bluuebunny/crossref_metadata_2025 huggingface dataset:
Cyclin B3 activates the Anaphase-Promoting Complex/Cyclosome in meiosis and mitosis
Authors: Garrido Damien , Bourouh Mohammed , Bonneil Éric , Thibault Pierre , Swan Andrew , Archambault Vincent
Published: June 2020

In mitosis and meiosis, chromosome segregation is triggered by the Anaphase-Promoting Complex/Cyclosome (APC/C), a multi-subunit ubiquitin ligase that targets proteins for degradation, leading to the separation of chromatids. APC/C activation requires phosphorylation of its APC3 and APC1 subunits, which allows the APC/C to bind its Cdc20 co-activator. The identity of the kinase(s) responsible for APC/C activation in vivo is unclear. Cyclin B3 is required for meiotic anaphase in flies, worms and vertebrates, but whether it activates the APC/C is unclear. We found thatDrosophilaCyclin B3 (CycB3) collaborates with PP2A-B55/Tws in embryonic development, indicating that CycB3 also promotes anaphase in mitosis. Moreover, CycB3 promotes APC/C activity and anaphase in cells in culture. We show that CycB3 physically associates with the APC/C, is required for phosphorylation of APC3, and promotes APC/C association with its co-activators. We propose that CycB3-Cdk1 directly phosphorylates the APC/C to activate it in both meiosis and mitosis.
SARS-CoV-2 infection leads to acute infection with dynamic cellular and inflammatory flux in the lung that varies across nonhuman primate species
Authors: Singh Dhiraj Kumar , Ganatra Shashank R. , Singh Bindu , Cole Journey , Alfson Kendra J. , Clemmons Elizabeth , Gazi Michal , Gonzalez Olga , Escobedo Ruby , Lee Tae-Hyung , Chatterjee Ayan , Goez-Gazi Yenny , Sharan Riti , Thippeshappa Rajesh , Gough Maya , Alvarez Cynthia , Blakley Alyssa , Ferdin Justin , Bartley Carmen , Staples Hilary , Parodi Laura , Callery Jessica , Mannino Amanda , Klaffke Benjamin , Escareno Priscilla , Platt Roy N. , Hodara Vida , Scordo Julia , Oyejide Adelekan , Ajithdoss Dharani K. , Copin Richard , Baum Alina , Kyratsous Christos , Alvarez Xavier , Rosas Bruce , Ahmed Mushtaq , Goodroe Anna , Dutton John , Hall-Ursone Shannan , Frost Patrice A. , Voges Andra K. , Ross Corinna N. , Sayers Ken , Chen Christopher , Hallam Cory , Khader Shabaana A. , Mitreva Makedonka , Anderson Timothy J. C. , Martinez-Sobrido Luis , Patterson Jean L. , Turner Joanne , Torrelles Jordi B. , Dick Edward J. , Brasky Kathleen , Schlesinger Larry S. , Giavedoni Luis D. , Carrion Ricardo , Kaushal Deepak
Published: June 2020

There are no known cures or vaccines for COVID-19, the defining pandemic of this era. Animal models are essential to fast track new interventions and nonhuman primate (NHP) models of other infectious diseases have proven extremely valuable. Here we compare SARS-CoV-2 infection in three species of experimentally infected NHPs (rhesus macaques, baboons, and marmosets). During the first 3 days, macaques developed clinical signatures of viral infection and systemic inflammation, coupled with early evidence of viral replication and mild-to-moderate interstitial and alveolar pneumonitis, as well as extra-pulmonary pathologies. Cone-beam CT scans showed evidence of moderate pneumonia, which progressed over 3 days. Longitudinal studies showed that while both young and old macaques developed early signs of COVID-19, both groups recovered within a two-week period. Recovery was characterized by low-levels of viral persistence in the lung, suggesting mechanisms by which individuals with compromised immune systems may be susceptible to prolonged and progressive COVID-19. The lung compartment contained a complex early inflammatory milieu with an influx of innate and adaptive immune cells, particularly interstitial macrophages, neutrophils and plasmacytoid dendritic cells, and a prominent Type I-interferon response. While macaques developed moderate disease, baboons exhibited prolonged shedding of virus and extensive pathology following infection; and marmosets demonstrated a milder form of infection. These results showcase in critical detail, the robust early cellular immune responses to SARS-CoV-2 infection, which are not sterilizing and likely impact development of antibody responses. Thus, various NHP genera recapitulate heterogeneous progression of COVID-19. Rhesus macaques and baboons develop different, quantifiable disease attributes making them immediately available essential models to test new vaccines and therapies.
Bismuth nanoparticles obtained by a facile synthesis method exhibit antimicrobial activity againstStaphylococcus aureusandCandida albicans
Authors: Vazquez-Munoz Roberto , Arellano-Jimenez M. Josefina , Lopez-Ribot Jose
Published: June 2020

