检索结果-内蒙古大学图书馆

2007 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： Fumihito Arai Toshiaki Endo Hisataka Maruyama Toshio Fukuda Toshimi Shimizu Shoko Kamiya Department of Bioengineering and Robotics University of Tohoku Sendai Japan Department of Micro-Nano Systems Engineering University of Nagoya Nagoya Japan Nanoarchitectonics Research Center AIST Tsukuba Japan

We developed a novel technique to manipulate lipid nanotubes in 3D by laser tweezers in water solutions. Laser tweezers are well known as one of the noncontact manipulation methods used in a closed space. We reported on 3D 6DOF manipulation of microbeads using 3D Synchronized Laser Micromanipulation (SLM), however, the blur is generated in the microscope image when multiple points at different height are trapped by scanning the focal point of laser. Moreover, it is difficult to manipulate a nano scaled rod-like object stably in 3D, since optical trap force is weak. To manipulate a lipid nanotube for example, firstly, we newly developed an observation system to improve blur of image by synchronization of shutter timing of CCD camera and laser scanning. As a result, we can obtain a clear image of the targets at different height while manipulating them. Secondly, we developed functional gel microtools which can adhere to the lipid nanotubes. We succeeded in controlling the position and orientation of the lipid nanotubes by using 3D SLM with shutter timing control method and novel functional gel microtools.

关键词： Lipidomics Nanotubes Timing Transportation Microscopy Charge carrier processes Charge coupled devices Charge-coupled image sensors Agriculture Semiconductor device measurement

来源：评论

学校读者我要写书评

暂无评论

Closed loop glucose control in critical care patients: Previous study for clinical essays

Closed loop glucose control in critical care patients: Previ...

引用

IEEE/EMBS International Summer School on Medical Devices and Biosensors

作者： Oliveros V. Alexandra Josep Vehi Alfredo Gutierrez Winston Garcia-Gabin Department of Electrical Engineering. Universidad del Norte in Barranquilla Colombia Department of Electrical Engineering. Universidad del Norte in Barranquilla Barranquilla Colombia Intelligent Systems & Control Engineering group at the Department of Electronics Informatics and Automatics Universitat de Girona Girona Spain Department of Electronics Intelligent Systems & Control Engineering Girona Spain Department of Electrical Engineering and researcher of the Robotics and Intelligent Systems Universidad del Norte Barranquilla Colombia Department of Electrical Engineering Robotics and Intelligent Systems Baffanquilla Colombia

The feasibility of the design of a closed loop system to control glucose levels in critical care patients is presented in this paper. Considering the basic elements for its construction: The plasma glucose detection using a subcutaneous sensor and a Kalman filter, the model of glucose metabolism, and having special consideration in the method to calculate the optimal insulin infusion designing classical control schemes (PID and PI) and a GPC (predictive controller).

关键词： Sugar Medical control systems Control systems Plasma measurements Insulin Optimal control Intelligent robots Plasma simulation Blood Intelligent systems

来源：评论

学校读者我要写书评

暂无评论

Fabrication of Cell-Adhesion Surface and Capillary Vessel Model by Photolithography

Fabrication of Cell-Adhesion Surface and Capillary Vessel Mo...

引用

International Symposium on Micromechatronics and Human Science (MHS)

作者： Takuma Nakano Mika Tada Yu-Ching Lin Seiichi Ikeda Tomoyuki Uchida Hiroyuki Oura Toshio Fukuda Takehisa Matsuda Makoto Negoro Fumihito Arai Department of Bioengineering and Robotics University of Tohoku Sendai Japan Department of Micro-Nano Systems Engineering University of Nagoya Nagoya Japan Kanazawa Institute of Technology Nonoichi Japan Fujita Health University Toyoake Japan

We have been developing scaffolds of three-dimensional (3D) synthetic vascular prosthesis in tailor-made. Human umbilical vein endothelial cells (HUVECs) attached on the inner surface of the scaffold have anticoagulant effects. Asperity structures of the inner surface are important to cell adhesion. It is important to quantify the inner surface asperity condition of the scaffold by observing HUVECs behavior and morphology. For this purpose, we recreated the inner surface profile of the scaffold on a poly(dimethilsiloxane) (PDMS) substrate by microfabrication. We made semiround convex patterns of resist that had 8 μm in diameter and 5 μm high using photolithography, and the concave pattern on the PDMS substrate by printing. We observed HUVECs adhering to the PDMS substrate having concave pattern on it surface. The distribution density of the concaves of the tested pattern is 1600 /mm 2 or 40,000 in a 25 mm 2 area. In addition, we fabricated a capillary vessel model by photolithography, creating a branched capillary tube model that had 13 μm in diameter. We confirmed that the capillary vessel model had no leakage using a methylene blue solution flow in the channel.

