The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper researched ethanol combustion under different oxygen concentration. Experiments show that, at 20.95% and 20% oxygen concentration, ethanol boiling in the combustion and cause the rapid increase of the flame height, similar with the combustion of alcohol burner. With the decreasing of oxygen concentration, the continuous burning time of ethanol increases. The minimum oxygen concentration...
This article is main to confirm the hotel fire development process and to analyze the main cause of death. Based on the hotel fire investigation results, a FDS simulation model was used to analyze the temperature field, CO concentration and volume fraction of O2 about 1.5m above each death point. Then, the time that each factor reaches a critical condition such as limiting temperature of human body,...
This paper introduced a new kind of ultra-fine water mist extinguisher, and study on total flooding extinguishing test of ultra-fine water mist extinguishing combustion of paper in confined space with the size of 2.4m×2.4m×3.5m. The results showed that the ultra-fine water mist extinguisher with the mist flux of 500ml/min was effectively in extinguishing combustion of paper in confined space. Therefore,...
The nano-silica was employed to prepare HIPS/silica nanocomposites through melt blending method. The microstructure of HIPS/silica nanocomposites was observed by transmission electron microscopy technique. The flammability of the nanocomposites was evaluated by the cone calorimeter. Digital camera and scanning electron microscopy were used to examine the macro-structure, submicro-structure and micro-structure...
This paper researched the limiting oxygen index of several typical flammable liquids, include ethanol, heptane and 97# gasoline, and also conducted serials ultra-fine water mist extinguish tests on these liquid fires in confined space. Experiments showed that, the limiting oxygen index of ethanol is 14.0%, and the value is 14.5% for heptane, and the value is 15.0% for 97# gasoline. Extinguish tests...
Environmental sound recognition is an important function of robots and intelligent computer systems. In this research, we tried to use a multi-stage perceptron type neural network system for environmental sound recognition. The input data is the one-dimensional combination of instantaneous spectrum at power peak and the power pattern in time domain. Since for almost environmental sounds, their spectrum...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.