以浮选矿浆离子组成控制药剂制度的原则

本文讨论利用矿浆的离子组成优化浮选中的药剂制度。这种优化系基于电化学模型。研究时采用了热力学计算法和直接的电位测定矿浆中离子组成法。提出用以控制黄药、硫化钠、烷基硫酸盐和硫酸铜的用量。采用选     

共震源数据叠前偏移的隐含静校正

在共炮点道集叠前逆时偏移中,由于地貌和近地表速度的变化而引起的静校效应可以隐式静校而不必以显式静校加以精确补偿。通过外推实际记录位置的观测数据,可实现接收点静校正;通过计算实际震源位置的激发时间成象条件可实现炮点静校。     

Experimental investigation of the normal spectral emissivity and other thermophysical properties of pulse-heated Ni-Ti and Au-Ni alloys into the liquid phase

1. Introduction Metal working industry needs accurate thermo- physical properties of liquid metals and alloys as input data for different simulation routines to im- prove the performance of their products. Within this paper we continue the systematic investigation of the dependence of emissivity of binary alloys on the relative concentration of the constituent elements (for a previous paper see [1]). 2. Experimental method A fast ohmic pulse heating technique is applied to heat metallic wire-s…     

A Model for Flooding Prediction in Circular Tubes

Flooding phenomenon limits the stability and the flow of a liquid film falling along the walls of a channel in which a gas is flowing upwards.As known, the entrainment effect can completely prevent the liquid to fall from its natural flow. The present work proposes a new mechanistic model for the prediction of the onset of flooding in vertical and inclined pipes in the presence of obstructions, as well as taking into account the viscosity effect. The good performance of the model in the different geometrical conditions and for variable viscosities of the liquid component assesses the validity of the hypothesis that the instability of a wavelike disturbance limits the countercurrent flow in a channel.     

钻头在地下造型上的扩展作用

技术和变化是上游产业的工作语言。随着学科涵盖范围（比如钻井、遥测技术和地层评价）不断拓展，留下的问题便是“显现出的差异会比过去的大吗？”最近汇合在一起的三件事——最大储层接触（MRC）井、地质导向和正在增加的井下智能——正在形成一种截然不同的地下环境。