scholarly journals Exploring Subunit Communication of Malate Dehydrogenase through Interface Point‐ Mutations

2018 ◽  
Vol 32 (S1) ◽  
Author(s):  
Michael Schwabe ◽  
Sharon Shania ◽  
Nina Marie Garcia ◽  
Sasha Graham ◽  
Ellis Bell
Keyword(s):  
Malate Dehydrogenase ◽  
Point Mutations ◽  
Interface Point ◽  
Subunit Communication

scholarly journals Structural Separation to Create Competition? The Case of Freight Railways

2005 ◽  
Vol 4 (3) ◽  
Author(s):  
Russell Pittman
Keyword(s):  
Vertical Integration ◽  
Economies Of Scale ◽  
Vertical Separation ◽  
The Third ◽  
Interface Point ◽  
Network Costs ◽  
High Share ◽  
Structural Separation

The freight railways sector has three attributes that have proved problematic for recent experiments with vertical separation: a) a relatively high share of network costs in total delivered service costs, b) an apparent persistence of economies of scale at the "competitive" train operations level, and, perhaps most important, c) strong economies of vertical integration that are focused on the interface point of wheel and rail – that is, exactly where vertical separation takes place. The third factor in particular seems a clear illustration of the rationales discussed by Coase and Williamson for the broad vertical scope of a single firm and the disadvantages of relying on market transactions under certain conditions.

scholarly journals An interface point-mutation variant of triosephosphate isomerase is compactly folded and monomeric at low protein concentrations

FEBS Letters ◽  
1995 ◽  
Vol 367 (3) ◽  
pp. 315-318 ◽  
Author(s):  
T.V. Borchert ◽  
J.Ph. Zeelen ◽  
W. Schliebs ◽  
M. Callens ◽  
W. Minke ◽  
...  
Keyword(s):  
Point Mutation ◽  
Triosephosphate Isomerase ◽  
Low Protein ◽  
Interface Point

scholarly journals Identification of Three-Phase Grid Impedance in the Presence of Parallel Converters

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2674 ◽  
Author(s):  
Roni Luhtala ◽  
Tuomas Messo ◽  
Tomi Roinila ◽  
Henrik Alenius ◽  
Erik de Jong ◽  
...  
Keyword(s):  
Internal Control ◽  
Hardware In The Loop ◽  
Control Performance ◽  
Control Functions ◽  
Grid Interface ◽  
Interface Point ◽  
Three Phase ◽  
Grid Impedance ◽  
Voltage Support ◽  
Parallel Converters

Grid impedance is an important parameter which affects the control performance of grid-connected power converters. Several methods already exist for optimizing the converter control system based on knowledge of grid impedance value. Grid impedance may change rapidly due to fault or disconnection of a transmission line. Therefore, online grid identification methods have been recently proposed to have up-to-date information about the grid impedance value. This is usually done by perturbing the converter output current and measuring the response in output voltage. However, any parallel converters connected to the same interface point will cause errors, since the measured current differs from the current that is flowing through the grid interface point. This paper points out challenges and errors in grid impedance identification, caused by parallel converters and their internal control functions, such as grid-voltage support. Experimental grid-impedance measurements are shown from the power hardware-in-the-loop setup developed at DNV-GL Flexible Power Grid Lab.

scholarly journals Solutions of initial value problems for a pair of linear first order ordinary differential systems with interface-spatial conditions

1996 ◽  
Vol 9 (3) ◽  
pp. 303-314
Author(s):  
M. Venkatesulu ◽  
Pallav Kumar Baruah
Keyword(s):  
Initial Value Problems ◽  
Initial Value ◽  
Differential Systems ◽  
First Order ◽  
Interface Point ◽  
The Common

Solutions of initial value problems associated with a pair of ordinary differential systems (L1,L2) defined on two adjacent intervals I1 and I2 and satisfying certain interface-spatial conditions at the common end (interface) point are studied.

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