Tokyo Medical University Tokyo Japan Japan Somnology Center Neuropsychiatric Research Institute Tokyo Japan Department of Somnology Tokyo Medical and Dental University Tokyo Japan Center for Sleep and Chronobiology Department of Psychiatry and Behavioral Science Seoul National University College of Medicine Seoul Republic of Korea Department of Psychiatry and Behavioral Science Center for Sleep and Chronobiology Seoul Republic of Korea Department of Physiology Al

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An automated measurement system of ultrasonic properties of tofu and acorn curd (Dotori Muk)

An automated measurement system of ultrasonic properties of ...

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作者： Li, Ying Anjaneya Reddy Guntur, S.R. Choi, Min Joo Paeng, Dong-Guk Marine Industrial Engineering Cheju National University Jeju 690-756 Korea Republic of Department of Medicine Cheju National University Jeju 690-756 Korea Republic of Interdisciplinary Postgraduate Program in Biomedical Engineering Cheju National University Jeju 690-756 Korea Republic of

Tofu was suggested as Tissue Mimicking Materials (TMMs) due to its low cost, availability, gelatinous nature, and shape flexibility. However, the similarity in acoustic properties of the different packets of Tofu and acorn curd (Muk) is critical for TMMs but not fully investigated yet. In order to improve the accuracy for time-consuming and multi-stepped measurements of acoustic properties, an automated measurement system was developed. Using the automated system, the acoustic properties Tofu and Muk were measured to know whether they are similar among the different samples. In conclusion, the acoustic properties were measured to be similar among the different packets of Tofu and Muk, suggesting them as potential TMMs.

关键词： Biomaterials

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Blank slate engineering at Florida Gulf Coast University - Innovative and multidisciplinary from the ground up

Blank slate engineering at Florida Gulf Coast University - I...

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113th Annual ASEE Conference and Exposition, 2006

作者： Blanchard, Susan Egiebor, Nosa Sweeney, James Zidek, Lisa Sechrist, Chalmers Hulbert, Sam Osborn, James O'Neill, Robert Florida Gulf Coast University United States FGCU School of Engineering Institute of Electrical and Electronics Engineers Biomedical Engineering Society American Institute for Medical and Biological Engineering United Kingdom Department of Environmental and Civil Engineering Arizona State University United States Department of Bioengineering Department of Bioengineering Arizona State University United States Flinn Foundation Funded Multi- and Interdisciplinary Graduate Training Program in Bioengineering Milwaukee School of Engineering United States Graduate Programs Industrial Engineering Program Department of Electrical and Computer Engineering Department of Engineering University of Illinois Urbana-Champaign United States Institute of Electrical and Electronics Engineers Rose-Hulman Institute for Technology School of Engineering FGCU School of Engineering's Advisory Board Roger Williams University United States Department of Civil Engineering Department of Engineering Roger Williams University United States

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Fabrication of a 40 MHz single element ultrasonic transducer using a PMN-PT single crystal

Fabrication of a 40 MHz single element ultrasonic transducer...

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作者： Paeng, Dong-Guk Kim, Hyung Ham Lee, Sang-Goo Rhim, Sung Min Choi, Min Joo Marine Industrial Engineering Cheju National University Jeju 690-756 Korea Republic of Interdisciplinary Postgraduate Program in Biomedical Engineering Cheju National University Jeju 690-756 Korea Republic of Department of Medicine Cheju National University Jeju 690-756 Korea Republic of Biomedical Engineering University of Southern California Los Angeles CA 90089-1451 United States IBULE Photonics Dongchun-dong 994-46 Yeonsu-gu Incheon 406-130 Korea Republic of HUMANSCAN 302 Siwha APT Factory Siwha Ind. Estate 5Ra 301 #672 Sunggok-dong Ansans-si Kyunggi-do 425-110 Korea Republic of

PMN-PT, a piezoelectric single crystal, has been known to be a better material for transducer arrays due to its high electromechanical coupling coefficient (k33) and high dielectric and piezoelectric constants. It may also be good even for high frequency single element transducers using relatively high kt and low attenuation and velocity dispersion. However, it's challenging to fabricate high frequency transducers using PMN-PT since it is easily breakable and requires small area and thickness of the transducer. A KLM model was used to simulate a 40 MHz single element transducer including 2 matching layers and a conductive backing. The simulation showed that the PMN-PT transducer turned out to be better in sensitivity and bandwidth than a 40 MHz LiNbO3 transducer. A 40 MHz PMN-29%PT transducer was fabricated and the pulse echo signals were obtained and analyzed. Its sensitivity was found to be -48 dB and -6dB bandwidth was about 48%.

