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Soil samples (0-10cm soil layer) were collected from Xuanwei and Fuyuan, which were known as high lung cancer incidence area in Yunnan province, China.The aim of the study was to investigate the trace metal pollution situation of the local village. Total 24 samples of surface soil were analyzed for 32 trace metals. The samples were digested with HNO3 and HF and H2O2 using microwave. The concentrations...
The concentrations of 15 blood plasma trace elements such as copper, zinc, selenium and so on in 95 women patients with lung cancer and 93 controls were determined by microwave-ICP-MS, where lung cancer mortality was among China's highest and especially in females. T test, non-condition multivariable logistic regression analysis and multiple correlation analysis were used to analyze the data. The...
Well-log data and the associated extracted attributes have allowed better description of reservoir heterogeneities and more realistic assessment of oil and gas in place. However, the establishment of a complicated nonlinear relationship between logging attributes and reservoir properties has been a major challenge for working geoscientists. Although back propagation neural network is widely and successfully...
High error rate is critical to the wireless video transmission. Our paper tackles the problem of robust video streaming over error-prone channels. Basing on an autoresilient multiple-description coding method and a multi-path transmission strategy, further study is done on the computational complexity of rate-distortion optimization for video coding and transmission. A unitary-optimized operation...
Slant Correction plays an important role in the pretreatment during the recognition of vehicle license plate (VLP). To reduce and avoid the interference from the dirt, noise and frame of the VLP, as well as simplify the computation load, a method of slant correction of VLP integrates PCA (Principal Component Analysis) based on color-pair feature and radon transformation is presented in this paper...
Slant Correction plays an important role in vehicle license plate automatic recognition system. In order to reduce or avoid adverse effects caused by noise disturbance and fragmentary frame of vehicle license plate, as well as speed up the computation, an approach based on feature point and principal component analysis (PCA) is presented. Feature points are considered as the edge of characters on...
Combining gray correlative analysis with Fisher's guiding principle and using 2-ary correlative grade to work out gray judgment function by Fisher's guiding principle, the author sets up gray judgment method for oil-layer. It is successful to analyze the data of surveying well in Qiaokou region, Huazhong plain oil field by this method. In this application, grey Fisher method is superior to both of...
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