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The spatial and temporal distribution of landslide in Zhejiang, Fujian and Guangdong Provence is analyzed based on statistic data of landslide hazards and precipitation, and the relationship between landslide hazards and typhoon rainfall is considered. The spatial distribution of landslide hazards is uneven. Landslide in Guangdong Provence concentrates in the north-west and north of the mountain areas,...
Groundwater was monitored to investigate its hydrochemical variation and possible influencing factors from April, 2007 to May, 2009 at the inlet (D1) and outlet (S2) of Qingmuguan subterranean river in Chongqing, China. The response of the subterranean river discharge to rainfall events was very fast and dramatic, as the water level rising suddenly and dropping sharply with rainfall amount in the...
2 algae - Chaetoceros muelleri (CM) and Scrippsiella trochoidea (ST) were investigated for the influence on the reproduction of Calanus sinicus. HS-SPME/GC-MS was developed for the analysis of aldehydes produced by phytoplankton. The results showed that, compared with ST, CM induced inhibitory effects on female survival, egg production and egg hatching for Calanus sinicus. By the analysis of aldehydes,...
This paper gives an overview of the sensitivity of AERMOD by comparing the simulated concentrations of SO2 under different model options with the corresponding observed concentrations. While the influence of meteorological conditions on the performance of AERMOD is noticeable, the urban/rural dispersion coefficients and the terrain conditions have only a limited influence on the results from AERMOD...
A new analysis method of gold in sulfate leaching solution is introduced in this paper. Hydrochloric acid is added into solution to decompose thiosulfate for quickly and effectively undermining the gold thiosulfate complex. In the medium of aqua fortis, gold is adsorbed and separated by mercapto group resin. After elution, isoamyl alcohol is used as extractant to enrich and separate Au3+ from solution...
With the development of electronics, communications and materials technology, smart clothing or referred to as electronic textiles (E-Textile) are gradually moving from concept to practice. Reliable, safe and non-obtrusive wearable physiological monitoring is an important application field of smart clothing. Electrocardiogram (ECG) is a very important physiological parameters, but conventional ECG...
The remote sensing technology could identify the surface features by getting their reflectance spectral characteristics. Because of the different surface properties, nature and content of suspended solids, the characteristics of water bottom and depth of different water bodies, the reflectance spectral characteristics which were received from the transducer showed differences between each other. The...
Denitrifying phosphorus removal is a kind of new efficient technology, and can alleviate the contradictions of urban sewage with low-carbon sources. This research took wastewater from a sewage treatment plant in Beijing as study object. Results showed that there was obvious phenomenon of denitrifying phosphorus removal and this phenomenon was gradually strengthened in A2/O process.
Four monitoring sections were set up for on-site monitoring at Bailianjing River in the Expo Park during March to October, 2008, monitoring of 5 parameters at 4 different sites. The water quality variations are mainly related to discharge and temperature (natural), organic pollution (point source: domestic wastewater) in Bailianjing River. Water quality comprehensive index, sensory index, sediment...
The experiments of formaldehyde (HCHO) removal from air were performed with photooxidation technology, adsorption technology, and photooxidation-adsorption technology respectively. According to results of experiments, the photooxidation-adsorption technology had the best removal efficiency of HCHO than two others, and the relative air humidity played an important role to these technologies. After...
Temporomandibular disorders (TMD) affect women with a higher frequency than men, which suggests a possible link between its pathogenesis and sex hormone, such as estrogen. Cytoplasmic Ca2+ plays an important role in cell normal function and cytoplasmic Ca2+ accumulation may be a key factor that causes skeletal muscle fatigue and injury. To investigate the effects of estrogen on intracellular Ca2+...
ET-based water resource management mainly includes ET-based water resource management and ET-based monitoring of water resources. ET-based (Evapotranspiration) water resources allocation determines regional consumable water through regional water balance analysis; in the process of regional water resources allocation, water consumption is taken as the main allocation object, and through the strict...
Water quality monitoring is a very important undertaking that would ensure safe and clean water being delivered to the end users. Water quality monitoring is essential in controlling physical, chemical and biological characteristics of water. To ensure a complete and an all inclusive monitoring of the underground water and surface water, data sampling need to be carried out at many different locations...
In the Dabie Mountains of the lower Yangtze basin, China, soil loss reduction has been deemed as important as flood control after the 1998 flood, which caused great damage to the area and its residents. After 2000 year, a project of Reforestation in cultivated land at slope was started. In this study, field observations of water and sediment discharges were carried out on USLE (Universal Soil Loss...
Air pollutants, specifically inhalable particulate matter (IPM) in the atmosphere, has received extensive attention, mainly because of their adverse effect on people's health. The aim of this study was to investigate the spatio-temporal variability of the IPM from 2007 to 2008 and the relationship between air pollution and respiratory symptoms in people living in Beijing western area. Size-segregated...
Snowfall is a general natural phenomenon in winter-spring alternate season in northeast of China. Snow was melt with the increase of temperature, i.e. freezing-thawing alternations affects soil properties. Static chamber technique was used to monitor nitrous oxide (N2O) flux from black soils in a snowfall process. The fertilization treatments are none (CK), 150 kg N ha-1 (N1), 300 kg N ha-1 (N2) and...
A low cost, fast and convenient method based on electronic nose for determination of ammonia nitrogen in wastewater is developed in this study. The pH of the sample is adjusted to higher than 11 by adding saturated sodium hydroxide solution, through which most of the ammonium ions transform into ammonia and volatilize to the gas phase following Henry's law. A sensor array consist of four metal oxide...
In order to study the distribution and the origin of Cr and Ni in the shallow groundwater in Yongqiao area along Kuihe River, we sampled the shallow groundwater from the both sides of the Kuihe Rive in Yongqiao area of Suzhou Anhui province, China. The results showed that a large area of the shallow groundwater was polluted by heavy metals in this region. Along the river direction, Cr concentrations...
The water resources are shortage in North China. Urban stormwater utilization and recharge to the groundwater aquifer has become an important measure of water resources management with urban impervious areas expansion. The quality of rainfall and roof rainwater indirectly affected the urban stormwater recycling. Jinan city is the study domain. The rainfall quality from Jan. to Aug. in 2008 at 3 sites...
The occurrence of vector-borne West Nile virus in North America has prompted the use of chemical larvicides such as methoprene for widespread urban mosquito control. Since 2003, municipalities in southern Ontario have applied methoprene pellets or ingots to storm water catch basins over the summer. Ryerson University studied the fate and transport of methoprene from a storm sewer system to its receiving...
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