关键词： Fabrication Lithography Surface morphology Prosthetics Humans Veins Adhesives Resists Printing Testing

来源：评论

学校读者我要写书评

暂无评论

Fluorescence Visualization of Carbon Nanotubes Using Quenching Effect for Nanomanipulation

Fluorescence Visualization of Carbon Nanotubes Using Quenchi...

引用

IEEE International Conference on Nano/Micro Engineered and Molecular systems (NEMS)

作者： Fumihito Arai Moeto Nagai Akio Shimizu Akihiko Ishijima Toshio Fukuda Department of Bioengineering and Robotics University of Tohoku Japan Department of Micro-Nano Systems Engineering University of Nagoya Japan Department of Applied Physics University of Nagoya Japan Institute of Multidisciplinary Researchfor Advanced Materials University of Tohoku Japan

The paper demonstrates visualization method of carbon nanotubes (CNTs) in water with fluorescent microscopy through quenching effect that cause a decrease of fluorescent intensity around CNTs. Reversal contrast in fluorescence imaging of the CNTs was observed in fluorescent dye solution. CNTs under a constant excitation light could be observed for more than ten minutes. Dielectrophoretic force was used for CNTs deposition onto electrodes that consist of transparent conductive film. Scanning electron microscope revealed that CNTs of 80 nm in diameter were observed with fluorescent microscopy. The positions of the CNTs tips were observed under optical microscope. It can be applied for biological sensing devices with nanomanipulation.

关键词： Fluorescence Visualization Carbon nanotubes Nanobioscience Scanning electron microscopy Optical microscopy Optical imaging Dielectrophoresis Electrodes Conductive films

来源：评论

学校读者我要写书评

暂无评论

Photoelastic Stress Analysis on Patient-Specific Anatomical Model of Cerebral Artery

Photoelastic Stress Analysis on Patient-Specific Anatomical ...

引用

International Symposium on Micromechatronics and Human Science (MHS)

作者： Yuta Okada Seiichi Ikeda Toshio Fukuda Fumihito Arai Makoto Negoro Ikuo Takahashi Department of Micro-Nano Systems Engineering University of Nagoya Nagoya Japan Department of Bioengineering and Robotics University of Tohoku Sendai Japan Department of Neurological Surgery Fujita Health University Toyoake Aichi Japan Department of Neurological Surgery Anjo Kosei Hospital Anjo Aichi Japan

In this paper, we propose a novel method to develop biomimetic models using polyurethane elastomer, which has high photoelastic coefficient, and a method to analyze stress states on the model by photoelastic effect. By using this method, stress condition on vascular wall is clearly visualized on vascular fringe as rainbow-colored photoelastic pattern, and stress can be quantitatively measured from that pattern. Ideally, retardation and path length of transmitted light through the polyurethane model should be observed for photoelastic analysis. Our method has capability to observe these two parameters simultaneously. Retardation and path length were determined from RGB value of rainbow-colored photoelastic stress pattern and permeability of light, respectively. The accuracy of stress analysis was evaluated by tensile test using cylindrical polyurethane models. 5.73% error was found in the result of photoelastic stress analysis. Lastly using the model produced by new method, we could analyze stress states quantitatively on the model of cerebral artery. Consequently, our method should be valuable for not only surgical simulations but also hemodynamic studies and pathological studies.

关键词： Photoelasticity Arteries Tensile stress Biomimetics Visualization Stress measurement Permeability Testing Surgery Hemodynamics

来源：评论

学校读者我要写书评

暂无评论

IMPROVED CONTINUATION METHOD CONTROLLER FOR PWM systems: AN EXPERIMENTAL CASE STUDY

引用

Asian Journal of Control 2008年第1期1卷

作者： T. Iwata M. Yamakita K. Furuta Dept. of Mechanical and Environment Informatics Tokyo Institute of Technology. Takaaki Iwata received the BE degrees in Mechanical Engineering in 1990 from Waseda University Japan. From 1990 to 1996 he jointed NOK Co. Ltd. In 1996 he received his ME degrees in Mechanical and Environmental Informatics from Tokyo Institute of Technology. He is currently a PhD student of Tokyo Institute of Technology. He is a member of SICE RSJ JSME and IEEE. Dept. of Control and Systems Engineering Tokyo Institute of Technology. Masaki Yamakita received Be ME and PhD from Tokyo Institute of Technology in 1984 1986 and 1989 respectively. From 1989 he was a Research Associate in the Department of Control Engineering of Tokyo Institute of Technology and from 1993 he was a Lecturer at Tokyohashi University of Technology. He is currently an Associate Professor in the Department of Control and Systems Engineering of Tokyo Institute of Technology. His research interests include robotics learning control robust control and non-linear control. Katsuhisa Furuta was born in Tokyo Japan in 1940. He received his B.S. M.S. and Ph.D. degrees in Chemical Engineering from Tokyo Institute of Technology in 1962 1964 and 1967 respectively. Since 1967 he has been a teaching staff of Tokyo Institute of Technology where he is currently a Professor of Graduate School of Information Science and Engineering. He is a fellow of IEEE and SICE. He is now a member of Science Council of Japan the secretary of the engineering division a council member of IFAC and the President of SICE in 1999.

