A process for removing impurities from copper concentrate prior to smelting is presented here. The concentrate is subjected to thermal decomposition in a vacuum chamber at temperatures of about 950 °C. This pretreatment ...

Internal combustion engines are the most commonly used engines in the automotive world. However, these engines lack an overheating prevention system against cooling system failures when they exceed their normal operating ...

Determining the position of a target is the central issue in several engineering problems, from computer vision to sonar or radar systems. Echo-localization systems use the reflected sound waves to extract information from ...

Motorsports contributed greatly for the improvement of internal combustion engines because they adopted the engine as their primary power unit. This work aims the development of a high performance V8 engine for experimental ...

We develop a general model for adaptive c, np, u and p control charts in which one, two or three design parameters (sample size, sampling interval and control limit width) switch between two values, according to the most ...

We develop a general model for adaptive c, np, u and p control charts in which one, two or three design parameters (sample size, sampling interval and control limit width) switch between two values, according to the most ...

Purpose - The aim of this paper is to present a synthetic chart based on the non-central chi-square statistic that is operationally simpler and more effective than the joint X̄ and R chart in detecting assignable cause(s). ...

At present diverse illnesses exist between soft, mortal and silent, in which some studies of the biomedical try to minimize and/or help to fight these illnesses. Due to this, in this paper presents a processing and comparison ...