Bismuth compounds are known for their activity against multiple microorganisms; yet, the antibiotic properties of bismuth nanoparticles (BiNPs) remain poorly explored. The objective of this work is to further the research of BiNPs for nanomedicine, particularly as a disinfectant and for future treatments. Stable PVP-coated BiNPs were produced by a chemical reduction process, in less than 30 minutes, in a heated alkaline glycine solution, by the chelation and reduction of the bismuth (III) ion; resulting in the generation of small, spheroid particles with a crystalline organization. We assessed the antibacterial and antifungal activity of bismuth nanoparticles. PVP-BiNPs showed potent antibacterial activity against the pathogenic bacteriumStaphylococcus aureusand antifungal activity against the opportunistic pathogenic yeastCandida albicans, both under planktonic and biofilm growing conditions. Our results indicate that BiNPs represent promising antimicrobial nanomaterials, and this facile synthetic method may allow for further investigation of their activity against a variety of pathogenic microorganisms.
Antecedents to responsible financial management behavior among young adults: moderating role of financial risk tolerance
Authors: Bapat Dhananjay
Published: June 2020

Purpose

The study examines the antecedents of responsible financial management behavior among young adults in India and explores the role of financial risk tolerance as a moderating variable.

Design/methodology/approach

The sample includes young adults in the age group of 18–35. The analysis uses a two-step approach via standard partial least squares structural modeling (PLS-SEM) and ordinary least square (OLS) regression.

Findings

Structural modeling results show that financial attitude fully mediates the relationship between financial knowledge and responsible financial management behavior, and locus of control influences responsible financial management behavior. Financial risk tolerance moderates the relationship. Among demographic factors, age and occupation influence responsible financial management behavior.

Research limitations/implications

The financial knowledge used in the survey are based on self-reported responses. The future study can include participants from both developed and emerging countries to assess similarities and differences.

Practical implications

Despite the growing focus on improving financial literacy, there are growing concerns regarding responsible financial behavior. Since financial services is related to fiduciary responsibility, managers and policymakers need to ensure that financial knowledge results in improving financial attitude, which further leads to responsible financial behavior.

Originality/value

The present study from an emerging country will add value to the literature.
Understanding early-stage firm performance: the explanatory role of individual and firm level factors
Authors: Seet Pi-Shen , Lindsay Noel , Kropp Fredric
Published: June 2020

Purpose

This study presents and validates a theoretical model linking individual characteristics of the founding or lead innovative entrepreneur of a start-up venture – the entrepreneur's values, entrepreneurial attitudes and entrepreneurial self-efficacy – to the firm's entrepreneurial orientation (EO) and market orientation (MO) and, ultimately, to firm performance.

Design/methodology/approach

We conducted a survey on a stratified random sample of founders of early-stage South Australian micro- and small enterprises with a response rate of 24% (N = 204). Structural equation modelling was used to evaluate the model.

Findings

The study found that there is a significant relationship between the individual lead entrepreneur and firm strategies developed in early-stage firms in explaining firm performance. It also found that internal values are positively related to entrepreneurial attitude. Entrepreneurial attitude is positively related to entrepreneurial self-efficacy and EO innovativeness. In turn, entrepreneurial self-efficacy is related to innovativeness, proactiveness and risk-taking. The proactiveness dimension of EO and entrepreneurial attitude is related to MO. Entrepreneurial self-efficacy, innovativeness and MO are related to firm performance.

Research limitations/implications

This research was limited to entrepreneurial ventures in South Australia and may lack generalisability in other states and countries.

Originality/value

The research contributes to the understanding of the heterogeneity within self-employed individuals, in particular among innovative entrepreneurs, by expanding insights regarding antecedents and consequences of the entrepreneurial process. It develops insights into the links of individual-level constructs with firm-level constructs to develop a more meaningful understanding of new venture creation and performance. It enhances our knowledge of the heterogeneity within the group of self-employed by exploring the individual entrepreneurial antecedents of performance in early-stage firms.
A collaborative project delivery method for design of a high-performance building
Authors: Engebø Atle , Klakegg Ole Jonny , Lohne Jardar , Lædre Ola
Published: June 2020

Purpose

To achieve the shift towards sustainable construction the industry must change the project delivery methods used. Therefore, this paper reports on a high-performance building project that implemented a collaborative project delivery method through the examination of the following research questions: RQ1: What were the most important contractual, cultural and organisational elements studied in the collaborative project delivery method? RQ2: What were the effects of the studied elements?

Design/methodology/approach

A longitudinal case study approach was adopted. As for means of data collection, a document review, semi-structured interviews, and observations was conducted. A total of 20 observations (App. 80 h, 175 pages of notes) and 12 interviews (App. 20 h, 100 pages of notes) with project participants was conducted.

Findings

The analysis indicates that if attention is paid to task, team and individual needs through contractual, cultural and organisational elements, this will affect the development of an integrated team.

Research limitations/implications

We demonstrate that the effects of the elements are shown through their achievement in creating and sustaining an integrated team of inter-organisational participants working in a collaborative environment.

Practical implications

It provides a better understanding of how a collaborative project delivery method for the design phase emphasises team integration. We demonstrate that while the principal sets the contractual boundaries by deciding the contractual elements, the agent should be intentional in the selection and use of organizational and cultural elements.

Originality/value

The paper suggests that it is not enough to just have contractual elements implemented. Consequently, this insight suggests that managers should be attentive to the untapped potential that lies within organisational and cultural elements.
Statistical quality control in the food industry: a risk-based approach
Authors: Prata Emille Rocha Bernardino de Almeida , Chaves José Benício Paes , Gomes Silvane Guimarães Silva , Passos Frederico José Vieira
Published: June 2020

Purpose

Quantitative metrics should be used as a risk management option whenever possible. This work proposes a framework for the risk quantification and the resulting risk-based design of control charts to monitor quality control points.

