bluuebunny/crossref_metadata_2025 huggingface dataset:
Cambro–Ordovician ferrosilicic magmatism along the northern Gondwana margin: constraints from the Cézarenque–Joyeuse gneiss complex (French Massif Central)
Authors: Couzinié Simon , Bouilhol Pierre , Laurent Oscar , Grocolas Thomas , Montel Jean-Marc
Published: June 2022

It is well-acknowledged that the northern margin of the Gondwana supercontinent was affected by a major magmatic event at late Cambrian (Furongian) to early Ordovician (Tremadocian–Floian) times. However, an accurate assessment of its extent, origin, and significance is partly hampered by the incomplete characterization of the numerous gneiss massifs exposed in the inner part of the Variscan belt, as some of them possibly represent dismembered and deformed Furongian–Lower Ordovician igneous bodies. In this study, we document the case of the “Cézarenque–Joyeuse” gneiss complex in the Cévennes parautochthon domain of the French Massif Central. The gneisses form decametre- to kilometre-thick concordant massifs interlayered within a pluri-kilometric sequence of mica- and quartz schists. They encompass two main petrological types: augen gneisses and albite gneisses, both typified by their blue and engulfed quartz grains with the augen facies differing by the presence of centimetre-sized pseudomorphs after K-feldspar and the local preservation of igneous textures. Whole-rock geochemistry highlights that many gneisses have magmaticferrosilicic(acidic with anomalously high FeOtand low CaO) compositions while others are akin to greywackes. Collectively, it is inferred that the bulk of the Cézarenque–Joyeuse gneisses represents former rhyodacite lava flows or ignimbrites and associated epiclastic tuffs. Volumetrically subordinate, finer grained, and strongly silicic leucogneisses are interpreted as microgranite dykes originally intrusive within the volcanic edifices. LA–ICP–MS U–Pb dating of magmatic zircon grains extracted from an augen gneiss and a leucogneiss brackets the crystallization age of the silicic magmas between 486.1 ± 5.5 Ma and 483.0 ± 5.5 Ma which unambiguously ties the Cézarenque–Joyeuse gneisses to the Furongian–Lower Ordovician volcanic belt of SW Europe. Inherited zircon date distributions, Ti-in-zircon and zircon saturation thermometry demonstrate that they formed by melting at 750–820 °C of Ediacaran sediments. Zircon Eu/Eu* and Ce/Ce* systematics indicate that the melts were strongly reduced (fO2probably close to the values expected for the iron–wüstite buffer), possibly because they interacted during ascent with Lower Cambrian black shales. This would have enhanced Fe solubility in the melt phase and may explain the peculiarferrosilicicsignature displayed by many Furongian–Lower Ordovician igneous rocks in the northern Gondwana realm. We infer that crustal melting resulted from a combination of mantle-derived magma underplating in an intracontinental rift setting and anomalously elevated radiogenic heat production within the Ediacaran sedimentary sequences.
Study on reservoir description technology of complex fault block oilfield——Taking the South 1st member of D sag as an example
Authors: Qin Peirui , Liu Qinghua , Liu Li
Published: June 2022

The D sag has developed faults, serious erosion and fault loss, developed glutamate, strong heterogeneity, and large formation dip, which makes stratigraphic comparison difficult and unclear understanding of oil reservoir and oil-water relationship during the development process. For this reason, this study was carried out. On the basis of the existing seismic interpretation results, carry out the fine structural interpretation of the main sub-layers in the study area; carry out the study of sedimentary characteristics, divide the sedimentary facies, and clarify the sedimentary characteristics of the main sand bodies; use the core analysis data to establish the interpretation of physical parameters in the study area model, and establish a fine three-dimensional geological model, through the study of oil-water distribution law, carry out potential research, and select favorable well-distributed blocks.
Forest management plan based on carbon sequestration model
Authors: Cao Yunlu , Guo Mingzhu , Ma Xinhui
Published: June 2022

With the increase of carbon dioxide emissions in various countries, greenhouse gases surge, posing a threat to life systems. In this context, how to balance the multifaceted value of forests and improve the relationship between climate change through carbon sequestration of forests and forest products, so as to achieve the sustainable development of forests, is an urgent problem to be solved. The forest management decision-making model established in this paper includes comprehensive considerations such as carbon sequestration, biodiversity, socio-economic and cultural entertainment. The forest carbon sequestration model consists of direct absorption by vegetation and indirect sequestration of carbon dioxide by forest products. We use Cara model to comprehensively estimate forest net primary productivity and establish a model of carbon dioxide storage of forest products based on analytic hierarchy process. In order to realize the sustainable development of forest, we also applied fuzzy comprehensive evaluation and entropy weight method to establish a forest management plan model integrating biodiversity, social economy, culture and entertainment. Finally, we applied the model to Saihanba National Forest Park in China and got positive feedback. The forest management model established in this paper provides theoretical basis and technical support for forest sustainable development.
Post Evaluation of Power Grid Project Based on Rough Set and Improved Multi-Level Extension Assessment
Authors: Deng Chunyu , Chen Hao Li Wenjing
Published: June 2022

