The surface species transformation of oxidized carrollite processing with NaHS and KBX was investigated.Flotation and contact angle tests indicate that the combination of NaHS and KBX takes a better flotation performance than adding NaHS or KBX alone.Thermodynamic analysis, X-ray photoelectron spectroscopy (XPS) Steak Weights and Fourier transform

Introduction: Carotenoids are liposoluble plant pigments.The most common in the human diet are a-carotene, b-carotene, b-cryptoxanthin, lycopene, lutein, and zeaxanthin.Methods: This article provides an overview of the findings on carotenoids to date, their depots in body, recommended daily doses and mechanisms of protective action.We searched PubM

This paper proposes a new method of evaluating the indentation toughness of hardmetals using the length of Palmqvist cracks (C) and Vickers indentation diagonal size (di).Indentation load “P” is divided into two parts: Pi for Collections plastic indentation size and Pc for Palmqvist cracks.Pi depends upon the square of the indentation s

In order to analyze the low temperature friction characteristics of angular Razor Blades contact ball bearings.Firstly,the change of low temperature structure of bearing is analyzed by finite element software,the changes of the low temperature structure,the change of the clearance and the change of the contact angle of the bearing are simulated and

Abstract Background Malalignment of the ankle joint has been found after trauma, by neurological disorders, genetic predisposition and other unidentified factors, and results in asymmetrical joint loading.For a medial open wedge supramalleolar osteotomy(SMO), there are some debates as to whether concurrent fibular osteotomy should be performed.We a