Miracle-dz/UniFAR-FTUs huggingface dataset:
Micromagnetic manipulation and spin excitation of skyrmionic structures

Magnetic skyrmions have attracted signficant research interest across a wide range of fields, from condensed matter physics to material science, since the first observation in 2009. Abundant theoretical, computational, and experimental studies have contributed to this emerging interdiscipline: skyrmionics. In particular, great expectations have been placed on exploiting the physics and dynamics of magnetic skyrmions as potential information carriers. In this paper, we particularly focus on the computational studies of skyrmions during the last decade. After briefly introducing the mechanism of micromagnetic simulations, we review and discuss the manipulation of skyrmions, i.e. their creation, transformation, motion, and spin excitation, by both traditional and advanced methods, including electric currents, magnetic fields, spin waves, microwaves, etc. We take magnetic skyrmion as a typical example, while other skyrmion-related magnetic structures such as skyrmioniums and skyrmion tubes are also slightly involved. Through this review, we hope to give some insights into the further development of magnetic skyrmions in spintronics.
Effective buoyancy and CAPE: Some implications for tropical cyclones

We review the widely used concepts of “buoyancy” and “convective available potential energy” (CAPE) in relation to deep convection in tropical cyclones and discuss their limitations. A fact easily forgotten in applying these concepts is that the buoyancy force of an air parcel, as often defined, is non‐unique because it depends on the arbitrary definition of a reference density field. However, when calculating CAPE, the buoyancy of a lifted air parcel is related to the specific reference density field along a vertical column passing through that parcel. Both concepts can be generalized for a vortical flow and to slantwise ascent of a lifted air parcel in such a flow. In all cases, the air parcel is assumed to have infinitely small dimensions. In this article, we explore the consequences of generalizing buoyancy and CAPE for buoyant regions of finite size that perturb the pressure field in their immediate environment. Quantitative calculations of effective buoyancy, defined as the sum of the conventional buoyancy and the static vertical perturbation pressure gradient force induced by it, are shown for buoyant regions of finite width. For a judicious choice of reference density, the effective buoyancy per unit mass is essentially a unique force, independent of the reference density, but its distribution depends on the horizontal scale of the buoyant region. A corresponding concept of “effective CAPE” is introduced and its relevance to deep convection in tropical cyclones is discussed. The study is conceived as a first step to understanding the decreasing ability of inner‐core deep convection in tropical cyclones to ventilate the mass of air converging in the frictional boundary layer as the vortex matures and decays.
High‐resolution magnetic‐field exposure simulations of automotive inductive power‐transfer systems using a scaled‐frequency finite difference time domain approach with multi‐GPU acceleration

Inductive power transfer technology enables, eg, wireless charging of electric and hybrid vehicles. Proposed systems generally consist of at least 2 geometrically separated loosely coupled air‐cored coils. The charging process at operating frequencies from 80 to 140 kHz potentially exposes humans. The computational simulation of low frequency fields combined with lossy dielectric distributions in such scenarios requires nonstandard numerical approaches. As long as quasi‐static assumptions are valid, the scaled‐frequency finite difference time domain method is suitable for such problems. With additional considerations to the original approach from Gandhi and Chen, based on work from Kaune and Gilles, simulations may include anatomical body models as well as thin metallic sheets, which are quite common in automotive scenarios with thicknesses of 1 to 1.2 mm.
“Effect of grape seed and green tea on shear bond strength of brackets bonded to bleached enamel with and without Lase Peroxide Lite” – An in vitro study

