Miracle-dz/UniFAR-FTUs huggingface dataset:
Optically induced ferro- and antiferromagnetic dynamics in the rare-earth metal dysprosium

Approaching physical limits in speed and size of today's magnetic storage and processing technologies demands new concepts for controlling magnetization and moves researches on optically induced magnetic dynamics. Studies on photoinduced magnetization dynamics and their underlying mechanisms have been primarily performed on ferromagnetic metals. Ferromagnetic dynamics bases on transfer of the conserved angular momentum connected with atomic magnetic moments out of the parallel aligned magnetic system into other degrees of freedom. In this thesis the so far rarely studied response of antiferromagnetic order to ultra-short optical laser pulses in a metal is investigated. The experiments were performed at the FemtoSpex slicing facility at the storage ring BESSY II, an unique source for ultra-short elliptically polarized x-ray pulses. Laser-induced changes of the 4f-magnetic order parameter in ferro- and antiferromagnetic dysprosium (Dy), were studied by x-ray methods, which yield directly comparable quantities. The discovered fundamental differences in the temporal and spatial behavior of ferro- and antiferrmagnetic dynamics are assinged to an additional channel for angular momentum transfer, which reduces the antiferromagnetic order by redistributing angular momentum within the non-parallel aligned magnetic system, and hence conserves the zero net magnetization. It is shown that antiferromagnetic dynamics proceeds considerably faster and more energy-efficient than demagnetization in ferromagnets. By probing antiferromagnetic order in time and space, it is found to be affected along the whole sample depth of an in situ grown 73 nm tick Dy film. Interatomic transfer of angular momentum via fast diffusion of laser-excited 5d electrons is held responsible for the out-most long-ranging effect. Ultrafast ferromagnetic dynamics can be expected to base on the same origin, which however leads to demagnetization only in regions close to interfaces caused by super-diffusive spin transport. Dynamics due to local scattering processes of excited but less mobile electrons, occur in both magnetic alignments only in directly excited regions of the sample and on slower pisosecond timescales. The thesis provides fundamental insights into photoinduced magnetic dynamics by directly comparing ferro- and antiferromagnetic dynamics in the same material and by consideration of the laser-induced magnetic depth profile.
Educator Perspectives and Intention to Adopt OER in Teaching and Learning in Secondary Schools in Mauritius

There has been a growing interest in the use of Open Educational Resources (OER) to support educators to adapt, use, re-use, remix and recontextualise content for teaching and learning. The purpose of this study was to investigate the extent and intent of adoption of OER practices and tools in secondary schools in Mauritius within a sustainable and innovative teaching and learning model. The main objective was to investigate whether the inclusion of OER in teaching could help maintain quality instruction and sustain a viable economic model for learners. Moreover, this study assessed the readiness and attitudes of secondary educators in their intention to adopt OER. A survey was carried out among 271 secondary school educators to determine the influential factors in the intention to adopt OER in teaching. Factor and regression analysis were carried out to estimate the significance of each independent variable. The findings of this study reported that Productivity, Interactivity, Infrastructure and Constraining Factors were among the factors that had a significant effect on teachers’ adoption of OER in their teaching process. Combined with other findings as reported in the literature, this study also helps to enlighten policymakers about teachers’ intention in adopting OER in secondary schools in Mauritius and how they add value to the teaching and learning processes. The Cabinet of Ministers in Mauritius approved the National policy on OER in December 2022.
Psychological Distress and Perceived Stress Outcomes of Anxieties Related to COVID-19 and Russia’s Attack on Ukraine

