Cytosolic aromatic aldehyde dehydrogenase provides benzoic acid for xanthone biosynthesis in Hypericum

2021 ◽  
Vol 160 ◽  
pp. 82-93
Author(s):  
Poonam Singh ◽  
David Kaufholdt ◽  
Mina Awadalah ◽  
Robert Hänsch ◽  
Ludger Beerhues ◽  
...  
2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Naofumi Kamimura ◽  
Takayuki Goto ◽  
Kenji Takahashi ◽  
Daisuke Kasai ◽  
Yuichiro Otsuka ◽  
...  

Author(s):  
W. E. Lee

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.


2019 ◽  
Author(s):  
K Georgousaki ◽  
N Tsafantakis ◽  
S Gumeni ◽  
V González-Menéndez ◽  
G Lambrinidis ◽  
...  

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