Magnetic separation is often considered pertinent for manganese ore beneficiation when the abundant with siliceous rich gangue mineral phases. However, process deemed to be inapposite ferruginous type of ore, and remains a grey area research. In present investigation, two different types were studied in detail understand influence mineralogy on their magnetic performance. Detailed experiments p...

In this paper, the effectiveness of stiffness and damping of bearing is investigated on the natural frequencies of the rotor-bearing system. The rotor-bearing system consists of a shaft, two bearings and a disk between two bearings. Parallel spring-damper in horizental and vertical directions is considered for modeling the stiffness and damping of bearings. The gyroscopic effect is also conside...

I n 1925, Gershenson started laboratory cultures from 19 female Drosophila obscura that were collected from a forest near Moscow. After recounting his difficulties raising the flies (partial success achieved with a diet of potatoes and fermented raisins), he noted that progeny from most cultures contained an approximately equal sex ratio [1]. Several cultures, however, yielded progeny with high...

This article investigates the localization problem of a network in 2-D and 3-D spaces given positions anchor nodes global frame internode relative measurements local coordinate frames. It is assumed that frames different have unknown orientations. First, an angle-displacement rigidity theory developed, which can be used to localize all free by known (local position, distance, bearing, angle, or...

Compared with the amount of research undertaken on vertical-bearing piles in karst areas, there are fewer studies stability horizontal-bearing (e.g., anti-slide and supporting piles), little way theoretical developments. In order to study influence cave front under pile anti slide pile, this designs orthogonal test, carries out numerical simulation by using ABAQUS finite element analysis softwa...

Abstract Hydrodynamic herringbone-grooved journal bearings (HGJBs) are analyzed by solving Navier–Stokes and energy equations. It is well known that the load capacity of hydrodynamic may be affected high temperatures low oil viscosity. Therefore, main objective this study to understand pressure distribution HGJBs under different viscosity eccentricity ratios. In paper, 3 configurations studied,...