The local maximum exhibited in phase diagram at χv 2 o 5 = 0.25 and t = 338°C probably corresponds to the formation of the mixed cation compound M 3 VO 2 SO 4 S 2 O 7 ( M = 80% K + 20% Na). The data indicate that the lowest temperature of operation for a widely used ...
ab. The development and distribution features of the structure, coal seam occurrence condition and hydrogeological condition are the main control factors on the current CBM reservoir formation. Under the impact of the regional structural movement, in one basin or coal field, the development and distri...
The local maximum exhibited in phase diagram at χv 2 o 5 = 0.25 and t = 338°C probably corresponds to the formation of the mixed cation compound M 3 VO 2 SO 4 S 2 O 7 ( M = 80% K + 20% Na). The data indicate that the lowest temperature of operation for a widely used ...
The paper deals with the picks-lacing, bases on analyzing the helical drum with 3 head vanes of a certain shearer, thinks that lump coal rate relates with the shape of cutting diagram closely. 本文通过对截齿排列的研究,在分析某型号采煤机三头螺旋叶片滚筒的基础上,认为滚筒截割的块煤率,与切削...
The process of the formation of a path for each ant is defined as ant colony moving. Each path corresponds to a reliability allocated result, and the reliability allocated result is determined by the pheromone path diagram and the cost of each node. To establish the node probability diagram in...
Shennongjia is one of the most important ecological function areas and ecologically vulnerable zones in the world. With the rapid development of social economies, especially tourism, the ecological environment of Shennongjia has experienced profound chan
As an evaluation index of the water richness of the aquifer in the Luohe Formation, By using the method of GI method and independent weight method subjective and objective weights influencing aquifer water rich control factors are determined and then weights are coupled by differential maximization ...
molecule, in addition to the electron transport chain reaction, molecular oxygen is also required for the opening of the aromatic ring. A variety of microorganisms have been found to metabolize cyanide and phenolic compounds. Most of them have metabolic pathways leading to the formation of amino-...
The decomposition of NGH can happen when the nature of the formation or vibration changed. Then, the natural gas can volatilize from the stratum [7,8,9]. The properties of the drilling fluid will change and cause irregular vibration of the drill string, which may eventually lead to unwanted...
In the process of drilling a well or once a well is drilled, a well-log analyst takes measurements to evaluate the wells potential to produce. Sometimes it is possible to cut core samples from the formation. If this is done, the core sample is tested in a lab to determine its lithology...