Results 51 to 60 of about 821,688 (312)

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Target Detection Algorithm Based on Two Layers Human Visual System

Algorithms, 2015
Robust small target detection of low signal-to-noise ratio (SNR) is very important in infrared search and track applications for self-defense or attacks.
Zheng Cui, Jingli Yang, Shouda Jiang, Changan Wei   +3 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Visible Watermarking Assessment Metrics Based on Just Noticeable Distortion

IEEE Access, 2018
During the last two decades, several visible watermarking algorithms with different characteristics have been proposed. In the context of visible digital watermarking, watermark visibility and its non-obtrusiveness are essential issues.
Eduardo Fragoso-Navarro, Manuel Cedillo-Hernandez, Mariko Nakano-Miyatake, Antonio Cedillo-Hernandez, Hector Manuel Perez-Meana   +4 more
doaj   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Attentional load and sensory competition in human vision: Modulation of fMRI responses by load fixation during task-irrelevant stimulation in the peripheral visual field.

, 2005
Perceptual suppression of distractors may depend on both endogenous and exogenous factors, such as attentional load of the current task and sensory competition among simultaneous stimuli, respectively. We used functional magnetic resonance imaging (fMRI)
Schwartz, S., Veilleumier, P., Driver, Jon, Driver, J., Angelo Maravita, Dolan, R. ; https://orcid.org/, Vuilleumier, Patrik, Maravita, A., Dolan, R. J., Jon Driver, Maravita, Angelo, Dolan, R.J., Patrik Vuilleumier, Hutton, Chloe, Vuilleumier, P., Raymond J. Dolan, Schwartz, Sophie, Sophie Schwartz, Hutton, C., Chloe Hutton   +19 more
core   +2 more sources

Entropy Based Data Expansion Method for Blind Image Quality Assessment

Entropy, 2019
Image quality assessment (IQA) is a fundamental technology for image applications that can help correct low-quality images during the capture process. The ability to expand distorted images and create human visual system (HVS)-aware labels for training ...
Xiaodi Guan, Lijun He, Mengyue Li, Fan Li   +3 more
doaj   +1 more source

A neural system for human visual working memory [PDF]

Proceedings of the National Academy of Sciences, 1998
Working memory is the process of actively maintaining a representation of information for a brief period of time so that it is available for use. In monkeys, visual working memory involves the concerted activity of a distributed neural system, including posterior areas in visual cortex and anterior areas in prefrontal cortex. Within visual cortex,
L. G. Ungerleider, S. M. Courtney, Haxby, James Van Loan   +2 more
openaire   +3 more sources

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

FEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas, Brigitta Maruzs, Zsófia E. Kálmán, Tomas Klumpler, Gyula Batta, Bálint Péterfia, Zoltán Gáspári   +6 more
wiley   +1 more source

Plasticity and Stability of the Visual System in Human Achiasma [PDF]

Neuron, 2012
The absence of the optic chiasm is an extraordinary and extreme abnormality in the nervous system. The abnormality produces highly atypical functional responses in the cortex, including overlapping hemifield representations and bilateral population receptive fields in both striate and extrastriate visual cortex.
Hoffmann, MB, Kaule, FR, Levin, N, Masuda, Y, Kumar, A, Gottlob, I, Horiguchi, H, Dougherty, RF, Stadler, J, Wolynski, B, Speck, O, Kanowski, M, Liao, YJ, Wandell, BA, Dumoulin, SO   +14 more
openaire   +5 more sources