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Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid waste incinerators

LIANG Shunwen, JIANG Jianguo, ZHANG Yan, XU Xin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 358-363 doi: 10.1007/s11783-008-0060-6

Abstract: heavy metals such as Cd, Pb, Cu, and Zn in fly ash from such incinerators was examined through the nationalstandard method in China based on the following factors: additive quantity of cement and NaS, curingThe mass ratio of cement to fly ash = 10% is the most appropriate parameter according to the nationalstandard method.

Keywords： heavy     national standard     environmental     leachate     liquor    

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Research on the ecological compensation standard of the basin pollution control project based on evolutionary

Dongbin HU, Huiwu LIU, Xiaohong CHEN, Yang CHEN

Frontiers of Engineering Management 2019, Volume 6, Issue 4,   Pages 575-583 doi: 10.1007/s42524-019-0044-1

Abstract: Ecological compensation is a new resource and environment management model. As one of the main areas for implementing ecological compensation policies, basin ecological compensation has become an important measure for encouraging basin pollution control projects and improving the quality of regional economic development. By applying the basic game analysis of evolutionary game theory and building an evolutionary game model with a “reward–punishment” mechanism, this paper compares the interest-related decision-making behaviors of the upstream and downstream stakeholders of basin ecological compensation. By using data on the water quality of Xiangjiang River Basin, this paper calculates the rewards and penalties in different intervals by building a parametric regression mathematical model and employing the local linear regression method. Results show that a decline in water quality should be fined RMB 925500 yuan, an improvement in water quality should be awarded RMB 1227800 yuan, and a deteriorating water quality should be severely fined RMB 5087600 yuan.

Keywords： evolutionary game     ecological compensation standard     Xiangjiang River Basin    

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Standard model of knowledge representation

Wensheng YIN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 3,   Pages 275-288 doi: 10.1007/s11465-016-0372-3

Abstract: According to ontology, system theory, and control theory, a standard model of knowledge representationIn addition, the standard model of knowledge representation provides a way to solve problems of non-precision

Keywords： knowledge representation     standard model     ontology     system theory     control theory     multidimensional representation    

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Overview of the quality standard research of traditional Chinese medicine

Huimin Gao, Zhimin Wang, Yujuan Li, Zhongzhi Qian

Frontiers of Medicine 2011, Volume 5, Issue 2,   Pages 195-202 doi: 10.1007/s11684-011-0134-x

Abstract: In this review, the progress of the development and the current status of quality standard as well as

Keywords： traditional Chinese medicine     quality standard     quality control     quantitative analysis of multi-components    

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A Standard for the Commissioning Process

William L. Gillis,Elizabeth A. Cudney

Frontiers of Engineering Management 2015, Volume 2, Issue 1,   Pages 39-51 doi: 10.15302/J-FEM-2015006

Abstract: four-phase model can accomplish this by filling the gaps among the major Cx activities and provide a standardinvestigates some potential reasons for inconsistent Cx services, presents an argument for the need of a Cx standard, and proposes a potential standard.

Keywords： construction     engineering management     quality     commissioning    

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Green Construction of National Speed Skating Oval

Frontiers of Engineering Management 2022, Volume 9, Issue 1,   Pages 170-176 doi: 10.1007/s42524-021-0177-x

Keywords： Direct-cooling Ice Making System     dynamic high-precision construction measurement     green construction     National    

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Quantitative standard of eco-compensation for the water source area in the middle route of the South-to-North

Zhanfeng DONG, Jinnan WANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 459-473 doi: 10.1007/s11783-010-0288-9

Abstract: This paper establishes an analytic framework of eco-compensation standard for the protection of the water

Keywords： the South-to-North Water Transfer Scheme     eco-compensation standard     opportunity costs     deviation square    

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Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 579-589 doi: 10.1007/s11708-018-0557-z