Abstract In recent years, European societies have been faced with an enormous challenge when the ongoing struggle of the COVID-19 pandemic coincided with the biggest military conflict in the region since World War II, namely Russia’s full-scale attack on Ukraine. As such crises can have a substantial impact on mental health, it is crucial to follow their effect on the population, especially in the circumstances of multiple coexisting threats. Two studies examined the association of COVID-19 anxiety and war-related anxiety with mental health in Finnish population. We found that COVID-19 anxiety and anxiety over Russia’s attack on Ukraine were associated with psychological distress and perceived stress. Moreover, we found an interaction effect on psychological distress consistently in two samples, showing that participants who reported higher COVID-19 and war-related anxiety experienced higher psychological distress. These results show the especially heavy burden that these serious coinciding crises have on the mental health of the population. The findings of the current study provide directions for future research and have implications for practitioners and decision makers alike.
Evaluation of microRNA Expression Features in Patients with Various Types of Arterial Damage: Thoracic Aortic Aneurysm and Coronary Atherosclerosis

Circulating serum miRNA are increasingly used as biomarkers and potential treatment targets in several clinical scenarios, including cardiovascular diseases. However, the current data on circulating miRNA in thoracic aorta aneurism (TAA) patients are inconclusive. The aim of the present study is to compare the levels of several circulating miRNA in patients with degenerative TAA, coronary artery disease (CAD), and controls for special profile identification. We have identified several candidates for the role of new biomarkers: miR-143-3p, miR-181-5p, miR-126-3p, miR-126-5p, miR-145-5p, miR-150-5p, and miR-195-5p. Materials and methods: Serum samples of 100 patients were analyzed, including 388 TAA patients scheduled for elective surgery, 67 patients with stable CAD and 17 controls, were used for miRNA isolation and identification. Results: More specific for TAA with very high predictive ability in ROC analysis was an increase in the levels of miR-21-5p, miR-29b-5p, miR-126-5p/-3p, miR-181b-5p, and miR-92a-3p, with the latter microRNA being investigated as a novel potential marker of TAA for the first time. Conclusion: TAA and CAD patients demonstrated a significant increase in the levels of circulating miR-126-5p/-3p, miR-181b-5p, and miR-29b-3p. More specific for TAA with very high predictive ability in ROC analysis was an increase in the levels of miR-21-5p, -29b-5p, -126-5p/-3p, 181b-5p, and -92a-3p, with the latter microRNA being investigated as a potential marker of TAA for the first time.
Effects of nodal planes on strong-field ionization and high-order-harmonic generation in ring-type molecules

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Development of Plastic/Gelatin Bilayer Active Packaging Film with Antibacterial and Water-Absorbing Functions for Lamb Preservation

Abstract In order to extend the shelf life of refrigerating raw lamb by inhibiting the growth of microorganisms, preventing the oxidation of fat and protein, and absorbing the juice outflow of lamb during storage, an active packaging system based on plastic/gelatin bilayer film with essential oil was developed in this study. Three kinds of petroleum-derived plastic films, oriented polypropylene (OPP), polyethylene terephthalate, and polyethylene, were coated with gelatin to make bilayer films for lamb preservation. The results showed significant improvement in the mechanical properties, oxygen, moisture, and light barriers of the bilayer films compared to the gelatin film. The OPP/gelatin bilayer film was selected for further experiments because of its highest acceptance by panelists. If the amount of juice outflow was less than 350% of the mass of the gelatin layer, it was difficult for the gelatin film to separate from lamb. With the increase in essential oil concentration, the water absorption capacity decreased. The OPP/gelatin bilayer films with 20% mustard or 10% oregano essential oils inhibited the growth of bacteria in lamb and displayed better mechanical properties. Essential oil decreased the brightness and light transmittance of the bilayer films and made the film yellow. In conclusion, our results suggested that the active packaging system based on OPP/gelatin bilayer film was more suitable for raw lamb preservation than single-layer gelatin film or petroleum-derived plastic film, but need further study, including minimizing the amount of essential oil, enhancing the mechanical strength of the gelatin film after water absorption.
Magnon-magnon interactions in a room-temperature magnonic Bose-Einstein condensate

