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Digitale Medien

Neutron Yields from Americium–Beryllium Alloys (1955)

RUNNALLS, O. J. C. ; BOUCHER, R. R.

[s.l.] : Nature Publishing Group

Nature 176 (1955), S. 1019-1020

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] The oc-radioactive purity of the americium was 99-99 per cent. The total inactive impurities were 0'5 per cent. Americium trifluoride was prepared by fluorinating americium dioxide with a mixture of dry hydrogen fluoride and hydrogen at 650 C. in platinum. The americium trifluoride was mixed with ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/1761019b0

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Digitale Medien

Activation of chloride conductance induced by potassium in tracheal epithelium (1988)

Stutts, M. J. ; Gatzy, J. T. ; Boucher, R. C.

Springer

Pflügers Archiv 411 (1988), S. 252-258

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ISSN: 1432-2013

Schlagwort(e): Potassium depolarization ; Chloride conductance ; Ion fluxes

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract The effects of partial replacement of bathing solution sodium by potassium on potential difference, conductance and ion transport of canine tracheal epithelium were studied in Ussing chambers. Whereas up to 100 mmol/l mucosal K+ had no effect, raised serosal [K+] induced a concentration dependent decrease in transepithelial potential difference and increase in conductance. When serosal K+ was 100 mmol/l, the potential difference fell 30 mV to 1.1±1.0 mV and conductance rose 4.5 mS/cm2 to 6.6 ±0.9 mS/cm2. Seventy-five percent of the K+ induced conductance required Cl− (120 mmol/l) in the luminal bathing solution. Unidirectional Cl− fluxes were increased by raised serosal K+ but14C-mannitol permeability was unchanged. The increased unidirectional Cl− flux induced by high K+ exposure was inhibited by luminal exposure to diphenylamine-2-carboxylic acid (DPC) or other chloride channel blockers, but was not inhibited by loop diuretics. These results suggest that in the presence of 100 mmol/l serosal K+ the transcellular chloride conductance of tracheal epithelium was increased. Increased chloride conductance of the apical cell membrane contributed to the raised transcellular permeability, but the route across the basolateral cell membrane was not identified.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00585111

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Digitale Medien

The crystal structure of β-PuSi2 (1955)

Runnalls, O. J. C. ; Boucher, R. R.

Copenhagen : International Union of Crystallography (IUCr)

Acta crystallographica 8 (1955), S. 592-592

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ISSN: 0001-5520

Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Thema: Geologie und Paläontologie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1107/S0365110X55001825

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