Design/methodology/approach

Two quality control models were considered for the risk quantification analysis. Estimated operating characteristic curves, expressing the defect rate (on a ppm basis) as a function of the sample size, process disturbance magnitude and process capacity, were devised to evaluate the maximum rate of defective product of the processes. The proposed framework applicability on monitoring critical control points in Hazard Analysis and Critical Control Point (HACCP) systems was further evaluated by Monte Carlo simulations.

Findings

Results demonstrate that the proposed monitoring systems can be tuned to achieve an admissible failure risk, conveniently expressed as the number of non-conforming items produced per million products, and these risks can be properly communicated. This risk-based approach can be used to validate critical control point monitoring procedures in HACCP plans. The expected rates of non-conforming items sent out to clients estimated through stochastic simulation procedures agree well with theoretical predictions.

Practical implications

The procedures outlined in this study may be used to establish the statistical validity of monitoring systems that uses control charts. The intrinsic risks of these control systems can be assessed and communicated properly in order to demonstrate the effectiveness of quality control procedures to auditing third parties.

Originality/value

This study provides advancements toward practical directives for the implementation of statistical process control in the food industry. The proposed framework allows the assessment and communication of intrinsic failure risks of quality monitoring systems. It may contribute to the establishment of risk-based thinking in the constitution of quality management systems.
Government subsidies in the power battery recycling industry
Authors: Ding Peiqi , Zhao Zhiying , Li Xiang
Published: June 2020

Purpose

The power battery is the core of a new energy vehicle and plays a vital role in the rise of the new energy vehicle industry. As the number of waste batteries increases, firms involved in the industry need to properly dispose them, but what party is responsible remains unclear. To reduce environmental impacts, governments introduce two subsidy policies, i.e. collection subsidies, which are provided to the collecting firms, and dismantling subsidies, which are provided to the dismantling firms.

Design/methodology/approach

Based on the different characteristics of the subsidies, we develop a stylized model to examine the collection strategies and the preferences over the subsidies.

Findings

We derive several insights from analysis. First, the collection strategies depend on the fixed collection cost. Second, the key factor determining the firm's subsidy preference is the efficiency of dismantling. Finally, if the primary target is the collection rate, governments prefer to provide collection subsidies. If consider the environmental impact, the choice of subsidies has to do with the efficiency of dismantling. Moreover, from a social welfare perspective, the raw material cost and the efficiency of dismantling are core indicators of decision.

Originality/value

This work develops the first analytical model to study two power battery subsidies and investigate the optimal collecting strategies and subsidy preferences. The insights are compelling not only for the manufacturer and the third party but also for policymakers.

Peer review

The peer review history for this article is available at:https://publons.com/publon/10.1108/IMDS-08-2019-0450
An autoethnography of death and dying in Northern Ireland
Authors: Carroll Áine
Published: June 2020

Purpose

In Northern Ireland, access to good quality palliative care is an accepted and expected part of modern cancer care. The “Transforming Your Palliative and End of Life Care” programme “supports the design and delivery of coordinated services to enable people with palliative and end of life care needs to have choice in their place of care, greater access to services and improved outcomes at the end of their lives”. The purpose of this autoethnography is to share the author’s lived experience so that it might be used to improve services.

Design/methodology/approach

Autoethnography is employed as the research method. The author describes her experience of caring for father over the last six months of his life. She explores the tensions between the different players involved in the care of her father and the family and the internal conflict that developed within her as daughter, carer, care coordinator and doctor. Using multiple data sources, selected data entries were explored through reflexive, dyadic interviews to explore the experience and meaning in each story.

Findings

The author found that autoethnography was a powerful tool to give voice to the carer experience. Narration can be a powerful tool for capturing the authentic lived experiences of individuals and families and is a tool seldom utilised in integrated care. This account provides an insight into the author's expectations of integrated palliative care, as a designer and implementer and now an academic in integrated care and concludes with some reflections about the gap between policy and practice in palliative care services in Northern Ireland.

Originality/value

Autoethnography can be a powerful tool for capturing the authentic lived experiences of individuals and families and is an essential component of the quadruple aim.
Confirmatory Factor Analysis of the Invalidating Childhood Environment Scale in Spanish (ICES)
Authors: Puddington Martin Miguel , Wright Erika , Gagliesi Pablo
Published: June 2020

Background/Objective: The Invalidating Childhood Environment Scale (ICES) is an instrument designed to assess retrospectively parental invalidation experience, according to Marsha Linehan’s definition of invalidation. The main aim of this paper is to determine the factorial structure of the ICES. Three factor structures: Standard Model, Reduced Model, and 2 Factor Model are examined. Also, the association between invalidating experience and borderline symptoms is studied. Method: Data from a non-clinical, volunteer sample of 274 adults was collected. Participants completed 4 surveys: Demographic surveys, Invalidating Childhood Environment Scale (ICES), Borderline Symptoms List (BSL 23), and Parental Bonding Instrument (PBI). Statistical analyses included confirmatory factor analysis and multiple linear regression. Results: The results of the analysis presented indicate that the ICES is a reliable instrument, and that the 2 Factor Model is good fit and allows for a broader understanding of invalidation and it’s qualities. The results of the linear regression analysis indicated a mild but significant association between invalidation and BPD symptoms. Internal consistency was acceptable for all levels. Conclusion: The outcome of this study shows that the ICES is a useful instrument that can be used to make progress in uncovering the role of childhood invalidation in BPD.
La Coalición S y el Plan S: Implicaciones para los ecosistemas de conocimiento en América Latina
Authors: López López Wilson
Published: June 2020

