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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Khamis, Melanie; Prinz, Daniel; Newhouse, David; Palacios-Lopez, Amparo; +2 Authors

    The economic crisis caused by the COVID-19 pandemic sharply reduced mobility and economic activity, disrupting the lives of people around the globe. This brief presents estimates on the crisis’ impact on labor markets in 39 countries based on high-frequency phone survey (HFPS) data collected between April and July 2020. Workers in these countries experienced severe labor market disruptions following the COVID-19 outbreak. 34 percent of respondents reported stopping work, 20 percent of wage workers reported lack of payment for work performed, 9 percent reported job changes due to the pandemic, and 62 percent reported income loss in their household. Measures of work stoppage and income loss in the HFPS are generally consistent with GDP growth projections in Latin America and the Caribbean but not in Sub-Saharan Africa, indicating that the phone survey data contributes valuable new information about the impacts of the crisis. Ensuring availability of such critical data in the future will require investments into statistical and physical infrastructure as well as human capital to set up Emergency Observatories, which can rapidly deploy phone surveys to inform decision makers.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Open Knowledge Repos...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Open Knowledge Repos...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Domínguez Castillo, José Gabriel; Cisneros Cohernour, Edith Juliana; Ortega Maldonado, Alvaro; Ortega Carrillo, José Antonio;

    This article arises as a result of the great uncertainty that currently exists in the educational context as a consequence of the implementation of an emergency model of distance education in times of COVID-19 throughout the world. The work provides the perspective of 2063 students from diverse contexts in the Mexican Southeast, who answered an instrument that evaluates four domains of the distance learning process: assignments and strategies, course design, communication and interaction, content and attitude. There were notable differences in the perceptions of urban and rural students in all the domains evaluated. Communication and interaction obtained the highest scores for students in rural and urban contexts, in contrast, the lowest scores recorded for both contexts were: Design of assignments and strategies for urban contexts and the Attitude domain for rural contexts. One of the conclusions of this study shows the disadvantages of students belonging to rural communities and the possible increase in inequality gaps in access to knowledge during confinement. Este artículo surge como resultado de la gran incertidumbre que existe actualmente en el contexto educativo como consecuencia de la implementación de un modelo de emergencia de educación a distancia en tiempos de COVID-19 en todo el mundo. El trabajo aporta la perspectiva de 2063 estudiantes de diversos contextos del sureste mexicano, que contestaron un instrumento que evaluó cuatro dominios del proceso de enseñanza a distancia: Tareas y estrategias, Diseño del curso, Comunicación e Interacción, Contenido y Actitud. Existieron notables diferencias en cuanto a las percepciones de los estudiantes urbanos y rurales en todos los dominios evaluados. La Comunicación e interacción obtuvo el puntaje más alto en los estudiantes de contextos rurales y urbanos, en contraste los más bajos registrados para los dos contextos fueron: Diseño de tareas y estrategias para los contextos urbanos y el dominio Actitud para los contextos rurales. Una de las conclusiones de este estudio evidencia las desventajas en las que se encuentran los estudiantes pertenecientes a las comunidades rurales y el posible aumento en las brechas de desigualdad de acceso al conocimiento durante el confinamiento.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Re-Unirarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Re-Unir
    2022
    Data sources: Re-Unir
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Re-Unirarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      Re-Unir
      2022
      Data sources: Re-Unir
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Gabinete de Prensa ISCIII;

    Noticia publicada en la Web del ISCIII 21/10/2021 Nota de prensa sobre Los datos de la 8ª ronda de la encuesta COSMO-Spain de percepción social de la pandemia confirman el aumento en la confianza en las vacunas, con un nuevo máximo; el 89% de las personas encuestadas se pondría una dosis adicional si las autoridades lo recomendasen. Desciende la preocupación por el SARS-Cov-2 y la COVID-19, crece el optimismo sobre las perspectivas de la pandemia, se reduce la búsqueda de información y la comunidad científica sigue siendo el colectivo que más confianza genera. No

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Recolector de Cienci...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Recolector de Cienci...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Polívka, Vojtěch;

