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19th (2009) International OFFSHORE AND POLAR engineering CONFERENCE

作者： Minagawa, Hideki Sakamoto, Yasuhide Komai, Takeshi Narita, Hideo Mizutani, Kazutaka Ohga, Kotaro Takahara, Naoya Yamaguchi, Tsutomu Toyohira-ku Sapporo Japan Field of Study of Sustainable Resources Engineering Faculty of Engineering Hokkaido University Kita-ku Sapporo Japan Mitsui Zosen Inc. Akishima Tokyo Japan Department of Environmental Science Faculty of Science Toho University Funabashi Chiba Japan

ISBN: (纸本)9781880653531

In order to clarify the relation between permeability and these properties, the permeability, grain-size distribution, porosity, pore-size distribution, and surface-to-volume ratio of glass beads and sandy sediments have been measured. A semi-empirical (SE) equation for the permeability of glass beads and sandy sediment has been derived based on the Kozeny-Carman equation using pore-size distribution and porosity measured by mercury porosimetry. This SE equation has been approximated by the relation of the porosity, pore-size distribution, tortuosity, and surface-to-volume ratio of the sediment. The permeabilities calculated by the SE equation correspond well to the permeability measured by water flow. Furthermore, techniques for converting NMR-T2 distribution developed in our previous work were applied in order to obtain the pore-size distribution with higher spatial resolution. Copyright © 2009 by The International Society of Offshore and Polar Engineers (ISOPE).

关键词： Pore size

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Special session - Come on down: Multiple pedagogical options using game show formats

Special session - Come on down: Multiple pedagogical options...

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39th Annual Frontiers in Education Conference: Imagining and engineering Future CSET Education, FIE 2009

作者： Karlin, Jennifer Surovek, Andrea South Dakota School of Mines and Technology United States Department of Industrial Engineering New Faculty Development Program South Dakota School of Mines and Technology United States Department of Civil and Environmental Engineering United States

ISBN: (纸本)9781424447152

Injecting a sense of play into the classroom carries many positive benefits. While game show formats in the classroom are neither new nor restricted to engineering and computer science, they are a powerful tool for bringing in that sense of play into the learning environment. Game show formats can be used to deliver new content, more deeply explore concepts in a problembased course, discover on which points the students need more help, and review content already learned. This immersive special session will demonstrate and discuss using the game show format in three different situations: knowledge-based content with either individuals or teams;problem solving content with teams;and decision making with teams. The goal of this special session is to demonstrate the versatility of the game show format for injecting play into the classroom while supporting a wide variety of learning goals. Additionally, participants will leave the session with tools to reduce the implementation cost of using the game show format in their own classes and labs. ©2009 IEEE.

关键词： Problem solving

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Cryopreservation of amphioxus (Branchiostoma belcheri) spermatozoa

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Acta Oceanologica Sinica 2009年第2期28卷 96-102页

作者： XU Yuyan ZHANG Shicui VERAPONG Vuthiphandchai SUBUNTITH Nimrat College of Food Science and Engineering Ocean University of China Qingdao 266003 China College of Marine Biology Ocean University of China Qingdao 266003 China Department of Aquatic Science Burapha University Chonburi 20131 Thailand Department of Microbiology and Environmental Science Program Faculty of Science Burapha University Chonburi 20131 Thailand

Amphioxus, Branchiostoma belcheri, a closest relative of vertebrates, is at a high risk of extinction due to a combination of low effective population size, altered native habitats and environmental pollution, yet little is known about cryopreservation of its gametes. This study deals with the cryopreservation of amphioxus senlen. The main findings are that （1） the extender of Yao et al. is the best one among the four extenders examined; （2） the appropriate ratio of semen to extender of Yao et al. plus cryoprotectant is from 1：5 to 1：7; （3） dimethyl sulfoxide （DMSO） and methanol are the better cryoprotectants than glycerol, with DMSO giving the best results; （4） the eggs fertilized with post-thaw spermatozoa are capable of developing to at least hatching stage, and the highest hatching rate is （12.4±3.0）%. This is the first report on freezing and thawing of amphioxus spermatozoa, providing a simple and practical protocol for cryopreservation of amphioxus spermatozoa and laying a foundation for safeguarding this endangered species.

