bluuebunny/crossref_metadata_2025 huggingface dataset:
The Fast Radio Burst-emitting Magnetar SGR 1935+2154—Proper Motion and Variability from Long-term Hubble Space Telescope Monitoring
Authors: Lyman J. D. , Levan A. J. , Wiersema K. , Kouveliotou C. , Chrimes A. A. , Fruchter A. S.
Published: February 2022

We present deep Hubble Space Telescope (HST) near-infrared (NIR) observations of the magnetar SGR 1935+2154 from 2021 June, approximately 6 yr after the first HST observations, a year after the discovery of fast-radio-burst-like emission from the source, and in a period of exceptional high-frequency activity. Although not directly taken during a bursting period the counterpart is a factor of ∼1.5–2.5 brighter than seen at previous epochs with F140W(AB) = 24.65 ± 0.02 mag. We do not detect significant variations of the NIR counterpart within the course of any one orbit (i.e., on minutes to hour timescales), and contemporaneous X-ray observations show SGR 1935+2154 to be at the quiescent level. With a time baseline of 6 yr from the first identification of the counterpart we place stringent limits on the proper motion (PM) of the source, with a measured PM of μ = 3.1 ± 1.5 mas yr−1. The direction of PM indicates an origin of SGR 1935+2154 very close to the geometric center of SNR G57.2+08, further strengthening their association. At an adopted distance of 6.6 ± 0.7 kpc, the corresponding tangential space velocity is ν

T
= 97 ± 48 km s−1 (corrected for differential Galactic rotation and peculiar solar motion), although its formal statistical determination may be compromised owing to few epochs of observation. The current velocity estimate places it at the low end of the kick distribution for pulsars, and makes it among the lowest known magnetar kicks. When collating the few-magnetar kick constraints available, we find full consistency between the magnetar kick distribution and the much larger pulsar kick sample.
Consistency of von Karman Decay Rate with the Energy Supply Rate and Heating Rate Observed by Parker Solar Probe
Authors: Wu Honghong , Tu Chuanyi , He Jiansen , Wang Xin , Yang Liping
Published: February 2022

The von Kármán-Howarth equations give a starting basis for the classical turbulence theory. The formula for the magnetohydrodynamics von Kármán decay rate represents an energy source in many solar wind models with turbulence as the driver. However, it still lacks the radial trend comparison between the von Kármán decay rate, the energy supply rate, and the perpendicular heating rate based on direct observations of the solar wind. Here we carry out this kind of comparison for the first time using Parker Solar Probe measurements from its first three orbits. We find that the radial variation of the von Kármán decay rate is consistent with that of both the energy supply rate and the heating rate in the slow solar wind. These results support the idea that the von Kármán decay law is an active process responsible for solar wind heating. These results also suggest a new idea that both the von Kármán decay law and the low-frequency break sweeping may be controlled by the same nonlinear process. Some limitations of the present study are also addressed.
Turbulence-dominated Shock Waves: 2D Hybrid Kinetic Simulations
Authors: Nakanotani M. , Zank G. P. , Zhao L.-L.
Published: February 2022

We investigate the interaction of turbulence with shock waves by performing 2D hybrid kinetic simulations. We inject force-free magnetic fields upstream that are unstable to the tearing-mode instability. The magnetic fields evolve into turbulence and interact with a shock wave whose sonic Mach number is 2.4. Turbulence properties, the total and normalized residual energy and the normalized cross helicity, change across the shock wave. While the energy of velocity and magnetic fluctuations is mostly distributed equally upstream, the velocity fluctuations are amplified dominantly downstream of the shock wave. The amplitude of turbulence spectra for magnetic, velocity, and density fluctuations are also increased at the shock wave while their spectral index remains unchanged. We compare our results with the Zank et al. model of turbulence transmission across a shock, and find that it provides a reasonable explanation for the spectral change across the shock wave. We find that particles are efficiently accelerated at the shock front, and a power-law spectrum forms downstream. This can be explained by diffusive shock acceleration, in which particles gain energy by being scattered upstream and downstream of a shock wave. The trajectory of an accelerated particle suggests that upstream turbulence plays a role scattering of particles.
A Robust Identification Method for Hot Subdwarfs Based on Deep Learning
Authors: Tan Lei , Mei Ying , Liu Zhicun , Luo Yangping , Deng Hui , Wang Feng , Deng Linhua , Liu Chao
Published: February 2022

Hot subdwarf stars are a particular type of star that is crucial for studying binary evolution and atmospheric diffusion processes. In recent years, identifying hot subdwarfs by machine-learning methods has become a hot topic, but there are still limitations in automation and accuracy. In this paper, we proposed a robust identification method based on a convolutional neural network. We first constructed the data set using the spectral data of LAMOST DR7-V1. We then constructed a hybrid recognition model including an eight-class classification model and a binary classification model. The model achieved an accuracy of 96.17% on the testing set. To further validate the accuracy of the model, we selected 835 hot subdwarfs that were not involved in the training process from the identified LAMOST catalog (2428, including repeated observations) as the validation set. An accuracy of 96.05% was achieved. On this basis, we used the model to filter and classify all 10,640,255 spectra of LAMOST DR7-V1, and obtained a catalog of 2393 hot subdwarf candidates, of which 2067 have been confirmed. We found 25 new hot subdwarfs among the remaining candidates by manual validation. The overall accuracy of the model is 87.42%. Overall, the model presented in this study can effectively identify specific spectra with robust results and high accuracy, and can be further applied to the classification of large-scale spectra and the search for specific targets.
Allium heterophyllum (Amaryllidaceae), a new species from Henan, China
Authors: Xie Deng-Feng , Cheng Rui-Yu , Price Megan , Chen Jun-Pei , Lei Jia-Qing , Zhang Yi-Yang , He Xing-Jin
Published: February 2022

