bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation and solubility profile study of sodium and potassium salts of mefenamic acid: the effect of pH and polarity
Authors:   College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, Omer M. E. , Qandil A. M. ,   Commission for Academic Accreditation, Abu Dhabi, United Arab Emirates, Ali A. S. ,   College of Pharmacy, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, Habib H. J. ,   Pharmacy Program, Allied Health Department, College of Health and Sport Sciences, University of Bahrain, Manama, Bahrain
Published: February 2023

Enhancing the solubility of active pharmaceutical ingredients became a fundamental concept in the manufacturing of different pharmaceutical dosage forms. This research aims to enhance the solubility of mefenamic acid by salt formation method and study the effect of polarity, pH, and temperature on the solubility of mefenamic acid and its salts. Two deferent salts of mefenamic acid (sodium and potassium salts) were prepared. Using the asymmetric factorial as an experimental design, the solubility of mefenamic acid (MA), sodium mefenamate (Na-MA), and potassium mefenamate (K-MA) were studied in different solvents, pH, and temperatures. It has been found that potassium mefenamate has the highest solubility among other derivatives in different media. Also, the mefenamic acid and its salts have a higher solubility in the polar aprotic solvent and the higher pH aqueous media.
Altered glucose-dependent secretion of glucagon and ACTH is associated with insulin resistance, assessed by population analysis
Authors: Eriksson Jan W , Emad Reem A , Lundqvist Martin H , Abrahamsson Niclas , Kjellsson Maria C
Published: February 2023

This study aimed to characterize how the dysregulation of counter-regulatory hormones can contribute to insulin resistance and potentially to diabetes. Therefore, we investigated the association between insulin sensitivity and the glucose- and insulin-dependent secretion of glucagon, adrenocorticotropic hormone (ACTH), and cortisol in non-diabetic individuals using a population model analysis. Data, from hyperinsulinemic–hypoglycemic clamps, were pooled for analysis, including 52 individuals with a wide range of insulin resistance (reflected by glucose infusion rate 20–60 min; GIR20–60min). Glucagon secretion was suppressed by glucose and, to a lesser extent, insulin. The GIR20–60min and BMI were identified as predictors of the insulin effect on glucagon. At normoglycemia (5 mmol/L), a 90% suppression of glucagon was achieved at insulin concentrations of 16.3 and 43.4 µU/mL in individuals belonging to the highest and lowest quantiles of insulin sensitivity, respectively. Insulin resistance of glucagon secretion explained the elevated fasting glucagon for individuals with a low GIR20–60min. ACTH secretion was suppressed by glucose and not affected by insulin. The GIR20–60min was superior to other measures as a predictor of glucose-dependent ACTH secretion, with 90% suppression of ACTH secretion by glucose at 3.1 and 3.5 mmol/L for insulin-sensitive and insulin-resistant individuals, respectively. This difference may appear small but shifts the suppression range into normoglycemia for individuals with insulin resistance, thus, leading to earlier and greater ACTH/cortisol response when the glucose falls. Based on modeling of pooled glucose-clamp data, insulin resistance was associated with generally elevated glucagon and a potentiated cortisol-axis response to hypoglycemia, and over time both hormonal pathways may therefore contribute to dysglycemia and possibly type 2 diabetes.
High-dose intravenous hydrocortisone for the treatment of hyperthyroidism: a rare precipitant of thyrotoxicosis periodic paralysis
Authors: Scheive Melanie , Patel Neha , Saeed Zeb
Published: February 2023

Thyrotoxic periodic paralysis (TPP) is a rare complication of hyperthyroidism triggered by precipitants that increase the activity of the sodium-potassium pump in the skeletal muscle. In our case study, a previously healthy 34-year-old male presented to the emergency department with new onset thyrotoxicosis, secondary to Graves’ disease. Given the severity of his triiodothyronine (T3) thyrotoxicosis, he was admitted and started on a high dose of beta-blocker, thioamides, and intravenous hydrocortisone. On the second day of his hospitalization, he developed acute flaccid paralysis of his lower extremities. Subsequent stroke workup was negative, and his electrolytes revealed severe hypokalemia and hyperglycemia consistent with TPP. He was treated with potassium and had a complete recovery of his paralysis and hypokalemia within hours. The patient has not had any recurrence since this singular episode in the hospital. This case highlights the scenario where the treatment of hyperthyroidism with high-dose corticosteroids to reduce the conversion of thyroxine to T3 inadvertently resulted in TPP. Clinicians should be aware of this potentially rare but serious consequence of using steroids to manage hyperthyroidism.

Learning points

High-dose steroids used to treat hyperthyroidism in hospitalized patients may rarely precipitate thyrotoxic periodic paralysis (TPP) by inducing hypokalemia and hyperglycemia.

TPP should be included in the differential diagnosis for acute flaccid paralysis in hospitalized patients with hyperthyroidism.

