several methods have been developed for gold exploration in the past, among which biological base method is known to be the most efficient with least expenses. this method can also be used for latent gold prospects exploration. in the present study, the possibility of applying bacillus cereus frequency in soil as a biological marker was investigated for the exploration of latent gold prospectin...

The main standard method for gold karat determination is the cupellation method. However, this method is not sufficiently accurate to determine gold karat in the presence of insoluble Platinum–Group Metals (PGMs), such as Ir, Ru, and Rh. In this study, for the first time, a complementary method that can be used coupled with the reference cupellation method is presented for the high...

Two case studies (Kumtor in the Kyrgyz Republic and Pascua-Lama in Chile–Argentina) are analysed, illustrating how gold mining interferes with glaciers and how this may be affected by changing perceptions on global warming. Although global warming presents new opportunities for the mining industry, increasing the physical accessibility of resources previously covered with glaciers, it may also ...

The potential of breeding Zantedeschia cultivars for resistance to soft rot caused by Erwinia carotovora subsp. carotovora (syn. Pectobacterium carotovorum subsp. carotovorum) was determined. Hybrids of six cultivars (‘Back Magic’, Galaxy’, Pink Persuasion’, Sensation’, ‘Treasure’ and ‘Florex Gold’) were screened using a non-destructive resistance test (leaf disk test) and scored different leve...

Measuring plant chlorophyll concentration is a well-known and commonly used method in agriculture and environmental applications for monitoring plant health, which also correlates with many other plant parameters including, e.g., carotenoids, nitrogen, maximum green fluorescence, etc. Direct chlorophyll measurement using chemical extraction is destructive, complex and time-consuming, which has ...

the aim of this study is experimental assay of sensitivity and stability of a bimetallic silver/gold spr sensor chip. this chip utilizes the sensitivity of the silver and the stability of the gold. moreover, the silver layer (instead of usual cr or ti layer) was used as an adhesive intermediate layer between the gold layer and the glass substrate. the optimization of the gold/silver thickness u...

Recovery of gold and other valuable metals from electronic scrap involves a complex metallurgical flow sheet and requires state-of-the-art recovery technologies that are available in large-scale, integrated smelter and refinery operations. At the end of their use, electronic and other electrical product scrap offer an important recycling potential for the secondary supply of gold and silver...

Phytotechnologies are rapidly replacing conventional ex-situ remediation techniques as they have the added benefit of restoring aesthetic value, important in the reclamation of mine sites. Alders are pioneer species that can tolerate and proliferate in nutrient-poor, contaminated environments, largely due to symbiotic root associations with the N2-fixing bacteria, Frankia and ectomycorrhizal (E...