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Microscopic observation of shear-mode fatigue crack growth behavior under the condition of continuous hydrogen-charging

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Journal of Physics: Conference Series 2017年第1期843卷

作者： Y Akaki T Matsuo Y Nishimura S Miyakawa M Endo Graduate School of Engineering Fukuoka University 8-19-1 Nanakuma Jonan-ku Fukuoka 814-0180 Japan Development of Mechanical Engineering Fukuoka University 8-19-1 Nanakuma Jonan-ku Fukuoka 814-0180 Japan Institute of Materials Science and Technology Fukuoka University 8-19-1 Nanakuma Jonan-ku Fukuoka 814-0180 Japan Materials Engineering R&D Division DENSO CORPORATION Japan 1-1 Syowa-cho Kariya Aichi 448-8661 Japan

rolling bearings facilitate the smooth motion of moving mechanical transmission devices substantially reducing the energy loss. However, flaking failure caused in bearings by rolling contact fatigue can crucially deteriorate the integrity of an overall mechanical system composed using bearings. It is understood nowadays that this phenomenon is intimately associated with shear-mode (Mode II and III) fatigue crack growth caused by cyclic shear stress in the presence of large compression. Further, a problem has become of importance that the premature flaking in ball bearings could be caused by the assistance of the penetration of hydrogen into material during the operation. In this study, torsional fatigue test of a bearing steel (JIS SUJ2) was performed by using a newly-developed method of continuous hydrogen-charging. Based on the microscopic observation, it was found that continuous hydrogen-charging had an influence on the shear-mode fatigue crack growth behavior in the high-cycle fatigue regime and reduced the threshold level.

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dengue epidemiology and pathogenesis:images of the future viewed through a mirror of the past

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Virologica Sinica 2015年第5期30卷 326-343页

作者： rashedul Islam Mohammed Salahuddin Md.Salahuddin Ayubi Tahmina Hossain Apurba Majumder Andrew W.Taylor-robinson Abdullah Mahmud-Al-rafat Bio-Resources Technology and Industrial Biotechnology Laboratory Department of Biotechnology and Genetic EngineeringJahangirnagar University Biotechnology and Genetic Engineering Discipline Khulna University School of Medical & Applied Sciences Central Queensland University Research and Development (R&D) Department Incepta Vaccine Limited

Every year, millions of individuals throughout the world are seriously affected by dengue virus. The unavailability of a vaccine and of anti-viral drugs has made this mosquito-borne disease a serious health concern. Not only does dengue cause fatalities but it also has a profoundly negative economic impact. In recent decades, extensive research has been performed on epidemiology, vector biology, life cycle, pathogenesis, vaccine development and prevention. Although dengue research is still not at a stage to suggest definite hopes of a cure, encouraging significant advances have provided remarkable progress in the fight against infection. recent developments indicate that both anti-viral drug and vaccine research should be pursued, in parallel with vector control programs.

关键词： dengue epidemiology pathogenesis dengue vaccine ve

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Capabilities of a New Sample Preparation Method for Probing Polymer Penetration and Localization into Wood Without Embedding

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Microscopy and Microanalysis 2015年第S3期21卷 727-728页

作者： Brian dorvel Praveenkumar Boopalachandran Andrew Bowling Xue Chen Steve King Dow Chemical Company Core R&D- Division of Analytical Sciences Freeport TX U.S.A 77541 Dow Agrosciences Advanced Technology Development Indianapolis IN U.S.A 46268 Dow Chemical Company Industrial Solutions R&D Freeport TX U.S.A 77541

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Experimental burning and real fire scenarios: Are they comparable in terms of chemical anthropology?

