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作者： Muramatsu, Dairoku Koshiji, Fukuro Koshiji, Kohji Sasaki, Ken Department of Human and Engineered Environmental Studies Graduate School of Frontier Science University of Tokyo 5-1-5 Kashiwano-ha Kashiwa-shi Chiba277-8563 Japan Program in Electrical Engineering Graduate School of Engineering Kokushikan University 4-28-1 Setagaya Setagaya-ku Tokyo154-8515 Japan Department of Electrical Engineering Graduate School of Science and Technology Tokyo University of Science 2641 Yamazaki Noda-shi Chiba278-8510 Japan

In human body communication, it is important to investigate the input impedance characteristics of electrodes and transmission characteristics between transceivers for improving the qualities of communication and reducing power consumption. In this work, we studied the input impedance characteristics and transmission characteristics between a wristwatch device and a handheld device using both a three-dimensional electromagnetic field simulation and experiment at 10 MHz. The input impedance and transmission characteristics obtained from the simulation using a muscle homogenous model and those obtained from the measurement using a muscle-tissue-equivalent phantom showed good consistency. The calculated electric field around a human arm decreased as it moved away from the surface of the arm. This distribution of the electric field showed the advantages of human body communication, which are confidential communication and electromagnetic compatibility (EMC). Moreover, power consumption at the feeding point of the system was calculated from the transmission characteristics obtained from the simulation. This result indicated that human body communication achieves low-power consumption.

关键词： Electrodes

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Load Distribution and Body Angle Measurement in Static Walking of a Quadruped Walking Robot

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IFAC Proceedings Volumes 2000年第29期33卷 95-99页

作者： Hiroshi Nakashima Masaru Tokuda Hiroaki Yamamoto Masafumi Funakoashi Associate Professor Division of Environmental Science and Technology Graduate School of Agriculture Kyoto University 606-8502 JAPAN. Instructor Department of Agricultural and Environmental Engineering Faculty of Agriculture Kobe University 657-8501 JAPAN Professor ditto. Master Program Student Graduate School of Science and Technology Kobe University 657-8501 JAPAN

A prototype quadruped walking robot has been developed to examine the possibility of application in agricultural works. The purpose of current study is to obtain some information on load distribution and inclination angle of vehicle body in three typical motion of forward, lateral and turning walk. The result showed that the current configuration of robot body required the severe translation of CG point which results in increasing of pitching angle of vehicle body.

关键词： robotics quadruped robot static walking load distribution pitching and rolling angle

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Development of a smartphone-based app for determination of formaldehyde concentration indoors 15

Development of a smartphone-based app for determination of f...

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15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018

作者： Zhang, Siyang Shapiro, Nicholas Gehrke, Gretchen Castner, Jessica Liu, Zhenlei Guo, Beverly Zhang, Jianshun Haines, Sarah Kormos, David Frey, Paige Qin, Rongjun Dannemiller, Karen C. Department of Computer Science and Engineering Ohio State University United States Public Laboratory for Open Technology and Science Department of Mechanical and Aerospace Engineering Syracuse University Environmental Science Graduate Program Ohio State University United States Department of Civil Environmental and Geodetic Engineering College of Engineering Ohio State University United States Strand Associates Incorporated Department of Electrical and Computer Engineering Ohio State University United States Department of Environmental Health Sciences College of Public Health Ohio State University United States

ISBN: (纸本)9781713826514

Formaldehyde is a ubiquitous contaminant in the indoor environment that is both a carcinogen and irritant. The goal of this project is to develop a smartphone-based app for use by citizen scientists or researchers that can be paired with low-cost colorimetric badges for detection of indoor formaldehyde. We conducted both national and geographically-targeted surveys prior to app design. We have subsequently developed the app and conducted a beta test. Surveys of 147 individuals indicated broad public interest in formaldehyde testing using smartphone technology. Testing of the badges indicated consistent change in illumination with increasing formaldehyde exposure. Beta testing indicated users were able to navigate the existing app, and highlighted areas for improvement including incorporation of public surveys. Planned future analysis includes extensive calibration testing and a community-based field test. © 2018 15th Conference of the International Society of Indoor Air Quality and Climate, INDOOR AIR 2018. All rights reserved.

关键词： Formaldehyde

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Carbon monoxide from cookstoves in developing countries: 2. Exposure potentials

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Chemosphere - Global Change science 1999年第1期1卷 367-375页

作者： Zhang, J. Smith, K.R. Uma, R. Ma, Y. Kishore, V.V.N. Lata, K. Khalil, M.A.K. Rasmussen, R.A. Thorneloe, S.T. Environmental and Occupational Health Sciences Institute Robert Wood Johnson Medical School and Rutgers University 170 Frelinghuysen Road Piscataway NJ 08854 USA Program on Environment East-West Center Honolulu HI USA University of California Berkeley CA USA Tata Energy Research Institute New Delhi India Tsinghua University Beijing People's Republic of China Portland State University Portland OR USA Oregon Graduate Institute of Science and Technology Beaverton OR USA US Environmental Protection Agency Research Triangle Park NC USA

In this paper, we estimate carbon monoxide (CO) concentrations and exposures in a well-mixed, hypothetical village kitchen using measured CO emission factors and published typical values for house, fuel, and activity parameters. The estimate was made to compare CO exposure potentials for a range of no-flue fuel/stove combinations. Based upon this quantitative comparison, recommendations were made on CO exposure reduction by fuel/stove switching. If their house conditions and activity patterns are comparable to those typical values assumed in our estimation, people using biomass and coal cookstoves could have daily CO exposures greater than the exposure equivalents of health-based national standards and WHO guidelines.

