bluuebunny/crossref_metadata_2025_split huggingface dataset:
Physico–mechanical properties of poly(ethylene‐co‐vinyl acetate)/acrylonitrile‐butadiene rubber/multi‐walled carbon nanotubes nanocomposites
Authors: Razavi‐Nouri Mohammad , Salavati Masoud 
Published: April 2022

AbstractThe influence of multi‐walled carbon nanotubes (MWCNTs) on thermal, mechanical and wetting properties as well as rheological behavior of poly(ethylene‐co‐vinyl acetate) (EVA)/acrylonitrile‐butadiene rubber nanocomposites were studied. The solid surface free energy (), work of adhesion (), interfacial free energy (), spreading coefficient () and Girifalco‐Good's interaction parameter () were calculated for the materials fabricated. The results showed that the contact angle and decreased; however, , , , and increased with the increase in MWCNTs content. The maximum tensile strength and toughness were obtained for the nanocomposite containing 1 wt% nanofillers. It was also found that both of the relaxation ratio (Rr) and relaxation rate index (n) decreased with increasing in the carbon nanotubes (CNTs) concentration. The results designated that the values of Rr and n for the nanocomposite containing 7 wt% MWCNTs were 19% and 60% smaller than those of the unfilled blend, respectively. The Casson plot analysis indicated that the yield stress of the molten materials incremented with the increase in MWCNTs loading according to a quadratic equation. The analysis of crystallization exotherms and melting endotherms revealed that CNTs triggered the crystallization process at slightly higher temperature, however, melting point slightly and the rate of nucleation noticeably reduced with the increase in the nanofillers content.
Hole transport and current–voltage characteristics of PEO/PVP/cobalt nitrate polymer blend electrolytes
Authors: Kamath Archana , Hundekal Devendrappa 
Published: April 2022

AbstractHole transport properties and Current–Voltage characteristics of the single‐layer device in an inverted structure were investigated with spin‐coated PEO/PVP/Cobalt nitrate polyblend electrolyte film as an active layer. A strong correlation between morphology and ionic conductivity was confirmed through XRD, DSC‐TGA, SEM and fluorescence spectroscopic techniques. The optical band gap values are in good agreement with the electrochemical band gap. Schottky diode measurements confirmed the formation of p‐type semiconductors with PEO/PVP bulk films with cobalt nitrate as a dopant at room temperature. The I‐V characteristics are strongly dependent on the salt concentration in the polymer blend. The parameters of diodes such as barrier height, saturation current, and charge carrier concentration were calculated from I‐V characteristics. From C‐V characteristics a charge carrier concentration in the range of 1022 cm−3 was obtained for the highest concentration of cobalt nitrate salt in the PEO/PVP blend. A very low energy barrier for hole injection at the anode ΔEh = 0.28 eV was observed.
Global prediction of the energy yields for hybrid perovskite/Si tandem and Si heterojunction single solar modules
Authors: Kato Yoshitsune , Katayama Hirotaka , Kobayashi Tomoya , Kozawa Masayuki , Nishigaki Yukinori , Kobayashi Tomonao , Kinden Yosuke , Oiwake Kohei , Ishihara Ryo , Matsui Taisuke , Aya Youichirou , Hashiguchi Taiki , Kanematsu Daiji , Terakawa Akira , Fujiwara Hiroyuki 
Published: April 2022

AbstractA strong expectation exists for a two‐terminal hybrid perovskite/silicon tandem solar cell for generating substantially higher output power. Nevertheless, a high tandem cell efficiency under the standard condition does not guarantee high power generation in outdoor environment due to the requirement of current matching in a tandem device. Here, we predict the global energy yields of hybrid perovskite/Si tandem and Si heterojunction single modules by establishing a new rigorous self‐consistent model that performs full device simulations incorporating all fundamental time‐varying parameters affecting the module power output. In particular, the temperature dependences of the optical and electrical characteristics are modeled explicitly and reliable model parameters are extracted from an industry‐compatible Si heterojunction single cell (23.27% efficiency with a 120 μm wafer thickness), whereas ideal cell characteristics are assumed for a hybrid perovskite top cell. Our simulation approach is justified from the remarkable agreement with experimental results. We find that the tandem architecture improves a module energy yield in all places by a maximum of 1.6 times, compared with a state‐of‐the‐art Si heterojunction single module. Importantly, the annual energy yields of the tandem and single modules scale linearly with annual sun irradiation, even with the requirement of the current matching in the case of the tandem device, and the ratio of the tandem and single energy yields is governed essentially by the module efficiency ratio obtained under standard conditions. We have further revealed the climate‐dependent energy yield variation with a magnitude of ~5% based on Köppen‐Geiger climate classification. Moreover, the optimization of the top‐cell band gap based on real meteorological data shows that the optimum top‐cell gap needs to be increased at a place with a lower solar irradiation.
Bullying in school and cyberbullying among adolescents without and with special educational needs in emotional–social development and in learning in Germany
Authors: Schütz Jessica , Bäker Neele , Koglin Ute 
Published: April 2022