Allium heterophyllum D.F.Xie & X.J.He, sp. nov. (Amaryllidaceae), is a new species from Henan, China and is described based on morphological and molecular evidence. It is morphologically most similar to A. dumebuchum in the rhomboid scape in cross-section. However, distinctive differences were detected in perianth color, leaf shape and cross-section, flowers’ density as well as flowering season. Similarly, the karyotype of A. heterophyllum is 2n = 2x = 16 and in A. dumebuchum is 2n = 4x = 32. Phylogenetic analysis based on nuclear ribosomal Internal Transcribed Spacers (ITS) and three cpDNA regions strongly supports that A. heterophyllum is a member of Allium section Rhizirideum and sister to the other species of this section (e.g. A. senescens, A. spirale, and A. prostratum). Currently, only one population and approximately 120 individuals were discovered; the development of scenic spots in this region may affect its growth and threaten this population. Therefore, this new species is preliminarily considered as Near Threatened (NT) according to criteria of the IUCN Red List.
Maxillaria anacatalinaportillae (Orchidaceae, Maxillariinae), a new remarkable species from Ecuador
Authors: Lipińska Monika M. , Olędrzyńska Natalia , Portilla Alex , Łuszczek Dorota , Sumbembayev Aidar A. , Szlachetko Dariusz L.
Published: February 2022

Neotropical genus Maxillaria Ruiz & Pav. belongs to one of the most diverse and species-rich groups of orchids. Several of its representatives are popular, horticultural plants with large and showy flowers, often nicely fragranced. It is not uncommon that some distinctly colored individuals are introduced to the commercial market under names of similar, more or less related species, as informal varieties or color forms, largely causing confusion. While investigating the diversity of Maxillaria in Ecuador, we have encountered plants that were commercially referred to as M. sanderiana xanthina. In the course of conducted morphological and micromorphological analyses, we concluded that it is a new, separate species and hereby, we describe it as M. anacatalinaportillae.
Nomenclature and taxonomic identities of Prunus zappeyana and P. zappeyana var. subsimplex (Rosaceae)
Authors: Wu Bao-Huan , Cui Da-Fang , Kang Ming
Published: February 2022

The original specimens of both Prunus zappeyana and P. zappeyana var. subsimplex were found to belong to more than one taxon. In addition, P. zappeyana var. subsimplex was found to be invalid because, when the name was published, two separate descriptions were given to two cited collections, but not to the taxon, making the name unaccompanied with a description or diagnosis of this taxon (Art. 38.1 (a)). Therefore, a lectotype of P. zappeyana was designated under Art. 9.11 of ICN, by which P. zappeyana was placed in the synonymy of P. veitchii.
Contours continuatifs aux frontières prosodiques du français : production et perception par les apprenants japonophones
Authors: Albar Rachel
Published: February 2022

Les contours continuatifs tiennent un rôle primordial en français et sont associés à sa structure prosodique. Dans cet article, nous nous cherchons à savoir comment les apprenants japonophones produisent et perçoivent ces continuations, n’ayant pas d’équivalents dans leur langue maternelle. Nous verrons que s’ils sont capables de produire des montées mélodiques aux frontières prosodiques fortes, ils rencontrent toutefois des difficultés pour distinguer les différents niveaux prosodiques et les associer à différentes forces de continuation.
Les musées d’art contemporain et l’évolution de la médiation face aux injonctions communicationnelles : le cas de la chaîne YouTube du Centre Pompidou
Authors: de Montgolfier Clémence
Published: February 2022

De nombreux musées d’art contemporain sont présents aujourd’hui de manière importante sur Internet et les réseaux sociaux, comme le Centre Pompidou à Paris qui produit et diffuse des contenus audiovisuels sur sa chaîne YouTube. L’approche sémiologique de ces contenus audiovisuels et de leur contexte en ligne montre comment, dans ces vidéos dont le musée est l’énonciateur, la programmation reproduit celle du musée physique et sa temporalité. Leurs visées communicationnelles répondent à des injonctions issues du marketing culturel visant à promouvoir son identité de marque. Elles opèrent de concert une médiation culturelle des expositions, en encourageant les publics à agir comme des participants actifs et en relayant le positionnement artistique de l’institution. Mais le développement d’une interaction avec les publics reste en réalité très limité.
Slavko Ježić entre Vienne et Paris. Un marquis Croate qui traduisait de l’italien et du français. Un George Dandin qui parle slovène
Authors: Smolej Tone
Published: February 2022

En 1916, Slavko Ježić (1895-1969) a achevé son cursus d’études romanes et slaves à l’Université de Vienne en soutenant un thèse de doctorat consacrée à la création littéraire du marquis croate F. Kr. Frankopan (1643-1671), plus connu pour avoir participé à un complot contre les Habsbourgs. En s’intéressant au legs du marquis, Ježić a surtout étudié les retranscriptions des conférences dispensées aux académies italiennes de la cour de Vienne ainsi que la traduction d’un fragment du George Dandin de Molière où le célèbre cocu s’exprime en slovène. En 1921, ayant obtenu une bourse pour étudier à Paris, Ježić a publié un court résumé de sa thèse dans la Revue de littérature comparée .
Premières « Influences orientales » dans la Revue de littérature comparée (1921-1925)
Authors: Daniel Yvan
Published: February 2022

