منابع مشابه
Ultrafast Photoinduced Dynamics at Air/Liquid and Liquid/Liquid Interfaces.
Although liquid/liquid and air/liquid interfaces are omnipresent, very little is known up to now about the dynamics of processes occurring at such interfaces. As a detailed understanding of these processes could be of invaluable technological, environmental, and medical importance, considerable effort has been invested over the last two decades in developing new interface-selective techniques t...
متن کاملQuantification of the Air Blast Characteristics of Commercial Explosives
The pressure-time profiles produced by initiation in free-air of four commercial sector explosives covering a range of velocities of detonation are reported. The results indicate that there are no significant differences in the blast wave shapes from the explosives when measured between 5 and 20 m from the initiation point. The dependence of peak overpressure and positive phase impulse on scale...
متن کاملDevelopment of the colorimetric sensor array for detection of explosives and volatile organic compounds in air
In the framework of the research project ‘Xsense’ at the Technical University of Denmark (DTU) we are developing a simple colorimetric sensor array which can be useful in detection of explosives like DNT and TNT, and identification of volatile organic compounds in the presence of water vapor in air. The technology is based on an array of chemo-responsive dyes immobilized on a solid support. Upo...
متن کاملTrace analysis of explosives in soil: pressurized fluid extraction and gas and liquid chromatography-mass spectrometry.
Soil samples are collected from the former Open Burn/Open Detonation Unit, Makua Military Reservation, on the island of Oahu, Hawaii. The soil is the Helemano series. The soil samples are fortified with eight explosives for development of the analytical method. These analytes are 2-amino-4,6-dinitrotoluene; 1,3-dinitrobenzene; 2,4-dinitrotoluene (DNT); hexahydro-1,3,5-trinitro-1,3,5-triazine (R...
متن کاملSurface freezing of chain molecules at the liquid-liquid and liquid-air interfaces.
Surface freezing (SF) is the formation of a crystalline monolayer at the free surface of a melt at a temperature Ts, a few degrees above the bulk freezing temperature, Tb. This effect, i.e. Ts > Tb, common to many chain molecules, is in a marked contrast with the surface melting effect, i.e. Ts < or = Tb, shown by almost all other materials. Depending on chain length, n, the SF layer shows a va...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1899
ISSN: 0036-8733
DOI: 10.1038/scientificamerican06031899-19597asupp