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is the porosity when the initial pore water pressure is p0; K0 is the permeability coefficient when the initial pore water pressure is p0; εv is the volumetric strain; p is pore water pressure. As shown in Eq. (2), the permeability coefficient is the function of rock porosity, volumetric strain and pore water pressure. During accelerated creep deformation and failure of rock, the expansion of pore......
of Mg between 2% and 6% leads to significant porosity [45,46]. The results obtained from this investigation show that the shear spinning (at room temperature) has significant effects on the mechanical... Materialia, 2007, 55: 285-283. [46] HIROMI N, KIYOMI T. Effects of Mg contents on porosity formation in Al-Mg alloy DC slabs [J]. J Japan Institute of Light Metals, 2002, 52(7): 293-297. [47] PALIGORIC......
隙度与渗透率关系图 Fig. 2 Plot of porosity vs permeability of Chang-9 reservoir in Ansai area 2.3 圈闭特征 以往研究认为,三叠系延长组油藏类型主要为常规岩性油藏,包括岩性上倾尖灭,透镜体和成岩遮挡等油藏类型.但在实际勘探开发及研究过程中,对于延长组长4+5及其以下层位的油藏并未发现明显的油水界面...] 朱国华. 陕北浊沸石次生孔隙砂体的形成与油气关系[J]. 石油学报, 1985, 6(1): 1-8. ZHU Guohua. Formation of lomonitic sand bodies with secondary porosity and their relationship with hydrocarbons[J]. Acta Petrolei Sinica, 1985, 6(1......
sometimes be outweighed by the altered porosity characteristics of the alloy [10]. As such, antimony is sometimes used as an alternative to Sr for the modification of eutectic Si [11]. The most important... hexachloroethance tablets to minimize the effect of porosity on the scattering of mechanical properties testing results. Tensile testing was carried out on the prepared test bars using an Instron......
in affecting photocatalytic property. The specific surface areas and porosity of the BiOX samples were measured by nitrogen sorption. Figure 5 shows the N2 adsorption– desorption isotherms of as-prepared BiOX... with special reference to the determination of surface area and porosity (Recommendations 1984) [J]. Pure & Applied Chemistry, 2009, 57(11): 603-619. [56] KRUK M, JARONIEC M. Gas adsorption characterization......
regions of the coatings (average microhardness HV0.05 ~600) are about 4 times softer than the inner regions (HV0.05 ~1500), because of their higher porosity and composition, which is mainly.... Stress generated porosity in anodic alumina formed in sulphuric acid electrolyte [J]. Corrosion Science, 2007, 49: 3772-3782. [28] SNIZHKO L O, YEROKHIN A L, PILKINGTON A, GUREVINA N L, MISNYANKIN D O......
in the material promotes the formation of micro-cracks and reduces the performance of the material. The porosity level in the thixoformed alloy is extremely low as compared with the as-cast alloy due..., the reduction in porosity level and fine size of the α(Al) grain as compared to the as cast A319 alloy. In addition, the tensile strength increased in parallel with the increase of Mg content......
improved due to the reduced porosity and the enhanced interfacial bonding. The immersion tests also indicated that the corrosion resistances of the composites were better than those of the bulk alloys... in the junction area of the porous cell. The average porosity of the scaffold was determined using the method in Ref. [30] to be approximately 90%. Fig. 2 SEM images of porous β-TCP+MgO (a) and (β-TCP+MgO)/Zn......
to be the same as that used by ZHOU et al [22] and ZHENG et al [23]. The diameter of sand particles follows a uniform distribution ranging from 1.5 mm to 2 mm, and the initial porosity is 0.36.... porosity and particle size grading. 2) Transform the original sphere balls to quasi- elliptical clumps following the strategies introduced in Section 2.2, and cycle the assembly until the unbalanced......
particles, adaptation abilities and inoculums. Ore characteristics include mineral type and composition, grain size, porosity, acid consumption, free surface area, hydrophobicity, galvanic interactions... significant effect on leach kinetics. The forced aeration may be beneficial to operations where the gaseous porosity is marginal [33]. 3.3 Determination of optimal conditions and validation of model......