La question des « influences orientales » dans les littératures européennes apparaît dès 1921 dans la Revue de Littérature Comparée , d’abord indirectement à travers les ouvrages signalés dans les bibliographies qui accompagnent chaque numéro. L’« Orient » désigne alors des aires culturelles et linguistiques très larges, du Proche-Orient biblique et musulman jusqu’à l’Asie orientale, en passant par l’Inde. Cet article examine, sur les cinq premières années de la Revue , les premières publications d’études comparatistes sur ce sujet, et s’interroge, plus généralement, sur les débats qui portent à cette période sur les causes et les conséquences de ces échanges de plus en plus fréquents entre l’Europe et le monde oriental et asiatique.
On the reducibility of analytic quasi-periodic systems with Liouvillean basic frequencies
Authors: Zhang Dongfeng , Xu Junxiang
Published: February 2022

In this paper we consider the linear quasi-periodic system

   \begin{document}$ \begin{equation*} \dot{x} = (A+\epsilon P(t)) x, x\in \mathbb{R}^{d}, \end{equation*} $\end{document}

where \begin{document}$ A $\end{document} is a \begin{document}$ d\times d $\end{document} constant matrix with elliptic type, \begin{document}$ P(t) $\end{document} is analytic quasi-periodic with respect to \begin{document}$ t $\end{document} with basic frequencies \begin{document}$ \omega = (1, \alpha), $\end{document} with \begin{document}$ \alpha $\end{document} being irrational, and \begin{document}$ \epsilon $\end{document} is a small perturbation parameter. If some suitable non-resonant conditions and non-degeneracy conditions hold, and the basic frequencies satisfy that \begin{document}$ 0\leq \beta(\alpha) < r, $\end{document} where \begin{document}$ \beta(\alpha) = \limsup\limits_{n\rightarrow \infty}\frac{\ln q_{n+1}}{q_{n}}, $\end{document} \begin{document}$ q_{n} $\end{document} is the sequence of denominations of the best rational approximations for \begin{document}$ \alpha \in \mathbb{R} \setminus\mathbb{Q}, $\end{document} \begin{document}$ r $\end{document} is the initial radius of analytic domain, it is proved that for most sufficiently small \begin{document}$ \epsilon, $\end{document} this system can be reduced to a constant system \begin{document}$ \dot{x} = A^{*}x, x\in \mathbb{R}^{d}, $\end{document} where \begin{document}$ A^{*} $\end{document} is a constant matrix close to \begin{document}$ A. $\end{document} As some applications, we apply our results to quasi-periodic Schrödinger equations with an external parameter to study the Lyapunov stability of the equilibrium and the existence of quasi-periodic solutions.
Least squares estimation for distribution-dependent stochastic differential delay equations
Authors: Hu Yanyan , Xi Fubao , Zhu Min
Published: February 2022

The parametric estimation of drift parameter for distribution - dependent stochastic differential delay equations with a small diffusion is presented. The principle technique of our investigation is to construct an appropriate contrast function and carry out a limiting type of argument to show the consistency and convergence rate of the least squares estimator of the drift parameter via interacting particle systems. In addition, two examples are constructed to demonstrate the effectiveness of our work.
Scientific Aspects of the Indian Vedic Sciences and Their Effect on Stress
Authors: Rastogi Rohit , Chaturvedi D.K. , Rajeshwari T. , Tandon Neeti , Singh Bhavna , Sagar Sheelu , Rastogi Mukund , Rastogi Akshit Rajan , Gupta Neha , Kohli Vrinda , Dhamija Luv
Published: February 2022

Indian Ancient Vedic Science, which has fascinated the world researchers, has become more relevant in the 21st century because of other global crises and threats. It has shown a powerful impact in all the areas of life, especially in curing physical and mental ailments. The various violent incidents in European countries and the USA have forced the world political, religious and science leaders to find alternative remedies. Mental fitness has been a great challenge. Yajna Science has multiple advantages and affirmative responses in this direction. The author's team presents this study that measures Vedic Mantra and Yajna Sciences' effect on stress, anxiety, and checks its impact in a worldwide depression-like scenario. The data analysis and visualizations have been done in python to show the different mental fitness angles, taking various demographic parameters into account.
Utilitarian Ethical Triage Bayesian Decisions With Monetary Value During COVID-19 - A Bayesian Probability Analysis
Authors: Ahmed Shamsuddin , Alsisi Rayan H.
Published: February 2022

Utilitarian ethical triage decisions with monetary value are complex and difficult to estimate, with possible benefits for a patient compared to other patients. The triage includes social and bioethical factors. A new approach addresses risk probabilities to improve triage decisions. Admission to the (ICU) Intensive Care Unit and the allocation of ventilators for patients is based on a risk-based comorbidity score. It takes into account the medical prognosis, social factors, personal and social costs. The rankings of the critical factors among patients with predefined ethical treatment success criteria depend on comorbidity and social circumstances. A sensitivity analysis with regression coefficients shows how the expected monetary value of patents can make a better judgment. Low-ranked patients are on the waiting list as the demand for intensive care units increases dramatically with COVID-19 infected. The problem with utilitarianism ethics is that high net worth patients get an advantage, but needy patients with social liability are given consideration.
Different sieving methods for determining the physical characteristics in ground corn
Authors: Biazzi Heverton Michael , Bee Tubin Jiovani Sergio , Conte Renato Augusto , Robazza Weber da Silva , Paiano Diovani
Published: February 2022

