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Billion Ton Update: Commentary from study leads and US DOE

Industrial Biotechnology 2011年第5期7卷 381-383页

作者： Perlack, Robert D. Stokes, Bryce Bryan, Paul Ferrell, John Bioenergy Resource and Engineering Systems Group Environmental Sciences Division Oak Ridge National Laboratory United States Golden Field Office United States US DOE-Biomass Program United States

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Urban wet-weather flows

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Water Environment Research 2006年第10期78卷 1133-1192页

作者： Clark, Shirley E. Burian, Steven Pitt, Robert Field, Richard Department of Environmental Engineering School of Science Engineering and Technology Penn State Harrisburg 777 W. Harrisburg Pike TL-173 Middletown PA 17057 United States Department of Civil and Environmental Engineering University of Utah Department of Civil and Environmental Engineering University of Alabama Cudworth Professor of Urban Water Systems U.S. EPA Wet-Weather Flow Program Water Supply and Water Resources Division National Risk Management Research Laboratory - Cincinnati

This subject, Urban Wet-Weather Flows, is comprised of three basic subareas - combined-sewer overflows (CSOs), sanitary-sewer overflows (SSOs), and stormwater discharges. Major proceedings related to wet-weather flow (WWF) published during 2005 were the following: (1) WEFTEC 2005, 78th Annual Conference and Exposition (WEF, 2005);(2) Effective Modeling of Urban Stormwater systems, Monograph 13 (CHI, 2005);and (3) 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts (EWRI, 2005). In addition to the conferences listed above, the 2005 Annual Conference of the American Water Resources Association, EWRI's World Environment and Water Resources Congress the 10thInternational Conference on Urban Drainage had significant sessions on wet-weather flows. In addition, many regional conferences also had significant sessions on wet-weather flow issues, such as the 2005 Pennsylvania Stormwater Management Symposium. For all of these, no indexed paper proceedings had been indexed at the time that this literature review was prepared. Copyright © 2006 Water Environment Federation.

关键词： Flow of water

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Formation of Struvite Crystals in a Simulated Food Waste Aerobic Composting Process

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Chemical Research in Chinese Universities 2010年第2期26卷 210-216页

作者： DU Xian-yuan LIU Jian-lin HUANG Guo-he LI YU Energy and Environmental Research Centre North China Electric Power University Beo＇ing 102206 P. R. China College of Environment and Resources Jilin University Changchun 130012 P. R. China Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina SK S4S OA2 Canada

Bench-scale treatments with three mixtures of Mg and P salts, including K3PO4＋MgSO4, K2HPO4＋MgSO4, and KH2PO4＋MgSO4 as additives in a simulated food waste aerobic composting process, were conducted to test the magnesium ammonium phosphate（MAP） formation, and the compost products were analyzed by X-ray diffraction（XRD）, Scanning electron microscopy（SEM）, and Energy dispersive X-ray spectroscopy（EDS） analyses. The comparison results between XRD, SEM, and EDS analyses of MAPs in the dried compost and synthesized MAPs confirm the formation of MAP crystals in the simulated food waste aerobic composting process. The analysis of the compost also indicates that the addition of all the three mixtures of Mg and P salts in the aerobic composting process can increase nitrogen conservation and decrease nitrogen loss because of the formation of MAPs. The mechanism of MAP formation was verified as the reaction of ammonium（NH4＋） with magnesium（Mg^2＋） and phosphate[HnPO4^（3-n） , n=0, 1, and 2）.

关键词： Phosphate Magnesium sulphate Magnesium ammonium phosphate Food waste treatment Aerobic composting

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The power of sand: Can solid gravity close the energy storage gap?

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Journal of Energy Storage 2025年 125卷

作者： Julian David Hunt Behnam Zakeri Jakub Jurasz Yoshihide Wada Volker Krey Keywan Riahi Biological and Environmental Science and Engineering Division King Abdullah University of Science and Technology Thuwal 23955-6900 Saudi Arabia Institute for Data Energy and Sustainability (IDEaS) Vienna University of Economics and Business (WU) 1020 Vienna Austria Energy Climate and Environment (ECE) Program International Institute for Applied Systems Analysis (IIASA) 2361 Laxenburg Austria Faculty of Environmental Engineering Wrocław University of Science and Technology 50-370 Wrocław Poland

Transition to low-carbon energy systems primarily based on variable renewable energy, such as wind and solar, requires flexibility options, including energy storage. While batteries have dominated the market for short-term electricity storage, existing alternatives for long-duration energy storage are either site-specific, such as pumped hydropower storage (PHS), or lack the required supply infrastructure, such as green hydrogen and other synthetic fuels. We investigate the world's potential and project-specific cost of four emerging gravity energy storage technologies that are carbon-free and can be integrated into existing infrastructure: mountain gravity energy storage, electric truck gravity energy storage, underground energy storage, and lift energy storage technology. These electricity storage technologies can reach a levelized cost of (seasonal) energy storage as low as 94 USD MWh −1 and can store up to nearly 231 TWh of electricity globally (cf., the world's PHS total installed capacity is estimated to be 8.5–9 TWh today). Integrated gravity can play a role as long-duration energy storage in decarbonizing the energy sector and is a complementary solution to short-duration energy storage such as battery energy storage systems (BESS).

