The present study, which focuses on the behavior of gold and its accompanying chemical elements developed an alteration profile, is carried out in a humid equatorial zone at Mintom South Cameroon (Central Africa). methodology used to achieve results obtained focused description morphology outcrop, petrography rock studied, study heavy minerals weathering materials smear slides, mineralogical an...

Dust deposition is an important source of phosphorus (P) to many ecosystems. However, there little evidence dust-derived P-containing minerals in soils. Here we studied P forms along a well-described climatic gradient on Hawaii, which also dust gradient. Soil mineralogy and soil from six sites the were analyzed with bulk (X-ray diffraction K-edge X-ray absorption near edge structure) microscale...

in this research, the effect of micro turbulence on the flotation rate of quartz particles was investigated. the maximum particle reynolds number (rep) was obtained at 60.25 with a particle size of -500+420 µm, impeller speed of 900 rpm, bubble surface area flux of 10.21 1/s and micro scale turbulence size of 162 µm. when the micro turbulence size was equal to the particle size, the maximum flo...

The Negri body is characteristic of the street rabies virus infection. Although there have been a number of studies on the problem of whether the Negri body consists of a reactive product of the cell brought about by the rabies virus multiplication or contains virus particles, the final answer is still lacking. Recently, several papers concerning the morphology of the rabies virus have revealed

Pseudo–simultaneous measurements for vertical variation of coarse, fine and ultra fine particles in an urban street canyon. Atmospheric Environment 42, 4304–4319. Abstract 1 The vertical variation of particle number distributions and concentrations in a street 2 canyon is the result of the competing influences of meteorology, traffic and transformation 3 processes overall and for various partic...

Abstract The present work aims to investigate the link between oxidation and reduction of a weathered ilmenite concentrate in terms phase transitions, microstructural changes, element distribution. An sample was pelletized fired at 1000 °C air, as result, pellets were oxidized. oxidized reduced by hydrogen gas °C, which yielded almost complete metallization iron content pellets. ore characteriz...

Surface finishing is one of the most significant steps in industries which are engaged with surface quality. Finishing by magnetic field is a new method of surface finishing. In this process, machining is executed in mechanical way and semi-homogeneous abrasive slurry performs finishing of surfaces. Needed force to grind surfaces is made by magnetic field. Therefor this method is considered as ...

Reliable traffic information is essential for the development of efficient traffic control and management strategies for traffic networks in advanced traffic management systems (ATMS) and advanced traveler information systems (ATIS). Real-time traffic information is utilized for various purposes such as dynamic route guidance, incident detection, and control of variable message signs. Traffic i...

The Deepwater Horizon oil spill in 2010 overlapped with the spawning of many pelagic fish species in the Gulf of Mexico, including mahi-mahi (Coryphaena hippurus). Polycyclic aromatic hydrocarbons (PAHs) released during the spill have been shown to cause photo-induced toxicity under ultraviolet (UV) radiation. In the present study, mahi-mahi embryos were exposed to high-energy water accommodate...