Resource Type

Journal Article 202

Conference Videos 5

Year

2023 13

2022 24

2021 14

2020 3

2019 9

2018 14

2017 7

2016 13

2015 6

2014 6

2013 29

2012 5

2011 13

2010 12

2009 8

2008 5

2007 5

2006 2

2005 1

2004 1

open ︾

Keywords

the Fourth Nanjing Yangtze River Bridge 4

Pearl River Delta 3

Urban river 3

China 2

Climate change 2

Distribution 2

Environmental flow 2

Jiulong River 2

Liaohe River basin 2

Yangtze River 2

Yangtze River Delta 2

Yellow River Basin 2

anchorage 2

construction 2

fish 2

governance 2

high-quality development 2

management 2

nutrients 2

open ︾

Search scope:

排序： Display mode:

Analysis and assessment of heavy metal contamination in surface water and sediments: a case study from LuanRiver, Northern China

Zhaoming WANG,Ranhao SUN,Haiping ZHANG,Liding CHEN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 240-249 doi: 10.1007/s11783-014-0646-0

Abstract: of the heavy metals Cu, Ni, Pb, Zn, Cd, and Cr were examined in surface water and sediment from the LuanRiver inChina,.The values revealed that Cd (3.13) and Cr (2.39) had accumulated significantly in the Luan River.values for most (89%) of the sampling stations were higher than 300, suggesting that sediment from the LuanRiver poses a severe ecological risk, with the potential ecological risks downstream higher than that

Keywords： heavy metal     water     sediment     geo-accumulation index     Luan River    

HTML PDF Collect

Structural design and construction of catway for the Fourth Nanjing Yangtze River Bridge

Luan Changhua, Shen Bin

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 48-53

Abstract:

The Fourth Nanjing Yangtze River Bridge is a two-tower, three-span suspension

Keywords： the Fourth Nanjing Yangtze River Bridge     catway structural design     catway erection     catway adjustment    

HTML PDF Collect

Speciation evolutions of target metals (Cd, Pb) influenced by chlorine and sulfur during sewage sludge incineration

Jingde LUAN,Rundong LI,Zhihui ZHANG,Yanlong LI,Yun ZHAO

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 871-876 doi: 10.1007/s11783-013-0621-1

Abstract: In sludge incineration, the thermal behavior of heavy metal is a growing concern. In this work, the combined analysis of metal partitioning behavior between vapor phase and condensed phase, speciation redistribution in condensed phase and the difference of metal species in binding energy was carried out to investigate the possible volatilization-condensation mechanism of heavy metals in high-temperature sludge incineration. It was found that there were two steps in metal volatilization. The initial volatilization of heavy metal originated from their exchangeable (EXC), carbonate bound (CAR) and iron–manganese bound (FM) fractions, which is primarily composed of simple substance, chlorides, oxides and sulfides. With the increase of chlorine and sulfur in sludge, the inner speciation redistribution of heavy metals occurred in condensed phase, which was an important factor affecting the potential volatility of heavy metals. A partial of metal species with complexed (COM) and residual (RES) fractions gradually decomposed into simple substance or ions, oxides and carbonates, which significantly strengthened the second volatility. In presence of chlorine, about 46% of Cd with the RES fraction disappeared when the volatility rate of Cd increased by 44.89%. Moreover, about 9% of Pb with COM fraction disappeared when there was an increase of nearly 10% in the volatilization rate. Thus, the second volatilization was mainly controlled by the decomposition of metal species with COM and RES fractions. By virtue of XRD analysis and the binding energy calculation, it was found that metal complex and silicates were inclined to decompose under high temperature due to poor thermo stability as compared with sulfates.