Since TPP is associated with trans-cellular shifts in potassium instead of total body potassium depletion, conservative repletion of potassium is recommended to avoid rebound hyperkalemia.
Wave disturbances of the atmosphere in a spatially inhomogeneous flow
Authors:   Space Research Institute of the National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Fedorenko A. K. , Kryuchkov Ye. I. ,   Space Research Institute of the National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Cheremnykh O. K. ,   Space Research Institute of the National Academy of Sciences of Ukraine and State Space Agency of Ukraine, Zhuk I. T. ,   Space Research Institute of the National Academy of Sciences of Ukraine and State Space Agency of Ukraine
Published: February 2023

Analysis of measurements by the Dynamics Explorer 2 satellite indicates a close connection between atmospheric wave disturbances and wind circulation in the polar thermosphere. According to satellite observations, large-amplitude acoustic-gravity waves are systematically observed in the regions of formation of powerful wind systems. At the same time, the azimuths of AGW propagation are spatially consistent with the directions of wind circulation. Waves propagate mainly against the wind, and their amplitude is approximately proportional to the wind speed. In order to explain the experimental data, the paper theoretically investigated the changes in the amplitudes of AGW in a horizontally inhomogeneous wind flow. The dispersion equation of the AGW in the reference frame of the medium, which moves with a non-uniform speed, was obtained. When obtaining it, inertial forces were taken into account, as well as the change in the background density of the atmosphere in an inhomogeneous flow. It is shown that under the slow change in wind speed, the real part of this equation coincides with the dispersion equation of AGW for a stationary medium. An expression for the change in the amplitude of waves in a moving medium was obtained, according to which, in an oncoming inhomogeneous wind, the amplitude of the wave increases approximately according to a linear law, which is consistent with the data of satellite observations.
Searching for Own Identity. Life by the Eyes of Internally Displaced Persons (After the Field Materials)
Authors:   M. Rylskyi Institute of Art Studies, Folkloristics and Ethnology, Kalach Olena
Published: February 2023

The submitted article is one of the first attempts in Ethnological science to analyze shortly the events of the 2014 and 2022 in the East of our state after the recorded face-to-face interviews with the eye-witnesses according to the beforehand prepared questionnaire by the authoress personally. Peculiar attention is paid to the consideration of changes in the comprehension of the language and cultural interests, civic values and geopolitical priorities by the population of the region in the system of ethnic and national identification, and also the study of the problems and prospects of development of Ukrainian identity in the region. The respondents’ positions concerning key, in our opinion, issues: causes of the beginning of armed confrontation in the East of Ukraine, the main trends of internal and foreign affairs of our state, world view, language issue, trust to the mass-media, are described. Geography of the research has undergone significant changes with the beginning of Russian-Ukrainian armed confrontation: at first the Crimea is annexed, then the parts of Donetsk and Luhansk regions are captured. Accordingly, the segment almost always supporting the pro-Russian vector of our state development and speaking in favor of granting a special status of the Russian language has dropped. Another part of the mentioned regions has been released after temporary occupation in 2014. It is just the period of the appearance of the first signs of pro-Ukrainian finding of the citizens, when the changes in world-view, perception and selection of information take place. The respondents, interrogated by us, have been living for eight years in the changed social and cultural surroundings, then they have endured the second stress on February 24, 2022. As a result, we see a complete coincidence of views of our informants with the data of the latest sociological surveys on the territory, controlled by Ukrainian government. Ukrainians have changed attitude to the state fundamentally: all regions of Ukraine are united in several days in the desire of victory, confidence in a better future. Victory over the enemy, reconstruction of the country, development of independent free state, unitary in its structure, entering to the EU and NATO, the only Ukrainian state language, ensuring and complying of its functioning on all levels are considered as the undeniable facts. All mentioned above gives an opportunity to state the necessity of a further thorough study of the considered question in combination with the theoretical work of various scientific disciplines.
Ritualism in Ethnic and Popular Culture: Social and Historical Aspects
Authors:   Pavlo Chubynskyi Academy of Arts, Yasiuk Tamara
Published: February 2023

The symbiosis of popular and ethnic culture from the point of view of ritualism is considered in the article. The regularities of spread of various influences of ritualism on modern Ukrainian popular culture are pointed out. The system-functional method is used in the work to analyze the balance of ritualism in modern popular music. The peculiarities of its implementation are followed. The purpose of the article is to consider the symbiosis of popular and ethnic culture from the point of view of ritualism, to analyze the stylization of musical archaism in modern variety art, which is the origin of new forms and their integration in the modern art system. The regularities of spread of various influences of ritualism on modern Ukrainian popular culture are studied. Song samples and creative projects of popular culture are systematized according to folk ritualism. The main trends in the use of the ritualistic factor in modern variety music are described.
Novel Scaffolds for the Treatment of Below-the-Knee Peripheral Arterial Disease With Chronic Limb Threatening Ischemia: A Review
Authors: Zilinyi Robert S , Alsaloum Marissa , Raja Aishwarya , Finn Matthew , Sethi Sanjum S , Parikh Sahil A
Published: February 2023