关键词： amphioxus Branehiostoma beleheri cryopreservation spermatozoa motility

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Magnetic field of screened bifilar transmission line

Acta Technica CSAV (Ceskoslovensk Akademie Ved)

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Acta Technica CSAV (Ceskoslovensk Akademie Ved) 2009年第3期54卷 273-289页

作者： PiĄtek, Zygmunt Kusiak, Dariusz Szczegielniak, Tomasz Czestochowa University of Technology Faculty of Environmental Engineering Protection Institute of Environmental Engineering Brzeznicka 60a 42-200 Czȩstochowa Poland Czestochowa University of Technology Faculty of Electrical Engineering Institute of Industrial Electrotechnics Aleja Armii Krajowej 17 42-200 Czȩstochowa Poland Czestochowa University of Technology Faculty of Environmental Engineering Protection Doctorate Study DĄbrowskiego 73 42-200 Czȩstochowa Poland

For solutions of Laplace equation in non-conducting areas and Helmholtz equation for electric field of a screen, the second Maxwell equation is used and boundary conditions for magnetic field are determined. These conditions provide some parameters describing magnetic field inside, outside and in the screening shell of a single-wire transmission line with non-coaxial phase conductors. The components of this field are expressed in terms of the modified Bessel functions in cylindrical coordinates. The solution respects the effects of the reverse reaction magnetic field of eddy currents induced in the screening shell as a result of the internal proximity effect. It allows calculating the total magnetic field (of elliptic character) everywhere in the cross-section of the screened bifilar transmission line. Evaluation of the influence of the shell on the total magnetic field of the line is performed by comparing the modulus of this field with the modulus of field calculated for unscreened line along the internal and external surfaces of the shell, and inside the shell. © 2009 Institute of Thermomechanics AS CR, v.v.i.

关键词： Electric lines

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城市固体废弃物双重不确定规划模型

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环境工程 2009年第S1期27卷 371-374,402页

作者：范玉瑞黄国和梁宇希聂向晖华北电力大学能源与环境研究中心北京102206 Environmental Systems Engineering Program Faculty of EngineeringUniversity of ReginaRegina

针对城市固体废弃物规划管理过程中存在的不确定性问题,提出了模糊边界区间参数线性规划模型,即参数的区间边界利用模糊数来表达的线性规划模型。模糊边界区间参数线性规划是模糊规划和区间规划的扩展,其参数以区间数或者三角模糊数表... 详细信息

针对城市固体废弃物规划管理过程中存在的不确定性问题,提出了模糊边界区间参数线性规划模型,即参数的区间边界利用模糊数来表达的线性规划模型。模糊边界区间参数线性规划是模糊规划和区间规划的扩展,其参数以区间数或者三角模糊数表示。结果表明:模型可以得到合理的结果,决策者可根据实际情况,在解区间内调整决策变量值,从而得到多个决策方案。

关键词：三角模糊数区间数固废管理不确定性

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Measurement and correlation of supercritical CO_(2) and ionic liquid systems for design of advanced unit operations

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Frontiers of Chemical Science and engineering 2009年第1期3卷 12-19页

作者： Hiroshi MACHIDA Ryosuke TAGUCHI Yoshiyuki SATO Louw J.FLORUSSE Cor J.PETERS Richard L.SMITH Department of Chemical Engineering Research Center of Supercritical Fluid TechnologyTohoku UniversitySendaiJapan Graduate School of Environmental Studies Tohoku UniversitySendaiJapan Laboratory of Applied Thermodynamics and Phase Equilibria Faculty of Applied SciencesDelft University of TechnologyJulianalaan 1362628 BL DelftThe Netherlands Laboratory of Process Equipment Department of Process and EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyLeeghwaterstraat 442628 CA DelftThe Netherlands Petroleum Institute Chemical Engineering ProgramBu Hasa BuildingRoom 2203P.O.Box 2533Abu DhabiUnited Arab Emirates

