Miracle-dz/UniFAR-FTUs huggingface dataset:
The social dynamics of multiplayer online videogames in Argentinian and Chilean family contexts: The case of Fortnite

The popularity of multiplayer online videogames (MOVs) in the lives of young people has become a recurrent area of interest for parents and researchers. The use of these platforms has generated concerns regarding the potential negative effects on children’s personal and social development. Additionally, the ways in which players socialize through these games has raised questions concerning what are regarded as the most effective approaches to promote a constructive articulation of virtual and physical worlds. Fortnite, was created by Epic Games in 2017. It can be characterized as a social survival gaming experience and has the most remarkable use on a worldwide scale. The study reported here is a qualitative case study that explores the social dimension of the use of Fortnite and how it impacts on children’s and their parents’ perceptions regarding its use. A total of 82 in-depth interviews were conducted in 2019 with Argentinian and Chilean children between 9 and 18 years of age and their parents. Findings reveal that parents and children have diverging perspectives regarding the social dimension of the game’s immersive experience. The topic developed in this article is of particular relevance to parents and researchers given the current events and widescale use of online platforms due to the Covid-19 pandemic.
Synthesis of Polycrystalline LaYO3 with Different Sintering Temperature

Synthesis of LaYO3 was carried out via conventional solid state reaction method. The polycrystalline samples were sintered at temperatures in the range of 1300 °C to 1500 °C with each deviation is 50 °C. X-ray diffraction (XRD) analysis indicated that the perovskite ceramic obtained its single phase at 1500 °C with ordered monoclinic perovskite structure. The pure phase sample showed 98.79 % relative density and scanning electron micrographs also proved that the porosity of the sample reduced when sample undergo sintering.
Concurrent emergence of exotic whitefly incursions on arecanut (Areca catechu L.) in India

Field incidence of exotic whitefly complex comprising two Neotropical nesting whiteflies viz., Paraleyrodes bondari Peracchi and Paraleyrodes minei Iaccarino, in association with invasive rugose spiralling whitefly Aleurodicus rugioperculatus Martin and native areca whitefly, Aleurocanthus arecae David & Manjunatha, on arecanut was reported from Karnataka, India during 2020. These arecanut palms were previously infested by A. arecae which was earlier reported from Karnataka during 2003. To our knowledge, this is the first report on the infestation of P. bondari and P. minei on arecanut as highlighted in this current investigation. Morphological identification based on pupal taxonomy and male genitalia as well as molecular characterization of the mitochondrial cytochrome oxidase I (COI) gene confirmed the identity of nesting whiteflies. The Bondar’s nesting whitefly, P. bondari is the most predominant whitefly species with 87.5 per cent active colonies followed by the nesting whitefly, P. minei (13.64%) and the rugose spiralling whitefly, A. rugioperculatus (6.25%). Co-occurrence of these three non-native whitefly species on arecanut in synergy with the native A. arecae indicates a kind of competitive regulation of one species over the other, upsetting biodiversity. Due to the polyphagous nature of the pest coupled with increased trade and transport in a climate change scenario, this whitefly complex may become a serious threat to arecanut production in India and elsewhere. This requires strict quarantine protocols to avert its spread to other arecanut growing areas.
Fuel adjustment to achieve a smooth net indicated mean effective pressure during mode switching from homogeneous charge compression ignition to conventional diesel compression ignition in a transient hydrocarbon emissions study