OBJECTIVE: To investigate the effect of antioxidants on shear bond strength of brackets bonded to bleached enamel with and without titanium dioxide nanoparticles (Lase Peroxide Lite). MATERIALS AND METHODS: One hundred and five human maxillary premolars were randomly divided into seven groups (n = 15). Group I served as control, in group II-A bleaching was performed with Opalescent Boost. In group II-B and C, bleaching was performed with Opalescent Boost followed by application of 5% grape seed and 10% green tea extracts, respectively. Group III-A bleaching was performed with Lase Peroxide Lite. Group III-B and III-C bleaching was performed with Lase Peroxide Lite followed by application of 5% grape seed and 10% green tea extracts, respectively. Brackets were bonded with composite resin and cured with light emitting diode (LED) light. Shear bond strength of brackets was tested with a Universal testing machine. RESULTS: There was statistically significant difference in the shear bond strength among the seven groups included in the study. There is a statistically significant decrease in shear bond strength in group II-A (8.2 ± 1.6 Mpa), group III-A (8.6 ± 2.1 Mpa) when compared with group I-A (15.9 ± 1.4 Mpa). Among all experimental groups, group II-A showed the lowest mean shear bond-strength values (8.2 ± 1.6 Mpa) (P < 0.005). Group III-C (14.9 ± 2.2 Mpa) has significantly higher shear bond strength. CONCLUSION: Bleaching reduced the shear bond strength of brackets below acceptable level while application of grape seed and green tea extracts has recovered the shear bond strength.
Cost–Benefit and Cost–Utility Analyses to Demonstrate the Potential Value-for-Money of Supermarket Shelf Tags Promoting Healthier Packaged Products in Australia

The supermarket environment impacts the healthiness of food purchased and consumed. Shelf tags that alert customers to healthier packaged products can improve the healthiness of overall purchases. This study assessed the potential value-for-money of implementing a three-year shelf tag intervention across all major supermarket chains in Australia. Cost–benefit analyses (CBA) and cost–utility analyses (CUA) were conducted based on results of a 12-week non-randomised controlled trial of a shelf tag intervention in seven Australian supermarkets. The change in energy density of all packaged foods purchased during the trial was used to estimate population-level changes in mean daily energy intake. A multi-state, multiple-cohort Markov model estimated the subsequent obesity-related health and healthcare cost outcomes over the lifetime of the 2019 Australian population. The CBA and CUA took societal and healthcare sector perspectives, respectively. The intervention was estimated to produce a mean reduction in population body weight of 1.09 kg. The net present value of the intervention was approximately AUD 17 billion (B). Over 98% of the intervention costs were borne by supermarkets. CUA findings were consistent with the CBA—the intervention was dominant, producing both health benefits and cost-savings. Shelf tags are likely to offer excellent value-for-money from societal and healthcare sector perspectives.
A revision of the red algal genus Ahnfeltia on the Russian coast of the North Pacific

ABSTRACT Until recently, three species of the genus Ahnfeltia were recorded from the Russian Pacific coast: A. fastigiata, A. plicata and A. tobuchiensis. A morphological analysis and DNA-barcoding of Ahnfeltia have revealed another species occurring in this area, A. borealis. The endemic taxon of this region, A. tobuchiensis, is conspecific with A. fastigiata and should be reduced to the varietal level, A. fastigiata var. tobuchiensis, as was previously suggested by Maggs et al. The occurrence of A. plicata in the Northwest Pacific requires confirmation by molecular and morphological data.
role of a personal trainer in achieving marketing, safety, and security goals in sports hotels

A comfortable bed to spend the night in is just one part of a hotel stay. Therefore, people often consider more than just the core product when deciding where to spend the night. The idea is to study how to exercise possibilities affect people’s hotel choices and what kinds of exercise amenities are desired during a hotel stay. Finding an exemplary personal trainer is difficult, with the presence of several coaches. It is necessary to the existence of special professional standards for workers in health centers and clubs, especially since training exerting physical effort is a double-edged sword, and every health problem has its movement program. according to the nature, type, and degree of the health problem. Sports hospitality is one of the most important types of tourism that effectively contributes to the revitalization of tourism, whether internal or external and raises the national economy by holding tournaments and sports competitions to attract large numbers of tourists to participate in these sports tournaments. and profitable trade.
Diagnostic Efficacy of Electrical Impedance Spectroscopy Versus Dermoscopy for Pigmented Skin Lesions: A Pilot Study

