Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Chromium trioxide"”.
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Oxidation of Ring-A Aromatic Steroids
… of ring-A aromatic steroids using either chromium trioxide-aqueous sulphuric acid-acetone or chromium trioxide-aqueous acetic acid mixtures. It was found that chromic acid oxidation of ring-A aromatic steroids substituted with a strong electron-donating group, gives rise to products with …
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Concentration of ozone in surface air over greater Boston
… using a Mast microcoulombmetric sensor. A chromium trioxide filter was fitted to the air inlet of the sensor in order to remove negatively interfering sulphur dioxide. Daily ozone concentrations near the surface varied from somewhat greater than 10 to less than 1 pphm by volume. The highest …
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Embryo and Gamete Development Upon Exposure to CCA Components: CrO3, CuO, and AS2O5
… developing gametes and embryos among which are chromium trioxide (CrO<sub>3</sub>), cupric oxide (CuO) and arsenic pentaoxide (As<sub>2</sub>O<sub>5</sub>) as a mixture (CCA) or individually. Controversy surrounding the safety of CCA-treated wood centers primarily on the toxicity of its …
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Nanomagnetismus von epitaktischen Fe(110)- und CrO 2 (100)-Strukturen im Hinblick auf potentielle spinelektronische Anwendungen
… of thin epitaxial (100)-oriented chromium dioxide films are presented in chapter 2. Chromium dioxide belongs to the class of half-metallic ferromagnets that are – in addition to the ferromagnetic properties – characterized by a high degree of spin polarization. By using two …
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A study of aromatic cyclodehydration, I. Ortho effects II. The catalytic effect of metal oxides
… o-dibenzoylbenzenes which are all solids. Chromium trioxide in acetic acid was usually found to be the best reagent for this purpose. Two of the 9-phenylanthracenes were oxidized to the corresponding 9-phenyl-9-hydroxy-10-anthrones using sodium dichromate in acetic acid. This reaction is …