    Pandemie COVID-19 bez pochyby narušila životy všech a způsobila globální krizi, která do této doby neměla obdoby. V důsledku pandemie se objevily dva nebezpečné fenomény, které řešení krize neusnadnily. Prvním fenoménem je fenomén odpůrců očkování také známých jako anti-vax. Druhým fenoménem jsou dezinformace a taktéž fake news. Dezinformace v období této krize přinesly názorové proudy, které u občanů vyvolávaly nechuť dodržovat opatření a odmítat nebezpečí šíření tohoto viru. Zároveň v případě řešení tohoto onemocnění pomocí vakcinace byla podrývána důvěra v její bezpečnost či účinnost. Pomocí rámcové analýzy dezinformačních webů bylo identifikováno devět rámců, které napomáhají k odmítání či odkládání vakcinace. Tyto rámce byly hledány ve veřejné diskusi pod články z mainstream zpravodajských webů s cílem zjištění, jak se tyto rámce do veřejné diskuse přenáší. Obhájeno The Pandemic of COVID-19 with no doubts changed the life of everyone and caused global crisis that had no analogues till this day. As a result of the pandemic, two dangerous phenomena have emerged that have not made it easier to resolve the crisis. The first phenomenon is the phenomenon of vaccine opponents also known as anti-vax. The second phenomenon is desinformation also known as fake news. Desinformation in the period time of this crisis brought opinions that made citizens disrespect measures against the spread of virus. At the same time was undermined the confidence, efficacy and safety of vaccine against this virus.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Digital Library Univ...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Digital Library Univ...arrow_drop_down
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Sánchez González, Ángela; Bravo Gómez, Corina;

    Las enfermedades neurodegenerativas son dolencias que afectan principalmente a las neuronas del cerebro. La más común es la enfermedad de Alzheimer, seguida de la enfermedad de Parkinson, la demencia senil y los accidentes cerebrovasculares. El objetivo principal del trabajo es comprobar si la COVID afecta de alguna forma a estas enfermedades. El presente trabajo ha contado con la colaboración del Dr. Alberto Rábano, patólogo dela fundación Cien y director de tejidos. Según sus observaciones, la COVID está afectando al Sistema Nervioso Central (SNC), con manifestaciones como encefalitis que derivan en ictus; los cuales, a su vez, están asociados a graves secuelas funcionales. Tanto las observaciones del Dr. Rábano como los resultados de la encuesta realizada para este proyecto, revelan que las enfermedades neurodegenerativas no están empeorando por la COVID. Pero esta infección se asocia a mayor riesgo de ictus lo que traerá consecuencias a futuro, aunque aún es pronto para asentar estas observaciones. Según las declaraciones del Dr. Rábano, el factor de riesgo para la enfermedad del Alzheimer es el gen APOE 4, y que a su vez es un factor de riesgo para la COVID; las personas que tienen esta forma del gen, han tenido los síntomas más graves. Según estudios realizados a un grupo de personas, aquellos que tenían esta variante genética dieron positivo en COVID-19 lo que sugiere que el riesgo se duplica. Además, la COVID está causando una serie de daños que van a propiciar la aparición del Alzheimer; a su vez el aislamiento y el confinamiento ha afectado negativamente a las personas que presentan estas enfermedades. Técnico Superior en Anatomía Patológica y Citodiagnóstico Universidad Europea de Madrid Presencial

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ TITULAarrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ TITULAarrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Periokaitė, Paulina; Dobrovolskienė, Nomeda;

