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In order to study the cutting energy consumption characteristics of coal miner under complicated conditions, the MG500/1180-WD shearer was cut out under different working conditions by collecting the cutting energy consumption model of coal mining machine. Pin and idler axle load data, and finally through the different conditions of coal miners cutting energy consumption calculation, the following conclusions: to keep the other conditions remain unchanged, the linear cutting energy consumption with With the increase of the traction speed increase; the oblique cut cutting energy consumption value is far more than the straight cutting energy consumption value; shearer cutting energy consumption in addition to the speed of traction, cutting mode, but also by the impact of coal hardness, With the increase in the hardness of coal and cutting cutting energy consumption also increased. The results of this study provide the theoretical basis for the development and use of shearer, and provide the theoretical basis for the scientific and efficient production of coal mining industry.

With large-scale application of horizontal wells, the stimulation and reform of horizontal wells has been playing a more and more important role in increasing oil/gas production. In order to ensure fully fracturing of multi-stage reservoir in well, make play the capacity of each stage in horizontal section and make the reconstruction more pertinent and more selective, the development of selective acidizing technology for horizontal wells is particularly important. This paper presents a selective acidizing process by dragging coiled tubing in horizontal wells, which conducted experimental analysis and theory study for key operation parameters, and established technical parameters and successfully implemented on DH20-4H Well. [ABSTRACT FROM AUTHOR]

Combination slug deep profile control injection system, slug optimization design and ground injection technique study were conducted aiming at severe heterogeneity of reservoir and quickly rising of comprehensive water cut in Liuzan oilfield. The injection profile control system is determined to be gel microspheres injection in alternating with high temperature phenolic resin cross-linked polymer system, and ground injection allocation process was adopted to make the layered rotation injection and parameter adjustment control easier. By the end of May, 2013, the cumulative incremental oil of test area is 9800t without taking the decrease into account while calculating decrease the value is 16 960 t. [ABSTRACT FROM AUTHOR]

Objective: The purpose of this study was to analyze the distribution, temporal and spatial clustering characteristics and changes of severe hand, foot, and mouth disease (HFMD) in order to provide evidence-based decision making strategy for control and prevention of severe HFMD cases., Methods: Severe HFMD cares were extracted from the National Diseases Reporting System of Chinese Center for Disease Control and Prevention (CDC) between 2008 and 2013. Definition and clinical diagnostic criteria of severe HFMD cases were set up by China CDC in the Hand, Foot, and Mouth Disease Control and Prevention Guideline, version 2010. Spatial scan unit was under the district/county of 2 900 in mainland China with temporal scan unit as month and time span as from May 2008 to August 2013. Kulldorff scan statistics was applied and analyses were conducted by SaTScan(TM) 9.1. Mapping and visualizing the results were carried out with ArcGIS 10.0., Results: Data related to the monitoring program on severe HFMD from 2008 to 2013 demonstrated that above 96% of the severe HFMD cases occurred under 5 years old, mostly males, with the ratio of males to females as 1.73-1.80 and over 84% of the children were 'scattered'. Results from SaTScan illustrated that the temporal and spatial clustering existed among severe HFMD cases. The temporal dimension of severe HFMD was from May to July each year. Spatial dimension was located in south-east coastal area and middle-east area. With respect to the changes of temporal and spatial clustering phenomena, Class 1 clustering area was located in south-east coastal region in 2008 and in middle-east region in 2009 and was shifting to the west from middle-east region in 2010. It moved to the north-east from middle-east region in 2011 and to the north-west and south-west from middle-east region in 2012. Class 1 clustering area covered districts/countries from 18 provinces in 2012. The same pattern of Class 1 clustering area was observed as in the previous year-2013, but with less districts/countries from the 13 provinces., Conclusion: Temporal and spatial clustering areas of severe HFMD were presented in this report, and the yearly changing pattern of the clustering areas was noted. Findings from this study provided evidence-based data to the decision-making authorities so as to prevent deaths from severe HFMD cases under reasonable prevention and control strategies.