Below-the-knee (BTK) peripheral arterial disease (PAD) is a significant source of cardiovascular morbidity and mortality. Patients with chronic limb-threatening ischaemia in BTK PAD represent one of the highest-risk cohorts of PAD patients, with little progress having been made regarding long-term patency and mortality over the past four decades. Although conventional balloon angioplasty has long been the standard of care, several novel scaffolds have been introduced over the past decade with promising 1-year patency rates and freedom from clinically driven target limb revascularisation, which may herald a new age of endovascular intervention for BTK PAD. In this review, we present a critical appraisal of the literature surrounding novel scaffolds and drug-eluting technology in the treatment of BTK PAD.
Spatio-temporal analysis of North African forest cover dynamics using time series of vegetation indices – case of the Maamora forest (Morocco)
Authors: Moukrim S. , Benabou A. , Lahssini S. , Aafi A. , Chkhichekh A. , Moudden F. , Ben Bammou M. , El Aboudi A. , Laaribya S.
Published: February 2023

North African forest areas play several roles and functions and represent a heritage of great economic and ecological importance. As a result of global changes, that act independently or synergistically, these areas are currently undergoing a pronounced degradation and their productivity is decreasing due to several factors. This work aims to characterize spatio-temporal dynamics of vegetation within the Maamora forest. This forest is considered as the most extensive cork oak woodland in the world and is divided, from west to east, into five cantons A, B, C, D and E. The data, extracted between 2000–2021 from MODIS NDVI/EVI images of 250 m, were analyzed using statistical parameters with the Pettitt homogeneity and the Mann-Kendall trend tests, with their seasonal and spatial components, in order to better consider the vegetation distribution of this forest. Results show a clear temporal and spatial (inter-canton) variability of vegetation intensity, unrelated to the continental gradient. In fact, recorded mean values in cantons C and E are significantly higher than those of cantons B and D respectively. This is confirmed by both regressive and progressive trends, which were identified respectively from the months of March 2012 and October 2008, in the data series of cantons B and E successively. Spatially, the regressive dynamic remains generalized and affects more than 26.7% of the Maamora’s total area with extreme rates (46.1% and 14.0%) recorded respectively by the two aforementioned cantons. Similarly, all the stand types in canton B show the highest regressive rates, especially the cork oak regeneration strata (75.4%) and the bare lands (86.1%), which may explain the positive tendencies identified by the related series during the fall season. However, the cantons C and E record the lowest rates, respectively, for natural stands of cork oak and artificial plantations. These results highlight also the absence of a causal relationship between the contrasting vegetation dynamics of the Maamora and the climatic conditions, expressed here by the continental gradient. However, they do highlight the effects of other factors, particularly those of a technical nature.
Ecological and faunal characteristics of helminths of wetland birds in North-Western Uzbekistan
Authors: Arepbaev I. , Akramova F. , Shakarbaev U. , Yorkulov Z. , Mirzayeva A. , Saidova S. , Esonboyev J. , Safarova F. , Saparov K. , Jumanov M. , Azimov D.
Published: February 2023

The article studies some faunistic features of helminths of wetland birds in the ecological crisis zone in North-Western Uzbekistan. Parasites of wetland birds collected in the basin of the lower reaches of the Amu Darya during the hunting seasons of 2018–2022 were used as material for this work. 500 individuals of birds representing 39 species from 24 genera, 13 families and 9 orders were examined using the parasitological dissection method. The article discusses the distribution and ecology of the helminths in the studied groups of birds. A total of 112 helminth species were identified in the region – 28 species belong to the class Cestoda, the class Trematoda is represented by 57 species, Nematoda – 23 and Acanthocephala – 4 species. 92 species of heminths were identified in the study area for the first time. The work provides original data on the structure of the helminth fauna from 9 orders of wetland birds. Various paths of helminth transmission in the circulation of infection were specified. The researchers identified four ways parasites use to enter their definitive host: helminths penetrate the host’s body when the latter eats other organisms, intermediate or reservoir hosts of helminths, which are part of the definitive’s host’s diet; helminths enter the host as mechanical impurity to food or water; they make active efforts to penetrate their host; helminths are transmitted by the intermediate host when the latter forages on the definitive host. Most of intermediate hosts for representatives of the class Cestoda were crustaceans – inhabitants of different types of water bodies; Oligochaeta are also included here as second or reservoir hosts. The development of trematodes occurs with the participation of aquatic molluscs acting as the first intermediate host. Various species of insects, fish, amphibians, reptiles and small mammals were identified as the second hosts. Nematoda use a wider range of intermediate hosts (Oligochaeta, crustaceans, insects – aquatic and terrestrial). Fish and amphibians were registered as the second and reservoir hosts of nematodes. The food chains of individual orders of wetland birds largely determine the composition of helminths parasitising them and are the main factor in the formation of their helminth fauna. These processes undoubtedly occur in time and space under the strict control of environmental factors.
Biofouling growth on plastic substrates: Experimental studies in the Black Sea
Authors: Snigirova A. O. , Uzun O. Y. , Bondarenko O. S. , Kapshyna I. A. , Synegub I. A. , Portianko V. V. , Kudrenko S. A. , Rybalko O. A. , Vorobyova L. V. , Vynogradov O. K.
Published: February 2023