    Pasaulyje besikeičianti situacija dėl COVID-19 protrūkių sukelia krizinę padėtį ne tik sveikatos apsaugos atžvilgiu, bet ir ekonominiu. Įmonės susiduria su skubotais sprendimais siekdamos išvengti finansinių problemų ar net bankroto. Tiek teorijoje, tiek praktikoje dažnai aptinkamas labiau neigiamas nei teigiamas koronaviruso protrūkio poveikis transporto sektoriaus verslui, tačiau ši tema dar nėra pakankamai ištirta dėl situacijos naujumo, o autorių nuomonės kai kuriais klausimais nesutampa. Ryškiausias poveikis akcentuojamas oro transportui, o mažiausiai tirta kelių transporto veikla, kuri Lietuvoje sudaro didžiausią dalį iš visų transporto rūšių. Pastebima, kad transporto įmonės jaučia stiprų pelningumo rodiklių mažėjimą COVID-19 pirmosios bangos metu. Atliekant tyrimą ekspertinės apklausos būdu išskirti labiausiai paveikti kelių transporto įmonių pelningumo ir likvidumo rodikliai. Santykiniai finansiniai rodikliai ir finansinių rezultatų priklausomybių nuo koronaviruso sukelto karantino tyrimas, atliktas pasitelkiant porinę koreliacinę analizę, parodė, kad įmonėse egzistuoja nevienodas ryšys tarp karantino dienų skaičiaus Lietuvoje ir kelių transporto įmonių finansinių santykinių rodiklių. Todėl tikėtina, kad COVID-19 sukelta krizė, priklausomai nuo įmonės veiklos, gali turėti teigiamą arba neigiamą poveikį įmonės finansiniams rezultatams. Tačiau tam tikru atveju poveikio gali išvis nebūti. Stebint nuolat besikeičiančią koronaviruso krizę ir supančią ekonominę situaciją, svarbus neatidėliotinas ir nuolatinis įsitraukimas į įmonių finansinės situacijos stebėjimą ir kontrolę. The evolving situation due to COVID-19 is causing a crisis not only in terms of health but also in economic terms. Companies are encountering urgent solutions to avoid financial problems. In both theory and practice the impact of the coronavirus outbreak on the transport companies mostly is negative, but there are not enough researches of this topic due to novelty of situation. Part of the authors do not agree on some issues, so this thesis will be relevant for a long time. According to literature review, is is observed that transport companies are experiencing a significant decrease in profits during the first and second waves of COVID-19 outbreak. The study uses the expert survey to identify the most affected indicators of profitability and liquidity of the road transport companies. The relative financial ratios and the study of the dependence of financial results on the coronavirus outbreak show that there is an unequal correlation relationship between the number of quarantine days in Lithuania and the financial rations of road transport companies. It is likely that the COVID-19 crisis may have both positive and negative effects or no effect on the financial performance of transport companies. Immediate and continuous involvement in monitoring and controlling on the financial situation of the company is very important during COVID-19 crisis.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ “Lituanistika”, Inte...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ “Lituanistika”, Inte...arrow_drop_down
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    Authors: Boniakou Marina;

    Στα πλαίσια της παρούσης εργασίας σχεδιάστηκαν, συντέθηκαν και πρόκειται να αξιολογηθούν, ως προς την φαρμακολογική τους δράση, νέα παράγωγα της ορμόνης μελατονίνης, η οποία αποτελεί τον κύριο κιρκαδιανό ρυθμιστή στον οργανισμό μας, επηρεάζοντας πλήθος φυσιολογικών λειτουργιών. Στο εισαγωγικό μέρος παρατίθενται γενικά στοιχεία για την μελατονίνη, όπως η βιοσύνθεσή της, ο μεταβολισμός, σημαντικές φαρμακολογικές της δράσεις, καθώς και θεραπευτικές της χρήσεις. Επίσης, παρατίθενται στοιχεία για το φαρμακοκινητικό και τοξικολογικό προφίλ της ορμόνης, καθώς και το ρόλο της, ως συμπλήρωμα διατροφής. Επίσης, παρουσιάζονται νέα δεδομένα που αφορούν στη χρήση της μελατονίνης στην θεραπεία κατά του COVID-19. Στη συνέχεια, αναλύονται οι κατηγορίες θέσεων δέσμευσης (binding sites) της μελατονίνης στον οργανισμό, μέσω των οποίων ασκεί τις δράσεις της, καθώς και δεδομένα σχετικά με τις σχέσεις δομής-δράσης της ορμόνης με τους υποδοχείς της, τα οποία ήταν μείζονος σημασίας για τον καθορισμό του θέματος αυτής της εργασίας. Στο επόμενο μέρος παρουσιάζονται οι στόχοι της παρούσης εργασίας και περιγράφονται οι συνθετικές πορείες, που ακολουθήθηκαν για την παρασκευή των νέων παραγώγων της μελατονίνης των γενικών τύπων 11, 12, 13 και 15. Τέλος, παρατίθεται το φαρμακολογικό πρωτόκολλο, το οποίο θα ακολουθηθεί για τον προσδιορισμό της συγγένειας σύνδεσης και της εκλεκτικότητας των νέων παραγώγων, ως προς τους υποδοχείς hΜΤ1 και hΜΤ2. In the context of this research work, new analogues of the hormone melatonin, which is the main circadian regulator in our body, affecting a number of normal functions, were designed, synthesized and will be evaluated in terms of their pharmacological action. The introductory part provides some general information on melatonin, such as its biosynthesis, metabolism, important pharmacological actions, and therapeutic uses. Data are reported on the pharmacokinetic and toxicological profile of the hormone, as well as its role as a dietary supplement. Also, some new data are presented, regarding the adjuvant use of melatonin in the treatment against COVID-19. Next, the categories of melatonin’s binding sites in the body through which it exerts its actions are analyzed, along with data on the SAR of the hormone with its receptors, which are of major importance in the design of the new compounds recorded herein. The next section presents the objectives of this work and the synthetic procedures followed for the preparation of the melatonin derivatives of the general type 11, 12, 13 and 15. In the last chapter, the pharmacological protocols referring to the binding affinity and selectivity of the new analogues for the hMT1 and hMT2 receptors are presented.

