occupational exposure to elemental mercury vapor usually occurs through inhalation during its utilizations. this leads to a variety of adverse health effects. in some islamic cities, this type of poisoning may occur during gilding of shrines using elemental mercury with gold. herein, we report on three male patients aged 20–53 years, who were diagnosed with occupational metallic mercury poisoni...

Today, the characterisation of the microstructure of cement-based materials using non-destructive techniques has become an important topic of study, and among them, the impedance spectroscopy has recently experienced great progress. In this research, mortars with two different contents of fly ash were exposed to four different constant temperature and relative humidity environments during a 180...

Darcy’s law has long been used to describe the flow in porous media. Despite progress that took place oil production industry research, it became clear there is a loss of pressure, especially area near wellbore region, where not applicable. For this reason, Forchheimer presented his equation 1910, he added new term dealing with pressure due inertial forces by introducing term, β coefficient, in...

Various experiments, including routine petrophysical measurements, thin section and scanning electronic microscope (SEM), high-pressure mercury intrusion (HPMI), nuclear magnetic resonance (NMR), were performed to characterize the microscopic pore structure of tight sandstone in Huagang Formation (E3h), Xihu Sag, East China Sea Basin, China. Specifically, NMR was used investigate dynamic variat...

Pore structure is the key element of tight sandstone reservoir, which restricts accumulation and flow oil gas in reservoir. At present, reservoir pore focus difficulty unconventional exploration development research. The Chang 4 + 5 member Upper Triassic Yanchang Formation main for G area. there little research on its fractal characteristics, to some extent affects progress development. This pa...

As the heterogeneity of pore systems, carbonate rocks commonly exhibit unpredictable porosity vs. permeability relationship and make exploitation prediction prolific reservoirs difficult. Most published studies on systems were conducted in sandstones shales, while rocks, especially dolostones have received little attention. In this study, we investigate porous dolostone reservoir Lower Triassic...

A process model was developed to simulate elemental mercury sorption by activated carbon in three distinct beds, namely a confined, a semi-fluidized, and a fluidized bed. The model involved the coupling of a kinetic model based on the mechanisms of surface equilibrium and external mass transfer, and a material balance model based on the tank-in-series approach. For surface equilibrium, three di...

The major reason for the prediction of thermodynamic properties of mercury lies in the fact that itsintermolecular interactions highly depend on temperature and density. Internal pressure is a good criterion toinvestigate the density dependence of the interatomic interactions. Because its physical base is a forcetending to close together the molecules that is intermolecular interactions, and as...

In healthcare institutions around this country and around the world, mercury sphygmomanometers are being removed.1 In many situations, the decision to replace the instruments is being made without significant input from involved clinicians or consideration of the health risks that will follow if they are replaced by less accurate devices. Blood pressure measurement is an important indicator of ...

BACKGROUND Few studies have examined the association between mercury exposure and obesity. The aim of this study is to investigate the association between blood mercury concentrations and indices of obesity in adults. METHODS A total of 200 healthy subjects, aged 30 to 64 years, who had no history of cardiovascular or malignant disease, were examined. Anthropometric and various biochemical pr...