Post evaluation of power grid investment and construction project is an important part of power grid construction project. The effect of post evaluation will directly affect the quality level of project construction. Therefore, this paper proposes an improved post evaluation system based on rough set and fuzzy multi-level extension. Firstly, the main factors affecting the function effect of power grid construction project are analyzed. Then, the improved fuzzy multi-level extension evaluation model is constructed by combining fuzzy comprehensive evaluation theory with multi-level extension evaluation method. Finally, a 220 kV substation construction project is taken as an example to verify the validity and rationality of the model.
Adsorption of CO2 by alkali metals and weak alkali rare earth metals supported on aluminum pillared diatomite
Authors: Zhou Yunlong , Wang Jian , Hu Xiaotian
Published: June 2022

In this study, aluminum pillared diatomite loaded with alkali metals and weak alkali rare earth metals was prepared by impregnation method with cheap and abundant diatomite as raw material. Aluminum pillared diatomite loaded with alkali metals Cs, K, Na, Li and aluminum pillared diatomite loaded with weakly alkaline rare earth metals La, Nd, Tm were prepared respectively. Its physicochemical properties were studied by XRPD and N2 adsorption/desorption techniques, and characterized by thermogravimetric analysis, CO2 temperature programmed desorption and FTIR. The results show that the adsorption capacity of 5Cs/Al-PILC for CO2 is the highest, which is 2.355 mmol/g. The specific surface area and porosity of diatomite were improved by aluminum pillared modification, but the specific surface area and micropore content of metal loaded diatomite decreased slightly. The effect of alkalinity is greater than that of micropore amount. The adsorption performance of aluminum pillared diatomite adsorbent is affected by the synergistic effect of specific surface area, total micropore volume and alkalinity. Alkalinity is the main factor affecting the adsorption capacity. The adsorption process of CO2 on the sample is mainly chemical adsorption. The addition of appropriate amount of metal can enhance the alkalinity of the sample, and the adsorbed CO2 exists in the form of bicarbonate and carbonate. The adsorbent made from diatomite has low cost, can be used in industrial production, and has broad development prospects.
Practice and Research on Upgrading and Renovation of Sewage Treatment Plant in Guangxi Province
Authors: Duan Chunyi , Chen Hong
Published: June 2022

The construction of sewage treatment plant upgrading and renovation projects often needs to be completed under the conditions of ensuring the normal operation of existing sewage treatment plants. The renovation construction process is complicated, and the management and coordination are difficult. Taking the upgrading and renovation project of A sewage treatment plant in N City, Guangxi as the background, the problems faced in the process of upgrading and renovation of sewage treatment plant were analyzed, and reasonable and feasible solutions and management measures were put forward. certain reference value.
Shape analyticity and singular perturbations for layer potential operators
Authors: Dalla Riva Matteo , Luzzini Paolo , Musolino Paolo
Published: June 2022

We study the effect of regular and singular domain perturbations on layer potential operators for the Laplace equation. First, we consider layer potentials supported on a diffeomorphic imageϕ(∂Ω) of a reference set ∂Ω and we present some real analyticity results for the dependence upon the mapϕ. Then we introduce a perforated domain Ω(ε) with a small hole of sizeεand we compute power series expansions that describe the layer potentials on ∂Ω(ε) when the parameterεapproximates the degenerate valueε = 0.
Intraoperative Ultrasound-Guided Excision of Non-Palpable and Palpable Breast Cancer: Systematic Review and Meta-Analysis
Authors: Banys-Paluchowski Maggie , Rubio Isabel T. , Karadeniz Cakmak Güldeniz , Esgueva Antonio , Krawczyk Natalia , Paluchowski Peter , Gruber Ines , Marx Mario , Brucker Sara Y , Bündgen Nana , Kühn Thorsten , Rody Achim , Hanker Lars , Hahn Markus
Published: June 2022

Wire-guided localization (WGL) is the most frequently used localization technique in non-palpable breast cancer (BC). However, low negative margin rates, patient discomfort, and the possibility of wire dislocation have been discussed as potential disadvantages, and re-operation due to positive margins may increase relapse risk. Intraoperative ultrasound (IOUS)-guided excision allows direct visualization of the lesion and the resection volume and reduces positive margins in palpable and non-palpable tumors. We performed a systematic review on IOUS in breast cancer and 2 meta-analyses of randomized clinical trials (RCTs). In non-palpable BC, 3 RCTs have shown higher negative margin rates in the IOUS arm compared to WGL. Meta-analysis confirmed a significant difference between IOUS and WGL in terms of positive margins favoring IOUS (risk ratio 4.34, p < 0.0001, I2 = 0%). 41 cohort studies including 3291 patients were identified, of which most reported higher negative margin and lower re-operation rates if IOUS was used. In palpable BC, IOUS was compared to palpation-guided excision in 3 RCTs. Meta-analysis showed significantly higher rates of positive margins in the palpation arm (risk ratio 2.84, p = 0.0047, I2 = 0%). In 13 cohort studies including 942 patients with palpable BC, negative margin rates were higher if IOUS was used, and tissue volumes were higher in palpation-guided cohorts in most studies. IOUS is a safe noninvasive technique for the localization of sonographically visible tumors that significantly improves margin rates in palpable and non-palpable BC. Surgeons should be encouraged to acquire ultrasound skills and participate in breast ultrasound training.
Hygienekonzepte während der SARS-CoV-2-Pandemie zum Erhalt der Gesundheit und des Spielbetriebes im Fußball
Authors: Krutsch Werner , Alt Volker , Weber Johannes , Szymski Dominik
Published: June 2022