AbstractBullying in school and cyberbullying are highly relevant issues. Students with special educational needs in emotional–social development and learning show individual characteristics that could be risk factors for bullying perpetration and victimization (e.g., externalizing behavior problems or poor social skills). Therefore, the present study was carried out to explore differences in school bullying and cyberbullying between adolescents without and with the aforementioned special educational needs. A cross‐sectional questionnaire study was carried out with N = 649 (Mage = 13.66, SD = 2.17, 61% boys and 39% girls) participants from Lower Saxony (Germany). Analyses of covariance only revealed differences regarding school bullying. Adolescents with special educational needs in emotional–social development were significantly more often bullying perpetrators. For the victim role, there are no differences between the groups without and with special educational needs in emotional–social development and in learning. The externalizing behavior problems of adolescents were considered to be the main predictor of bullying behavior and victim experiences. To imply targeted bullying interventions and preventions further research is needed focusing on characteristics, risk, and protective factors of special educational needs in emotional–social development.
Taking chiral polymers toward immune regulation
Authors: Ahmed Wajiha , Karabaliev Miroslav , Gao Changyou 
Published: April 2022

AbstractThe implanted materials and devices can be recognized by the immune system, which in turn mediate the immune microenvironment of tissues. The immune system in mammals is composed of diverse components such as immune cells, cytokines, radicals and antibodies etc. Chiral polymers with good biocompatibility, tailorable ability and ease of fabrication are excellent candidates for diverse biomedical applications. Different chiral biomaterials have been investigated to study the interactions of immune cells and the resulted immune responses, but the effects of chiral polymers on immune regulation are less tackled. Tailoring the chemical and physical properties of chiral polymers can lead to beneficial immune responses. This review focuses on the different fabrication strategies of chiral polymers and interactions of chiral polymers with immune cells and other biological components. The adhesion and interaction patterns of chiral polymers with immune cells, changes in shapes and characteristics of cells, release or inhibition of cytokines, and resulting response are discussed in the review.
Impact of creative art therapy on fatigue and quality of life in patients treated for localized breast cancer: A randomized study
Authors: Joly Florence , Pasquier David , Levy Christelle , Mousseau Mireille , D’Almeida Marie‐Christine , Noal Sabine , Le Tinier Florence , Geffrelot Julien , Ciais Catherine , Szymczak Viviane , Leon Catherine , Rousselot Marie Pierre , Darbas Stephanie , Hanzen Chantal , Heutte Natacha 
Published: April 2022

AbstractBackgroundArt therapy (AT) as supportive care may help patients cope with cancer treatments. This non‐blinded randomized trial assessed the impact of creative AT on severe fatigue and quality of life (QoL) in localized breast cancer patients undergoing irradiation.Material and Methods320 patients were randomized to an AT group (ATG; 8 weekly sessions starting during irradiation) or to a standard group (SG). The primary endpoint was severe global fatigue (Functional Assessment of Chronic Therapy Fatigue subscale score <37) at 1 month post‐irradiation. Quality of life (Fact‐B), anxiety/depression (Hospital Anxiety and Depression Scale (HADS)) and different dimensions of fatigue 20‐item Multidimensional Fatigue Inventory (MFI‐20) were assessed at 1, 6 and 12 months post‐irradiation. The secondary endpoints, fatigue among patients treated with chemotherapy, QoL (Fact‐B), anxiety/depression (HADS) and different dimensions of fatigue (MFI‐20) at 1, 6 and 12 months post‐irradiation (with post hoc analysis in patients with treated with chemotherapy) were also assessed.Results82% of patients completed ≥8 sessions. Severe initial global fatigue was observed in 43% of patients in each group, and among in 64% of patients whose treatment protocol contained chemotherapy. At 1 month post‐irradiation, 45% in the ATG and 57% of patients in the SG reported severe global fatigue (p = 0.37); among patients with initial severe mental fatigue (MFF), 79% and 44% had improved MFF (p = 0.007) respectively; similarly 79% and 44% with initial poor motivation had better mental motivation (p = 0.03). At 6 and 12 months, social well‐being scores in the ATG were higher (21.3 and 21.4 vs. 19.8 and 19.2, p = 0.05 and p < 0.01) with a significant improvement for patients who had chemotherapy (41% vs. 18%, p = 0.017). A positive association was observed between the number of AT sessions, fatigue and QoL (p < 0.01).ConclusionAT did not significantly improve global severe fatigue among all cancer participants 1 month after radiation therapy, however it had a positive impact on social well‐being and may improve MFF and motivation.
Complex pathways within nested systems: Exploring approaches to centering equity in peer review
Authors: Olitsky Stacy 
Published: April 2022

