bluuebunny/crossref_metadata_2025 huggingface dataset:
Lesson Study: reconstruir el conocimiento práctico en y para la profesionalización docente de la UNAE
Authors: Sumba Arévalo Víctor Miguel , Mejía Vera Johanna Grace
Published: June 2021

En este estudio se presentan los procesos y resultados obtenidos de la aplicación de la metodología Lesson Study con docentes en ejercicio, y que a la vez son estudiantes de la Universidad Nacional de Educación en Ecuador de la carrera de Educación Básica modalidad a distancia del Plan para la Profesionalización Docente. La implementación de la metodología nace desde la propuesta curricular de la Universidad orientada a formar docentes capaces de identificar y proponer alternativas de solución in situ a través de la investigación acción cooperativa. En tal sentido, desde el enfoque cualitativo de análisis e interpretación de textos (Proyecto Integrador de Saberes), se investiga como ésta conlleva a poner en evidencia los conocimientos, habilidades, actitudes, emociones y valores que forman parte y configuran su actuación en el aula; también permite conocer y comprender las acciones y/o características de esta metodología para reconstruir el conocimiento práctico de los docentes.
Comprobando la eficacia de materiales reflexivos sobre competencias profesionales docentes. Un estudio de investigación-acción
Authors: Moral-Santaella Cristina , Ritacco-Real Maximiliano , Morales-Cabezas Jerónimo
Published: June 2021

Formar docentes profesionales/competentes es el reto a superar por cualquier programa de formación del profesorado, pero las facultades de educación españolas no dirigen una atención expresa a salvar este problema. El proyecto de investigación-acción que presentamos muestra la eficacia de un material sobre competencias profesionales docentes y el grado en que consigue formar profesores más competentes/expertos, aunque también muestra una gran resistencia en su utilización. La discusión de los resultados, aunque con las limitaciones propias de los estudios de investigación-acción, ofrece una reflexión propicia para la mejora de los actuales programas de formación de profesores de nuestras facultades de educación.
Redes profesionales en tiempo de Covid19: compartiendo buenas prácticas para el uso de TIC en el prácticum
Authors: Ruiz-Rey Francisco-José , Cebrián-Robles Violeta , Cebrián-de-la-Serna Manuel
Published: June 2021

El trabajo entre docentes compartiendo experiencias y reflexionando sobre las prácticas de enseñanza sobre video experiencias es una de las iniciativas más fructíferas de las redes profesionales. Ese ha sido el objetivo de este trabajo, centrado en reflexiones y análisis sobre experiencias en el uso de TIC en el prácticum entre 41 investigadores y docentes de 17 Universidades Iberoamericanas (2019-2021) mediante la metodología de anotaciones de video durante la pandemia Covid19. Se analizaron 79 anotaciones con 6 etiquetas de análisis sobre las experiencias compartidas. La investigación siguió métodos mixtos sobre el análisis del etiquetado social. Los resultados muestran una metodología eficaz para compartir experiencias entre docentes en redes y a distancia, basada en el análisis de anotaciones y etiquetado social sobre vídeo experiencias. Facilita un consenso de voces y centra la atención de la red sobre diferentes temas de interés para el aprendizaje y desarrollo profesional.
Educar el carácter de nuestros estudiantes
Authors: Aguilar-Palomo Desirée
Published: June 2021

A lo largo de los once capítulos se aborda, desde diferentes perspectivas, la formación del carácter partiendo de su práctica educativa, sin desestimar el resto de contextos implicados para la formación integral del individuo. Permite mostrar al cuerpo profesional educativo los aspectos necesarios que ayudan a modelar la forma de ser de sus estudiantes, es decir, los retos a los que se deben enfrentar para no formar únicamente a personas técnicamente competentes.
Mitwirkungsrechte der Arbeitnehmenden im schweizerischen Arbeitsrecht – Einfluss des Arbeitsvölkerrechts und des EU-Arbeitsrechts
Authors: Pärli Kurt
Published: June 2021