We evaluated various sieving methods to estimate particle size (PS) and geometric standard deviation (GSD) of ground corn. The corn had been previously divided in six fractions and each one ground in a hammermill (1-, 2-, 3-, 4-, 5- or 12-mm sieves). The stacked sieving method, with prior drying at 105ºC without agitators was the reference. We evaluated eight sieving methods, distributed in a factorial design (2 x 2 x 2 x 6), consisting of the following treatments: i) with and without agitators (two 25-mm rubber spheres), ii) with and without previous drying, iii) with a nest of test sieves set in a stacked or reverse, and iv) employing six ground corn degrees, totaling 48 treatments (four replicates). There was a linear increase in PS estimation for methods without drying and stacking and quadratic increases for the others. Reverse, drying, and agitator methodologies gave better sieving of corn, and consequently gave the lowest PS and highest GSD. The results were more pronounced for high-intensity grinding (hammermill sieve with small apertures) in which the differences between the reference method with the drying and reverse methods were up to 210 µm. Reverse sieving combined with agitators allowed the greatest passage of corn particles through the test sieves and promoted better characterization of ground corn.
Socio-environmental and parasitological aspects of waste pickers in Minas Gerais, Brazil
Authors: Duarte Maria Clara Lana , Vieira Fâmela Ingrid Gomes , Braga Daiane Cristina de Assis , Bastos Juliana Cristina dos Santos Almeida , Perasoli Fernanda Barçante , Silva Luan Silvestro Bianchini , Rodrigues-das-Dôres Rosana Gonçalves , Pinto Lorena Cristina Lana
Published: February 2022

The increase in the generation of Solid Urban Waste causes social, environmental problems and damages to the population's health. Professionals who work in the collection of recyclable waste are exposed to risks of contamination either by toxic elements or pathogenic organisms. The objective of the work was to estimate the types and prevalence of intestinal parasites in waste pickers. A field research was carried out from December 2017 to April 2018 with the voluntary participation of 26 waste pickers belonging to three associations in the municipality of Conselheiro Lafaiete, Minas Gerais, Brazil (CAAE: nº 79937817.7.0000.8122). In addition to the application a socio-environmental questionnaire, each volunteer provided a stool sample for laboratory testing the parasitological examination. Of the 26 survey participants, four (15.4%) had a positive result and were infected by the parasites Giardia lamblia, Entamoeba coli and Iodamoeba butschlii. Among the main factors that can contribute to the infection these waste pickers are the ingestion of untreated water for consumption in addition to reduced access to Personal Protective Equipment (PPE) during waste management. One way to control the presence of parasites would be through health and environmental education actions, periodic parasitological examinations and permanent use of PPE.
Sociodemographic and pharmacoepidemiological profile of people on antiretroviral therapy in the coast of the state of Paraná
Authors: Silva Marlon , Dias Frederico Alves , Testoni Caroline Fournier , Höfelmann Doroteia Aparecida , Rattmann Yanna Dantas
Published: February 2022

The aim of this study was to investigate possible factors related to antiretroviral therapy (ART) that contribute to the understanding of the highest rate of Aids detection on the coast of the state of Paraná, a port region identified administratively as the 1st Regional Health Division (1st HD) in the state of Paraná. Data on the sociodemographic profile of the population undergoing antiretroviral treatment (ART), medication changes, dropout of therapy, proportion of the population undergoing treatment and viral load were obtained through computerized systems. Between July 1, 2018 and June 31, 2019, 1,393 people were on ART in the 1st RS. Of these, 57.6% were male. During this period, 110 people started ART with a predominance of the age group between 30 and 39 years old. ART was switched for 169 people and 211 patient dropouts were detected. The proportion of people diagnosed with HIV without treatment (gap) is still high, however 92.7% people on ART have suppressed viral load. It can be concluded that the lower educational level of the population undergoing treatment, the late diagnosis of those infected and the treatment gap probably contribute to the highest rate of Aids detection in the 1st RS.
Formulation optimization of low-fat emulsion stabilized by rocket seed (Eruca Sativa Mill) gum as novel natural fat replacer: effect on steady, dynamic and thixotropic behavior
Authors: Akgül Cansu , Akçiçek Alican , Karadağ Ayse , Karasu Salih
Published: February 2022

This study aims to investigate the use of Rocket seed (Eruca Sativa Mill) gum (RSG) as a novel fat replacer in the formulation of low-fat emulsion. For this purpose, formulation of the salad dressing was optimized by using response surface methodology (RSM) based on the rheological properties measured by steady shear (K), dynamic rheological analysis (K', K''), and three interval time test (Deformation (%) and Recovery (%)). All samples showed shear-thinning character and viscoelastic solid character. Herschel Buckley model parameters, namely, t0, K, and n values, were changed between 0.36 and 12.58 Pa, 1.67, and 27. 12 Pa.sn, 0.15 and 0.27 respectively. In all samples, the G' value was higher than G'' in all frequency range. The samples containing high RSG showed a lower percentage of deformation (Def %) and higher recovery (Rec %) values. Optimization was performed based on the rheological properties of the control samples, and the optimum formulation of low salad dressing was 3.73 % RSG, 10 % oil, and 1 % EYP. Low-fat salad dressing samples stabilized by RSG and control samples showed similar characteristics in terms of particle size, PDI, zeta potential, and emulsion stability index values. This study suggested that RSG could be used as a natural fat replacer in low-fat salad dressing type emulsions.
Pulsed electric field for Escherichia coli inactivation in pumpkin juice and nectar
Authors: Santos Júnior Luís Carlos Oliveira dos , Schulz Matthias , Knorr Dietrich , Amante Edna Regina
Published: February 2022