Bose-Einstein condensate of magnons (mBEC) that is formed at room temperature in parametrically pumped magnetic films is double-degenerate: it is formed simultaneously in two spectral minima corresponding to the lowest energy magnons propagating in opposite directions along the in-plane bias magnetic field. In this work the interactions of magnons in the mBEC are studied both theoretically and experimentally. It is shown by direct calculation that the magnons residing in each of the degenerate spectral minima of mBEC form a practically ideal magnon gas, as the attractive self-interaction between these magnons is very weak. At the same time, the interaction between the magnons residing in different spectral minima, corresponding to the opposite directions of the magnon wave vector, is relatively strong and repulsive, leading to a repulsive total inter-magnon interaction. By measuring the spectral characteristics of the mBEC it is shown, that with the increased magnon density the energy per magnon in the mBECs increases, thus confirming experimentally
The tongue morphology of Pteropus vampyrus from Timor Island, Indonesia: New insights from scanning electron and light microscopic studies

Abstract. Selan YN, Wihadmadyatami H, Haryanto A, Kusindarta DL. 2023. The tongue morphology of Pteropus vampyrus from Timor Island, Indonesia: New insights from scanning electron and light microscopic studies. Biodiversitas 24: 3512-3518. The large flying fox (Pteropus vampyrus Linnaeus, 1758) is a Southeast Asian megabat species includes with frugivorous bats. The tongue plays a pivotal role in taking, chewing, and swallowing food. The structure of the bat tongue hampers considerable variation, mainly in the papilla. Variations occur owing to the feeding habits, environment, and adaptation of bats to their environments. The aim of this study was to clarify the morphological structure of the tongue of P. vampyrus obtained from the island of Timor, East Nusa Tenggara, Indonesia, by using Scanning Electron Microscope (SEM) and Light Microscopy(LM). This study included six adult bats regardless of sex. Macroscopically, the tongue of P. vampyrus consists of three parts: the apex, corpus, and radix. SEM and LM confirmed that the apex presents filiform papillae of several subtypes, including scale-like filiform, giant trifid, and small crown-like papillae. In addition, the apex features fungiform and transitional papillae between the giant trifid and small crown-like papillae. Furthermore, the corpus consists of filiform papillae (leaf-like filiform and large crown-like papillae) and fungiform papillae. The radix consists of filiform papillae (long conical, leaf-like filiform, and short conical papillae), fungiform papillae, and three V-shaped circumvallate papillae pointing to the larynx.
Global output feedback control for uncertain nonlinear feedforward systems

ABSTRACT This paper considers a class of uncertain nonlinear feedforward systems with unknown constant growth rate, output polynomial function growth rate and system input function growth rate. Under the most general growth rate condition, only one dynamic gain is used to compensate simultaneously these three types of growth rates, an output feedback controller is constructed to guarantee the boundedness of closed-loop system states and the convergence of original system states.
Association between selenium intake and migraine: a nationwide cross-sectional study

Background Dietary interventions for migraine are receiving increasing attention. However, it remains unclear whether there is any relationship between migraine and selenium intake. The aim of this study was to investigate the association between selenium intake and migraine. Methods We used multivariate logistic regression equations to explore the association between selenium intake and migraine. Restricted cubic splines were used to examine the presence of non-linear relationships. Upon finding a non-linear relationship, a recursive algorithm was used to calculate the inflection point. Population differences were also explored through stratified analysis. Results In the model adjusted for all covariates, the ORs (95% CI) for the association between selenium intake and migraine were 0.96 (0.88, 1.04), which was no statistical significance. However, the result of the linear trend test with quadrilles of selenium intake indicated the association between selenium intake and migraine may be non-linear. The restricted cubic splines confirmed this non-linear relationship, finding an inflection point (93.1 mcg/day), where the odds of migraine decreased with increasing selenium intake before the inflection point, and no statistically significant relationship was found after the inflection point. The association between selenium intake and migraine was non-linear in all strata except the obese. Conclusion We found a non-linear association between selenium intake and migraine in the general American population.
The steady motion of a closely fitting vesicle in a tube

