scholarly journals Effects of Internal Conductance on the Temperature Dependence of the Photosynthetic Rate in Spinach Leaves from Contrasting Growth Temperatures

2006 ◽  
Vol 47 (8) ◽  
pp. 1069-1080 ◽  
Author(s):  
Wataru Yamori ◽  
Ko Noguchi ◽  
Yuko T. Hanba ◽  
Ichiro Terashima
Keyword(s):  
Temperature Dependence ◽  
Photosynthetic Rate ◽  
Internal Conductance ◽  
Spinach Leaves

scholarly journals Seasonal Changes in Temperature Dependence of Photosynthetic Rate in Rice Under a Free-air CO2 Enrichment

2006 ◽  
Vol 97 (4) ◽  
pp. 549-557 ◽  
Author(s):  
ALMAZ BORJIGIDAI ◽  
KOUKI HIKOSAKA ◽  
TADAKI HIROSE ◽  
TOSHIHIRO HASEGAWA ◽  
MASUMI OKADA ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Photosynthetic Rate ◽  
Seasonal Changes ◽  
Co2 Enrichment ◽  
Free Air Co2 Enrichment ◽  
Free Air

scholarly journals Retranslocation of nutrients in coffee leaves of cultivars Red Catuaí IAC 144 and IAC 125 RN

2021 ◽  
pp. 586-593
Author(s):  
Carlos Diego da Silva ◽  
Alian Cássio Pereira Cavalcante ◽  
Marcos Fabian Sanabria Franco ◽  
Pedro Ruben Viera Fariña ◽  
Guilherme Antônio Vieira de Andrade ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Chlorophyll A ◽  
Photosynthetic Rate ◽  
Total Chlorophyll ◽  
Phenological Stages ◽  
Alternative Method ◽  
Internal Conductance ◽  
Young Leaves ◽  
The Ideal

Knowledge of the retranslocation of nutrients in plants can help in the management of coffee fertilization, especially with regard to the ideal time and method of application and the need for installments. The aim of this study was to evaluate the retranslocation of nutrients in coffee leaves of two varieties. The treatments consisted of two varieties of coffee (Red Catuaí IAC 144 and IAC 125 RN) and coffee leaves in four phenological stages (young leaves, diagnostic, senescent and deciduous). The index leaf of Catuaí Vermelho IAC 144 showed the highest photosynthetic rate and stomatal conductance, while the internal conductance of CO2 was higher in young and senescent leaves, and the index and senescent leaves showed the highest efficiencies in the use of water. The chlorophyll a, b and total chlorophyll has higher concentrations in the index leaf, while the highest carotenoids occurred in young and senescent leaves. The highest levels of N, P, K and Zn in Catuaí Vermelho IAC 144 was occurred in young leaves and the highest Ca and Fe in senescent leaves. The highest levels of N, P and K in the IAC 125 RN variety was occurred in young leaves, Ca and Mg in deciduous leaves and S in senescent and deciduous leaves. Nutrients with low mobility in the plant must be parceled, the application of Zn leaves is an alternative method of supplying this nutrient, as it has retranslocation via phloem

scholarly journals Temperature acclimation of photosynthesis: mechanisms involved in the changes in temperature dependence of photosynthetic rate

2005 ◽  
Vol 57 (2) ◽  
pp. 291-302 ◽  
Author(s):  
Kouki Hikosaka ◽  
Kazumasa Ishikawa ◽  
Almaz Borjigidai ◽  
Onno Muller ◽  
Yusuke Onoda
Keyword(s):  
Temperature Dependence ◽  
Photosynthetic Rate ◽  
Temperature Acclimation

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Temperature Dependence of Magnetic Domains and Wall Structures

1972 ◽  
Vol 30 ◽  
pp. 496-497
Author(s):  
Sonoko Tsukahara ◽  
Tadami Taoka ◽  
Hisao Nishizawa
Keyword(s):  
Temperature Dependence ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Iron Film ◽  
Objective Lens ◽  
Lorentz Microscopy ◽  
Domain Structures ◽  
Wall Structures ◽  
Crystal Films ◽  
Metallurgical Structure

The high voltage Lorentz microscopy was successfully used to observe changes with temperature; of domain structures and metallurgical structures in an iron film set on the hot stage combined with a goniometer. The microscope used was the JEM-1000 EM which was operated with the objective lens current cut off to eliminate the magnetic field in the specimen position. Single crystal films with an (001) plane were prepared by the epitaxial growth of evaporated iron on a cleaved (001) plane of a rocksalt substrate. They had a uniform thickness from 1000 to 7000 Å.The figure shows the temperature dependence of magnetic domain structure with its corresponding deflection pattern and metallurgical structure observed in a 4500 Å iron film. In general, with increase of temperature, the straight domain walls decrease in their width (at 400°C), curve in an iregular shape (600°C) and then vanish (790°C). The ripple structures with cross-tie walls are observed below the Curie temperature.

Temperature dependence of generation-recombination noise in p-n junctions

2002 ◽  
Vol 12 (3) ◽  
pp. 71-74
Author(s):  
J. A. Jiménez Tejada ◽  
A. Godoy ◽  
A. Palma ◽  
P. Cartujo
Keyword(s):  
Temperature Dependence
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