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The article informs about a research paper by Ming Zhao, Zhengdong Huang and Liping Chen of Huazhong University of Science and Technology, at Wuhan, People's Republic of China. The study focuses on a method of pressure calculation for carrying out the multidisciplinary design optimization (MDO) of the tool head system in the heavy-duty CNC machine tool for multi-pocket closed hydrostatic guideways.

The article informs about a study related to the performance analysis of a slanted hydraulic pump of the Taipuhe Pump Station located in Taipuhe valley, Shanghai, China, that has an axial flow. It focuses on analysis of several characteristics of hydraulic pump related to its safe operation, which include impeller elevation, unsteady flow and hydraulic thrust. Further, it mentions that the flow passage was analyzed and the hydraulic thrust was calculated to prevent damage to the bearings.

A mathematical model and numerical method for water flow and solute transport in a tidal river network is presented. The tidal river network is defined as a system of open channels or rivers with junctions and cross sections. As an example, the Pearl River in China is represented by a network of 104 channels, 62 nodes, and a total of 330 cross sections with 11 boundary sections for one of the applications. The simulations are performed with a supercomputer for seven scenarios of water flow and/or solute transport in the Pearl River, China, with different hydrological and weather conditions. Comparisons with available data are shown. The intention of this study is to summarize previous works and to provide a useful tool for water environmental management in a tidal river network, particularly for the Pearl River, China. [ABSTRACT FROM AUTHOR]