Papers by Keyword: CSP

Abstract: Innovative materials and structures are analyzed in this paper. The quality indicators of the wet front systems could be improved by possible expanding the range of mineral fillers due to the use of raw materials nanotehnological carbonate.This work is dedicated to use of nanofilled compositions for plastering in order to expand the competitiveness of Russian producers. It presents an experimental method of determining strength of the separation of the sample solution from the hardened base (brick or concrete). Educed the effect of the sludge and the PCC on the plasters composition.

Abstract: Backward Ultra-fast cooling (UFC) plays a key role in low-cost dual-phase steels production. Cooling process control system for backward UFC was developed to meet the process requirements. Basing on basic theory of heat transfer, cooling control model was established to accomplish temperature calculation. To deal with the influence of technological conditions fluctuations an adaption system, including self-learning function and feedback function was proposed to intelligently realize temperature correction. The developed cooling strategy can achieve diversified cooling path control. The controlling of significant technological parameters, including cooling rate and air cooling time for dual-phase steels, was also accomplished. Furthermore, flexible and diversified UFC strategies were developed aiming at high temperature precision and low temperature deviation control in thickness direction. The system has been applied successfully in dual-phase steel production with high stability and reliability. The precision of medium temperature (MT) can be controlled within ±10°C, and the UFC delivery temperature (UFC-T) can be limited within ±30°C of the target values.

Abstract: Titanium Dioxide is an important material that is used in many industrial applications such as photo-catalysis, glass-defogging, self-cleaning, waste water purification and anti-bacterial sterilization. The strong photo-catalysis of TiO₂, and therefore its ability to decompose dirt and organic contaminants makes it an excellent top-protective layer candidate for CSP reflectors. The aim of this study consists of the deposition of a transparent and hydrophilic TiO₂ layer on top of the Concentrated Solar Power (CSP) mirrors without altering their specular reflectance. The strong photo-catalysis and hydrophilicity of TiO₂ will decompose the dirt and organic matter on the surface of the mirrors, which would be cleaned away from the reflectors’ surface by rain, therefore minimizing the use of water for cleaning the CSP mirrors.In this study, polycrystalline anatase TiO₂ layers were deposited on glass substrates with different thicknesses. The contact angle measurements show that the hydrophilicity of TiO₂ increases with increasing surface roughness, with Water Contact Angle (WCA) of 52°and 30° for 48 nm and 100 nm, respectively. Super-hydrophilicity (WCA < 5°) was achieved for thicker TiO₂ layers, with WCA of 8° and 1° for 177 nm and 220 nm, respectively. The deposition of a 48 nm-thick TiO₂ layer on glass showed a high transmittance in the visible and Near Infrared (NIR) range (75%), whereas the transmission decreased with increasing thicknesses of TiO₂. Therefore, a TiO₂ layer of 48 nm thickness is suggested in this study as a hydrophilic top-protective layer since it preserved the specular reflectance of the mirrors (97.5%) in the NIR range, compared to 98.6% without the TiO₂ layer.

Abstract: Based on the basic characteristics of Compact Strip Production (CSP), this paper studies the composition design of Nb micro-alloyed pipeline steel, proposed eliminating mixed grains production control technology, also studied the microstructure and properties of steel pipe produced by Electric Resistance Welding ( ERW). Its performance meets API 5L specification and the project technology conditions, used for materiel of steel pipe for oil and gas pipeline project.

Abstract: The CSP method has been extremely effective in checking for, and finding, attacks on security protocol. On the other hand, it has been limited to showing that a given small instance, usually restricted by the finiteness of some set of resources, is free of attacks. In order to resolve this problem, the data independence has been developed by Roscoe. This paper first introduce the new process to expand the CSP model on the base of data independence, and present the whole CSP model of Yahalom and its formalization description. At last, the checking is accomplished by writing in script language CSP_M.

Abstract: This article explains a technique in which equations are developed to produce the irradiance profile around the receiver of LS2 collector using a vigorouslyverified MCRT model. A large range of test conditions including daily normal insolation, selective coatings and glass envelop conditions were chosen from the published data by Dudley et al. [1] for the job. The R² value is excellent that varies between 0.9857 and 0.9999. Therefore, these equations can be used confidently to produce boundary heat flux profile of the collector at normal incident for conjugate heat transfer analyses of the receiver.

Abstract: By the means of Metallographic analysis, scanning electron microscope (SEM), and energy spectrum analysis, the development of SPA-H surface middle longitudinal crack was studied. To find out the causes of the longitudinal crack, statistical method was adopted. The result shows that, the generating process of longitudinal crack was: the changing of mould powder owing to Ti and Al element, low overheating degree, and bad slag smelting, which leading to bad transfer heat of slab and depression. For the thermal stress of solidifying contraction, molten steel static pressure, and mould friction, the stress concentration was produced in the weak place of solidified shell, for example, in the small equiaxial crystal less than 1mm. the cracking occurred when the stress more than allow strength of high temperature slab.

Abstract: As an emerging technology, brain-computer interface (BCI) bring us a novel communication channel which translate brain activities into command signals for devices like computer, prosthesis, robots, and so forth. The aim of the brain-computer interface research is to improve the quality life of patients who are suffering from server neuromuscular disease. This paper focus on analyzing the different characteristics of the brainwaves when a subject responses “yes” or “no” to auditory stimulation questions. The experiment using auditory stimuli of form of asking questions is adopted. The extraction of the feature adopted the method of common spatial patterns(CSP) and the classification used support vector machine (SVM) . The classification accuracy of "yes" and "no" answers achieves 80.2%. The experiment result shows the feasibility and effectiveness of this solution and provides a basis for advanced research .

Abstract: It was analysed that the causes for the poor wear resistance of roller, fracture of roller and the surface of the roller flaking off were researched. Introducing CSP plant carried through technical and improved works about work roll material and using system in order to improve strip quality and decrease producing costs. It’s effective to resolve wear and breakage and spalling of the work roll and improve profile control and so on.

Abstract: The influence of RE on corrosion rust layer of low carbon steel in CSP in a simulated coastal-industrial atmosphere was investigated by weight loss, SEM, XRD, and electrochemical measurements. The results demonstrate that the corrosion rate of low carbon steel in CSP with RE is higher at the initial stage and then lower in the late stage than that of samples without RE, which is caused by the formation of a compact and continuous rust layer with the addition of RE. The relative content of α-FeOOH and Fe3O4 in rust increased in the low carbon steel with RE indicates an improved protective ability of the rust. Using the analysis of resistance, the EIS results also indicate that the enhancement of protective ability of the rust layer by the RE is the main reason for increasing corrosion resistance of low carbon in CSP in simulated coastal atmosphere.