Editorial.
Numerical and Experimental Study of Multiphase Transient Core-Annular Flow Patterns in a Spouted Bed
Authors: Zhou Ling , Han Chen , Bai Ling , Shi Weidong , Agarwal Ramesh
Published: June 2020

Dense solid–gas bubbling systems with combined fluid-particle motion are among one of the most extensively used fluidization forms used in the chemical industry. Therefore, it is important to have a good understanding of the hydrodynamic behavior of bubbles. In this paper, both the experiment and numerical simulations are used to investigate the flow patterns in a spouted bed. For numerical simulations, the bidirectional coupling simulations using computational fluid dynamics (CFD) with discrete element method (DEM) are conducted. The results show that the simulations can accurately predict the bubbles morphology compared with the experimental results. When the number of particles is 30,000, only a single core-annular flow pattern appears. When the number of particles is increased to 36,500, the single bubble in the spouted bed transitions into two and a double core-annular flow pattern emerges. As the number of particles is increased to 43,000, a complex multicore-annular flow pattern appears. These flow patterns are also observed in the experiments using high-speed imaging camera. This paper analyzes and explains the causes of these flow phenomena from the dynamic characteristics of particle phase and fluid phase. These results have great significance in providing guidance for optimization of dense phase bubbling spouted beds.
Rifting and subduction records of the Paleo–Tethys in North Laos: Constraints from Late Paleozoic mafic and plagiogranitic magmatism along the Song Ma tectonic zone
Authors: Zhang Yuzhi , Yang Xue , Wang Yuejun , Qian Xin , Wang Yukun , Gou Qiyu , Senebouttalath Vongpaseuth , Zhang Aimei
Published: June 2020

In Southeast Asia, the Jinshajiang–Ailaoshan suture in Southwest China and the Song Ma zone in Vietnam were generally accepted as the amalgamation boundary of the South China and Simao/Indochina blocks. However, the tectonic location of the Paleotethyan suture in North Laos and its tectonic affinity remain ambiguous. To address this issue, we present the geochemical and geochronological data of a set of mafic and plagiogranitic rocks along the Song Ma suture zone in North Laos. Three groups of rocks with distinctive petrological, geochronological, and geochemical signatures were identified. The ca. 370 Ma Group 1 plagioclase amphibolite was preserved as xenoliths in the ca. 260 Ma granitoids. It exhibits a normal mid–oceanic–ridge basalt (N–MORB)-like, multi-elemental pattern with highly positive εNd(t) (+3.3 to +10.7) and εHf(t) (+6.68 to +7.41) values and low δ18O values (5.3‰−5.5‰), that are interpreted as products of the Late Devonian − earliest Carboniferous continental rift setting. The ca. 270 Ma Group 2 gabbro/diabase–diorite exhibits arc-like geochemical affinity with the εNd(t), εHf(t), and δ18O values of –5.85 to –3.76, –3.8 to +3.2, and 6.6‰–7.6‰, respectively. It is derived from the metasomatized wedge. The ca. 260 Ma Group 3 plagiogranite shows Nb-Ta and Ti negative anomalies and positive εNd(t) (+3.21 to +4.21), εHf(t) (+8.4 to +13.6), and δ18O (5.9‰−6.8‰) values, which are indicative of its derivation from mafic oceanic crust in a subduction setting. In combination with the published data, these results support the development of the Carboniferous–Permian Paleotethyan branch in North Laos, which represents the tectonic location of the Song Ma suture zone that spatially connects the Jinshajiang–Ailaoshan suture zone in Southwest China and the Chenxing–Bangxi suture zone in Hainan Island, South China.
Late Cenozoic drainage reorganization of the paleo-Yangtze river constrained by multi-proxy provenance analysis of the Paleo-lake Xigeda
Authors: Deng Bin , Chew David , Mark Chris , Liu Shugen , Cogné Nathan , Jiang Lei , O’Sullivan Gary , Li Zhiwu , Li Jinxi
Published: June 2020