Ionic liquids combined with supercriticalﬂuid technology hold great promise as working solvents for developing compact *** liquids,which are organic molten salts,typically have extremely low volatility and high functionality,but possess high viscos-ities,surface tensions and low diffusion coefﬁcients,which can limit their ***_(2),on the other hand,especially in its supercritical state,is a green solvent that can be used advantageously when combined with the ionic liquid to provide viscosity and surface tension reduction and to promote mass *** solubility of CO_(2) in the ionic liquid is key to estimating the important physical properties that include partition coefﬁcients,viscosities,densities,interfacial tensions,thermal conductivities and heat capacities needed in contactor *** this work,we examine a subset of available high pressure pure component ionic liquid PVT data and high pressure CO_(2)-ionic liquid solubility data and report new correlations for CO_(2)-ionic liquid systems with equations of state that have some industrial applications including:(1)general,(2)fuel desulfurization,(3)CO_(2) capture,and(4)chiral *** measurements of solubility data for the CO_(2) and 1-butyl-3-methylimidazolium octyl sulfate,[bmim][OcSO4]system are reported and *** the correlation of the CO_(2) ionic liquid phase behavior,the Peng-Robinson and the Sanchez-Lacombe equations of state were considered and are *** is shown that excellent correlation of CO_(2) solubility can be obtained with either equation and they share some common characteristics regarding inter-action *** the Sanchez-Lacombe equation,parameters that are derived from the supercritical region were found to be important for obtaining good correlation of the CO_(2)-ionic liquid solubility data.

关键词： compact processes chiral ionic liquids separations thermodynamic properties equations of state

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Corrigendum to “Effects of sodium acetate as a pH control amendment on the composting of food waste” [Bioresource Technology 100 (6) (2009) 2005–2011]

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Bioresource Technology 2009年第10期100卷 2745-2745页

作者： Hui Yu Guo H. Huang Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Saskatchewan S4S 0A2 Canada Chinese Research Academy of Environmental Science Beijing Normal University Beijing 100012-100875 China

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Modeling of state of vegetation and soil erosion over large areas

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International Journal of Sediment Research 2008年第3期23卷 181-196页

作者： Zhao-Yin WANG1*, Guangqian WANG2, and Guohe HUANG31 Prof., State Key Laboratory of Hydroscience and engineering, Tsinghua University, Beijing 100084, China2 Prof., State Key Laboratory of Hydroscience and engineering, Tsinghua University, Beijing 100084, China3 Prof. and Canada Research Chair, environmental Systems engineering program, faculty of engineering, University of Regina, Regina, Sask S4S 0A2, Canada Prof. State Key Laboratory of Hydroscience and Engineering Tsinghua University Beijing 100084 China Prof. State Key Laboratory of Hydroscience and Engineering Tsinghua University Beijing 100084 China Tel: 86-10-62781748 Fax: 86-10-62772463 Prof. and Canada Research Chair Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Sask S4S 0A2 Canada

A vegetation-erosion model was developed to assess the extent of soil erosion and development trend of vegetation in the context of existing and contemplated vegetation-based soil erosion controls under different climatic, topographical and soil conditions. The model recognizes four vegetation-mediated soil erosion states: (i) an expanding vegetation coverage coupled with reduced erosion (C), (ii) a deteriorating vegetation coverage coupled with increased erosion (A), (iii) two transitional states between A and C, one with increasing erosion and vegetation coverage (B) and the other with decreasing erosion and vegetation coverage (D). With the model, the vegetation-erosion state of any particular area can be quantitatively described, by way of a vegetation-erosion chart, for varying climate, soil and topographic conditions, as demonstrated for the Xishan region, the East River basin, the Wangjiagou and Anjiagou watersheds (Loess Plateau), and the Xiaojiang watersheds (hot and dry valleys in the upper Yangtze River basin) in China. This paper presents the principles and results of area-specific investigations that track the fractions of the areas covered by vegetation and experiencing soil erosion (with soil loss determined in t/km2yr). This is done within the context of local soil erosion control initiatives via re-vegetation efforts, or the lack thereof, over the course of 30 years. The effectiveness of reforestation and erosion-control measures vary under different climatic, topographical and soil conditions. The vegetation may be quickly restored in the hot and wet East River basin but is very difficult on the dry and cold Loess Plateau. In the hot and dry valleys the vegetation can be restored if erosion is controlled and intensive reforestations for small watersheds are performed.

