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Sea-crossing bridges are exposed to great waves. The wave induced dynamic effect on the structural response of the pier was carefully studied in this paper. The pier of Pingtan Strait railway bridge was taken as the example structure. The modal and dynamic response of the example pier under regular wave loadings were carried out using finite element software USFOS. The dynamic and static response...
Using field survey and literature analysis method from 2014-2015, taking Beijing Tianshou cemetery and the Babaoshan peoples cemetery as the research object, we study the characteristics of plant landscape of the cemetery of modern city. The results show: many pine and cypress trees and native plants are planted in the two cemeteries. Integration of Chinese and Western, beautiful scenery and good...
To solve problems that existed in current omni-directional vehicle, such as high energy consumption and the mismatch between the gimbal and the movement of the chassis, a kind of Mecanum wheels control method is designed. Based on the principle of omni-directional movement and the analysis of kinematic model of vehicle, the chassis structure model is constructed. It is observed that the power consumption...
The effects of Diethyl aminoethyl hexanoate (DAH) on one-step micro-propagation culture with leave, petiole, and root explants were investigated. It was found that adding DAH into basic media increased the one-step culture rates from about less than 40% to more than 50%. For leaf explants, the optimum DAH concentration is 0.08 mg·L-1; petiole, 0.32 mg·L-1, and root explant,...
The planned Indonesia Banten power plant project is programmed with total installed capacity of 2x670MW, its cooling water discharge is 59.6m3/s. Approximately 0.8km southwest of this project, there is another power plant named Suralaya has been built. Two power plants both adopted once-through seawater cooling system that taking cooling water from the Java Sea directly. When two power plants running...
The thin-walled parts of the tank are widely used in aerospace filed and the accuracy is the basis requirement for ensuring the usability. Due to the low rigidity of the thin-walled parts, the milling force becomes a major factor for the machining deformation. Based on analysis the relationship between feed speed and the length of the cutting arc, the feed speed optimization method is proposed to...
The purification efficiency of chemical oxygen demand(COD) and the change of dissolved oxygen (DO) of domestic sewage was researched by testing 9 species of wetland plants along the Songhua River in Jilin City in this paper. It is shown that 9 species of plants can purify domestic sewage, and the purification ability is varied in different species. Polygonum persicaria L., Rudbeckia hybrida Hort....
Every link of power system may exist security risks, power industry funds and technology is highly concentrated, the production equipment is very expensive, its operating parameters almost reached the extreme, physical simulation of its production process of experimental teaching costs are extremely high, resource consumption is huge, and may cause malignant environmental pollution. Teaching, training...
Zinc oxide surge arrester with gap has been widely used in transmission lines. There is no effective method to detect the performance degradation of the current, because of its normal operation without divulge current. This paper presents an experiment about the characteristics of lightning impulse aging and the surface temperature increment of the zinc oxide arrester (MOA) by test. According to this...
In this paper, study the influence of anti-stripping agent on the mesoscopic strength of basalt asphalt mixture in seasonal frozen region under different states and temperatures by experiments. Meanwhile Accurately and objectively evaluate the characteristics on engineering performance of two kinds anti-stripping agents. Results show that anti-stripping agent improves the mesoscopic strength of basalt...
Complex power equipment has the characteristics of complex structure, involving a wide range of knowledge, many disciplines, difficult in system simulation, many of the equipment is running in high temperature, high pressure, high voltage and other extreme and dangerous environment, the real experiment has high risk, high energy consumption, high cost and can not carry out, not all the related professional...
With the fast development of the social economy and the improving diverse material life, the demand for a much higher quality of living environment is increasing, thus, the importance to design the urban landscaping for a city is superior to that of the city planning and its ecological environment. Considering the circumstances that the extensive pattern of management in urban landscaping and the...
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