scholarly journals Effects of Different Light Intensities on the Growth and Accumulation of Photosynthetic Products in Panax ginseng C. A. Meyers

2020 ◽  
Vol 58 (4) ◽  
pp. 131-135
Author(s):  
Takanori KURONUMA ◽  
Qiyang WANG ◽  
Masaya ANDO ◽  
Hitoshi WATANABE
Keyword(s):  
Panax Ginseng ◽  
Light Intensities ◽  
Photosynthetic Products

The potential analgesic and anti-inflammatory activities of Panax ginseng head BuOH fraction in vivo

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
JH Lee ◽  
JH Lee ◽  
YM Lee ◽  
PN Kim ◽  
CS Jeong
Keyword(s):  
Panax Ginseng ◽  
Anti Inflammatory

Comparison of quality and ginsenoside contents in roots of Panax ginseng at various ages in Gangwon, Korea

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
HN Jeong ◽  
KJ Lee ◽  
JS Jeong ◽  
YM Mo ◽  
SJ Lee ◽  
...  
Keyword(s):  
Panax Ginseng

Comparison of growth characteristics and quality of Korean ginseng (Panax ginseng C.A. Meyer) using different shade materials

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
HH Kim ◽  
BJ Seong ◽  
KS Lee ◽  
SI Kim ◽  
JM Geun ◽  
...  
Keyword(s):  
Panax Ginseng ◽  
Growth Characteristics ◽  
Korean Ginseng

Catalyst Halogenation Enables Rapid and Efficient Polymerizations with Visible to Near-Infrared Light

2020 ◽  
Author(s):  
Alex Stafford ◽  
Dowon Ahn ◽  
Emily Raulerson ◽  
Kun-You Chung ◽  
Kaihong Sun ◽  
...  
Keyword(s):  
Near Infrared ◽  
Transient Absorption ◽  
Reaction Times ◽  
Infrared Light ◽  
Structure Property ◽  
Light Emitting ◽  
Structure Property Relationships ◽  
Nir Light ◽  
Light Intensities ◽  
Emission Quenching

Driving rapid polymerizations with visible to near-infrared (NIR) light will enable nascent technologies in the emerging fields of bio- and composite-printing. However, current photopolymerization strategies are limited by long reaction times, high light intensities, and/or large catalyst loadings. Improving efficiency remains elusive without a comprehensive, mechanistic evaluation of photocatalysis to better understand how composition relates to polymerization metrics. With this objective in mind, a series of methine- and aza-bridged boron dipyrromethene (BODIPY) derivatives were synthesized and systematically characterized to elucidate key structure-property relationships that facilitate efficient photopolymerization driven by visible to NIR light. For both BODIPY scaffolds, halogenation was shown as a general method to increase polymerization rate, quantitatively characterized using a custom real-time infrared spectroscopy setup. Furthermore, a combination of steady-state emission quenching experiments, electronic structure calculations, and ultrafast transient absorption revealed that efficient intersystem crossing to the lowest excited triplet state upon halogenation was a key mechanistic step to achieving rapid photopolymerization reactions. Unprecedented polymerization rates were achieved with extremely low light intensities (< 1 mW/cm<sup>2</sup>) and catalyst loadings (< 50 μM), exemplified by reaction completion within 60 seconds of irradiation using green, red, and NIR light-emitting diodes.

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