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La revue de Médecine Légale 2017年第4期8卷 187-187页

作者： Calil Makhoul Ana Amarante João d’Oliveira Coelho david Navega Miguel Almeida Stewart F. Parker Maria Teresa Ferreira domingos X. Viegas M.P.M. Marques Luís Batista de Carvalho david Gonçalves Eugénia Cunha Laboratory of Forensic Anthropology Centre of Functional Ecology University of Coimbra Coimbra Portugal Association for the Development of Industrial Aerodynamics University of Coimbra Portugal ISIS Facility STFC Rutherford Appleton Laboratory Chilton Didcot OX 11 0QX United Kingdom Research Centre for Anthropology and Health (CIAS) University of Coimbra Coimbra Portugal Molecular Physical Chemistry” R&D Unit Fac. Science and Technology University of Coimbra Coimbra Portugal Department of Life Sciences Faculty of Science and Technology University of Coimbra Coimbra Portugal Archaeosciences Laboratory Directorate General Cultural Heritage and LARC/CIBIO/InBIO Lisbon Portugal

Burned skeletal remains often undermine the anthropological methodology's reliability due to heat-induced changes (HIC). research based on controlled experimental burnings has tried to address this problem, but may not replicate real scenarios as it employs homogeneous heating provided by electrical furnace. In contrast, real fire situations are often more heterogeneous with intermittent heating caused by the constant on and off action of the flames. The objective of this research was to assess ihe value of spectroscopic analyses on dry skeletal remains depends on the type of burning event: i) electric furnace (homogeneous) and ii) open-air ignited trailer (heterogeneous). The association between organic phase pyrolysis and temperature and between the inorganic phase and individual chemometric indices was investigated in order to examine for differences. A sample of 70 right antimere belonging to the 21st Century Identified Skeletal Collection (CEI/XXI) and of a sample of 30 antimeres from the Non-Identified Skeletal Collection (NISC) from the Santarem Cemetery housed at the Laboratory of Forensic Science in the University of Coimbra, Portugal were used in this study. Both skeletal collections were burned with temperatures ranging from 500 °C to 1050 °C. The methods used to analyze the samples are vibrational spectroscopy and inelastic neutron scattering spectroscopy. It was possible to observe through spectroscopic analyses that in the organic phase, a relation between the concentration of the chemical elements and maximum temperature was present in both samples. The same was observed for the inorganic phase and the chemometric indices. results of this small experiment suggest that maximum temperature estimation and the individualization of commingled burned skeletal remains based on heat-induced recrystalization and diagenesis are possible in varied burning conditions. Therefore, the assessment of the parameters in real-fire settings appears to be quite promis

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Position Sensorless Control with Accelerometer for Linear and Curvilinear Synchronous Motor

Position Sensorless Control with Accelerometer for Linear an...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Yoshiyasu Takase Hiroshi Nakamura Minoru Koga Toru Shikayama Akihito Toyota Motion Application Development Dept. Corporate R&D Center Technology & Development Div. YASKAWA ELECTRIC CORPORATION 12-1 Otemachi Kokurakita-ku Kitakyushu Fukuoka 803-8530 Japan

ISBN: (纸本)9781479917631

In the field of the manufacturing industry, it has been often discussed that high-mix low-volume manufacturing is required to meet a variety of customer needs. In such a situation, cellular manufacturing and U shaped production lines are often adopted. Linear synchronous motors (LSMs) are appropriate to realize U shaped automation lines because of its strong features such as flexibility of layout, high efficiency and position control performance. However, a problem seems to lie in the fact that LSMs need a position sensor which is expensive and has less durability. For this reason, the position sensorless control for LSMs is required. In addition, the method should be easy to apply to all kinds of LSMs. Specifically, the method should require no saliency and be apply to a LSM which has a complex track including curvilinear section. Based on such a background, this paper presents a position estimation method for a Linear and Curvilinear Synchronous Motor with an accelerometer which is inexpensive and easy to attach to LSMs. As the proposed method in this paper does not require any motor saliency, it can be quickly applied to all LSMs. In this paper, the proposed method is shown and verified by experimental results.

