29 results match your criteria: "University of Nizhniy Novgorod[Affiliation]"
Nonlinear Dyn
September 2024
Department of Mathematics, University College London, London, UK.
Time series is a data structure prevalent in a wide range of fields such as healthcare, finance and meteorology. It goes without saying that analyzing time series data holds the key to gaining insight into our day-to-day observations. Among the vast spectrum of time series analysis, time series classification offers the unique opportunity to classify the sequences into their respective categories for the sake of automated detection.
View Article and Find Full Text PDFSensors (Basel)
December 2024
Research and Educational Center for Physics of Solid State Nanostructures of Lobachevsky State University of Nizhniy Novgorod, 603950 Nizhniy Novgorod, Russia.
This paper proposes and implements a novel scheme for recording signals from fibre optic sensors based on tandem low-coherence interferometry with an integrated optical reference interferometer. The circuit allows precision control of the phase shift. Additionally, the paper illustrates the potential for detecting vibration and object deformation using fibre optic Fabry-Perot sensors connected to the registration system.
View Article and Find Full Text PDFFront Neural Circuits
November 2024
Laboratory of Electrophysiology, Federal Center of Brain Research and Neurotechnologies, Moscow, Russia.
Over the past three decades, a great deal of attention has been paid to the study of perisomatic inhibition and perisomatic inhibitory basket cells. A growing body of experimental evidence points to the leading role of perisomatic inhibitory cells in the generation of oscillatory activity in various frequency ranges. Recently the link between the activity of basket cells and complex behavior has been demonstrated in several laboratories.
View Article and Find Full Text PDFInt J Mol Sci
May 2024
A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119334, Russia.
The development of photocurable compositions is in high demand for the manufacture of functional materials for electronics, optics, medicine, energy, etc. The properties of the final photo-cured material are primarily determined by the initial mixture, which needs to be tuned for each application. In this study we propose to use simple systems based on di(meth)acrylate, polyimide and photoinitiator for the preparation of new photo-curable compositions.
View Article and Find Full Text PDFMol Psychiatry
July 2024
Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, 69120, Heidelberg, Germany.
Long-term memories are believed to be encoded by unique transcriptional signatures in the brain. The expression of immediate early genes (IEG) promotes structural and molecular changes required for memory consolidation. Recent evidence has shown that the brain is equipped with mechanisms that not only promote, but actively constrict memory formation.
View Article and Find Full Text PDFMolecules
June 2023
Department of Chemistry, Lobachevsky State University of Nizhniy Novgorod, Gagarin Avenue 23, 603022 Nizhniy Novgorod, Russia.
The paper analyzes the relationships among acid-base interactions in various oxide systems and their thermodynamics. Extensive data on enthalpies of solution of binary oxides in oxide melts of several compositions, obtained by high-temperature oxide melt solution calorimetry at 700 and 800 °C, are systematized and analyzed. Oxides with low electronegativity, namely the alkali and alkaline earth oxides, which are strong oxide ion donors, show enthalpies of solution that have negative values greater than -100 kJ per mole of oxide ion.
View Article and Find Full Text PDFFront Immunol
October 2022
Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom.
Background: The systemic inflammatory response post-SARS-CoV-2 infection increases pro-inflammatory cytokine production, multi-organ damage, and mortality rates. Mast cells (MC) modulate thrombo-inflammatory disease progression (, deep vein thrombosis) and the inflammatory response post-infection.
Objective: To enhance our understanding of the contribution of MC and their proteases in SARS-CoV-2 infection and the pathogenesis of the disease, which might help to identify novel therapeutic targets.
Materials (Basel)
December 2021
Materials Science Department, Physical-Technical Research Institute, Lobachevsky State University of Nizhniy Novgorod, 603022 Nizhny Novgorod, Russia.
Thermal stability of composite bimetallic wires from five novel microalloyed aluminum alloys with different contents of alloying elements (Zr, Sc, and Hf) is investigated. The alloy workpieces were obtained by induction-casting in a vacuum, preliminary severe plastic deformation, and annealing providing the formation of a uniform microstructure and the nucleation of stabilizing intermetallide Al(Zr,Sc,Hf) nanoparticles. The wires of 0.