For diesel homogeneous charge compression ignition engines, combustion is unstable during the mode-switching process because of an unfavourable evaporation environment, especially at low speeds. Unusual fluctuations in the net indicated mean effective pressure and a spike in the transient emissions occur in the transitional cycles between modes. In this study, first, experiments were performed to characterize the hydrocarbon emissions during the combustion mode-switching process between homogeneous charge compression ignition and conventional diesel compression ignition. The results showed that the hydrocarbon emissions decreased as the speed increased at a constant load. When the load increased at a constant speed, the hydrocarbon emissions decreased. A spike in the hydrocarbon emissions during the transitional cycles was observed at 1000 r/min when mode switching from homogeneous charge compression ignition to compression ignition. Second, based on the spike phenomenon, a method of fuel adjustment was proposed to eliminate the fluctuations in the net indicated mean effective pressure and the spike in the hydrocarbon emissions in the five transitional cycles. Finally, by regulating the fuel adjustment coefficient in the five transitional cycles, the spike phenomenon of the transient hydrocarbon emissions was eliminated, and the fluctuations in the net indicated mean effective pressure decreased. The coefficient of variation in the net indicated mean effective pressure decreased to 2%.
Restricted Oxygen‐Deficient Basins on the Northern European Epicontinental Shelf Across the Toarcian Carbon Isotope Excursion Interval

The worldwide recognition of the Toarcian carbon isotope excursion (T‐CIE) in organic‐rich sedimentary rocks has been linked to an oceanic anoxic event (OAE) which implies the world's deep oceans were anoxic ∼183 Ma. The majority of independent redox observations used to build this argument were mainly obtained from T‐CIE organic‐rich sediments deposited on northern European epicontinental shelf. However, increasing evidence has shown that this shelf had limited connection with the open ocean, making it unsuitable for reconstructing the T‐CIE ocean redox structure. To unveil such controversy, we present integrated δ15Nbulk and δ15Nker from Dotternhausen profile, Germany, combined with literature data from other T‐CIE profiles. Both δ15Nbulk and δ15Nker values are predominantly between +0.3 and +2.5‰. These positive near‐zero δ15N values imply enhanced N2 fixation by cyanobacteria using molybdenum (Mo)‐based nitrogenase to compensate bioavailable N loss following quantitative denitrification and/or anammox in a strongly redox‐stratified marine setting. Such N isotope composition contradicts the typical sedimentary δ15N values (>3‰) induced by partial water‐column denitrification and/or anammox in modern‐ocean oxygen minimum zones. We rather propose the existence of local oxygen‐deficient basins on northern European epicontinental shelf where dissolved N underwent extensive denitrification and/or anammox causing bioavailable N deficiency. Mo‐based diazotrophy thus played a critical role in discriminating N isotope compositions among multiple hydrographically restricted T‐CIE marginal basins. Restricted oxygen‐depleted environments on the northern European epicontinental shelf unlikely represent the open‐ocean redox landscape. The existence of the global OAE thus needs comprehensive redox investigations on Tethys and/or Panthalassa deep‐sea T‐CIE successions to validate.
Best Practices to Address Inequities in Academic Support in the University Access Program

Even though access to higher education (HE) has increased drastically among many institutions globally, some challenges persist, among which are impediments to student success. These challenges could potentially hinder students’ success and impede their smooth articulation to the preferred HE degree. Data were collected through focus group discussions that the Free-Attitude Interview technique facilitated. This study proposes potential strategies for implementing “best practices” to improve students' academic support in the University Access Program (UAP), particularly in the South African context. The proposed “best practices” are based on students who experienced challenges. Among these best practices are that students and tutors need to have regular meetings once or more per week, groups should not include more than fifteen first-year students, a student learning-centered approach should be employed, and students should be partners in the co-creation of the curricula and the co-evaluation of subject-related matters.
Genome-wide investigation and analysis of microsatellites and compound microsatellites in Leptolyngbya species, Cyanobacteria

