the purpose of this study was to find a relatively inexpensive method for removal of arsenate and arsenite from drinking water. the capability of iranian natural clinoptilolites, relevant synthetic zeolites a and p and iron(п) modified of them was investigated for the uptake of arsenic anions from drinking water. data obtained from ion-exchange using batch (static) technique showed that among t...

The counting of bacteria in water has been a critical element in protecting public health in the last century. In the early part of the century scientists were able to grow many species of bacteria and differentiate them from each other using biochemical tests. They also had observed that certain bacteria were always found in the faeces of humans and other warm-blooded animals and that signific...

Disruption of the balance between proteases and protease inhibitors is often associated with pathologic tissue destruction. To explore the therapeutic potential of secretory leukocyte protease inhibitor (SLPI) in erosive joint diseases, we cloned, sequenced, and expressed active rat SLPI, which shares the protease-reactive site found in human SLPI. In a rat streptococcal cell wall (SCW)-induced...

In recent decades, ultraviolet-assisted advanced oxidation processes (UV-AOPs) have been successfully applied to remove a wide range of contaminants from polluted water. Despite this, their extended use on an industrial scale is still far being reality, largely limited by the operational costs that these entail. years, many researchers working increase UV-AOP efficiency and reduce capital opera...

Background: Water resource management is a strategic issue in Qom city. Water scarcity is one of the most critical concerns of industrial estates. This study aimed to evaluate wastewater management in the Shokuhieh industrial park of Qom province in 2013. Methods: This is a descriptive cross-sectional study done by visiting the industrial units in person, completing questionnaires and analyzin...

EJectron density distriiutions, derived from ap initio molecular wavefunttions, have been calculated for CNand SCNions. From these dynamic densities were calculated assuming-rigid body thermal. vibrations of the molecules. Comparison with the difference density in NaCN + 2&O, NaSCN and N&SCW, observed by X-ray diffraction, is fair. Remaining differences between theory and experiment are discuss...

background: water resource management is a strategic issue in qom city. water scarcity is one of the most critical concerns of industrial estates. this study aimed to evaluate wastewater management in the shokuhieh industrial park of qom province in 2013. methods: this is a descriptive cross-sectional study done by visiting the industrial units in person, completing questionnaires and analyzing...

Cyber attacks are an emerging threat to critical infrastructure systems worldwide. We focus on water, recognizing that water is vital for human health and to the function of other critical infrastructures. A cyber attack targets control and monitoring systems of a water utility, known as supervisory control and data acquisition (SCADA) systems, and disrupts water operations. Current research is...