Despite long-term research on marine litter there is still insufficient knowledge about benthic organisms associated with these substrates, especially experimental studies and methodology of sampling for complex biofouling assemblages. To predict the fate of plastic in the marine environment it is necessary to know how long the macrolitter can stay in different sea matrices and what are the steps of colonisation by marine organisms. The experiments were carried out during various seasons in situ in the north-western Black Sea coastal area. Three new types of the experimental constructions intended for different durations of exposure (1–10 months) were designed. This article is the first to present the methodology and the results of complex experiments investigating marine fouling (from microalgae to meio- and macrofauna) on plastic surfaces. Overall, 28 genera of microalgae, 13 major groups of meiobenthos and 36 species of macrofauna were found on plastic during the experiments. The microalgae fouling was mainly formed by representatives of genus Cocconeis. The species composition of microalgae was common for the research area. The average density and biomass of meiobenthos were the greatest on I construction type after 8 months of exposure. In the total macrozoobenthos biomass and density of Bivalvia and Crustacea dominated, respectively. The obtained results on the interaction between fouling organisms and plastic materials in the marine environment form an important contribution to the understanding of the "good ecological status" of the sea. Additional studies based on the tested methodology could be used as a component of ecological monitoring during development and implementation of the approaches of the Marine Strategy (descriptor 10).
Extractivismo, estallido social y procesos territoriales: efectos de la minería carbonífera en Cesar y La Guajira, Colombia
Authors: Garcia Solano Ernesto Carlos
Published: February 2023

El levantamiento social en Colombia a partir de 2019 y los efectos locales y globales de la pandemia del COVID-19 han exacerbado tensiones, develando contradicciones y disputas territoriales inusitadas. En este artículo se presentan procesos socioespaciales derivados de las transformaciones inducidas por el extractivismo minero-energético en los departamentos de Cesar y La Guajira, enfatizando el papel de la movilización social. El objetivo es exponer dinámicas que reflejen la territorialización de las relaciones de producción, incluyendo la urbanización en el ámbito de aferencia del complejo carbonífero. La intención que direccionó la indagación fue la de captar pautas que permitan interpretar condiciones emergentes en los entornos regionales impactados por el extractivismo. Para ello se trabajó con indicadores oficiales, se realizó un seguimiento de prensa y el análisis cartográfico de imágenes satelitales. Se pudo concluir que hay una articulación diversa de actores sociales que surgen de las dinámicas territoriales existentes e impugnan las bases del modelo extractivista. Con esa perspectiva, se reflexiona sobre el rol de la planificación del territorio ante la urgencia de nuevas alternativas que impliquen la superación de la crisis socioambiental actual derivada de la minería transnacional.
Balance de 45-años de un posgrado en planificación
Authors: Yunda Juan G.
Published: February 2023

Desde hace décadas, en los países desarrollados, la planificación urbana y regional constituye un campo definido del conocimiento y una disciplina reconocida profesionalmente. En Colombia, sin embargo, epistemológicamente este campo aún está lleno de incertidumbres y entrecruzamientos con disciplinas como el diseño urbano y el campo ambiental. Este trabajo sintetiza 45 años de un programa de posgrado en Planeación Urbana y Regional en Bogotá, mostrando sus procesos de autoevaluación, cambios de plan de estudios y procesos curriculares ante las autoridades educativas del país. Esta historia muestra cómo, ante la ausencia de un gremio de planificadores y un consejo de acreditación disciplinar en el país, el programa ha estado cambiando de enfoque e intentando de diferentes maneras cumplir con los requerimientos de producción académica exigidos por estándares nacionales generalistas y poco flexibles con las particularidades de cada campo. Más retador aún ha sido que, ante la ausencia de contenidos mínimos exigidos por el gremio, en los últimos 20 años ha existido localmente un proceso de creación de varios nuevos programas con diferentes enfoques y contenidos que ponen en la incertidumbre a los profesionales interesados en el campo, y comprometen la sostenibilidad de los programas existentes.
El workshop como estrategia de aprendizaje en planificación territorial
Authors: Sauza Reyes Adriana Catalina , Sevilla Torres Diana Carolina
Published: February 2023

La enseñanza de la planificación territorial es un tema en proceso de consolidación y es de relevancia para el desarrollo de capacidades de formación para la transformación de las ciudades latinoamericanas. En este sentido, se presentan las experiencias en torno a la aplicación del workshop como estrategia de aprendizaje que, al ser incorporada dentro del plan curricular del programa de posgrado, ha servido para reforzar los procesos de formación en investigación, así como para profundizar y poner en práctica las competencias adquiridas en otros componentes teóricos. A continuación, se expone la forma como se ha llevado a cabo esta experiencia, los aspectos fundamentales para su desarrollo y una serie de resultados que muestran los beneficios de implementar este taller práctico para que los estudiantes comprendan las dinámicas y problemas territoriales y busquen soluciones contextualizadas de planificación de un territorio específico, a partir de una visión sistémica e interdisciplinaria.
Pertinencia formativa de competencias en la currícula del urbanismo.
Authors: Rosales Perez Natalie , Gutierrez Chaparro Juan Jose
Published: February 2023

El artículo evalúa la pertinencia formativa de los futuros profesionales de la ciudad, a la luz de las competencias que definen al urbanista del siglo XXI. Usando como método el caso de estudio, se analiza el núcleo sustantivo del Plan de Estudios 2015 de la Licenciatura en Planeación Territorial de la Facultad de Planeación Urbana y Regional de Universidad Autónoma del Estado de México  para contrastar sus propósitos en el ámbito de las competencias y los ámbitos de desempeño profesional.

