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ASEE 2004 Annual Conference and Exposition, "engineering Researchs New Heights"

作者： Fentiman, Audeen W. Ohio State University Nuclear Engineering Graduate Program Ohio State University Interdisc. Environ. Sci. Grad. Prog.

The support for graduate students as Graduate Research Associates (GTA) on faculty projects and Graduate Teaching Associates to teach undergraduate nuclear engineering courses was found. The National sci.nce Foundation sponsors a K-12 Teaching Fellows program and a variety of other projects in which sci.nce students serve as resource persons in public schools classrooms. Scholarships and fellowships are offered by universities, professional organizations, non-profit foundations, government agencies and industries. The various branches of the armed forces also provide support for some of their officers to pursue advanced degrees in nuclear engineering on a full-time basis.

关键词： Students

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Application of autocontrol technology in evaporative cooling systems in northwest area of China

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International Journal of Heat and Technology 2004年第1期22卷 165-169页

作者： Qiang, Tian-Wei Shen, Heng-Gen Coll. of Environ. Sci./Engineering Donghua University Shanghai 200051 China

Now, evaporative cooling systems are being used in northwest area of China, but there is scarcely any application of autocontrol technology in evaporative cooling systems in this area and published literature is much less. This paper presents a practical autocontrol application in evaporative cooling systems. Author designed a central evaporative cooling air conditioning system that includes reasonable arrangement of evaporative cooling equipments and running program. As a result the system not only can protect equipments, save manpower and energy consumption, but also can produce a more controllable supply air temperature. In this paper, by means of psychrometric charts, author analyzed evaporative cooling control process.

关键词： Evaporative cooling systems

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Complexation on micelles and its application: Pontachrome violet SW/cetyltrimethylammonium bromide/Cu(II) ternary complexation

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Journal of Applied Spectroscopy 2004年第2期71卷 173-179页

作者： Xia, S.Q. Jiang, L.Y. Gao, H.-W. State Key Lab. Poll. Contr. Rsrc. R. Sch. of Environ. Sci. and Eng. Tongji Univ. Shanghai 200092 P. China Department of Textile Engineering Nantong Institute of Technology P. R. China China

The ternary interaction of pontachrome violet SW (PCV) with cetyltrimethylammonium bromide (CTAB) and Cu(II) at pH 10.5 has been investigated by a microsurface adsorptionspectral correction (MSASC) technique. The aggregation of PCV on CTAB obeyed the Langmuir isothermal adsorption. Results showed that the binding constant of the CTABPCV aggregate was K = 2.68·105 liter·mole-1. The ternary monomer complex Cu·PCV·CTAB2 was formed. The complexation between Cu and PCV is sensitive in the presence of CTAB and selective in the presence of thioglycolic acid, trisodium citrate, and pphenanthroline, and it was applied to the determination of Cu trace with satisfactory result.

关键词： Copper compounds

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Thinking globally and acting locally: Can the Johannesburg partnerships coordinate action on sustainable development?

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Journal of environ.ent and Development 2004年第3期13卷 220-239页

作者： Hale, Thomas N. Mauzerall, Denise L. Woodrow Wilson Sch. Public/Intl. Aff Princeton University Princeton NJ United States Sci. Technol./Environ. Plcy. Program Woodrow Wilson Sch. Public/Intl. Aff Princeton University Princeton NJ United States

At the 2002 UN World Summit on Sustainable Development, a new multi-stakeholder partnerships initiative was launched. It was hoped that partnerships would catalyze nongovernmental participation in and additional funding of sustainable development projects around the world. The authors find that at present, however, little partnership financing is coming from new sources;most is coming from governments and less than 1% from the private sector. Guided by empirical findings from the partnerships to date, we propose the following to make the partnership program more effective: (a) establishing a learning network;(b) increasing the transparency of partnerships;(c) increasing private sector and small stakeholder participation;(d) establishing an institutional home to support partnerships;and (e) ensuring that the partnerships are consistent with multilateral priorities. © 2004 Sage Publications.

