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Fly ash is waste which severely affected the healthy of people. To utilize it, the mineralogy properties must be studied. By using multielement chemical analysis, the principle chemical composition was analyzed. By using X-ray, electron probe, spectrum analysis testing methods, the cenospheres which are the main component of fly ash surface morphology and the differences of the components were mainly...
The purpose of this study is to reveal the concentration variations of TVOC and formaldehyde with different types of building and furniture materials under different indoor environment conditions, and consequently provide basic guideline for the selection of indoor materials and the control of main indoor contaminants. A model test room with the size of L × W × H=3.4 × 2.9 × 2.95 m3 was built, and...
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...
Particulate matter emissions of filterable particulate matter (FPM), condensible PM (CPM), PM10, and PM2.5 at FGD inlet and stack in a coal-fired power plant were measured by EPA method 201A and method 202. The results indicated that emissions of total particulate matter (TPM) are 40.99mg/m3 and 120.58mg/m3, and the filterable PMs are the highest emissions at both sampling locations which accounted...
The corn embryo was taken as raw material to extract glutathione, and the antioxidant activity of reduced glutathione was studied. The result indicated that the glutathione had strong elimination ability to free radicals. Total antioxidant ability was 12.95U/mL, the maximum inhibition rate to hydroxyl free radical was 80.19%, the maximum ability to anti-superoxide anion was 135.2U/L, the maximum inhibition...
In order to solve the hypoxia problem in Qinghai-Tibet railway tunnel construction, on the Qinghai-Tibet Pleatu, a pressure swing adsorption (PSA) cycle to concentrate oxygen from the low pressure atmosphere at high altitude had been developed. Two PSA oxygen generation stations were constructed which located in Fenghuoshan about 5000m high above sea level. Furthermore, a system of disperse oxygen...
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...
The plots of thinning intensity with five different treatments of C(control), L(35.48%), M(43.15%) , H(57.66%) and G(81.85%) on the undergrowth, carried out in the Larix principis-rupprechtii plantations of Saihanba forestry centre, Hebei province of China, were repeated four times respectively in order to find out the effects of thinning on community characteristics of Larix principis-rupprechtii...
The water system of Fen River in Shanxi province has upstream, midstream and downstream three sections, which are separately located in Jingyou, Jiexiu, Xiaodian, Hongtong, Linfen and Hejin, six sampling points are disposed there for the sake of collecting the samples of the filtered water and suspended matter, and measuring heavy metal contents. The measurement results show that heavy metal exist...
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...
Thermogravimetric analysis was used to study combustion characteristics of the solid of wastewater and solid waste residue of turmeric industry. There were both two distinct phases in the combustion processes of them. The ignition temperature of solid of wastewater was 364°C and the solid waste residue was 311°C, while the ignition characteristics index FZ of them were 13.092 and 10.941 respectively...
The biological purification device that combined the aeration-ship technology and biological contact oxidation was applied to the eutrophic river water treatment of Dongfeng channel in Zhengzhou. The removal efficiency of combined packing and elastic packing to chemical oxygen demand, NH3-N, TP in different dissolved oxygen (DO) and hydraulic loading showed that combined packing performance was better...
This study is supported by the agriculture geochemical survey project in Dakang town, Jiangyou city. By analyzing the heavy metals and organic pollutants contained in the surface soil, a assessment of soil quality is made in the study area by introducing single-index and comprehensive-index evaluation analysis, as well as by using GIS .The evaluation shows that nearly 1/3 areas of the land in the...
Effects of NaCl stress on seed germination and seedling growth in wheat were studied in this paper. The results showed that the germination rate of the seeds treated with NaCl concentration at <;100 mM, germination rate of the seeds was not significantly comparing with control, however the germination of those seeds treated with NaCl at higher concentration (≥200 mM) was inhibited and at 400 mM...
Soluble catechol-O-methyltransferase (S-COMT) is an important target protein due to its involvement in some human disorders. The main scope of the work was to develop an approach to purify and identify S-COMT. Its isoelectric point was 5.0 determined with Offgel. A simplified process including extraction, selective precipitation, ammonium sulfate precipitation, gel filtration chromatography and anion...
In this study, we have investigated the effect of pollutants removal of a vertical multilevel soil infiltration (VMSI) system on municipal wastewater treatment. The VMSI was of 30cm*20cm*50cm column, in which combined stuffing consisted of soil, quartz sand, active carbon and scrap irons were packed. As a result, VMSI system exhibited excellent removal efficiency with 91.7% of COD, 98.4% of NH4+--N,...
Removal rates of phosphorus from phosphorus-containing industrial wastewater were studied when wastewater were treated by modified marble powder as chemical precipitant, the single-factor and orthogonal experiments were performed, and the removals under different treatment conditions (different dosages, temperatures and oscillation rates as well as reaction times) were investigated. The results showed...
The activities in low temperatures of a mesophilic alkaline protease TC4 was improved by directed evolution. The process involved random mutagenesis by error-prone PCR and DNA shuffling followed by first screening on skim-milk plate and second screening by 96-well plate with AAPF as the substrate. It yielded a mutant T31, with a kcat 5 times and a catalytic efficiency kcat/Km 6.33 times greater than...
For molecular biological detection of Mycobacterium tuberculosis, PCR methods with primers targeting different regions specific for mycobacterium tuberculosis complex are used worldwide. However, some uncertainties exist concerning the specificity of certain target regions and the sensitivity. To identify the methods which are best suited for diagnostics, 9 single-round and 2 multiple PCR systems...
To extract venous information from noise-added images acquired by infrared sensor, in this paper, we presents a compressive sensing (CS) based application - gradient projection for sparse reconstruction (GPSR) - to reduce noise in synthetic vein images and real finger vein images respectively. Then compares the result with the reconstruction by wavelet threshold denoising algorithm. The results show...
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