Microsatellites (simple sequence repeats, SSRs) are ubiquitously distributed in almost all known genomes. Here, the first investigation was designed to examine the SSRs and compound microsatellites (CSSRs) in 36 genomes of Leptolyngbya. The results disclosed diversified patterns of distribution, abundance, density and diversity of SSRs and CSSRs in Leptolyngbya genomes. The numbers of SSRs and CSSRs were extremely uneven distributed among genomes, ranging from 11,086 to 27,292 and from 286 to 1,102, respectively. Mononucleotide SSRs were the most abundant category in 14 genomes, while the other 22 genomes followed the pattern: di- > mono- > trinucleotide SSRs. Both SSRs and CSSRs were overwhelmingly distributed in coding regions. The numbers of SSRs and CSSRs were significantly correlated with genome size (P < 0.01) and but not closely correlated with GC content (P > 0.05). Moreover, the motif (A/T)n and (AG)n was predominant in mononucleotide and dinucleotide SSRs, and unique motifs of CSSRs were identified in 33 genomes. This study provides the first insight into SSRs and CSSRs in Leptolyngbya genomes and will be useful to contribute to future use as molecular markers in closely-related species.
A biomass equation dataset for common shrub species in China

Abstract. Shrub biomass equations provide an accurate, efficient and convenient method in estimating biomass of shrubland ecosystems and biomass of the shrub layer in forest ecosystems at various spatial and temporal scales. In recent decades, many shrub biomass equations have been reported mainly in journals, books and postgraduate's dissertations. However, these biomass equations are applicable for limited shrub species with respect to a large number of shrub species widely distributed in China, which severely restricted the study of terrestrial ecosystem structure and function, such as biomass, production, and carbon budge. Therefore, we firstly carried out a critical review of published literature (from 1982 to 2019) on shrub biomass equations in China, and then developed biomass equations for the dominant shrub species using a unified method based on field measurements of 738 sites in shrubland ecosystems across China. Finally, we constructed the first comprehensive biomass equation dataset for China’s common shrub species. This dataset consists of 822 biomass equations specific to 167 shrub species and has significant representativeness to the geographical, climatic and shrubland vegetation features across China. The dataset is freely available at https://doi.org/10.11922/sciencedb.00641 for noncommercial scientific applications, and this dataset fills a significant gap in woody biomass equations and provides key parameters for biomass estimation in studies on terrestrial ecosystem structure and function.
Major, minor, and trace element analysis of medieval stained glass by flame atomic absorption spectrometry

Procedures are described for the analysis of twelve key elements (na, k, ca, mg, al, fe, mn, pb, zn, cu, co and ni) in medieval stained glass by flame atomic absorption. The composition of twelve glass fragments excavated from scottish cathedral sites are given and considered in terms of plant ash and colorant materials.
The effectiveness of using targeted grazing for vegetation management: a meta‐analysis

The use of targeted grazing to control undesired plants as a component of ecological restoration is gaining in popularity, but there is considerable uncertainty among land managers about the effectiveness of this approach. We synthesized existing literature on the use of livestock (ruminants, swine, and equids) to control undesired plants using a meta‐analysis to address questions about the effectiveness of the approach. Seventy studies matched our inclusion criteria; these comprised 86% peer‐reviewed journal articles and 14% gray literature. Studies were conducted in 17 countries but highly concentrated in the United States and Europe. Cattle, goats, horses, and sheep were used for vegetation management in the studies. Most target plant species were nonnative perennial forbs. Median study duration was 3 years, with a maximum of 10 years. We found that, overall, the use of targeted grazing significantly reduced undesired plants and significantly increased plant species richness. However, several important questions remain. In particular, further research is needed to differentiate temporary defoliation from actual plant mortality, to separate the contributions of native versus nonnative species to gains in plant species richness, and to address longer term outcomes following grazing cessation.
Rheological Behavor of Kaoline Water Suspensions in Presence of Surfactants

Despite the great number of works devoted to the rheological behavior of kaolin water suspensions, there are no general guidelines for regulation of coagulation interaction with the addition of an effective concentration of various surfactants to the system, which can be adsorbed on the surface of a mineral. The article presents the study of interaction of kaolin with different surface activity and surfactants of anionic and nonionic types, which is of interest from both scientific and practical point of view, since it will permit to control the viscosity of compositions. It was found that the addition of an anionic surfactant to a suspension reduces the structure strength, and it occurs with a certain concentration. When the concentration is increased or decreased, the structural strength rises again, and in case of a nonionic surfactant, one can observe a monotonic decrease in the stability of structure. In future we will study the effect of stabilization of the modified kaolin suspensions to maximize the content of solid phase in dispersion while maintaining its sedimentation stability during transportation and processing.
Do I deserve to belong? Migrants’ perspectives on the debate of deservingness and belonging