关键词： Carbon monoxide exposure Indoor air pollution Cookstoves Domestic fuels Developing countries

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Exploring transposable element-based markers to identify allelic variations underlying agronomic traits in rice

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Plant Communications 2022年第3期3卷 59-71页

作者： Haidong Yan David C.Haak Song Li Linkai Huang Aureliano Bombarely School of Plant and Environmental Sciences Virginia TechBlacksburgVA 24061USA Graduate Program in Genetics Bioinformatics and Computational Biology(GBCB)Virginia TechBlacksburgVA 24061USA Department of Grassland Science Animal Science and Technology CollegeSichuan Agricultural UniversityChengdu 611130China Department of Bioscience Universita degli Studi di Milano(UNIMI)20133 MilanoItaly Instituto de Biologıa Molecular y Celular de Plantas(IBMCP) UPV-CSIC46022 ValenciaSpain

Transposable elements(TEs)are a major force in the production of new alleles during domestication;nevertheless,their use in association studies has been limited because of their *** have developed a TE genotyping pipeline(TEmarker)and applied it to whole-genome genome-wide association study(GWAS)data from 176 Oryza sativa *** accessions to identify genetic elements associated with specific agronomic *** markers recovered a large proportion(69%)of single-nucleotide polymorphism(SNP)-based GWAS peaks,and these TE peaks retained ca.25%of the *** use of TEs in GWASs may reduce false positives associated with linkage disequilibrium(LD)among SNP markers.A genome scan revealed positive selection on TEs associated with agronomic *** found several cases of insertion and deletion variants that potentially resulted from the direct action of TEs,including an allele of LOC_Os11g08410 associated with plant height and panicle length ***,these findings reveal the utility of TE markers for connecting genotype to phenotype and suggest a potential role for TEs in influencing phenotypic variations in rice that impact agronomic traits.

关键词： transposable element marker agronomic trait rice GWAS

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Thermal runaway evaluation of α-methylstyrene and trans-β-methylstyrene with benzaldehyde

Thermal runaway evaluation of α-methylstyrene and trans-β-...

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作者： Lin, S.-Y. Tseng, J.-M. Lee, M.-K. Wu, T.-C. Shu, C.-M. Doctoral Program Graduate School of Engineering Science and Technology National Yunlin University of Science and Technology 123 University Rd. Douliou Yunlin 64002 Taiwan Department of Occupational Safety and Health Chia-Nan University of Pharmacy and Science 60 Er-Jen Rd. Jen-Te Tainan 71710 Taiwan Department of Safety Health and Environmental Engineering HungKuang University 34 Chung-Chie Rd. ShaLu Taichung 43302 Taiwan

Styrene is an important chemical in the petrochemical industry. In recent years, there have been sporadic releases, runaway reactions, fires, and thermal explosion accidents incurred by styrene and its derivatives worldwide. The purpose of this study was to estimate the impact of styrene and its derivatives of α-methylstyrene (AMS) and trans-β-methylstyrene (TBMS) contacting with benzaldehyde. Experiments were carried out to evaluate the thermokinetic parameters estimated by differential scanning calorimetry (DSC) and thermal activity monitor III (TAM III). TAM III was used to determine the fundamental thermokinetics under various isothermal temperatures, 80, 90 and 100C. This autocatalytic reaction was demonstrated in thermal curves. After styrene was contacted with benzaldehyde, the exothermic onset temperature (T 0) and the total heat of reaction (Q total) were altered by DSC tests. When benzaldehyde is mixed with AMS and TBMS, the reaction time will be shorter but the enthalpy reduced, as revealed by TAM III tests. As AMS and TBMS, respectively, were contacted with benzaldehyde, both exothermic phenomena were changed during the reaction excursion. According to the results of this research, an operator should dictate the oxygen concentration in order to avoid any potential hazards during handling and transportation. © 2009 Akadémiai Kiadó, Budapest.

关键词： Differential scanning calorimetry

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Assessment of natural ventilation using a whole-building simulation model: A case study of a landmark building 10

Assessment of natural ventilation using a whole-building sim...