In this study experiments were performed using a batch pulsed electric field (PEF) system at different electric field strengths with a voltage of 35 kV and pulse frequency of 3 Hz, at 20 and 40°C, with pulse width between 0.8 and 1.0 µs, to evaluate the inactivation of Escherichia coli in pumpkin juice and nectar. The performance of the PEF technology can vary as a function of several process parameters and the conditions and procedures applied. The physicochemical characteristics (pH, total soluble solids, electrical conductivity) of the pumpkin juice were also evaluated. The juice showed 5.01 ± 0.01 of pH, 10.70 ± 0.11 (mS cm-1) of electric conductivity and 9.85 ± 0.07 of soluble solids while in nectar, these parameters were changed to 5.11 ± 0.01 of pH, 8.54 ± 0.21 of electric conductivity and 6.40 ± 0.12 of soluble solids.  The use of a temperature of 40°C and pumpkin nectar (70:30, juice: distilled water) showed no difference in the bacterial reduction compared to 20°C and using 100% pumpkin juice, since in non-thermal processes it is better to use lower temperatures for less energy expenditure and less possibility of changes in raw material. The data showed that the PEF treatment reduced the microbial load moderately in all experiments, by a maximum of approximately 2.5 - 3 log cycles with 80 J g-1 of specific energy and above 26,000 V cm-1 of field strength
Agroindustrial co-products and waste cooking oil in the production of lipases by thermophilic Bacillus licheniformis SMIA-3
Authors: Carvalho Aparecida Selsiane Sousa , Cruz Erica , Andrade Vanessa Vicente Vieira , Serra Josilene Lima , Martins Marco Antonio , Martins Meire Lelis Leal , Moraes Luana Pereira de
Published: February 2022

The present study investigated the potential lipase production for Bacillus licheniformis SMIA-3 using the agro-industrial co-products: orange flour (OF) and grape flour (GF) blend waste cooking oil (WCO). The OF was selected due to its best source for lipase production observed in preliminary tests. Therefore, OF was tested at different fermentation times at 50°C using the statistical design Central Composite Rotatable Design (CCRD) allied to the response surface. An optimal region was found with lipolytic activity of 0.349 U mL-1 with OF and WCO filters around (0.50% w v-1) and between (0.55 and 0.75% w v-1), respectively, and the fermentation time at the central point (42h). Data supplied a method to produce lipase using orange flour and frying oil, as a way to reuse these waste as feedstock to obtain employable lipase and lower production costs with biotechnological applications in industrial sector
Cascading effects of COVID-19 on population mobility and air quality: An exploration including place characteristics using geovisualization
Authors: Atkinson Samuel F. , Kala Abhishek K. , Tiwari Chetan
Published: February 2022

This study hypothesizes that public health responses to coronavirus disease 2019 (COVID-19), including a mandated restriction of activity (commonly called a ‘lockdown’) resulted in reduced transportation activities and changes in air quality in Texas, USA. This presented a natural experiment where population mobility and air quality before and after the lockdown could be compared. Changes in mobility were measured by SafeGraph mobility data (from opt-in smart phone applications that transmit location data) and air quality changes were based on NO2 concentrations measured by the European Space Agency’s Sentinel-5 Precursor satellite (from the TROPOspheric Monitoring Instrument). The changes in population mobility and NO2 concentration between mid-March 2020 (lockdown initiated) and the end of 2020, as compared to the same time window in 2019, were the basis of exploring the lockdown hypothesis. Additionally, numerous socio-economic (place based) indicators were hypothesized to follow public health vulnerability assumptions based on COVID- 19 incidence patterns. This hypothesis was subjected to geovisualization techniques in order to find potential patterns and insights into the complex combinations of these place-based data. Our results suggest that simultaneously visualizing COVID-19, mobility, air quality and socio-economic data yields insights in underlying spatial processes related to public health policy decisions. The hypothesis that the lockdown resulted in reduced mobility and NO2 concentrations was found partially correct - this trend was observed in highly urbanized areas, but not in less populated areas. Data related public health vulnerability assumptions (e.g. a region’s age, poverty, education, etc.) were agreed with in part, but disagreed with in part.
Commento al caso clinico: Setting ad assetto variabile. La chat dei sogni in psicoterapia: il caso di Adriana
Authors: Bruschi Gianfranco
Published: February 2022

Non disponibile
Commento al caso clinico: Setting ad assetto variabile. La chat dei sogni in psicoterapia: il caso di Adriana
Authors: Giampietri Roberta
Published: February 2022

Non disponibile
Editoriale
Authors: Vanni Fabio
Published: February 2022

Non disponibile
Per sviluppare la pratica clinica è necessario più lavoro familiare e più lavoro all’interno del sistema. Commento a Parrella, Riefolo e Vincenti
Authors: Seikkula Jaakko
Published: February 2022

Non disponibile
Bathymetry of Pangnirtung Fiord, Cumberland Sound, Nunavut
Authors: Sedore P , Normandeau A , Maselli V , Regular K
Published: February 2022

This map depicts the multibeam bathymetry data acquired in September 2019 onboard the R/V Nuliajuk in Pangnirtung Fiord, Cumberland Sound. The mapped area extends from the head of the fiord, where the Weasel River drains the surrounding highlands, to Cumberland
Sound. The Hamlet of Pangnirtung rests on the SE shore of Pangnirtung Fiord. Glacial landforms and modern sediment processes are identified throughout the fiord using sub-bottom profiles and multibeam bathymetry.
A cross-sectional study on the use of near-visual display devices in the Middle-Eastern children population
Authors: Maher Thuraya N. , Khan M. Irfan , Azzam Noor
Published: February 2022

PURPOSE:

The objective of the study is to highlight the demographics, awareness of hazards, ocular symptoms, and healthy practices associated with the use of near-visual display devices (NVDD) in the Middle-Eastern children population.

