Energy capture and carbon assimilation.

2022 ◽  
pp. 4-17
Author(s):  
T. M. DeJong
Keyword(s):  
Carbon Dioxide ◽  
Water Availability ◽  
Carbon Assimilation ◽  
Carbon Dioxide Concentration ◽  
Fruit Trees ◽  
Nutrient Supply ◽  
Factors Affecting ◽  
Energy Capture ◽  
Photosynthesis And Respiration ◽  
Supply Water

Abstract This chapter focuses on energy capture and carbon assimilation of fruit trees. It discusses the factors affecting photosynthesis and respiration, including temperature, carbon dioxide concentration, nutrient supply, water availability, oxygen, and carbohydrates.

Interrelations of photosynthesis and assimilation of elementary nitrogen in a blue-green alga

1960 ◽  
Vol 153 (950) ◽  
pp. 111-127 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Light Intensity ◽  
Nitrogen Assimilation ◽  
Relative Rate ◽  
Nitrogen Concentration ◽  
Carbon Assimilation ◽  
Carbon Dioxide Concentration ◽  
Mechanism Study ◽  
Wide Range ◽  
Elementary Nitrogen

In blue-green algae the hydrogen donors and carbon skeletons required in the fixation of elementary nitrogen may be supplied by the photosynthetic mechanism. Study of the kinetic relationships between the photosynthetic assimilation of carbon and the assimilation of nitrogen into the cell material of Anabaena cylindrica Lemm. has demonstrated correlations between the rates of the two processes consonant with the existence of such biochemical connexions. The effects of light intensity, carbon-dioxide concentration and nitrogen concentration were each studied at four different temperatures by determination of changes in amounts of cell carbon and cell nitrogen in cultures grown for 48 h. Temperature was found to have the most marked differential effect, both low and high temperatures depressing nitrogen assimilation to a greater extent than carbon assimilation. At any given temperature there was a close correlation between the rates of the two processes over a wide range of variation in other factors. Both carbon and nitrogen assimilation were found to be inhibited by relatively low concentrations of carbon dioxide. The rate of carbon assimilation per unit amount of cell nitrogen was found to be related in the usual way to light intensity, but to be reduced at low nitrogen concentrations. The relative rate of nitrogen assimilation was likewise found to be related in the expected way to nitrogen concentration but to increase with light intensity and to be reduced at carbon-dioxide concentrations limiting for carbon assimilation.

scholarly journals Factors Affecting the Diurnal Variation of Carbon Dioxide Concentration in Standing Water in a Rice Field.

2001 ◽  
Vol 57 (3) ◽  
pp. 117-126 ◽  
Author(s):  
Takumi KISHIDA ◽  
Toru IWATA ◽  
Takeshi MIURA ◽  
Eiji OHTAKI ◽  
Katsutoshi NISHIMURA ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Diurnal Variation ◽  
Rice Field ◽  
Carbon Dioxide Concentration ◽  
Factors Affecting ◽  
Standing Water

Communication: Photoinduced Carbon Dioxide Binding with Surface-Functionalized Silicon Quantum Dots

2018 ◽  
Author(s):  
Oscar A. Douglas-Gallardo ◽  
Cristián Gabriel Sánchez ◽  
Esteban Vöhringer-Martinez
Keyword(s):  
Carbon Dioxide ◽  
Quantum Dots ◽  
Atmospheric Carbon Dioxide ◽  
Density Functional ◽  
Tight Binding ◽  
Carbon Dioxide Concentration ◽  
Research Area ◽  
Silicon Quantum Dots ◽  
Dependent Model ◽  
Photoinduced Charge

<div> <div> <div> <p>Nowadays, the search of efficient methods able to reduce the high atmospheric carbon dioxide concentration has turned into a very dynamic research area. Several environmental problems have been closely associated with the high atmospheric level of this greenhouse gas. Here, a novel system based on the use of surface-functionalized silicon quantum dots (sf -SiQDs) is theoretically proposed as a versatile device to bind carbon dioxide. Within this approach, carbon dioxide trapping is modulated by a photoinduced charge redistribution between the capping molecule and the silicon quantum dots (SiQDs). Chemical and electronic properties of the proposed SiQDs have been studied with Density Functional Theory (DFT) and Density Functional Tight-Binding (DFTB) approach along with a Time-Dependent model based on the DFTB (TD-DFTB) framework. To the best of our knowledge, this is the first report that proposes and explores the potential application of a versatile and friendly device based on the use of sf -SiQDs for photochemically activated carbon dioxide fixation. </p> </div> </div> </div>

Hyperspectral characteristics and leaf area index monitoring of rice (Oryza sativa L.) under carbon dioxide concentration enrichment

2021 ◽  
Vol 54 (3) ◽  
pp. 231-243
Author(s):  
Chao Liu ◽  
Zhenghua Hu ◽  
Rui Kong ◽  
Lingfei Yu ◽  
Yuanyuan Wang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Oryza Sativa ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Oryza Sativa L ◽  
Carbon Dioxide Concentration ◽  
Area Index
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