The development of sensors that can detect hazardous analytes selectively and accurately, particularly sulfur based irritants, is quite essential. infinite-conjugation in cyclic conducting polymers make them highly sensitive to toxic analytes. We implemented B3LYP-D3/6–311 + G (d, p) level explore the sensing mechanism tetrapyrrole (CTPy) for reliable detection carbonyl sulfide, carbon disulfid...

Highly toxic sulfur-containing gases have been pathogenetically implicated in ulcerative colitis. Utilizing a rat model, we studied the production and elimination of sulfur-containing gases within the unperturbed colon. The major sulfur-containing gases were hydrogen sulfide (H2S), methanethiol, and dimethyl sulfide with cecal accumulation rates of 2.6, 0.096, and 0.046 μl/min, respectively. Th...

The article presents performance analysis of the neuro swarm optimization algorithm applied for the detection of proportion of the component gases found in manhole gas mixture. The hybrid neuro swarm optimization technique is used for implementing an intelligent sensory system for the detection of component gases present in manhole gas mixture. The manhole gas mixture typically contains toxic g...

Background: Hazardous chemical agents in the welding operation are a mixture of metal fumes and toxic gases, the inhalation of which causes adverse health effects among welders. The emission of gases in the workplace is a logical cause for concern regarding the potential development of respiratory disease. The aim of the present study was to determine the concentration values of gases discharge...

Introduction The possibilities of using liquid instead of air in the exchange of gases have always fascinated researchers. The first studied liquid was saline solution which appeared to be unsuitable for transporting gases in normobaria. Its capacity to dissolve oxygen is low, and its viscosity and density are high as compared with air. Moreover, the introduction of saline into the lung can rem...

Protection against dangerous emissions is important in every context where combustion occurs and where there is a risk of people coming in contact with exhaust gases. It is furthermore the intention that people will be present in certain surroundings, such as road tunnels, mines and garages, and therefore will also be inhaling the emitted exhaust gases – in this case coming from vehicles and ma...

Conventional Metal Oxide gas sensors commonly used for sensing inflammable hydrocarbon gases and other toxic gases suffer from the two limitations, viz. (a) their relatively high operating temperature (≥300° c) and (b) large power dissipation (≥1 Watt). In this paper we establish that use of nanocrystalline metal oxide in place of polycrystalline metal oxide lead to large increase of free surfa...

Agriculture is considered one of the most hazardous occupations. Organic dusts and toxic gases constitute some of the most common and potentially disabling occupational and environmental hazards. The changing patterns of agriculture have paradoxically contributed to both improved working conditions and increased exposure to respiratory hazards. Animal confinement operations with increasing anim...