ABSTRACT The notion of belonging, prominent in social sciences, has been recently used extensively in relation to Central Eastern European migrants in the UK. Whereas the Brexit debates on migration have spotlighted the macro-politics of belonging and the judgments on who deserves to stay and under which conditions, the question of how these discourses of ‘deservingness’ surrounding Brexit may influence the everyday and intimate aspects of belonging among migrants warrants further exploration. Drawing on the interviews with 77 young Polish and Lithuanian migrants in the UK conducted from 2019 to 2020, this article examines how migrants position themselves in relation to the discourses of deservingness and hierarchies of desirability. The focus is also placed on how they negotiate their strategies of (un)belonging to the British society. We argue that the prominence of the deservingness discourse – which has gained momentum in Brexit Britain - entraps migrants in the constant process of boundary making and may prevent them from ever feeling part of the ‘community of value’.
Terahertz Microfluidic Sensing with Dual‐Torus Toroidal Metasurfaces

Toroidal excitation manifests as currents flowing on the surface of a torus along its meridians that are known as poloidal currents. Several intriguing phenomena such as nonradiating anapole excitation, dynamic Aharonov–Bohm effect, and vector potential in the absence of electromagnetic fields occur in the presence of toroidal excitations. Toroidal resonances in metamaterials also offer a platform to probe strong light–matter interactions in its proximity due to the nonradiating confinement of photons. Here, a dual‐torus toroidal flexible metasurface containing an array of overlapped split ring resonators is experimentally demonstrated, which results in strong field confinement for enhanced sensing of polar liquid analytes. Microfluidic integrated dual‐torus toroidal resonance experimentally shows significantly higher sensitivity of 124.3 GHz per refractive index unit compared to a single torus toroidal resonance. Flexible metasurfaces supporting dual torus toroidal resonance can find a wide range of applications in the development of ultrasensitive terahertz molecular sensors for probing real time monitoring of chemicals and biomolecules.
Association between estrogen receptor status and Oncotype Dx breast recurrence score.

e12519 Background: The 21 gene assay Oncotype Dx Breast Recurrence Score (RS) is currently the standard of care to determine if adjuvant chemotherapy is needed in early stage node negative, hormone receptor positive, HER-2 negative breast cancer. In current American society of clinical oncology (ASCO) guidelines there is little or no benefit of adjuvant chemotherapy in patients older than 50 years whose tumors have Oncotype DX RS <26, and for patients 50 years or less whose tumors have Oncotype DX RS <16. We sought to evaluate the percentage of estrogen receptor (ER) expression as a surrogate measure of determining adjuvant chemotherapy by examining the relationship between ER expression and RS. Methods: We identified 301 patients from years 2015 to 2019 from our cancer registry with early stage hormone receptor positive breast cancer and had oncotype DX testing performed. We divided patients into three groups: Group 1 (ERG1) with ER <10%; Group 2 (ERG2) with ER 10-49%; and Group 3 (ERG3) with ER equal or >50%. We also collected information on tumor size (cm), tumor grade, Nottingham score, and ki-67 percentage. A sub-group analysis was performed for patients < 50 years age (n=30). We compared all continuous variables across ER groups using the Kruskal-Wallis rank test and individual between group comparisons using the Wilcoxon rank sum test. All statistical tests performed utilized a two-tailed p value of <0.05 with the Bonferroni correction for multiple comparisons. Results: Among 301 patients with early stage hormone receptor positive breast cancer, 89.1% were ductal, 7.9% lobular, and 2.9% mixed histology. Median age was 68, 58 and 66 for ERG1, ERG2, and ERG3, respectively (p = 0.41). Median RS was 36 (ERG1), 23 (ERG2), and 16 (ERG3) (p = 0.78 for ERG1 vs. ERG2; p = 0.01 for ERG1 vs. ERG3). As expected, tumor grade, tumor size, and Nottingham score decreased significantly from ERG1 to ERG3. For patients <50 years, median age was 44, 46 and 45 for ERG1, ERG2, and ERG3, respectively (p = 0.75). Median RS was 10 (ERG1), 24 (ERG2) and 18 (ERG3) (p = 0.04 for ERG1 vs. ERG2; p = 0.17 for ERG1 vs. ERG3). Conclusions: We found a significant association between estrogen receptor levels and Oncotype Dx recurrence score (RS) in patients with early stage hormone receptor positive breast cancer patients. Further studies are needed to determine the predictive ability of hormone receptor levels on the outcomes of patients treated for early stage hormone receptor positive breast cancer.
HIFI Flight Model Testing at Instrument and Satellite Level