Introduction: Electrical impedance spectroscopy (EIS) is a non-invasive diagnostic device that measures the electrical impedance of skin lesions to assist in the detection of melanoma. While this tool has been shown to have a high sensitivity for melanoma diagnosis, data on its impact on clinical decision-making for pigmented skin lesions (PSLs) compared to other diagnostic tools is lacking. To gain further insight into its clinical utility, we conducted a pilot study to evaluate how this technology – specifically, the effect it has on clinical decisions for PSLs – compares to traditional dermoscopy. Methods: Dermatologists, dermatology residents, and medical students completed an online survey eliciting their biopsy decisions for 24 PSLs of varying histopathological diagnoses. Half of the lesions from each diagnosis group were presented as a clinical image with associated dermoscopic image and the other half as a clinical image with the corresponding EIS score. Results: Decisions made with EIS demonstrated a mean sensitivity of 75% for melanomas/severely dysplastic nevi vs. 66% for decisions made with dermoscopy (p=.008). While dermatologists biopsied with similar sensitivities when using EIS or dermoscopy (81% vs. 81%), residents and medical students biopsied with significantly greater sensitivity when using EIS. Respondents who reported rarely using dermoscopy showed the greatest improvement in sensitivity and specificity when using EIS compared to dermoscopy. Conclusion: Given that not all providers are trained in dermoscopy, and our finding that EIS particularly benefits those who infrequently use dermoscopy, EIS may complement dermoscopy by helping a broader range of providers make improved PSL diagnostic decisions.
Career planning, proactivity, self-employability, and labour market: undergraduates’ perceptions

The paper presents empirical research carried out at the university of Padova. It investigates the association between students’ perceptions of the current state of the labour market, and students’ self-perceived employability, career proactivity, career control and positional advantages. It also explores the students’ career planning and its association with some contextual and personal predictors. 2.834 students took part in the survey. Findings show that students with a more positive vision of the labour market reported higher scores in self-perceived employability, career control, and less proactive career attitudes. Some implications are reported. Pianificazione della carriera, proattività, Self-Employability e mercato del lavoro: percezioni di studenti universitari. L’articolo presenta una ricerca empirica svolta presso l’università di Padova. Indaga la relazione tra le percezioni degli studenti sullo stato attuale del mercato del lavoro e dell’employability percepita dagli studenti, la proattività, il controllo della carriera e i vantaggi delle posizioni. Esplora anche la pianificazione della carriera degli studenti e la sua relazione con alcuni predittori contestuali e personali. All’indagine hanno preso parte 2.834 studenti. I risultati mostrano che gli studenti con una visione più positiva del mercato del lavoro hanno riportato punteggi più alti in termini di employability percepita, controllo della carriera e attitudini alla carriera meno proattivi. Si riportano alcune implicazioni.
Study of tRNA-Derived Fragment tRF-20-S998LO9D in Pan-Cancer

Objective The purpose is to study the effect of tRNA-derived fragments (tRFs) on pan-cancer through bioinformatics. Methods The expression information of tRF-20-S998LO9D, a type of tRF-5, was retrieved through MINTbase in pan-cancer and verified by qPCR. We preliminarily explored the effect of tRF-20-S998LO9D on cell proliferation in breast cancer and lung cancer cell lines. Then an online KM-plotter provided by OncotRF was used to discover the prognostic significance. GO/KEGG analyses were executed to predict the potential mechanism of tRF-20-S998LO9D in cancer. Results We found that tRF-20-S998LO9D was highly expressed in a variety of cancers like breast invasive carcinoma, head and neck squamous cell carcinoma, kidney renal clear cell carcinoma, lung squamous cell carcinoma, pheochromocytoma and paraganglioma, and uterine corpus endometrial carcinoma. Inhibition of tRF-20-S998LO9D led to reduced cell proliferation in breast cancer (MCF-7) and lung squamous cell carcinoma (SK-MES-1) cells. Elevated tRF-20-S998LO9D indicated poor prognosis in a variety of cancers. tRF-20-S998LO9D might be involved in multiple cancer-related pathways. Conclusion We concluded that tRF-20-S998LO9D was upregulated and negatively correlated with prognosis of a variety of cancers. It may be a potential cancer-promoting marker in pan-cancer.
Factors Associated with the Implementation of an Improved Community Health Fund in the Ubungo Municipality Area, Dar es Salaam Region, Tanzania