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      Pergamos
      2021
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  • Authors: Lombardozzi, Lorena; Copperman, Jeanette; Auma, Carolyn;

    This paper analyses the crisis of social reproduction through the dynamics of urban food provision in times of COVID-19. The rise of food poverty due to austerity policies resulted in an upsurge of political mobilisation and mushrooming of local coping strategies to support the social reproduction of cities. In this allegedly pandemic-led crisis the responsibility to compensate for the lack of care services, food and wages among vulnerable groups has become increasingly individualised because “austerity involves a territorial reworking of the state through which forms of care, social reproduction and intervention are increasingly sourced from communities themselves” (Strong, 2020; p.212). Through semi-structured interviews with civil society organizations and charities, ethnographic research with local food groups and food banks in North-East London and analysis of secondary material, this paper firstly explores how local food solidarity initiatives organise and mobilise people, manage commodities and urban space to tackle food poverty in North-East London during the COVID19 pandemic. Secondly, by using the concept of localised resistance to the corporate-led food system, this paper explores the inter-scalar tensions between the state-level and localised food solidarity initiatives to highlight the inadequacy of the current food system in tackling urban food insecurity. Through a social reproduction framework, the paper shows that the state-led food strategies, based on short-term, scattered, top-down and under-funded initiatives have been both the cause and consequence of the current food poverty crisis. Ultimately, the article proposes to reverse the order of causation: rather than claiming that COVID-19 has created a food crisis, we claim that COVID-19 has only shed light on preexisting contradictions in the provision of food in urban areas. The crisis has for long been contrasted by local strategies of solidarity, often in contraposition with both market and state.

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    Цель: изоляция коронавируса SARS-CoV-2 из образцов носоглоточных мазков, положительных на наличие РНК SARS-CoV-2, получение инактивированного цельновирионного антигена и изучение его антигенных свойств. Материалы и методы: изоляцию вируса проводили на культуре клеток Vero из вируссодержащего образца клинического материала (мазок из носоглотки). Эффективность репликации вируса SARS-CoV-2 на культуре клеток оценивали по динамике появления цитопатического действия и наличию вирусной РНК при анализе культуральной жидкости методом обратной транскрипции – полимеразной цепной реакции. Очистку, концентрацию и инактивацию вирусного препарата проводили по стандартной методике. Степень чистоты очищенного препарата и профиль вирусных белков определяли методом электрофореза в 10% полиакриламидном геле с добавлением додецилсульфата натрия. Наличие и специфичность вирусных белков выявляли с помощью сывороток крови реконвалесцентов с диагнозом «COVID-19» методами иммуноферментного анализа и иммуноблоттинга. Результаты: из вируссодержащего клинического образца был выделен изолят SARS-CoV-2/human/RUS/ Nsk-FRCFTM-1/2020 и получен очищенный, концентрированный, инактивированный цельновирионный антиген, содержащий три структурных белка – гликопротеин S (примерно 200 кДа), нуклеопротеин N (48 кДа) и матриксный М (20-25 кДа), выявляемые антителами сывороток крови реконвалесцентов с диагнозом COVID-19. Заключение: показана возможность изоляции коронавируса SARS-CoV-2 на культуре клеток Vero. В очищенном вирусном препарате, инактивированном в лизирующем растворе, сохраняется антигенная специфичность трех структурных вирусных белков (S, N, и М), выявляемых антителами сывороток крови реконвалесцентов с диагнозом COVID-19. Инактивированный цельновирионный антиген изолята SARS-CoV-2/human/ RUS/Nsk-FRCFTM-1/2020 может быть использован для изучения антигенных иммуномодулирующих свойств вирусных белков, получения иммунных сывороток лабораторных животных, а также в качестве компонента тест-систем для выявления специфичных антител методом ИФА и иммуноблоттинга.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Khamis, Melanie; Prinz, Daniel; Newhouse, David; Palacios-Lopez, Amparo; +2 Authors