Die Coronapandemie hat den Fußball seit ihrem Beginn im Jahr 2020 voll im Griff. Nach dem anfänglichen Lockdown gehörten Fußballer aber zu den ersten Sportlern, die ihren Sport wieder ausüben durften, nicht zuletzt dank ausgefeilter Hygienekonzepte. Ein Rück- und Ausblick.
Betreuung von Sportlern in Covid-19-Zeiten: eine Perspektive aus der Sportpsychologie
Authors: Laborde Sylvain , Borges Uriassu , Adler Marius
Published: June 2022

Langsames Atmen, um die Folgen einer Covid-19-Erkrankung zu behandeln? Was sich ungewöhnlich anhört, ist eine wirksame Maßnahme, um die Herzaktivität zu verringern. Die Autoren stellen noch andere Maßnahmen vor, mit denen Sportlerinnen und Sportler in Zeiten der Coronapandemie ihre mentale und physische Gesundheit verbessern können.
Bewusst unterbewusst – Neuromuskuläres Training nach VKB-Ruptur
Authors: Köcker Sebastian
Published: June 2022

Das vordere Kreuzband reißt innerhalb von 50 Millisekunden nach Bodenkontakt. Unmöglich also, dies bewusst zu verhindern. Die Angst vor einer Reruptur ist daher bei vielen groß. Helfen können neuromuskuläre Automatismen, die sich durch ein spezielles Training adressieren lassen.
Prosthodontic Management of Immediately Extracted Teeth Using Bone Graft and Leukocyte-Platelet-Rich Fibrin: A Case Report
Authors: Sharma Ruchi , Kalra Tarun , Kumar Manjit , Bansal Ajay , Singh Ramandeep
Published: June 2022

The aim of this article is to present the clinical application of leukocyte-platelet-rich fibrin (L-PRF) at immediately extracted site after the implant placement. A 37-year-old male patient reported to the Department of Prosthodontics, Bhojia Dental college Budh Baddi Dist Solan Himachal Pradesh 173205 with the chief complaint of decayed teeth in the posterior region and wants a fixed prosthesis. On the day of surgery, implants were placed in freshly extracted sockets along with the bone graft and L-PRF membrane. After 6 months of healing period, implant level impressions were made and final porcelain fused to metal crowns were given to the patient.
The Role of Analytics Governance to Promote Health Care Transformation
Authors: Levy Bruce , Murphy Karen , Strevig Greg , Decker Ilia , Hanson Kirk , Puttagunta Raghuveer , Sinha Shikha , Tavares Spencer , Warsame Leyla , Vawdrey David
Published: June 2022

Objectives Rapid digitization in health care during the 21st century has created significant data and analytics challenges for our providers and health systems. Just as information technology (IT) governance has helped manage exploding demand for IT services and increased efficiencies, analytics governance promises to bring these same benefits to data and analytics efforts. Potential governance models exist in other industries yet have not significantly penetrated health care.

Methods and Results Geisinger has implemented analytics governance throughout our enterprise. We identified and accomplished six core goals toward the establishment of analytics governance, including developing a vision; defining the organizational structure, roles, and responsibilities; managing our data assets; implementing robust data governance; establishing standardized analytics processes; and utilizing metrics to evaluate our progress. Early outcomes include improved tracking and intelligence around data/analytics requests, decreases in duplicative data/analytics efforts, the creation of the Enterprise Analytics Hub for employees to consume data, and initial steps toward self-service analytics.

Conclusion Our experiences support the proposition that analytics governance can provide meaningful benefits to health systems. It is clear from the experiences in other industries that health systems who can best manage their data and analytics will have a significant competitive advantage. Analytics governance will also provide a proper foundation for the use of advanced analytics, machine learning, and visualization tools, and prepare our workforce to utilize these tools for the benefit of patients.
Multisystem Inflammatory Syndrome in Children Associated with COVID-19 Infection: A Comprehensive Review
Authors: Meza-Contreras Alejandra Isabel , Galdos-Bejar Marcelo Nicolas , Escalante-Kanashiro Raffo
Published: June 2022