Community-based health insurance schemes help households to afford healthcare services. This paper describes healthcare facilities and community factors that are associated with the Improved Community Health Fund (iCHF) scheme in the Ubungo district of Tanzania. A cross-sectional descriptive study was conducted using online questionnaires that were completed by healthcare providers and community members in public-owned healthcare facilities in the Ubungo Municipal Council district of Dar es Salaam, Tanzania, between October and November 2021. The data were analyzed using descriptive statistics and the chi-squared test of association. We found a statistically significant relationship between income level and satisfaction with the iCHF scheme. For community-related factors, income level was statistically significant in the level of involvement in iCHF implementation among local leaders. Further, income level was statistically significant in relation to community behavior/culture toward the iCHF. Occupation was statistically significant in iCHF implementation, iCHF premiums, and iCHF membership size. A statistically significant relationship was also found between income, iCHF membership size, and iCHF premiums. Moreover, people would be willing to pay the required premiums if the quality of the healthcare services under the iCHF scheme improves. Therefore, the government should allocate resources to reduce the challenges that are facing iCHF implementation, such as the preference for a user fee scheme over the iCHF, the issues that are faced by enrollment officers, and inadequate iCHF premiums and membership size.
EXPLORING RELATIONSHIP POWER IN SUPPLY CHAIN SUSTAINABILITY PRACTICES: A CASE STUDY OF A SOUTH AFRICAN HOSPITAL GROUP

Buyers and suppliers of healthcare products and services are more dependent on each other than ever before for the provision of scarce and unique resources, which highlights the need to implement supply chain sustainability practices. Firms controlling these resources hold excessive power over others. This study adopted resource dependence theory as a theoretical lens to explore the role of relationship power in supply chain sustainability practices between a South African private healthcare provider and its suppliers. The study employed a generic qualitative single-case study design. Semi-structured interviews were used to collect data from 12 participants at various levels of the case organisation’s hierarchy. The main findings revealed several types of environmental and social practice used in the supply chain of the private healthcare provider. Some of the environmental practices were effective waste management and recycling, while the social practices included supplier selection and periodic reviews. The healthcare provider exercised extensive power over its suppliers to implement these practices. By exploring the advantages and disadvantages of sustainability practices, the findings showed that relationship power acted as a driver of supply chain sustainability. Mutual commitment, continuous communication, and training support these practices. Healthcare managers must be aware of the importance of relationship power for supply chain sustainability practices implementation, and are advised to invest time and effort in building buyer—supplier relationships to aid sustainability. This study expands the literature on relationship power in supply chain sustainability practices in an underexplored developing country healthcare context.
Anxiety and Gene Expression Enhancement in Mice Exposed to Glyphosate-Based Herbicide

