Results 61 to 70 of about 1,689,649 (265)

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

Космос и природа в сочинениях протопопа Аввакума

open access: yesRevue des études slaves
This paper considers archpriest Avvakum’s notions about nature and the cosmos in the light of the two cosmological models, which co-existed in Russian culture in the Seventeenth century.
Olga Čadajeva
doaj   +1 more source

Spišský Hrhov as an example of the complexity of relations between Roma and non-Roma on the local level [PDF]

open access: yesAnnales Scientia Politica, 2018
The paper focuses on the presentation and analysis of activities aimed at improving the situation of the Romani community in Spišský Hrhov. We point out and explain that the conditions faced by local Roma cannot be perceived as ideal; that the whole ...
Alexander Mušinka
doaj  

Magnetic hysteresis of an artificial square ice studied by in-plane Bragg x-ray resonant magnetic scattering

open access: yesAIP Advances, 2012
We report X-ray resonant magnetic scattering studies of a Permalloy artificial square ice nanomagnet array, focussing on the field-driven evolution of the sum Σ and difference Δ signals of left and right handed circularly polarized synchrotron X-rays at ...
J. P. Morgan   +7 more
doaj   +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

ABL kinase‐dependent phosphorylation of SH proteins promotes their direct interaction with CRK family SH2 domains

open access: yesFEBS Letters, EarlyView.
CT10 regulator of kinase (CRK) and CRK‐Like (CRKL) are signaling adaptors driving cell adhesion, motility, differentiation, and proliferation. SH2‐domain containing (SH) proteins are enriched in YXXP motifs which when phosphorylated create preferred binding sites for CRK family SH2 domains.
Phoebe M. Cousens   +8 more
wiley   +1 more source

Tunable exciton valley-pseudospin orders in moiré superlattices

open access: yesNature Communications
Excitons in two-dimensional (2D) semiconductors have offered an attractive platform for optoelectronic and valleytronic devices. Further realizations of correlated phases of excitons promise device concepts not possible in the single particle picture ...
Richen Xiong   +11 more
doaj   +1 more source

An improved Dijkstra cross-plane image encryption algorithm based on a chaotic system

open access: yesFrontiers in Artificial Intelligence
While encrypting information with color images, most encryption schemes treat color images as three different grayscale planes and encrypt each plane individually. These algorithms produce more duplicated operations and are less efficient because they do
Pijun Hou   +3 more
doaj   +1 more source

Direct Visualization of the Nematic Superconductivity in Cu_{x}Bi_{2}Se_{3}

open access: yesPhysical Review X, 2018
Cu_{x}Bi_{2}Se_{3} hosts both topological surface states and bulk superconductivity. It has been identified recently as a topological superconductor (TSC) with an extraordinary nematic, i.e., C_{2}-symmetric superconducting state and odd-parity pairing ...
Ran Tao   +7 more
doaj   +1 more source

MEMS Deformable Mirrors for Space-Based High-Contrast Imaging

open access: yesMicromachines, 2019
Micro-Electro-Mechanical Systems (MEMS) Deformable Mirrors (DMs) enable precise wavefront control for optical systems. This technology can be used to meet the extreme wavefront control requirements for high contrast imaging of exoplanets with coronagraph
Rachel E. Morgan   +19 more
doaj   +1 more source

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