Results 61 to 70 of about 4,227,869 (356)

Development of the Phaseless Calibration Algorithm for a Digital Antenna Array

Inventions, 2023
In this paper, we will discuss a calibration algorithm for a digital antenna array that diagnoses its real performance. It can be applied at such stages of the antenna system life cycle as design, tuning, and especially maintenance.
Elena Dobychina, Mikhail Snastin, Vladimir Savchenko, Timofey Shevgunov   +3 more
doaj   +1 more source

Event-by-event simulation of the Hanbury Brown-Twiss experiment with coherent light [PDF]

, 2009
We present a computer simulation model for the Hanbury Brown-Twiss experiment that is entirely particle-based and reproduces the results of wave theory.
De Raedt, H., Jin, F., Michielsen, K.
core   +3 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Experimental and Theoretical Investigations of the Mechanical Behavior of Column-Free Quasi-Rectangular Segmental Tunnel Linings

Applied Sciences
To investigate the mechanical behavior and design methodology of column-free QRST (quasi-rectangular segmental tunnel) structures, a theoretical analysis based on prototype experiments and simulation models is conducted.
Zhen Liu, Yizheng Chen, Yuebin Wu, Xian Liu   +3 more
doaj   +1 more source

Modeling the train operation of the mainline locomotive

Вестник Научно-исследовательского института железнодорожного транспорта, 2018
To date, there is a large number of programs that simulate the train operation of the locomotive using the method of traction calculations. As input data in the program, information is entered about the track section, locomotive and train composition ...
A. G. Silyuta, E. E. Kossov
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

PBPK modeling: What is the role of CYP3A4 expression in the gastrointestinal tract to accurately predict first‐pass metabolism?

CPT: Pharmacometrics & Systems Pharmacology
Gastrointestinal first‐pass metabolism plays an important role in bioavailability and in drug–drug interactions. Physiologically‐based pharmacokinetic (PBPK) modeling is a powerful tool to integrate these processes mechanistically.
Justine Henriot, André Dallmann, François Dupuis, Jérémy Perrier, Sebastian Frechen   +4 more
doaj   +1 more source

Space Charge Modelling in Solid Dielectrics under High Electric Field Based on Double Charge Injection Model [PDF]

, 2005
Present study aims to develop a clear insight on factors that influence space charge dynamics in solid dielectrics through a numerical simulation. The model used for the simulation is proposed by Alison and Hill [1] which describes charge dynamics as a ...
Chen, G, Loi, S H
core   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Variance in System Dynamics and Agent Based Modelling Using the SIR Model of Infectious Disease [PDF]

, 2012
Classical deterministic simulations of epidemiological processes, such as those based on System Dynamics, produce a single result based on a fixed set of input parameters with no variance between simulations. Input parameters are subsequently modified on
Ahmed, Aslam, Aickelin, Uwe, Greensmith, Julie   +2 more
core   +4 more sources