However, the conventional gold recovery process is cyanidation, due to the recent environmental laws; researchers are looking for alternative methods for the recovery of gold. Furthermore, the copper anode slime is one of the most important secondary sources of gold (about 1200 ppm). So, the main objective of the current work is gold separation from copper anode slime as a rich secondary source...

This paper compares the paradigms of LiDAR and aerophotogrammetry in the context of building extraction and briefly discusses a photogrammetric strategy for refining building roof polyhedrons previously extracted from LiDAR data. In general, empirical and theoretical studies have confirmed that LiDAR methodologies are more suitable in extracting planar roof faces and ridges of the roof, whereas...

Local mesh-refining algorithms known from adaptive finite element methods are adopted for locally conservative and monotone finite volume discretizations of boundary value problems for steady-state convection-diffusion-reaction equations. The paper establishes residual-type explicit error estimators and averaging techniques for a posteriori finite volume error control with and without upwind in...

Systems which exhibit emergent behaviour, i.e., behaviour not determined by the behaviours of the constituents when considered in isolation, are becoming more common due to increasing use of distributed and decentralised designs. There have been claims that formal methods, and particularly refinement, can not be used to derive systems with emergent behaviour. In this paper, however, we argue th...

Background. Thirty refineries operate within Japan with a total crude processing capacity of about 4.8 million bpd. Capacity and total product demand is closely balanced. Almost all refined products are sold to the domestic market, although Japanese refineries occasionally import and export products between other Asian countries. The Japanese petroleum businesses, once protected, faced tough co...

BACKGROUND Colonial cinnabar mining and refining began in Huancavelica, Peru, in 1564. With a local source of mercury, the amalgamation process was adopted to refine silver in Potosí, Bolivia, in the early 1570s. As a result, large quantities of mercury were released into the environment. OBJECTIVES We used archival, primary, and secondary sources to develop the first estimate of mercury emis...

in this study,oil was extracted from the liver and visceral fat of patin (pangasianodon hypophthalmus) and refined. the yield of oil after refining was 49.98%. the major yield loss (34.20%) happened during the degumming procedure. fatty acids found in the crude and refined oil were c12:0, c14:0, c14:1, c16:0, c16:1, c18:0, c18:1, c18:2, c18:3, c18:4, c20:0, c20:1, c20:4, c20:5, and c22:6. the d...

in the present work, deoxidation and refining of 316lvm steel (low carbon vacuum melted) during the vacuum induction melting process was studied. this grade of stainless steel is one of the most important materials in medical applications. vacuum deoxidation by carbon is the first stage of 316lvm stainless steel production process. in this stage, aluminum must be absent to avoid killing the c-o...

in this article, the results of special effects of privatization of iranian gas refining industry with delphi-dematel integrative approach are presented. according to the results of this research in delphi technique base, all together, experts recognize 39 pivotal factors in privatization of the gas refining companies. then by the aids of dematel technique, in previous step, according to expert...