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Xu W.,Zhejiang Industry Poly technical College | Baiqing Z.,Huzhou Vocational and Technical College
Applied Mechanics and Materials | Year: 2010

A new radial plunger pump is given here, which is installed with a roller between the plunger and the stator. When in working order, the roller is purely rolling on the inner face of the stator, reducing the friction force and effectively avoiding the combustion of friction pair. The force on the roller and the plunger of the static pressure supporting cylinder pair are studied here and some theoretical evidences are provided for developing new radial-plunger pumps of high speed, high efficiency, and long lifetime. © (2010) Trans Tech Publications, Switzerland.

Zhili X.,Huzhou Vocational and Technical College
Advance Journal of Food Science and Technology | Year: 2015

The study attempts to apply the virtual reality technology in food processing teaching, to analyze the algorithm in food processing, to improve the teaching quality and efficiency in order to save manpower and material resources. The development of virtual reality technology opens a new road to the progress of the food industry continuously, the development of virtual technology provides the technical support for efficient food processing methods, In the food processing teaching process, it can be effective to improve the teaching quality and efficiency combining virtual technology with food processing teaching, using the way of virtual animation and simulation. © Maxwell Scientific Organization, 2015.

Huang F.,Zhejiang University | Wang X.,Environmental Information Center | Lou L.,Source Point | Zhou Z.,Huzhou Vocational and Technical College | Wu J.,Zhejiang University
Water Research | Year: 2010

Understanding the spatial distribution and apportioning the sources of water pollution are important in the study and efficient management of water resources. In this work, we considered data for 13 water quality variables collected during the year 2004 at 46 monitoring sites along the Qiantang River (China). Fuzzy comprehensive analysis categorized the data into three major pollution zones (low, moderate, and high) based on national quality standards for surface waters, China. Most sites classified as "low pollution zones" (LP) occurred in the main river channel, whereas those classified as "moderate and high pollution zones" (MP and HP, respectively) occurred in the tributaries. Factor analysis identified two potential pollution sources that explained 67% of the total variance in LP, two potential pollution sources that explained 73% of the total variance in MP, and three potential pollution sources that explained 80% of the total variance in HP. UNMIX was used to estimate contributions from identified pollution sources to each water quality variable and each monitoring site. Most water quality variables were influenced primarily by pollution due to industrial wastewater, agricultural activities and urban runoff. In LP, non-point source pollution such as agricultural runoff and urban runoff dominated; in MP and HP, mixed source pollution dominated. The pollution in the small tributaries was more serious than that in the main channel. These results provide information for developing better pollution control strategies for the Qiantang River. © 2009 Elsevier Ltd. All rights reserved.

Zhong X.,China Institute of Technology | Zhou B.,Huzhou Vocational and Technical College
International Review on Computers and Software | Year: 2011

An inter-cluster cooperative node selection scheme with low energy-cost is proposed for the energy -constrained wireless sensor networks. Pre-set an energy threshold first and determine a cooperative node set. Then estimate information of channels between inner-cluster cooperative nodes and cluster head nodes with a blind channel estimation algorithm that requires small amount data. The optimum inner-cluster nodes are selected as the cooperative nodes of the cluster head nodes by considering comprehensively channel states and residual energy. The blind channel estimation is then turn into the unconstrained optimization which is then resolved by quadratic programming iterative weighted method. Theoretical analysis, mathematical models, and simulation results show that the new algorithm can obtain channels information by mean of a few data. © 2011 Praise Worthy Prize S.r.l. - All rights reserved.

Long Z.X.,Institute of Urban Construction of Hangzhou Polytechnic | Fan X.,Huzhou Vocational and Technical College
Applied Mechanics and Materials | Year: 2013

In order to analyze reliability for strength of pre-stressed pipe pile welded joints in common construction activities, perform checking calculation to welded joint strength in various construction activities with the weld check formula in consideration of the influence coefficient of the eccentrically loaded end plate, compare with the shear strength of the pipe pile end plate porthole and the tensile strength of the steel bar pier head, and analyze from overall safety of pipe pile application before obtain the conclusion: the strength of the weld joint made according to relative codes is far more than the strength of the weak part of the pipe pile, but some severe weld defects will make weld joint become the first part to be damaged. One recommendation is increase the joint strength between the anchorage hole of the pipe pile end plate and the pre-stressed steel bar pier head; the other is to make the new welding construction specifications for pipe pile joint, improve requirements to joint welding construction, reduce welding duration, reduce working strength and improve welding quality stability. © (2013) Trans Tech Publications, Switzerland.

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