关键词： Climate change Energy innovation Energy transition and energy sustainability Geospatial energy analysis Gravitational energy storage Renewable energy markets Smart energy systems Smart grids and digital energy

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engineering project organization: defining a line of inquiry and a path forward

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engineering Project Organization Journal 2011年第1期1卷 3-10页

作者： Paul Chinowsky Civil Systems Program Department of Civil Environmental and Architectural Engineering University of Colorado

The formalization of a line of inquiry requires three elements: a foundational definition, an operational context and a path forward to guide researchers within the domain. In this initial Pathfinding paper, these elements are addressed for the engineering project organization line of inquiry. The field of engineering project organization research is put forth as a distinct pursuit within the overall field of organization research. In this distinct domain, engineering, social science, business and public policy are integrated as foundational pillars within the context of infrastructure development and the requirement to meet multiple levels of stakeholder requirements. The paper puts forth the argument that traditional perspectives of project-based organizations and project management are no longer sufficient to address the challenges of an evolving global economy, focus on environmental concerns and multi-cultural projects. Rather, it is necessary to forge a new path that embraces interdisciplinary perspec- tives as a basis for studying engineering organizations at all levels. From this basis, a path forward and a specific set of milestones are specified that should be measured and achieved by the engineering Project Organization community as it solidifies engineering project organization research as the next generation of interdisciplinary research within a project-based context. Finally, a charge is given to the community to collaborate while devel- oping novel insights and challenging entrenched beliefs and modes of inquiry in both industry and academia.

关键词： engineering organizations interdisciplinary research project organizations

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Development of innovative techniques for testing and mapping private well water quality

Development of innovative techniques for testing and mapping...

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2005 IEEE systems and Information engineering Design Symposium

作者： Cherry, Jeff Freel, Craig Hover, Brigitte Jones, Alison Sehgal, Akhil Louis, Garrick E. University of Virginia 151 Engineer's Way Charlottesville VA 22904 United States University of Virginia Department of Systems and Information Engineering University of Virginia School of Engineering and Applied Sciences McIntire School of Commerce Environmental Systems Engineering Program

ISBN: (纸本)0974455946

This paper documents the development of portable kit for testing and mapping water quality in the field, Previously, thorough testing and reporting on well water quality required multiple steps, including costly and time-consuming lab work that often made such testing impractical. To address this problem, a water sampling kit was created that consists of a pocket PC, a GPS receiver and probes to test for pollutants. The kit automatically records the geographical coordinates at the water sampling site, as well as the data collected by the probes into one spreadsheet. The data is then linked to a GIS for display in a simple and usable manner. The efficiency of the kit gives it the potential to create a new standard for sampling water, particularly in the case of private wells, which are currently inadequately monitored due to scarce state resources, This paper describes the process of researching, designing, and testing the water sampling system.

关键词： Water wells

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'Poka yoke' or quality by mistake proofing design and construction systems

'Poka yoke' or quality by mistake proofing design and constr...

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16th Annual Conference of the International Group for Lean Construction, IGLC16

作者： Tommelein, Iris D. Project Production Systems Laboratory United States Engineering and Project Management Program Civil and Environmental Engineering Department University of California Berkeley CA 94720-1712 United States

ISBN: (纸本)9781905732456

The Japanese concept 'poka yoke', translated into English as 'mistake proofing,' has been mentioned at previous IGLC conferences. This notwithstanding, mistake proofing appears to not have been (nor be) systematically researched or practiced in the lean construction community. To raise awareness of opportunities provided by thinking with mistake proofing in mind as a means to build quality into project delivery, this paper summarizes the philosophy that underlies mistake proofing. Examples illustrate how mistake proofing applies to the work done within one specialty trade, how manufacturers and fabricators can design their products so they cannot be constructed defectively, and how architects and engineers may conceive of system designs that are less likely to fail during construction or in a product's life cycle. Reader contributions to an online repository of mistake proofing applications in the architecture-engineering-construction (AEC) industry, posted at http://***/pokayoke/, will be gratefully acknowledged.