View Article and Find Full Text PDFMaterials (Basel)
December 2021
Materials Science Department, Physical-Technical Research Institute, Lobachevsky State University of Nizhniy Novgorod, 603022 Nizhny Novgorod, Russia.
Effect of preliminary precipitation of AlSc particles on the characteristics of superplastic conductor Al-0.5%Mg-X%Sc (X = 0.2, 0.
View Article and Find Full Text PDFZootaxa
September 2021
Department of Ecology, Institute of Biology and Biomedicine, Lobachevsky State University of Nizhniy Novgorod, Gagarin Avenue 23, Nizhniy Novgorod 603950, Russia..
A detailed study of morphology of the rare phytophilous cladoceran Camptocercus lilljeborgi Schoedler, 1862 revealed that populations from Eastern Siberia and Far East of Russia belong to a new species. C. smirnovi sp.
View Article and Find Full Text PDFFront Immunol
September 2021
Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia.
Background: Prediction of the severity of COVID-19 at its onset is important for providing adequate and timely management to reduce mortality.
Objective: To study the prognostic value of damage parameters and cytokines as predictors of severity of COVID-19 using an extensive immunologic profiling and unbiased artificial intelligence methods.
Methods: Sixty hospitalized COVID-19 patients (30 moderate and 30 severe) and 17 healthy controls were included in the study.
Int J Mol Sci
May 2021
Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, " Institute of Cell Biophysics of the Russian Academy of Sciences, 142290 Pushchino, Russia.
Br J Cancer
March 2020
Department of Women's Cancer, Institute for Women's Health, University College London, Gower Street, London, WC1E 6BT, UK.
Background: Ovarian cancer has a poor survival rate due to late diagnosis and improved methods are needed for its early detection. Our primary objective was to identify and incorporate additional biomarkers into longitudinal models to improve on the performance of CA125 as a first-line screening test for ovarian cancer.
Methods: This case-control study nested within UKCTOCS used 490 serial serum samples from 49 women later diagnosed with ovarian cancer and 31 control women who were cancer-free.
Dalton Trans
July 2019
G. A. Razuvaev Institute of Organometallic Chemistry of RAS, 49 Tropinina str., GSP-445, 603950 Nizhniy Novgorod, Russia.
A square-planar bis-o-semiquinonato nickel complex interacts with N,N'-disubstituted 1,4-diazabutadienes-1,3 forming six-coordinate compounds. The X-ray structural study indicates complex geometry to be close to the octahedral. Magnetic properties are determined by metal-ligand ferromagnetic exchange interactions which are promoted by complex geometry.
View Article and Find Full Text PDFEntropy (Basel)
April 2019
Department of Mathematics, University College London, London WC1E 6BT, UK.
Intercellular communication and its coordination allow cells to exhibit multistability as a form of adaptation. This conveys information processing from intracellular signaling networks enabling self-organization between other cells, typically involving mechanisms associated with cognitive systems. How information is integrated in a functional manner and its relationship with the different cell fates is still unclear.
View Article and Find Full Text PDFArch Biochem Biophys
September 2018
Institute of Cell Biophysics, Russian Academy of Sciences, Russia. Electronic address:
The Sip1 mutation plays the main role in pathogenesis of the Mowat-Wilson syndrome, which is characterized by the pronounced epileptic symptoms. Cortical neurons of homozygous mice with Sip1 mutation are resistant to AMPA receptor activators. Disturbances of the excitatory signaling components are also observed on such a phenomenon of neuroplasticity as hypoxic preconditioning.
View Article and Find Full Text PDFNeurosci Lett
May 2017
Institute of Biology and Biomedicine, Lobachevsky State University of Nizhniy Novgorod, Russia; Institute of Cell Biophysics, Russian Academy of Sciences, Russia. Electronic address:
Smad-interacting protein-1 (Sip1) [Zinc finger homeobox (Zfhx1b), Zeb2] is a transcription factor implicated in the genesis of Mowat-Wilson syndrome (MWS) in humans. MWS is a rare genetic autosomal dominant disease caused by a mutation in the Sip1 gene (aka Zeb2 or Zfhx1b) mapped to 2q22.3 locus.
View Article and Find Full Text PDFEssays Biochem
November 2016
Department of Control Theory and Systems Dynamics, Lobachevsky State University of Nizhniy Novgorod, Novgorod, Russia.
