Direct exchange reactions in a liquid: the cage effect and its spectroscopic manifestations

1993 ◽  
Vol 97 (10) ◽  
pp. 2334-2343 ◽  
Author(s):  
M. Ben-Nun ◽  
R. D. Levine
Keyword(s):  
Cage Effect ◽  
Exchange Reactions ◽  
Direct Exchange

Molecular orbital analysis of the orientation-dependent barrier to direct exchange reactions

1991 ◽  
Vol 113 (9) ◽  
pp. 3217-3225 ◽  
Author(s):  
Davide M. Proserpio ◽  
Roald Hoffmann ◽  
R. D. Levine
Keyword(s):  
Molecular Orbital ◽  
Exchange Reactions ◽  
Direct Exchange ◽  
Molecular Orbital Analysis ◽  
Orbital Analysis

Exchange reactions and electrolytic dissociation

1948 ◽  
Vol 45 ◽  
pp. 147-149 ◽  
Author(s):  
C. C. Evans ◽  
S. Sugden
Keyword(s):  
Exchange Reactions ◽  
Electrolytic Dissociation

Modeling of photosynthesis light curves by linear splines

2019 ◽  
pp. 20-29
Author(s):  
Alexander S. Lelekov ◽  
Rudolf P. Trenkenshu
Keyword(s):  
Experimental Data ◽  
Chlorophyll A ◽  
Skeletonema Costatum ◽  
Light Flux ◽  
Photosynthesis Rate ◽  
Light Curves ◽  
External Irradiation ◽  
Exchange Reactions ◽  
Cell Adaptation ◽  
Linear Splines

The paper presents an example of the linear splines use to describe the photosynthesis light curves for microalgae culture. The main mathematical models of the relationship between photosynthesis rate and light are listed. Based on the previously formulated basic principles of modeling microalgae photobiosynthesis, a mathematical model is proposed that describes the dependence of the assimilation number of chlorophyll a on the value of the light flux by linear splines. The advantage of the proposed approach is a clear definition of the point of change of the limiting factor. It is shown that light-limited photosynthesis rate is determined not only by external irradiation, but also by the concentration of chlorophyll a. The light-saturated rate depends on the amount of a key enzyme complex, which limits the rate of energy exchange reactions in the cell. Verification of the proposed model on the example of the diatom microalgae Skeletonema costatum was carried out. It is shown that the higher the degree of cell adaptation to high irradiation, the better the photosynthesis curve is described by linear splines. If S. costatum cells are adapted to low irradiation, deviations of experimental data from the idealized broken line are observed, which are caused by changes in the pigment composition. When the experimental data are normalized, the cell adaptation factor is reduced, all points are described by a single broken line, which indicates the universality of the proposed approach.

Use of the overhead projector to illustrate ion exchange reactions

1976 ◽  
Vol 5 (1) ◽  
pp. 33-34
Author(s):  
F. L. Himes
Keyword(s):  
Ion Exchange ◽  
Overhead Projector ◽  
Exchange Reactions

Organocatalyzed Selective C-D/C-H Exchange Reactions in Conjugated Triene

2015 ◽  
Vol 12 (3) ◽  
pp. 181-186
Author(s):  
Isao Yamaguchi ◽  
Mikihiko Minamitani
Keyword(s):  
Exchange Reactions ◽  
Conjugated Triene

β-Diketone chelates of bis(ethylene)rhodium and products of exchange reactions with chloro-substituted dienes

1972 ◽  
Vol 37 (9) ◽  
pp. 3081-3089 ◽  
Author(s):  
K. Bouchal ◽  
J. Škramovská ◽  
P. Schmidt ◽  
F. Hrabák
Keyword(s):  
Exchange Reactions
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