<p>Groundwater is a vital source of irrigation and domestic purposes in Bangladesh, hence, it must satisfy the water quality guidelines. The study has selected eleven (11) Districts Bangladesh collect secondary data regarding groundwater. Several indices, such as soluble sodium percentage (SSP), adsorption ratio (SAR), magnesium (MAR), residual carbonate (RSC), Kelly’s (KR), permeability ...

There has been increasing public concern about the adverse health effects of human exposure to electromagnetic waves. In the radiofrequency and microwave (MW) ranges, elevated temperature (1-2 C) resulting from energy absorption is known to be a dominant factor inducing adverse health effects such as heat exhaustion and heat stroke. Whole-body average specific absorption rate (SAR) is used as a...

Using a constant perfusion technique, sodium and bicarbonate absorption was studied in human subjects. The following observations were made on sodium absorption from saline solution: (a) the rate of sodium absorption is markedly influenced by bulk water flow, (b) when net water flow is zero, sodium absorption is zero if there are no concentration gradients between plasma and lumen that favor ne...

The management of local and global power deposition in human subjects (specific absorption rate, SAR) is a fundamental constraint to the application of parallel transmission (pTx) systems. Even though the pTx and single channel have to meet the same SAR requirements, the complex behavior of the spatial distribution of local SAR for transmission arrays poses problems that are not encountered in ...

in this study, hydroxyapatite (ha) nanocrystals have been synthesized via chemical precipitation technique. diammonium hydrogen phosphate and calcium nitrate 4-hydrate were used as starting materials and sodium hydroxide solution was used as the agent for ph adjustment. the powder sample was evaluated by techniques such as scanning electron microscope, transmission electron microscope, fourier ...

Agricultural reclamation in coastal zones is effective for mitigating population pressure on the food supply. Soil properties are important factors influencing crop production reclaimed lands. This study aims to investigate impacts of time and land use trajectories soil physicochemical after reclamation. We sampled soils areas that were 1999, 1998, 1991, 1989, 1986, 1981, 1979 determined some s...

Preliminary communication The aim of this investigation is to analyse the effects of hand on electromagnetic (EM) absorption and antenna performances. The EM absorption is evaluated by using the specific absorption rate (SAR) in the human head and total absorbed power by the user in this paper. The antenna performance’s parameters comprising radiation efficiency, total efficiency, gain and band...