In this paper, an improved version of online continuation method controller for PWM systems is presented. The online continuation method controller solves the PWM-type deadbeat control problem numerically. By using this algorithm, iterations for solving the set of nonlinear equations always start from a good solution candidate and therefore it can be used online. The original continuation method is modified so that it is applicable to real systems. The validity of the proposed control method is demonstrated by a laboratory-scale flexible arm manipulator.

关键词： PWM continuation method homotopy deadbeat GPC

来源：评论

学校读者我要写书评

暂无评论

A novel modular climbing caterpillar using low-frequency vibrating passive suckers

A novel modular climbing caterpillar using low-frequency vib...

引用

IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： H. X. Zhang J. Gonzalez-Gomez S.Y. Chen W. Wang R. Liu D. Li J. W. Zhang Institute of Technical Aspects of Multimodal Systems Department of Computer Science University of Hamburg Hamburg Germany School of Engineering Universidad Autonoma de Madrid Spain Department of Informatics University of Hamburg Germany College of Information Engineering Zhejiang University of Technology Hangzhou China Robotics Institute School of Mechanical Engineering and Automation Beijing Aeronautics and Astronautics University Beijing China

This paper presents a novel modular climbing caterpillar named ZC-I. After a related survey on the topic, a systematical summarizing on basic functions provided by this system is given. ZC-I features fast-building mechanical structure and low-frequency vibrating passive attachment principle. Active joints actuated by RC servos endow the connecting modules with the ability of changing shapes in two dimensions. After that the discussion focuses on the various locomotion capabilities. Linear movement, turning movement, lateral movement, rotating and rolling movement are achieved based on an inspired control model to produce rhythmic motion. In the end a conclusion and future work are given.

关键词： Climbing robots Prototypes Kinematics Servomechanisms Joining processes Shape Adhesives Electromagnetic forces Electromagnets Mobile robots

来源：评论

学校读者我要写书评

暂无评论

On-chip pH sensing with gel microbead positioned by optical tweezers

On-chip pH sensing with gel microbead positioned by optical ...

引用

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

作者： Maruyama, Hisataka Arai, Fumihito Fukuda, Toshio Department of Micro-Nano Systems Engineering Nagoya University Japan Department of Bioengineering and Robotics Tohoku University Japan

A local pH sensing method in a microchip using a functional gel-tool was developed. We used salting-out gel-tools impregnated with Bromothymol Blue (BTB), which is a pH indicator. The gel-tool is made of ENT-3400, which is hydrophilic photocrosslinkable resin [1]. The primary constituent of ENT-3400 is polyethyleneglycol (PEG). A solution mixed with ENT-3400, BTB, high concentrations of electrolytic solution are stirred, and gel beads impregnated with BTB are obtained. Gel-tools are cured by UV-ray and adhere to the glass, but we can manipulate them by the optical tweezers. We can measure pH value locally from the color of gel-tool using calibrated color information in YCrCb color space. We succeeded in measuring local pH value with the pH sensing gel-tool by manipulating and locating it at the desired point in the microchip. © 2006 Society for Chemistry and Micro-Nano systems.

关键词： Microprocessor chips

来源：评论

学校读者我要写书评

暂无评论

3D manipulation of lipid nanotubes with photo-crosslinkable gel micro-beads for nano-assenbly

3D manipulation of lipid nanotubes with photo-crosslinkable ...

引用

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

作者： Arai, Fumihito Endo, Toshiaki Yamuchi, Ryuji Fukuda, Toshio Shimizu, Toshimi Kamiya, Shoko Department of Bioengineering and Robotics Tohoku University Japan Department of Micro-Nano Systems Engineering Nagoya University Japan Nanoarchitectonics Research Center AIST Japan

It is suitable to use a micro to nano scaled object as a tool for measurement of cell and local environmental control around it. However, it is difficult to manipulate a nano scaled object stably using optical tweezers. Therefore, we aim to develop 3D manipulation technique that can manipulate several nanometer scale objects with different shapes. We developed a novel technique to handle lipid nanotubes by optical tweezers in water solutions. We succeeded in controlling the position and orientation of a lipid nanotube by using 3D Synchronized Laser Micromanipulation and novel functional gel-microtools. © 2006 Society for Chemistry and Micro-Nano systems.

关键词： Yarn

来源：评论

学校读者我要写书评

暂无评论

Model Driven engineering Languages and systems 2006

引用

丛书名： Lecture Notes in Computer Science

2006年

作者： Oscar Nierstrasz Jon Whittle David Harel Gianna Reggio

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：