关键词： Accelerometer High frequency signal injection Linear and curviliner synchronous motor Position sensorless control

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GWAS meta-analysis of over 29,000 people with epilepsy identifies 26 risk loci and subtype-specific genetic architecture

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Nature genetics 2023年第9期55卷 1471-1482页

作者： remi Stevelink dorothee Kasteleijn-Nolst Trenite Bobby P. C. Koeleman dick Lindhout Anja C. M. Sonsma Ciarán Campbell Gianpiero L. Cavalleri Norman delanty Hany El-Naggar Austin Lacey Peter Widdess-Walsh Colin P. doherty Siwei Chen Claire Churchhouse Mark J. daly Yen-Chen A. Feng daniel P. Howrigan Mitja I. Kurki Benjamin M. Neale Aarno Palotie Wei Zhou Namrata Gupta Henrike O. Heyne Bassel Abou-Khalil Kevin F. Haas r. S. Taneja Oluyomi M. Adesoji Michael Nothnagel Peter Nürnberg Thomas Sander Zaid Afawi Ilan Blatt Amos d. Korczyn Elisabetta Amadori Ganna Balagura Antonella riva Marcello Scala Paolo Scudieri Pasquale Striano Federico Zara Michele Iacomino Francesca Madia Alison Anderson Patrick Kwan Terence J. O’Brien Slavé Petrovski K. Meng Tan Marian Todaro Joseph Anderson danielle M. Andrade Quratulain Zulfiqar Ali Grazia Annesi Pauls Auce Andreja Avbersek Simona Balestrini Vera Braatz Claudia B. Catarino Krishna Chinthapalli Jennifer Jamnadas-Khoda dalia Kasperavičiūte Costin Leu Josemir W. Sander Sanjay M. Sisodiya Sara Zagaglia Melanie Bahlo Karen L. Oliver Mark d. Baker Beata Fonferko-Shadrach William O. Pickrell Carmen Barba Claudia Bianchini Viola doccini renzo Guerrini davide Mei Martino Montomoli Elena Parrini Annalisa Vetro Karen Barboza Fabrice Bartolomei Thomas Bast Bernhard J. Steinhoff Larry Baum Stacey S. Cherny Pak Sham Tobias Baumgartner Christian E. Elger Kerstin Hallmann Wolfram S. Kunz rainer Surges randi von Wrede Gábor Zsurka Betül Baykan Nerses Bebek Yeşim Kesim Albert J. Becker Susanne Schoch Felicitas Becker Caitlin A. Bennett Samuel F. Berkovic Stephanie L. Leech Brigid M. regan Ingrid E. Scheffer Bianca Berghuis Ahmad Beydoun Wassim Nasreddine Francesca Bisulli Lidia di Vito Lorenzo Ferri Tania Giangregorio Laura Licchetta raffaella Minardi Barbara Mostacci Carlotta Stipa Paolo Tinuper Lorenzo Muccioli Federica Pondrelli dheeraj r. Bobbili Emadeldin Hassanin roland Krause Zied Landoulsi Patrick May Ingo Borggraefe Christian Bosselmann Christian Hengsbach Josua Kegele Stephen Lauxmann Department of Genetics University Medical Center Utrecht Utrecht The Netherlands Stichting Epilepsie Instellingen Nederland (SEIN) Heemstede The Netherlands School of Pharmacy and Biomolecular Sciences The Royal College of Surgeons in Ireland Dublin Ireland The FutureNeuro Research Centre Dublin Ireland Department of Neurology Beaumont Hospital Dublin Ireland Department of Neurology St. James’s Hospital Dublin Ireland Analytic and Translational Genetics Unit Department of Medicine Massachusetts General Hospital and Harvard Medical School Boston MA USA Program in Medical and Population Genetics Broad Institute of MIT and Harvard Cambridge MA USA Stanley Center for Psychiatric Research Broad Institute of Harvard and M.I.T Cambridge MA USA Institute for Molecular Medicine Finland (FIMM) University of Helsinki Helsinki Finland Psychiatric & Neurodevelopmental Genetics Unit Department of Psychiatry Massachusetts General Hospital and Harvard Medical School Boston MA USA Division of Biostatistics Institute of Epidemiology and Preventive Medicine College of Public Health National Taiwan University Taipei Taiwan Hasso Plattner Institute Digital Health Center University of Potsdam Potsdam Germany Hasso Plattner Institute Mount Sinai School of Medicine New York City NY USA Department of Neurology Vanderbilt University Medical Center Nashville TN USA Cologne Center for Genomics (CCG) University of Cologne Faculty of Medicine and University Hospital Cologne Cologne Germany University Hospital Cologne Cologne Germany Department of Neurology Charité Universitaetsmedizin Berlin Campus Virchow-Clinic Berlin Germany Tel-Aviv University Sackler Faculty of Medicine Ramat Aviv Israel Department of Neurology Sheba Medical Center Ramat Gan Israel Department of Neurosciences Rehabilitation Ophthalmology Genetics Maternal and Child Health University of Genova Genova Italy IRCCS Istituto Giannina Gaslini Genova Italy Department of Medicine University of Melbour

