Results 81 to 90 of about 1,914,645 (291)

The leading Ruelle resonances of chaotic maps

open access: yes, 2000
The leading Ruelle resonances of typical chaotic maps, the perturbed cat map and the standard map, are calculated by variation. It is found that, excluding the resonance associated with the invariant density, the next subleading resonances are ...
A.V. Andreev   +19 more
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

ARCHAEOLOGICAL MONUMENTS OF VOLGA BOLGARIA In TRANS-KAMA REGION OF THE REPUBLIC OF TATARSTAN IN GEOINFORMATION SYSTEMS

open access: yesАрхеология евразийских степей
The paper presents a map of Volga Bolgaria sites in Zakamye (Trans-Kama region) of Tatarstan, compiled as a result of digitalization of available data. The map of archeological sites of Volga-Kama Bolgaria (X – fi rst half of XV century) by Fakhrutdinov ...
Gulnur Kh. Zaripova
doaj   +1 more source

A High-Density Crowd Counting Method Based on Convolutional Feature Fusion

open access: yesApplied Sciences, 2018
In recent years, the trampling events due to overcrowding have occurred frequently, which leads to the demand for crowd counting under a high-density environment. At present, there are few studies on monitoring crowds in a large-scale crowded environment,
Hongling Luo   +6 more
doaj   +1 more source

Central limit behavior of deterministic dynamical systems

open access: yes, 2007
We investigate the probability density of rescaled sums of iterates of deterministic dynamical systems, a problem relevant for many complex physical systems consisting of dependent random variables.
A. Ya. Khinchin   +5 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Tracing spiral density waves in M81

open access: yes, 2008
We use SPITZER IRAC 3.6 and 4.5micron near infrared data from the Spitzer Infrared Nearby Galaxies Survey (SINGS), optical B, V and I and 2MASS Ks band data to produce mass surface density maps of M81. The IRAC 3.6 and 4.5micron data, whilst dominated by
Bell   +68 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Crowd counting in intelligent video surveillance systems

open access: yesРадіоелектронні і комп'ютерні системи
This study focuses on enhancing the accuracy and robustness of crowd counting in intelligent video surveillance systems by incorporating perspective-awareness into deep learning models.
Ruslan Dobryshev   +3 more
doaj   +1 more source

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