Relation extraction is the task of extracting semantic relations between entities in a sentence. It an essential part some natural language processing tasks such as information extraction, knowledge question answering, and base population. The main motivations this research stem from lack dataset for relation Persian well necessity growing big data different applications. In paper, we present “...

We introduce a distantly supervised event extraction approach that extracts complex event templates from microblogs. We show that this near real-time data source is more challenging than news because it contains information that is both approximate (e.g., with values that are close but different from the gold truth) and ambiguous (due to the brevity of the texts), impacting both the evaluation ...

The current paper introduces for the very first time recently invented electrodeposition-redox replacement (EDRR) method in continuous leaching-recovery-solution purification process. mini-pilot study reveals that longer duration of EDRR process is beneficial as it increases gold recovery per stage and decreases specific energy consumption EDRR. This extraordinary behavior postulated to be inhe...

 Cyanidation is a relatively simple and cheap technology to treat gold-containing ores. However, this process is not completely effective in refractory gold-bearing sulfide ores. In the case of very low-grade ores, biooxidation is an attractive alternative pre-treatment to render the gold amenable to extraction. This process utilizes the ability of acidophilic bacteria to oxidize the sulfide m...

Since early 2001, Kalgoorlie Consolidated Gold Mines (KCGM) has successfully operated an ultra fine grinding (UFG) circuit to supplement its roaster capacity for the treatment of the refractory gold flotation concentrate. A second UFG mill was installed in 2002 taking the total UFG capacity to over 20tph while grinding to 11-12 microns and achieving over 90% gold recovery. A development program...

Drawing on recent experimental and commercial developments, this review reappraises potential substitute leach reagents for cyanide in the gold mining sector. In addition to extraction, application of these processing, pre-treatment purification stages is explored. The main objective here discuss how extraction process can be more sustainable, with a view developing greener leaching reagents.