Epilepsy is a highly heritable disorder affecting over 50 million people worldwide, of which about one-third are resistant to current treatments. Here we report a multi-ancestry genome-wide association study including 29,944 cases, stratified into three broad categories and seven subtypes of epilepsy, and 52,538 controls. We identify 26 genome-wide significant loci, 19 of which are specific to genetic generalized epilepsy (GGE). We implicate 29 likely causal genes underlying these 26 loci. SNP-based heritability analyses show that common variants explain between 39.6% and 90% of genetic risk for GGE and its subtypes. Subtype analysis revealed markedly different genetic architectures between focal and generalized epilepsies. Gene-set analyses of GGE signals implicate synaptic processes in both excitatory and inhibitory neurons in the brain. Prioritized candidate genes overlap with monogenic epilepsy genes and with targets of current antiseizure medications. Finally, we leverage our results to identify alternate drugs with predicted efficacy if repurposed for epilepsy treatment.

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Improvement of synthetic aperture sonar with multi-channel projector

Improvement of synthetic aperture sonar with multi-channel p...

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OCEANS

作者： Takao Sawa Takafumi Kasaya Kunihiko Nakatsuka Nobuhiro Tanaka Yasuo Furushima Marine Technology Center JAMSTEC Yokosuka Japan R&D Center for Earthquake and Tsunami JAMSTEC Yokosuka Japan Hardware Development Division SAS Co. Ltd Tokyo Japan Aiichi Industry Co. Ltd. Saitama Japan R&D Center for Submarine Resources JAMSTEC Yokosuka Japan

ISBN: (纸本)9781467393744

A synthetic aperture sonar gathers echoes from large area of seafloor per a ping, therefore the sonar needs wider width of the beam than Side scan sonar. But if the elements of the projector is just one element, it have to be small to widen the beam, and must be low sensitivity. One solutions to raise the sensitivity of the sonar is to use array as a receiver. The array is not only necessary for high sensitivity, but also the motion compensation and higher mapping rate in synthetic aperture process. Many synthetic aperture sonar are now constructed with a single transmitter with an arrayed receiver. But the projector remains small and single in many synthetic aperture sonars. The maximum detection range of synthetic aperture sonar was no longer than side scan sonar at same sonic frequency yet. To extend the sonar range, we proposed multi-channel projector whose elements lined vertically. We consider that the intensity of the projection beam increases keeping its width, by controlling a timing of the projection from each element. In addition, if the projector can receive echoes, 3d-maps can be generated simultaneously like a multi-beam echo sounder. This means synthesizing aperture process become more precise with the correct altitudes. In June 2014, we carried out survey with the synthetic aperture sonar totally for 40 hours over 5 days at offSanriku near border of Miyagi and Iwate prefecture. We evaluated the projector performance through detections of many artificial objects such as underwater reefs and sunken ship in the survey. We confirmed that projection beam was widen keeping projection power and maximum detection range was over 400 m in slant range. In addition, bottom detection process which is before step of 3d-mapping became easy.

关键词： Synthetic aperture sonar Acoustic beams Arrays Apertures receivers Marine vehicles

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IoT based access and analysis of wireless sensor node protocols with low power host connectivity

IoT based access and analysis of wireless sensor node protoc...