The Multisystem Inflammatory Syndrome in Children (MIS-C) is a postinfectious syndrome associated with coronavirus disease 2019 (COVID-19) disease in children. The aim of this study is to conduct a thorough review to assist health care professionals in diagnosis and management of this complication of COVID-19 disease in children. A thorough systematic review was conducted through an on-line search based on MIS-C with the primary focus on epidemiology, clinical characteristics, diagnosis, pathophysiology, management, and long-term follow-up. This syndrome is characterized by an exaggerated and uncontrolled release of proinflammatory cytokines involving dysfunction of both innate and adaptive immunity. In this review, a summary of observational studies and case reports was conducted, in which we found that MIS-C generates multiple-organ failure frequently presenting with hemodynamic instability further characterized by Kawasaki-like symptoms (such as persistent high fever, polymorphic rash, and bilateral conjunctivitis) and predominance of gastrointestinal and cardiovascular signs and symptoms. Keys to effective management involve early diagnosis, timely treatment and re-evaluation following hospital discharge. Diagnosis is marked by significant elevation of inflammatory biomarkers, laboratory evidence of COVID-19 infection or history of recent exposure, and absence of any other plausible explanation for the associated signs, symptoms, and presentation. Management includes hemodynamic stabilization, empiric antibiotic therapy (de-escalation if cultures and polymerase chain reaction studies indicate no bacterial co-infection), immunomodulatory therapy (methylprednisolone, intravenous immunoglobulin, anakinra, tocilizumab, siltuximab, Janus kinase inhibitors, tumor necrosis factor-α inhibitors), antivirals (remdesivir), and anticoagulation (acetylsalicylic acid, unfractionated or low-molecular-weight heparin or new oral anticoagulants). In addition, we identified poor prognostic risk factors to include concurrent comorbidities, blood-component consumption and marrow suppression (lymphopenia, thrombocytopenia), depletion of homeostatic components (hypoalbuminemia), and marked evidence of a hyperinflammatory response to include elevated values of ferritin, C-reactive protein, and D-dimer. MIS-C constitutes a postinfectious syndrome characterized by a marked cytokine storm, characterized by fever, bilateral conjunctivitis, and multiple organ dysfunction. Promoting future research and long-term follow-up will be essential for the development of guidelines and recommendations leading to effective identification and management of MIS-C.
Patient Acceptance of Telemedicine in Urogynecology Consultations – A Cross-Sectional Study Performed at a Brazilian Public Institution
Authors: Macharet Débora Vianna D'Almeida Lucas , Mendes Leonardo Nogueira , Oliveira Walter Carlos Santos de , Pereira Gláucia Miranda Varella , Monteiro Marilene Vale de Castro
Published: June 2022

Objective To evaluate the acceptance of telemedicine and determine its associated factors in an urogynecology outpatient clinic of a public hospital in Brazil.

Methods The present was a cross-sectional study performed between June and November 2020. The included patients had their elective appointments postponed due to the coronavirus disease 2019 (COVID-19) pandemic. The variables considered regarding the acceptance of telemedicine were: urogynecologic diagnosis, age, level of schooling, place of residence, access to the internet, type of device used, frequency of internet use, and use of social media platforms. The categorical variables were described by their absolute and relative frequencies. The association among variables was evaluated through the Fisher exact test, and univariate and multivariate analyses, considering the acceptance of telemedicine as the dependent variable.

Results A total of 225 patients were listed, and 182 agreed to participate. The mean age was 59 years old, 81.3% of the patients had access to the internet, and 87.3% of them accepted telemedicine. There were statistically significant associations regarding the acceptance of telemedicine and high levels of schooling (p < 0.01), internet access (p < 0.01), daily use of the internet (p < 0.01), access through personal mobile phone (p < 0.01), and access through the participant's own residence (p < 0.01). In the univariate and multivariate analyses, only high levels of schooling were associated with the acceptance of telemedicine (Adjusted odds ratio: 4.82; 95% confidence interval = 1.59–14.65).

Conclusion Most of the urogynecology patients of a public hospital in a developing country accepted telemedicine. Internet access and level of schooling were the factors associated with the acceptance of telemedicine in urogynecology.
Mechanical Ventilation during ECMO: Lessons from Clinical Trials and Future Prospects
Authors: Fior Gabriele , Colon Zasha F. Vazquez , Peek Giles J. , Fraser John F.
Published: June 2022

Acute Respiratory Distress Syndrome (ARDS) accounts for 10% of ICU admissions and affects 3 million patients each year. Despite decades of research, it is still associated with one of the highest mortality rates in the critically ill. Advances in supportive care, innovations in technologies and insights from recent clinical trials have contributed to improved outcomes and a renewed interest in the scope and use of Extracorporeal life support (ECLS) as a treatment for severe ARDS, including high flow veno-venous Extracorporeal Membrane Oxygenation (VV-ECMO) and low flow Extracorporeal Carbon Dioxide Removal (ECCO2R). The rationale being that extracorporeal gas exchange allows the use of lung protective ventilator settings, thereby minimizing ventilator-induced lung injury (VILI). Ventilation strategies are adapted to the patient's condition during the different stages of ECMO support. Several areas in the management of mechanical ventilation in patients on ECMO, such as the best ventilator mode, extubation-decannulation sequence and tracheostomy timing, are tailored to the patients' recovery. Reduction in sedation allowing mobilization, nutrition and early rehabilitation are subsequent therapeutic goals after lung rest has been achieved.
Utility and Impact Analysis of Inpatient Pediatric Physiologic Monitoring
Authors: Gourishankar Anand , Evangelista Monaliza , Ellsworth Misti , Hsu Jean
Published: June 2022

This study aimed to study the practice and effect of monitoring hospitalized pediatric patients in terms the length of stay (LOS). We have performed a prospective, observational study of pediatric patients in the general ward from October to December 2016. We have recorded the use of cardiac monitor, pulse oximeter, or both, and as per physician order at patient admission. We have studied the proportions of monitoring in different patient groups. We have applied a linear regression model to investigate the relationship between LOS and cardiopulmonary monitoring, orders, and medical complexity. Among 399 patients, patients with cardiac and pulse oximeter monitoring with orders were 68 and 82%, respectively. The pulmonary group had more monitoring than the neurology group of patients. LOS was shorter in patients without monitoring; the median difference for the cardiac monitoring was one day (interquartile range [IQR] = 1), and the pulse oximeter was 0.5 days (IQR = 1). Cardiac monitoring order increased LOS by 22% (95% confidence interval [CI]: 0.5, 48%) and complex past medical history increased it by 25% (95% CI: 4, 51%). Our study highlights the variable practice in using monitors, emphasizing a standardized approach. The judicious use of monitoring may reduce prolonged hospitalization. Selective use of physiologic monitoring of ill-appearing or at risk of hypoxemia or cardiac dysrhythmia will reduce overuse.
Predicting the Position of the Internal Landmarks of Middle Cranial Fossa Using the Zygomatic Root: An Attempt to Simplify Its Complexity
Authors: Poonia Deepika , Wadhwa Surbhi , Mahajan Anita , Mishra Sabita
Published: June 2022