AbstractIn this essay, I explore some of the insights provided in a set of three manuscripts that focus on centering equity in peer review, authored by Bancroft, Ryoo and Miles, Nkrumah and Mutegi, and Marshall and Salter. I consider various aspects of their arguments, highlighting implications for the procedures and norms of journals and funding organizations and questions for further consideration. Drawing on their findings and analyses, I discuss various recommendations, such as the need to change the rules and norms of peer review to be more equitable, to ensure that reviews are free from race, ethnicity, gender, and other kinds of identity‐related biases, to work towards equitable distribution of the resources, such as advising, mentoring, and valuable feedback, that support fair reviewing, and to establish criteria and rubrics that support research that is conducted in collaboration with communities marginalized in science education. In addition, I raise issues for further consideration, including the evolving relationship between “equity” and “merit” with regard to peer review and the need for centering equity in ways that allow for discussion, debate, and development of the field.
Quality evaluation models or frameworks for open source software: A systematic literature review
Authors: Yılmaz Nebi , Kolukısa Tarhan Ayça 
Published: April 2022

AbstractAs open project repositories have become widespread, evaluating the quality of open source software (OSS) has gained attention in the software community. Despite the variety in quality evaluation models or frameworks (QEMoF) proposed for OSS, their adoption in practice remains limited. To further investigate this argument, a systematic literature review (SLR) has been conducted to characterize the existing QEMoF for OSS, based on particular properties, and to examine comprehensively their content and structure for identifying the gap between theory and practice. In this context, a total of 36 primary studies in the period of 2003–2020 have been analyzed. It has been identified that the majority of QEMoF takes ISO/IEC 9126 as a reference, evaluates community‐based aspects, mostly evaluates maintainability and usability as quality attributes, supports subjective and quantitative evaluations, and faces challenges due to diverse and dynamic nature of OSS products. For a better overview of the state of the art in the field, evaluation criteria for comparing the overall quality of the QEMoF are identified and applied. Finally, overall findings are discussed, and suggestions are provided for practitioners and researchers to formulate more robust studies in the future, which can advance the current situation for the benefit of the software community.
Effects of TiO2@ZnAlSn/PETMP on the properties of plasticized polyvinyl chloride composites
Authors: Gao Li , Jin Dandan , Lu Yunhua , Xu Shiai 
Published: April 2022

AbstractA high content of plasticizers in the polyvinyl chloride (PVC) matrix can affect the mechanical property and flame retardancy of the matrix, and it is challenging to prepare multifunctional additives for plasticized PVC composites. In this study, ternary‐layered double hydroxides loaded with titanium dioxide (TiO2@ZnAlSn) and pentaerythritol tetra‐(mercaptopropionate) (PETMP) were incorporated into plasticized PVC composites and their effects on the mechanical property, thermal stability, flame retardancy and smoke suppression were experimentally and theoretically investigated. The best tensile properties are achieved in the composite with 2 phr TiO2@ZnAlSn and 1.6 phr PETMP. Dynamic mechanical analysis (DMA) and molecular dynamics simulation indicate that TiO2@ZnAlSn and PETMP can enhance the interaction of plasticized PVC composite, and cone calorimeter test shows that they can reduce the total heat release (27.5%) and total smoke production (53.0%) of plasticized PVC composite. The flame‐retardant mechanism is deduced according to the results of scanning electron microscopy (SEM), Raman spectroscopy and pyrolysis/gas chromatography–mass spectrometry (Py/GC–MS). This study provides a novel thermal stabilizer that can improve the mechanical property, flame retardancy and smoke suppression of plasticized PVC composites.
Beyond rules and norms: Heterogeneity, ubiquity, and visibility of groundwaters
Authors: Walsh Casey 
Published: April 2022

AbstractOver the last 150 years or so engineers, farmers, scientists, and many others around the globe have gained access to the waters that lie underground with drilling technology, pumps and cheap energy. Since the mid‐twentieth century, a massive worldwide proliferation of deep wells has redistributed groundwaters away from springs, seeps, wells, and oases, robbing them of the water that supports local sustainable socionatural relations. The idea and social fact of groundwater has emerged in this history, and has three distinguishing features: heterogeneity, ubiquity, and visibility. The failure to halt depletion has prompted a turn to culture in the hope of governing the liquid sustainably. However, rather than grapple with the complexities and contradictions of heterogeneity, ubiquity, and visibility, these efforts take a rather thin view of culture—as rules, norms, and institutions to be studied, codified and deployed to address the crisis. This instrumental understanding of culture as a set of traits to be selectively used for arresting depletion has not proven effective, however, compelling us to rethink our cultural, political, and economic engagements with groundwater.
Chiral models of composite axions and accidental Peccei-Quinn symmetry
Authors: Contino Roberto , Podo Alessandro , Revello Filippo 
Published: April 2022