METHODS:

Two hundred and sixty participants aged 4–16 years responded to a questionnaire on demographic aspects, symptoms, awareness of hazards, and healthy practices associated with the use of NVDD.

RESULTS:

Daily use, prolonged viewing (for 3 h or more), and the use of multiple NVDD (2 or more) were seen in the majority (79.6%, 90%, and 71.5%, respectively). Smartphones, tablets, and iPads were the most used devices. Symptoms were present in 92.3%. The association between appearance of symptoms and duration of exposure to the digital screen was statistically significant (P < 0.00001). Symptoms were itching (40.0%), watery eyes (31.0%), burning sensation (24.0%), headache (22.0%), excessive blinking (20.0%), dry eyes (20.0%), foreign body sensation (10.0%), redness (10.0%), eye or periorbital pain (8.0%), blurry vision (5.0%), and photophobia (3.0%). A low minority (9.2%) were aware of the harmful effects of prolonged use of NVDD and the protective measures against it; schools were not involved in educating students about the proper use of these devices. Sixty percent attended periodic eye checkup, 20.0% set time limit, 6.9% properly adjusted screen brightness, and 15.0% practiced outdoor play daily.

CONCLUSION:

Majority of the children (90%) were symptomatic when used NVDD excessively. Children are generally uneducated about healthy practices to prevent these symptoms. Spreading awareness among children and parents is important.
Lateral rectus recession for consecutive exotropia in esotropic Duane syndrome
Authors: Alobaisi Saif , Alabduljabbar Khaled , Alyahya Abdulmalik , Aldaghri Abdulaziz
Published: February 2022

Consecutive exotropia is considered as a rare complication after medial rectus recession that is performed for cases of esotropic Duane syndrome. Here, we present a case of 5-year-old female initially presented with the limitation of abduction, narrowing of the palpebral fissure, and globe retraction of the left eye along with a mild left face turn. She was diagnosed with Duane syndrome Type 1. She was treated with the medial rectus recession (6.5 mm). Postsurgery, she developed a consecutive exotropia. This was managed successfully with the ipsilateral lateral rectus recession (8 mm). Following this surgery, the patient was orthoptic in the primary position and her abnormal head posture was markedly improved.
Fading Kayser–Fleischer ring revisited
Authors: Sethi Maansi , Madan Siddharth , Beri Sarita
Published: February 2022

Kayser-Fleischer (KF) ring, caused by deposition of excess copper in the Descemet membrane, is a characteristic ocular manifestation of Wilson disease (WD). Disappearance of KF rings following successful treatment of Wilson disease is typically a slow process that occurs over years. Herein, we describe a 19-year old girl who presented with neuropsychiatric manifestations and was found to have KF rings on slit lamp examination. Subsequent evaluation (brain imaging, liver function tests, serum ceruloplasmin and urinary copper studies) confirmed a diagnosis of Wilson disease with neurological and hepatic involvement. She was treated with d-penicillamine. She had remarkable fading of KF rings within a span of 6 months of copper-chelating therapy, which was also associated with significant improvement in her neurological symptoms. Though KF rings are a harbinger of neurological Wilson's, their disappearance does not always correlate with systemic improvement – an interesting finding in this case.
A novel variant of autosomal recessive best vitelliform macular dystrophy and management of early-onset complications
Authors: Albuainain Abdulrahman , Alhatlan Hatlan M. , Alkhars Wajeeha
Published: February 2022

To report an adult with autosomal recessive Best vitelliform macular dystrophy with a new homozygous BEST1 mutation, the management of a cystoid macular edema with intravitreal aflibercept in the proband, and the findings in the parents, carriers of heterozygous BEST1 mutations. A 28-year-old female presented with blurry andreduced vision in her both eyes with bilateral vitelliform macular lesions. The patient's parents were also examined. Examinations included electrooculogram (EOGs), imaging studies, and BEST1 gene testing. Interventions included treatment with intravitreal aflibercept for both eyes. The patient presented with visual acuity of 20/20 OD 20/30 OS, RPE changes, multifocal subretinal yellowish deposits resembling vitelliform deposits and subretinal fluids. Cystoid macular edema developed after one month, causing vision reduction (20/28 OD 20/30 OS). Visual acuity recovered to 20/20 OU after serial intravitreal aflibercept injections. The proband showed subnormal EOG Arden ratios. Molecular testing showed the homozygous missense variant c.695T>G p. (IIe232Ser) In exon 6 of the BEST1 mutations and to the best of our knowledge, this variant, which was confirmed by conventional Sanger sequencing, has neither been annotated in databases nor been described in the literature so for (Human Genome Molecular Database 2018.1). In the heterozygous parents, EOGs were subnormal, and minimal autofluorescence changes were seen.

