567 Result(s)

Chapter

Risk of Extreme Flood Losses under Uncertain Physical Conditions

Risk-based design for mitigating flood losses using extreme value theory can account for a varying or uncertain physical condition, such as the impact of a potential climate change on the return period of cata...

James H. Lambert, Duan Li, Yacov Y. Haimes in Engineering Risk in Natural Resources Mana… (1994)

Chapter and Conference Paper

Study on Breakwater Stability under Waves Induced Seepage Flow

Based on the damage effect of waves induced seepage flow, the stability of protective blocks on slo** breakwater is investigated through calculation and analysis by finite element method (FEM). Combining typ...

Mao Chang-**, Duan **angbao, Mao Peiyu in Groundwater Updates (2000)

Article

Critical Loads of Acid Deposition on Soil in China

Critical loads of acid deposition havebeen mapped for Chinese soils using a modifiedsemi-quantitative method, which is based on theminerals controlling weathering and soil development,and corrected by introduc...

Lei Duan, Shaodong **e, Zhong** Zhou, Jiming Hao in Water, Air, and Soil Pollution (2000)

Chapter

Calculating Critical Loads of Sulfur Deposition for 100 Surface Waters in China Using the Magic Model

Although decades of acid deposition have apparently not resulted in surface water acidification in China, some surface waters may have the potential trend of being acidified, especially those in southern China...

Jiming Hao, Xuemei Ye, Lei Duan, Zhong** Zhou in Acid rain 2000 (2001)

Chapter

Calculation and Map** of Critical Loads for S, N and Acidity in China

Critical loads of nutrient and acidifying nitrogen, as well as of sulphur and acidity, were derived for various ecosystems in China using the steady state mass balance (SSMB) equations. The weathering rates of...

Lei Duan, Shaodong **e, Zhong** Zhou, Xuemei Ye, Jiming Hao in Acid rain 2000 (2001)

Article

A Conductive Polypyrrole Based Ammonium Ion Selective Electrode

In view of the development of miniaturized sensor arrays, a solid-contact ammonium ion selective electrode has been investigated. A conductive polypyrrole film was electrochemicallydeposited on a glassy carbon...

Do Phuc Quan, Chu Xuan Quang, Le The Duan… in Environmental Monitoring and Assessment (2001)

Article

Calculation and Map** of Critical Loads for S, N and Acidity in China

Critical loads of nutrient and acidifying nitrogen, as well as of sulphur and acidity, were derived for various ecosystems in China using the steady state mass balance (SSMB) equations. The weathering rates of...

Lei Duan, Shaodong **e, Zhong** Zhou, Xuemei Ye… in Water, Air, and Soil Pollution (2001)

Article

Calculating Critical Loads of Sulfur Deposition for 100 Surface Waters in China Using the Magic Model

Although decades of acid deposition have apparently not resulted in surface water acidification in China, some surface waters may have the potential trend of being acidified, especially those in southern China...

Jiming Hao, Xuemei Ye, Lei Duan, Zhong** Zhou in Water, Air, and Soil Pollution (2001)

Article

Experimental study of indoor and outdoor airborne bacterial concentrations in Tempe, Arizona, USA

Indoor and outdoor airborne bacterialconcentrations were examined in an occupiedoffice building equipped with an airconditioning (HVAC) system, in Tempe, Arizona,USA. A two-stage microbial air sampler wasused ...

Hong Zhu, Patrick E. Phelan, Tianhua Duan, Gregory B. Raupp… in Aerobiologia (2003)

Article

Concentration Level of Fine Airborne Lead in Bei**g, People’s Republic of China

K. B. He, F. K. Duan, Y. L. Ma, F. M. Yang… in Bulletin of Environmental Contamination an… (2004)

Article

Biogeochemical characteristics of the lower Mississippi River, USA, during June 2003

During June 2003, a period of mid level discharge (17,400 m⁻³ s⁻¹), a parcel of water in the lower Mississippi River was sampled every 2 h during its 4-d transit from river km 362 near Baton Rouge to km 0 at Head...

M. J. Dagg, T. S. Bianchi, G. A. Breed, W. -J. Cai, S. Duan, H. Liu… in Estuaries (2005)

Article

Changes of Land Use and of Ecosystem Service Values in Sanjiang Plain, Northeast China

Agricultural activities, especially reclamation, are considered major threats to the wetland ecosystems in Sanjiang Plain, the largest concentrated area of the freshwater wetlands in China. In the past decades...

Zongming Wang, Bai Zhang, Shuqing Zhang… in Environmental Monitoring and Assessment (2006)

Article

Seasonal changes in the abundance and composition of plant pigments in particulate organic carbon in the lower Mississippi and Pearl Rivers

Plant pigments in particulate organic carbon were examined in the lower Mississippi and Pearl Rivers (U.S.), along with physical variables and nutrients to study seasonal changes in the abundance and compositi...

Shuiwang Duan, Thomas S. Bianchi in Estuaries and Coasts (2006)

Article

Characteristics and Source Identification of Particulate Matter in Wintertime in Bei**g

Aerosol samples were collected during the wintertime from Nov. 24, 1998 to Feb. 12, 1999 in Bei**g, China. Chemical composition was determined using several analytical techniques, including inductive coupled ...

F. K. Duan, X. D. Liu, K. B. He, Y. W. Li, S. P. Dong in Water, Air, and Soil Pollution (2007)

Article

Air pollution and its control in China

The rapid growth of China’s economy has led to severe air pollution characterized by acid rain, severe pollution in cities, and regional air pollution. High concentrations are found for various pollutants such...

Jiming Hao, Kebin He, Lei Duan, Junhua Li… in Frontiers of Environmental Science & Engin… (2007)

Article

Assessment of Chlorophyll-a Concentration and Trophic State for Lake Chagan Using Landsat TM and Field Spectral Data

In this study, we present the digital evaluation of Landsat TM data and field spectral measurements for retrieving chlorophyll-a (chl-a) concentration and trophic state index in Lake Chagan of Northeast China. Ch...

Hongtao Duan, Yuanzhi Zhang, Bai Zhang… in Environmental Monitoring and Assessment (2007)

Article

Oasis land-use change and its environmental impact in **ta Oasis, arid northwestern China

Land use change resulted in land degradation is a focus of research on global environmental changes and plays a significant role in the stability and economic development of oases in arid regions of China. **...

Shan-Zhong Qi, **ao-Yu Li, Hui-** Duan in Environmental Monitoring and Assessment (2007)

Article

Effect of streambed substrate on macroinvertebrate biodiversity

Macroinvertebrates are important components of stream ecosystems, and are often used as indicator species for the assessment of river ecology. Numerous studies have shown that substrate is the primary physical...

Xuehua Duan, Zhaoyin Wang, Shimin Tian in Frontiers of Environmental Science & Engin… (2008)

Article

Influence of Common Reed (Phragmites australis) on CH₄ Production and Transport in Wetlands: Results from Single-Plant Laboratory Experiments

Laboratory culture experiments were conducted with common reed (Phragmites australis) to elucidate the role of root exudates on CH₄ production in wetland soils as well as the importance of different plant organs ...

**aonan Duan, **aoke Wang, Zhiyun Ouyang in Water, Air, and Soil Pollution (2009)

Article

Impact of Elevated O₃ on Soil Microbial Community Function Under Wheat Crop

This study was initiated to explore the effects of ozone (O₃) exposure on potted wheat roots and soil microbial community function. Three treatments were performed: (1) Air with daily averaged O₃ concentration of...

Zhan Chen, **aoke Wang, Zhaozhong Feng, Qin **ao… in Water, Air, and Soil Pollution (2009)