The Impact of Sepiolite on Sensor Parameters during the Detection of Low Concentrations of Alcohols.

The article presents the results of the detection of low-concentration C1-C4 alcohols using a planar sensor, in which a sepiolite filter was applied next to the gas-sensitive layer based on tin dioxide. The sepiolite layer is composed of tubes that have a length of several microns, and the diameter of the single tube ranges from several to tens of nanometers. The sepiolite layer itself demonstrated no chemical activity in the presence of volatile organic compounds (VOC), and the passive filter made of this material did not modify the chemical composition of the gaseous atmosphere diffusing to the gas-sensitive layer.

Influence of stabilising agents and pH on the size of SnO2 nanoparticles.

According to recent research, the use of nanoparticles as a gas-sensitive material increases the selectivity and sensitivity and shortens the response time of a sensor. However, the synthesis of SnO2 nanoparticles presents many difficulties. The following article presents a simple and inexpensive method for the synthesis of SnO2 nanoparticles.

Analysis of SnO2|WO3 heterocontact properties during the detection of hydrogen sulphide.

The main objective of the paper was the analysis of the properties of SnO2|WO3 heterocontact as well as the determination of its response to 50 ppm of hydrogen sulphide. It was noticed that the sensitivity of the sensor being tested to hydrogen sulphide depended significantly on the polarization direction. When its parameters were compared with those of sensors the gas-sensitive layer of which was made only from one type of metal oxide, a high impact of the heterocontact on the electric charge transport was noticed.

Causes of death of foreign tourists in the county of Istria during the summer holiday season from 2000 to 2004.

Unlabelled: In this paper, the causes of death are presented of 322 foreign tourists that occured during summer holidays in County of Istria, Croatia, in the period from May to September, during 5 years (from 2000 to 2004). The aim of this study was to evaluate the frequency of the common causes of these deaths. Data about these cases were taken out of the archives of the Institute of Public Health of County of Istria in Pula.