Present Status and Technical Advances of Steelworks Lime for Basic Oxygen Furnaces in Germany

The Reaction Parameters of Lime ◽

10.1520/stp41941s ◽

2009 ◽

pp. 173-173-20

Author(s):

Karl-Heinz Obst ◽

Jürgen Stradtmann ◽

Wolfgang Ullrich ◽

Gert König

Keyword(s):

Present Status ◽

Basic Oxygen ◽

Technical Advances

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Present status of radio astrometry with baselines ≤ 35 km

International Astronomical Union Colloquium ◽

10.1017/s025292110007411x ◽

1978 ◽

Vol 48 ◽

pp. 175-178 ◽

Cited By ~ 1

Author(s):

K. J. Johnston

Keyword(s):

Present Status ◽

Future Work

A summary of results for radio astrometry with baselines ≤ 35 km and priorities for future work are given.

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Fluorescence ratio imaging of dynamic intracellular ionic signals

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100102298 ◽

1988 ◽

Vol 46 ◽

pp. 42-43

Author(s):

R. Y. Tsien ◽

A. Minta ◽

M. Poenie ◽

J.P.Y. Kao ◽

A. Harootunian

Keyword(s):

Binding Sites ◽

Living Cells ◽

Molecular Engineering ◽

Ph Indicators ◽

Highly Sensitive ◽

Fluorescence Ratio Imaging ◽

Ratio Imaging ◽

Technical Advances ◽

Indicator Dyes ◽

Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

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