Clinical Relevance:

Prompt recognition and treatment of cystoid macular edema management effectively restore vision. Awareness and recognition of recessive inheritance permit correct diagnosis and counseling.
Design and delivery of a need-based mental health promotion program for shelter-home adolescents
Authors: Soni Janaki , Jijina Parisha
Published: February 2022

Background:

India has a large population of adolescents living in shelter homes. However, there is a scarcity of empirical literature on mental health promotion programs developed to suit their unique needs.

Aim:

The aim of this research was to design a need-based mental health promotion program for runaway and homeless adolescents living in a shelter home in Vadodara, India.

Methods:

To gain a holistic understanding into their mental health issues and felt needs, semi-structured interviews were conducted with these adolescents along with key stakeholders such as their care takers, counselors, and teachers. The key needs identified pertained to issues related to academics, reduction of substance abuse, anger management, and emotional regulation. On the basis of identified needs, a training program of 13 sessions was developed using indigenous technique of Yoga and techniques from literature of subjective well-being and life skills. Total sample included 35 male adolescents from 12 to 18 years of age. Participants were randomly divided into experimental group (n = 19) and control group (n = 16). Pre- and post-intervention assessment was performed using Academic Stress Scale, State Trait Anxiety Scale, Children and Adolescent Mindfulness Measure, and Children Depression Inventory.

Results:

The results indicated that trait anxiety was significantly reduced, and there was a significant increase in mindfulness in the intervention group. However, there was no significant improvement in depression and academic stress.

Discussion:

The observations from this study are detailed to sensitize researchers toward the design and delivery of mental health promotion programs for institutionalized youth.
Identifying entrustable professional activities for postgraduation in psychiatry
Authors: Chauhan Vinay Singh , Chatterjee Kaushik , Prakash Jyoti , Singh Yujal Man , Dangi Ankit , Dubey Amresh , Chail Amit , Sharma Rachit
Published: February 2022

Background:

Competency-based medical education (CBME) has been the mandate by regulatory bodies of medical education in India, and implementation is an evolving process. This study aimed to identify and propose a set of entrustable professional activities (EPAs) for a master's degree in psychiatry. An attempt has been made to present it in the form of a portfolio.

Methodology:

Faculty experts in psychiatry went through phases of review to select appropriate EPAs for postgraduate residents from divergent thinking to development of portfolio.

Results:

One hundred and sixty-seven EPAs were identified and are presented. These were divided according to expertise required. Of these, 54% were considered vital, 30% essential, and 16% desirable.

Conclusion:

It is envisaged that the use of EPAs and portfolios will be instrumental in implementation and success of CBME in psychiatry. It is expected that medical universities will incorporate them in their curricula. It is also expected that data will be generated to identify challenges, which shall guide future refinement of the EPAs.
To Compare the Effectiveness of Traditional Textbook-Based Learning with Video-Based Teaching for Basic Laparoscopic Suturing Skills Training - A Randomized Controlled Trial
Authors: Routh Dronacharya , Rao Pankaj P. , Sharma Aniket , Arunjeet K. K.
Published: February 2022

ABSTRACT

Background:

It is often seen that surgeons face with a situation where he is asked to perform procedure which he has never done independently before. During such times traditionally surgeons refer to standard textbooks before he goes to perform the surgery. However, with increased awareness and use of social media, surgeons are increasingly taking resort of easily available YouTube videos.

Aim:

This study aims to compare the effectiveness of traditional textbook-based learning (TBL) with video-based teaching (VBT) for basic laparoscopic suturing skills training by comparing pre- and post-test cognitive and psychomotor skills.

Materials and Methods:

Randomized control trial.

Results:

A total of 50 residents were divided randomly into TBL and VBT groups. The mean post test scores for both the skills in each group showed a significant improvement compared to the pretest results (P < 0.001). While comparing the post test scores among both the groups it was seen that VBT is as effective as TBL.

Conclusion:

Based on this study we can safely conclude that video-based learning is an effective mode of learning as compared to TBL for teaching laparoscopic suturing skill.
Clinical efficacy of a short course of systemic steroids in nasal polyposis
Authors: Kirtsreesakul V. , Wongsritrang K. , Ruttanaphol S.
Published: February 2022

Background: Although oral steroids are widely used for the treatment of nasal polyposis, a subset of patients shows an unfavorable therapeutic outcome. The aim of this study was to evaluate the efficacy of a short course of oral prednisolone in nasal polyposis and to evaluate which, if any, clinical variables can predict treatment outcome in these patients. Methodology/principal: Using a 3:2 randomization ratio, 63 patients with nasal polyposis received 50 mg of prednisolone and 46 patients received placebo daily for 14 days. Clinical response was evaluated by total nasal symptoms score (TNSS), peak expiratory flow index (PEFI) and total nasal polyps score (TNPS). Potential predictor variables were assessed by clinical history, nasal endoscopy, allergy skin test and sinus radiography. Results: The prednisolone-treated group showed significantly greater improvements in all nasal symptoms, nasal flow and polyp size than the placebo-treated group (p < 0.001, all). In the prednisolone-treated group, patients with grade 3 polyps and positive nasal endoscopy showed significantly less improvement in TNSS, PEFI and TNPS than patients with grades 1-2 size and with negative nasal endoscopy. Conclusions: A short course of oral steroids showed good clinical efficacy in the treatment of nasal polyposis, however, polyps size grade 3 and/or positive nasal endoscopy predispose to a poorer treatment outcome.
Understanding the Role of Kulturagenten (Culture Agents) in the Introduction of Arts Programmes in German Secondary Schools.
Authors:   , Keller Florian
Published: February 2022

