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作者： Morgan, Sarah Manning, Brian Addanki, Neelima Trubilla, Michael Howe, Steven D. King, Jeffrey C. Center for Space Nuclear Research 995 University Blvd. Idaho Falls ID 83402 United States Department of Astronautics 2304 Cadet Dr # 324 Air Force Academy CO 80840 United States Nuclear Science and Engineering Program Colorado School of Mines 1500 Illinois St. Golden CO 80401 United States

ISBN: (纸本)9781617828461

This paper studies the feasibility of a 10 kWe radioisotope-powered closed Brayton cycle for pulsed power station keeping applications. The study evaluates the specific power of the proposed system compared to current solar-photovoltaic systems. To achieve a high power pulse from a continuous low power input, a boron thermal capacitor surrounds a tungsten cermet matrix containing a radioisotope heat source which gradually adds heat to the thermal capacitor. During a power pulse this heat is removed by a HeXe coolant which expands through a closed Brayton conversion cycle to produce electric power for the spacecraft's ion thrusters. Since real time heat rejection is not necessary for a pulsed power system, a lithium thermal capacitor absorbs waste heat for the duration of the pulse, and radiates that heat to space between pulses.

关键词： Solar power generation

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Development of a neutron depth profiling facility for characterizing advanced reactor materials

Development of a neutron depth profiling facility for charac...

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2011 ANS Annual Meeting

作者： Turkoglu, Danyal J. Kandlakunta, Praneeth Mulligan, Padhraic L. Cao, Lei Zhang, Jinsuo Sang, Byun Thak Downing, R. Greg Nuclear Engineering Program Department of Mechanical and Aerospace Engineering Ohio State University Columbus OH United States Los Alamos National Laboratory Decision and Application Division Los AlamosNM United States Oak Ridge National Laboratory Materials Science and Technology Division Oak Ridge TN United States National Institute of Standards and Technology Gaithersburg MD United States

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Application of X-ray synchrotron microscopy instrumentation in biology

Application of X-ray synchrotron microscopy instrumentation ...

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2nd International Conference on Advancements in nuclear Instrumentation, Measurement Methods and their Applications, ANIMMA 2011

作者： Gasperini, F.M. Pereira, G.R. Granjeiro, J.M. Calasans-Maia, M.D. Rossi, A.M. Perez, C.A. Lopes, R.T. Lima, I. Medical Science Program Fluminense Federal University Niterói Brazil Department of Metallurgical and Materials Engineering Federal University of Rio de Janeiro Brazil Molecular and Cell Biology Department Fluminense Federal University Niterói Rio de Janeiro Brazil Oral Surgery Department Fluminense Federal University Niterói Rio de Janeiro Brazil Biomaterials Laboratory Brazilian Center of Physics Research Rio de Janeiro Brazil Brazilian Synchrotron Laboratory Campinas São Paulo Brazil Nuclear Engineering Laboratory Federal University of Rio de Janeiro Brazil

ISBN: (纸本)9781457709265

X-ray microfluorescence imaging technique has been used as a significant tool in order to investigate minerals contents in some kinds of materials. The aim of this study was to evaluate the elemental distribution of calcium and zinc in bone substitute materials (nanohydroxyapatite spheres) and cortical bones through X-Ray Microfluorescence analysis with the increment of Synchrotron Radiation in order to evaluate the characteristics of the newly formed bone and its interface, the preexisting bone and biomaterials by the arrangement of collagen fibers and its birefringence. The elemental mapping was carried out at Brazilian Synchrotron Light Laboratory, Campinas - Sao Paulo, Brazil working at D09-XRF beam line. Based on this study, the results suggest that hydroxyapatite-based biomaterials are biocompatible, promote osteoconduction and favored bone repair. © 2011 IEEE.