This article gives an overview of the tests performed on the HIFI instrument before and after integration in the Herschel satellite. The test results are compared to the performance requirements. Overall, HIFI complies well with the original requirements. As an example of unexpected test results the effect of unwanted feedback in the amplification circuit on the data quality is discussed. I. INTRODUCTION
Bronze Age and Later Vegetation History on the Limestone Tabular Hills of North-East Yorkshire, UK: Pollen Diagrams from Dalby Forest

Abstract This paper presents the results of palynological investigations on the limestone Tabular Hills of the North York Moors in north-east England. These limestone areas have the highest concentration of post-Mesolithic archaeological sites in this upland region, but because of the geology and paucity of suitable organic deposits they have had almost no palynological research with which to assess the land-use history of these cultures, nor their impacts on the vegetation. This lack of palaeoecological information from the Tabular Hills has been addressed, so that the area’s environmental history can be added to that of the rest of the North York Moors, which is relatively well known. Three pollen profiles have been examined, Yondhead Rigg providing an early Bronze Age to post-Medieval record, Seavy Slack providing a late Iron Age to post-Medieval record, and Dargate Dykes providing a late Medieval to modern record. The combined vegetation history from the three sites indicates a similar story to that from elsewhere on the Moors, with substantial forest disturbance in Bronze Age and Iron Age times, with significant woodland regeneration after each, but with the first main forest clearance phase for agriculture occurring during the Romano-British period, followed by early Medieval woodland regeneration, then extensive clearance in the later Medieval period for some arable cultivation and extensive animal husbandry on the rich calcareous grassland. In each agricultural phase the scale and intensity of disturbance seems to have been greater in these fertile limestone areas than in the rest of the Moors, with their poorer, more acidic soils, but still with an emphasis on stock-rearing and less extensive cultivation. The results will allow a more comprehensive landscape history of the North York Moors to be understood for later prehistory and more recent times.
‘You should tell somebody’: An evaluation of a survivor stories blog project to motivate sexual assault victims

Objective: Sexual assault victims often do not disclose their assaults or seek positive health outcomes. The RAINN Survivor Stories project shares testimonials in the form of online blogs from sexual assault survivors to motivate and encourage others to come forward and disclose their assaults. This study aimed to better understand the themes present in the survivor stories to motivate victims to disclose their assaults and seek positive health outcomes. Design: A theoretical thematic analysis was conducted on blog posts created for the project to identify (a) how the posts tell survivor stories and (b) how the posts model positive health outcomes using social cognitive theory and the disclosure processes model as a guide. Setting: Online setting linked to the rainn.org website. Method: Blog posts were collected for inductive thematic analysis. Themes were identified based on their prevalence in the data and their pertinence to the research questions. Results: Emerging themes included (a) overcoming initial disclosure, (b) overcoming the lasting effects of victimisation, (c) utilising support and (d) advocating for others after assault. Conclusion: Findings offer insight to researchers and practitioners creating media messages for sexual assault victims and other stigmatised groups by expanding understanding of modelled positive health outcomes in media and the disclosure process of victims.