Kulturagenten (Culture Agents; hereafter: KAs) support German secondary schools in establishing arts programmes and partnerships with artists or arts institutions. This study uses three qualitative case studies to explore the role of KAs. Role changes are examined and recommendations are provided on how to develop the role in a beneficial way. Reference is made to the German KAs programme, under which the KA role was developed, and the model that inspired it, the English Creative Partner-ships programme. As the main method of data collection, semi-structured in-depth interviews were conducted with KAs. Additionally, insight gained from practical work with KAs was drawn upon. While the KAs programme concept influenced the way interviewees shaped their roles, they each found a balance between managerial intervention, expert consulting and facilitation, according to their preferences and the situation. The proportion of facilitation increased over time. Interviewees regarded partnerships as beneficial for the sustainability of arts programmes and students’ involvement, but challenging due to schools’ and arts partners’ heterogeneity. Interviewees differed in their assessment of the programme's preference for art institutions over individual artists. Arts initiatives can promote schools’ development, but school staff need to have the requisite skills, time and openness for these initiatives to be effective. Programme participants' efforts to establish the KA model beyond the KAs programme were successful in places. One of the programme’s great achievements was establishing the KA as a profession. Increasing students’ participation should be emphasised in the KAs’ remit and training. It was reasonable that the initiators of the KAs programme refrained from defining the quality of art initiatives, but they should nevertheless have provided guidelines that would allow such a definition to be developed. Art initiatives should have the potential to be sustainable, should allow students to explore, and should empower them to shape projects.
Columnas empacadas para la producción de enzimas lignolíticas a partir de residuos agroindustriales
Authors: Zambrano-Macías Pierre Paolo , Vera-Párraga Nixon Eduardo , Rosero-Delgado Ernesto Alonso
Published: February 2022

Comenzando con una breve descripción de la fermentación en estado sólido (FES) se señalan las enzimas producidas por diferentes microorganismos sobre distintos sustratos sólidos. Se detallan las columnas empacadas tradicionales como biorreactor de FES y se revisan las variables de interés como temperatura, aireación, tamaño y forma de las partículas, densidad de empaque, porosidad, actividad de agua y pH. Se puntualizan consideraciones que son cruciales en el rendimiento de un biorreactor de columna empacada como la selección del sistema, relación del tamaño, agitación, calor metabólico, influencia del aire en el calor metabólico. Se incluyen ecuaciones que permiten estudiar la actividad metabólica del microorganismo como la ecuación estequiométrica general, el coeficiente respiratorio y el rendimiento biomasa/sustrato (Yx/s). Se señalan los factores biológicos que permiten evaluar el crecimiento de la biomasa como la tasa de crecimiento específico (μ), la tasa específica de consumo del sustrato (qs) y el tiempo de latencia (λ). Se indica el rol de la modelación matemática en el biorreactor y se plantean las ecuaciones Logística modificada y Gompertz modificada para describir el rendimiento general del biorreactor.

Palabras clave: fermentación en estado sólido, enzimas, columnas empacadas, biomasa.
Reconversión de gases refrigerantes en el Instituto Superior Tecnológico Luis Arboleda Martínez
Authors: Vélez-Moreira Víctor Hugo , Tóala-Arcentales Galvin Antonio
Published: February 2022

Esta investigación se enfocó en diseñar una mezcla de agregados pétreos para posterior ser utilizados en diseño de hormigones de 210 kg/cm2 y 240 kg/cm2. Para esta mezcla se recopilaron materiales de la cantera Uruzca a los que se les realizaron ensayos granulométricos, para realizar la mezcla de agregados se empleó un método de tanteo; se realizaron ensayos complementarios de peso específico, peso unitario compactado y suelto y porcentaje de humedad necesarios para el Método ACI 211.1. Las proporciones de materiales finos que fueron seleccionadas corresponden a un porcentaje de 80/20 (80% cisco y 20% arena de banco) con lo que se mejoró su graduación y el módulo de finura se ajustó al rango de 2.3 a 3.1, las resistencias a la compresión fueron superadas pero la resistividad eléctrica demostró alta penetración de cloruros, dejando marcado una durabilidad deficiente en ambientes de alta contaminación. Las proporciones de materiales que se requieren para diseñar un hormigón de 210 kg/cm2 son de 1 de cemento con 4.36 de agregado grueso y fino, mientras que para una mezcla de 240 kg/cm2 son 1 de cemento y 3.85 de agregado grueso y fino.

Palabras clave: Hormigón, agregados grueso, agregado fino, resistividad eléctrica, resistencia.
Enhancing Social Justice: A Virtual Reality and Artificial Intelligence Model
Authors: Aimiuwu Ehi E.
Published: February 2022

CDC.gov (2020) shows that the coronavirus (COVID-19) has exposed the cost of an unjust law enforcement and judicial system against minorities. Non-Asian minorities, who are usually the poor with health issues, have been the most negatively affected by COVID-19. The aim of this study is to explain through a literature review how virtual reality (VR) and artificial intelligence (AI) can be used to enhance social justice in order to eradicate the biases that deny targeted people access to resources or freedom through the judicial system. Research shows that VR is excellent for capturing multi-dimensional and multisensory videos, sounds, and pictures that can help police and judges to conclude exactly what happened. Also, AI can help to match an incident to past cases or use rules of expert systems to predict judgement for new cases, in order for every person to receive the same judgement and sentencing as a white person involved in a similar incident.