Results 211 to 220 of about 870,429 (258)
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2012
The chemical composition of stellar matter is obviously very important, since it directly influences such basic properties as absorption of radiation or generation of energy by nuclear reactions. These reactions in turn alter the chemical composition, which represents a long-lasting record of the nuclear history of the star.
Rudolf Kippenhahn +2 more
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The chemical composition of stellar matter is obviously very important, since it directly influences such basic properties as absorption of radiation or generation of energy by nuclear reactions. These reactions in turn alter the chemical composition, which represents a long-lasting record of the nuclear history of the star.
Rudolf Kippenhahn +2 more
openaire +1 more source
2012
Abstract This chapter focuses on the chemical composition of pepper fruits, i.e. water, fixed (fatty) oils, steam-volatile oil, carotenoids, resin, protein, fibre and minerals, among others. The importance of these compounds in the nutritive value, taste, colour and aroma of pepper fruits are also discussed.
P. W. Bosland, E. J. Votava
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Abstract This chapter focuses on the chemical composition of pepper fruits, i.e. water, fixed (fatty) oils, steam-volatile oil, carotenoids, resin, protein, fibre and minerals, among others. The importance of these compounds in the nutritive value, taste, colour and aroma of pepper fruits are also discussed.
P. W. Bosland, E. J. Votava
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2013
Abstract The overall chemical composition of metals and alloys is most commonly determined by x-ray fluorescence (XRF) and optical emission spectroscopy (OES). High-temperature combustion and inert gas fusion methods are typically used to analyze dissolved gases (oxygen, nitrogen, and hydrogen) and, in some cases, carbon and sulfur in ...
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Abstract The overall chemical composition of metals and alloys is most commonly determined by x-ray fluorescence (XRF) and optical emission spectroscopy (OES). High-temperature combustion and inert gas fusion methods are typically used to analyze dissolved gases (oxygen, nitrogen, and hydrogen) and, in some cases, carbon and sulfur in ...
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Chemical Composition of Seaweeds
2011Algae form a diverse group of organisms because of their morphotypes, cellular structure, and their proportion ranging from several centimeters to tens of meters. Due to their high nutritional value, seaweeds are traditionally used for various purposes such as food worldwide, and especially in Asian countries.
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Tracking Daily Concentrations of PM2.5 Chemical Composition in China since 2000
Environmental Science & Technology, 2022Qingyang Xiao, Guannan Geng
exaly