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Glass microporous fiber/nanoporous polytetrafluoroethene composite membranes for high efficient phosphoric acid fuel cell

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Journal of Physics: Conference Series 2014年第1期557卷

作者： Chia-Lien Lu Wei-Jia Lee Cheng-Ping Chang Fan-Gang Tseng Department of Engineering and System Science National Tsing Hua University TAIWAN Interdisciplinary Program of Nuclear Science National Tsing Hua University TAIWAN Division of Mechanics Reschanics Researchnter for Applied Science Academia Sinica TAIWAN

This paper reports a high efficient phosphoric acid fuel cell by employing a micro/nano composite proton exchange membrane incorporating glass microfiber (GMF) sealed by polytetrafluoroethylene (PTFE) nano-porous film. This multilayer membrane not only possesses both thermal and chemical stability at phosphoric acid fuel cell working temperature at 150~220°C but also is cost effective. As a result, the inclusion of the high porosity and proton conductivity from glass microfiber and the prevention of phosphoric acid leakage from PTEF nano film can be achieved at the same *** composite membrane maximum proton conductivity achieves 0.71 S/cm at 150 °C from AC impedance analysis, much higher than common phosphoric acid porous membranes For single cell test, The GMF fuel cell provides a 63.6mW/cm2 power density at 200mA/cm2 current density while GMF plus methanol treated PTFE (GMF+mPTFE) provides 59.2mW/cm2 power density at 160mA/cm2 current density for hydrogen and oxygen supply at 150 °C. When we change the electrodes that are more suited for phosphoric acid fuel cell, the GMF+mPTFE single cell gets higher performance which achieve 296mW/cm2 power density at 900mA/cm2 current density for hydrogen and oxygen supply at 150 °C.

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Implementation of OpenMP and MPI hybrid parallelization to Monte Carlo dose simulation for particle therapy

Implementation of OpenMP and MPI hybrid parallelization to M...

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World Congress on Medical Physics and Biomedical engineering

作者： Furuta, T. Ishikawa, K.L. Fukunishi, N. Noda, S. Takagi, S. Maeyama, T. Fukasaku, K. Himeno, R. RIKEN Computational Science Research Program Wako Japan University of Tokyo Department of Nuclear Engineering and Management Graduate School of Engineering Tokyo Japan RIKEN Nishina Center for Accelerator-Based Science Wako Japan RIKEN Advanced Center for Computing and Communication Wako Japan University of Tokyo Department of Mechanical Engineering Tokyo Japan Himon'ya Hospital Department of Neurosurgery Tokyo Japan

ISBN: (纸本)9783642293047

We report a successful implementation of the sharedmemory parallelization using OpenMP to the dose calculation by the Monte Carlo particle and heavy-ion transport code PHITS. The OpenMP shared-memory parallelization is better suited than the MPI distributed-memory parallelization which is originally implemented in the PHITS code in the case of human voxel data which requires a large memory space. We have confirmed that the same results can be obtained with and without the shared-memory parallelization by the modified PHITS code. Sufficiently high OpenMP parallelization efficiency (92.4% with 8 parallelized cores within a single node) is achieved even when the special treatment for accessing memory to avoid memory contentions is taken into account. We implement the OpenMP parallelization on top of the MPI parallelization originally included in PHITS so that the modified code works in a hybrid way such that the distributed-memory parallelization for different nodes by MPI and the shared-memory parallelization among the cores in a single node by OpenMP. The performance has been checked on supercomputers: RICC and K computer. © 2013 Springer-Verlag.

关键词： Supercomputers

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Aspect ratio effect of bioreactor on fermentative hydrogen production with immobilized sludge

Aspect ratio effect of bioreactor on fermentative hydrogen p...