A singular perturbation theory is developed for the steady, inertialess motion of a lipid-bilayer vesicle flowing through a narrow tube. The vesicle is treated as a sac of fluid enclosed by an inextensible membrane that admits a bending stiffness. Matched asymptotic expansions are developed in terms of a clearance parameter $\unicode[STIX]{x1D716}\ll 1$ in order to calculate the flow field and vesicle shape. Mild restrictions are applied to the ratio of viscosities $\unicode[STIX]{x1D705}$ and the ratio of bending stresses to viscous stresses $\unicode[STIX]{x1D6FD}$ ; in particular, the theory holds for $\unicode[STIX]{x1D705}=o(\unicode[STIX]{x1D716}^{-1/2})$ and $\unicode[STIX]{x1D6FD}=O(\unicode[STIX]{x1D716}^{-1})$ . The ratio of the vesicle length to the tube radius $\ell$ is included as a parameter and asymptotic solutions in the limit of negligible bending stiffness are developed for long, cylindrical vesicles and short, spherical vesicles. The main result of the theory is a prediction for the vesicle speed and extra pressure drop due to the presence of the vesicle in the tube. The effects of confinement, vesicle length, and membrane bending elasticity are examined. The theoretical predictions show good agreement with experimental measurements reported for vesicles and red blood cells in highly confined channel flow. Previously reported models for red blood cells (Secomb et al., J. Fluid Mech., vol. 163, 1986, pp. 405–423; Halpern & Secomb, J. Fluid Mech., vol. 203, 1989, pp. 381–400) are clarified and extended in light of the new theory.
MEDIATION OF ORGANIZATIONAL COMMITMENT: EFFECT OF PERCEIVED ORGANIZATIONAL SUPPORT ON ORGANIZATIONAL CITIZENSHIP BEHAVIOR OF PUBLIC SERVICE EMPLOYEES

Organizational citizenship behavior by mediating organizational commitment. The sample used is non- probability sampling with purposive sampling as many as 100 respondents of civil servants throughout Boyolali Regency. This study uses quantitative research methods using questionnaires as data collection materials which were analyzed with the help of IBM SPSS Software Version 23. The results of this study prove that perceived organizational support has a positive and significant effect on organizational citizenship behavior, organizational commitment. positive and significant effect on organizational citizenship behavior, and organizational commitment mediates the relationship between perceived organizational support and organizational citizenship behavior.
The Role of Competence, Psychological Capital, and Intrinsic Motivation Interventions in Influencing Teacher Performance in the Era of the COVID-19 Pandemic

Article history:Received: Revised: Accepted: Keywords: Competence, Psychological Capital, Intrinsic Motivation, Teacher PerformancePurpose – This research aims to determine the role of competence and psychological capital and their impact on teacher performance directly or indirectly via intrinsic motivation, especially during the COVID-19 pandemic era. Methodology/approach – This research method is causal quantitative using a saturated sample of 121 teachers at SD Yayasan Al Azhar Lampung. Using SEM-PLS as a data analysis method with the SmartPLS 3.2. 9 application. Findings – It found a positive and significant role of competency on teacher performance, competency on intrinsic motivation, psychological capital on intrinsic motivation, and intrinsic motivation on teacher performance. Then, the role of psychological capital is not positive and not significant for teacher performance. Also, the indirect relationship formed from this research path is that intrinsic motivation plays a positive and significant role in the relationship between teacher competence to teacher performance, and intrinsic motivation plays a positive and significant role in the relationship between psychological capital and teacher performance. Novelty/value – Motivation intrinsic proven that it can intervene between psychological and teacher performance. Cause without intrinsic motivation, psychological capital hasn't impact on teacher performance.
Electrical detection of ferromagnetic resonance in single layers of permalloy: Evidence of magnonic charge pumping

