Journal of Hunan University of Science & Technology 

About: Journal of Hunan University of Science & Technology is an academic journal. The journal publishes majorly in the area(s): Coal mining & Coal. Over the lifetime, 286 publications have been published receiving 491 citations.

Revision of taxonomic system of the genus Hepialus (Lepidoptera,Hepialidae) currently adopted in China

Abstract: There are different characteristics for genus identification found in the genitalia morphology of the genus Hepialus insects reported in China,and most species of Hepialus described by Chinese scientists were transferred to Thitarodes by foreign scholars.The taxonomy of the genus Hepialus currently adopted in China was revised and newly divided into four genera,Parahepialus gen.nov.,Ahamus gen.nov.,Hepialus and Thitarodes Viette,1968 on the basis of the particular structure of the valve on male genitalia.62 species belonging to the original Hepialus described in China were rearranged into the four genus,1 species of Parahepialus,1 species of Hepialus,18 species of Ahamus,40 species of Thitarodes.Its rationality was supported by the systemic phylogenetic tree constructed by the CytB gene of some original Hepialus species collected from GenBank.

Research on sheep disease diagnostic expert system based on subjective Bayes algorithm with self-learning

Abstract: The diagnosis majority of systems which based on the tradition of expert system technology perform reasoning only by historical knowledge,lack of ability to learn,which contributing to lowefficiency of knowledge studying,the low accuracy of conclusion. This study taking example of sheep Disease diagnosis,constructed Bayes reasoning supporting learning by self,designed the architecture of expert system,. Experimental results showed:model of Bayes supporting learning by self reasoning scheme enables to improve the utilization rate of knowledge, successfully improve the accuracy of diagnosis,increase the intelligence of learning ,harvest a good Experimental effect. 1fig.,2tabs.,8refs.

Analysis of a wide range haze pollution in China

Abstract: To analyze causes and characteristics of a wide range haze in January 2013 in China,mass concentrations,size distribution and spatio-temporal variation of atmospheric particles in eight major cities were investigated,as well as correlations were analysed between haze and meteorological factors,principal component and correlation analysis also were investigated that of atmospheric pollution indicators in eight major cities during haze period.Results showed that mass concentrations of fine particles(PM 2.5) exceeded standard by 234% on average,with most serious from 11th to 14th,the mean ratio of PM2.5 / PM10 is 0.72.In addition,meteorological conditions with high humidity,thermal inversion,low pressure and calm wind are in favor of formation of haze.Strong correlations are found between PM2.5 and SO2 as well as NO2,principal component analysis indicated that combined pollution existed in many cities.The haze of wide range in January 2013 in China was caused by vehicle exhaust and coal fume combined pollution which additionally dominated by specifical meteorological conditions.

The effect of particle size on adsorption of methane on coal

Abstract: In order to research the effect of particle size on adsorption properties of coal,coal samples rich in gases are collected and five types of coal specimens are made The grain diameters of these specimens are within the ranges of 015～020 mm,012～015 mm,0109～012 mm,0096～0109 mm,and 0045～0096 mm,respectively Under isothermal conditions,adsorption-of methane-on-coal tests are done for these specimens using the WY-98B adsorption constant determinator,and the law of how coals of different particle sizes adsorb methane was found Based on the Langmuir adsorption theory and the molecular kinetic theory,relationships among coal's adsorption energy,adsorption site,specific surface area,and quantity adsorbed are derived The adsorption law is theoretically verified using these relationships and the theory of molecular structure characteristics The verified adsorption law could be used to study the lawof gas migration and gathering in coal seams,and the mechanism of coal and gas outbursts 3figs,1tab,8refs

Reservoir-forming conditions and exploration potential of shale gas in Lower Cambrian Niutitang Formation,Northwestern Hunan

Abstract: Based on the data of outcrops,organic geochemistry,the reservoir-forming conditions and exploration potential of shale gas in Lower Cambrian Niutitang Formation were investigated in the Northwestern Hunan,South China.The results showed that marine mudstone-shales have good forming conditions of shale gas for the large distribution area and thickness of mudstone-shale,high organic carbon contents,fine kerogen type and high thermal evolution(mature to over mature).The development and distribution of the black mudstone-shale thickness is controlled by sedimentary facies zone,showing a gradually decreasing tendency from the deep-water shelf facies to slope facies.Through analyzing the assemblage of source,reservoir,and capping rocks,Sangzhi-Shimen synclinore has favorable conditions to form shale gas reservoirs,and displayed a good prospect in shale gas exploration.The Guzhang anticlinorium has experienced multiphase tectonic movements,thus the overlying strata were denuded seriously.However,the self-generation,self-storage and adsorption capacity of shale gas made it possible to have good exploration potential as well.