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作者： Wu, Shu-Yii Chu, Chen-Yeon Yeh, Wei-Zhi Green Energy Development Center Feng Chia University Taichung 40724 Taiwan Department of Chemical Engineering Feng Chia University Taichung 40724 Taiwan Master's Program of Green Energy Science and Technology Feng Chia University Taichung 40724 Taiwan

The phenomenon of bacterial wash-out frequently occurs in the traditional continuous stirred tank reactor (CSTR) systems at low hydraulic retention time (HRT). In this study, the effect of different aspect ratios, height (H) to diameter (D) of 1:1, 3:1 and 5:1, of a CSTR with immobilized anaerobic sludge on hydrogen (H2) production were investigated. The pH, volatile suspended solids (VSS) and total solids (TS) concentrations of the seed sludge were 6.8, 33.3 and 65.1 g/L, respectively. Thermally treated sludge was immobilized by silicone gel entrapment approach. The entrapped-sludge system operated stably at a low HRT without suffering from cell wash-out. Hence, the hydrogen production rate (HPR) was enhanced by increasing organic loading rates. The immobilized sludge CSTRs were operated at 40 °C with sucrose (10, 20, 30 and 40 g COD/L) and Endo nutrient medium at different HRTs (4, 2, 1 and 0.5 h). It was found that the granule formation enhanced HPR. The maximum HPR and the H2 yield were found to be 15.36H2 L/h/L and 3.16 mol H2/mol sucrose, respectively, with the H2 content in the biogas above 44% for all tests runs. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Hydrogen production

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Diffusion suppression in gel dosimetry by addition of nanoclay

Diffusion suppression in gel dosimetry by addition of nanocl...

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World Congress on Medical Physics and Biomedical engineering

作者： Maeyama, T. Fukunishi, N. Ishikawa, K.L. Fukasaku, K. Furuta, T. Takagi, S. Noda, S. Himeno, R. RIKEN Nishina Center for Accelerator-Based Science Wako Japan RIKEN Computational Science Research Program Wako Japan University of Tokyo Department of Nuclear Engineering and Management Graduate School of Engineering Tokyo Japan University of Tokyo Photon Science Center Graduate School of Engineering Tokyo Japan Himon'ya Hospital Department of Neurosurgery Tokyo Japan University of Tokyo Department of Mechanical Engineering Graduate School of Engineering Tokyo Japan RIKEN Advanced Center for Computing and Communication Wako Japan

ISBN: (纸本)9783642293047

This paper reports diffusion suppression in gel dosimetery by using nanocomposite gel. A Fricke xylenol gel (FXG) and a dichromate gel (DCG) were selected for adding a small amount of nanoclay (Laponite XLG). The diffusion coefficient and T1 distribution were evaluated by irradiating the gel dosimeter with a heavy ion beam. As a result, these gels showed improvement in the diffusion coefficient. In particular, by addition of the clay, the DCG exhibited diffusion-free characteristics. Moreover, it exhibited high stability after irradiation. © 2013 Springer-Verlag.

关键词： Nanocomposites

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Risk-informed resolution of Generic Safety Issue 191

Risk-informed resolution of Generic Safety Issue 191

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International Topical Meeting on Probabilistic Safety Assessment and Analysis 2013, PSA 2013

作者： Mohaghegh, Zahra Kee, Ernie Reihani, Seyed A. Kazemi, Reza Johnson, David Grantom, Rick Fleming, Karl Sande, Tim Letellier, Bruce Zigler, Gilbert Morton, David Tejada, Jeremy Howe, Kerry Leavitt, Janet Hassan, Yassin A. Vaghetto, Rodolfo Lee, Saya Blossom, Steve Department of Nuclear Plasma and Radiological Engineering University of Illinois at Urbana-Champaign United States South Texas Project Nuclear Operating Company United States Soteria Consultants LLC United States ABS Consulting United States Knf Consulting Services LLC United States Enercon Services Inc. Germany Alion Science and Technology United States Graduate Program in Operations Research and Industrial Engineering University of Texas at Austin United States Civil Engineering Department University of New Mexico United States Department of Nuclear Engineering Texas A and M University United States

ISBN: (纸本)9781629938172

The United States nuclear Regulatory Commission (USNRC) relies on Probabilistic Risk Assessment (PRA) as one of the main pillars of its risk-informed regulatory and oversight functions. In 2011, the South Texas Project nuclear Operating Company (STPNOC) initiated a risk-informed project to resolve Generic Safety Issue 191 (GSI-191), which is related to the performance of the emergency core cooling system (ECCS) following a loss of coolant accident (LOCA). This paper summarizes the results of collaborative work on this project by teams of experts from industry and academia. The progress of the research and its implementation have also significantly benefitted from the discussions and feedback received from regulatory representatives. An integrative framework was developed to explicitly provide failure probabilities for the post-LOCA PRA basic events associated with the concerns raised in GSI-191. These basic event probabilities are estimated using the CASA Grande program, which was developed as part of the project. This program encompasses the time-dependent modeling of the underlying physical phenomena of the basic events and the propagation of the uncertainties in the physical models. This paper summarizes the elements of the integrative framework including PRA and the CASA Grande program, as well as the input parameters, assumptions, methodology, and results of the STPNOC analysis. The results show that the risk of core damage or large early release related to the concerns raised in GSI-191 in the as-built, as-operated design for STPNOC is very small (as defined in Regulatory Guide 1.174).