Abstract
We introduce a class of composite axion models that provide a natural solution to the strong CP problem, and possibly account for the observed dark matter abundance. The QCD axion arises as a composite Nambu-Goldstone boson (NGB) from the dynamics of a chiral gauge theory with a strongly-interacting and confining SU(N) factor and a weakly-interacting U(1), with no fundamental scalar fields. The Peccei-Quinn (PQ) symmetry is accidental and all the mass scales are generated dynamically. We analyze specific models where the PQ symmetry is broken only by operators of dimension 12 or higher. We also classify several other models where the PQ symmetry can be potentially protected up to the dimension 15 or 18 level. Our framework can be easily extended to a scenario where the Standard Model (SM) is unified into a simple gauge group, and we discuss the case of non-supersymmetric SU(5) unification. The GUT models predict the existence of additional pseudo NGBs, parametrically lighter than the GUT and PQ scales, which could have an impact on the cosmological evolution and leave observable signatures. We also clarify the selection rules under which higher-dimensional PQ-violating operators can generate a potential for the axion in the IR, and provide a discussion of the discrete symmetries in composite axion models associated to the number of domain walls. These results can be of general interest for composite axion models based on a QCD-like confining gauge group.
Toeplitz Operators on the Unit Ball with Locally Integrable Symbols
Authors: Hagger R. , Liu C. , Taskinen J. , Virtanen J. A. 
Published: April 2022

AbstractWe study the boundedness of Toeplitz operators $$T_\psi $$

T
ψ

with locally integrable symbols on weighted harmonic Bergman spaces over the unit ball of $${\mathbb {R}}^n$$

R

n

. Generalizing earlier results for analytic function spaces, we derive a general sufficient condition for the boundedness of $$T_\psi $$

T
ψ

in terms of suitable averages of its symbol. We also obtain a similar “vanishing” condition for compactness. Finally, we show how these results can be transferred to the setting of the standard weighted Bergman spaces of analytic functions.
A topological model for the coloured Jones polynomials
Authors: Anghel Cristina Ana-Maria 
Published: April 2022

AbstractIn this paper we will present a homological model for Coloured Jones Polynomials. For each colour $$N \in {\mathbb {N}}$$

N
∈
N

, we will describe the invariant $$J_N(L,q)$$

J
N

(
L
,
q
)

as a graded intersection pairing of certain homology classes in a covering of a configuration space on the punctured disc. This construction is based on the Lawrence representation and a result due to Kohno that relates quantum representations and homological representations of the braid groups.
Paternal eNOS deficiency in mice affects glucose homeostasis and liver glycogen in male offspring without inheritance of eNOS deficiency itself
Authors: Hocher Berthold , Lu Yong-Ping , Reichetzeder Christoph , Zhang Xiaoli , Tsuprykov Oleg , Rahnenführer Jan , Xie Li , Li Jian , Hu Liang , Krämer Bernhard K. , Hasan Ahmed A. 
Published: April 2022

Abstract
Aims/hypothesis
It was shown that maternal endothelial nitric oxide synthase (eNOS) deficiency causes fatty liver disease and numerically lower fasting glucose in female wild-type offspring, suggesting that parental genetic variants may influence the offspring’s phenotype via epigenetic modifications in the offspring despite the absence of a primary genetic defect. The aim of the current study was to analyse whether paternal eNOS deficiency may cause the same phenotype as seen with maternal eNOS deficiency.

Methods
Heterozygous (+/−) male eNOS (Nos3) knockout mice or wild-type male mice were bred with female wild-type mice. The phenotype of wild-type offspring of heterozygous male eNOS knockout mice was compared with offspring from wild-type parents.

Results
Global sperm DNA methylation decreased and sperm microRNA pattern altered substantially. Fasting glucose and liver glycogen storage were increased when analysing wild-type male and female offspring of +/− eNOS fathers. Wild-type male but not female offspring of +/− eNOS fathers had increased fasting insulin and increased insulin after glucose load. Analysing candidate genes for liver fat and carbohydrate metabolism revealed that the expression of genes encoding glucocorticoid receptor (Gr; also known as Nr3c1) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (Pgc1a; also known as Ppargc1a) was increased while DNA methylation of Gr exon 1A and Pgc1a promoter was decreased in the liver of male wild-type offspring of +/− eNOS fathers. The endocrine pancreas in wild-type offspring was not affected.

Conclusions/interpretation
Our study suggests that paternal genetic defects such as eNOS deficiency may alter the epigenome of the sperm without transmission of the paternal genetic defect itself. In later life wild-type male offspring of +/− eNOS fathers developed increased fasting insulin and increased insulin after glucose load. These effects are associated with increased Gr and Pgc1a gene expression due to altered methylation of these genes.

Graphical abstract