关键词： Bone

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Quantum Dots: Ultrasensitive, Biocompatible, Quantum‐Dot‐Embedded Silica Nanoparticles for Bioimaging (Adv. Funct. Mater. 9/2012)

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Advanced Functional Materials 2012年第9期22卷

作者： Bong‐Hyun Jun Do Won Hwang Heung Su Jung Jaeho Jang Hyunsoo Kim Homan Kang Taegyu Kang San Kyeong Hyeokjae Lee Dae Hong Jeong Keon Wook Kang Hyewon Youn Dong Soo Lee Yoon‐Sik Lee School of Chemical and Biological Engineering Seoul National University Seoul 151‐747 Korea Department of Nuclear Medicine Seoul National University College of Medicine Seoul 110‐744 Korea Institute of Radiation Medicine Medical Research Center Seoul 110‐744 Korea Nanosquare Inc. ENG BLD39‐122 Seoul National University Seoul 151‐747 Korea WCU Department of Molecular Medicine and Biopharmaceutical Sciences Graduate School of Convergence Science and Technology Seoul National University Seoul 151‐747 Korea Nano Systems Institute and Interdisciplinary Program in Nano‐Science and Technology Seoul National University Seoul 151‐747 Korea Department of Chemistry Education Seoul National University Seoul 151‐747 Korea Cancer Imaging Center Seoul National University Cancer Hospital Cancer Research Institute Seoul National University College of Medicine Seoul 110‐799 Korea

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The development of a Mobile Reading Assistance System Based on Chinese Words for students in elementary schools

The development of a Mobile Reading Assistance System Based ...

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18th International Conference on Computers in Education, ICCE 2010

作者： Su, Yen-Ning Wu, Benjamin Jenghorng Huang, Yueh-Min Department of Engineering Science National Cheng Kung University Tainan Taiwan Master Program of Technology Development Communication Department of Education National University of Tainan Taiwan

ISBN: (纸本)9789834251239

The aim of this study was to develop a Mobile Reading Assistance System Based on Chinese Words for students in elementary schools. This paper presents a system which is called Reading Assistance for the elementary school students to learn anytime and anywhere by using personal mobile devices (PDA) and the Wireless Network. In this system, instructors would be required to upload the text content to the system and instructors can view the learning record of students. On the other hand, learner can read the text content and learn Chinese words by using this system. To sum up, the characters of this system are easy reading, easy learning, easy conduct, and high supportive which support for student Assistance of Reading. In the future, researchers will use tests to assess the system.

关键词： Students

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Application of X-ray Synchrotron microscopy instrumentation in Biology

Application of X-ray Synchrotron microscopy instrumentation ...

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International Conference on Advancements in nuclear Instrumentation Measurement Methods and their Applications (ANIMMA)

作者： F. M. Gasperini G. R. Pereira J. M. Granjeiro M. D. Calasans-Maia A. M. Rossi C. A. Perez R. T. Lopes I. Lima Medical Science Program of Fluminense Federal University Niteroi Brazil Department of Metallurgical and Materials Engineering Federal University Rio de Janeiro Brazil Molecular and Cell Biology Department Fluminense Federal University Niteroi Rio de Janeiro Brazil Oral Surgery Department Fluminense Federal University Niteroi Rio de Janeiro Brazil Brazilian Center of Physics Research Biomaterials Laboratory Rio de Janeiro Brazil Brazilian Synchrotron Light Laboratory Campinas Sao Paulo Brazil Nuclear Engineering Laboratory Federal University of Rio de Janeiro Brazil

关键词： Bones Materials Zinc Calcium Nanobioscience Laboratories X-ray imaging

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Tour route planning multimedia system with particle swarm optimization designed

Tour route planning multimedia system with particle swarm op...

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作者： Chen, Ruey-Maw Yan, Ah-Taur Lin, Chung-Hsien Department of Computer Science and Information Engineering NCUT Taichung 41101 Taiwan Master Program of Landscape and Recreation Feng Chia University Taichung 40724 Taiwan

ISBN: (纸本)9788988678183

This work suggests an adaptive tour route planning multimedia system designed to meet the needs of different tourists. Tour route planning is a 'traveling salesman problem' (TSP) type problem. TSP is an example of a combinatorial optimization problem and is known as NP-hard. As studied by many researchers exact, heuristic (approximation) and metaheuristic algorithms are usually applied for NP problems. A promising meta-heuristic algorithm is proposed to solve the tour route planning problems which involves minimization of total traveling time, total travel expenses or the combined total traveling time and expenses. Moreover, a simple exchange local search heuristic is also applied to increase the exploitation (intensification) competence of the scheme. Restated, finding out the optimal planned tour using particle swarm optimization and increasing performance by exchange heuristic scheme is suggested. Simulation results indicate the PSO with exchange heuristic designed provides a promising strategy, and is efficient for solving tour route planning problems.