The Late Cenozoic evolution of the major river networks draining eastern Tibet has major tectonic implications for the development of the plateau but remains highly contentious. In this study from the southeastern margin of the Tibetan Plateau, we constrain the evolution of the Paleo-lake Xigeda (recorded by the lacustrine Plio-Pleistocene Xigeda Formation) using combined fission-track (FT) dating, U-Pb and trace-element analysis of detrital apatite, along with U-Pb dating of detrital rutile and zircon. Critically, the detrital apatite U-Pb age data from the Xigeda Formation exhibit a major Late Triassic to Jurassic peak that is also seen in the U-Pb rutile and zircon data. When integrated with apatite fission-track (AFT) age peaks at ca. 60–40 Ma and ca. 20–10 Ma and apatite trace-element analyses, these U-Pb ages support provenance from the Songpan-Ganzi and southern Longmenshan terranes to the north. Thus, the Paleo-Xigeda lake was fed by south-flowing paleo-Dadu and paleo-Yalong rivers during Plio-Pleistocene time. Pliocene tectonic activity on the Xianshuihe-Daliangshan-Xiaojiang fault zone likely formed Paleo-lake Xigeda by damming of the Middle Yangtze River; subsequent capture of the Upper Yangtze by the Middle Yangtze after ca. 1.3 Ma likely breached the Paleo-lake Xigeda.
Seasonal and residential clustering at disease onset of anti-MDA5-associated interstitial lung disease
Authors: Nishina Naoshi , Sato Shinji , Masui Kenichi , Gono Takahisa , Kuwana Masataka
Published: June 2020

Objectives

To investigate whether the onset of polymyositis (PM)/dermatomyositis (DM)-associated interstitial lung disease (ILD) is influenced by season and residence in the context of myositis-specific autoantibodies.

Methods

For patients with PM/DM-associated ILD enrolled in a multicentre cohort, 365 and 481 patients were eligible for seasonal and geographical analysis, respectively, based on the availability of reliable clinical information. The patients were divided into three groups: (1) anti-melanoma differentiation-associated gene 5 (MDA5) antibody-positive patients, (2) anti-aminoacyl tRNA synthetase (anti-ARS) antibody-positive patients and (3) patients negative for those antibodies. Seasonality was assessed by the Rayleigh test. Distance from residence to the nearest waterfront was measured on Google Map and was compared between groups by the exact Wilcoxon rank-sum test.

Results

In anti-MDA5-positive patients, the disease developed more frequently in October–March (p=0.03), whereas a seasonal relationship was not found in the remaining two patient groups. Residence at disease onset in anti-MDA5-positive patients was significantly closer to the waterfront, especially to freshwater, compared with that in anti-ARS-positive or anti-MDA5-/ARS-negative patients (p=0.003 and 0.006, respectively).

Conclusions

Anti-MDA5-associated ILD occurred predominantly from October to March in individuals residing near freshwater, suggesting an environmental influence on the onset of this disease subset.
Large-scale parentage-based tagging and genetic stock identification applied in assessing mixed-stock fisheries and hatchery brood stocks for coho salmon in British Columbia, Canada
Authors: Beacham Terry D. , Jonsen Kim , McIntosh Brenda , Sutherland Ben J.G. , Willis David , Lynch Cheryl , Wallace Colin
Published: June 2020

Direct DNA sequencing is powering a revolution in the application of genetics to resource management, with parentage-based tagging (PBT) increasingly applied to salmon fisheries and hatchery brood stock management and assessment. Genetic stock identification (GSI) and PBT were applied to assessment of 2018 coho salmon (Oncorhynchus kisutch) ocean fisheries and hatchery brood stocks in British Columbia (BC), Canada, with 6391 individuals successfully genotyped in fishery samples and 7805 individuals genotyped in 40 hatchery brood stocks. Population-specific contributions to mixed-stock fisheries and exploitation rates were estimated with coded-wire tags (CWTs) and GSI–PBT technologies for six populations. PBT assignments, verified by CWTs, were 100% accurate for 308 individuals with respect to population of origin and age. There was generally reasonably close agreement of estimated population-specific exploitation rates between CWT and genetic methods. We conclude that a genetic approach can improve upon the results available from the current CWT program for assessment and management of coho salmon fisheries and hatchery brood stocks in BC and provide information critical to aid in implementation of Canada’s Policy for Conservation of Wild Pacific Salmon.
Nest-site selection of a subarctic-breeding shorebird: evidence for tree avoidance without fitness consequences
Authors: Holmes G.I. , Koloski L. , Nol E.
Published: June 2020

Vegetation communities in the subarctic are at risk of change due to climate-driven tree and shrub encroachment. Vegetation change may lead to unsuitable habitat for arctic-breeding birds, many of whom are declining. Although many possible factors are contributing to their decline, loss of breeding habitat could be a major contributor. We examined nest-site selection in Dunlin (Calidris alpina hudsonia (Todd, 1953)), a shorebird that nests in open fen habitats in the Churchill, Manitoba, Canada, region. Our objective was to determine whether this species avoids treed habitats and the possible fitness consequences for this. We examined the role of vegetative horizontal and vertical concealments on nest-site selection and nest fate. Dunlin selected nest sites with lower densities of trees than present at unused sites (40 m radius). Both horizontal and vertical concealments were significantly greater at nests than at unused sites, and horizontal concealment was greatest in the north. No measure of tree density or height, or concealment, significantly predicted nest fate. Although Dunlin appear to select nest sites that may minimize exposure to northerly winds and that may provide cover against potential predators, the current nest-site characteristics are not reinforced by contemporary selection.
Search for a remnant violation of the Pauli exclusion principle in a Roman lead target
Authors: Piscicchia Kristian , Milotti Edoardo , Amirkhani Aidin , Bartalucci Sergio , Bertolucci Sergio , Bazzi Massimiliano , Bragadireanu Mario , Cargnelli Michael , Clozza Alberto , Del Grande Raffaele , De Paolis Luca , Egger Jean-Pierre , Fiorini Carlo , Guaraldo Carlo , Iliescu Mihail , Laubenstein Matthias , Marton Johann , Miliucci Marco , Pichler Andreas , Pietreanu Dorel , Scordo Alessandro , Shi Hexi , Sirghi Diana Laura , Sirghi Florin , Sperandio Laura , Vazquez Doce Oton , Zmeskal Johann , Curceanu Catalina
Published: June 2020

