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Based on the AVL fire software, this article conduct three-dimensional analog computation on combustion process of LPG engine which converted by single cylinder gasoline engine. According to the reckoning calculations, it analyzed homogeneous mixture lean burn conditions, the generation process of emissions and affecting factors of LPG engine. The analysis of analog computation results provided reference...
In this paper, we studied the influence of different concentrations of chlorothalonil which was commonly used in North China, on the activities of soil invertase, catalase and urease. The results showed that the influence trend of chlorothalonil at different doses on soil enzyme activity was almost the same. For soil catalase, it showed significant activation. For soil urease, it showed stimulation...
Under the background of mass media and digital technique, pneumatic skin design of long-span buildings has three levels of structural and unstructural representation. They are marcoscopic (reappearance of major structure), middle (arrangement of pneumatic cushions) and microscopic (expression of membrane material). Moreover, when architectures express their meanings, six methods, which represent different...
The paper studies change of enzyme activity with increasing cropping years in greenhouse soil. We furthermore took mancozeb, which was a fungicide commonly used in greenhouse soil in North China, as an example to study the change difference of greenhouse soil enzyme activity with different cropping years after addition of external agricultural chemical material. We found that with increasing cropping...
In this paper, we studied the effects of three fungicides (ehlorothalonil, mancozed and propamocarb hydrochloride), which were commonly used in north of China, on the activity of greenhouse soil enzyme. It was shown that ehlorothalonil, mancozed and propamocarb hydrochloride had insignificant effects on sucrase and urease activities at concentration of 10 mg·kg-1 and 50 mg·kg-1, while they had significant...
This paper based on the control system with integral element, establishes the fuzzy control system and designs the fuzzy controller. Though reasonable design the parameters in the fuzzy controller, studies on the control performance for the control system. After changing the shape of the membership function, the quantization factor, the control rules and the number of fuzzy linguistic variable, will...
This paper defines the concept of E-interview, analyze the advantage of E-interview and elaborate the reason of the application scope of the E-interview in the current personnel selection. This paper not only points out the important position and the applicable scope of the E-interview in the current personnel select, but also does the basic estimate to the application foreground of the E-interview...
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