Miracle-dz/UniFAR-FTUs huggingface dataset:
Electric-field-induced luminescence quenching in an electroluminescent organic semiconductor

We report on the effect of a static electric field on the photoluminescence (PL) of laddertype poly(paraphenylene) (m-LPPP) in devices of polymer-light-emitting diodes. External electric fields of 4.5 MV/cm reduce the integral PL intensity down to 24% of the zero-field value and alter the shape of the PL spectra. The field-induced PL quenching in the m-LPPP polymer is ascribed to field dissociation of the emitting species. Time-resolved spectroscopy showed that the emission is composed of contributions from the radiative recombination of free singlet excitons and of a second emitting species, which we describe as self-trapped excitons. The observed field-induced changes of the shape of the PL emission can be attributed to the different field response of these two emitting species. Thus the PL emission color can be changed with the electric field in the blue-green spectral range. The magnitude of the binding energy of free singulet excitons is discussed.
Role of a 49 kDa Trypanosoma cruzi Mucin-Associated Surface Protein (MASP49) during the Infection Process and Identification of a Mammalian Cell Surface Receptor

Trypanosoma cruzi is the etiologic agent of Chagas disease, a parasitic disease of great medical importance on the American continent. Trypomastigote infection’s initial step in a mammalian host is vital for the parasite’s life cycle. A trypomastigote’s surface presents many molecules, some of which have been proposed to be involved in the infection process, including a glycoprotein family called mucin-associated surface proteins (MASPs). This work describes a 49-kDa molecule (MASP49) that belongs to this family and is expressed mainly on the surfaces of amastigotes and trypomastigotes but can be found in extracts and the membrane-enriched fractions of epimastigotes. This protein is partially GPI-anchored to the surface and has a role during the internalization process, since its blockade with specific antibodies decreases parasite entry into Vero cells by 62%. This work shows that MASP49 binds to peritoneal macrophages and rat cardiomyocytes, undergoes glycosylation via galactose N-acetylgalactosamine, and can attach to the macrophage murine C-type lectin receptor (mMGL). These results suggest that MASP49 can be considered a virulence factor in T. cruzi, and a better understanding of its role in the infection process is necessary.
Strategy for the Prediction of Typhoon Wind and Storm Surge Height Using the Parametric Typhoon Model: Case Study for Hinnamnor in 2022

The parametric typhoon model is a powerful typhoon prediction and reproduction tool with advantages in accuracy, and computational speed. To simulate typhoons’ horizontal features, the longitude and latitude of the typhoon center, central pressure, radius of maximum wind speed (Rmax), and background states (such as surface air pressure and wind speed) are required. When a typhoon approaches or is predicted to affect Korea, the Korea Meteorological Agency (KMA) notifies the above-mentioned parameters, except for the Rmax and background state. The contribution of background wind and pressure is not very significant; however, Rmax is essential for calculating typhoon winds. Therefore, the optimized Rmax for the typhoons over the past five years was estimated at each time step compared with the in situ wind observation record. After that, a fifth-order polynomial fitting was performed between the estimated Rmax and the radius of strong wind (RSW; >15 m/s) provided by the KMA. Finally, the Rmax was calculated from the RSW via the empirical equation, and the horizontal fields of typhoon Hinnamnor (2211) were reproduced using a parametric model. Furthermore, the ocean storm surge height was adequately simulated in the surge model.
Regression model selection—a residual likelihood approach

Summary. We obtain the residual information criterion RIC, a selection criterion based on the residual log‐likelihood, for regression models including classical regression models, Box–Cox transformation models, weighted regression models and regression models with autoregressive moving average errors. We show that RIC is a consistent criterion, and that simulation studies for each of the four models indicate that RIC provides better model order choices than the Akaike information criterion, corrected Akaike information criterion, final prediction error, Cp and Radj2, except when the sample size is small and the signal‐to‐noise ratio is weak. In this case, none of the criteria performs well. Monte Carlo results also show that RIC is superior to the consistent Bayesian information criterion BIC when the signal‐to‐noise ratio is not weak, and it is comparable with BIC when the signal‐to‐noise ratio is weak and the sample size is large.
Different types of plantar vibration affect gait characteristics differently while walking on different inclines