    The economic crisis caused by the COVID-19 pandemic sharply reduced mobility and economic activity, disrupting the lives of people around the globe. This brief presents estimates on the crisis’ impact on labor markets in 39 countries based on high-frequency phone survey (HFPS) data collected between April and July 2020. Workers in these countries experienced severe labor market disruptions following the COVID-19 outbreak. 34 percent of respondents reported stopping work, 20 percent of wage workers reported lack of payment for work performed, 9 percent reported job changes due to the pandemic, and 62 percent reported income loss in their household. Measures of work stoppage and income loss in the HFPS are generally consistent with GDP growth projections in Latin America and the Caribbean but not in Sub-Saharan Africa, indicating that the phone survey data contributes valuable new information about the impacts of the crisis. Ensuring availability of such critical data in the future will require investments into statistical and physical infrastructure as well as human capital to set up Emergency Observatories, which can rapidly deploy phone surveys to inform decision makers.

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    Authors: Domínguez Castillo, José Gabriel; Cisneros Cohernour, Edith Juliana; Ortega Maldonado, Alvaro; Ortega Carrillo, José Antonio;

    This article arises as a result of the great uncertainty that currently exists in the educational context as a consequence of the implementation of an emergency model of distance education in times of COVID-19 throughout the world. The work provides the perspective of 2063 students from diverse contexts in the Mexican Southeast, who answered an instrument that evaluates four domains of the distance learning process: assignments and strategies, course design, communication and interaction, content and attitude. There were notable differences in the perceptions of urban and rural students in all the domains evaluated. Communication and interaction obtained the highest scores for students in rural and urban contexts, in contrast, the lowest scores recorded for both contexts were: Design of assignments and strategies for urban contexts and the Attitude domain for rural contexts. One of the conclusions of this study shows the disadvantages of students belonging to rural communities and the possible increase in inequality gaps in access to knowledge during confinement. Este artículo surge como resultado de la gran incertidumbre que existe actualmente en el contexto educativo como consecuencia de la implementación de un modelo de emergencia de educación a distancia en tiempos de COVID-19 en todo el mundo. El trabajo aporta la perspectiva de 2063 estudiantes de diversos contextos del sureste mexicano, que contestaron un instrumento que evaluó cuatro dominios del proceso de enseñanza a distancia: Tareas y estrategias, Diseño del curso, Comunicación e Interacción, Contenido y Actitud. Existieron notables diferencias en cuanto a las percepciones de los estudiantes urbanos y rurales en todos los dominios evaluados. La Comunicación e interacción obtuvo el puntaje más alto en los estudiantes de contextos rurales y urbanos, en contraste los más bajos registrados para los dos contextos fueron: Diseño de tareas y estrategias para los contextos urbanos y el dominio Actitud para los contextos rurales. Una de las conclusiones de este estudio evidencia las desventajas en las que se encuentran los estudiantes pertenecientes a las comunidades rurales y el posible aumento en las brechas de desigualdad de acceso al conocimiento durante el confinamiento.

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    Re-Unir
    2022
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    Authors: Gabinete de Prensa ISCIII;

    Noticia publicada en la Web del ISCIII 21/10/2021 Nota de prensa sobre Los datos de la 8ª ronda de la encuesta COSMO-Spain de percepción social de la pandemia confirman el aumento en la confianza en las vacunas, con un nuevo máximo; el 89% de las personas encuestadas se pondría una dosis adicional si las autoridades lo recomendasen. Desciende la preocupación por el SARS-Cov-2 y la COVID-19, crece el optimismo sobre las perspectivas de la pandemia, se reduce la búsqueda de información y la comunidad científica sigue siendo el colectivo que más confianza genera. No

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    Authors: Polívka, Vojtěch;