Growing evidence demonstrates that serotonin (5-HT) depletion increases activity in the amygdala and medial prefrontal cortex (mPFC), ultimately leading to anxiety behavior. Previously, we showed that glyphosate-based herbicides (GBHs) increased anxiety levels and reduced the number of serotoninergic fibers within the mPFCs and amygdalas of exposed mice. However, the impact of this 5-HT depletion following GBH exposure on neuronal activity in these structures is still unknown. In this study, we investigated the effects of GBH on immediate early gene (IEG) activation within the mPFCs and amygdalas of treated mice from juvenile age to adulthood and its subsequent effects on anxiety levels. Mice were treated for subchronic (6 weeks) and chronic (12 weeks) periods with 250 or 500 mg/kg/day of GBH and subjected to behavioral testing using the open field and elevated plus maze paradigms. Then, we analyzed the expression levels of c-Fos and pCREB and established the molecular proxies of neuronal activation within the mPFC and the amygdala. Our data revealed that repeated exposure to GBH triggers anxiogenic behavior in exposed mice. Confocal microscopy investigations into the prelimbic/infralimbic regions of the mPFC and in basolateral/central nuclei of the amygdala disclosed that the behavioral alterations are paralleled by a robust increase in the density and labelling intensity of c-Fos- and pCREB-positive cells. Taken together, these data show that mice exposed to GBH display the hyperactivation of the mPFC–amygdala areas, suggesting that this is a potential mechanism underlying the anxiety-like phenotype.
Compressive Strength and Durability of Bamboo Leaf Ash Concrete

Substitution of Bamboo Leaf Ash (BLA) as a cement substitute is an upcoming research topic. The objective of this paper is to study the feasibility of calcined bamboo leaf ash as a partial substitute to cement and its effect on compressive strength, pozzolanic activity, sorptivity and porosity characteristics in hardened concrete. Cement was replaced with BLA with a percentage of 10% to 30% with a uniform increment of 5%. Fallen dry bamboo leaves burnt in open atmosphere were heated in a muffle furnace for 4 hours at 500°C to induce pozzolanic activity. The grade of concrete was taken in such a way that it will give a characteristic compressive strength of 20 MPa. The chemical composition of BLA was obtained by XRF analysis. The nature of BLA was assessed by XRD analysis and found to have an amorphous structure. The pozzolanic activity was ensured by ASTM lime test (ASTM C311 and ASTM C109). Other durability characteristics, like sorptivity and porosity, were performed as per ASTM guidelines (ASTM C1545 and ASTM C127) to assess the resistance of BLA concrete against sorption and the volume of voids. From the experiments conducted, it was understood that cement could be replaced with BLA till 15% with a little compromise in strength and durability characteristics and that this replacement was found to be an optimum one.
Impact of bias nonstationarity on the performance of uni- and multivariate bias-adjusting methods: a case study on data from Uccle, Belgium

Abstract. Climate change is one of the biggest challenges currently faced by society, with an impact on many systems, such as the hydrological cycle. To assess this impact in a local context, regional climate model (RCM) simulations are often used as input for rainfall-runoff models. However, RCM results are still biased with respect to the observations. Many methods have been developed to adjust these biases, but only during the last few years, methods to adjust biases that account for the correlation between the variables have been proposed. This correlation adjustment is especially important for compound event impact analysis. As an illustration, a hydrological impact assessment exercise is used here, as hydrological models often need multiple locally unbiased input variables to ensure an unbiased output. However, it has been suggested that multivariate bias-adjusting methods may perform poorly under climate change conditions because of bias nonstationarity. In this study, two univariate and four multivariate bias-adjusting methods are compared with respect to their performance under climate change conditions. To this end, a case study is performed using data from the Royal Meteorological Institute of Belgium, located in Uccle. The methods are calibrated in the late 20th century (1970–1989) and validated in the early 21st century (1998–2017), in which the effect of climate change is already visible. The variables adjusted are precipitation, evaporation and temperature, of which the former two are used as input for a rainfall-runoff model, to allow for the validation of the methods on discharge. Although not used for discharge modeling, temperature is a commonly adjusted variable in both uni- and multivariate settings and we therefore also included this variable. The methods are evaluated using indices based on the adjusted variables, the temporal structure, and the multivariate correlation. The Perkins skill score is used to evaluate the full probability density function (PDF). The results show a clear impact of nonstationarity on the bias adjustment. However, the impact varies depending on season and variable: the impact is most visible for precipitation in winter and summer. All methods respond similarly to the bias nonstationarity, with increased biases after adjustment in the validation period in comparison with the calibration period. This should be accounted for in impact models: incorrectly adjusted inputs or forcings will lead to predicted discharges that are biased as well.