Background Plantar vibration has been widely used to strengthen the sensation of the somatosensory system, further enhancing balance during walking on a level surface in patients with stroke. However, previous studies with plantar vibration only involved the level surface, which neglected the importance of inclined/declined walking in daily life. Thus, combining the plantar vibration and inclined/declined walking might answer a critical research question: whether different types of plantar vibration had different effects on gait characteristics during walking on different inclines. Methods Eighteen healthy young adults were recruited. Fifteen walking conditions were assigned randomly to these healthy adults (no, sub-, and supra-threshold plantar vibration × five different inclines: +15%, +8%, 0%, −8%, −15% grade). A motion capture system with eight cameras captured 12 retro-reflective markers and measured the stride time, stride length, step width, and respective variabilities. Results A significant interaction between vibration and inclination was observed in the stride time (p < 0.0001) and step width (p = 0.015). Post hoc comparisons found that supra-threshold vibration significantly decreased the stride time (−8%: p < 0.001; −15%: p < 0.001) while the sub-threshold vibration significantly increased the step width (−8%: p = 0.036) in comparison with no plantar vibration. Conclusions When walking downhill, any perceivable (supra-threshold) vibration on the plantar area decreased the stride time. Also, the increase in step width was observed by non-perceivable (sub-threshold) plantar vibration while walking uphill. These observations were crucial as follows: (1) applying sub-threshold plantar vibrations during uphill walking could increase the base of support, and (2) for those who may need challenges in locomotor training, applying supra-threshold vibration during downhill walking could reach this specific training goal.
On testing for multivariate ARCH effects in vector time series models

Using a spectral approach, the authors propose tests to detect multivariate ARCH effects in the residuals from a multivariate regression model. The tests are based on a comparison, via a quadratic norm, between the uniform density and a kernel‐based spectral density estimator of the squared residuals and cross products of residuals. The proposed tests are consistent under an arbitrary fixed alternative. The authors present a new application of the test due to Hosking (1980) which is seen to be a special case of their approach involving the truncated uniform kernel. However, they typically obtain more powerful procedures when using a different weighting. The authors consider especially the procedure of Robinson (1991) for choosing the smoothing parameter of the spectral density estimator. They also introduce a generalized version of the test for ARCH effects due to Ling & Li (1997). They investigate the finite‐sample performance of their tests and compare them to existing tests including those of Ling & Li (1997) and the residual‐based diagnostics of Tse (2002). Finally, they present a financial application.
Comparison of third-order nonlinear optical properties of colloidal gold nanoshells and nanorods

A detailed comparison of third-order nonlinear optical properties of colloidal gold nanoshells (NSs) and gold nanorods (NRs) in water solutions has been carried out with the open- and closed-aperture Z-scan measurements, performed with femtosecond laser pulses over a broad range of wavelengths. Absorption saturation was found to be a dominant effect for all the studied nanoparticles, however two-photon absorption properties are also detected, especially at the shortest wavelengths studied. The value of the merit factor σ2/M (two-photon absorption cross section scaled by the molecular weight) for the NRs (10nm × 35 nm) at 530 nm is 7.5 (GM·mol/g), while for the NSs is 1.9 (GM·mol/g) at the same wavelength.
The effects of continuous size distributions on the rapid flow of inelastic particles

Molecular-dynamics simulations are employed to investigate the stresses and granular energy in granular materials with Gaussian and lognormal size distributions. Specifically, smooth circular disks of uniform material density engaged in unbounded two-dimensional shear flow are simulated using an event-driven algorithm. Particle collisions are treated as hard-sphere collisions and all collisions have the same coefficient of restitution. The resulting stresses, when nondimensionalized with the root-mean-square diameter, are found to remain relatively constant as the widths of the particle size distributions are increased away from the monodisperse limit. As a consequence, the stresses predicted by monodisperse kinetic theory (using the root-mean-square diameter) are reasonably accurate in the Gaussian and lognormal systems studied herein. This width-independent nature of the total stresses is traced to an effective balancing of the stresses between the larger particles, which generate relatively high stresses, and smaller particles, which generate lower stresses. Moreover, similar to binary-sized systems, the granular energy in Gaussian and lognormal systems is found to be unequally distributed among the various sizes of particles, with large particles possessing more granular energy than their smaller counterparts (i.e., an equipartition of energy is not observed). This difference in granular energy between two particles increases with both inelasticity and the size difference.
The rebrightening of a ROSAT-selected tidal disruption event: repeated weak partial disruption flares from a quiescent galaxy?