El análisis revela múltiples retos para la enseñanza en la actualidad y proponer acciones de reforma para fundamentar una visión de los futuros planes de estudios y enfoques educativos que permita el desarrollo de las competencias, habilidades y conocimientos para que los futuros urbanistas estén equipados para teorizar, analizar y gestionar un objeto de estudio que al igual que la sociedad, evoluciona y se transforma de una forma vertiginosa.
COVID Communications: Preferred Brand Tones for Consumers during Stressful Times
Authors: MacSween Sara , Canziani Bonnie
Published: February 2023

This study investigates consumer preferences for brand tone when they are under a stressful situation (i.e., lockdown during the covid-19 pandemic). Five mutually exclusive brand tone choices were presented to consumer respondents (informative, comforting, trustworthy, inspiring, and humorous). Consumer preferences for these were inspected and analyzed against demographics and self-reported items related to pandemic-induced stress and coping behaviors. The statistical relationships between stress and individual brand tone preferences varied from negligible to negative. No positive associations were noted. Gender and marital status showed significant associations with brand tone selections. Marketing managers should be aware that consumers continue to prioritize informative messages during uncertain times. However, the use of comfort is also helpful during turbulent times and may be particularly appropriate for female consumers seeking social connections. Regarding study limitations, this research focused on u.s. residents during a single pandemic crisis. Respondent stress was self-reported.
Evaluación de los efectos de la confianza del consumidor sobre el boca-oído electrónico (e-WoM) en tiendas de comercio electrónico en Colombia
Authors: Hernández Díaz Linda Rocío
Published: February 2023

Las restricciones impuestas para contener la pandemia por covid-19 durante el 2020 ocasionaron un gran crecimiento del e-commerce, que no fue uniforme en todas las categorías de productos. Las categorías con comportamientos menos favorables requieren de herramientas para estimular las ventas por el canal digital y los productos más favorecidos necesitan fidelizar a sus clientes. La generación de boca-oído electrónico o e-WoM es una de estas herramientas de las estrategias de marketing que incentivan el e-commerce, por lo que es importante analizar las variables que lo afectan. Una de ellas es la confianza del consumidor en las tiendas en línea, que en el contexto internacional se ha demostrado que promueve el e-WoM. Se realizó un estudio transversal con base en un modelo de ecuaciones estructurales planteado a partir de las escalas de confianza y e-WoM encontradas en la literatura, y comprobado mediante la técnica de regresión de mínimos cuadrados parciales en el software SmartPLS3. Para ello, se encuestó a clientes de tiendas de e-commerce b2c de Bogotá, Medellín y Cali. Los resultados demuestran que los expertos en mercadeo en Colombia deben buscar mecanismos para fortalecer la confianza en las tiendas en línea, porque con ello se contribuye a la difusión de boca-oído electrónico.
Estimation of pH on total scale in coastal environments for the understanding of the variability of the carbonate system in the context of ocean acidification
Authors: López Erika Paola , Bernal Cesar A. , Zea Sven
Published: February 2023

Most of the theoretical and practical development of the ocean acidification (OA) phenomenon involves the open ocean, and not much is known of the significance of variation in pH and carbonate system in coastal environments and the effect, if any, of OA. Traditional potentiometric pH measurements are carried out on the NBS scale (pHNBS), developed for freshwaters, but for OA it is necessary to use the total scale (pHT), which includes the additional ions of seawater. Using a series of in-situ measurements of potential, carried out with a pHNBS electrode in the artificial coastal lagoon La Escollera in Santa Marta (Colombia), a methodology to calculate pHT was tested. For this, the equation pHT(X) = pHT(TRIS) - EX-ETRISR*T*ln10/F was used, which calculates pHT(X) of the sample from the pHT(TRIS) of the TRIS standard solution, the potentials E measured at temperature T, and the constants R and F. ETRIS was determined experimentally for the lagoon temperature range, and the linear regression showed a coefficient of determination (R2) of 0.9977. In a first qualitative analysis, it was verified that pH variations during the day-night cycle are closely associated with those of oxygen, from the production and consumption of CO2 by photosynthesis and respiration. These high-frequency variations are of greater magnitude than those of the open ocean, raising questions about the real effect of OA on coastal ecosystems.
Emociones y prácticas de justicia: reflexiones para el abordaje de la(s) violencia(s) escolar(es)
Authors: Rea Eliana , Saldarriaga Vélez Jaime Alberto
Published: February 2023