Abstract: This paper establishes an irreversible Dual-Miller cycle (DMC) model with the heat transfer (HT) loss, friction loss (FL) and other internal irreversible losses. To analyze the effects of the cut-off ratio ( ) and Miller cycle ratio ( ) on the power output ( ), thermal efficiency ( ) and ecological function ( ), obtain the optimal and optimal , and compare the performance characteristics of DMC with its simplified cycles and with different optimization objective functions, the , and of irreversible DMC are analyzed and optimized by applying the finite time thermodynamic (FTT) theory. Expressions of , and are derived. The relationships among , , and compression ratio ( ) are obtained by numerical examples. The effects of and on , , , maximum power output ( ), maximum efficiency ( ) and maximum ecological function ( ) are analyzed. Performance differences among the DMC, the Otto cycle (OC), the Dual cycle (DDC), and the Otto-Miller cycle (OMC) are compared for fixed design parameters. Performance characteristics of irreversible DMC with the choice of , and as optimization objective functions are analyzed and compared. The results show that the irreversible DMC engine can reach a twice-maximum power, a twice-maximum efficiency, and a twice-maximum ecological function, respectively. Moreover, when choosing as the optimization objective, there is a 5.2% of improvement in while there is a drop of only 2.7% in compared to choosing as the optimization objective. However, there is a 5.6% of improvement in while there is a drop of only 1.3% in compared to choosing as the optimization objective.

Keywords： finite-time thermodynamics     Dual-Miller cycle     power output     thermal efficiency     ecological function    

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Achievements of the national malaria control and elimination program in the People’s Republic of China

Frontiers of Medicine 2023, Volume 17, Issue 1,   Pages 85-92 doi: 10.1007/s11684-021-0917-7

Abstract: provinces of China since 1950, to assess the changes in malaria epidemic patterns from 1950 to 2019 at nationalthan 130 charts, consisting of introductory maps, thematic maps of malaria epidemic and control at nationalobjectively and directly shows the epidemic history, evolution process, and great achievements of the nationalThe Atlas has important reference value for summing up historical experience in the national malaria

Keywords： malaria     transmission     control     elimination     China     atlas    

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High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1743-1750 doi: 10.1007/s11705-022-2184-9

Abstract: The standard enthalpy of formation is an important predictor of the reaction heat of a chemical reactionIn this work, a high-precision method was developed to calculate accurate standard enthalpies of formation

Keywords： standard enthalpy of formation     polycyclic aromatic hydrocarbons     connectivity based hierarchy     high-precision    

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Punching of reinforced concrete slab without shear reinforcement: Standard models and new proposal

Luisa PANI, Flavio STOCHINO

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1196-1214 doi: 10.1007/s11709-020-0662-z

Abstract: Reinforced concrete (RC) slabs are characterized by reduced construction time, versatility, and easier space partitioning. Their structural behavior is not straightforward and, specifically, punching shear strength is a current research topic. In this study an experimental database of 113 RC slabs without shear reinforcement under punching loads was compiled using data available in the literature. A sensitivity analysis of the parameters involved in the punching shear strength assessment was conducted, which highlighted the importance of the flexural reinforcement that are not typically considered for punching shear strength. After a discussion of the current international standards, a new proposed model for punching shear strength and rotation of RC slabs without shear reinforcement was discussed. It was based on a simplified load-rotation curve and new failure criteria that takes into account the flexural reinforcement effects. This experimental database was used to validate the approaches of the current international standards as well as the new proposed model. The latter proved to be a potentially useful design tool.

Keywords： punching shear strength     reinforced concrete     slabs     reinforcement ratio    

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Study on explanation standard of oil’s gas and water layers of A block in Daqing Oilfield

Xu Tong

Strategic Study of CAE 2012, Volume 14, Issue 4,   Pages 83-87

Abstract: that is lithology, physical character, oil-bearing and resistivity , and established the explanation standardlogging curve values and the curve with the highest coincidence rate was chosen as final explanation standard

Keywords： “four characters”     coring     testing     logging     explanation standard    

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Experience and Inspiration from Construction of United States National Parks and Gateway Communities

Liu Huiliang

Strategic Study of CAE 2016, Volume 18, Issue 5,   Pages 100-108 doi: 10.15302/J-SSCAE-2016.05.014

Abstract:

This year is the one-hundredth-year anniversary of the United States National Park Service (US NPSOver the last one hundred years, the national park system of the United States had become an importantnational asset that had played a significant role in stimulating economic development and growth aspaper focuses the discussion on the interdependent relationship between the gateway communities and the nationalThis paper uses Rocky Mountain National Park (RMNP) and the town of Estes Park, RNMP's main gateway

Keywords： US National Park Service     gateway communities     Rocky Mountain National Park     the town of Estes Park    

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Contribution of national bioassessment approaches for assessing ecological water security: an AUSRIVAS

Susan J. NICHOLS, Fiona J. DYER

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 669-687 doi: 10.1007/s11783-013-0556-6

Abstract: River managers in Australia are managing in the face of extremes to provide security of water supply for people, production and the environment. Balancing the water requirements of people, environments and economies requires that water security is viewed holistically, not just in terms of the water available for human consumption. Common definitions of water security focus on the needs of both humans and ecosystems for purposes such as drinking, agriculture and industrial use, and to maintain ecological values. Information about achieving water security for the environment or ecological purposes can be a challenge to interpret because the watering requirements of key ecological processes or assets are not well understood, and the links between ecological and human values are often not obvious to water users. Yet the concepts surrounding river health are inherently linked to holistic concepts of water security. The measurement of aquatic biota provides a valuable tool for managers to understand progress toward achieving ecological water security objectives. This paper provides a comprehensive review of the reference condition approach to river health assessment, using the development of the Australian River Assessment System (AUSRIVAS) as a case study. We make the link between the biological assessment of river health and assessment of ecological water security, and suggest that such an approach provides a way of reporting that is relevant to the contribution made by ecosystems to water security. The reference condition approach, which is the condition representative of minimally disturbed sites organized by selected physical, chemical, and biological characteristics, is most important for assessing ecological water security objectives.

Keywords： ecological water security     biological assessment     river health    

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Current research, key performances and future development of search and rescue robots

LIU Jinguo, WANG Yuechao, LI Bin, MA Shugen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 404-416 doi: 10.1007/s11465-007-0070-2

Abstract: Disaster prevention, disaster reduction and disaster rescue are the important parts of national publicSearch and rescue robotic technique is an urgent needed, strategic and core technique for national developmentIt will be important and strategic for national economy and safety.

Keywords： national development     communicability     mobility     national     intelligent network    

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Title Author Date Type Operation

Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid waste incinerators

LIANG Shunwen, JIANG Jianguo, ZHANG Yan, XU Xin

Journal Article

Research on the ecological compensation standard of the basin pollution control project based on evolutionary

Dongbin HU, Huiwu LIU, Xiaohong CHEN, Yang CHEN

Journal Article

Standard model of knowledge representation

Wensheng YIN

Journal Article

Overview of the quality standard research of traditional Chinese medicine

Huimin Gao, Zhimin Wang, Yujuan Li, Zhongzhi Qian

Journal Article

A Standard for the Commissioning Process

William L. Gillis,Elizabeth A. Cudney

Journal Article

Green Construction of National Speed Skating Oval

Journal Article

Quantitative standard of eco-compensation for the water source area in the middle route of the South-to-North

Zhanfeng DONG, Jinnan WANG

Journal Article

Optimization of the power, efficiency and ecological function for an air-standard irreversible Dual-Miller

Zhixiang WU, Lingen CHEN, Yanlin GE, Fengrui SUN

Journal Article

Achievements of the national malaria control and elimination program in the People’s Republic of China

Journal Article

High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general

Journal Article

Punching of reinforced concrete slab without shear reinforcement: Standard models and new proposal

Luisa PANI, Flavio STOCHINO

Journal Article

Study on explanation standard of oil’s gas and water layers of A block in Daqing Oilfield

Xu Tong

Journal Article

Experience and Inspiration from Construction of United States National Parks and Gateway Communities

Liu Huiliang

Journal Article

Contribution of national bioassessment approaches for assessing ecological water security: an AUSRIVAS

Susan J. NICHOLS, Fiona J. DYER

Journal Article

Current research, key performances and future development of search and rescue robots

LIU Jinguo, WANG Yuechao, LI Bin, MA Shugen

Journal Article