关键词： Loss of coolant accidents

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Simulation and analytical form of the molten salt alpha-particle spectrum

Simulation and analytical form of the molten salt alpha-part...

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2013 ANS Annual Meeting - Next Generation nuclear Energy: Prospects and Challenges

作者： Garcia, Timothy R. Reinke, Benjamin Kumar, Ashutosh Windl, Wolfgang Blue, Thomas E. Nuclear Engineering Program Ohio State University 201 W. 19th Ave. Columbus OH 43210 United States Materials Science and Engineering Department Ohio State University 2041 College Rd. Columbus OH 43210 United States

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The structure and ferroelectric property of La-doped BiFeO 3/SrTiO3 artificial superlattice structure by rf sputtering: Effect of deposition temperature

The structure and ferroelectric property of La-doped BiFeO 3...

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作者： Chiu, Shang-Jui Liu, Yen-Ting Yu, Ge-Ping Lee, Hsin-Yi Huang, Jia-Hong Department of Engineering and System Science National Tsing Hua University Hsinchu 30013 Taiwan National Synchrotron Radiation Research Center Hsinchu Science Park 101 Hsin-Ann Road Hsinchu 30076 Taiwan Program for Science and Technology of Accelerator Light Source National Chiao Tung University Hsinchu 300 Taiwan Institute of Nuclear Engineering and Science National Tsing Hua University Hsinchu 30013 Taiwan

Improvement of ferroelectric property by Lanthanum (La)-doping of BiFeO3 (BFO) and strain effect of high quality superlattice films deposited at temperature â‰§ 700 C was shown in this study. The in-pane (200) radial scans showed that films at deposition temperature above 700 C behaved high strained ∼-1.4% and showed epitaxity properties. The La-doped BFO superlattice structure also behaved higher polarization value ∼ 197 μC/cm2 and lower leakage current density comparing with BFO superlattice structure shown in our previous study. The ferroelectric properties of superlattice structures are enhanced by lattice strain and strongly correlated with the defect state of films. © 2012 Elsevier B.V.

关键词： Semiconductor doping

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Roles of organic acids during exectrooxidation reaction over Pt-supported carbon electrodes in direct methanol fuel cells

Roles of organic acids during exectrooxidation reaction over...

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作者： Wong, Chee Yong Chen, Shi-Kun Lo, An-Ya Tseng, Chuan-Ming Lin, Chiu-Yue Liu, Shang-Bin Department of Materials Science and Engineering Fong Chia University Taichung 40724 Taiwan Green Energy Development Center and Master's Program of Green Energy Science and Technology Fong Chia University Taichung 40724 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan Department of Chemistry National Taiwan Normal University Taipei 11677 Taiwan

A comprehensive study has been made to explore the role of organic acids on electrocatalytic performances of platinum (Pt) nanoparticles supported on carbon porous materials (CPMs) in proton exchange membrane fuel cells (PEMFCs). In particular, the effects of carboxylic acids (R-COOH), viz. formic acid, acetic acid, propionic acid, and butyric acid on catalytic activity, stability, and durability of anodic Pt/CPM electrocatalyst in direct methanol fuel cells (DMFCs) were investigated. In the presence of doped carboxylic acids, the electrooxidative activity of Pt/CPM follows the trend: HCOOH 3COOH 2H5COOH 3H 7COOH, revealing a consistent increase in the severity of catalyst deactivation with the number of carbons on the alkyl chain of the dopant. The Pt/CPM was found to exhibit electrocatalytic performances and tolerance for poisoning than a commercial Pt/XC-72 catalyst with a similar Pt loading (20 wt%). Moreover, a notable increase in mass activity up to ca. 150% over the spent Pt/CPM catalyst was observed up on removing the organic acid in the feed stream, indicating that catalyst poisoning by deactivation may be revived, even to its "intrinsic" activity. © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