Este artículo, derivado del proyecto de investigación doctoral Alcances y limitaciones de la justicia restaurativa en el abordaje de la(s) violencia(s) escolar(es) en Colombia, hace un recorrido analítico sobre la relación compleja entre emociones y prácticas de justicia en la escuela, a propósito del abordaje de las violencias escolares. Recorre, en términos generales, tanto las perspectivas epistemológicas como algunos enfoques teóricos que han abordado el lugar de las emociones en las prácticas de justicia escolar. Descubre la necesidad de trascender las miradas funcionales hacia análisis complejos de la(s) violencia(s) escolar(es) y de las emociones en la justicia escolar.
Más allá de la cultura y la biología, hacia una sociología relacional de estudio de las emociones
Authors: Martell Hernández Eduardo Osiel , Caro Luján Nelly Rosa
Published: February 2023

Se revisan los antecedentes de las discusiones epistemológicas contenidas en la primera propuesta de la sociología de las emociones, y los aportes de la historia de las sensibilidades; se reconocen los límites de la tradición cultural del conocimiento de lo sensible, en la que están inmersas, y se presenta una propuesta que sustenta su estudio desde la sociología incluyendo la tradición explicativa. Se relacionan las categorías de “experiencia” y “expresión” para la primera, así como de “percepción” para la segunda, enmarcadas en un contexto de investigación.
La crisis sobre otra crisis: maternidades, cuerpos/ emociones y pandemia en la región de Atacama, Chile
Authors: Rodríguez Venegas Viviana , Duarte Hidalgo Cory
Published: February 2023

Este es un estudio cualitativo de corte biográfico-narrativo que indaga en las cotidianidades de mujeres/madres de la región de Atacama, Chile, durante la pandemia de covid-19. Los resultados muestran que las medidas para controlar la pandemia invisibilizan el impacto diferenciado sobre los cuerpos/emociones de las mujeres, la sobrecarga y el estrés, entremezclados con su propia subjetividad. El estudio concluye en la necesidad de considerar las maternidades como prácticas del querer, el apremio de situar los cuidados como elemento central en la preservación de la vida y lo urgente de levantar políticas de carácter interseccional para mitigar los efectos adversos de las crisis.
Migration & Arbeit
Authors: Biffl Gudrun
Published: February 2023

Österreich ist seit den 1960er Jahren ein Zielland für Arbeitsmigration. Dieses Buch gewährt einen Einblick in aktuelle wissenschaftliche Debatten und empirische Forschungserkenntnisse zu Migration und Arbeit in Österreich im internationalen Vergleich. Es verdeutlicht, warum der österreichische Arbeitsmarkt Migration braucht, woher Migrant*innen kommen, wo sie überwiegend Arbeit finden und welche Rolle die Sozialpartnerschaft und das Wohlfahrtsmodell bei der Integration ins Erwerbsleben spielen. Thematisiert werden zudem gesundheitliche Arbeitsbelastungen und Diskriminierung am Arbeitsmarkt. Die grenzüberschreitende Entsendung von Arbeitskräften und die selbständige Erwerbstätigkeit in der privaten 24-Stunden Pflege zeigen die zunehmende Diversifizierung der rechtlichen Organisation der Arbeit von Migrant*innen. Auswirkungen der Personenfreizügigkeit in der EU auf Empfänger- und Sendeländer werden mit Fokus auf mittel- und osteuropäische Länder analysiert. Nicht zuletzt beleuchtet dieses Buch die rechtlichen Rahmenbedingungen und die Gestaltungsmöglichkeiten der Politik und entwirft Szenarien für mögliche zukünftige Entwicklungen der Arbeitsmigration.
Validation of the rapid and simple LC-MS/MS method for the quantification of pregabalin in plasma of acutely poisoned patients
Authors: Antunovic Marko , Dzudovic Jelena , Kilibarda Vesna , Vucinic Slavica , Djordjevic Snezana
Published: February 2023

Pregabalin is a gabapentinoid approved for the treatment of general anxiety disorder, neuropathic pain and as adjunctive therapy for focal seizures in patients with epilepsy. In addition, there are a number of conditions for which pregabalin is prescribed off-label. Along with the widespread use there are a significant number of reports describing the misuse of pregabalin over the last decade. Over time, it became clear that pregabalin should become part of routine testing in toxicology laboratories. The aim of this paper was to present validation of a LC-MS/MS method for the quantification of pregabalin in plasma of acutely poisoned patients. Simple sample preparation step and rapid chromatographic separation shortened the overall analysis time, which was the goal of method development. The presence of pregabalin was confirmed with three ion transitions, ensuring high selectivity of the validated method. The statistical data obtained showed good precision and accuracy over a wide concentration range. No endogenous or other interference was detected, and there was no matrix effect influence with this method. The LC-MS/MS method was applied to quantify pregabalin in plasma samples of patients admitted to the emergency department due to a possible acute pregabalin overdose. Different concentrations were found, and we report, to the best of our knowledge, the highest plasma concentration of pregabalin in the plasma of a patient with acute poisoning. In conclusion, we developed a fast and simple LC-MS/MS method for reliable determination of pregabalin and demonstrated the developed method was suitable for routine use in clinical toxicology setting.
MATHEMATICAL SIMULATION OF CONTACT INTERACTION OF A PANDA TYPE OPTICAL FIBER WITH ALUMINUM HALF-SPACE WITH DIFFERENT CHARACTER OF ELEMENTS conjugation
Authors: Lesnikova Yu. I , Kamenskikh A. A , Pashchenko M. M
Published: February 2023

