Results 51 to 60 of about 287,902 (268)

Generating random density matrices

, 2011
We study various methods to generate ensembles of random density matrices of a fixed size N, obtained by partial trace of pure states on composite systems.
Armstrong D., Benoît Collins, Bures D. J. C., Erdélyi A., Forrester J. P., Hayashi M., Hiai F., Ion Nechita, Karol A. Penson, Karol Życzkowski, Marchenko V. A., Mehta M. L., Młotkowski W., Voiculescu D. V.   +13 more
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

Comparing the Performance of Robust Controllers for Vibration Suppression in Long Rotor Systems

Acoustics
In this paper, the vibration control of the multivariable model of rotor bearing systems is considered for investigation. Some simply structured controllers that can suppress vibrational disturbances are tested for their robustness via the H∞ optimality ...
Majid Aleyaasin
doaj   +1 more source

Adaptive robust control of longitudinal and transverse electron beam profiles

Physical Review Accelerators and Beams, 2016
Feedback control of the longitudinal and transverse electron beam profiles are considered to be critical for beam control in accelerators. In the feedback scheme, the longitudinal or transverse beam profile is measured and compared to a desired profile ...
Amin Rezaeizadeh, Thomas Schilcher, Roy S. Smith   +2 more
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

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Deep Text Mining for Automatic Keyphrase Extraction from Text Documents

Journal of Intelligent Systems, 2011
Due to existence of a huge amount of textual data either on the World Wide Web or in textual databases like PubMed, the development of novel automatic keyphrase extraction methods has emerged as one of the key research problems in recent past ...
Abulaish Muhammad, Jahiruddin, Dey Lipika   +2 more
doaj   +1 more source

Juventude: entre o Preço do Consumo e o Valor do Compromisso

Revista Educação e Cultura Contemporânea, 2018
O perfil da juventude, no contexto do século atual é multifacetado. Percebem-se, entre algumas configurações familiares, organizações sociais ou movimentos culturais uma manifestação de esperança para mudar algumas dinâmicas sociais, dedicando-se ...
Idalberto José das Neves Júnior, Luiz Síveres, Paulo César Nodari   +2 more
doaj   +1 more source

A new formula for the structured singular value [PDF]

1985 24th IEEE Conference on Decision and Control, 1985
The concept of structured singular value was recently introduced by Doyle as a tool for analysis and synthesis of feedback systems with structured uncertainties. It is a key to the design of control systems under joint robustness and performance specifications and it nicely complements the H? approach to control system design.
Michael K. H. Fan, Andre L. Tits
openaire   +1 more source

YlmG1 is localized exclusively to the chloroplast envelope membrane and is involved in preprotein translocation in Arabidopsis thaliana

FEBS Open Bio, EarlyView.
Cytosolically synthesized chloroplast preproteins are translocated across the outer and inner envelope membranes through translocons called TOC and TIC, respectively. In green algae and plants, the TIC core is composed of essential membrane proteins, Tic12, Tic20, and Tic214.
Mengyi Li, Xueyang Zhao, Masato Nakai
wiley   +1 more source