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Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chinese Journal of Arteriosclerosis is the property of Chinese Journal of Arteriosclerosis Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Research of Soil & Water Conservation is the property of Institute of Soil & Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Mine Automation is the property of Industry & Mine Automation Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science & Technology of Cereals, Oils & Foods is the property of Science & Technology of Cereals, Oils & Foods Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Zhejiang Electric Power is the property of Zhejiang Electric Power Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Frontiers of Computer Science & Technology is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

摘 要:【目的】研究腮腺血流变化与唾液分泌的关系。【方法】应用彩色多普勒超声观测53 名健康成人酸刺激前后腮 腺小动脉血流变化, 同时测定唾液流率的变化。【结果】彩色多普勒超声能清楚显示腮腺血流变化, 酸刺激前后血流各项指标 和唾液流率均有显著性差别(P

Bryophytes are important indicators of environmental pollution. At present, bryophytes are mainly used to monitor atmospheric pollution in China. In fact, bryophytes have been widely applied to monitor water quality abroad. In the present paper, we firstly analyzed the literature of applying bryophytes to monitor water environmental quality abroad, then summarized relevant contents of bryomonitoring, which included the types of water pollutants monitored by bryophytes, the species of bryophytes used for bryomonitoring, the influences of the survival status of bryophytes on monitoring effect, the environmental factors affecting the enrichment of heavy metal elements in water by bryophytes, the active and passive methods of applying bryophytes to monitor water pollutions, and the sample preparation, as well as some European cases of bryomonitoring for water environmental quality. Finally we also proposed some suggestions about bryomonitoring researches and application in the future. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Frontiers of Computer Science & Technology is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

There are a lot of coal resource in southwest China, where rocky desertification is very serious in Karst mountainous areas, especially in coal mining areas, which further promotes the process of rocky desertification. In order to coordinate the contradiction between coal mining and ecological environment protection in southwest China, the geological model of water preserved mining in Karst mountainous area of southwest China was studied. Taking Liupanshui coal field, especially Miluo Coal Mine of Fa’er Mining Area, as an example, the characteristics of "coal" and "water" in the southwest Karst mountain areas had been studied based on the analysis of the ecological, coal mining, tectonic geology and hydrological conditions in the study area using geological survey, mining exposure, mine hydrological observation, and groundwater borehole microscopic high-speed video obser-vation methods. The process of rocky desertification driven by coal mining in Karst mountain areas had explained. Then, the statistical analysis, three axis unloading experiment and water-electric similar simulation had been used to study the development height of the water conducting fissure zone in southwest China, the change of the rock mass in the whole subsidence zone and the response law of the ecological water level under the lateral seepage of the coal mining. The result shows that the coal mining in southwest Karst area leads to the decline of diving position, which promotes soil and water loss, and drives the progress of rocky desertification in Karst mountainous area in southwest China. This is the key problem of water preserved mining in this area. In the study area, the thickness of coal mining in the study area is small at 1～3 m, and the thickness of overlying bedrock is large at 800～1 000 m. The development of water conducting fissure zone is limited, and the performance of the aquifers is fine. The vertical seepage flow is weak, but the coal aquifers and the eco-phreatic exist lateral seepage, and the relationship of "coal" and "water" is the lateral seepage type. Under the typical mining geological conditions in the study area, a lateral coal pillar with a width of 80 m can be achieved, and the advance grouting can reduce the retention of water retaining pillars. This study can provide a basis for mining planning in Karst mountainous areas of southwest China. [ABSTRACT FROM AUTHOR]

In terms of the fact that the traditional mining method causes the high drivage rate and low resource recovery rate, a new mining technology, mining without coal pillars and gateroad excavation, was put forward based on the idea of roof cutting and automatically formed roadway. The concrete mining method of working face and the principle of roadway formation were explicated by comparing with traditional coal mining technology. Through the analysis of the movement characteristics of roof rock, a mechanical model of surrounding rock structure was established, and the formula for calculating the resistance of roof support is derived. Supporting technology matching with the new mining technology was studied on the basis of the characteristics of surrounding rock movement. Besides, the zoning supporting concept was proposed and applied in the field, which means that different support measures should be taken in different areas. Field test results show that the new mining technology has achieved the goal of mining without coal pillars and gateroad excavation in advance. [ABSTRACT FROM AUTHOR]

In order to solve the surrounding rock control problems of gob-side entry retaining in deep backfill mining, taking the No. 1126 haulage roadway in Xingdong coal mine as an example, the Strain Softening model was adopted to simulate the deviatoric stress and plastic zone evolution laws of the surrounding rock at the gob-side entry retaining during the whole process of advancing with the working face. The results show that ① the more obvious influence zone of the advanced mining about is 32 m on the roof, but about 16 m on floor and two ribs. The more obvious influence range of the lag mining about is 32 m on the roof, but about 24 m on floor. ② The monitoring sections are monitored from the beginning to the end of working face mining during the whole process of advancing with the working face. It is concluded that the evolutional sequence of deviatoric stress distribution form is thin elliptical shape, approximate circle shape, small semicircle arch, large semicircle arch, and fantail arch. The peak value zone of deviatoric stress is transferred from the roof-to-floor to the corner of roof and floor in solid coal side and the solid coal side. Meanwhile, the order of plastic zone evolution state of the surrounding rock of the gob-side entry retaining as follow: Approximate elliptical shape, approximate circle shape, hemisphere shape, the plastic zone of the surrounding rock is asymmetric distribution. ③ Based on the asymmetric distribution characteristics of deviatoric stress and plastic zone in gob-side entry retaining with deep backfilling mining, the asymmetric control technology of surrounding rock in areas was proposed and applied in the field test. The surrounding rock deformation of gob-side entry was effectively controlled. [ABSTRACT FROM AUTHOR]

Based on the low temperature Nitrogen adsorption experiments of transitional facies of Longtan Formation shale in the northwest Guizhou, the pore fractal dimension was studied by using the FHH model, and the fractal dimension of D1 and D2 were obtained. The average values were 2.718 6 and 2.782 4, reflecting the complexity of Longtan Formation shale pore. The correlation analysis of fractal dimension and other geological parameters showed that the fractal dimension with shale surface area, tOC are positively correlated, with the average pore size, the content of quartz, quartz/clay are negatively correlated, with Ro and the content of clay minerals are related positively first and negatively later at the inflection point of Ro=2.5% and the content of clay minerals of 50%. The study results show that D1 can be more comprehensive response to the shale pore size, volume, and surface characteristics.Also, the structural features can be integrated to characterize shale pore. The numerical value is more conducive to the accumulation of shale gas. D2 is more obvious for complex pore structure characterization, and can be used in the research of shale pore structure. The value should be in a certain range, should not be too large. In the northwest of Guizhou Longtan Formation, the transitional facies shale pore fractal dimension of D1 is greater than 2.60, and the distribution of the favorable range of D2 is 2.50-2.80, when D2 is higher than 2.80, then the recoverability evaluation and the fracturing design are necessary. The significance of this research is to provide new ideas and means for the exploration and development of shale gas in Guizhou area. [ABSTRACT FROM AUTHOR]