Mathematical modeling of the deformation behavior of a Panda-type optical fiber with protective and hardening coatings was performed as part of the work. The contact indentation of a fiber into in aluminum half-space is simulated. The different pattern of the elements conjugations of the contact unite is considered: co-strain, contact gluing, frictional contact and their combination. The problem implementation is aimed at analyzing the pattern influence of the system elements conjugation on the deformation and contact parameters of the Panda-type fiber with two-layer protective-strengthening polymer coating when interacting with a metal surface. Residual stresses in the optical fiber after the manufacturing process and polarization are not taken into account in the model. It was found that the deformation behavior pattern of an optical fiber is refined when contact gluing between structural elements is taken into account. The maximum stress intensity values are observed in quartz when frictional contact between the elements of the system is taken into account. The polymer coating peels off on part of the mating surface and ceases to fully perform protective functions.
FORMALISING A RAIL PLANNING TASK FOR A MINING COMPANY
Authors: Eletin E. V , Borovkova G. S , Galkin A. V
Published: February 2023

The formalisation of the task of railway planning, namely, the formation of freight trains and their routes along the railway network of the mining company is considered. The statement of the problem including parameters of the problem, variables, system of constraints and target function is presented. An integer formulation of the problem, taking into account the constraints of a particular mining company, is proposed. The problem of railroad planning is relevant despite the various approaches and solutions available, since each case encounters different constraints. This formalisation differs from the others because there are different types of locomotives, and hence different capacities, and there are different types of materials to be transported. Four different categories of restrictions are presented. In addition, the existence of an extensive network of stations, a huge number of non-stationary constraints and other factors significantly increase the dimensionality of such problems, which increases the interest of researchers to them and contributes to the emergence of new and the development of existing methods and approaches to their solution. In the introduction, a description and features of the considered railway network of a mining company are presented. It then presents the formulation of the problem to be formalised, including parameters, variables, constraint system and target function. Then a numerical example with a solution is given. The integer linear programming method is used as a method for solving this problem. An example of scheduling freight trains for a network including four stations connected by double-track runs and having a star form is considered. The task of constructing routes is not considered in this example, as it is a separate complex task and is not required for this example, as there is a direct path from each departure station to each destination station.
ANALYSIS OF FACTORS INFLUENCING THE PRICING OF AIR TICKETS
Authors: Cheremnykh A. A
Published: February 2023

The article is devoted to discussing topical issues about the formation of the price of plane tickets. The paper analyzes and evaluates the degree of influence of factors on the pricing process using regression analysis methods. At the first stage, a review of the available research sources of foreign and Russian authors was carried out, according to the results of which the main characteristics determining the price level of air tickets were identified and considered. In the course of studying the issue, the experience and conclusions, based on previously performed studies of foreign segments of air transportation, are extended to the selection and analysis of current data on the Russian market. The assessment of the degree of a possible influence of the considered price-forming indicators on air ticket fares was carried out using four econometric models of the dependence of ticket prices on exchange rates, fare/air route characteristics, socio-economic and secondary factors. They are checked for lowcost and economy segments based on information on 15 thousand of air tickets of Russian air carriers for the period from 19.01.2021 to 12.02.2021, presented in the form of a single data set. The data was collected independently by daily monitoring of information from the official websites of airlines, federal websites of Rosstat, and Rosaviation. As a result of the research conducted within the framework of this article, it was revealed that with an increase in the distance of the flight, the cost of the ticket increases proportionally. The average income of the population negatively affects prices in the economy and budget classes. A similar trend can be traced concerning the cost of jet fuel at the airport of departure and nonstop flights. Reducing the number of days between the dates of ticket purchase and flight departure will also affect the increase in ticket prices. With a decrease in the exchange rate of foreign currency, the cost of economy class air tickets changes significantly compared to the budget. The reverse trend is observed in the case of the IATA exchange rate, where the effect falls on the last group of shipments. The listed characteristics are identified as the most significant relative to the considered classes of tariff groups in the Russian aviation industry. The results of the work can be recommended to air carriers for use in the process of forming the cost of tickets to achieve maximum efficiency and profitability of the business, used by consumers of the airline services as a tool for finding and buying air tickets with the best conditions and offers.
ASSESSMENT OF THE STATE OF SECURITY OF OBJECTS ON COMMUNICATIONS PROTECTED BY ROSGVARDIYA
Authors: Starenkov I. A , Melnikov A. V , Akhlyustin S. B
Published: February 2023

At the moment, there is an increase in the volume of tasks for the units of the Russian Guard for the protection of objects of varying degrees of importance, in particular objects on communications. Assessment of the effectiveness of the state of security of these facilities makes it possible to implement the right strategy for the distribution of forces and means, which will ensure the safety of the facility. The paper proposes a model for calculating the indicator of assessing the state of security of an object in communications based on expert survey data, which will assess the effectiveness of building a system of protection of a protected object. The developed model is supposed to be improved and based on it to create a methodology for evaluating the effectiveness of the use of units in the protection of objects in communications.
Cosmo Francesco Ruppi, Arcivescovo Metropolita di Lecce (6 VI 1932–29 V 2011)
Authors: Jacov Marko , Carlino Mauro
Published: February 2023