Demokratie spielt im schweizerischen Selbstverständnis eine zentrale Rolle. In einem scharfen Kontrast zu den weitreichenden politischen Mitbestimmungsrechten stehen in der Schweiz die rechtlichen Möglichkeiten der Mitbestimmung am Arbeitsplatz und im Unternehmen. Vorschläge für eine stärkere Verankerung der Partizipationsrechte der Arbeitnehmenden hatten politisch keine Chance. Es bedurfte vielmehr einen Anstoss von Aussen – der geplante EWR-Beitritt –, damit die heute geltende minimale Mitwirkungsregelung Eingang in schweizerisches Recht fanden.So deckt sich heute das schweizerische Recht der Mitwirkung der Arbeitnehmenden mit den Anforderungen, die sich aus dem Arbeitsvölkerrecht und aus dem EU-Recht ergeben. Die geltenden Mitwirkungsregelungen werden durch die Veränderungen der Arbeitswelt im Zuge der Digitalisierung herausgefordert. Gefordert sind von den Sozialpartnern, aber auch dem Gesetzgeber, den Gerichten und der Arbeitsrechtswissenschaft, Ideen und Konzepte, wie Mitsprache und Mitbestimmung der Beschäftigten in neuen hybriden Arbeitsformen möglich ist.
Soft Law in EU Migration Cooperation with Associated Countries – A Comparative Perspective
Authors: Wolf Anna
Published: June 2021

The war in Syria transformed the temporary stay of refugees in Turkey, Jordan and Lebanon into a protracted situation. These countries represent strategic partners to the EU in the governance of transit migration. The EU adopted three non-binding bilateral arrangements: The Turkey Statement, the Jordan Compact and the Lebanon Compact. This thesis pursued the following research question: What are the legal effects of the Turkey Statement, the Jordan Compact and the Lebanon Compact on the relations between the EU and these three associated countries in terms of migration and how do they impact the situation of Syrian refugees hosted in these countries? The Compacts had facilitating and strengthening legal effects on the association links with the EU. In contrast, the Turkey Statement had transformative and multilevel legal effects that contributed to an informalization of relations. This study provided one approach to the lack of legal research on the external dimension of EU governance.
Spielraum für Bankegoismen in der EU-Bankenordnung
Authors: Krayer Georg F.
Published: June 2021

Dieser Text gibt einen Vortrag von Dr. iur. Georg F. Krayer, Präsident des Verwaltungsrates der Bank Sarasin & Cie AG Basel und Präsident der Schweizerischen Baniervereinigung, wieder. Er wurde am 5. November 2002 im Europainstitut gehalten. Zunächst wird die EU-Bankenordnung skizziert. Im zweiten Teil des Referates wird dann auf die geplante Zinsbesteuerung der EU eingegangen. Das schweizerische Modell zur Förderung der Steuergerechtigkeit und die Gründe für die Ablehnung eines automatischen Meldeverfahrens werden eingehend erörtert. Insbesondere wird gezeigt, dass der schweizerische Vorschlag einer Zahlstellensteuer auch dem Anliegen der EU Rechnung trägt.
Die Zwangslizenzierung von Immaterialgüterrechten nach Art. 82 EG: Schutz vor Wettbewerb oder Schutz des Wettbewerbs?
Authors: Zimmermann Daniel
Published: June 2021

Die vorliegende Arbeit untersucht vor allem die Rechtsentwicklung in der Europäischen Union (EU) zur Zwangslizenzierung von Immaterialgüterrechten vom ersten Entscheid des Europäischen Gerichtshofes (EuGH) im Jahre 1988 bis heute. Die Arbeit verfolgt jedoch auch einen interdisziplinären Ansatz und versucht, die Rechtsprechung der europäischen Organe zur Zwangslizenzierung von Immaterialgüterrechten unter ökonomischen Gesichtspunkten zu analysieren und zu bewerten: Die Arbeit soll einen bescheidenen Beitrag zur neueren Wissenschaftsdisziplin „Ökonomische Analyse des Rechts” (Law and Economics) leisten, von der einige Stimmen behaupten, sie sei derzeit „the single most influential jurisprudential school”.
Der aussenpolitische Handlungsspielraum der Schweiz als Nichtmitglied der Europäischen Union: ein Blick auf einige Aspekte der Friedensförderung
Authors: Goetschel Laurent , Michel Daniel
Published: June 2021