The ROSAT-selected tidal disruption event (TDE) candidate RX J133157.6-324319.7 (J1331), was detected in 1993 as a bright (0.2–2 keV flux of (1.0 ± 0.1) × 10−12 erg s−1 cm−2), ultra-soft (kT = 0.11 ± 0.03 keV) X-ray flare from a quiescent galaxy (z = 0.05189). During its fifth All-Sky survey (eRASS5) in 2022, SRG/eROSITA detected the repeated flaring of J1331, where it had rebrightened to an observed 0.2–2 keV flux of (6.0 ± 0.7) × 10−13 erg s−1 cm−2, with spectral properties (kT = 0.115 ± 0.007 keV) consistent with the ROSAT-observed flare ∼30 years earlier. In this work, we report on X-ray, UV, optical, and radio observations of this system. During a pointed XMM observation ∼17 days after the eRASS5 detection, J1331 was not detected in the 0.2–2 keV band, constraining the 0.2–2 keV flux to have decayed by a factor of ≳40 over this period. Given the extremely low probability (∼5 × 10−6) of observing two independent full TDEs from the same galaxy over a 30 year period, we consider the variability seen in J1331 to be likely caused by two partial TDEs involving a star on an elliptical orbit around a black hole. J1331-like flares show faster rise and decay timescales ($\mathcal {O}(\mathrm{days})$) compared to standard TDE candidates, with neglible ongoing accretion at late times post-disruption between outbursts.
Nutritional practices of the preschool-aged children and associated factors: A cross-sectional study in Rupandehi district of Nepal

Undernutrition is a common problem among Nepali preschool-aged children. Every parent’s feeding practice should be focused on preventing unhealthy eating behaviors of preschool-aged children as it is very difficult to change it in their later life. This study was carried out to assess the key nutritional practices and associated factors among the 3-5-year-old preschool-aged children from their primary caregivers/mothers by employing a quantitative research method. Data were collected through scheduled interviews and observations from mothers/primary caregivers of 394 preschool-aged children who were selected through a multi-stage random sampling procedure in Rupandehi District of Nepal. Binary logistic regression was done to determine the predictors of nutritional practices of preschool-aged children. A p-value less than 0.05 is considered statistical significance. Economic statuses including caste/ethnicity were the main socio-economic and demographic variables to determine the nutritional practices of the preschool-aged children. Findings of the study indicated that majority of preschool-aged children were found in low-level nutritional practices. The preschoolaged children from marginal economic status, including disadvantage-cohorts of the Terai and Dalit, were the victims of the poor nutritional practices. Hence, community-based nutrition education intervention and mothers/caregivers’ awareness programs on feeding practices may be an incredible effort to improve the nutritional status of preschool-aged children if the program is intervened by targeting the background characteristics of the community group.
Hidradenitis Suppurativa Burdens on Mental Health: A Literature Review of Associated Psychiatric Disorders and Their Pathogenesis

Skin, mental health and the central nervous system (CNS) are connected by a deep link. It is not only the aesthetic and sometimes the disfiguring aspects of dermatological conditions that can cause a severe psychological burden; also, different studies have shown how chronic skin-inflammatory diseases may influence the activity of the CNS and vice versa. Moreover, the skin and brain share a common embryogenic origin. Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease affecting the hair follicles of the apocrine regions. The main clinical features are nodules, abscesses, cysts, fistulae and disfiguring scars. Pain and stinking discharge from fistulae are often present. It is not surprising that the psychological burden associated with HS is frequently a challenge in dermatologists’ daily routines. Patients often suffer from depression and anxiety, but also from substance abuse, psychotic and bipolar disorders and an increased suicide risk. The aim of this article is to review the main psychiatric disorders associated with HS and their pathophysiology. Research on Pubmed was conducted with the key words Hidradenitis suppurativa, psychiatric, depression, anxiety, bipolar, schizophrenia, abuse, suicidal. A high incidence of psychiatric disorders has been described in HS compared to controls. Hidradenitis suppurativa is not a rare disease, and acknowledging the HS psychological burden, psychiatric-associated diseases and associated biomolecular pathways will help dermatologists to better care for their patients.
A trap-based positron beamline for the study of materials

