The methods used to dissect tissue and stem blood flow during surgery have changed as technology has developed. Lasers and electro-surgery have become commonplace, so that medical staff in the operating theatre are (potentially) increasingly exposed to the thermal decomposition products of tissues. Variations in ventilation systems and the presence or absence of local exhaust ventilation are li...

Tobacco smoke contains many toxic, carcinogenic and mutagenic chemicals, as well as stable and unstable free radicals and reactive oxygen species (ROS) in the particulate and the gas phase with the potential for biological oxidative damage. Epidemiological evidence established that smoking is one of the most important extrinsic factor of premature morbidity and mortality. The objective of this ...

Existing diesel engines are under stringent emission regulation particularly of smoke and particulate matter in their exhaust. Compressed Natural Gas and Diesel dual fuel operation is regarded as one of the best ways to control emissions from diesel engines and simultaneously saving petroleum based diesel fuel. Dual fuel engine is a conventional diesel engine which burn either gaseous fuel or d...

A number of studies currently focus on the renewable fuels to reduce the reliance on petroleum fuels. Biofuels such as biodiesel and bioethanol have been studied and tested in many countries including India. One of the methods to reduce the use of fossil fuel is blending ethanol with fossil diesel. However, an emulsifier or a co-solvent is needed to homogenize the diesel-ethanol blends. The ric...

The lack of scientific evidence on the constituents, properties, and health effects of second-hand waterpipe smoke has fueled controversy over whether public smoking bans should include the waterpipe. The purpose of this study was to investigate and compare emissions of ultrafine particles (UFP, <100 nm), carcinogenic polyaromatic hydrocarbons (PAH), volatile aldehydes, and carbon monoxide (CO)...

introduction: as far as application of chemicals as disinfectants may have side effects on human health and causes drug resistance, the topic of herbal and natural products has been investigated in recent researches. nevertheless, application of medicinal smokes in the treatment of many diseases, including bacterial and infectious diseases has long been popular in iran. smoke from the burning o...

Based on different fuel injection strategies, this paper analyzes the factors such as engine original emission smoke, exhaust temperature, soot content, wear spot diameter and kinematic viscosity. The study found that delaying timing, increased afterburn, emissions, gas temperature increase, but will increase thermal load of parts. At same time, growth rate lubricant viscosity increased; at con...

Scrubbers are widely used for air pollution treatment in semiconductor. Efficiency of waste gas must be carefully maintained environmental and health issue. However, due to the complex types exhaust system needs using chemicals with different characteristics at same time semiconductor process, many conditions will occur operation scrubber tower processing efficiency reduced. This paper aims com...

Inhalation and exhaust fans are installed inside a distribution panel for cooling. However, in the event of fire panel, these change flow smoke, which interferes with quick detection by sensors on ceiling, thereby increasing damage. The purpose this study is to develop smoke detector that can be panels propose an optimal position based influence performance. To end, experimental was fabricated ...