关键词： Ultrasonic transducers

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MEMS and microsystems courses with national and international dissemination

MEMS and microsystems courses with national and internationa...

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113th Annual ASEE Conference and Exposition, 2006

作者： McAfee, Leo Najafi, Khalil Gianchandani, Yogesh Wise, Kensall D. Maharbiz, Michel M. Aslam, Dean Bergstrom, Paul Friedrich, Craig University of Michigan United States IEEE ASEE Department of Electrical Engineering and Computer Science University of Michigan United States MI United States WIMS ERC United States EECS Department College of Engineering Interdisciplinary Professional Degree Program in Integrated Microsystems Department of Electrical Engin-eering and Computer Science Department of Manufacturing Technology Department of Biomedical Engineering AIMBE United States United States National Academy of Engineering United States Electrical Engineering and Computer Science Chemical and Biomedical Engineering Departments University of Michigan Ann Arbor United States Wireless Integrated Microsystems NSF ERC National Nanotechnology Initiative Network Michigan State University United States Engineering Research Center for Wireless Integrated MicroSystems United States Michigan Technological University United States Michigan Technological University Houghton MI United States Microfabrication Facility Michigan Tech. United States

The Wireless Integrated MicroSystems (WIMS) engineering Research Center (ERC) has developed a broad comprehensive MEMS and microsystem curriculum suitable for upper-level undergraduate students, graduate students, and industry professionals. Five core courses were in the initial curriculum design. The design had flexibility that invited development of other core courses, as well as related technical electives and breadth electives. The core courses provide instruction in MEMS, Microsystems, major design and laboratory measurements, and societal impact. The course enrollments have been strong. A master of engineering in integrated microsystems degree program was developed so that industry professionals would have a focused set of coursework, while providing flexibility that would permit custom tailoring of the total course package to serve specific needs. Distance education dissemination of the courses as whole courses, or as discrete portions of course materials, was intended to be available;that goal has been realized. The core courses originate at the University of Michigan (UM), and have been distributed to Michigan State University (MSU), Michigan Technological University (MTU), Howard University (HU), University of Puerto Rico - Mayaguez (UPRM), and Western Michigan University (WMU). Rochester Institute of Technology (RIT) has used materials from the UM core courses in its offerings. Other institutions that have used the course web-streaming video and course materials are University of Lille, Darmstadt University, and Middle East Technical University. © American Society for engineering Education, 2006.

关键词： Curricula

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2282

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Ultrasound in Medicine & Biology 2006年第5期32卷 P146-P146页

作者： K.-H. Nam D.-G. Paeng M.J. Choi K.K. Shung Interdisciplinary Postgraduate Program in Biomedical Engineering Cheju National University Korea Marine Industrial Engineering Cheju National University Korea Biomedical Engineering Cheju National University Korea Biomedical Engineering University of Southern California United States of America

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Urine analysis in diluted situation using low-resolution Raman spectroscope

Urine analysis in diluted situation using low-resolution Ram...

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2005 27th Annual International Conference of the engineering in Medicine and Biology Society, IEEE-EMBS 2005

作者： Park, Cheol Soo Choi, Jong Min Park, Kwang Suk Interdisciplinary Program in Biomedical Engineering Seoul National University Department of Biomedical Engineering College of Medicine Seoul National University

ISBN: (纸本)0780387406

We could get valuable information about various diseases by analyzing urine of patients. For the diabetics, It has been very important to know the glucose concentration in their urine. Until now, there have been many methods to estimate the concentration but they were invasive and annoyed patients. The Low-Resolution Raman Spectroscopy (LRRS) could be an alternative method to be non-invasive and unconscious for patients who want to check the amount of their urine components. LRRS is not expensive and smaller than laboratory Raman spectroscope. And we want to attach it to the common toilet bowl. For the reason, we got the spectrum of diluted urine and predicted the glucose concentration. In addition, we tried to find very small amount of glucose. LRRS was adequate for measuring Raman signal of diluted urine and could find very small amount of glucose. This system will realize the observation of one's health condition every day without awareness. © 2005 IEEE.

关键词： Diagnosis

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