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International Conference on Smart Technologies and Management for Computing, Communication, Controls, Energy and Materials (ICSTM)

作者： Sarfaraj Hussain Mayur Kulkarni C. Malathi Embedded System & Technology Centre for Development of Advanced Computing Pune India R&D Department Centre for Development of Advanced Computing Pune India Vel Tech Dr.RR & Dr.SR Technical University Chennai India

Wireless communication is flexible and reliable connectivity for everywhere. Now a day's human follows the reliable and simple way to handle and control any technology. In this paper, we try to make life simple and easy to control the peripheral, where no matter which protocol user want for installation. i.e. Bluetooth, WI-Fi, Miwi etc. And also control the peripheral using Web service (http) or Android application as a way of IoT (Internet of things). Internet of Things (IoT) and Machine-to-Machine (M2M) communications describes how the Internet will expand as sensors and intelligence are connected to physical things such as physical assets or consumer devices and these things in turn are connected to the Internet. In this project we analyse the data packet of different nodes in window as well as Linux terminal for detecting fault or error in any particular node. We are using low power (5V) host device instead of computer i.e. *** paper show actual way of implementation in the world of wireless sensor node. User can access and also control the peripheral anywhere from the world via Internet.

关键词： Protocols IEEE 802.11 Standard Wireless sensor networks Wireless communication Internet Linux real-time systems

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Effects of thermo-compression bonding parameters on joint formation of micro-bumps in non-conductive film (NCF)

Effects of thermo-compression bonding parameters on joint fo...

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Electronic Components and technology Conference (ECTC)

作者： Ji-Won Shin Young Soon Kim Hyoung Gi Lee Un Byung Kang Sun Kyung Seo Kyung-Wook Paik Korea Advanced Institute of Science and Technology (KAIST) Korea Advanced Institute of Science and Technology Daejeon Daejeon KR Package Development team Semiconductor R&D Center Semiconductor Business Samsung Electronics Co. LTD Korea

ISBN: (纸本)9781479986101

Effects of thermo-compression bonding parameter on Cu-pillar/Sn-Ag interconnection reliability of NCF-assembled Chip-on-board (COB) package were investigated. Parallelplate modeling of gap size during the thermo-compression bonding process was performed. By using the viscosity/time graph and the modeling, prediction of gap size was performed in both bare chip to chip and real chip to board. The actually NCF bonding of COB module was performed with different heating rate of 5°C/min, 10°C/min, and 20°C/min. The gap height decreased as the heating rate increased and the results well corresponded with the modeling. All the bonded samples showed stable daisy and contact resistance at as bonded state, however 5°C/min sample showed severe T/C failures due to high gap height and unstable wetting of solder on pad.

关键词： Heating Bonding Viscosity Mathematical model resins Size measurement Joints

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A simulation based approach to detect wear in industrial robots

A simulation based approach to detect wear in industrial rob...

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IEEE International Conference on Automation Science and Engineering (CASE)

作者： V Sathish Srini ramaswamy Sachit Butail ABB India Development Center Global R&D Project Manager-Engineering (Power Generation) at ABB Department of Electronics and Communication Engineering Indraprastha Institute of Information Technology Delhi (IIITD) New Delhi India

In this paper we simulate, detect, and locate wear in industrial robots operating over long time-periods on repetitive tasks. We simulate wear using the MATLAB robotics toolbox by increasing the Coulomb friction coefficient on select robot axes. disturbance and measurement noise are included in each axis while computing the inverse and forward kinematics. To compare change across all configurations within a repetitive cycle, the output torque data is transformed into a normalized distribution sampled once every hour. We identify wear as significant change in torque values from normal operating conditions, and detect wear using principal component analysis; the source axis is located by cross-correlating the output data from all axes through time. Simulation results with a range of friction values tested for three different tasks across all axes show that wear detection on the basis of comparison with normal operating condition depends on the manipulator task, whereby onset of wear was detected in five out of six axes for one task and two out of six axes in the rest. Wear location was correctly identified in all successful detections except one.

关键词： Friction Torque Service robots Principal component analysis Noise Noise measurement

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