it has been known for years that microbial surface active agents have a wide range of applications not only in oil spill environment but also in many industries. their properties including: (i) changing surface active phenomena, such as lowering of surface and interfacial tensions, (ii) wetting and penetrating actions, (iii) spreading, (iv) hydrophylicity and hydrophobicity actions, (v) microbi...

currently much debate, attention and concern surrounds the use of genetically modified plants or animals. but there has not been much concern about microorganisms, although we all are aware of the place of microorganisms in the circle of life, their abundance and diversity. there are many examples regarding the application of genetically engineered microorganisms (gems), however, like other hig...

abstract background: the functions and use of mouthwashes are variable depending on their type. oral care in patients with endotracheal tubes is important to prevent side effects such as pneumonia. the aim of this study was to determine the antimicrobial effects of chlorhexidine, drop of matrica mouthwash (chamomile extract), and normal saline on hospitalized patients with endotracheal tube in ...

Currently much debate, attention and concern surrounds the use of genetically modified plants or animals. But there has not been much concern about microorganisms, although we all are aware of the place of microorganisms in the circle of life, their abundance and diversity. There are many examples regarding the application of genetically engineered microorganisms (GEMs), however, like other hig...

Crude oil is one of the most important energetic resources in the world. It is used as raw material in numerous industries, including the refinery-petrochemical industry, where crude oil is refined through various technological processes into consumer products such as gasoline, oils, paraffin oils, lubricants, asphalt, domestic fuel oil, vaseline, and polymers. Oil-derived products are also com...