Carbon dioxide concentration in air within the Nerja Cave (Malaga, Andalusia, Spain)

Study of Dioxide Carbon Concentration and Indoor Air Quality in Some Buildings in the Equatorial Region of Cameroon (Yaounde)

Background and purpose: Elevated CO2 rate in a building affect the health of occupant. This document presents results of an experimental analysis conducted in 50 offices located in 12 buildings with different layer in Cameroon (Yaounde). This study took place in 2012, during the dry and the rainy seasons. The main goal is to show the influence of the building structure, the ventilation and the ...

A record of Pleistocene climate from a stalactite, Nerja Cave, southern Spain

A study of stable isotopes (N18O, N13C) of a uranium-series dated aragonitic stalactite from Nerja Cave (Ma¤laga, southern Spain) was carried out in order to determine the conditions of deposition in isotopic equilibrium and nonequilibrium. We obtained a record of climate change from 190 000 to 160 000 years ago. A series of carbon (N13C) and oxygen (N18O) isotopes analyses have been carried ou...

Capturing Carbon Dioxide From Air

The goal of carbon sequestration is to take CO2 that would otherwise accumulate in the atmosphere and put it in safe and permanent storage. Most proposed methods would capture CO2 from concentrated sources like power plants. Indeed, on-site capture is the most sensible approach for large sources and initially offers the most cost-effective avenue to sequestration. For distributed, mobile source...

Carbon dioxide concentration in various anaesthetic techniques.

FOLLOWING the observation of Harrison and Jones (1955) on the concentration of carbon dioxide in gas samples taken from two points on a Boyle's machine during the administration of anaesthesia by a semiclosed method, it was thought that it might be enlightening to extend the investigation to other techniques and machines. For this purpose, use was made of the recently available Carbon Dioxide A...

A carbon-dioxide-in-air incubator.