In this paper we report on the results of two analyses of the data taken with a dedicated VIP-Lead experiment at the Gran Sasso National Laboratory of the INFN. We use measurements taken in an environment that is especially well screened from cosmic rays, with a metal target made of “Roman lead” which is characterised by a low level of intrinsic radioactivity. The analyses lead to an improvement, on the upper bounds of the Pauli Exclusion Principle violation for electrons, which is more than one (four) orders of magnitude, when the electron-atom interactions are described in terms of scatterings (or close encounters) respectively.
The origin of proton mass from J/$${\Psi }$$ photo-production data
Authors: Wang Rong , Chen Xurong , Evslin Jarah
Published: June 2020

The trace of the stress tensor characterizes the transformation of a theory under rescaling. In quantum chromodynamics (QCD), this trace contains contributions from the bare masses of the quarks and also from a purely quantum effect, called the QCD trace anomaly. It affects all masses in the theory. We present an estimation of the QCD trace anomaly from the near-threshold $$\hbox {J}/{\Psi }$$

J
/
Ψ

photo-production data of the GlueX experiment, at JLab. We apply a vector meson dominance model to describe the photo-production of $$\hbox {J}/{\Psi }$$

J
/
Ψ

and a running strong coupling which includes the nonperturbative effects in the low $$\mu ^2$$

μ
2

region. Despite the large uncertainty, we find that the experimental data favors a small value of the trace anomaly parameter $$b=0.07\pm 0.17$$

b
=
0.07
±
0.17

. We report the resulting proton mass decompositions at $$\mu ^2=0.41\hbox { GeV}^2$$

μ
2

=
0.41

GeV
2

and $$\mu ^2=4\hbox { GeV}^2$$

μ
2

=
4

GeV
2

.
Deep Support Vector Machines for the Identification of Stress Condition from Electrodermal Activity
Authors: Sánchez-Reolid Roberto , Martínez-Rodrigo Arturo , López María T. , Fernández-Caballero Antonio
Published: June 2020

Early detection of stress condition is beneficial to prevent long-term mental illness like depression and anxiety. This paper introduces an accurate identification of stress/calm condition from electrodermal activity (EDA) signals. The acquisition of EDA signals from a commercial wearable as well as their storage and processing are presented. Several time-domain, frequency-domain and morphological features are extracted over the skin conductance response of the EDA signals. Afterwards, a classification is undergone by using several classical support vector machines (SVMs) and deep support vector machines (D-SVMs). In addition, several binary classifiers are also compared with SVMs in the stress/calm identification task. Moreover, a series of video clips evoking calm and stress conditions have been viewed by 147 volunteers in order to validate the classification results. The highest F1-score obtained for SVMs and D-SVMs are 83% and 92%, respectively. These results demonstrate that not only classical SVMs are appropriate for classification of biomarker signals, but D-SVMs are very competitive in comparison to other classification techniques. In addition, the results have enabled drawing useful considerations for the future use of SVMs and D-SVMs in the specific case of stress/calm identification.
Numerical modeling of planar lead free perovskite solar cell using tungsten disulfide (WS2) as an electron transport layer and Cu2O as a hole transport layer
Authors: Kumar Anjan , Singh Sangeeta
Published: June 2020

Metal halide-perovskite solar cells have managed to attain soaring heights in power conversion efficiency in the past decade, rising from 3.8% to around 24% in 2019. Formal lead-based perovskites have captivated massive attention because of their then toxic nature and short-term stability of fabricated devices. Therefore, lead-free perovskites have drawn the researcher’s interest in recent years. In this work, we projected a unique planar perovskite structure constituted of [Formula: see text] Tungsten Disulfide [Formula: see text] lead-free perovskite[Formula: see text]. Herein, Tungsten Disulfide (WS2) acts as an electron transport layer (ETL) due to its excellent electron transport capability. The cuprous oxide is used as a hole transport layer (HTL) due to its perfect band alignment with perovskites. The proposed structure is quantitatively analyzed using a solar cell capacitance simulator. The simulation carried out revealed that tin halide perovskite (CH3NH3SnI3) is having the great potential to be an absorbent layer. The proposed configuration demonstrated excellent power configuration efficiency (PCE) of 23% at an optimized thickness of different segments. The impact of neutral defect density and position of defect energy level with respect to active layer on device performance was quantitatively analyzed. The results showed that values of performance parameters ([Formula: see text], FF, [Formula: see text] and PCE) of proposed device configurations are drastically reduced with increasing the total defect density of interfacial and perovskite layers. These simulated results will help the researchers working in the specific area of lead-free perovskite solar cell (LFPSC) fabrication.
Optical properties of trirutile structure MgTa2O6 single crystals grown by optical floating zone method
Authors: Huang Litong , Zhou Qiang , Li Fangfei , Li Liang
Published: June 2020

