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This study investigates the free vibration and thermal buckling behavior of functionally graded porous nanobeams in magnetic and thermal fields using high-order trigonometric shear stress and nonlocal strain gradient elasticity theories. The results demonstrated the effects of nonlocal differential and strain gradient elasticities on softening and stiffness enhancements, respectively. Additionally, the Lorentz force induced by the magnetic field makes nanobeam's vibratory motion difficult, causing the natural frequencies to increase. This situation can contribute to the dynamic stability of nanobeams exposed to the nonlinear temperature distribution. This study's results will assist in designing and implementing micro/nanoelectromechanical systems. [ABSTRACT FROM AUTHOR]

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Discontinuity bearing rock masses might be subjected to various mass movements due to the steep slopes, alteration, and manmade operational activities. Rockfall will take place in case several discontinuities form prismatic blocks. Special care must be taken in order to determine the rockfall potential and offer precautions. This study deals with the instabilities and rockfall hazard in an abandoned quarry, located in the residential area of Keçiören town, Ankara. This region has been declared as "Rockfall Hazardous," threatening nearby structures. Several rockfall events have been reported, and a huge wedge-shaped block has been released from the slope in the early 2000s. The whole slope has 660 m length and with an average height of 35 m. Eocene-aged dacite is the main rock unit. The whole slope was divided into sections, concerning slope instabilities and discontinuity characterization in order to delineate the Slope Mass Rating (SMR) classes. The rockfall hazard assessment along the slope was performed including the SMR classes, topography, and 2D rockfall analyses. Based on the evaluations, a combined mapping of the slope was conducted to offer mitigation methods. The methods included the removal of blocks from the slope face, covering the slope with anchored steel wire mesh and construction of an earth wall to prevent the possible rockfall damage to residents. [ABSTRACT FROM AUTHOR]

Copyright of Visionary E-Journal / Vizyoner Dergisi is the property of Suleyman Demirel University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)