关键词： Electrocatalysts

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Human genome meeting 2016 : Houston, TX, USA. 28 February - 2 March 2016

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Human genomics 2016年第1期10 Suppl 1卷 12页

作者： A. K. Srivastava Y. Wang R. Huang C. Skinner T. Thompson L. Pollard T. Wood F. Luo R. Stevenson R. Polimanti J. Gelernter X. Lin I. Y. Lim Y. Wu A. L. Teh L. Chen I. M. Aris S. E. Soh M. T. Tint J. L. MacIsaac F. Yap K. Kwek S. M. Saw M. S. Kobor M. J. Meaney K. M. Godfrey Y. S. Chong J. D. Holbrook Y. S. Lee P. D. Gluckman N. Karnani A. Kapoor D. Lee A. Chakravarti C. Maercker F. Graf M. Boutros G. Stamoulis F. Santoni P. Makrythanasis A. Letourneau M. Guipponi N. Panousis M. Garieri P. Ribaux E. Falconnet C. Borel S. E. Antonarakis S. Kumar J. Curran J. Blangero S. Chatterjee J. Akiyama D. Auer C. Berrios L. Pennacchio T. R. Donti G. Cappuccio M. Miller P. Atwal A. Kennedy A. Cardon C. Bacino L. Emrick J. Hertecant F. Baumer B. Porter M. Bainbridge P. Bonnen B. Graham R. Sutton Q. Sun S. Elsea Z. Hu P. Wang Y. Zhu J. Zhao M. Xiong David A. Bennett A. Hidalgo-Miranda S. Romero-Cordoba S. Rodriguez-Cuevas R. Rebollar-Vega E. Tagliabue M. Iorio E. D’Ippolito S. Baroni B. Kaczkowski Y. Tanaka H. Kawaji A. Sandelin R. Andersson M. Itoh T. Lassmann Y. Hayashizaki P. Carninci A. R. R. Forrest C. A. Semple E. A. Rosenthal B. Shirts L. Amendola C. Gallego M. Horike-Pyne A. Burt P. Robertson P. Beyers C. Nefcy D. Veenstra F. Hisama R. Bennett M. Dorschner D. Nickerson J. Smith K. Patterson D. Crosslin R. Nassir N. Zubair T. Harrison U. Peters G. Jarvik F. Menghi K. Inaki X. Woo P. Kumar K. Grzeda A. Malhotra H. Kim D. Ucar P. Shreckengast K. Karuturi J. Keck J. Chuang E. T. Liu B. Ji A. Tyler G. Ananda G. Carter H. Nikbakht M. Montagne M. Zeinieh A. Harutyunyan M. Mcconechy N. Jabado P. Lavigne J. Majewski J. B. Goldstein M. Overman G. Varadhachary R. Shroff R. Wolff M. Javle A. Futreal D. Fogelman L. Bravo W. Fajardo H. Gomez C. Castaneda C. Rolfo J. A. Pinto K. C. Akdemir L. Chin S. Patterson C. Statz S. Mockus S. N. Nikolaev X. I. Bonilla L. Parmentier B. King F. Bezrukov G. Kaya V. Zoete V. Seplyarskiy H. Sharpe T. McKee K. Popadin N. Basset-Seguin R. Ben Chaabene M. Andrianova C. Verdan K. Grosdemange O. Sumara M. E JCSRI Greenwood Genetic Center Greenwood USA School of Computing Clemson University Clemson USA Biochemical Genetics Laboratory Greenwood Genetic Center Greenwood USA Department Psychiatry Yale Sch Med and VA CT Healthcare Center West Haven USA Department Genetics Yale Sch Med and VA CT Healthcare Center West Haven USA Department Neurobiology Yale Sch Med and VA CT Healthcare Center West Haven USA Singapore Institute for Clinical Sciences Singapore Singapore National University of Singapore Singapore Singapore University of British Columbia Vancouver Canada KK Women’s and Children’s Hospital Singapore Singapore University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton UK University of Auckland Auckland New Zealand McKusick-Nathans Institute of Genetic Medicine Johns Hopkins University School of Medicine Baltimore USA Esslingen University of Applied Sciences Esslingen Germany German Cancer Research Center Heidelberg Germany Department of Genetic Medicine and Development University of Geneva Medical School Geneva Switzerland Geneva University Hospitals-HUG Service of Genetic Medicine Geneva Switzerland GE3 Institute of Genetics and Genomics of Geneva University of Geneva Medical School Geneva Switzerland South Texas Diabetes and Obesity Institute School of Medicine University of Texas Rio-Grande Valley Edinburg USA South Texas Diabetes and Obesity Institute School of Medicine University of Texas Rio-Grande Valley Brownsville USA Institute of Genetic Medicine Johns Hopkins University Baltimore USA Genomics Division Lawrence Berkeley National Laboratory Berkeley USA Molecular and Human Genetics Baylor College of Medicine Houston USA Department of Translational Medical Sciences Federico II University Naples Italy Metabolon Inc Durham USA Section of Pediatric Neurology and Neuroscience Baylor College of Medicine Houston USA Tawam Hospital Abu Dhabi United Arab Emirates Stanford Medical School Stanford USA Sch

