Surface chemistry of carotenoids. 1. Astacene*
نویسندگان
چکیده
منابع مشابه
Recent advances in the chemistry of natural carotenoids.
INTRODUCTION One may regard the first epoch in the structural studies of naturally occurring carotenoids as terminated with the authoritative monograph by Karrer and Jucker1 in 1948. In the classical period structural determinations of carotenoids, derived mainly from plant sources, were carried out by semi-micro methods by means of chemical degradation. Useful methods such as various types of ...
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The applications of molecular surface chemistry in heterogeneous catalyst technology, semiconductor-based technology, medical technology, anticorrosion and lubricant technology, and nanotechnology are highlighted in this perspective. The evolution of surface chemistry at the molecular level is reviewed, and the key roles of surface instrumentation developments for in situ studies of the gas-sol...
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PURPOSE To analyze the surface composition of 34 different commercially available titanium dental implants. MATERIALS AND METHODS Surface composition was evaluated by x-ray photoelectron spectroscopy (XPS). Samples were divided into 4 groups, depending on their surface topography (machined, sandblasted, acid etched, or plasma sprayed). RESULTS Statistical analysis of the data showed a clear...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1941
ISSN: 0306-3283
DOI: 10.1042/bj0351388