Applied Mechanics and Materials Vols. 71-78

Abstract: Inorganic salt hydrates as a new type of clean and renewable energy storage materials are widely used in a variety of fields due to their high volumetric latent storage density. However, the supercooling and phase separation effects limit their applications. In this paper, the characteristics of inorganic salt hydrates as PCMs were introduced, and the supercooling and phase separation for inorganic salt hydrates as PCMs were summarized in details. Then, some new approaches of nucleating and thickening agents to overcome the supercooling and phase separation were presented. Finally, the prospects and new trends of salt hydrates as PCMs in the future were also demonstrated.

Abstract: The applications of inorganic phase change materials (PCMs) in building energy saving have been investigated within the past decades. In this paper, the contents of operative principles of applying inorganic PCMs in buildings, incorporation methods, and its applications in building energy saving in the fields of PCM wallboards, floors, and roofs and so on were summarized in details. Finally, some problems and new trends in the future are also discussed.

Abstract: Though statistically analyzing ten typical wells of kelly cock valve failure in certain oilfields, the main failure modes of the kelly cock valve were determined. Aiming at these modes and combining with mechanical analysis of knob, upper seat and main body of the kelly cock valve, its finite element calculation had been implemented and the weakness of all parts was found. By numerical modeling of the flow field of a kelly cock valve it was found that the velocity of fluid rapidly increased at upper and lower valve seats and this could easily prick out ball valves and valve seats, there was a annular low-velocity zone of minimum speed between the ball valve and the inner wall of the main body and this caused solid aggregation at this area. The research in this paper made the modes and causes of kelly failure to be recognized systematically. The results provided theoretical foundations of further improving the design and reasonable using of a kelly cock valve.

Abstract: Selenium species analysis based on chromatography hyphenated techniques including reversed-phase, ion-exchange, size exclusion, affinity chromatography and so on were summarized in this paper, and the new trend for selenium species analysis in the future was also carried out.

Abstract: The study of urban competitive power of the urban agglomeration on the west side of Taiwan Straits has both theoretical and practical significance. According to constructing index system of evaluating and using grey relational synthetic evaluation, the assessment and comparison are progressed by the urban competitive power of the urban agglomeration on the west side of Taiwan Straits. It is found that during the seven factors which influence urban competitive power of the urban agglomeration on the west side of Taiwan Straits, the influencing effect from strong to weak sorting is Government Power, Science and Education Power, Economic Power, Development Level, Financial Power, City Service and Industrial Structure. Meanwhile, against the existing factors, some suggestions of the competitive power upgrade will be pointed out.

Abstract: On the basis of an integration project of intelligent building system completed by the author recently , and through analysis of the concept for IBMS, this paper explains in detail engineering design plan. The paper also presents in detail the design of power distribution monitoring and management system, illumination monitoring and management system, and the realization of their functions. We can see that application of intelligent building management system can bring enormous direct economic benefits to the terminal. The indirect benefits in the control, management, information and decision making are immeasurable.

Abstract: This study focused on the investigation of the effectiveness of nano-plasma negative air ionization (NPNAI) and photocatalytic oxidation with combining nano-Ag/TiO₂ as photocatalyst and UV light irradiation to enhance the disinfecting capability of full-scale bacterial restraining equipment in the medical nursing institute. Results show the bacteria removal efficiencies (η) of different methodologies, respectively. In this removal method, the contributions of photocatalytic oxidation (PCO) as nano-Ag/TiO₂ (ave. bacterial restraining rate = 73%) were higher than those of NPNAI (ave. bacterial restraining rate = 17%) for the removal of airborne microorganisms. The proposed equipment can disinfect air to restrain bacteria effectively as demonstrated on-site in medical nursing institutions; the results will be valuable references for designing a full-scale commercialized device for large-scale applications in the future.

Abstract: Past assessments of the carbon dioxide emissions attributable to buildings in Taiwan generally employed conversion formulas based on the floor area of legal buildings, and did not perform any quantitative assessments of illegal building space. As a consequence, this study builds on past research and places special emphasis on the effect of building violations. The study employed building violation data was derived from inspections performed by Tainan City Government from 2001 to 2007, a classification of illegal structure type, and environmental load analysis to derive the carbon dioxide emissions of four major types of building violations in Tainan City. It is found that reinforced concrete and light steel scaffolded concrete accounted for a combined share of 89% of all illegal structures in the city. In the floor area of illegal structures built each year in Tainan City accounts for roughly 5.6% of the floor area of authorized construction during the same year, but this quantity has been neglected in past assessments of building life cycle environmental load.

Abstract: In this paper, flocculation process was applied to the treatment of potato starch wastewater. The Influence of flocculent types, dosage of flocculants, pH, dosage of coagulant aid polyacrylamide (PAM) and sedimentation time on flocculation efficiency was studied, and principal factors of influence flocculation pretreatment of potato starch wastewater and the optimum flocculation conditions were determined by orthogonal experiment. On the optimum conditions which had the advantage of better treatment efficiency with chemical oxygen demand (COD) removal rate of 40.55% , the suitable pH(7) in favour of the following biological treatment, high yield of sludge of 1.59g/L wastewater which could be used as animal feed or fertilizer and increase economic benefits.

Abstract: The goal of continuous tracking between different video problem, a change of scene with Intelligent Agent between the goal of achieving the automatic extraction and identification; improved SIFT algorithm, to factor in the selection of scale space with the goal of scaling the size of adaptive change, overcome image rotation, scale Scaling, brightness change, disturbance, maintaining a change of perspective, affine transformation, noise stability, from different imaging conditions and complex scenes of dynamic video images to extract key points and matched to achieve different video continuous track between the target image. experiments show that the algorithm real time, robustness, matching accuracy.