We present the design of a new positron beamline for lifetime and Doppler studies of materials. The design is based on the Surko buffer gas trap system and is capable of producing sub-nanosecond pulses with a spot size at the sample of 10 mm. The present timing resolution of ≈800 ps allows lifetimes as small as 500 ps to be resolved. Typically count rates are between 100 and 150 counts per second.
Optimization of line-tapered MMI devices using a genetic algorithm

We discuss the optimal design of line-tapered multimode interference (MMI) devices using a genetic algorithm (GA). A 1×4 MMI device is designed as a numerical example. Compared with the conventional design based on self-imaging theory, the present method demonstrates superior performance with low insertion loss and small non-uniformity.
Optimized skin optical clearing for optical coherence tomography monitoring of encapsulated drug delivery through the hair follicles

Hair follicles (HF) represent a drug delivery reservoir for improved treatment of skin disorders. Although various particulate systems play an important role in HF‐targeting, their optical monitoring in skin is challenging due to strong light scattering. Optical clearing is an effective approach allowing the increasing of particle detection depth in skin. The enhancement of optical probing depth (OPD) and optical detection depth (ODD) of particle localization using optical coherence tomography (OCT) was evaluated under application of various optical clearing agents (OCAs) together with skin permeability enhancers ex vivo in rats. Efficient OPD increasing was demonstrated for all investigated OCAs. However, skin dehydration under action of hyperosmotic agents led to the worsening of OCT‐contrast in dermis decreasing the ODD. Lipophilic agents provided optical clearing of epidermis without its dehydration. The highest ODD was obtained at application of a PEG‐400/oleic acid mixture. This OCA was tested in vivo showing beneficial ODD and OPD enhancement.
Combination of melatonin and irisin ameliorates lipopolysaccharide‐induced cardiac dysfunction through suppressing the Mst1–JNK pathways

Despite significant advances in therapies in past decades, the mortality rate of septic cardiomyopathy remains high. The aim of this study is to explore the therapeutic effects of combined treatment using melatonin and irisin in a mouse model of lipopolysaccharide (LPS)‐mediated septic cardiomyopathy. Our data found that melatonin and irisin could further attenuate LPS‐induced myocardial depression. Molecular investigation illustrated that melatonin and irisin cotreatment sustained cardiomyocyte viability and improved mitochondrial function under LPS stress. Pathway analysis demonstrated that macrophage‐stimulating 1 (Mst1), which was significantly activated by LPS, was drastically inhibited by melatonin/irisin cotreatment. Mechanically, Mst1 activated c‐Jun N‐terminal kinase (JNK) pathway and the latter induced oxidative stress, adenosine triphosphate metabolism disorder, mitochondrial membrane potential reduction, and cardiomyocyte death activation. Melatonin and irisin cotreatment effectively inhibited the Mst1–JNK pathway and, thus, promoted cardiomyocyte survival and mitochondrial homeostasis. Interestingly, Mst1 overexpression abolished the beneficial effects of melatonin and irisin in vivo and in vitro. Altogether, our results confirmed that melatonin and irisin combination treatment could protect heart against sepsis‐induced myocardial depression via modulating the Mst1–JNK pathways.
Analisis static pada aluminium 5052 dengan variasi sudut menggunakan solidworks Solidworks static study of aluminum 5052 at various angles