The generation of a DC voltage in single layers of permalloy (${\mathrm{Ni}}_{81}{\mathrm{Fe}}_{19}$) when the magnetization is undergoing ferromagnetic resonance is investigated in a series of samples with thickness varying from 4.0 to 150 nm. By sweeping the external field at a fixed microwave frequency, we measure a DC voltage at the ends of the layer as a function of the in-plane angle for each sample. The asymmetric voltage signal generated at the resonance field is a superposition of symmetric Lorentzian and antisymmetric Lorentzian derivative line shapes. The in-plane dependence of both symmetric and antisymmetric signals cannot be explained as due to spin rectification (SRE) only. The results are well explained by a model that takes into account in addition to the SRE the contribution of the recent discovered effect of magnonic charge pumping that converts magnetization dynamics into charge current by means of the spin orbit coupling.
Effect of Aging on Intraventricular Kinetic Energy and Energy Dissipation

In recent years, analysis of kinetic energy (KE) and the rate of kinetic energy dissipation (KED) or energy loss (EL) within the cardiac chambers, obtained by cardiac imaging techniques, has gained increasing attention. Thus, there is a need to clarify the effect of physiological variables, specifically aging, on these energetic measures. To elucidate this aspect, we reviewed the literature on this topic. Overall, cardiac magnetic resonance and echocardiographic studies published so far indicate that aging affects the energetics of left and right intraventricular blood flow, although not all energy measures during the cardiac cycle seem to be affected by age in the same way. Current studies, however, have limitations. Additional large, multicenter investigations are needed to test the effect of physiological variables on intraventricular KE and KED/EL measures.
The safety of colorectal cancer surgery during the COVID-19: a systematic review and meta-analysis

Background The ongoing coronavirus disease 2019 (COVID-19) pandemic has placed unprecedented pressure on the healthcare systems. This study evaluated the safety of colorectal cancer (CRC) surgery during the COVID-19 pandemic. Methods A systematic review and meta-analysis were performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines (PROSPERO ID: CRD 42022327968). Relevant articles were systematically searched in the PubMed, Embase, Web of Science, and Cochrane databases. The postoperative complications, anastomotic leakage, postoperative mortality, 30-day readmission, tumor stage, total hospitalization, postoperative hospitalization, preoperative waiting, operation time, and hospitalization in the intensive care unit (ICU) were compared between the pre-pandemic and during the COVID-19 pandemic periods. Results Among the identified 561 articles, 12 met the inclusion criteria. The data indicated that preoperative waiting time related to CRC surgery was higher during the COVID-19 pandemic (MD, 0.99; 95%CI, 0.71–1.28; p < 0.00001). A similar trend was observed for the total operative time (MD, 25.07; 95%CI, 11.14–39.00; p =0.0004), and on T4 tumor stage during the pandemic (OR, 1.77; 95%CI, 1.22–2.59; p=0.003). However, there was no difference in the postoperative complications, postoperative 90-day mortality, anastomotic leakage, and 30-day readmission times between pre-COVID-19 pandemic and during the COVID-19 pandemic periods. Furthermore, there was no difference in the total hospitalization time, postoperative hospitalization time, and hospitalization time in ICU related to CRC surgery before and during the COVID-19 pandemic. Conclusion The COVID-19 pandemic did not affect the safety of CRC surgery. The operation of CRC during the COVID-19 pandemic did not increase postoperative complications, postoperative 90-day mortality, anastomotic leakage, 30-day readmission, the total hospitalization time, postoperative hospitalization time, and postoperative ICU hospitalization time. However, the operation of CRC during COVID-19 pandemic increased T4 of tumor stage during the COVID-19 pandemic. Additionally, the preoperative waiting and operation times were longer during the COVID-19 pandemic. This provides a reference for making CRC surgical strategy in the future. Systematic review registration https://www.crd. york.ac. uk/prospero/, identifier CRD42022327968.