关键词： Image quality

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Design and prototype development of advanced oxidation black and gray water treatment systems

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NAVAL ENGINEERS JOURNAL 2006年第3期118卷 51-64页

作者： Markle, Stephen P. CDR. STEPHEN P. MARKLE USN (REt.)P.E.a retired US Navy Engineering Duty Officer and is the Engineering Director for Navalis Environmental Systems. His active duty assignments included the staff of the Chief of Naval Operations Director of Surface Warfare as Section Head for Surface Combatant Maintenance and Modernization Program Executive Office Expeditionary Warfare as Assistant Project Manager for the (TAKE 1)Class Program and as Deputy Director Environmental Programs Division at Naval Sea Systems Command. He is a 1993 graduate of the Naval Construction and Engineering Program at the Massachusetts Institute of Technology where he received a Naval Engineers Degree and Master of Science in Mechanical Engineering. Since 1995 he has authored thirteen published technical papers dealing with environmental issues. CDR Markle is the recipient of Fiscal Year 2001 Individual Environmental Quality Awards and Environmental Excellence in Weapon System Acquisition Team Awards from Naval Sea Systems Command Chief of Naval Operations Secretary of the Navy and Secretary of Defense and the 2001 ASNE “Jimmie Hamilton” award. He is a Professional Engineer registered in the State of New York and Commonwealth of Virginia. He serves as the Chair of the Joint ASNE/SNAME Committee on Environmental Engineering and also as Chair of ASTM Ships and Marine Technology Marine Environmental Protection Subcommittee (F25.06).

Regulations governing the discharge of sewage from ships have been in force since the early 1970's. In response, the marine industry has developed ever more complex systems and processes for managing these wastes. The first compliance method involved holding wastes until they could be legally discharged;as technology advanced, treatment systems were developed and installed to enable discharge within regulated waters. As the size and number of ships as increased with maturation of the ocean tourism business, more restrictive regulations have been enacted to minimize the impact on sensitive waters. The trend is toward increasing regulation of both sewage and graywater. The most recent action occurred on 12 October 2005 when the Governor of California signed into law Senate Bill 771 regulating most ship liquid discharges within state waters. This paper describes the development of an innovative advanced wastewater treatment technology, based on advanced oxidation, bearing in mind the lessons learned from systems developed by industry over the past thirty years.

关键词： Wastewater treatment

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Modelling and Control of a Virtual Skydiver

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IFAC-PapersOnLine 2017年第1期50卷 369-374页

作者： Clarke A. Gutman P.-O. Technion Autonomous Systems Program Technion - Israel Institute of Technology Haifa 32000 Israel Faculty of Civil and Environmental Engineering Technion – Israel Institute of Technology Haifa 32000 Israel

An innovative approach of gaining an insight into motor skills involved in human body flight is proposed. Body flight is the art of maneuvering during the free fall stage of skydiving, which is a rapidly developing sport. The key idea is creating an autonomous system capable of performing skydiving maneuvers in a virtual way, and turning it into a powerful tool for improving instruction methods. Towards this goal, the Skydiver Simulator is developed, comprising Biomechanical, Aerodynamic, and Kinematic Models, Dynamic Equations of Motion, and a Virtual Reality Environment. A Two-Input-Two-Output controller is designed to track the desired inertial motion, producing commands in terms of limbs movements. The natural kinematic redundancy of the human body is resolved by introducing movement patterns, constructed according to ergonomic considerations and empirical knowledge of how skydiving maneuvers are performed. The controller is designed with the use of Quantitative Feedback Theory, providing robustness for dealing with plant non-linearities and inaccurate execution of the movement patterns. The skydiver simulator allowed reconstruction of many challenging aspects of body-flight observed by practicing skydivers. The virtual skydiver, comprising a controller and a guidance algorithm, was shown to autonomously perform meaningful body flight missions. © 2017

关键词： autonomous systems dynamic modeling feedback control methods simulators

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Development of a municipal solid waste management model from the persective under uncertainty

Development of a municipal solid waste management model from...

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2019 Canadian Society for Civil engineering Annual Conference, CSCE 2019

作者： Yin, Jianan Huang, Guohe An, Chunjiang Research Assistant Environmental Systems Engineering Program Faculty of Engineering University of Regina ReginaSask.S4S 0A2 Canada Professor and Canada Research Chair Environmental Systems Engineering Program Faculty of Engineering University of Regina ReginaSask.S4S 0A2 Canada Assistant Professor Building Civil and Environmental Engineering Concordia University MontrealQCH3G 1M8 Canada

In this study, an interval two-stage stochastic programming (ITSP) method is proposed for regional solid waste system management system under uncertainty. The ITSP approach can incorporate random events with punishment policies when the promised allowable waste loading is exceeded. An ITSP-based solid waste system management model is developed with an objective of minimizing economic cost in landfill and waste-to-energy (WTE) facility, which include operation, transportation, expansion costs and revenue. A case study in the city of Baotou, China is developed to manage the solid waste system. Three scenarios associated with different economic incentives are employed for analyzing the optimized solutions based on the preference of decision-makers. Under scenario without subsidy, the total system cost would be from 164.13 to 234.37 million yuan, however, due to the national policy subsidies, WTE would make profit and the total system cost would be negative (e.g. from -83.15 to -17.66 million yuan). The results indicated that a higher waste flow to landfill corresponds with a higher system cost, while more wastes transported to WTE facility lead to a lower economic cost. Financial subsidies for WTE facility could compensate the system loss and promote garbage resource utilization to some extent. � 2019 Canadian Society for Civil engineering. All rights reserved.

关键词： Land fill

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