    Pandemie COVID-19 bez pochyby narušila životy všech a způsobila globální krizi, která do této doby neměla obdoby. V důsledku pandemie se objevily dva nebezpečné fenomény, které řešení krize neusnadnily. Prvním fenoménem je fenomén odpůrců očkování také známých jako anti-vax. Druhým fenoménem jsou dezinformace a taktéž fake news. Dezinformace v období této krize přinesly názorové proudy, které u občanů vyvolávaly nechuť dodržovat opatření a odmítat nebezpečí šíření tohoto viru. Zároveň v případě řešení tohoto onemocnění pomocí vakcinace byla podrývána důvěra v její bezpečnost či účinnost. Pomocí rámcové analýzy dezinformačních webů bylo identifikováno devět rámců, které napomáhají k odmítání či odkládání vakcinace. Tyto rámce byly hledány ve veřejné diskusi pod články z mainstream zpravodajských webů s cílem zjištění, jak se tyto rámce do veřejné diskuse přenáší. Obhájeno The Pandemic of COVID-19 with no doubts changed the life of everyone and caused global crisis that had no analogues till this day. As a result of the pandemic, two dangerous phenomena have emerged that have not made it easier to resolve the crisis. The first phenomenon is the phenomenon of vaccine opponents also known as anti-vax. The second phenomenon is desinformation also known as fake news. Desinformation in the period time of this crisis brought opinions that made citizens disrespect measures against the spread of virus. At the same time was undermined the confidence, efficacy and safety of vaccine against this virus.

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    Authors: Sánchez González, Ángela; Bravo Gómez, Corina;

    Las enfermedades neurodegenerativas son dolencias que afectan principalmente a las neuronas del cerebro. La más común es la enfermedad de Alzheimer, seguida de la enfermedad de Parkinson, la demencia senil y los accidentes cerebrovasculares. El objetivo principal del trabajo es comprobar si la COVID afecta de alguna forma a estas enfermedades. El presente trabajo ha contado con la colaboración del Dr. Alberto Rábano, patólogo dela fundación Cien y director de tejidos. Según sus observaciones, la COVID está afectando al Sistema Nervioso Central (SNC), con manifestaciones como encefalitis que derivan en ictus; los cuales, a su vez, están asociados a graves secuelas funcionales. Tanto las observaciones del Dr. Rábano como los resultados de la encuesta realizada para este proyecto, revelan que las enfermedades neurodegenerativas no están empeorando por la COVID. Pero esta infección se asocia a mayor riesgo de ictus lo que traerá consecuencias a futuro, aunque aún es pronto para asentar estas observaciones. Según las declaraciones del Dr. Rábano, el factor de riesgo para la enfermedad del Alzheimer es el gen APOE 4, y que a su vez es un factor de riesgo para la COVID; las personas que tienen esta forma del gen, han tenido los síntomas más graves. Según estudios realizados a un grupo de personas, aquellos que tenían esta variante genética dieron positivo en COVID-19 lo que sugiere que el riesgo se duplica. Además, la COVID está causando una serie de daños que van a propiciar la aparición del Alzheimer; a su vez el aislamiento y el confinamiento ha afectado negativamente a las personas que presentan estas enfermedades. Técnico Superior en Anatomía Patológica y Citodiagnóstico Universidad Europea de Madrid Presencial

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    Authors: Periokaitė, Paulina; Dobrovolskienė, Nomeda;