关键词： Accountability International environ.ental issues Partnership Sustainable development Transparency Type II World Summit on Sustainable Development

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Multiple benefits through integrated end-use water management strategies

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Industry and environ.ent 2004年第1期27卷 44-46页

作者： Wilkinson, Robert C. Bren Sch. Environ. Sci./Management Environmental Studies Program University of California Santa Barbara Rocky Mountain Institute 1428 West Valerio Street Santa Barbara CA 93101 United States

The multiple benefits through integrated end-user water management strategies are discussed. The potential for integrated water management strategies to provide significant energy savings is studied. It is found that stormwater capture for groundwater recharge, and other innovative water capture strategies are enhancing water supply reliability. The water efficiency potential in commercial, industrial and institutional sectors is also elaborated.

关键词： Water supply

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Sustainability in the information society: 11th SETAC Europe LCA case studies symposium 3-4 December 2003

Sustainability in the information society: 11th SETAC Europe...

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作者： Köhler, Annette Loerincik, Yves Hertwich, Edgar Jolliet, Olivier Swiss Fed. Inst. of Technology Safety and Environ. Technology Group ETH-Hoenggerberg HCI CH 8093 Zurich Switzerland Ecl. Polytech. Federale de Lausanne Laboratory of Ecosystem Management EPFL CH-1015 Lausanne Switzerland Norwegian Univ. of Sci. and Technol. Dept. of Ener. and Proc. Engineering Program for Industrial Ecology K. Hejes vei 1a NO-7491 Trondheim Norway

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Nanocomposite rocket ablative materials: Subscale ablation test

Nanocomposite rocket ablative materials: Subscale ablation t...

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SAMPE 2004

作者： Koo, J.H. Stretz, H. Weispfenning, J. Luo, Z.P. Wootan, W. University of Texas at Austin Dept. of Mech. Engineering-C2200 Austin TX 78712-0292 Texas State University Inst. for Environ. and Indust. Sci. San Marcos TX 78666 Cytec Engineered Materials Winona MN 55987 Texas A and M University Microscopy and Imaging Center College Station TX 77843

The objective of this material development program is to develop a new class of nanostructured material that is lighter and has better erosion and insulation characteristics than current ablatives. Nanocomposite rocket ablative materials (NRAMs) exploit the ablation resistance of both the base resin and nanoparticles. Borden Chemical's SC-1008, a resole phenolic, was selected as the base resin for this study. Several nanoparticles such as montmorillonite (MMT) nanoclays, carbon nanofibers (CNFs), and polyhedral oligomeric silsesquioxane (POSS®) have been evaluated with the SC-1008 phenolic resin. Wide angle X-ray diffraction (WAXD) and transmission electron microscopy (TEM) were used as screening tools to determine the degree of dispersion before producing prepregs for testing. Several MX-4926 alternates were fabricated by replacing the carbon black filler with different nanoparticle loadings. A few NRAMs showed excellent erosion rate and heat-soaked temperature rise performance over the baseline MX-4926.

关键词： Carbon nanotubes

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Assessment for the complicated occurrence of nuisance odours from phytoplankton and environ.ental factors in a eutrophic lake

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Lakes and Reservoirs: sci.nce, Policy and Management for Sustainable Use 2004年第3-4期9卷 195-201页

作者： Sugiura, Norio Utsumi, Motoo Wei, Bin Iwami, Norio Okano, Kunihiro Kawauchi, Yukio Maekawa, Takaaki Inst. of Agricultural/Forest Eng. University of Tsukuba Tsukuba Japan Doctoral Program in Agric. Sci. University of Tsukuba Tsukuba Japan National Inst. for Environ. Studies Tsukuba Japan

Odours in waters used for various purposes, especially musty odours, is a worldwide problem. To establish an early warning system, the nuisance odour in an aquatic environ.ent, the causative microorganisms and compounds, and the mechanism of odour in Lake Kasumigaura, the second biggest lake in Japan, were examined using in situ studies. In this study, the mechanism for the occurrence of musty odours was determined, and the level of musty odour was discriminated, based on 32 months of phytoplankton data from three sampling stations. The results indicate that the cell numbers of Phormidium tenue, Synedra and Ankistrodesmus were significantly related to the occurrence of 2-methlisoborneol (MIB) and geosmin. Furthermore, the odour occurrence for both MIB and geosmin was effectively predicted and validated using environ.ental factors as explanatory variables, using multiple linear regression and artificial neural network technology.

关键词： 2-methlisoborneol Discriminant analysis Geosmin Phytoplankton Prediction

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Nanocomposite rocket ablative materials: Processing, microstructure, and performance

Nanocomposite rocket ablative materials: Processing, microst...

