Enzyme catalysis: Transition structures and quantum dynamical aspects: Modeling rubisco's oxygenation and carboxylation mechanisms

2002 ◽  
Vol 88 (1) ◽  
pp. 154-166 ◽  
Author(s):  
O. Tapia ◽  
Henk Fidder ◽  
Vicent S. Safont ◽  
Mónica Oliva ◽  
Juan Andrés
Keyword(s):  
Enzyme Catalysis ◽  
Quantum Dynamical ◽  
Transition Structures

Transition structures for hydride transfer reactions in vacuo and their role in enzyme catalysis

1996 ◽  
Vol 371 ◽  
pp. 299-312 ◽  
Author(s):  
J. Andrés ◽  
V. Moliner ◽  
V.S. Safont ◽  
J.M. Aulló ◽  
W. Díaz ◽  
...  
Keyword(s):  
Enzyme Catalysis ◽  
Hydride Transfer ◽  
Transfer Reactions ◽  
Transition Structures ◽  
Hydride Transfer Reactions

Dihydrofolate Reductase as a Model for Enzyme Catalysis

2015 ◽  
Vol 4 (2) ◽  
pp. 77-86 ◽  
Author(s):  
Kevin Francis ◽  
Amnon Kohen
Keyword(s):  
Dihydrofolate Reductase ◽  
Enzyme Catalysis

scholarly journals A balanced-to-balanced directional coupler based on branch-slotline coupled structure

Frequenz ◽  
2020 ◽  
Vol 74 (11-12) ◽  
pp. 427-433
Author(s):  
Yaxin Liu ◽  
Feng Wei ◽  
Xiaowei Shi ◽  
Cao Zeng
Keyword(s):  
Directional Coupler ◽  
Return Loss ◽  
Design Method ◽  
Differential Mode ◽  
Arbitrary Power ◽  
Measurement Results ◽  
Transition Structures ◽  
Coupled Structures ◽  
Better Than ◽  
Good Agreement

AbstractIn this paper, a balanced-to-balanced (BTB) branch-slotline directional coupler (DC) is firstly presented, which can realize an arbitrary power division ratios (PDRs). The coupler is composed by microstrip-to-slotline (MS) transition structures and branch-slotline coupled structures. The single-ended to balanced-ended conversion is simplified and easy to implemented by the MS transition structures, which intrinsically leads to the differential-mode (DM) transmission and common-mode (CM) suppression. Moreover, the different PDRs which are controlled by the widths of branch-slotlines can be achieved. In order to verify the feasibility of the proposed design method, two prototype circuits of the proposed coupler with different PDRs are fabricated and measured. The return loss and the isolation of two designs are all better than 10 dB. Moreover, the CM suppressions are greater than 35 dB. A good agreement between the simulation and measurement results is observed.

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