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Radical prostatectomy, radiotherapy and active surveillance are three widely used treatment options for patients with low‐risk prostate cancer, but the relative effects are controversial. We searched PubMed, Embase and Web of Science until June 2020, focusing on the studies comparing the effect of radical prostatectomy, radiotherapy and active surveillance in patients with low‐risk prostate cancer...
Organic-rich Lower Paleozoic Qiongzhusi, Wufneg, and Longmaxi formations in South Sichuan and North Yunnan areas are the main gas prospecting strata in China. XRD analysis is used to determine the mineral composition and brittleness indexes of three shale suites in these areas. These parameters are important for evaluating shale gas resources, analyzing reservoir-forming mechanisms, and planning prospecting...
At present, many large-scale mechanical system has complex structure, which makes the fault of it has characteristics of complexity, ambiguity and uncertainty. Based on the introduction of basic theory of the fuzzy fault tree analysis method and aim at the characteristics of ambiguity and uncertainty of the mechanical failure probability, the paper introduced fuzzy set theory into mechanical fault...
The paper discusses the batch incremental clustering algorithm in the application for Coke Oven Intelligent Control. By analyzing new data by bulk incremental clustering algorithm, the fuzzy control rule base will be updated. And then, the simulating models for gas collector pressure system and its control system is established under the condition of software MATLAB. The simulating result with the...
This paper studies the intranet-based networking and communications systems of the Computer Numerical Control (CNC) machine. By determining the system's overall framework and the main function modules, the program of the communication software and processing management software is accomplished.
The Yb3+ doped laser glass composed of SiO2-Li2O-Na2O-K2O-MgO-Al2O3-Yb2O3 were studied experimentally using the absorption and fluorescence spectrum. And the various spectral parameters of samples were calculated by the reciprocity method, including the absorption cross section, stimulated emission cross-section and fluorescence life time. The result shows that the alkali metal oxides possess different...
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