منابع مشابه
Chemistry in glow discharges of H2 / O2 mixtures. Diagnostics and modelling.
The chemistry of low pressure H2 + O2 discharges with different mixture ratios has been studied in a hollow cathode DC reactor. Neutral and positive ion distributions have been measured by mass spectrometry, and Langmuir probes have been used to provide charge densities and electron temperatures. A simple zero order kinetic model including neutral species and positive and negative ions, which t...
متن کاملChemistry in glow discharges of H2 / N2 mixtures. Diagnostics and modelling
A combined diagnostics and modelling of low pressure H2 /(10%)N2 plasmas generated in a hollow cathode (DC) reactor is present. Neutral and ion distributions are measured by mass spectrometry in the pressure range 0.8 − 8 Pa. Apart from N2 and H2, NH3 is observed in appreciable concentrations among the neutrals. Concerning the charged species, pure hydrogen and nitrogen ions are detected togeth...
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We introduce Glow Clustering, a clustering technique inspired by the physics of light and the images of spiral galaxies. We discuss the genesis, design, and implementation of Glow Clustering. We evaluate Glow Clustering on test datasets and a well-known standard dataset. Finally, we attempt to describe the characteristics of Glow Clustering, giving some insight into the context of use where Glo...
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In single-bubble sonoluminescence, an ultrasound-driven microbubble undergoes violent oscillations and converts part of the energy of the sound field into visible light. Since its discovery ten years ago, a consistent theory of the dynamics and stability of the bubble has been developed. The approach includes the dissociation of molecular gases inside the collapsing bubble to explain striking d...
متن کاملThe Healthy Glow of Carrots
We have probably all heard that carrots are good for our health, particularly for our eye health. This is primarily due to the very high levels of vitamin A and its natural precursor, beta-carotene, in carrots. In fact, a single cup of carrots has been reported to provide over 650% of our daily needs for vitamin A, which is simply amazing. In addition to being rich in vitamin A, carrots are a v...
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ژورنال
عنوان ژورنال: Science
سال: 2004
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.305.5684.575d