O1 The metabolomics approach to autism: identification of biomarkers for early detection of autism spectrum disorder A. K. Srivastava, Y. Wang, R. Huang, C. Skinner, T. Thompson, L. Pollard, T. Wood, F. Luo, R. Stevenson O2 Phenome-wide association study for smoking- and drinking-associated genes in 26,394 American women with African, Asian, European, and Hispanic descents R. Polimanti, J. Gelernter O3 Effects of prenatal environment, genotype and DNA methylation on birth weight and subsequent postnatal outcomes: findings from GUSTO, an Asian birth cohort X. Lin, I. Y. Lim, Y. Wu, A. L. Teh, L. Chen, I. M. Aris, S. E. Soh, M. T. Tint, J. L. MacIsaac, F. Yap, K. Kwek, S. M. Saw, M. S. Kobor, M. J. Meaney, K. M. Godfrey, Y. S. Chong, J. D. Holbrook, Y. S. Lee, P. D. Gluckman, N. Karnani, GUSTO study group O4 High-throughput identification of specific qt interval modulating enhancers at the SCN5A locus A. Kapoor, D. Lee, A. Chakravarti O5 Identification of extracellular matrix components inducing cancer cell migration in the supernatant of cultivated mesenchymal stem cells C. Maercker, F. Graf, M. Boutros O6 Single cell allele specific expression (ASE) IN T21 and common trisomies: a novel approach to understand DOWN syndrome and other aneuploidies G. Stamoulis, F. Santoni, P. Makrythanasis, A. Letourneau, M. Guipponi, N. Panousis, M. Garieri, P. Ribaux, E. Falconnet, C. Borel, S. E. Antonarakis O7 Role of microRNA in LCL to IPSC reprogramming S. Kumar, J. Curran, J. Blangero O8 Multiple enhancer variants disrupt gene regulatory network in Hirschsprung disease S. Chatterjee, A. Kapoor, J. Akiyama, D. Auer, C. Berrios, L. Pennacchio, A. Chakravarti O9 Metabolomic profiling for the diagnosis of neurometabolic disorders T. R. Donti, G. Cappuccio, M. Miller, P. Atwal, A. Kennedy, A. Cardon, C. Bacino, L. Emrick, J. Hertecant, F. Baumer, B. Porter, M. Bainbridge, P. Bonnen, B. Graham, R. Sutton, Q. Sun, S. Elsea O10 A novel causal methylation network approach to Alzheimer’s

关键词： Pulmonary Arterial Hypertension Oral Squamous Cell Carcinoma Deep Neural Network Autosomal Recessive Polycystic Kidney Disease Whole Genome Bisulfite Sequencing

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nuclear cardiology image enhancement using wavelet transform analysis

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Physica Medica 2014年 30卷 e30-e30页

作者： A. Poulakis S. Angelakis G. Fountos G.S. Panagiotakis I. Asteriadis I. Valais Department of Biomedical Engineering Technological Educational Institute of Athens 12210 Athens Greece Biomedical Informatics and Technology Graduate Program School of Computer Science University of Crete Department of Medical Physics Medical School University of Patras 265 00 Patras Greece Department of Nuclear Medicine General Hospital of Kavala 65 500 Kavala Greece

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