According to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. The low value residual gold ions existed in acid leaching tail solution in Mouteh gold mine in Iran with fellow heavy metals as pollutants (Fe2+, Cu2+, and Zn2+). Preparation of nano gold particles is achieved by two steps: First, by addition of ammonia as separatio...

According to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. The low value residual gold ions existed in acid leaching tail solution in Mouteh gold mine in Iran with fellow heavy metals as pollutants (Fe2+, Cu2+, and Zn2+). Preparation of nano gold particles is achieved by two steps: First, by addition of ammonia as separatio...

objective(s):   gold nanoparticles (gnps) command a great deal of attention for biomedical applications nowadays. the data about the degree of toxicity and the accumulation of gold nanoparticles in-vivo is not enough to judge.  materials and methods:  a total of 32 healthy male wistar rats were randomly divided into 4 including: three gnp-treated and one control group. groups 1, 2 and 3 receive...

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 int...

according to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. the low value residual gold ions existed in acid leaching tail solution in mouteh gold mine in iran with fellow heavy metals as pollutants (fe2+, cu2+, and zn2+). preparation of nano gold particles is achieved by two steps: first, by addition of ammonia as separatio...

the aim of the study is to determine the major source and extent of metal pollution in the vicinity of dashkasan gold mine. dashkasan mine has resulted in extensive contamination of soils by arsenic (as) and potentially toxic ore-related elements including mercury (hg), antimony (sb) and cadmium (cd). soils samples were collected and analyzed for as, cd, hg, pb and sb. the concentration of each...

objective(s): abdominal adhesions are one of the most important problems, occurring after intra-abdominal surgery in more than 90% of cases. this condition is the leading cause of bowel obstruction, infertility, and abdominal/pelvic pain. gold nanoparticles (gnps) have been shown to be non-toxic and exhibit anti-inflammatory, anti-angiogenic and antioxidant activities. the purpose of this study...

background: radiation-sensitive polymer gels are among the most promising three-dimensional dose verification tools and tissue-like developed to date. among the special features of this type of dosimeters, is be doped with other elements or chemicals which made them appropriate for investigating of dose enhancement with contrast agents, by high atomic number. material and methods: in this study...

background: the study was aimed to explore the association between arterial oxygen saturation (spo2) and spirometer parameters of disease severity in copd patients with a view to identify whether the pulse oximetry can be used as an alternative to arterial values in the clinical management of copd patients in a routine practice. materials and methods: thirty-one patients with copd were included...