[Formula: see text] single crystals with trirutile structure have been employed as research objects in this paper. The absorbance spectra of the [Formula: see text] crystals are presented and the optical bandgap structures of [Formula: see text] are discussed. Both room temperature and temperature-dependent photoluminescence (PL) of [Formula: see text] single crystals are investigated. Significantly, there are two processes in the emission, and the optical phonon participated procedures are observed and described.
EMH: Extended Mixing H-index centrality for identification important users in social networks based on neighborhood diversity
Authors: Lu Pengli , Dong Chen
Published: June 2020

The rapid expansion of social network provides a suitable platform for users to deliver messages. Through the social network, we can harvest resources and share messages in a very short time. The developing of social network has brought us tremendous conveniences. However, nodes that make up the network have different spreading capability, which are constrained by many factors, and the topological structure of network is the principal element. In order to calculate the importance of nodes in network more accurately, this paper defines the improved H-index (IH) centrality according to the diversity of neighboring nodes, then uses the cumulative centrality (MC) to take all neighboring nodes into consideration, and proposes the extended mixing H-index (EMH) centrality. We evaluate the proposed method by Susceptible–Infected–Recovered (SIR) model and monotonicity which are used to assess accuracy and resolution of the method, respectively. Experimental results indicate that the proposed method is superior to the existing measures of identifying nodes in different networks.
Some exact solutions and infinite conservation laws of an extended KdV integrable system
Authors: Lu Huanhuan , Zhang Yufeng , Mei Jianqin
Published: June 2020

In this paper, we investigate some symmetries and Lie-group transformations of an integrable system by using the symmetry analysis method. It follows that the resulting similarity solutions are obtained by applying the characteristic equations of the symmetries. By applying the software Maple,we work out some exact solutions of the generalized KdV system, including the rational solutions, the periodic solutions, the dark soliton solutions, and so on. Finally, we make use of the self-adjoint operators to investigate the nonlinear self-adjointness and the conservation laws of the generalized KdV integrable system.
Design and Implementation of High-Performance Single-Input Multi-Output High Step-up Non-Isolated DC–DC Converter Topology
Authors: Ravi Kumar P. , Gowri Shankar C.
Published: June 2020

Due to the rapid developments in the field of electric vehicles (EVs), it is necessary to find the alternate source to power the EVs. The energy sources, such as fuel cell (FC) and solar photovoltaics (PV), are preferred; however, these sources produce low output voltage, and it is not sufficient to drive the EVs. The DC–DC converters are used to boost the voltage to the required voltage of the EVs; in addition, the EVs also require multiple output terminals to deliver the power to various parts of the system. Hence, in this paper, a new DC–DC converter topology is proposed to produce the three different output voltages from the single input source. The proposed converter has features such as high voltage gain with less duty cycle, reduced number of components, less power loss, and hence the efficiency. Moreover, the converter is operated with a single MOSFET switch with low [Formula: see text] due to its less voltage stress and high voltage gain. The required voltage gain is achieved by the super-lift (SL) technique, and the converter is also provided with a passive clamp circuit to recover the leakage energy of the coupled inductor. The theoretical analysis of the proposed converter is verified through the experimental prototype of 300 W, and the result proves the converter may be suitable for EV applications and the applications which require multi-level output voltage with a high voltage gain.
Static black holes without spatial isometries: From AdS multipoles to electrovacuum scalarization
Authors: Herdeiro Carlos , Radu Eugen
Published: June 2020

We review recent results on the existence of static black holes (BHs) without spatial isometries in four spacetime dimensions and propose a general framework for their study. These configurations are regular on and outside a horizon of spherical topology. Two different mechanisms allowing for their existence are identified. The first one relies on the presence of a solitonic limit of the BHs; when the solitons have no spatial isometries, the BHs, being a nonlinear bound state between the solitons and a horizon, inherit this property. The second one is related to BH scalarization, and the existence of zero modes of the scalar field without isometries around a spherical horizon. When the zero modes have no spatial isometries, the back-reaction of their nonlinear continuation makes the scalarized BHs inherit the absence of spatial continuous symmetries. A number of general features of the solutions are discussed together with possible generalizations.
Baryonia with open and hidden strange
Authors: Gerasyuta S. M. , Matskevich E. E.
Published: June 2020

The relativistic six-quark equations are found in the framework of the dispersion relation technique. The strange baryonia are constructed without the mixing of the quarks and antiquarks. The relativistic six-quark amplitudes of the strange baryonia with the open and hidden strange are calculated. The poles of these amplitudes determine the masses of strange baryonia. Seventeen masses of baryonia are predicted.
Similarity solutions for magnetogasdynamic cylindrical shock wave in rotating ideal gas using Lie Group theoretic method: Isothermal flow
Authors: Nath G. , Singh Sumeeta
Published: June 2020

