This paper reviews the data on blood nicotine or saliva cotinine concentrations with concomitant smoking and use of nicotine replacement (NR) products. Eleven studies that provided data on blood nicotine concentrations, carbon monoxide in exhaled air, and number of cigarettes smoked were reviewed. At least one day had to be spent on concurrent use of cigarette and NR products. With simultaneous...

in this study the performance and emissions characteristics of a heavy-duty, direct injection, compression ignition (ci) engine which is specialized in agriculture, have been investigated experimentally. for this aim, the influence of injection timing, load, engine speed on power, brake specific fuel consumption (bsfc), peak pressure (pp), nitrogen oxides (nox), carbon dioxide (co2), carbon mon...

Seasonal variation in carbon monoxide (CO) poisoning during 1969-78 was examined using the monthly hospital admissions and environmental weather data from Seoul, Korea. The results showed that there were nine times as many cases of CO poisoning in December as in August. CO poisoning cases were significantly correlated with temperature and domestic fires but not significantly with relative humid...

Wilson, A. J., and K. E. Schaefer. 1979. Effect of prolonged exposure to elevated carbon monoxide and carbon dioxide levels on red blood cell parameters during submarine patrols. Undersea Biomed. Res. Sub. SuppL: S49-S56.—Twenty volunteers were chosen at random from the crew of a Polaris submarine to ascertain the effect of prolonged exposure to elevated levels of carbon monoxide and carbon dio...

The current study aims at modelling the dispersion of two pollutants, namely CO (carbon monoxide) and SO2 (sulfur dioxide) released from District 7 of Tehran Municiaplity, from 20 main line sources, by means of CALPUFF modeling system. CALPUFF is a non-steady state puff modeling software which employs meteorological, terrain, and land-use data to effectively simulate air pollutants' dispersion ...

Square planar dialkyl complexes of nickel, palladium and platinum exhibit intriguing difference in their reactivities. Thermolysis pathways of these dialkyls vary depending on the metal, ligands, alkyl groups, geometry as well as the presence or absence of added ligand. Kinetic studies on the thermolysis and trans-cis isomerizations of PdR,L2 (L = tertiary phosphine) complexes showed involvemen...

The transfer factor of carbon monoxide (TLco) has been measured in 40 normal schoolchildren by the steady state method during treadmill exercise. The fractional uptake of CO diminished with increasing oxygen consumption and the nett CO uptake was linearly correlated with oxygen consumption. The TLco at two work levels was significantly correlated with height and increased moderately with increa...

Ni-Fe containing enzymes are involved in the biological utilization of carbon monoxide, carbon dioxide, and hydrogen. Interest in these enzymes has increased in recent years due to hydrogen fuel initiatives and concerns over development of new methods for CO2 sequestration. One Ni-Fe enzyme called carbon monoxide dehydrogenase (CODH) is a key player in the global carbon cycle and carries out th...

Background: Dichloromethane (a chlorinated hydrocarbon) is normally used as a solvent. Dichloromethane poisoning has been reported from occupational exposure and the common routes of dichloromethane poisoning are ingestion and inhalation. Case presentation: We described a case of 51-year-old man who received subcutaneous injection of dichloromethane and presented with local wound necrosis at hi...

Conversion of carbon monoxide (CO), a major one-carbon product of carbon dioxide (CO2) reduction, into value-added multicarbon species is a challenge to addressing global energy demands and climate change. Here we report a modular synthetic approach for aqueous electrochemical CO reduction to carbon-carbon coupled products via self-assembly of supramolecular cages at molecular-materials interfa...