scholarly journals On the Relation between Refractive Index of the Leaf Sap and Cold Resistance of the Tea Plant in Winter

1953 ◽  
pp. 32-33
Author(s):  
Hisashi MATSUI
Keyword(s):  
Refractive Index ◽  
Cold Resistance ◽  
Tea Plant

scholarly journals Physiological studies on the cold resistance of the tea plant

1954 ◽  
Vol 23 (2) ◽  
pp. 121-127
Author(s):  
Takasi SIMURA ◽  
Akira WATANABE ◽  
Terutaka KANOO
Keyword(s):  
Cold Resistance ◽  
Tea Plant ◽  
Physiological Studies

scholarly journals On the Relation of Hydrophilic Colloiols to Cold Resistance of Tea Plant

1956 ◽  
Vol 25 (2) ◽  
pp. 107-108
Author(s):  
Niro TOMO ◽  
Yasumoto FUCHINOUE ◽  
Hiroho FUCHINOUE
Keyword(s):  
Cold Resistance ◽  
Tea Plant

scholarly journals Genome-wide identification, characterization, and expression analysis of tea plant autophagy-related genes (CsARGs) reveals diverse roles during development and abiotic stress

2020 ◽  
Author(s):  
Wenjun Qian ◽  
Huan Wang ◽  
ZhaoTang Ding ◽  
Mengjie Gou ◽  
Jianhui Hu ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Expression Analysis ◽  
Stress Responses ◽  
Cold Resistance ◽  
Treatment Time ◽  
Resistance Breeding ◽  
Tea Plant ◽  
Specific Expression ◽  
Genome Wide ◽  
Tea Plants

Abstract Background Autophagy, meaning ‘self-eating’, is required for degradation and recycling of cytoplasmic constituents under stressful or non-stressful conditions, thereby contributing to maintaining cellular homeostasis, delaying aged and longevity in eukaryotes. So far, the functions of autophagy have been intensively studied in yeast, mammals and model plants, but few studies have focused on economic crops, especially for tea plants, the roles of autophagy in coping with different environment stimuluses have not yet been detailed. Therefore, exploring the functions of autophagy related genes in tea plant would contribute to further understanding the mechanism of autophagy in response to stresses in woody plants. Results Here, we totally identified 35 CsARGs in tea plant. Each CsARG is highly conserved with its homologues stemmed from other plant species, except for CsATG14. Tissue-specific expression analysis revealed that the abundances of CsARGs were varied with different tissues, but CsATG8c/i showed a certain degree of tissue specificity, respectively. Under hormones and abiotic stress conditions, most of CsARGs were up-regulated at different treatment time points. In addition, the transcriptions of 10 CsARGs were higher in cold-resistance cultivar ‘Longjing43’ than the cold-susceptible cultivar ‘Damianbai’ during CA periods, however, CsATG101 showed a contrary tendency. Conclusions We comprehensively analyzed the bioinformatics and physiological roles of CsARGs in tea plant, and these results provide the basis for deepen exploring the molecular mechanism of autophagy involved in tea plant growth and development and stress responses. Meanwhile, some CsARGs would be served as putative molecular markers for cold-resistance breeding of tea plant in future.

TEM characterization of proton-exchanged LiNbO3 optical waveguides

1986 ◽  
Vol 44 ◽  
pp. 480-481
Author(s):  
W. E. Lee
Keyword(s):  
Refractive Index ◽  
Benzoic Acid ◽  
Optical Waveguides ◽  
Total Internal Reflection ◽  
Index Of Refraction ◽  
Optical Measurements ◽  
Lithium Ions ◽  
Wide Channel ◽  
Tem Characterization

An optical waveguide consists of a several-micron wide channel with a slightly different index of refraction than the host substrate; light can be trapped in the channel by total internal reflection.Optical waveguides can be formed from single-crystal LiNbO3 using the proton exhange technique. In this technique, polished specimens are masked with polycrystal1ine chromium in such a way as to leave 3-13 μm wide channels. These are held in benzoic acid at 249°C for 5 minutes allowing protons to exchange for lithium ions within the channels causing an increase in the refractive index of the channel and creating the waveguide. Unfortunately, optical measurements often reveal a loss in waveguiding ability up to several weeks after exchange.

Light microscopy of ceramics

1993 ◽  
Vol 51 ◽  
pp. 908-909
Author(s):  
Walter C. McCrone
Keyword(s):  
Refractive Index ◽  
Light Microscopy ◽  
Light Microscope ◽  
Polarized Light ◽  
Refractive Indices ◽  
Complete Coverage ◽  
The Subject ◽  
Lower Refractive Index

An excellent chapter on this subject by V.D. Fréchette appeared in a book edited by L.L. Hench and R.W. Gould in 1971 (1). That chapter with the references cited there provides a very complete coverage of the subject. I will add a more complete coverage of an important polarized light microscope (PLM) technique developed more recently (2). Dispersion staining is based on refractive index and its variation with wavelength (dispersion of index). A particle of, say almandite, a garnet, has refractive indices of nF = 1.789 nm, nD = 1.780 nm and nC = 1.775 nm. A Cargille refractive index liquid having nD = 1.780 nm will have nF = 1.810 and nC = 1.768 nm. Almandite grains will disappear in that liquid when observed with a beam of 589 nm light (D-line), but it will have a lower refractive index than that liquid with 486 nm light (F-line), and a higher index than that liquid with 656 nm light (C-line).

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