Subtemporal–extradural middle cranial fossa (MCF) surgical approach is used to access pathologies involving anterior or posterior part of the petrous bone or its apex. A reliable and precise identification of the important internal landmarks is key to a safe surgery with decreased incidence of morbidity. The zygomatic root (ZR) serves as a reliable reference guide for the surgeon when navigating through the MCF. The aim of the study is to establish an association between the extent of the ZR to the key internal foramina and bony prominences in lateral fossa of the MCF to help the neurosurgeon to safely navigate through the maze of structures of the MCF. The study demonstrates that the ZR is a reliable marker to estimate and predict the position of foramen ovale, foramen spinosum, and trigeminal fossa but not for the position of hiatus of greater petrosal nerve or the arcuate eminence. Successful localization of the foramen ovale, spinosum, and trigeminal fossa would reduce intraoperative time, ensure lesser retraction of brain, and hence reduce patient morbidity while performing surgeries on lesions of/in the internal acoustic canal, petroclival junctions, cerebellopontine angles, basilar artery, or transovale cannulation for the treatment of trigeminal neuralgia.
Characterization of three-dimensional fractional viscoelastic models through complex modulus analysis and polar decomposition
Authors: Ghosh Avradip , Both Avinash Kumar , Cheung Chin Li
Published: June 2022

Soft materials such as gels, elastomers, and biological tissues have diverse applications in nature and technology due to their viscoelastic nature. These soft materials often exhibit complex rheology and display elastic and viscous characteristics when undergoing deformation. In recent years, fractional calculus has emerged as a promising tool to explain the viscoelastic behavior of soft materials. Scalar constants are primarily used to quantify viscoelastic elements such as springs and dashpots. However, in three-dimensional (3D) space, not all materials show the same elastic or viscoelastic properties in all directions, especially under elastic/viscoelastic wave propagation (or anisotropy). Though previously reported studies on viscoelastic models have explained a power-law decay of the memory functions, none of them explicitly explained the 3D complex modulus through a matrix notation. In this paper, we present a mathematical formulation that employs tensor algebra and fractional calculus to derive the 3D complex modulus of Kelvin–Voigt, Maxwell, and other arrangements of viscoelastic models. The 3D complex modulus provides information about the elastic wave propagation in a media and can be used to explain anisotropy in different viscoelastic materials. Additionally, an advanced formulation of the moduli can improve the modeling in finite element analysis of 3D viscoelastic materials where discretization is vital for studying media of asymmetric shapes. Finally, we demonstrated a polar decomposition method to visualize viscoelastic tensors using the Green–Christoffel tensor and surface plots to represent the degrees of anisotropy and viscoelasticity in the Fourier domain when the medium is probed by a time-harmonic homogeneous plane wave.
Enstrophy evolution during head-on wall interaction of premixed flames within turbulent boundary layers
Authors: Ghai Sanjeev Kr. , Chakraborty Nilanjan , Ahmed Umair , Klein Markus
Published: June 2022

The statistical behaviors of mean enstrophy and its evolution during head-on interaction of premixed flames propagating toward a chemically inert flat wall across the turbulent boundary layer have been analyzed using direct numerical simulations for a friction velocity-based Reynolds number of Reτ=110. The enstrophy dynamics have been analyzed for both isothermal and adiabatic thermal wall boundary conditions. The contributions of vortex-stretching and viscous dissipation are found to be leading order source and sink, respectively, to the mean enstrophy transport in both non-reacting and reacting flows irrespective of the wall boundary condition. However, the contributions due to dilatation rate and baroclinic torque play important roles in addition to the leading order contributions of the vortex-stretching and viscous dissipation terms in the enstrophy transport in turbulent premixed flames. The thermal boundary condition has been demonstrated to affect the near-wall behavior of the enstrophy transport contribution due to dilatation rate, which also affects the near-wall distribution of the enstrophy. The magnitudes of the leading order contributors to the enstrophy transport decrease with the progress of head-on interaction for both wall boundary conditions. Moreover, the overall sink contributions to the enstrophy transport dominate over the source contributions, giving rise to a drop in the mean enstrophy with the progress of head-on interaction. The enstrophy distribution changes significantly during flame-wall interaction, which gives rise to a modification of the relative proportion of the coherent structures in the reacting flow turbulent boundary layer compared to the corresponding non-reacting flow features.
Topoisomerase VI participates in an insulator-like function that prevents H3K9me2 spreading
Authors: Méteignier Louis-Valentin , Lecampion Cécile , Velay Florent , Vriet Cécile , Dimnet Laura , Rougée Martin , Breuer Christian , Soubigou-Taconnat Ludivine , Sugimoto Keiko , Barneche Fredy , Laloi Christophe
Published: June 2022