Keywords： sludge incineration     heavy metals     inner speciation redistribution     binding energy    

HTML PDF Collect

Flexible liquid metal coil prepared for electromagnetic energy harvesting and wireless charging

Shen GUO, Peng WANG, Jichuan ZHANG, Wenpeng LUAN, Zishuo XIA, Lingxiao CAO, Zhizhu HE

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 474-482 doi: 10.1007/s11708-019-0632-0

Abstract: This paper reported a study on a flexible liquid metal coil (LMC) for electromagnetic collection from the transmission line for self-powered sensor and electromagnetic generation for wireless charging of cellular telephone. The room temperature liquid metal of Galinstan was perfused to elastic silicone tube, which is then terminated with gallium-plated copper wire. The as-prepared liquid metal wire can sustain stretching, twisting, and bending with large deformation, and has a good electrical contact stability with the external circuit. The LMC based magnetic energy harvester was then designed and demonstrated to collect the magnetic field energy induced by a wire carrying alternating current. The power of 260 mW was obtained for the wire carrying current of 10 A. The flexible toroidal inductor was fabricated and tested for magnetic energy harvesting. The flexible spiral-shaped LMC was also designed and demonstrated to power cellular telephone through wireless charging. The present study opens the way for further applications of elastic LMC in electromagnetic energy harvesting and charging.

Keywords： liquid metal     Galinstan     flexible coil     electromagnetic energy harvesting     wireless charging    

HTML PDF Collect

Computation model for corrosion resistance of nanocrystalline zircaloy-4

ZHANG Xiyan, ZHU Yutao, LIU Qing, LUAN Baifeng, HUANG Guangjie, LI Cong, ZHANG Xiyan, SHI Minghua, LIU

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 386-389 doi: 10.1007/s11708-008-0102-6

Abstract: A computation model of the corrosion rate versus grain size of nanocrystalline zircaloy-4 was presented. The influence of the second phase on the conductivity of alloy was considered. By this model, the corrosion rate of nanocrystalline zircaloy-4 at different temperature was calculated. The results show that the corrosion rate constant and weight gain of nanocrystalline zircaloy-4 decrease with the decrease of grain size, and that the corrosion weight gain of nanocrystalline zircaloy-4 is less than that of zircaloy-4 of coarse grain. The computational result is coincident with the experimental result.

Keywords： corrosion     constant     corrosion weight     weight     influence    

HTML PDF Collect

Multi-scale evaluation of river health in Liao River Basin, China

Fei XU, Yanwei ZHAO, Zhifeng YANG, Yuan ZHANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 227-235 doi: 10.1007/s11783-010-0219-9

Abstract: Previous studies on river health evaluation mainly focused on characterizations at a river-corridor scaleand ignored the complex interactions between the river ecosystem and other components of the river basinBased on the consideration of the interactions among rivers, associated river basin and habitats, an’s Liao River Basin was established.basin, were the main causes of the river health deterioration.

Keywords： multi-scale characterization     river health evaluation     Liao River Basin     set pair analysis    

HTML PDF Collect

Performance of a Hierarchically Nanostructured W–Cu Composite Produced via Mediating Phase Separation Article

Chao Hou, Hao Lu, Zhi Zhao, Xintao Huang, Tielong Han, Junhua Luan, Zengbao Jiao, Xiaoyan Song, Zuoren

Engineering 2023, Volume 26, Issue 7,   Pages 173-184 doi: 10.1016/j.eng.2022.09.017

Abstract:

The challenge of fabricating nanostructured W–Cu composites by powder metallurgy has been solved by means of modulated phase separation. A hierarchically nanostructured (HN) W–Cu composite was prepared using intermediary Al through sluggish asynchronous phase separation. In addition to a dual network composed of a Cu phase and the W–Cu nanostructure, dense Al-containing nanoprecipitates with a body-centered cubic (bcc) structure are distributed in the W matrix. Compared with a pristine W/Cu interface, the newly formed W/Cu interfaces modulated by Al and the coherent W/Al-containing particle interfaces possess lower energy and enhanced bonding strength due to efficient electron transfer and strong coupling interactions. With a large number of stable heterogeneous interfaces and a "self-locking" geometry, the HN W–Cu composite exhibits excellent resistance against plastic deformation. The combination of the presented composite's hardness and compressive strength outperforms all other sintered W–Cu composites with the same Cu content. Under a reciprocating sliding load, the reactive Al prevents excessive oxidation. The excellent synergy of the hardness and toughness of the friction-induced surface endows the HN composite with high abrasion resistance. This study provides a new strategy to modulate the structure and energy state of interfaces in metallic composites containing immiscible components in order to achieve high mechanical performance.

