The recognition of splicing sites is a very important step in the eukaryotic DNA se-quence analysis. Many scholars are working hard to improve the accuracy of identifi-cation. Our team carried out research on this iss...The recognition of splicing sites is a very important step in the eukaryotic DNA se-quence analysis. Many scholars are working hard to improve the accuracy of identifi-cation. Our team carried out research on this issue based on support vector machine, which is one famous algorithm in data mining. The training and testing data is from the HS3D dataset, and excellent accuracy rate is achieved by nucleic acid sequence orthogonal coding and RBF core function, and the cross validation experiment hints that base pattern information is mainly located within 20 nucleotides upstream and downstream splice sites.展开更多
The metal active gas （MAG） multilayer weld metal consists of the columnar grain zone （CGZ） and the fine grain zone （FGZ）. Mechanical properties and microstructure of the CGZ and FGZ have been analyzed and evalua...The metal active gas （MAG） multilayer weld metal consists of the columnar grain zone （CGZ） and the fine grain zone （FGZ）. Mechanical properties and microstructure of the CGZ and FGZ have been analyzed and evaluated. The inclusion with a size of 0.2-1.0 μm is typical log-normal distribution. The morphology of inclusions has been analyzed using transmission electron microscope （TEM）. With the microalloying element Ti addition, much MnTiO3 phase precipitates on the Mn-silicates matrix, which is beneficial for the nucleation of acicular ferrite （AF）. The probable mechanism for the nucleation of AF has been discussed.展开更多
文摘The recognition of splicing sites is a very important step in the eukaryotic DNA se-quence analysis. Many scholars are working hard to improve the accuracy of identifi-cation. Our team carried out research on this issue based on support vector machine, which is one famous algorithm in data mining. The training and testing data is from the HS3D dataset, and excellent accuracy rate is achieved by nucleic acid sequence orthogonal coding and RBF core function, and the cross validation experiment hints that base pattern information is mainly located within 20 nucleotides upstream and downstream splice sites.
基金supported by the project of the 11th Five-year National Science and Technology supporting plan for Chinese High Speed Railway Key Technology Research and Equipment Development (Grant No. 2009BAG12A07-D06)
文摘The metal active gas （MAG） multilayer weld metal consists of the columnar grain zone （CGZ） and the fine grain zone （FGZ）. Mechanical properties and microstructure of the CGZ and FGZ have been analyzed and evaluated. The inclusion with a size of 0.2-1.0 μm is typical log-normal distribution. The morphology of inclusions has been analyzed using transmission electron microscope （TEM）. With the microalloying element Ti addition, much MnTiO3 phase precipitates on the Mn-silicates matrix, which is beneficial for the nucleation of acicular ferrite （AF）. The probable mechanism for the nucleation of AF has been discussed.
