scholarly journals Kinetics of Growth Retardant and Hormone Interactions in Affecting Cucumber Hypocotyl Elongation

1967 ◽  
Vol 42 (5) ◽  
pp. 677-684 ◽  
Author(s):  
Thomas C. Moore
Keyword(s):  
Growth Retardant ◽  
Hypocotyl Elongation ◽  
Hormone Interactions ◽  
Kinetics Of ◽  
Cucumber Hypocotyl

scholarly journals Gibberellic Acid Stimulation of Cucumber Hypocotyl Elongation

1989 ◽  
Vol 90 (4) ◽  
pp. 1335-1340 ◽  
Author(s):  
Anne Taylor ◽  
Daniel J. Cosgrove
Keyword(s):  
Gibberellic Acid ◽  
Hypocotyl Elongation ◽  
Cucumber Hypocotyl ◽  
Stimulation Of

scholarly journals Similarity between Cytokinin and Blue Light Inhibition of Cucumber Hypocotyl Elongation

1991 ◽  
Vol 95 (1) ◽  
pp. 77-81 ◽  
Author(s):  
Lila Cohen ◽  
Shimon Gepstein ◽  
Benjamin A. Horwitz
Keyword(s):  
Blue Light ◽  
Hypocotyl Elongation ◽  
Light Inhibition ◽  
Cucumber Hypocotyl

Direct observations of radiation-enhanced transformations in glass

1983 ◽  
Vol 41 ◽  
pp. 354-355
Author(s):  
J. F. DeNatale ◽  
D. G. Howitt
Keyword(s):  
Glass Matrix ◽  
Diffusion Mechanism ◽  
Bubble Formation ◽  
Silicate Glasses ◽  
Phase Decomposition ◽  
Direct Observations ◽  
Thin Foils ◽  
Oxygen Bubble ◽  
Electron Energy Loss ◽  
Kinetics Of

The electron irradiation of silicate glasses containing metal cations produces various types of phase separation and decomposition which includes oxygen bubble formation at intermediate temperatures figure I. The kinetics of bubble formation are too rapid to be accounted for by oxygen diffusion but the behavior is consistent with a cation diffusion mechanism if the amount of oxygen in the bubble is not significantly different from that in the same volume of silicate glass. The formation of oxygen bubbles is often accompanied by precipitation of crystalline phases and/or amorphous phase decomposition in the regions between the bubbles and the detection of differences in oxygen concentration between the bubble and matrix by electron energy loss spectroscopy cannot be discerned (figure 2) even when the bubble occupies the majority of the foil depth.The oxygen bubbles are stable, even in the thin foils, months after irradiation and if van der Waals behavior of the interior gas is assumed an oxygen pressure of about 4000 atmospheres must be sustained for a 100 bubble if the surface tension with the glass matrix is to balance against it at intermediate temperatures.

Irradiation behavior of pyrolytic silicon carbide

1983 ◽  
Vol 41 ◽  
pp. 72-73
Author(s):  
R. J. Lauf
Keyword(s):  
Silicon Carbide ◽  
Fission Products ◽  
Thermodynamics And Kinetics ◽  
Neutron Fluences ◽  
Fuel Particles ◽  
Sic Coatings ◽  
Irradiation Behavior ◽  
Kinetics Of ◽  
Htgr Fuel

Fuel particles for the High-Temperature Gas-Cooled Reactor (HTGR) contain a layer of pyrolytic silicon carbide to act as a miniature pressure vessel and primary fission product barrier. Optimization of the SiC with respect to fuel performance involves four areas of study: (a) characterization of as-deposited SiC coatings; (b) thermodynamics and kinetics of chemical reactions between SiC and fission products; (c) irradiation behavior of SiC in the absence of fission products; and (d) combined effects of irradiation and fission products. This paper reports the behavior of SiC deposited on inert microspheres and irradiated to fast neutron fluences typical of HTGR fuel at end-of-life.

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