Results 101 to 110 of about 2,355,604 (311)

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Side-Scan Sonar Image Generator Based on Diffusion Models for Autonomous Underwater Vehicles

open access: yesJournal of Marine Science and Engineering
In the field of underwater perception and detection, side-scan sonar (SSS) plays an indispensable role. However, the imaging mechanism of SSS results in slow information acquisition and high complexity, significantly hindering the advancement of ...
Feihu Zhang   +4 more
doaj   +1 more source

An Iterative Kalman Filter with Reduced-Biased Kalman Gain for Single Channel Speech Enhancement in Non-stationary Noise Condition

open access: yes, 2019
This paper presents an iterative Kalman filter (IT-KF) with a reduced-biased Kalman gain for single channel speech enhancement in Non-stationary Noise Conditions (NNCs).
Roy, Sujan Kumar, Paliwal, Kuldip K
core   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials [PDF]

open access: yesRadioengineering, 2016
To reduce the radar cross section of a waveguide slot antenna, a three-layer metamaterial is presented based on orthogonal double split-ring resonators. The absorption characteristics of three-layer metamaterial are demonstrated by simulation.
Qiang Fu   +4 more
doaj  

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Reverberation enhancement for small rooms

open access: yes, 2012
Reverberation enhancement is a technology which allows the reverberation time of a room to be increased through the use of an electronic system. These systems have traditionally been applied to improve the acoustics of large concert halls but the ...
Hopper, Hugh
core   +1 more source

HUMAN ENHANCEMENT

open access: yes, 2009
Acknowledgements -- Introduction -- Human enhancement ethics: the state of the debate / Nick Bostrom and Julian Savulescu -- Pt. I. Human enhancement in general -- 1. Can anyone really be talking about ethically modifying human nature?

core  

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation. [PDF]

open access: yesLight Sci Appl, 2023
Kim I   +10 more
europepmc   +1 more source

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