关键词： Traveling salesman problem

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An efficient ICA approach based on neural network framework for biomedical applications

An efficient ICA approach based on neural network framework ...

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2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010 - 2010 International Joint Conference on Neural Networks, IJCNN 2010

作者： Lin, Yue-Der Hsu, Chih-Yu Chen, Hung-Yun Tseng, Kuo-Kun Department of Automatic Control Engineering Master Program of Biomedical Informatics and Biomedical Engineering Feng Chia University Taichung Taiwan Department of Information and Communication Engineering Chaoyang University of Technology Wufeng Taichung County Taiwan Department of Automatic Control Engineering Feng Chia University Taichung Taiwan Department of Computer Science and Engineering HungKuang University Taichung Taiwan

ISBN: (纸本)9781424469178

The paper developed a block-wise approach for ICA algorithms which can improve the computational efficiency of ICA without the degradation of performance for the separation of biomedical signals. Source signals including electrocardiogram (ECG), electromyogram (EMG) and 60-Hz sinusoid are linearly mixed for experimental tests. The mean-square errors (MSE) between the original sources and the separated signals are calculated for the evaluation of separation performance. These results demonstrated that the proposed block-wise approach can achieve the desired separation performance of signals in a more efficient way. © 2010 IEEE.

关键词： Independent component analysis

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Energetic considerations on the dynamics of Hodgkin-Huxley neurons

Energetic considerations on the dynamics of Hodgkin-Huxley n...

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2010 6th International Conference on Natural Computation, ICNC'10

作者： Moujahid, Abdelmalik D'Anjou, Alicia Torrealdea, Francisco J. Torrealdea, Francisco Department of Computer Science University of Basque Country 20018 San Sebastian Spain Master Program Tissue Engineering University College London WC1E6BT United Kingdom

ISBN: (纸本)9781424459612

Neuron models are frequently used to represent the dynamics of real neurons but hardly ever to evaluate the electrochemical energy required to maintain that dynamics. This paper discusses the interpretation of a Hodgkin-Huxley circuit as an energy model for real biological neurons and studies the metabolic energy consumption for the generation of action potentials and the cost of signalling when neurons are coupled by electrical synapses. © 2010 IEEE.

关键词： Neurons

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Challenges in Advanced nanofiber wound dressings

Challenges in Advanced nanofiber wound dressings

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Fiber Society 2010 Fall Meeting and Technical Conference

作者： Shi, Quan McCord, Marian Bourham, Mohamed Zhang, Xiangwu Nawalakhe, Rupesh Vitchuli, Narendiran Nowak, Joshua Fiber and Polymer Science Program Department of Textile Engineering Chemistry and Science North Carolina State University RaleighNC27695-8301 United States Department of Nuclear Engineering North Carolina State University RaleighNC27695-7909 United States

Conventional textile-based wound dressings are cost-effective and highly absorbent, but used alone, fail to provide optimal wound healing conditions (hemostasis, non-adherence, maintenance of a moist wound bed, etc.). Modern wound dressings often incorporate multiple non-textile components (films, gels, antimicrobials, and biological forms) that provide advanced functionalities at a significantly higher cost. Electrospun nanofiber dressings have demonstrated the potential to revolutionize wound care by providing significantly enhanced moisture management, barrier properties, and bioactivity. However, nanofiber webs are inherently weak and difficult to handle. Deposition of electrospun nanofiber coatings on a conventional textile bandages addresses the need for structural support, but faces challenges of delamination due to compliance mismatch or poor adhesion. Atmospheric plasma has been shown to increase adhesion of coatings to fibers due to enhanced surface chemistry and/or morphology.

关键词： Textiles

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