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In order to study the superficial and deep causes of public work quality accidents, we have collected 27 cases of construction quality accidents of public buildings publicized by the Japanese media. Statistic analysis is conducted by using the cause factor analysis method of failure study. We have discussed the superficial causes of construction quality accidents of public building, and deep impact...
Electromigration-based deposition (EMBD) is an additive nanolithography technology for the fabrication of three-dimensional (3D) nanostructures. Key techniques for extending the capability of EMBD have been tackled experimentally including the deposition against a non-conductive surface, shape control of the as-deposited nanostructure, and continuous mass feeding. The process is based on nanofluidic...
The supercritical fluid assisted atomization process—a novel supercritical fluid technology—was developed for the preparation of microparticles. Microparticles of erythromycin, griseofulvin and tetracycline were precipitated from solvents, comprising of ethanol or acetone, to examine the feasibility of application of this process in the preparation of drug microparticles. The particle morphology,...
An analytical approach is taken to investigate SH wave propagating in layered piezomagnetic/ piezoelectric structure where a thin piezomagnetic film with a mass layer bonded to a semi-infinite piezoelectric substrate. The dispersion relations are obtained and the effect of the thickness and the density of the mass layer on the properties of the SH waves are figured and presented.
Accurate material parameters of the door trim panel is a prerequisite to obtain accurate occupant collision responses in full-scale side crash simulation,. However, these parameters are usually difficult to be obtained directly. A side impact sled with the real door and B pillar was developed in this paper. The injury parameters of the side impact dummy (ES-2) were obtained from sled tests. The finite...
As the most critical component of a deep manned submersible, the manned pressure hull provides a safe living space for pilots and scientists under the deep sea pressure and its weight occupies almost 1/3 total weight of the manned submersible. So the pressure hull should be designed to have enough strength and should be as light as possible. However, a comparison of the current available design rules...
In metropolis developing process, The historical block existence has “the landscape effect” specially. Its material (or spirit) the essential factor is already paid attention to the non-material to the city history influence. While “two societies” development, “City and countryside integration” advancement quickening, “The historical block” while brings the cultural landscape to the city, Also giving...
With a thermo gravimetric analysis apparatus combustion characteristics experiments of sawdust, corn straw and mixtures of them were done at 10,20,40°C/min heating rate. The combustion activation energy was acquired by kinetics analysis. The experiment results show that the ignition characteristic and synthesis combustion of corn straw are better than sawdust. The mixture of corn straw and sawdust...
In order to study the effect of chlorine dioxide(ClO2) inactivating Cryptosporidium and Giardia in water, different factors as ClO2 concentration, contact time, pH, temperature, turbidity and organic content which might influence the inactivation were studied by using fluorescence staining method. With the Cryptosporidium and Giardia were 1×106 cysts/ml, turbidity 1.0NTU, temperature 22¡æ, pH 7.5,...
This paper investigated the choice of suppliers for emergency supplies. An evaluation index system which is suitable for the choice of suppliers for emergency supplies was constructed according to the characteristics of emergency supplies. Since traditional Analytic Hierarchy Process (AHP) method does not consider limited resource constraints, this paper proposed that the combination of AHP and linear...
A single neuron self-learning PSD controller is used to perform deposit dimension control during spray forming process. Simulation results show that control performance of PSD controller is satisfied, override and steady state error are zero at three predetermined target value, and corresponding response time is short too. PSD closed-loop control experimental results show that the average deposit...
In this paper the filed characteristic in reverberation chamber is simulated based on FEKO software. The results show that the position of the stirrer has important influence on field uniformity. The transmit antenna position and direction influence the field uniformity. With the conductivity increasing, the field strength in the chamber increase. With the permeability increasing, the field strength...
This paper presents a simple approach to work out maximum flows at minimum cost. The algorithm, on which the algorithm depends, is verified strictly. The algorithm can obtain a lot of adjusting paths in every iteration. An example is given to demonstrate the use of the algorithm. The algorithm has the merits to be programmed easily and of good convergence, and many experiments have verified its great...
As the key contact material part in ultrasonic motor (USM) system, friction materials play a very important role in USM by their influence on its efficiency, speed, torque, etc. Due to the special driving principle, contact and output properties of USM are influenced strongly by wear of friction material. Therefore, studies on special and high performance of friction material for USM are essential...
Precision forging is defined as a near net-shape forging operation which generates high quality parts concerning surface quality and dimensional accuracy. In particular gears offer a wide application field for the precision forging technology. Advantages like shortened production cycles achieved by eliminating machining operations and the saving of raw material contribute to the ongoing cost-saving...
GMZ bentonite is chosen as the main buffer material to be mixed with quartz sand in different sand addition of 0, 10, 20, 30, 40 and 50%. Laboratory tests were conducted on the compacted bentonite-sand mixture for swelling strain. Test results show that quartz sand can restrain the swelling deformation property of bentonite-sand mixture, and the maximum swelling strain decrease with sand addition...
his paper introduces multiple solutions to maximum flow and presents a simple approach to work out some special maximum flows. The result by the algorithm has double meanings: that is to say, the maximum flow not only has saturated edges as many as possible, but also has edges as small as possible, namely more zero-flow edges. As a result, it can optimize execute efficiency of algorithm to the utmost...
Microfabrication is a critical area to many branches of science and engineering. In this work-in-progress paper, we describe our plan to introduce microfabrication technology in a comprehensive, cross-curricular way through lectures, demonstrations and experiments from freshman through junior classes across four disciplines (Electrical and Mechanical Engineering, Chemistry, and Physics). Immediately...
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