Keywords： Immiscible-component composite     Phase separation     Nanostructure     Mechanical properties     Interface modulation    

HTML PDF Collect

Spatial impacts of climate factors on regional agricultural and forestry biomass resources in north-eastern province of China

Wenyan Wang, Wei Ouyang, Fanghua Hao, Yun Luan, Bo Hu

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0864-8

Abstract: Dynamic analysis of biomass combined NPP modeling has been adopted. Temperature trends to warming and precipitation has periodic fluctuation. Regional distribution of agricultural and forestry biomass is mutual and divergent. Precipitation is significantly positive correlated with agricultural biomass. Temperature is negative on forestry biomass in Lesser Khingan & northern Changbai. Precipitation plays positive effect on biomass in southwestern Changbai Mountain. The dynamics of agricultural and forestry biomass are highly sensitive to climate change, particularly in high latitude regions. Heilongjiang Province was selected as research area in North-east China. We explored the trend of regional climate warming and distribution feature of biomass resources, and then analyzed on the spatial relationship between climate factors and biomass resources. Net primary productivity (NPP) is one of the key indicators of vegetation productivity, and was simulated as base data to calculate the distribution of agricultural and forestry biomass. The results show that temperatures rose by up to 0.37°C/10a from 1961 to 2013. Spatially, the variation of agricultural biomass per unit area changed from -1.93 to 5.85 t·km ·a during 2000–2013. More than 85% of farmland areas showed a positive relationship between agricultural biomass and precipitation. The results suggest that precipitation exerts an overwhelming climate influence on agricultural biomass. The mean density of forestry biomass varied from 10 to 30 t·km . Temperature had a significant negative effect on forestry biomass in Lesser Khingan and northern Changbai Mountain, because increased temperature leads to decreased Rubisco activity and increased respiration in these areas. Precipitation had a significant positive relationship with forestry biomass in south-western Changbai Mountain, because this area had a warmer climate and stress from insufficient precipitation may induce xylem cavitation. Understanding the effects of climate factors on regional biomass resources is of great significance in improving environmental management and promoting sustainable development of further biomass resource use.

Keywords： Biomass resources     Net primary productivity (NPP)     Climate change     Heilongjiang Province     China     Climate     Energy systems/technology     Other sustainability (specify)     Statistical methods     GIS     Model flow     CFD    

HTML PDF Collect

Multiple Pollutants from Crop and Livestock Production in the Yangtze River: Status and Challenges

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023511

Abstract:

● Cash crops and livestock production in Yangtze River Basin has

Keywords： Development     crop production     livestock production     multi-pollutant models     multiple pollutants     Yangtze River    

HTML PDF Collect

Integrated river basin management in rapidly urbanizing areas: a case of Shenzhen, China

Lei LIU, Xiaoming MA

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 243-254 doi: 10.1007/s11783-010-0276-0

Abstract: This paper analyzes effective methods to integrated river basin management (IRBM) using Longgang RiverCurrently, every water quality indicator of the Longgang River basin was unable to meet the requiredThe framework and institutional suggestions could inform similar processes in other representative river

Keywords： integrated river basin management (IRBM) model     Longgang River basin     Shenzhen     decentralization     stakeholder    

HTML PDF Collect

Problems of Syrdarya river basin management

Serdar EYEBERENOV, Baijing CAO, Fengting LI

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 221-225 doi: 10.1007/s11783-009-0015-6

Abstract: Countries sharing benefits from the river have to be responsible for costs of operation and maintenance

Keywords： Central Asia     energy     agriculture     water     Syrdarya basin    

HTML PDF Collect

Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 255-265 doi: 10.1007/s11783-010-0279-x

Abstract: In the study, a typical peri-urban river, Nansha River, was selected as a case study to discuss the schemeof peri-urban river rehabilitation.Located in the north part of the Beijing central region, the Nansha River watershed has been designatedHowever, the Nansha River is currently seriously contaminated by urban and rural pollutants from bothAccording to the characteristics of the typical peri-urban river, three different PS and NPS control

