Advanced Materials Research Vols. 912-914

Abstract: The properties of interface and bonding between the liner and propellant were systematically studied with regard to MAPO content, filler and plasticizer types, and vulcanized agent. It was indicated that the bonding strength of liner and propellant arrive the highest value 0.32MPa when MAPO contents was 3% and there is a little effect on bonding strength for vulcanized parameter. Moreover, the bonding strength gets weaker when the content of plasticizer decreases. Significantly, the molecular sieve can improve bonding strength greatly. Compared with other cure agent, TDI was the best vulcanized agent, and when it was used in the vulcanized system, the highest value of bonding strength between liner and propellant could be obtained.

Abstract: The concept and the testing method of dynamic pile testing and the rationale, preparation, data collection, and data processing of the low-strain reflection wave method are described. In addition, some of the disadvantages inherent to low-strain detection and experiences related to the correlation between detection data and pile realities are discussed.

Abstract: Considering the Lop Nur Lacustrine plain saline soil is a special soil which with poor engineering properties such as collapsible and expansion. Through an experimental research on the saline soils stabilized by lime, cement and a polymeric solidified material was conducted. The unconfined compressive strengths and water-related stability of stabilized saline soils were discussed. It was shown that unconfined compressive strength and water-related stability of stabilized Lacustrine plain saline soils attained corresponding engineering standards and that it could be used as roadbed fillings., which could provide a reference to prevent and treatment about the dangers of Lop Nur Lacustrine plain saline soil.

Abstract: A new material of copper(II) complex (complex 1) with taurine Schiff base has been synthesized and characterized by elemental analysis, ESI-MS and IR spectra. 1 was tested against HepG2 cell lines with IC50 values of 12.89 μM. With the concentrations of 1 increasing, the population of apoptosis was 1.28% for 0 μM, 24.4% for 10 μM and 47.9% for 20μM, and the population of G2 phase was 19.2% for 0 μM, 34.4% for 10 μM and 42.9% for 20μM, respectively. 1 showed significant cytotoxic activity against HepG2 cell lines.

Abstract: The magentic susceptibility of rocks, breccia, dolomite, diabase, slate, siltstone and tuff are main concern, have been measured in the Dongchuan region of Yunnan, China. The experimental data suggest that different rocks have different magnetic susceptibility, and magentic susceptibility of igneous rocks is the highest and has big variation, that is represented by diabase, and these characteristics always react on identification of rock types quickly in the field operation and laboratory technique. As an economic and effective technique, the magentic susceptibility is important magnetic parameters for the rocks in Dongchuan, at the same time is also an obvious sign in looking for cupreous magnetite.

Abstract: Through the work of measuring magnetic susceptibility of the cores in Yinmin mining area, Yunnan, one can draw a conclusion that different strata have different magnetic susceptibility, and variations of magentic susceptibility as a whole have significant changes, concerned primarily with mafic ferruginous lava, iron ore, ferruginous dolomite and fine grained diabase in the Luoxue Group and the Yinmin Group. The study of magnetic susceptibility of the rocks is not only relevant to magnetic prospecting and the boreholetricomponent magnetic, but also a rapid and effective means of geological exploration for the iron-oxide copper gold (IOCG) deposit in Yinmin mining area.

Abstract: Pure Cu samples were subjected to equal channel angular pressing (ECAP), and the corrosion resistance of the samples was investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy measurements in 3.5% NaCl solution. The results show that the corrosion rate of the ultrafine-grained Cu decreases, in comparison with the coarse-grained Cu.

Abstract: Vaporous Hydrogen Peroxide is a kind of decontaminants with the feature of Low-temperature, Non-water, Low-corrode, has great potential in decontaminating sensitive equipments and the inner space of large equipments overseas. The main objective of this study was to study whether Vaporous Hydrogen Peroxide can be used to decontaminate the Military Uniform. For this purpose, a series experiments were carried out. The results show that Vaporous Hydrogen Peroxide can degradation HD,but the efficacy depends on the drop size and density of HD. And Vaporous Hydrogen Peroxide can compatible with Military Uniform, and no corrosive happen. So we have a conclusion that the VHP can be used for the decontamination of HD.

Abstract: A phosphate rock containing MgO 7.95% and SiO₂ 9.64% has fine dissemination size, which is from Yichang city in Hubei province, China. Technical conditions of the ore were investigated by performing the desilication process of double reverse flotation, which adopted GE-609 to flotate silicon. The results showed that under defoamer DE-1 36g/t, phosphate concentrate with P₂O₅ 31.91%, MgO 0.97%, SiO₂ 9.46% and recovery of 88.71% were obtained by employing the process of close-circuit reverse flotation.

Abstract: Different hydrated lime content in asphalt mastic greatly influences the performances of asphalt mixture. The aim of this paper is to study asphalt mastic made with different content of hydrated lime was used in Dynamic Shear Rheological and Viscosity Tests. The optimum hydrated lime content was proposed in terms of test results above. The results illustrated that hydrated lime was an appropriate addition agent which can improve asphalt mastic properties greatly, however, too much hydrated lime may result in the decrease of asphalt mixture performances.