A simple route for synthesizing nano-sized beta-tricalcium phosphate (beta-TCP) at room temperature has been developed in methanol solvent. The phase evolution from CaHPO4, intermediate amorphous calcium phosphate (ACP) phases (including ACP1 and ACP2 with different structures) to final beta-TCP with increasing aging time was observed. The formation of beta-TCP phase is favored due to the incor...

Is investment cash-flow sensitivity affected by a country’s capital market imperfection? We take 42 countries as our sample and collect six imperfect capital market measures (ICAM), ie., the stock market capitalization ratio, number of publicly-listed firm, stock turnover ratio, bank loan ratio, long-term debt ratio and the interest spread. Using a two-step approach, negative relationships betw...

In this paper, individual and combined effects of distributed and local geometrical imperfections on the limit load of an isotropic, thin-walled cylindrical shell under axial compression are investigated. First eigen affine mode shape imperfection pattern (FEAMSIP) is taken as distributed geometrical imperfections and dent as local geometrical imperfections. Limit load of the cylindrical shells...

The grade of a quartz ore is not a measure of its chemical reactivity. A high grade quartz sample (B) showed low reactivity in sodium silicate production. Structural imperfection usually occurs due to lattice defects in the quartz tetrahedron as a result of several substitutions that happen during mineralization. The random distortion of the quartz tetrahedron that could be affected by various ...

The previous energetic variational analysis of critical loads and of the choice of finite strain measure for structures very weak in shear, remaining in a state of small strain, is extended to the initial postcritical behavior. For this purpose, consideration of the transverse deformation is found to be essential. It is shown that imperfection sensitivity of such structures, particularly lamina...

The purpose of the present study was to investigate several components of the Perfectionism Social Disconnection Model (PSDM) by assessing the relationships among perfectionism, insecure attachment, and social disconnection in adolescents. This study examined perfectionistic self-presentation, attachment style, and experience of disconnection from social environment in a sample of 178 adolescen...

in this paper, the finite element analysis of stability problem of vehicle composite drive shafts subjected to torsional loading is studied. first, using the minimum total potential energy principle, the governing equations are derived and then they are solved by finite element method. the initial geometrical imperfection which is usually in the form of radial displacement, is taken into consid...

Modern real-world applications are forced to deal with inconsistent, unreliable and imprecise information. In this setting, considerable research efforts have been put into the field of caring for the intrinsic imprecision of the data. Indeed, several frameworks have been introduced to deal with imperfection such as probabilistic, fuzzy, possibilistic and evidential databases. In this paper, we...