    Pasaulyje besikeičianti situacija dėl COVID-19 protrūkių sukelia krizinę padėtį ne tik sveikatos apsaugos atžvilgiu, bet ir ekonominiu. Įmonės susiduria su skubotais sprendimais siekdamos išvengti finansinių problemų ar net bankroto. Tiek teorijoje, tiek praktikoje dažnai aptinkamas labiau neigiamas nei teigiamas koronaviruso protrūkio poveikis transporto sektoriaus verslui, tačiau ši tema dar nėra pakankamai ištirta dėl situacijos naujumo, o autorių nuomonės kai kuriais klausimais nesutampa. Ryškiausias poveikis akcentuojamas oro transportui, o mažiausiai tirta kelių transporto veikla, kuri Lietuvoje sudaro didžiausią dalį iš visų transporto rūšių. Pastebima, kad transporto įmonės jaučia stiprų pelningumo rodiklių mažėjimą COVID-19 pirmosios bangos metu. Atliekant tyrimą ekspertinės apklausos būdu išskirti labiausiai paveikti kelių transporto įmonių pelningumo ir likvidumo rodikliai. Santykiniai finansiniai rodikliai ir finansinių rezultatų priklausomybių nuo koronaviruso sukelto karantino tyrimas, atliktas pasitelkiant porinę koreliacinę analizę, parodė, kad įmonėse egzistuoja nevienodas ryšys tarp karantino dienų skaičiaus Lietuvoje ir kelių transporto įmonių finansinių santykinių rodiklių. Todėl tikėtina, kad COVID-19 sukelta krizė, priklausomai nuo įmonės veiklos, gali turėti teigiamą arba neigiamą poveikį įmonės finansiniams rezultatams. Tačiau tam tikru atveju poveikio gali išvis nebūti. Stebint nuolat besikeičiančią koronaviruso krizę ir supančią ekonominę situaciją, svarbus neatidėliotinas ir nuolatinis įsitraukimas į įmonių finansinės situacijos stebėjimą ir kontrolę. The evolving situation due to COVID-19 is causing a crisis not only in terms of health but also in economic terms. Companies are encountering urgent solutions to avoid financial problems. In both theory and practice the impact of the coronavirus outbreak on the transport companies mostly is negative, but there are not enough researches of this topic due to novelty of situation. Part of the authors do not agree on some issues, so this thesis will be relevant for a long time. According to literature review, is is observed that transport companies are experiencing a significant decrease in profits during the first and second waves of COVID-19 outbreak. The study uses the expert survey to identify the most affected indicators of profitability and liquidity of the road transport companies. The relative financial ratios and the study of the dependence of financial results on the coronavirus outbreak show that there is an unequal correlation relationship between the number of quarantine days in Lithuania and the financial rations of road transport companies. It is likely that the COVID-19 crisis may have both positive and negative effects or no effect on the financial performance of transport companies. Immediate and continuous involvement in monitoring and controlling on the financial situation of the company is very important during COVID-19 crisis.

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    Authors: Boniakou Marina;

    Στα πλαίσια της παρούσης εργασίας σχεδιάστηκαν, συντέθηκαν και πρόκειται να αξιολογηθούν, ως προς την φαρμακολογική τους δράση, νέα παράγωγα της ορμόνης μελατονίνης, η οποία αποτελεί τον κύριο κιρκαδιανό ρυθμιστή στον οργανισμό μας, επηρεάζοντας πλήθος φυσιολογικών λειτουργιών. Στο εισαγωγικό μέρος παρατίθενται γενικά στοιχεία για την μελατονίνη, όπως η βιοσύνθεσή της, ο μεταβολισμός, σημαντικές φαρμακολογικές της δράσεις, καθώς και θεραπευτικές της χρήσεις. Επίσης, παρατίθενται στοιχεία για το φαρμακοκινητικό και τοξικολογικό προφίλ της ορμόνης, καθώς και το ρόλο της, ως συμπλήρωμα διατροφής. Επίσης, παρουσιάζονται νέα δεδομένα που αφορούν στη χρήση της μελατονίνης στην θεραπεία κατά του COVID-19. Στη συνέχεια, αναλύονται οι κατηγορίες θέσεων δέσμευσης (binding sites) της μελατονίνης στον οργανισμό, μέσω των οποίων ασκεί τις δράσεις της, καθώς και δεδομένα σχετικά με τις σχέσεις δομής-δράσης της ορμόνης με τους υποδοχείς της, τα οποία ήταν μείζονος σημασίας για τον καθορισμό του θέματος αυτής της εργασίας. Στο επόμενο μέρος παρουσιάζονται οι στόχοι της παρούσης εργασίας και περιγράφονται οι συνθετικές πορείες, που ακολουθήθηκαν για την παρασκευή των νέων παραγώγων της μελατονίνης των γενικών τύπων 11, 12, 13 και 15. Τέλος, παρατίθεται το φαρμακολογικό πρωτόκολλο, το οποίο θα ακολουθηθεί για τον προσδιορισμό της συγγένειας σύνδεσης και της εκλεκτικότητας των νέων παραγώγων, ως προς τους υποδοχείς hΜΤ1 και hΜΤ2. In the context of this research work, new analogues of the hormone melatonin, which is the main circadian regulator in our body, affecting a number of normal functions, were designed, synthesized and will be evaluated in terms of their pharmacological action. The introductory part provides some general information on melatonin, such as its biosynthesis, metabolism, important pharmacological actions, and therapeutic uses. Data are reported on the pharmacokinetic and toxicological profile of the hormone, as well as its role as a dietary supplement. Also, some new data are presented, regarding the adjuvant use of melatonin in the treatment against COVID-19. Next, the categories of melatonin’s binding sites in the body through which it exerts its actions are analyzed, along with data on the SAR of the hormone with its receptors, which are of major importance in the design of the new compounds recorded herein. The next section presents the objectives of this work and the synthetic procedures followed for the preparation of the melatonin derivatives of the general type 11, 12, 13 and 15. In the last chapter, the pharmacological protocols referring to the binding affinity and selectivity of the new analogues for the hMT1 and hMT2 receptors are presented.

