Another look at reactions of 4-hydroxycoumarin with hydroxyl radical in the environment: Deprotonation and diffusion effects

2021 ◽  
Author(s):  
Quan Van Vo ◽  
Nguyen Thi Hoa ◽  
Adam Mechler
Keyword(s):  
Hydroxyl Radical ◽  
Coumarin Derivatives ◽  
Important Chemical ◽  
Diffusion Effects ◽  
And Diffusion

Coumarins are important chemical precursors for the synthesis of anticoagulants used as human medicines as well as rodenticides. Environmental discharge of these coumarin derivatives, commonly known as 4-Hydroxycoumarins, is therefore...

scholarly journals Potential-Induced Degradation of Cu(In,Ga)Se2 Solar Cells: Alkali Metal Drift and Diffusion Effects

2018 ◽  
Vol 8 (5) ◽  
pp. 1337-1342 ◽  
Author(s):  
Christopher P. Muzzillo ◽  
Stephen Glynn ◽  
Peter Hacke ◽  
Helio R. Moutinho ◽  
Matthew R. Young ◽  
...  
Keyword(s):  
Solar Cells ◽  
Alkali Metal ◽  
Diffusion Effects ◽  
And Diffusion

Thermal Effects of Power Plants on Lakes

1972 ◽  
Vol 94 (2) ◽  
pp. 163-168 ◽  
Author(s):  
F. K. Moore ◽  
Y. Jaluria
Keyword(s):  
Heat Flux ◽  
Power Plant ◽  
Power Plants ◽  
Constant Heat Flux ◽  
Critical Parameters ◽  
Cayuga Lake ◽  
Winter Temperatures ◽  
Diffusion Effects ◽  
Power Plant Cooling ◽  
And Diffusion

The natural thermal cycle of a stratified water body used for power-plant cooling will be disturbed both by heat addition and the mixing effect of withdrawal and return. A perturbation analysis for these effects is made with a model based on the assumption that a Richardson number is constant at the base of any stratified layer. On a further assumption about the profiles of wind-driven return currents, constant heat flux from that layer is inferred. This heat flux, and the diffusion coefficient at the thermocline, are the critical parameters of the simple one-dimensional line-segment model, and are chosen to give good imitation of the known natural cycle of Cayuga Lake. The model is then perturbed in terms of both heat flux and diffusion to give power-plant impact for that lake. Both transient and final cycle changes of summer and winter temperatures and stratification and overturn are calculated. It is shown that the heat and diffusion effects are comparable, and that the latter may be dominant if the discharge is diluted to meet a thermal standard. Certain implications as to strategy of water use are developed.

O86. Nitric oxide-releasing hydrogels for increasing dermal blood flow: Concentration and diffusion effects

Nitric Oxide ◽  
2008 ◽  
Vol 19 ◽  
pp. 40
Author(s):  
Marcela Gennari ◽  
Regiane da Silva ◽  
Marcelo Ganzarolli de Oliveira
Keyword(s):  
Nitric Oxide ◽  
Blood Flow ◽  
Diffusion Effects ◽  
Nitric Oxide Releasing ◽  
And Diffusion ◽  
Dermal Blood Flow
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