In the process of welding, metallic materials are permanently joined or joined together via metallurgical bonds created when the metal is molten or liquid. The least heat treatable alloy kind, AA5052, has the maximum strength. In comparison to most other aluminum grades, it has a higher fatigue strength. Alloy 5052 has great workability and good resistance to saltwater and marine atmosphere corrosion. It is simple to sketch or form into intricate shapes. Software known as Finite Element Analysis (FEA) makes it simple to evaluate simulations in a variety of fields, such as solid mechanics, thermal analysis, heat transport, fluid mechanics
Assessment of Life Quality in Children with Dysphonia Using Modified Pediatric Voice-Related Quality of Life Questionnaire in Serbia

(1) Background: Hoarseness is not uncommon in children, especially at school age, as communication with peers is intensified. It is caused by improper use or overuse of the vocal apparatus. (2) Methods: The study included 85 hoarse children aged 6–12 (study group) and 240 healthy children (control group) of the same age. The study group underwent a detailed medical history, phoniatric examination, larynx fiber endoscopy, allergy treatment and the Pediatric Voice-Related Quality of Life questionnaire, modified by Jasmina Stojanovic. (3) Results: Our modified questionnaire revealed the significance of parental perception of a voice disorder in a child after organized activities. Using our modified questionnaire, we were able to determine the most frequent form of a voice disorder in children—speaking too loudly—is often neglected by the environment and can lead to an overall lower life quality. (4) Conclusions: As the presence of hoarseness impairs the quality of life in the pediatric population, awareness of a voice disorder must be recognized and treated on time to overcome the possible side effects on a child’s psychological and emotional development.
THE KECK LOW-RESOLUTION IMAGING SPECTROMETER

The Low Resolution Imaging Spectrometer (LRIS) for the Cassegrain focus of the Keck 10-meter telescope on Mauna Kea is described. It has an imaging mode so it can also be used for taking direct images. The field of view in both spectrographic and imaging modes is 6 by 7.8 arcmin. It can be used with both conventional slits and custom-punched slit masks. The optical quality of the spectrograph is good enough to take full advantage of the excellent imaging properties of the telescope itself. The detector is a cooled back-illuminated Tektronics Inc. 2048 CCD which gives a sampling rate of 4.685 pixels per arcsec. In the spectrographic mode the spectrograph has a maximum efficiency at the peak of the grating blaze of 32-34% for the two lowest resolution gratings and 28% for the 1200 g/mm grating. This efficiency includes the detector but not the telescope or the atmosphere.
Novel Calibration Method for the Multi-Camera Measurement System

In a multi-camera measurement system, the determination of the external parameters is one of the vital tasks, referred to as the calibration of the system. In this paper, a new geometrical calibration method, which is based on the theory of the vanishing line, is proposed. Using a planar target with three equally spaced parallel lines, the normal vector of the target plane can be confirmed easily in every camera coordinate system of the measurement system. By moving the target into more than two different positions, the rotation matrix can be determined from related theory, i.e., the expression of the same vector in different coordinate systems. Moreover, the translation matrix can be derived from the known distance between the adjacent parallel lines. In this paper, the main factors effecting the calibration are analyzed. Simulations show that the proposed method achieves robustness and accuracy. Experimental results show that the calibration can reach 1.25 mm with the range about 0.5m. Furthermore, this calibration method also can be used for auto-calibration of the multi-camera mefasurement system as the feature of parallels exists widely.
Indigenous Knowledge and Use of Medicinal Plants Among the Kuria Communities in the Tarime and Serengeti Districts of Mara Region, Tanzania

ABSTRACT This study documented indigenous knowledge and use of medicinal plants among the Kuria communities in Mara Region, Tanzania. Ethnobotanical data were collected in collaboration with 20 traditional healers (THs), by jungle-walk-and-identify, field guides and observation, semi-structured interviews, focus group discussions and scientific identification of plants. Kuria medicinal plant healers reported 100 medicinal plants from 34 families. Asteraceae (15%) prevailed, followed by Fabaceae (13%) and Lamiaceae (12%). Herbs constituted the largest fraction (41%), followed by shrubs (27%), trees (24%), grasses (4%), climbers (4%), and ferns (1%). Leaves were the most used plant part. Healers listed about 53 diseases treated with plants.