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    2021
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      2021
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  • Authors: Lombardozzi, Lorena; Copperman, Jeanette; Auma, Carolyn;

    This paper analyses the crisis of social reproduction through the dynamics of urban food provision in times of COVID-19. The rise of food poverty due to austerity policies resulted in an upsurge of political mobilisation and mushrooming of local coping strategies to support the social reproduction of cities. In this allegedly pandemic-led crisis the responsibility to compensate for the lack of care services, food and wages among vulnerable groups has become increasingly individualised because “austerity involves a territorial reworking of the state through which forms of care, social reproduction and intervention are increasingly sourced from communities themselves” (Strong, 2020; p.212). Through semi-structured interviews with civil society organizations and charities, ethnographic research with local food groups and food banks in North-East London and analysis of secondary material, this paper firstly explores how local food solidarity initiatives organise and mobilise people, manage commodities and urban space to tackle food poverty in North-East London during the COVID19 pandemic. Secondly, by using the concept of localised resistance to the corporate-led food system, this paper explores the inter-scalar tensions between the state-level and localised food solidarity initiatives to highlight the inadequacy of the current food system in tackling urban food insecurity. Through a social reproduction framework, the paper shows that the state-led food strategies, based on short-term, scattered, top-down and under-funded initiatives have been both the cause and consequence of the current food poverty crisis. Ultimately, the article proposes to reverse the order of causation: rather than claiming that COVID-19 has created a food crisis, we claim that COVID-19 has only shed light on preexisting contradictions in the provision of food in urban areas. The crisis has for long been contrasted by local strategies of solidarity, often in contraposition with both market and state.

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    Цель: изоляция коронавируса SARS-CoV-2 из образцов носоглоточных мазков, положительных на наличие РНК SARS-CoV-2, получение инактивированного цельновирионного антигена и изучение его антигенных свойств. Материалы и методы: изоляцию вируса проводили на культуре клеток Vero из вируссодержащего образца клинического материала (мазок из носоглотки). Эффективность репликации вируса SARS-CoV-2 на культуре клеток оценивали по динамике появления цитопатического действия и наличию вирусной РНК при анализе культуральной жидкости методом обратной транскрипции – полимеразной цепной реакции. Очистку, концентрацию и инактивацию вирусного препарата проводили по стандартной методике. Степень чистоты очищенного препарата и профиль вирусных белков определяли методом электрофореза в 10% полиакриламидном геле с добавлением додецилсульфата натрия. Наличие и специфичность вирусных белков выявляли с помощью сывороток крови реконвалесцентов с диагнозом «COVID-19» методами иммуноферментного анализа и иммуноблоттинга. Результаты: из вируссодержащего клинического образца был выделен изолят SARS-CoV-2/human/RUS/ Nsk-FRCFTM-1/2020 и получен очищенный, концентрированный, инактивированный цельновирионный антиген, содержащий три структурных белка – гликопротеин S (примерно 200 кДа), нуклеопротеин N (48 кДа) и матриксный М (20-25 кДа), выявляемые антителами сывороток крови реконвалесцентов с диагнозом COVID-19. Заключение: показана возможность изоляции коронавируса SARS-CoV-2 на культуре клеток Vero. В очищенном вирусном препарате, инактивированном в лизирующем растворе, сохраняется антигенная специфичность трех структурных вирусных белков (S, N, и М), выявляемых антителами сывороток крови реконвалесцентов с диагнозом COVID-19. Инактивированный цельновирионный антиген изолята SARS-CoV-2/human/ RUS/Nsk-FRCFTM-1/2020 может быть использован для изучения антигенных иммуномодулирующих свойств вирусных белков, получения иммунных сывороток лабораторных животных, а также в качестве компонента тест-систем для выявления специфичных антител методом ИФА и иммуноблоттинга.

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