Characterization of a generalized elliptical phase retarder by using equivalent theorem of a linear phase retarder and a polarization rotator

2011 ◽  
Author(s):  
Chih-Jen Yu ◽  
Chien Chou
Weed Science ◽  
1983 ◽  
Vol 31 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Thomas P. Price ◽  
Nelson E. Balke

Long-term absorption of14C-atrazine [2-chloro-4 - (ethylamino) - 6 - (isopropylamino) -s- triazine] by excised velvetleaf (Abutilon theophrastiMedic.) roots was investigated. A rapid, initial phase of absorption was followed by a long-term, linear phase of absorption, which resulted in atrazine accumulation in the tissue to concentrations above the external solution. This accumulation did not result from metabolism of the atrazine. Aging of the excised tissue appeared to be responsible for the accumulation. Dinitrophenol, but not cyanide, inhibited accumulation. Atrazine accumulation decreased as the temperature during absorption was decreased. The Q10the absorption rate was ca. 2.5 between 15 and 25 C. Efflux of atrazine from the tissue occurred in two phases. At 25 C, loss of 80% of the atrazine occurred in 20 min. At 4C, the rate of this efflux was slower and the phase lasted longer. At both 4 and 25 C a second, slower phase of efflux occurred through at least 6 h and resulted in loss of equal amounts of atrazine at the two temperatures. These experiments show that, in addition to rapid absorption of atrazine to a passive equilibrium, excised velvetleaf roots accumulate atrazine by a metabolically dependent process over long periods of time.


2001 ◽  
Vol 19 (4) ◽  
pp. 512-519 ◽  
Author(s):  
B.M.A. Rahman ◽  
S.S.A. Obayya ◽  
N. Somasiri ◽  
M. Rajarajan ◽  
K.T.V. Grattan ◽  
...  

2005 ◽  
Vol 40 (3) ◽  
pp. 383-399 ◽  
Author(s):  
Antoine Dazin ◽  
Patrick Dupont ◽  
Michel Stanislas

2006 ◽  
Vol 41 (3) ◽  
pp. 401-413 ◽  
Author(s):  
Antoine Dazin ◽  
Patrick Dupont ◽  
Michel Stanislas

2008 ◽  
Vol 88 (8) ◽  
pp. 1980-1989 ◽  
Author(s):  
Sanjay Nalbalwar ◽  
S.D. Joshi ◽  
R.K. Patney
Keyword(s):  

2013 ◽  
Vol 13 (4) ◽  
pp. 228-233 ◽  
Author(s):  
Dalilhia Nazaré dos Santos ◽  
Claudinéia Ferreira Nunes ◽  
Joyce Dória Rodrigues Soares ◽  
Thaís Cainã Teixeira Valente ◽  
Eduardo Alves ◽  
...  

The aimed was characterization and determining the time for Jatropha curcas callus subculture. The pattern of J. curcas callus development is sigmoidal with 5 distinct phases, and transplantation should be performed at the end of the deceleration phase (approximately day 28). During callus development, it was observed that at the onset of growth in the exponential phase the cells were internally disorganized; in the linear phase, respiratory metabolism was resumed through reorganization of the first mitochondria; and by the mid-deceleration phase, the cells were entirely active, and several organelles were detected. This organizational status was maintained throughout the stationary phase during which somatic pre-embryos were identified. At the end of the stationary phase, intracellular disruption began, and the cells entered senescence, which characterized the decline phase for the J. curcas calli growth curve.


Author(s):  
Sevgi Z. Gurbuz ◽  
Douglas B. Williams ◽  
William L. Melvin
Keyword(s):  

Author(s):  
B. L. Soloff ◽  
T. A. Rado

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.


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