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Collect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.;12th AIAA/ASME/AHS Adapt. Struct. Conf.;6th AIAA Non-Deterministic Approaches Forum;5th AIAA Gossamer Spacecraft Forum

作者： Koo, Joseph H. Stretz, Holly Weispfenning, Jon T. Luo, Zhiping Wootan, Wilfred University of Texas at Austin Austin TX 78712-0292 Cytec Engineered Materials Winona MN 55987 Texas A and M University College Station TX 77843 Texas State University San Marcos TX 78666 Department of Mechanical Engineering 1 University Station C2200 Austin TX 78712-0292 Department of Chemical Engineering 1 University Station Austin TX 78712-0292 Ablative and C/C 501 West Third St. Winona MN 55987 Microscopy and Imaging Center BSBW 119 College Station TX 77843-2257 Inst. for Environ. and Indust. Sci. San Marcos TX 78669

The major objective of this material development program is to develop a lighter nanostructured material that has better erosion and insulation characteristics than current ablative materials used for solid rocket nozzles. Nanocomposite rocket ablative materials (NRAMs) exploit the ablation resistance of both the base resin and nanoparticles. Borden Chemical's SC-1008, a resole phenolic, was selected as the base resin for this study. Several nanoparticles such as montmorillonite (MMT) nanoclays, carbon nanofibers (CNFs), and polyhedral oligomeric silsesquioxane (POSS®) have been evaluated with the SC-1008 phenolic resin. Wide-angle X-ray diffraction (WAXD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM) were used as screening tools to determine the degree of dispersion before producing prepregs for testing. Several NRAMs were fabricated at Cytec Engineered Materials by replacing the carbon black filler with different nanoparticle loadings. A small-scale supersonic liquid-fueled rocket motor burning kerosene and oxygen was used to study the ablation and insulation characteristics of the ablatives. The simulated solid rocket motor (SSRM) has been demonstrated as a cost-effective, laboratory device to evaluate different ablatives under identical conditions for initial material screening and development. A few NRAMs showed excellent erosion rate and heat-soaked temperature rise performance over the baseline MX-4926.

关键词： Nanostructured materials

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Decision analysis utilizing data from multiple life-cycle impact assessment methods - Part II: Model development

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Journal of Industrial Ecology 2004年第1-2期8卷 119-141页

作者： Rahimi, Mansour Weidner, Merrill Daniel J. Epstein Dept. Indust. S. University of Southern California 3715 McClintock Ave. Los Angeles CA 90089-0193 United States Epstein Dept. Indust. and Syst. Eng. University of Southern California Los Angeles CA United States AT and T Indust. Ecol. Fac. Fellow Urban Initiative Fac. Fellow USC Dept. of Indust. and Syst. Eng. University of Southern California USC Environ. Sci. Plcy. and Eng. Sustainable Cities Program

In this (two-part) series of articles, we develop and present a series of life-cycle-assessment-based (LCA-based) decision analysis models, based on multiattribute value theory (MAVT), which utilize data from multiple life-cycle impact assessment (LCIA) methods and/or levels of analysis. In part I of this series, we began the task of developing a theoretically sound decision analysis methodology for accomplishing this. We also provided a preliminary introduction to the concept of proxy attributes, which are central to our overall methodological approach. In this part, we expand the decision analysis model developed previously to include (1) the combination of end-point indicators from multiple LCIA methods, (2) the combination of midpoint indicators, and (3) the combination of multiple end-point and midpoint damage indicators in a single decision model. In our models, we consider the LCIA damage indicators to be proxy attributes for actual consequences. In order to combine the LCIA indicators (as proxy attributes) from multiple methods, the decision maker must make a combination of value- and factual-based judgments concerning the actual consequences associated with the proxy attributes. We address the imprecise relationship between damage indicators and actual consequences in a way that we believe to be more appealing to most decision makers, based on linguistic variables (e.g., "much greater") represented as fuzzy variables. By utilizing the methodological approaches presented here and in part I, an LCA practitioner or decision maker can construct theoretically based decision models utilizing damage indicators (including both end points and midpoints) from any combination of LCIA methods. Given the inherent limits of LCIA, we believe that decision models developed on this basis provide for better and more informed decision making, through the explicit assessment and treatment of individual decision-maker preferences and the additional information provided through

关键词： Ecology

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