The design of synthetic gene networks (SGNs) has advanced to the extent that novel genetic circuits are now being tested for their ability to recapitulate archetypal learning behaviours first defined in the fields of machine and animal learning. Here, we discuss the biological implementation of a perceptron algorithm for linear classification of input data. An expansion of this biological design that encompasses cellular 'teachers' and 'students' is also examined.
View Article and Find Full Text PDFPhysica D
April 2016
Lobachevsky State University of Nizhniy Novgorod, Prospekt Gagarina 23, 603950 Nizhniy Novgorod, Russia.
We propose and study models of two distributed synthetic gene circuits, toggle-switch and oscillator, each split between two cell strains and coupled via quorum-sensing signals. The distributed toggle switch relies on mutual repression of the two strains, and oscillator is comprised of two strains, one of which acts as an activator for another that in turn acts as a repressor. Distributed toggle switch can exhibit mobile fronts, switching the system from the weaker to the stronger spatially homogeneous state.
View Article and Find Full Text PDFJ Theor Biol
September 2016
Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia; Shirshov Institute of Oceanology, Moscow, Russia. Electronic address:
Diel vertical migration (DVM) of zooplankton is a widespread phenomenon in both oceans and lakes, and is generally considered to be the largest synchronized movement of biomass on Earth. Most existing mathematical models of DVM are based on the assumption that animals maximize a certain criterion such as the expected reproductive value, the venturous revenue, the ratio of energy gain/mortality or some predator avoidance function when choosing their instantaneous depth. The major shortcoming of this general point of view is that the predicted DVM may be strongly affected by a subjective choice of a particular optimization criterion.
View Article and Find Full Text PDFPLoS One
February 2016
Department of Mathematics, University College London, London, UK; Institute for Women's Health, University College London, London, UK; Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia.
Similar to intelligent multicellular neural networks controlling human brains, even single cells, surprisingly, are able to make intelligent decisions to classify several external stimuli or to associate them. This happens because of the fact that gene regulatory networks can perform as perceptrons, simple intelligent schemes known from studies on Artificial Intelligence. We study the role of genetic noise in intelligent decision making at the genetic level and show that noise can play a constructive role helping cells to make a proper decision.
View Article and Find Full Text PDFPLoS One
April 2016
Department of Bioinformatics, Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia.
For practical construction of complex synthetic genetic networks able to perform elaborate functions it is important to have a pool of relatively simple modules with different functionality which can be compounded together. To complement engineering of very different existing synthetic genetic devices such as switches, oscillators or logical gates, we propose and develop here a design of synthetic multi-input classifier based on a recently introduced distributed classifier concept. A heterogeneous population of cells acts as a single classifier, whose output is obtained by summarizing the outputs of individual cells.
View Article and Find Full Text PDFBiophys J
March 2015
Institute for Women's Heaalth, University College London, London, United Kingdom; Department of Mathematics, University College London, London, United Kingdom; Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia. Electronic address:
Phys Rev E Stat Nonlin Soft Matter Phys
March 2014
Department of Mathematics, University College London, United Kingdom and Institute for Women's Health, University College London, United Kingdom and Department of Mathematics, King AbdulAziz University, Jeddah, Saudi Arabia and Lobachevsky State University of Nizhniy Novgorod, Nizhniy Novgorod, Russia.
Intracellular genetic networks are more intelligent than was first assumed due to their ability to learn. One of the manifestations of this intelligence is the ability to learn associations of two stimuli within gene-regulating circuitry: Hebbian-type learning within the cellular life. However, gene expression is an intrinsically noisy process; hence, we investigate the effect of intrinsic and extrinsic noise on this kind of intracellular intelligence.
View Article and Find Full Text PDFPhys Rev Lett
December 2011
Theory of Oscillations Department, University of Nizhniy Novgorod, Nizhniy Novgorod, Russia.
In linear disordered systems Anderson localization makes any wave packet stay localized for all times. Its fate in nonlinear disordered systems (localization versus propagation) is under intense theoretical debate and experimental study. We resolve this dispute showing that, unlike in the common hypotheses, the answer is probabilistic rather than exclusive.
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