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Digitale Medien

On foliated circle bundles over closed orientable 3-manifolds (1997)

Miyoshi, S.

Springer

Commentarii mathematici Helvetici 72 (1997), S. 400-410

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ISSN: 1420-8946

Schlagwort(e): Key words. Foliated circle bundles, Milnor-Wood inequality, Fuchsian groups

Quelle: Springer Online Journal Archives 1860-2000

Thema: Mathematik

Notizen: Abstract. We show that there exists a family of smooth orientable circle bundles over closed orientable 3-manifolds each of which has a codimension-one foliation transverse to the fibres of class C 0 but has none of class C 3 . There arises a necessary condition induced from the Milnor-Wood inequality for the existence of a foliation transverse to the fibres of an orientable circle bundle over a closed orientable 3-manifold. We show that with some exceptions this necessary condition is also sufficient for the existence of a smooth transverse foliation if the base space is a closed Seifert fibred manifold.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s000140050024

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Digitale Medien

Automated optimization of split ratio in capillary gas chromatography (1995)

Nishikawa, Y. ; Miyoshi, S. ; Shyoji, M. ; [weitere]

Weinheim : Wiley-Blackwell

Journal of High Resolution Chromatography 18 (1995), S. 753-756

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Details

ISSN: 0935-6304

Schlagwort(e): Capillary gas chromatography ; Electronic flow controller ; Advanced flow controller (AFC) ; Pressure programming ; Flow programming ; Automatic optimization ; Split injection ; Chemistry ; Analytical Chemistry and Spectroscopy

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: An electronic gas-flow controller system called Advanced Flow Control (AFC), which controls not only carrier gas pressure at the column inlet but also the total gas flow including the split flow, was designed and evaluated. BASIC programming of repetitive analyses of standard mixtures under varied split ratios and pressure programs allowed automated optimization of those conditions for the desired column loading and resolution between adjacent peaks.

Zusätzliches Material: 5 Ill.