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The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1015-1024 doi: 10.1007/s11783-014-0670-0

Abstract: In order to appraise land area types with different levels of productivity, they introduced the conceptThis relates to the average primary biomass productivities of different types of land (i.e. arable landbiomass productivity of all land types in a given year.Secondly, China’s equivalence factor for 6 land area types was calculated based on NPP: arable land andtypes in different provinces was also calculated.

Keywords： ecological footprint     equivalence factor     net primary production     biological capacity     land types    

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Nucleate boiling in two types of vertical narrow channels

Lei GUO, Shusheng ZHANG, Lin CHENG

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 250-256 doi: 10.1007/s11708-010-0128-4

Abstract: To explore the mechanism of boiling bubble dynamics in narrow channels, we investigate 2-mm wide I- and Z-shaped channels. The influence of wall contact angle on bubble generation and growth is studied using numerical simulation. The relationships between different channel shapes and the pressure drop are also examined, taking into account the effects of gravity, surface tension, and wall adhesion. The wall contact angle imposes considerable influence over the morphology of bubbles. The smaller the wall contact angle, the rounder the bubbles, and the less time the bubbles take to depart from the wall. Otherwise, the bubbles experience more difficulty in departure. Variations in the contact angle also affect the heat transfer coefficient. The greater the wall contact angle, the larger the bubble-covered area. Therefore, wall thermal resistance increases, bubble nucleation is suppressed, and the heat transfer coefficient is lowered. The role of surface tension in boiling heat transfer is considerably more important than that of gravity in narrow channels. The generation of bubbles dramatically disturbs the boundary layer, and the bubble bottom micro-layer can enhance heat transfer. The heat transfer coefficient of Z-shaped channels is larger than that of the I-shaped type, and the pressure drop of the former is clearly higher.

Keywords： nucleate boiling     narrow channel     numerical simulation     bubble dynamics    

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Current Status, Challenges, and Prospects for New Types of Aerial Robots

Xidong Zhou,Hang Zhong,Hui Zhang,Wei He,Hean Hua,Yaonan Wang,

Engineering doi: 10.1016/j.eng.2024.05.008

Abstract: New types of aerial robots (NTARs) have found extensive applications in the military, civilian contexts

Keywords： Aerial robot     Morphability     Biomimicry     Perch     Amphibious     Antibody response    

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Chemodiversity of soil dissolved organic matter affected by contrasting microplastics from different types

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 12, doi: 10.1007/s11783-023-1753-6

Abstract:

● Microplastics (MPs) decreased the protein/amino sugars and increased the lipids.

Keywords： Microplastics     Dissolved organic matter     FT-ICR MS     Chemodiversity     Molecular signature    

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Advanced Reactor Types and China’s Nuclear Power Industry

Hu Yalei

Strategic Study of CAE 2005, Volume 7, Issue 11,   Pages 98-102

Abstract:

This article describes the four generation of reactor types.Firstly, it looks back the development of the 1st. and 2nd. generation reactor types; Secondly, explainsthe development and the design characteristics of several typical 3rd generation advanced reactor types

Keywords： advanced reactor types     China’s nuclear power industry    

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Effects of different types of biochar on the properties and reactivity of nano zero-valent iron in soil

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1388-4

Abstract:

• Biochar enhanced the mobility and stability of zero-valent iron nanoparticles.

Keywords： Nano zero-valent iron     Biochar     BDE209     Transport     Soil    

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Exploring differentiated improvement strategies of cultivated land quality in China RESEARCH ARTICLE

Frontiers of Agricultural Science and Engineering 2024, Volume 11, Issue 2,   Pages 282-291 doi: 10.15302/J-FASE-2023523

Abstract:

Quality is the core feature of cultivated land.In the face of deteriorating cultivated land quality and growing food demand, improving cultivated landCultivated land quality in the new era can be considered in four dimensions: suitability, contiguity,Cultivated land suitability in China shows a decreasing trend from east to west, cultivated land contiguityCultivated land with ecological stress is mainly located in the northern region.

Keywords： China     cultivated land quality     differentiated improvement     food security    

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Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 411-434 doi: 10.1007/s11709-019-0602-y

Abstract: experimental campaign of mechanical characterization tests of infill masonry walls made with three different typesFour different types of experimental tests were carried out, namely: compression strength tests, diagonal

Keywords： masonry infill walls     experimental characterization     compression strength     shear diagonal strength     flexural strength    

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Effect of land use and land cover change on soil erosion and the spatio-temporal variation in Liupan

Bin QUAN, M. J. M. R?MKENS, Rui LI, Fang WANG, Jie CHEN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 564-572 doi: 10.1007/s11783-011-0348-9

Abstract: damage over time due to population pressure, excessive demand and inappropriate use of agricultural landTo present the relationship between land use/cover change and spatio-temporal variation of soil erosionAlso, soil erosion in response to land use and land cover change were quantified and analyzed using dataModerate, severe, and very severe eroded areas accounted for 54.86% of the total land area.Soil erosion was severe on grassland with a moderate or low grass cover and on dry land.

