scholarly journals Efficient resolution of 3-aryloxy-1,2-propanediols using CLEA-YCJ01 with high enantioselectivity

RSC Advances ◽  
2019 ◽  
Vol 9 (24) ◽  
pp. 13757-13764 ◽  
Author(s):  
Bin Wang ◽  
Bin Wu ◽  
Bingfang He
Keyword(s):  
High Conversion

CLEAs-YCJ01 had high enantioselectivity to a series of 3-aryloxy-1,2-propanediols with high conversion (≥49.3%), favorable ee values (94.8–99.5%) for S-diacetates and high ee values (92.1–99.2%) for R-monoacetate.

Feasible Ways to Achieve High Conversion in Thorium-Fueled CANDU and PWR Reactors

2009 ◽  
pp. 62-72 ◽  
Author(s):  
P. Guillemin ◽  
A. Nuttin ◽  
A. Bidaud ◽  
J. Brizi ◽  
N. Capellan ◽  
...  
Keyword(s):  
High Conversion

Comparison of square and hexagonal fuel lattices for high conversion PWRs

Kerntechnik ◽  
2012 ◽  
Vol 77 (4) ◽  
pp. 292-299 ◽  
Author(s):  
D. Kotlyar ◽  
E. Shwageraus
Keyword(s):  
High Conversion

Selectivity changes of acetone transformation over ZSM-5 zeolites with different acido-basic properties

1989 ◽  
Vol 54 (8) ◽  
pp. 2054-2063 ◽  
Author(s):  
Jiří Čejka ◽  
Ludmila Kubelková ◽  
Pavel Jírů
Keyword(s):  
Main Product ◽  
High Conversion ◽  
Total Conversion ◽  
Basic Properties ◽  
Product Composition ◽  
Conversion Level ◽  
Integral Reactor ◽  
Low Activity ◽  
High Conversion Level

Acetone transformation catalyzed by HZSM-5 and NaZSM-5 zeolites and by zeolites modified with basic oxides was studied in an integral reactor at a temperature of 350 °C. Modification of acido-basic properties of ZSM-5 zeolites resulted both in the total conversion changes and in the essential changes in the product composition. Isobutene was found to be the main product over HZSM-5 zeolites exhibiting low activity, while aromatics prevailed when high conversion level was attained. Classical condensation of acetone yielding mesityloxide and phorones was observed over NaZSM-5 zeolites impregnated with CaO and ZnO.

scholarly journals Design and experimental demonstration of a high conversion efficiency OPCPA pre-amplifier for petawatt laser facility

2018 ◽  
Vol 6 ◽  
Author(s):  
Xiao Liang ◽  
Xinglong Xie ◽  
Jun Kang ◽  
Qingwei Yang ◽  
Hui Wei ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Nonlinear Crystal ◽  
Beam Quality ◽  
Pump Energy ◽  
High Conversion ◽  
Signal Pulse ◽  
High Conversion Efficiency ◽  
Optical Parametric ◽  
Good Beam Quality ◽  
Laser Facility

We present the design and experiment of a broadband optical parametric chirped-pulse amplifier (OPCPA) which provides high conversion efficiency and good beam quality at 808 nm wavelength. Using a three-dimensional spatial and temporal numerical model, several design considerations necessary to achieve high conversion efficiency, good beam quality and good output stability are discussed. To improve the conversion efficiency and broaden the amplified signal bandwidth simultaneously, the nonlinear crystal length and OPCPA parameters are analyzed and optimized with the concept of dissipating amplified idler between optical parametric amplification (OPA) of two crystals configuration. In the experiment, an amplifier consisting of two OPCPA stages of ‘L’ type configuration was demonstrated by using the optimized parameters. An amplified signal energy of 160 mJ was achieved with a total pump-to-signal efficiency of 35% (43% efficiency for the OPCPA stage 2). The output bandwidth of signal pulse reached 80 nm and the signal pulse was compressed to 24 fs. The energy stability reached 1.67% RMS at 3% pump energy variation. The optimized OPCPA amplifier operates at a repetition rate of 1 Hz and is used as a front-end injection for the main amplifier of SG-II 5PW laser facility.

Progressing arthrosis and a high conversion rate 11 (4–19) years after four corner fusion

2021 ◽  
pp. 1-7
Author(s):  
Ole Reigstad ◽  
Trygve Holm-Glad ◽  
Preben Dovland ◽  
Johanne Korslund ◽  
Christian Grimsgaard ◽  
...  
Keyword(s):  
Conversion Rate ◽  
High Conversion ◽  
High Conversion Rate
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