Advanced Materials Research Vols. 282-283

Abstract: The relevant introduction development of the micro electromechanical systems (MEMS) is carried out in this paper. The pressure sensor is an important component of micro electromechanical systems (MEMS). Many aspects of the pressure sensor are studied，simulated and analyzed by us. The principle of work of the pressure sensor is elaborated in details and the material selection is studied also. The correlative performance indexes, such as precision and the repeatability of pressure sensor, are explored. In the following part of this paper, through the finite element simulation software, the analytic study of some performance parameters of the sensor chip is carried out in detail. Through the analysis, we find that the sensor designed here has many advantages.

Abstract: Torpedo-ladle was widely used in hot metal transportation. As its insulation properties had deep influence on the quality of iron and steel during the metallurgy process, the method to improve the insulation properties of torpedo-ladle was concerned widely. The results of this paper showed that either using lower thermal conductivity or increasing the thickness of insulation lining could effectively improve torpedo thermal insulation properties by solving the 3-D model with ANSYS.

Abstract: A new partially blind signature scheme is proposed based on Schnorr blind signature scheme. Compared with the previous schemes, the proposed scheme has lower computations and shorter signature size. By conversely using the proposed partially blind signature, a fair e-payment protocol is given. An advantage of this protocol is that two participants achieve the goals of exchanging their items without intervention of a third party. The low computations and good properties of the underlying partially blind signature guarantee that the proposed protocol has needed efficiency and security.

Abstract: The amino acid sequence of Cation Diffusion Facilitator from Populus trichocarpa, Thlaspi goesingense, Arabidopsis lyrata subsp. Lyrata, Brassica juncea and Medicago sativa, registered in GenBank, were analyzed and researched by the bioinformatic tools in the several aspects, including hydrophobicity / hydrophilicity properties, post-translational modification, secondary structures prediction and transmembrane domain. The results showed that Cation Diffusion Facilitator is a hydrophobic and transmembrane protein, which exists in endoplasmic reticulum and other secretory pathway. The main motifs of predicted secondary structure of Cation Diffusion Facilitator are alpha helix and random coil.

Abstract: To investigate the absorption of ginsenosides Rg₁ and Rb₁ in Bazhen Decoction at different intestine segments of rats and the influence of the drug solution concentration, pH, P-gp inhibitor on ones. The intestine cannulation was performed for in situ recirculation. The concentration of ginsenosides Rg₁ and Rb₁, and phenol red in the flux were measured by the reversed phase HPLC and ultraviolet spectrophotometry, respectively. The absorption of ginsenosides Rg₁ and Rb₁ in Bazhen Decoction in intestine of rat show first-order kinetics with the absorption mechanism of passive diffusion. Ginsenoside Rg₁ has specific absorption locus of duodenum and ginsenoside Rb₁ has specific absorption locus of jejunum. Meanwhile, ginsenoside Rb₁ is the P-gp substrate, and could increase its fraction of bioavailability by corporation with P-gp inhibitor.

Abstract: Anodic aluminium oxide (AAO) templates were fabricated via a two-step anodization method. On the basis of getting the optimum preparation parameters of AAO templates, effects of two different pore-extending methods on morphology of AAO templates were studied. Field emission scanning electron microscope (SEM) was used to research surface morphology of AAO templates. The SEM images indicated that different pore-extending methods had a significant influence on morphology of AAO templates. The shape of nanopores of AAO templates was cylindrical after floating pore-extending method, but it was truncated cone-shaped with one dimensional gradient using immersed pore-extending method. Meanwhile, mechanism of different pore-extending methods on morphology of AAO templates was elucidated.

Abstract: CdS(Cadmium sulfide)/PAMAM(polyamidoamine) Nanocomposites were in-situ prepared taking PAMAM dendrimers as stabilization in water. The prepared solution containing photoluminescent semiconductor CdS QDs(Quantum dots) was utilized for detection of aged fingermarks on adhesive tape strips. The fingermarks were aged for 1 d, 7 d and 30 d in nature light respectively. The results show that the latent aged fingermarks treated with CdS/PAMAM nanocomposites emit yellow luminescence under ultraviolet excitation of 365 nm in the dark. Aged fingermarks were detected successfully with better resolving rate comparing with existing nano-scale commercial TiO₂ powder suspension.

Abstract: On the basis of dynamic trust theory, the paper proposes a staggered theoretic model which describes dynamic collaboration trust in supply chain from the view of collaboration relationship, which studies the dynamic dissimilar effect of institution-based trust on collaboration trust and cooperation intention in differential stage. More than forty supply chain companies in different fields are chosen to be the objects of experimental research and a sample data of more than three hundred actual members is finally collected. Fact or analysis and structural equation modeling are implemented to validate the hypothesized relationship between institution-based trust, collaboration trust in supply chain trust, and cooperation intention in theoretic model.

Abstract: In order to study the law of emergence and its internal attributable causes according to the resources owned by agents that interacts with each other in the complex adaptive system about the supply chain, at the beginning the resources which the agents in the supply chain draw are defined as followings: the resources outside system, the resources in the system, the resources that other else agents own, and the dynamic resources the agent itself own, the multi-compartment agent of resources. The operating points of eight resources owned by agents interact with each other are controlled through eight random numbers, the direction, degree, speed and stability of resources flow during interaction among agents are described respectively by matching capability, matching speed and matching time; Furthermore, the evolution process about the resources among agents interacting is described by rules of GEF(Global Evaluate Function) and LEF(Local Evaluate Function), resources flow model of complex system about the supply chain is established; Eventually, through simulating respectively in the Swarm platform both the proposed model and the simple model that doesn’t cunsder the multi-compartment agent but the linear sum of all resources, it is found that the former describes the change rule of the resource more accurately in the supply chain system. It means that syncretizing eight resources, which interact and inter-constrain in the system, to an indiscerptible one is the attributable cause of the emergence.

Abstract: Nucleating mechanism and controlling methods of Al₂O₃-TiO₂ inclusion formed during steel cooling process is analyzed in this paper. According to the theory of nucleation, only TiO₂ could satisfy the critical requirement of homogeneous nucleation to solidify stably when the temperature declines to less than 1863K. Furthermore, the generation of Al₂O₃ adhering on the surface of solid TiO₂ is going to take place through heterogeneous nucleation, and then Al₂O₃ interacts with TiO₂ to form Al₂O₃-TiO₂ complex oxide. There would be no Al₂O₃-TiO₂ complex oxide or much less Al₂O₃ on condition that the w_Ti·w_O2 is less than 3.96×10^-8. Both deeply deoxygenating treatments and controlling the mass of Ti-Fe alloy added into steel are effective means for improving steel quality.