Keywords： land use/land cover change     soil erosion     geographical information system     remote sensing     Liupan Mountain    

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Vehicle-bridge coupled vibrations in different types of cable stayed bridges

Lingbo WANG,Peiwen JIANG,Zhentao HUI,Yinping MA,Kai LIU,Xin KANG

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 81-92 doi: 10.1007/s11709-015-0306-x

Abstract: Numerical analyses of the coupled vibrations of vehicle-bridge system and the effects of different typesCompared to other types of cable stayed bridges, the floating bridge system has relatively high possibility

Keywords： vehicle-bridge coupled vibration     cable stayed bridge     resonances of vehicle-bridge system    

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Evaluating heavy metal contamination of riverine sediment cores in different land-use areas

Wenzhong Tang, Liu Sun, Limin Shu, Chuang Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1283-4

Abstract: Abstract • Metal pollution was studied in riverine sediments from different land-use areas. • Cd wasregarded as the main sources of heavy metal pollution, yet few studies have investigated the effects of land-useheavy metal pollution, risk and toxicity were determined in riverine sediment cores from different land-use

Keywords： Heavy metals     Riverine sediments     Pollution     Land-use    

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Field scale measurement of greenhouse gas emissions from land applied swine manure

Devin L. Maurer, Jacek A. Koziel, Kelsey Bruning

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0915-9

Abstract: ) from swine production systems are relatively well researched with the exception of emissions from landThus, the objective of this observational study was to measure GHG fluxes from land application of swineAssessment of GHG emissions from deep injected land-applied swine manure, fall and reapplication in the

Keywords： Climate change     Emissions     Greenhouse gases     Land application     Swine manure    

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Optimization of Land-use Based on the Theory of Cellular Automata and Value of Ecosystem Services

Lian-fu Jiang,Guo-xian Xu,Hao Jiang

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 395-401 doi: 10.15302/J-FEM-2014058

Abstract: The land utilization condition in the target city was simulated using Arc GIS and Geo SOS software basing

Keywords： Ecosystem service function     optimization of land use     Cellular Automata (CA)    

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Simulation of soil carbon changes due to land use change in urban areas in China

Cui HAO, Jo SMITH, Jiahua ZHANG, Weiqing MENG, Hongyuan LI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 255-266 doi: 10.1007/s11783-013-0485-4

Abstract: Land use change can have a strong impact on soil carbon dynamics and carbon stocks in urban areas.Due to rapid urbanization, large areas of land have been paved, and other areas have undergone rapidland use change.The soil carbon dynamics, due to rapid land use change in Tianjin Binhai New Area of China, have beenlosses from the soils due to previous land use changes.

Keywords： land use change     soil carbon     RothC     urban area    

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A family of non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems

Guizhong XIE, Fenglin ZHOU, Hao LI, Xiaoyu WEN, Fannian MENG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 332-341 doi: 10.1007/s11465-019-0540-3

Abstract: This study focuses on establishing non-conforming crack front elements of quadrilateral and triangular types

Keywords： Taylor expansion     crack front elements     stress intensity factors     dual boundary element method    

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Title Author Date Type Operation

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Journal Article

Nucleate boiling in two types of vertical narrow channels

Lei GUO, Shusheng ZHANG, Lin CHENG

Journal Article

Current Status, Challenges, and Prospects for New Types of Aerial Robots

Xidong Zhou,Hang Zhong,Hui Zhang,Wei He,Hean Hua,Yaonan Wang,

Journal Article

Chemodiversity of soil dissolved organic matter affected by contrasting microplastics from different types

Journal Article

Advanced Reactor Types and China’s Nuclear Power Industry

Hu Yalei

Journal Article

Effects of different types of biochar on the properties and reactivity of nano zero-valent iron in soil

Journal Article

Exploring differentiated improvement strategies of cultivated land quality in China

Journal Article

Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Journal Article

Effect of land use and land cover change on soil erosion and the spatio-temporal variation in Liupan

Bin QUAN, M. J. M. R?MKENS, Rui LI, Fang WANG, Jie CHEN

Journal Article

Vehicle-bridge coupled vibrations in different types of cable stayed bridges

Lingbo WANG,Peiwen JIANG,Zhentao HUI,Yinping MA,Kai LIU,Xin KANG

Journal Article

Evaluating heavy metal contamination of riverine sediment cores in different land-use areas

Wenzhong Tang, Liu Sun, Limin Shu, Chuang Wang

Journal Article

Field scale measurement of greenhouse gas emissions from land applied swine manure

Devin L. Maurer, Jacek A. Koziel, Kelsey Bruning

Journal Article

Optimization of Land-use Based on the Theory of Cellular Automata and Value of Ecosystem Services

Lian-fu Jiang,Guo-xian Xu,Hao Jiang

Journal Article

Simulation of soil carbon changes due to land use change in urban areas in China

Cui HAO, Jo SMITH, Jiahua ZHANG, Weiqing MENG, Hongyuan LI

Journal Article

A family of non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems

Guizhong XIE, Fenglin ZHOU, Hao LI, Xiaoyu WEN, Fannian MENG

Journal Article