Algorithm of constructing methods of application of renewable sources of energy at recreational objects Алгоритм построения методики применения возобновляемых источников энергии на рекреационных объектах

The article develops an algorithm of assessment of potential of use of renewable sources of energy with the aim to cover needs of recreational objects. The article reveals scientific principles of transformation of the power system and recreational economy of the Crimea on the basis of a wider application of the renewable sources of energy, including the solar one, in the result of which the situation in the region will change: ecological situation will improve, power independence of recreational objects will increase, and probability of man-caused catastrophes will reduce. The article considers results of practical introduction of scientific developments in the sphere of application of renewable sources of energy at recreational objects and offers a logical scheme of the algorithm of construction of methods of application of renewable sources of energy at recreational objects, which include four main stages. Each of the stages and items of the algorithm requires further detalisation and methodical development.Целью статьи является разработка алгоритма оценки перспективности использования возобновляемых источников энергии с целью покрытия нужд рекреационных объектов. В данной статье раскрываются научные принципы преобразования энергетики и рекреационного хозяйства Крыма на базе более широкого использования возобновляемых источников энергии, в том числе и солнечной, в результате которого изменится ситуация в регионе: улучшится экологическая ситуация, повысится энергонезависимость рекреационных объектов, снизится вероятность техногенных катастроф. На основе рассмотрения результатов практического внедрения научных разработок в сфере применения возобновляемых источников энергии на рекреационных объектах предложена логическая схема алгоритма построения методики применения возобновляемых источников энергии на рекреационных объектах, включающая в себя четыре основных этапа. Каждый из этапов и пунктов алгоритма требует дальнейшей детализации и методической проработки

Factors determining social (interpersonal) support in patients with vertebro-spinal cord injury

Objective: to study relationships between the specific features of the social network of patients with vertebro-spinal cord injury sequels (VSIS), subjectively perceived and actual social support, and social skills assessment by the patients.Patients and methods. In 2014–2015, a psychodiagnostic study was conducted in 41 VSIS patients (32 men and 9 women), including 18- to 20-year-olds (n=5), 21- to 30-year-olds (n=18), 31- to 40-year-olds (n=9), 41- to 50-year-olds (n=4), and patients over 50 years of age (n=5). Paraplegia (paraparesis) and tetraplegia (tetraparesis) were present in 30 and 11 patients, respectively. The duration of VSIS was 1 to 125 months. Correlations between different types of subjectively perceived and actual social support and the parameters of a social network of the patients were assessed.Results. Correlation analysis has showed that there is a need for psychotherapeutic interventions related to social network extension for patients so that the latter should have sufficient and persistent interpersonal support

CORRELATION BETWEEN HEART RHYTHM AND SYMPTOMS IN PATIENTS WITH PAROXYSMAL ATRIAL FIBRILLATION AFTER CATHETER ABLATION AND ANTIARRHYTHMIC THERAPY BASED ON DATA OBTAINED FROM IMPLANTABLE CARDIAC MONITORS

Purpose: to reveal a correlation between the symptoms and heart rhythm as well as to evaluate the incidence of symptomatic and asymptomatic paroxysmal atrial fibrillation (AF) in patients with paroxysmal AF after catheter ablation and antiarrhythmic drug therapy (AAD) through long-term observation based on data from implantable cardiac heart monitors (ICM).Materials and Methods: 92 patients with paroxysmal AF were randomly broken into two groups: 1) AF catheter ablation + ICM (Group I; n=46); 2) AAD + ICM (Group II; n=46). The data recorded by the device were matched against the symptoms diaries kept by the patients.Results: through the follow-up period (24 months), 17 (40%) patients of the catheter ablation Group and another 33 (71.8%) patients belonging to the AAD Group had AF relapse, whereas in 4 (23.5%) patients of the catheter ablation group and in 1 (3%) patients of the AAD group the paroxysms were asymptomatic. Only 30% of episodes recorded by the ICM in the AF catheter ablation + ICM Group and 78% of episodes in patients receiving AAD + ICM were found to be true AF paroxysms.Summary: the rhythm status did not match the patients’ symptoms in terms of AF, which was observed in 70% of the cases after catheter ablation and in 22% of cases in the AAD group. Asymptomatic AF was more common among the patients belonging to the catheter ablation group (23.5%) if compared to those who underwent AAD (3%). The subjective evaluation of the symptoms done by the patients regarding their arrhythmia did not reflect the true state of things related to the heart rhythm, which makes such evaluation not reliable if employed to judge the treatment efficiency

Trophic Interactions Are Key to Understanding the Effects of Global Change on the Distribution and Functional Role of the Brown Bear

Biotic interactions are expected to influence species' responses to global changes, but they are rarely considered across broad spatial extents. Abiotic factors are thought to operate at larger spatial scales, while biotic factors, such as species interactions, are considered more important at local scales within communities, in part because of the knowledge gap on species interactions at large spatial scales (i.e., the Eltonian shortfall). We assessed, at a continental scale, (i) the importance of biotic interactions, through food webs, on species distributions, and (ii) how biotic interactions under scenarios of climate and land-use change may affect the distribution of the brown bear (Ursus arctos). We built a highly detailed, spatially dynamic, and empirically sampled food web based on the energy contribution of 276 brown bear food species from different taxa (plants, vertebrates, and invertebrates) and their ensemble habitat models at high resolution across Europe. Then, combining energy contribution and predicted habitat of food species, we modelled energy contribution across space and included these layers within Bayesian-based models of the brown bear distribution in Europe. The inclusion of biotic interactions considerably improved our understanding of brown bear distribution at large (continental) scales compared with Bayesian models including only abiotic factors (climate and land use). Predicted future range shifts, which included changes in the distribution of food species, varied greatly when considering various scenarios of change in biotic factors, providing a warning that future indirect climate and land-use change are likely to have strong but highly uncertain impacts on species biogeography. Our study confirmed that advancing our understanding of ecological networks of species interactions will improve future projections of biodiversity change, especially for modelling species distributions and their functional role under climate and land-use change scenarios, which is key for effective conservation of biodiversity and ecosystem services

Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at root s=13 TeV with the ATLAS experiment

A measurement of the polarisation of $W$ bosons produced in top-quark decays is presented, using proton-proton collision data at a centre-of-mass energy of $\sqrt{s} = 13$ TeV. The data were collected by the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 139 fb$^{-1}$. The measurement is performed selecting $t\bar{t}$ events decaying into final states with two charged leptons (electrons or muons) and at least two $b$-tagged jets. The polarisation is extracted from the differential cross-section distribution of the $\cos{\theta^{*}}$ variable, where $\theta^{*}$ is the angle between the momentum direction of the charged lepton from the $W$ boson decay and the reversed momentum direction of the $b$-quark from the top-quark decay, both calculated in the $W$ boson rest frame. Parton-level results, corrected for the detector acceptance and resolution, are presented for the $\cos{\theta^{*}}$ angle. The measured fractions of longitudinal, left- and right-handed polarisation states are found to be $f_{0} = 0.684 \pm 0.005\,\mathrm{(stat.)} \pm 0.014\,\mathrm{(syst.)}$, $f_{\mathrm{L}} = 0.318 \pm 0.003\,\mathrm{(stat.)} \pm 0.008\,\mathrm{(syst.)}$ and $f_{\mathrm{R}} = -0.002 \pm 0.002\,\mathrm{(stat.)} \pm 0.014\,\mathrm{(syst.)}$, in agreement with the Standard Model prediction

Search for pair-production of vector-like quarks in pp collision events at root s=13 TeV with at least one leptonically decaying Z boson and a third-generation quark with the ATLAS detector

A search for the pair-production of vector-like quarks optimized for decays into a Z boson and a third-generation Standard Model quark is presented, using the full Run 2 dataset corresponding to 139 fb-1 of pp collisions at & RADIC;s = 13 TeV, collected in 2015-2018 with the ATLAS detector at the Large Hadron Collider. The targeted final state is characterized by the presence of a Z boson with high transverse momentum, reconstructed from a pair of same-flavour leptons with opposite-sign charges, as well as by the presence of b-tagged jets and high-transverse-momentum large-radius jets reconstructed from calibrated smaller-radius jets. Events with exactly two or at least three leptons are used, which are further categorized by the presence of boosted W, Z, and Higgs bosons and top quarks. The categorization is performed using a neural-network-based boosted object tagger to enhance the sensitivity to signal relative to the background. No significant excess above the background expectation is observed and exclusion limits at 95% confidence level are set on the masses of the vector-like partners T and B of the top and bottom quarks, respectively. The limits depend on the branching ratio configurations and, in the case of 100% branching ratio for T-+ Zt and 100% branching ratio for B-+ Zb, this search sets the most stringent limits to date, allowing mT > 1.60 TeV and mB > 1.42 TeV, respectively. & COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3

Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at s=13 TeV with the ATLAS detector

A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Z boson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb−1 and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for ZH production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator

Measurement of b -quark fragmentation properties in jets using the decay B ± → J/ψK ± in pp collisions at s = 13 TeV with the ATLAS detector

Abstract: The fragmentation properties of jets containing b-hadrons are studied using charged B mesons in 139 fb−1 of pp collisions at s = 13 TeV, recorded with the ATLAS detector at the LHC during the period from 2015 to 2018. The B mesons are reconstructed using the decay of B± into J/ψK±, with the J/ψ decaying into a pair of muons. Jets are reconstructed using the anti-kt algorithm with radius parameter R = 0.4. The measurement determines the longitudinal and transverse momentum profiles of the reconstructed B hadrons with respect to the axes of the jets to which they are geometrically associated. These distributions are measured in intervals of the jet transverse momentum, ranging from 50 GeV to above 100 GeV. The results are corrected for detector effects and compared with several Monte Carlo predictions using different parton shower and hadronisation models. The results for the longitudinal and transverse profiles provide useful inputs to improve the description of heavy-flavour fragmentation in jets

Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at root s=13 TeV

A search for events with two displaced vertices from long-lived particle (LLP) pairs using data collected by the ATLAS detector at the LHC is presented. This analysis uses 139 fb-1 of proton-proton collision data at s=13 TeV recorded in 2015-2018. The search employs techniques for reconstructing vertices of LLPs decaying to jets in the muon spectrometer displaced between 3 and 14 m with respect to the primary interaction vertex. The observed numbers of events are consistent with the expected background and limits for several benchmark signals are determined. For the Higgs boson with a mass of 125 GeV, the paper reports the first exclusion limits for branching fractions into neutral long-lived particles below 0.1%, while branching fractions above 10% are excluded at 95% confidence level for LLP proper lifetimes ranging from 4 cm to 72.4 m. In addition, the paper present the first results for the decay of LLPs into tt¯ in the ATLAS muon spectrometer

Author Correction: A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery

In the version of this article initially published, the ATLAS Collaboration author names, affiliations and acknowledgements were omitted and have now been included in the HTML and PDF versions of the article