The organization of the genome into transcriptionally active and inactive chromatin domains requires well-delineated chromatin boundaries and insulator functions in order to maintain the identity of adjacent genomic loci with antagonistic chromatin marks and functionality. In plants that lack known chromatin insulators, the mechanisms that prevent heterochromatin spreading into euchromatin remain to be identified. Here, we show that DNA Topoisomerase VI participates in a chromatin boundary function that safeguards the expression of genes in euchromatin islands within silenced heterochromatin regions. While some transposable elements are reactivated in mutants of the Topoisomerase VI complex, genes insulated in euchromatin islands within heterochromatic regions of the
Arabidopsis thaliana
genome are specifically down-regulated. H3K9me2 levels consistently increase at euchromatin island loci and decrease at some transposable element loci. We further show that Topoisomerase VI physically interacts with S-adenosylmethionine synthase methionine adenosyl transferase 3 (MAT3), which is required for H3K9me2. A Topoisomerase VI defect affects MAT3 occupancy on heterochromatic elements and its exclusion from euchromatic islands, thereby providing a possible mechanistic explanation to the essential role of Topoisomerase VI in the delimitation of chromatin domains.
Sociolinguistic Variation in Old English
Authors: Timofeeva Olga
Published: June 2022

This is the first extensive study of Old English to utilise the insights and methodologies of sociolinguistics. Building on previous philological and historical work, it takes into account the sociology and social dialectology of Old English and offers a description of its speech communities informed by the theory of social networks and communities of practice. Specifically, this book uses data from historical narratives and legal documents and examines the interplay of linguistic innovation, variation, and change with such sociolinguistic parameters as region, scribal office, gender, and social status. Special attention is given to the processes of supralocalisation and their correlation with periods of political centralisation in the history of Anglo-Saxon England.
Differential object marking in heritage and homeland Italian
Authors: di Salvo Margherita , Nagy Naomi
Published: June 2022

We examine variable patterns of use of differential object marking (DOM) in conversational Italian recorded in
Toronto, Canada, and Calabria, Italy. An exhaustive sample of 366 direct objects, produced by Homeland and three generations
of Heritage speakers, shows retention of the DOM system. Successive generations have lower rates of DOM, but this is because
they don’t produce enough tokens of certain syntactic and semantic types (e.g., left-dislocated or indefinite pronouns). Thus,
they have less opportunity to use DOM: token distributions account for their lower rates. In contexts with sufficient tokens,
significant contrasts emerge, indicating that all generations retain the conditioning of relevant factors (Definiteness,
Referent of Object, Verb Type, Dislocation). No effects of social network or linguistic practices emerged.
On (not) acquiring a sociolinguistic stereotype
Authors: Davidson Justin
Published: June 2022

Catalan exhibits a systematic velarization of alveolar lateral /l/ to (dark) [ɫ], somewhat infamously and even
pejoratively recognized by speakers as la ela catalana ‘the Catalan l,’ in salient opposition to the
non-velarized (or light) realizations of the parallel alveolar lateral Spanish category, realized as [l] (Bibiloni 2006; Davidson 2019; Hualde 2005). In light of an attested negative social stigma afforded to velarized /l/
(Davidson 2019; Pieras 1999; Simonet 2010a), in this study I examine the variable acquisition of Catalan /l/ by
L1-Spanish speakers. In so doing, I problematize the assessment of successful second language acquisition for an L1
sociolinguistic stereotype (cf. Labov 2001), ultimately demonstrating how
L2-speakers adopt native-like sociolinguistic variation with non-native-like speech variants.
High-performance quaternary polymer solid-state electrolyte via one-step casting method
Authors: Wang Zhen-yu , Li Cong , Li Jing-yi , He Zhen-jiang , Cheng Yi , Yan Cheng , Mao Jing , Dai Ke-Hua , Zhang Xia-hui , Zheng Jun-chao
Published: June 2022

Lithium-ion batteries have achieved huge success in the field of energy storage, but they use flammable electrolytes that may cause safety issue. Solid polymer electrolytes have been considered as the final solution to this safety issue, which have received many researchers’ attention. However, solid polymer electrolytes still face several challenges, such as low ionic conductivity. Herein, we report a quaternary solid polymer electrolyte to achieve high ionic conductivity, which was synthesized by one-step casting method. This quaternary electrolyte contains two polymers (poly(vinylidene fluoride-co-hexafluoropropylene) and poly(ethylene oxide) diacrylate), one plasticizer (succinonitrile), and one lithium salt (lithium bis(trifluoromethane)sulfonimide). Long-chain polymer is used as matrix, and short-chain polymer and plasticizer are used to increase ionic conductivity. This quaternary electrolyte achieves a high ionic conductivity of 1.49 × 10−4S cm−1at room temperature. When assembled into coin cell with lithium iron phosphate cathode and lithium metal anode, this quaternary electrolyte achieves a capacity of 139 mAh g−1at 0.2 C after 50 cycles and 106 mAh g−1at 1 C after 160 cycles. Moreover, this facile one-step casting method provides a new route towards the development of solid polymer electrolytes.
Investigation into cage slip and vibration behavior of rolling bearing based on weak magnetic detection
Authors: Zhan Liwei , Li ZhengHui , Chi Jie , Zhuo Shi , Li Chengwei
Published: June 2022