The propagation of cylindrical shock wave under the influence of axial magnetic field in rotating medium under isothermal flow condition is investigated. The density, magnetic field and azimuthal and axial components of fluid velocity are assumed to be varying in the undisturbed medium. The arbitrary constants appearing in the expressions for infinitesimals of the Local Lie group of transformations bring about three different cases of solutions, i.e. with power law shock path, exponential law shock path and a particular case of power law shock path. Numerical solutions are obtained in the cases of power law and exponential law shock paths. Distribution of gasdynamical quantities are discussed through figures. The effects of variation in values of Alfven-Mach number [Formula: see text], ambient azimuthal velocity index [Formula: see text] and ambient density index [Formula: see text] are studied on flow variables and on shock strength. The numerical integration is done using software Mathematica. It is obtained that magnetic field has a decaying effect on shock strength. Also, increase in value of ambient density or ambient azimuthal velocity variation index in the case of power law shock path and increase in value of ambient density variation index in case of exponential law shock path have the decaying effect on shock strength.
Generalized ghost Tsallis holographic dark energy model in RS-II braneworld and dynamical Chern-Simons modified gravity
Authors: Jawad Abdul , Hussain Sabir , Rani Shamaila , Qummer Saba
Published: June 2020

In this paper, we studied the cosmological implications of generalized ghost Tsallis holographic dark energy in the framework of Randall–Sundrum II braneworld and Chern–Simons modified gravity in flat FRW universe. We discuss the cosmological parameters like equation of state parameter, deceleration parameter, squared speed of sound, Om-diagnostic and planes like evolving equation of state parameter and statefinders. These models yield useful results in this context.
On almost contact Finsler structures
Authors: Tabatabaeifar Tayebeh , Najafi Behzad , Rafie-Rad Mehdi
Published: June 2020

We introduce almost contact and cosymplectic Finsler manifolds. Then, we characterize almost contact Randers metrics. It is proved that a cosymplectic Finsler manifold of constant flag curvature must have vanishing flag curvature. We prove that every cosymplectic Finsler manifold is a Landsberg space, under a mild condition. Finally, we show that a cosymplectic Finsler manifold is a Douglas space if and only if it is a Berwald space.
Solid-State Microwave Synthesis CuO/CNT: A High-Performance Electrode Material for Supercapacitors
Authors: Tan Xiaoqi , Yue Xiaolei , Yuan Meng , Liu Shuxia , Zhang Yaodong , Li Baobi , Luo Jujie , Guo Qingping
Published: June 2020

CuO/CNT composites were synthesized via simple and rapid microwave approach. The nanocomposites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Further, the electrochemical performances of CuO/CNT composites were evaluated. The prepared samples displayed high specific capacitances of 164.5[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text], during the cycle process, the capacitance value aggrandized to 274.7[Formula: see text]F[Formula: see text]g[Formula: see text], and the capacitance remained at 166% of the primary value after 10 000 turns. Moreover, the CuO/CNT//AC asymmetric supercapacitor (ASC) exhibited an energy density of 17.08[Formula: see text]Wh[Formula: see text]kg[Formula: see text] at 775[Formula: see text]W[Formula: see text]kg[Formula: see text] and excellent electrochemical stability in 6M KOH aqueous electrolyte, showing its enormous potential in energy-storage devices.
Further results on Zagreb eccentricity coindices
Authors: Azari Mahdieh
Published: June 2020

The eccentric connectivity index and second Zagreb eccentricity index are well-known graph invariants defined as the sums of contributions dependent on the eccentricities of adjacent vertices over all edges of a connected graph. The coindices of these invariants have recently been proposed by considering analogous contributions from the pairs of non-adjacent vertices. Here, we obtain several lower and upper bounds on the eccentric connectivity coindex and second Zagreb eccentricity coindex in terms of some graph parameters such as order, size, number of non-adjacent vertex pairs, radius, and diameter, and relate these invariants to some well-known graph invariants such as Zagreb indices and coindices, status connectivity indices and coindices, ordinary and multiplicative Zagreb eccentricity indices, Wiener index, degree distance, total eccentricity, eccentric connectivity index, second eccentric connectivity index, and eccentric-distance sum. Moreover, we compute the values of these coindices for two graph constructions, namely, double graphs and extended double graphs.
Is There an On-the-Run Premium in TIPS?
Authors: Christensen Jens H. E. , Lopez Jose A. , Shultz Patrick J.
Published: June 2020

In the U.S. Treasury market, the most recently issued, or so-called “on-the-run,” security typically trades at a price above those of more seasoned but otherwise comparable securities. This difference is known as the on-the-run premium. In this paper, yield spreads between pairs of Treasury Inflation-Protected Securities (TIPS) with both matching and nearly-matching maturities but of separate vintages are analyzed. Adjusting for differences in conventional liquidity premiums, values of embedded deflation options, and coupon rates, the results show a small, insignificant premium on recently issued TIPS, which leads us to conclude that there is no on-the-run premium in the TIPS market.
Efficacy and Safety of Vaccinations in Systemic Lupus Erythematosus
Authors: Li Philip Hei , Lau Chak-Sing
Published: June 2020

Patients with rheumatological or immunological conditions, such as systemic lupus erythematosus (SLE), are particularly vulnerable to infections either due to the underlying immunological aberrations of the disease itself or treatment-related/iatrogenic immunosuppression. Infections remain the leading cause of morbidity and mortality in SLE patients and appropriate vaccination is of paramount importance. Despite clear guidance for the most common vaccinations, the greatest barrier to appropriate vaccinations likely remains with physician awareness or willingness for recommendation. To address this, we review the current evidence regarding the impact of the most commonly recommended vaccinations on SLE.