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Ye C.A.,Leshan Vocational and Technical College | Zhang X.F.,Chengdu Land Reserve Center
Advanced Materials Research | Year: 2014

Polycrystalline silicon-photovoltaic industry belongs to high-and-new technology industry, but it produces massive by-products (silicon tetrachloride and so on), even partial chloro-silicane and hydrogen chloride exude into the exhaust in its production process. As a consequence, it not only increases the exhaust processing cost in the polycrystalline silicon-photovoltaic industry, but also increases pollutant discharge of the enterprise. At present, Chinese polycrystalline silicon-photovoltaic enterprises cannot solve technical difficult problems in large-scale production due to lack of coordination of chemical industry. Moreover, polycrystalline silicon has high request of purity that needs quite advanced technology to achieve. This article introduces influences upon production cost and energy consumption with the use of improved Siemens method, and proposes that polytrophic-photovoltaic industry needs to be systematized, normalized and standardized for its healthy development. © (2014) Trans Tech Publications, Switzerland. Source

Zhao Y.L.,Leshan Vocational and Technical College
Applied Mechanics and Materials | Year: 2013

The Internet of Things is currently the most popular field of communication and information research directions. Their application in the amount of information involved, are extremely large amount of data. How to ensure the transmission efficiency of business information under the premise of improving networking applications data security to protect the user's privacy data will be particularly important. Paper uses a custom data packet encapsulation mechanism, reducing the overhead of data resources; another based on their cross-platform communication features, combined with secure encryption and decryption, signature and authentication algorithm, the establishment of a secure communication system of things model for the differentiation of things communications environment, providing a standard packet structure, namely smart business security IOT application Protocol intelligent Service Security Application Protocol(ISSAP. © (2013) Trans Tech Publications, Switzerland. Source

Wang B.Q.,Leshan Vocational and Technical College | Wang B.L.,Huaneng Rizhao Power Plant
Advanced Materials Research | Year: 2014

The evolutionary structural optimization (ESO) is used to optimize constrained damping layer structure. Considering the vibration and energy dissipation mode of the plate with constrained layer damping treatment, the elements of constrained damping layers and modal loss factor are considered as design variable and objective function, while damping material consumption is considered as a constraint. The sensitivity of modal loss factor to design variable is further derived using modal strain energy analysis method. Numerical example is used to demonstrate the effectiveness of the proposed topology optimization approach. The results show that vibration energy dissipation of the plates can be enhanced by the optimal constrained layer damping layout. © (2014) Trans Tech Publications, Switzerland. Source

Xian Z.,Northwest University, China | Zili R.,Northwest University, China | Zili R.,Leshan Vocational and Technical College
Acta Horticulturae | Year: 2016

In order to find the optimum drip irrigation schedule for watermelon grown in plastic sheds using E601-B type pan evaporation, effects of different water supply conditions (Kcp: 0.5, 1.0, 1.5 Ep) on growth, photosynthesis, fruit yield, and water use efficiency during different growth stages were studied. The relationship between irrigation water amount (Ir), evapotranspiration (ET), and yield was also analysed. Results showed that treatment 5 (T5) performed best. The recommended corresponding irrigation Kcps were 1.00, 1.00, 1.50, and 1.00 for seedling, flowering and fruit bearing, fruit development, and fruit mature stages, respectively. For T5, the ratios of plant evapotranspiration to pan evaporation (ET/Ep) during the four stages were 0.40, 0.76, 1.59 and 0.77, respectively. Both irrigation water amount and ET positively correlated to fruit yield and plant fresh weight (FW). For FW, the correlation coefficients were 0.79, 0.64, 0.80 and 0.50 (P<0.05), respectively. There were no correlations between plant dry weight (DW) and irrigation water amount or evapotranspiration. The data from this study provide reference information for precision management and scientific irrigation on watermelon. Source

Zhao Y.L.,Leshan Vocational and Technical College
Applied Mechanics and Materials | Year: 2014

This paper first discusses the basic principles of binocular stereo vision inspection, followed by discussion of the three-dimensional mathematical model of binocular vision sensor measurements, non-contact measurement accuracy binocular stereo vision again spring geometric parameters were analyzed, and then double-structure stereo vision sensor configurations were analyzed for binocular stereo vision to do a simple discussion of the basis for discussion. © (2014) Trans Tech Publications, Switzerland. Source

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