Cage slip and vibration are two key indicators for evaluating bearing health status. However, in actual service, due to the limitations of installation space and interference from harsh environments such as high temperatures and oil mist, it is difficult to detect the cage slip and vibration of rolling bearings. To solve this problem, based on the principle of bearing motion under magnetic field disturbance, a weak magnetic detection method is proposed to obtain mixed feature information about cage motion and bearing vibration. To separate the kinematic characteristics of the bearings, a method of local reconstruction based on intrinsic mode functions and a comprehensive evaluation index based on statistical parameters is proposed to identify the relevant mode including cage motion and vibration behavior. The cage slip and vibration characteristics are obtained by the fast Fourier transform and envelope demodulation technique. The different fault levels of rolling bearings are used to evaluate the performance of the proposed method under variable speed. The results show that the proposed method can identify cage slip and vibration behavior effectively.
Engineering topological state transfer in four-period Su–Schrieffer–Heeger chain
Authors: Bao Xi-Xi , Guo Gang-Feng , Tan Lei
Published: June 2022

An extended Su–Schrieffer–Heeger (SSH) model containing four periods of the hopping coefficients, called SSH4 model, is constructed to explore robust quantum state transfer. The gap state protected by the energy gap plays the role of the topological channel where the particle initially located at the last lattice site has the probability to arise at the first and all even lattice sites equally. Serving those sites as ports, a multi-port router can be realized naturally, and the fidelity reaches unity in a wide range of parameters under the long chain and random disorder. Further, when we reduce the third intracell hopping to a small value, the occupancy probability of the second lattice site in every unit cell will reduce to zero, by which a new topological router can be induced. In addition, our SSH4 model can work as a 1/3 beam splitter. Namely, the particle initially occupies the first lattice site and finally appears with equal probability at three lattice sites. We can also realize a 1/2 beam splitter. Our four-period SSH model provides a novel way for topological quantum information processing and can engineer two kinds of quantum optical devices.
A silazane additive for CsPbI2Br perovskite solar cells
Authors: Cao Ruiqi , Yue Yaochang , Zhang Hong , Cheng Qian , Wang Boxin , Li Shilin , Zhang Yuan , Li Shuhong , Zhou Huiqiong
Published: June 2022

Adding additives into peroskite precursor solution has been proven as a simple and efficient strategy to improve the quality of peroskite films. In this work, we demonstrate an effective additive strategy to improve the quality of all-inorganic perovskite films by adding a novel silazane additive heptamethyldisilazane (HDMS). The power conversion efficiency (PCE) of the optimized devices is enhanced from 14.55% to 15.31% with an open-circuit voltage over 1.26 V due to the higher quality perovskite films with lower trap density after the incorporation of HDMS. More interestingly, the HDMS devices exhibit superior humidity and thermal stability compared with the control ones. This work provides a simple and efficient strategy to enhance the device performance and stability of all-inorganic perovskite solar cells, which could facilitate its commercialization.
Rapid detection method of radioactive source based on low-count gamma spectra
Authors: Yuan Y. , Qu J. , He J. , Tan Z. , Liu Y.
Published: June 2022

This paper presented a mobile CsI gamma detector developed
to solve the problem of radioactive source detection in a wide
area. The performance of the detector was illustrated during the
spectra collection investigation. 1-s spectrum collected by the
detector was low-count signal, which is hard to distinguish whether
it is a source contained signal or not. A rapid detection method of
radioactive source based on the low-count gamma spectra was
proposed. Principal component analysis (PCA) was the key technology
which was able to extract the source information efficiently. The
proposed method improved the detector sensitivity and accuracy.
Trajectories of charged particles in knotted electromagnetic fields
Authors: Kumar Kaushlendra , Lechtenfeld Olaf , Costa Gabriel Picanço
Published: June 2022

We investigate the trajectories of point charges in the background of finite-action vacuum solutions of Maxwell’s equations known as knot solutions. More specifically, we work with a basis of electromagnetic knots generated by the so-called ‘de Sitter method’. We find a variety of behaviors depending on the field configuration and the parameter set used. This includes an acceleration of particles by the electromagnetic field from rest to ultrarelativistic speeds, a quick convergence of their trajectories into a few narrow cones asymptotically for sufficiently high value of the coupling, and a pronounced twisting and turning of trajectories in a coherent fashion. This work is part of an effort to improve the understanding of knotted electromagnetic fields and the trajectories of charged particles they generate, and may be relevant for experimental applications.
Optimization of agricultural land use by impact on the climate
Authors: Kiryushin V I
Published: June 2022

An assessment of the agrogenic transformation of the main ecological landscape functions affecting the greenhouse effect (bioproductive, destructive, organo-accumulative, biogeochemical) is given. It is shown that the tasks of optimizing agricultural environmental management under economic and agroecological conditions coincide with the tasks of maintaining a deficit-free carbon balance, reducing nitrogen gas losses and greenhouse gas emissions. The inexpediency of using emergency alarmist measures to reduce greenhouse gases is justified. The immediate tasks of optimizing nature management are associated with the development of adaptive landscape farming systems and ecological optimization of animal husbandry, which will ensure a deficit-free balance of carbon and biogenic elements, significantly stop the processes of soil and landscape degradation, and significantly reduce CO2 emissions.
Prospects for the development of adaptive landscape farming systems in Russia
Authors: Kiryushin V I
Published: June 2022

