There are various criteria that need to be examined alongside each other when designing a longwall mining system. Challenges such as determination of the supported roof width, support system design, caving height determination, lateral or chain pillar size determination, and optimum support design for the main gate and tail gate roadways have to be tackled for this aim. Three-dimensional analys...

In cylindrical continua, hoop stresses are induced due to the circumferential failure. This mainly happens when the cylinder is subjected to mechanical loads which vary in the circumferential directions. On the other hand, radial stress is stress in the direction of or opposite to the central axis of a cylindrical body. In the present study, the influence of curvilinear anisotropy on the radial...

Hot forging is a common manufacturing process for the production of large quantities of engineering components. Residual stresses are developed in forged components as a result of various aspects of the manufacturing process, including subsequent cooling, and heat treatment. Residual stresses can significantly affect the deformation and fatigue failure of materials. Hot forged EN15R steel bars ...

In this paper, a numerical solution has been developed for hollow circular cylinders made up of orthotropic material which is subjected to twist using micro polar theory. The effect of twisting moment and material internal length on hollow thick-walled circular cylinder made up of micro polar orthotropic material is investigated. Finite difference method has been used to exhibit the influence o...

in his seminal book on the historical periods of western attitudes toward death, philippe aries describes four consecutive periods through which these attitudes evolved and transformed. according to him, the historical attitudes of western cultures have passed through four major parts described above: “tamed death,” one’s own death,” “thy death,” and “forbidden death.” this paper, after explori...

objective: to identify the proportion and some selected characteristics of juvenile diabetics attending birdem hospital. materials and methods: this was a cross sectional study. the study was conducted in the birdem hospital. all diabetic young aged up to 18 years who visit birdem hospital were included in study population. the sample size was 240. results: it was observed that among the respon...

since the end of the nineteenth and twentieth century , the concept of the nature of the language and its function and studied were in change. that changes caused prosecution efforts which made by the western scientists to study most of the world language descriptively and historically ,comparely . khalil is the first who authored the lexicon in arabic language, and who compiled a perfect lexic...

the dynamic response of a transversely isotropic, linearly elastic layer bonded to the surface of a half-space of a different transversely isotropic material under arbitrary shape surface loads is considered. with the help of displacements and stresses green’s functions, an analytical formulation is presented for the determination of the displacements and stresses at any point in both surface l...