Deemed the worlds largest environmental health issue, air pollution has been shown to be a more potent danger than previously thought. Increasing concern regarding major gas pollutants nitrogen dioxide (NO2), ammonia (NH3), and ozone (O3) has sparked research in the field of gas adsorption as a method to remove these gases from the atmosphere. Using first principles calculations based on the De...

Bronchiolitis fibrosa obliterans, described first by Lange in 1901, is an obliterative process of the bronchioles in which there is extensive damage to the bronchial wall involving all the constituent elements (the epithelium, elastic tissue, and muscle fibres), and the lumen is partially or totally occluded by bronchial exudate organized by fibroblasts and capillaries. The disease is extremely...

In coal mine different types of toxic gases are present. There is an increasing demand on toxic gas sensor for coal mine where the power consumption is a big issue. In this paper a simple structure of micro heater and inter digited electrode has been fabricated and micro machined structure for low power consumption is demonstrated. MEMS microheaters are designed and fabricated for entire two in...

By THE KERNEL HISTORY records numerous abortive attempts to utilize chemical substances as war weapons, but it is not within the scope of this article to go into such occurrences prior to the Great War, except to mention that with the exception of "Greek Fire," none of them produced important results nor challenged the supremacy of existing weapons. The first toxic gases used in the Great War w...

The effects of sorption processes on dynamic ETS organic gas concentrations and potential exposures were studied in a carpeted and furnished 50-m room ventilated at 0.6 h. Ten cigarettes were machine-smoked on six of every seven days over four weeks. Concentrations of ETS-specific tracers and regulated toxic compounds were quantified during daily smoking, post-smoking and background periods. Po...

Many research works are going on to save or protect the environment from different hazardous or toxic gases, chemicals and other harmful effects. Different construction materials (both renewable & non-renewable) are used while constructing any structure, road, railway, tunnel, etc. But every Engineer must know the concept of sustainable development and the particular application of construction...

Received Jan 9, 2018 Revised Mar 2, 2018 Accepted Mar 18, 2018 Because of rising dependency on fossil fuels, and rising amounts of toxic gases in the environment, it found that people are in need of a way to ensure the safety specifically those that live in cities. An approach is suggested in this paper, that is economical yet affords good detection, and can give accurate readings that can be a...