The achievements of adaptive landscape agriculture systems (ALAS) were considered as an expression of a new, biospheric paradigm of nature management. ALAS are confined to various agroecological land groups (upland, erosive, hydromorphic, saline, etc.). Within the groups, there are land types for which agricultural technologies of various intensification levels are being developed. The ALAS design tools include a register of land types, a register of crop varieties, and a register of agrotechnologies. The development of ALAS projects for agricultural enterprises is carried out in AgroGIS based on soil and landscape mapping materials based on agroecological typology and landscape-ecological classification of lands. ALAS are formed based on the results of multifactorial field experiments that establish systemic links between agriculture elements and landscape-ecological conditions. The ALAS development is associated with the deepening of landscape differentiation and further with the design of agricultural landscapes (cultivated lands, livestock, water, forestry, residential ones) in the territory ecological framework system. The methodology and tools of their design based on the transformation of ecological functions of the landscape into socio-economic ones are proposed.
Festulolium plant yield, nutritive and energy value depending on its variety
Authors: Obraztsov V N , Kadyrov S V , Shchedrina D I
Published: June 2022

The presented research is the first to study the fodder productivity, nutritive and energy value of new varieties of Festulolium of different morphotypes in the conditions of the forest-steppe of the Central Chernozem Region of Russia. In the green mass of the studied varieties crude protein content was quite low ranging from 6.2 to 9.7%, which was 1.4-2.3 times lower than required by zootechnical norms for cattle feeding. The studied varieties of Festulolium were distinguished by a rather high content of soluble sugars, which was 14.7-19.4%. The Viknel variety contained more digestible protein (68.74-76.01 g), but this value did not differ much from other varieties, in which it ranged from 64.78 to 72.47 g/kg of green mass. Among the studied varieties of Festulolium the highest yield of green mass was obtained in the second and third years of grass stand life. Productivity of the Izumrudnyi fescue-type mowing variety reached 40.31-44.09 t/ha, which was 1.3-1.9 times higher than that of ryegrass-type mowing-and-grazing varieties, the yield of which was 23.07-31.24 t/ha.
Dependence of the operating body parameters of the cleaner tray to the cross-section of the pump
Authors: Usmanov T , Karimov M , Sharipov Z , Usmanov N K , Kholbutayev M
Published: June 2022

This article discusses some theoretical issues and structural capabilities of the tray cleaner working body. The process of cutting the deposited layer with an active working body. On the significant influences of the translational working speed on the cutting process of the alluvial soil layer, as well as on the effects of the speed parameter of the working body on its energy intensity.
A Contribution to the Study of Pollination of Alfalfa Medicago Sativa (L.) by Bees Osmia Cornuta (latreille, 1805) (HYMENOPTERA: MEGACHILIDAE) in the Donbass Region
Authors: Kuzicheva Nadezhda N
Published: June 2022

O. cornuta is a monovaltine polylectic bee, which in natural conditions prefers to forage, visiting fruit and berry crops, or, if they are missing, other plant species. With the aim of defining whether a bee under study is able to mate and build a nest in the summertime, detecting temperature conditions of the first emergence of individuals and specifying the duration of a lifecycle of breeding stock during the period of active flight, we conducted an experiment on the field of alfalfa Medicago sativa (Linnaeus, 1753) in agricultural limited liability company “Timiryazevskoe” in Amvrosievskiy raion, in the summertime (the third decade of June – the first decade of July). The data were obtained after artificially prolonged cold diapause of cocoons. For prolongation of diapause, refined cocoons of imagoes were placed in the fridge. After removal of cocoons from the fridge, incubated breeding stock was transported to the experimentation area and placed in previously prepared artificial nesting constructions. For nesting of future offspring bundles of single-channel reed were used. When nesting constructions had been installed, we started to observe emergence of male imagoes, followed by emergence of female imagoes. The article provides information about seasonal and circadian activity, lifecycle of bees O.cornuta. The received data could be used to plan artificial breeding of O.cornuta with a view to pollination of entomophilous agricultural plants on open ground during the summer period.
Current state of agriculture in the republic of Uzbekistan and the need for improving the efficiency of agro-clusters in the fruit and vegetable industry
Authors: Khakimov Rashid , Sarsengaliy Bayjanov , Rozikov Jahongir , Mamatkulov Murodjon , Ismailov Kuatbay , Durmanov Akmal
Published: June 2022

The article provides a basis for the need to reform the agricultural sector of Uzbekistan in general, and its fruit and vegetable industry in particular. The main problems faced by the agricultural sector of Uzbekistan were the high costs of collection, transportation, storage, processing, packaging and certification when delivering products from the field to end-users. Limited processing and packaging capacity of farms, which produce the bulk of fruit and vegetable exports in Uzbekistan, leads to significant losses. It should be noted that the share of agro-clusters in the markets of developed countries (European Union, USA and Canada) exceeds 40%, and in Uzbekistan this direction is only developing. In this regard, the article used the following tasks: to study the theoretical basis for the creation of agro-clusters to analyze the current economic situation in the country, to make recommendations for the creation of agro-clusters in fruit and vegetable products. Industry of Uzbekistan.