The sixth anniversary of death of archbishop Cosmo Francesco Ruppi was celebrared in 2017. On this occasion it is good to remind this outstanding Italian clergyman, the clerk in the secretariat of the Episcopate of Italy, the bishop of the diocese of Termoli and the diocese of Larino (which were connected in 1986), the metropolitan of the archbishop of Lecce. The clergyman who by contemporary people is remembered as a progressive man, a lover of culture and art, a friend of artists, an excellent educator and lecturer. The archbishop was generally respected and he was unusually esteemed by Pope John Paul II. The archbishop was an author of many important theological works.
RELATIONSHIPS AMONG SENSE OF COMMUNITY, SCIENCE SELF-EFFICACY, AND SCIENCE IDENTITY FOR FEMALE MEYERHOFF SCHOLARS: IMPLICATIONS FOR PATHWAYS TO BROADENING THE WORKFORCE IN STEM
Authors: Watkins-Lewis Karen , Domingo Mariano R. Sto , Singh Rupsha , Telfer Nicole A. , Harrington Eileen G. , Moraga Rukiya Wideman , Maton Kenneth I.
Published: February 2023

Women remain underrepresented in Science, Technology, Engineering, and Mathematics (STEM) fields, even with the plethora of programs to increase diversity. Understanding the undergraduate experience for female students of color majoring in STEM is critical for determining effective strategies for retention and smooth career pathways. Using data from 96 (predominantly) African-American female and Latina students in the Meyerhoff Scholars Program at the University of Maryland, Baltimore County, this study quantitatively examined the relationships among sense of community, science self-efficacy, and science identity. Mediation models were run on all female STEM majors in the dataset. There was a positive and significant indirect effect of sense of program community on science identity via science self-efficacy. The results of this study enhance our understanding of how female Meyerhoff students with a strong sense of program community thrive in STEM. It adds support to previous studies of the positive impact that student-focused programs that address multiple areas of students of color needs and challenges have on psychosocial variables important to student success. This study provides further insight into the critical work of retaining female undergraduate students of color in STEM programs and ensuring their success along the pathway to a STEM career.
EXPERIMENTAL INVESTIGATION OF THE TRANSITION BETWEEN INTERMITTENT AND ANNULAR TWO-PHASE FLOW THROUGH ORIFICE PLATES
Authors: van der Geest Charlie , Ojeda L. F. C. , de Castro Marcelo Souza
Published: February 2023

In several industries, specifically in the petroleum industry, single and multiphase flows through restrictions are commonly found. The restrictions are installed for multiple purposes, e.g., to control the flow and measurement. This research focuses on an experimental study of two-phase (air-water, air-oil) flows through orifice plates, with different restriction sizes (β) to better understand the effects of viscosity in three flow patterns: elongated bubble, slug flow, and annular flow. The experimental setup allows us to visualize the flow with a high-speed camera and measure the differential pressure signature, allowing a detailed discussion on the influence of Reynolds, Froude, and aspect ratio (β) for each flow pattern. This research demonstrates that with simple data analysis (PDF, PSD) of a low-frequency pressure drop sensor installed in the of singularity, it is possible to determine not only the flow pattern upstream the restriction, which has been done before in the literature, but also to determine several properties of the flow upstream and downstream, such as the intermittent factor of the flow and the oscillation wave downstream of the restriction, among others. This paper shows that any restriction properly instrumented can be used to determine the flow pattern in a system, which is usually an unknown variable. The analysis shows how the transition of flow patterns can be observed based on both probability density functions and the power spectrum density of the differential pressure signature.
Az Európai Unió LNG-importjának jelene, és jövőbeli kilátásai
Authors: Török Virág
Published: February 2023

Az Európai Unió energiapolitikájában gyökeres változások történnek a 2019 decemberében nyilvánosságra hozott Európai Zöld Megállapodás javaslatcsomag ambiciózus célkitűzéseinek megvalósításával összefüggésben. Az EU földgázigénye az átmeneti időszakban várhatóan megnövekszik, különösen azokban a régiókban, amelyek ráutaltak a kiemelkedően környezetterhelő kőszén használatára. A tanulmány bemutatja a cseppfolyósított földgáz Unión kívüli exportőreit, és az uniós felhasználás megoszlását. Az EU közös érdekű projektjeit összesítő 2019-es listájára négy darab új LNG-terminál (ír, horvát,görög, lengyel) projektje került fel. Az Európai Bizottság 2021-ben megjelentette az ötödik PCI- (Projects of Common Interest – közös érdekű projektek) listáját, amelyegyszersmind alkalmat nyújtott az előző lista vonatkozó projektjeinek áttekintésére.Témánk szempontjából nem mehetünk el szó nélkül a 2021-es évet alapvetően meghatározóa Covid19-világjárvány hatásai mellett, amellyel összefüggésben írásomban ismertetemaz elmúlt időszakban megjelent, a járvány földgázpiacra (cseppfolyósítottföldgáz1 importra) gyakorolt hatásainak szakmai előrejelzéseit is.