Keywords： peri-urban river     coupled hydrodynamic-water quality modeling     scenario analysis     river rehabilitation    

HTML PDF Collect

standard of the basin pollution control project based on evolutionary game theory and by taking Xiangjiang River

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: By using data on the water quality of Xiangjiang River Basin, this paper calculates the rewards and penalties

Keywords： evolutionary game     ecological compensation standard     Xiangjiang River Basin    

HTML PDF Collect

A holistic approach for evaluating ecological water allocation in the Yellow River Basin of China

YANG Zhifeng, CUI Baoshan, CHEN He

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 99-106 doi: 10.1007/s11783-007-0019-z

Abstract: The holistic approach in a basin scale was then used in the Yellow River Basin and it suggested thatThe ecological water requirements of inside river systems and outside river systems were respectively
HTML PDF Collect

Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0943-5

Abstract: The water quality in a typical urban river segment originated with reclaimed water in Beijing was monitoredfor two years to investigate the evolution of water quality along the river, and statistical analysiswas applied to determine factors influencing water quality of such river recharged by reclaimed waterHowever, turbidity and algal contents fluctuated temporally in the direction of river flow.with reclaimed water and one originated with natural water, the Shannon–Wiener index in the objective river

Keywords： Reclaimed water     Urban river     Turbidity     Algae     Flow rate    

HTML PDF Collect

Title Author Date Type Operation

Analysis and assessment of heavy metal contamination in surface water and sediments: a case study from LuanRiver, Northern China

Zhaoming WANG,Ranhao SUN,Haiping ZHANG,Liding CHEN

Journal Article

Structural design and construction of catway for the Fourth Nanjing Yangtze River Bridge

Luan Changhua, Shen Bin

Journal Article

Speciation evolutions of target metals (Cd, Pb) influenced by chlorine and sulfur during sewage sludge incineration

Jingde LUAN,Rundong LI,Zhihui ZHANG,Yanlong LI,Yun ZHAO

Journal Article

Flexible liquid metal coil prepared for electromagnetic energy harvesting and wireless charging

Shen GUO, Peng WANG, Jichuan ZHANG, Wenpeng LUAN, Zishuo XIA, Lingxiao CAO, Zhizhu HE

Journal Article

Computation model for corrosion resistance of nanocrystalline zircaloy-4

ZHANG Xiyan, ZHU Yutao, LIU Qing, LUAN Baifeng, HUANG Guangjie, LI Cong, ZHANG Xiyan, SHI Minghua, LIU

Journal Article

Multi-scale evaluation of river health in Liao River Basin, China

Fei XU, Yanwei ZHAO, Zhifeng YANG, Yuan ZHANG

Journal Article

Performance of a Hierarchically Nanostructured W–Cu Composite Produced via Mediating Phase Separation

Chao Hou, Hao Lu, Zhi Zhao, Xintao Huang, Tielong Han, Junhua Luan, Zengbao Jiao, Xiaoyan Song, Zuoren

Journal Article

Spatial impacts of climate factors on regional agricultural and forestry biomass resources in north-eastern province of China

Wenyan Wang, Wei Ouyang, Fanghua Hao, Yun Luan, Bo Hu

Journal Article

Multiple Pollutants from Crop and Livestock Production in the Yangtze River: Status and Challenges

Journal Article

Integrated river basin management in rapidly urbanizing areas: a case of Shenzhen, China

Lei LIU, Xiaoming MA

Journal Article

Problems of Syrdarya river basin management

Serdar EYEBERENOV, Baijing CAO, Fengting LI

Journal Article

Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

Journal Article

standard of the basin pollution control project based on evolutionary game theory and by taking Xiangjiang River

Dongbin HU, Huiwu LIU, Xiaohong CHEN, Yang CHEN

Journal Article

A holistic approach for evaluating ecological water allocation in the Yellow River Basin of China

YANG Zhifeng, CUI Baoshan, CHEN He

Journal Article

Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Journal Article