关键词： Soil erosion Vegetation coverage Loess Plateau Vegetation-erosion chart Reforestation

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Thermophysical Properties of PuO2 and AmO2 Solid Solutions Simulated by Molecular Dynamics

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MRS Online Proceedings Library 2008年第1期1043卷 1-6页

作者： Tosawat Seetawan Thaweewat Khuangthip Vittaya Amornkitbamrung Ken Kurosaki Jun Adachi Masahito Katayama Anek Charoenphakdee Shinsuke Yamanaka Program of Physics Faculty of Science and Technology Sakon Nakhon Rajabhat University Sakon Thailand Integrated Nanotechnology Research Center and Departments of Physics Khon Kaen Thailand Division of Sustainable Energy and Environmental Engineering Graduate School of Osaka University Suita Japan

PuO2 and AmO2 solid solutions: (Pu, Am)O2 are one of the candidates of fuels in a sub-critical accelerator-driven system (ADS). To understand the fuel performance, the thermophysical properties such as thermal conductivity and heat capacity are quite important. However, it is very hard to experimentally determine the physical properties of plutonium as well as americium compounds due to their handling-difficulties. Molecular dynamics (MD) would be a specific method to describe the physical properties of such materials. In the present study, we have investigated thermophysical properties of PuO2, AmO2, and their solid solutions in the temperature range from 300 to 2,500 K. The lattice parameter, compressibility, heat capacity, linear thermal expansion coefficient, and thermal conductivity were evaluated. A Morse-type potential function added to the Busing-Ida type potential was employed as the potential for interatomic interactions. The calculated lattice parameters of (Pu, Am)O2 obeyed Vegard’s law, and the values increased with temperature. The heat capacities of (Pu, Am)O2 were similar in any compositions. The thermal conductivities of (Pu, Am)O2 were lower than those of PuO2 and AmO2, indicating that a point-defect scattering effect of phonons could be realized in the MD calculations.

关键词： composite oxide microstructure

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Panel session - preparing the engineers of 2020 - emerging evidence from six exemplary colleges and universities

Panel session - preparing the engineers of 2020 - emerging e...

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Frontiers in Education (FIE) Conference

作者： Patrick T. Terenzini Lisa R. Lattuca Gul E. O. Kremer Carolyn Plumb Lois C. Trautvetter Center for the Study of Higher Education The Pennsylvania State University USA Faculty in Industrial The Pennsylvania State University USA College of Engineering Montana State University USA Higher Education Administration and Policy Program Northwestern University USA

This session will present preliminary findings from Prototyping the Engineer of 2020: A 360-degree study of Effective Education (P360), funded by the National Science Foundation. The study is designed to provide empirically based guidance for engineering programs seeking to recruit and retain diverse students and to prepare all new engineers for work in a changing global economy. Researchers identified six institutions that are, in different ways, already producing engineers with some of the attributes of the Engineer of 2020: Arizona State University, Harvey Mudd College, Howard University, MIT, the University of Michigan, and Virginia Tech. Brief presentations will identify educational and institutional practices and policies that appear to be especially effective in producing engineers with superior design, interdisciplinary, and contextual knowledge and skills. Presenters will also discuss linkages between effective curricula, instruction, and student experiences and supportive institutional cultures, practices, and policies.

关键词： Educational institutions Education Communities Springs engineering education Interviews Problem-solving

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