In the present investigation, unidirectional grinding marks were attained on the steel plates. Experiments were then conducted using pins of high purity Al, pure Mg and Al-Mg alloys against the prepared steel plates using an inclined pin-on-plate sliding tester. The inclination angle of the plate was varied in the tests and for each inclination angle, the pins were slid both perpendicular and p...

The heating phenomenon of connector terminals in converter stations has become increasingly common, it a serious safety hazared affecting the operation UHV lines. This paper determined overlapping model Al plate-Al plate based on stations, conducted tests which included disassembly and assembly contact surface roughness impact test, pressing force electric composite grease anti-loosening measur...

[1] Abstract: We present an integrated velocity field for the central Andes, derived from GPS observations collected between January 1993 and March 2001 that eliminates the velocity bias between the South America-Nazca Plate Project (SNAPP) and central Andes GPS Project (CAP) velocity fields published by Norabuena et al. [1998] and Bevis et al. [1999]. The reference frame is realized by minimiz...

INTRODUCTION: Recent experience with bicondylar tibial plateau fractures has led to concern over the stability of the posteromedial fragment when using standard lateral plating with anterior lag screws. Loss of reduction of this fragment has led to posterior subluxation of the femur in stance, and a stiff arthritic knee [1]. Historically fixation of these fragments has been performed with later...

Inonotus obliquus is a mushroom commonly known as Chaga that is widely used in folk medicine in Siberia, North America, and North Europe. Here, we evaluated the antimutagenic and antioxidant capacities of subfractions of Inonotus obliquus extract. The ethyl acetate extract was separated by vacuum chromatography into three fractions, and the fraction bearing the highest antimutagenic activity wa...

INTRODUCTION A major theme in developmental biology is the need for cells to integrate multiple signals to make decisions about their fate. To achieve this, regulatory DNA must be structured so developmental control genes are expressed only when a cell is in the correct signaling environment. Furthermore, this regulation must be robust so development can proceed normally even when signaling lev...

geometrically nonlinear governing equations for a plate with linear viscoelastic material are derived. the material model is of boltzmann superposi¬tion principle type. a third-order displacement field is used to model the shear deformation effects. for the solution of the nonlinear governing equations the dynamic relaxation (dr) iterative method together with the finite difference discretizati...

Treatment of displaced midshaft clavicle fractures remains controversial despite several randomized trials and a recent meta-analysis (McKee et al. 2012, Lenza et al. 2013, Rehn et al. 2014, Wang et al. 2015). In the current issue of Acta Orthopaedica, Ban et al. present results of a survey among Scandinavian orthopedic surgeons on attitudes to treatment of displaced clavicle fractures. The res...