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10th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings, IAQVEC 2019

作者： Jean, Marc-Antoine Upadhyay, Rohit Flood, Chris Mora, Rodrigo Junior Engineer in Building Mechanics Pageau Morel Inc. MontrealQC Canada Intermediate Building Performance Analyst Integral Group VancouverBC Canada Integrated Environmental Solutions IES-VE Canada Faculty Building Science Graduate Program British Columbia Institute of Technology VancouverBC Canada

Whole-building simulation and field measurements were conducted at two levels: At the whole building level and at the local-space level, at a landmark building in Vancouver, Canada. The analysis shows that calibrated whole-building simulations are accurate enough and useful for the assessment of natural ventilation. For large complex spaces, the analysis needs to be coupled with computational fluid dynamics to predict thermal stratification. In the case study building, such coupling was not critical, because changes in the natural ventilation original design intent caused a large atrium to be decoupled from the rest of the building, which was detrimental to the effectiveness of the natural cooling of the building in the summer. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Buildings

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Influence of the Corrosion Degree of Hot-Dipped Galvanized Reinforcements on its Bond Strength to Concrete

SSRN

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SSRN 2024年

作者： da Fonsêca, Márcia Suzanna Dutra Abreu Borges Meira, Gibson Rocha The Civil and Environmental Engineering of Federal University of Paraíba João Pessoa Brazil The Federal Institute of Education Science and Technology of Paraíba João Pessoa Brazil The Civil and Environmental Engineering Post-graduate Program of Federal University of Paraíba João Pessoa Brazil

This work studies the behavior of hot-dipped galvanized steel against chloride corrosion and its effect on its bond strength to concrete. Two steel diameters were adopted and bond strength was assessed using a standardized pull-out test, followed by measuring different degrees of corrosion. The results show that the initial corrosion of hot-dipped galvanized steel, due to the high alkalinity of fresh concrete, does not affect the structural performance of reinforced concrete and that galvanized steel has superior bond strength to concrete than non-galvanized steel for small corrosion rates. However, it decreases as the corrosion degree significantly increases. © 2024, The Authors. All rights reserved.

关键词： Reinforced concrete

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Archimedean Spiral Multi-resonator for Chipless RFID Tag Using Frequency-Coded Decimal Method

Archimedean Spiral Multi-resonator for Chipless RFID Tag Usi...

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SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference

作者： Hillner de P. A. Ferreira Alexandre J. R. Serres Georgina Karla de F. Serres Francisco M. de Assis Alfredo Gomes Neto Post-Graduate Program in Electrical Engineering Federal University of Campina Grande Group of Telecom. and Applied Electromagnetism Federal Inst. of Educ. Science and Technology of Paraiba

ISBN: (纸本)9781467394932

A compact electromagnetic multi-resonator is presented in this paper using a new technique for chipless RFID tag data encoding. Employing Archimedean spirals, the information is applied into the spectral signature shifting resonant frequencies in several positions. The multi-resonator tag proposed operates in microwave band (between 3.0-7.0GHz) and has a coding data capacity of up to 100 decimal numbers for two resonant frequencies. The simulated and measured results show a good concordance and a great perspective to use in low-cost RFID chipless tag applications.

关键词： RFID chipless Frequency-Coded Decimal Archimedean spiral Multi-resonator

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Molecular phylogeny and postharvest morphology of petals in two major Nelumbo nucifera cultivars in Thailand

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Agriculture and Natural Resources 2018年第1期52卷 45-52页

作者： Salaemae, Nurainee Takeda, Seiji Kubo, Nakao Kaewsuksaeng, Samak Program of Biotechnology Faculty of Technology and Community Development Thaksin University Phatthalung Campus Phatthalung 93210 Thailand Graduate School of Life and Environmental Sciences Kyoto Prefectural University Kyoto 606-8522 Japan Biotechnology Research Department Kyoto Prefectural Agriculture Forestry and Fisheries Technology Center Seika 619-0244 Kyoto Japan Department of Plant Science Faculty of Technology and Community Development Thaksin University Phatthalung Campus Phatthalung 93210 Thailand

Nelumbo nucifera is a symbolic flower of Buddhism and widely used for decoration in Asia. In most cases its buds are used as cut-flowers, which usually do not open and the outer petals turn black, leading to loss of visual quality and thus decreasing their economic value in markets. In Thailand, two major cultivars, Sattabongkot and Saddhabutra, are used and exported to foreign countries. To investigate the difference between these two cultivars, their molecular phylogeny and postharvest morphology were examined. Using 25 simple sequence repeat (SSR) markers, the cultivar Saddhabutra was very close to the cultivar Satabuto. These results showed a high bootstrap (BS) value of 96%. In contrast, lotus cultivars in Thailand including Sattabongkot and Saddhabutra, showed a BS value of 90%. Saddhabutra and Satabuto are classified in the same group with high similarity, whereas Sattabongkot shows relatively lower similarity. Petal blackening started earlier in Saddhabutra than Sattabongkot, indicating a vase-life difference among cultivars, with Sattabongkot and Saddhabutra having a vase life of 72 and 54 h, respectively. The epidermal cells of normal petals of Sattabongkot and Saddhabutra showed freshness and a round shape with turgid cells. The petal blackening was accompanied with a reduction of the area and perimeter in both cultivars. Sattabongkot had fewer stomata than Saddhabutra. The study provided a molecular classification of the Thailand lotus cultivars and provides a useful technique for the quantification of the postharvest quality of lotus cultivars. © 2018 Kasetsart University

关键词： Cell morphology Nelumbo nucifera Petal blackening Phylogeny

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