Ozokerite, a natural mixture of long-chain paraffins, is found at Ein-Humar (Jordan) on the eastern escarpment of the Dead Sea. The Ein-Humar ozokerite is mainly composed of saturated n-paraffins from C30 to presumably well into the C50′s with a maximum at C38. IR, NMR and chromatographic data ...

Raman spectra were obtained from the natural crystalline (evenkite) and amorphous (ozokerite and hatchetin) hydrocarbons, originating from volcanic and sedimentary rocks from several sites (Merník, Evenki, Zastávka). Raman spectra of all materials investigated confirm their exclusively aliphat...

Combined chronic toxicity and carcinogenicity studies of ozokerite (OZK), a natural wax substance used as a food additive for a gum base, were performed in male and female F344 rats. Dietary concentrations of 0%, 0.05%, 0.1% and 0.2% OZK were applied in a 52-week chronic toxicity study and 0%, 0...

The aim of the study was to analyse the microbiological and biochemical activity of a reclaimed landfill produced during extraction and processing ozokerite and sown with Trifolium hybridum and Dactylis glomerata. The analyses were carried out in the third year after application of two doses of ...

The most important source of yellow gem elbaite is the Canary mining area in the Lundazi District of eastern Zambia. The tourmaline has been mined since 1983 from both pegmatite and eluvial/alluvial deposits, in colors typically ranging from yellow-green to yellow to orange and brown; much of th...

The first experimental data on the heat capacities, enthalpies of formation from the oxides and elements of a natural elbaite: (Na0.48Ca0.44K0.02)(Li1.45Mn0.05Fe0.033+Mg0.09)Al7.01Si6.00B3.05(OH)2.57F0.44O27.18 (Malkhan pegmatite field, east Siberia, Russia) have been obtained. The heat capaciti...

The aim of the present research was to determine whether the recently identified and characterized new fibrous amphibole fluoro-edenite may induce a cytopathic response in cultured cells. The final goal was to gain suggestions on the potentiality of fluoro-edenite to be harmful to human beings. ...

An unusual cluster of malignant mesothelioma was evidenced in Biancavilla, a Sicily village where no inhabitant had been significantly and professionally exposed to asbestos. Mineralogical and environmental studies led to the identification of a new prismatic amphibole, named fluoro-edenite. We ...

An epidemiological survey on mortality for malignant pleural neoplasm in Italy evidenced a number of patients in Biancavilla, a village located in a volcanic area of eastern Sicily, none of which had been significantly exposed to asbestos during their professional lives. Enviromental studies sug...

Angiogenesis plays a crucial role in progression of pleural malignant mesothelioma. A significantly increased incidence of pleural mesothelioma has been attributed to exposure to fluoro-edenite, a fibrous amphibole extracted from a local stone quarry. In this study, we have investigated the expr...

A significantly increased incidence of pleural mesothelioma in Biancavilla (Sicily, Italy) has been attributed to exposure to fluoro-edenite (FE), a fibrous amphibole extracted from a local stone quarry.The lymph-nodes draining the pulmonary lobes of sheep grazing around the town were examined, ...

Separation of some active metal ions such as Ce3+, Eu3+, and La3+ from molten fluoride salt using electrochemical process is difficult. The currently available electrodeposition process assisted by the solid reactive electrode or liquid metal electrode faces challenges such as the isolation of t...

Concerning to the profuse applications in the field of magnetic materials, group IV elements have received a significant attention owing to its chemical stability and high electrical resistivity. In this investigation, appropriation of rare earth (Lanthanum) has been substituted in NiFe2O4 and C...

A series of hydrotalcite-derived mixed oxides containing Ni/Mg/La/Al and obtained by thermal decomposition, were characterized by XRD, H2-TPR, CO2-TPD, elemental analysis and low temperature nitrogen sorption techniques. The results confirm the formation of periclase-like structured materials. T...

The novel lanthanum-doped nickel hydroxidenitrate (LaNiHN) nanoflowers are prepared by a facile one-step solvothermal growth method. The doping of La ions into the lattice of the NiHN nanoflowers can effectively increase the electrical conductivity, lattice volume and c-axis spacing of NiHN nano...

Sodium niobate (NaNbO3) particles with perovskite structure and plate-like morphology were successfully prepared through calcining the plate-like hexagonal NaNbO3 particles that were synthesized by hydrothermal method. A single phase of hexagonal NaNbO3 was obtained under the condition of 200 °...

This paper provides an efficient alternative way to conserve natural clays and to reduce both fired bricks costs production and wastes amounts generation. It aims to substitute natural clay by treated calamine processing wastes (TCPMT) to manufacture value added fired bricks. Different mixes con...

Near-infrared (NIR) spectroscopy has been widely used in the analysis fields of traditional Chinese medicine. It has the advantages of fast analysis, no damage to samples and no pollution. In this research, a fast quantitative model for zinc oxide (ZnO) content in mineral medicine calamine was e...

Because of the physical, chemical and environmental risks related to industrial wastes and the high consumption of finite natural resources in the construction industry, this paper presents an ecological and sustainable way to manufacture ceramic products using calamine hydrometallurgical proces...

Terahertz time-domain spectroscopy (THz-TDS) is an attractive technique that is capable of non-destructive penetrating and probing pharmaceutical tablets conveniently. It can provide sufficient optical information of crystalline and polymorphic pharmaceuticals with high signal-to-noise ratio (SN...