Auplata est le premier producteur d'or français coté en Bourse. Basée en Guyane, l'entreprise possède 700 km2 de permis et titres miniers. Les géologues sont unanimes sur le potentiel ...
A detailed review on deep learning-based techniques for information extraction, with systematic introduction, hierarchical analysis, method comparison, and summary with expectations for future development. With the advent of global digital transformation, using an intelligent method based on deep learning to extract crucial …
Chapitre II. Régime d'autorisation d'exploitation minière semi-industrielle et artisanale Article 5 : Droits fixes Conformément à l'article 149 du Code minier le montant des droits liés aux demandes d'autorisation d'exploitation minière semi industrielle et artisanale est fixé comme suit : Exploitation semi-industrielle:
Gold recovery and refining. Companies need successful recovery methods that drive profits. Design teams with extensive experience in cyanide-in-leach (CIL), cyanide-in-pulp (CIP), carbon elution, carbon activation— in addition to newer thiosulfate leaching and regeneration processes—can enhance gold recovery and profitability.
La présente invention a pour objet un procédé d'extraction d'huile de palmier essentiellement caractérisé en ce qu'il comprend une étape d'extraction simultanée en une seule opération des huiles contenues dans la drupe du palmier à huile, pour obtenir un mélange des huiles de palme et de palmiste contenues dans le fruit. L'huile ainsi …
With the advent of global digital transformation, using an intelligent method based on deep learning to extract crucial information from semi-structured documents, as represented by various types of receipts and invoices, has emerged as an imperative measure to ensure business stability, data security, and improved work efficiency. This paper provides a …
1.1. De l'exploitation industrielle Le secteur minier au Katanga a traditionnellement été occupé par la Gécamines, une entreprise publique qui a pris la relève de l'Union Minière dans l'exploitation industrielle du minerai et a fait de la RDC le premier producteur mondial de cuivre et de cobalt entre les années 60 et 70.
However, in practice, evidence an-notations may only be available for a minority of training examples (if available at all). In this paper, we propose new methods to com-bine few evidence annotations (strong semi-supervision) with abundant document-level la-bels (weak supervision) for the task of evi-dence extraction.
In this paper, a semi-analytical extraction method is used to determine the parameters of small signal equivalent circuit model for PIN photodiodes. The method is based on the combination of the analytical and optimisation technology. The pad capacitance range can be obtained from the size of the bonding pad, the feedline inductance range can ...
Argan oil has been extracted using supercritical CO 2 . The influence of the variables pressure (100, 200, 300, and 400 bar) and temperature (35, 45, 55°C) was investigated. The best extraction yields were achieved at a temperature of 45°C and a pressure of 400 bar. The argan oil extracts were characterized in terms of acid, peroxide and iodine …
Stir bars have so far never been used for the extraction of volatile/semi-volatile bacterial compounds. The effectiveness of two stir bars with polydimethylsiloxane (PDMS) or ethylene glycol/silicone (EGS) as sorbent was tested by performing sample extraction directly in gas chromatography (GC) vials containing bacterial cultures.
Alkaloid-embonate complexes were obtained as precipitates by treating the extract with an alkaline (NaOH) solution of embonic acid (4,4-methylene-bis-3-hydroxynaphtalenecarboxylic acid). The precipitate mainly consisted of catharanthine and vindoline embonates and it was directly used as the starting material for a semi …