Reduction of methylene blue and related dyes by gamma-irradiated alkali halides

1989 ◽  
Vol 131 (1) ◽  
pp. 95-103 ◽  
Author(s):  
H. J. Arnikar ◽  
S. Nilegaonkar ◽  
S. B. Bhosale ◽  
A. H. Kapadi
1989 ◽  
Vol 137 (4-5) ◽  
pp. 213-216 ◽  
Author(s):  
T. Hagihara ◽  
Y. Hayashiuchi ◽  
Y. Kojima ◽  
Y. Yamamoto ◽  
S. Ohwaki ◽  
...  

Nature ◽  
1970 ◽  
Vol 228 (5269) ◽  
pp. 357-358 ◽  
Author(s):  
H. J. ARNIKAR ◽  
P. S. DAMLE ◽  
B. D. CHAURE ◽  
B. S. MADHAV RAO

1978 ◽  
Vol 56 (12) ◽  
pp. 1527-1530 ◽  
Author(s):  
S. Dannefaer ◽  
D. P. Kerr ◽  
G. W. Dean ◽  
B. G. Hogg

A systematic investigation of 17 gamma-irradiated alkali halides using positron lifetime and Doppler broadening techniques has been performed. For eight of the alkali halides (NaCl, NaBr, KCl, KBr, KI, RbCl, RbBr, and RbI), a new lifetime with values between 1.0 and 1.3 ns is attributed to positrons trapped in F centres. Despite large F centre concentrations in LiF, LiCl, LiBr, and NaF, no such lifetime component is observed in these samples. Doppler broadening measurements show that in nearly all cases the momentum distribution becomes narrower upon irradiation. The experimental data are discussed in view of a recent theoretical treatment of the positron – F centre problem.


Author(s):  
B. J. Panessa ◽  
J. F. Gennaro

Tissue from the hood and sarcophagus regions were fixed in 6% glutaraldehyde in 1 M.cacodylate buffer and washed in buffer. Tissue for SEM was partially dried, attached to aluminium targets with silver conducting paint, carbon-gold coated(100-500Å), and examined in a Kent Cambridge Stereoscan S4. Tissue for the light microscope was post fixed in 1% aqueous OsO4, dehydrated in acetone (4°C), embedded in Epon 812 and sectioned at ½u on a Sorvall MT 2 ultramicrotome. Cross and longitudinal sections were cut and stained with PAS, 0.5% toluidine blue and 1% azure II-methylene blue. Measurements were made from both SEM and Light micrographs.The tissue had two structurally distinct surfaces, an outer surface with small (225-500 µ) pubescent hairs (12/mm2), numerous stoma (77/mm2), and nectar glands(8/mm2); and an inner surface with large (784-1000 µ)stiff hairs(4/mm2), fewer stoma (46/mm2) and larger, more complex glands(16/mm2), presumably of a digestive nature.


1973 ◽  
Vol 34 (C9) ◽  
pp. C9-425-C9-430 ◽  
Author(s):  
L. B. HARRIS ◽  
J. L. SCHLEDERER
Keyword(s):  

1976 ◽  
Vol 37 (C7) ◽  
pp. C7-253-C7-259 ◽  
Author(s):  
C. R.A. CATLOW ◽  
J. CORISH ◽  
K. M. DILLER ◽  
P. W.M. JACOBS ◽  
M. J. NORGETT

1976 ◽  
Vol 37 (C7) ◽  
pp. C7-86-C7-86
Author(s):  
M. T. MONTOJO ◽  
F. JAQUE ◽  
C. SÁNCHEZ
Keyword(s):  

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