Indem die Schweiz nicht der EU angehört, nimmt sie auch nicht an deren Gemeinsamen Aussen- und Sicherheitspolitik (GASP) teil. Daraus resultieren einerseits eine grössere Autonomie, andererseits ein geringerer Einfluss auf die Politik der 27 EU-Staaten. Es stellt sich die Frage, welches insgesamt die Effekte auf den aussenpolitischen Handlungsspielraum der Schweiz sind. Zur Beantwortung dieser Frage wurde in dieser Arbeit zunächst die Auswirkungen der GASP auf Mitgliedstaaten kleiner bis mittlerer Grösse untersucht. Dann wurden die Optionen analysiert, die sich einem Drittland wie der Schweiz zur Mitwirkung an der GASP und auch an der Europäischen Sicherheits- und Ver- teidigungspolitik (ESVP) bieten. Schliesslich wurden auch noch die Herausforderungen ausgearbeitet, die sich der Schweiz zur Führung ihrer Friedensförderungspolitik ausserhalb der EU stellen.
Agrarfreihandel Schweiz - EU: Analyse vor dem Hintergrund der Käsemarkt-Liberalisierung
Authors: Breitschmid Christine
Published: June 2021

Diese Arbeit analysiert die Folgen der Liberalisierung des Käsemarktes. Anhand der neuen Handelstheorie wird untersucht, wie sich das Handelsmuster im Käsemarkt seit der Liberalisierung entwickelt hat und wie sich die inländische Produktionsstruktur verändert hat. Die Anwendung der neuen Handelstheorie auf den liberalisierten Käsemarkt soll insbesondere aufzeigen, ob der intra-industrielle Handel zwischen der Schweiz und der EU zugenommen hat. Ist dies der Fall, würde das bedeuten, dass die Schweizer Produktvarianten gegenüber den europäischen Produktvarianten konkurrenzfähig sind. So wird aufgezeigt, welche möglichen Chancen und Herausforderungen durch eine Agrarmarktliberalisierung entstehen werden.
Evaluation of Secondary Metabolites of Some Fungi Isolated From Beach Soils of Lagos, Nigeria Against Some Pathogens
Authors: Ahmed Risikat Nike , Mercy Bamigboye Oluwaseyi , Idris Sheriffdeen Olakunle
Published: June 2021

Three beach soils in Lagos, Nigeria were screened for the presence of antibiotic producing fungi against 8 test pathogenic bacteria & fungi. The physiochemical parameters of the soils were determined following standard procedures. Soil plate dilution method was employed for isolation of marine fungi and they were identified based on cultural and microscopic characteristics. Primary screening of isolated fungi for antibiotic potential was determined by perpendicular streak method against known pathogenic test organisms (Escherichia coli, Saphylococcus aureus, Klebsiella pnuemoniae, Pseudomonas aeruginosa, Candida albicans, Saccharomyces cerevisiae,Aspergillus niger and Aspergillus fumigatus). Further sreening of the product of secondary metabolism [antibiotic] of the active fungi was done by agar disc diffusion assay. The fungus with the highest secondary activity was subjected to molecular analysis for further identification. pH of beach soils was alkaline ranging from 7.6-8.0, while temperature and moisture were normal ranging from 26.333 Â± 1.155a-30.333 Â± 0.577aand 7.142 Â± 1.497a-10.030 Â± 3.130a respectively. A total of four fungal species of 2 different genera were isolated from the beaches ;Aspergillus niger,Aspergillus flavus,Penicillium purpurogenum and Penicillium islandicum. Both primary and secondary assays revealed only antibacterial activities against Staphylococcus aureus and Psedomonas aeruginosa with no effect on all test fungi. Highest antibacterial activity[28+0.2a] was exhibited by the fungus identified as Penicillium purpurogenum. Fungi from beaches in Lagos, Nigeria may be a promising source of antibacterial agent useful in the treatment of infections caused by S. aureus and P. aeruginosa.
Fourier Transform Coding-based Techniques for Lossless Iris Image Compression
Authors: Al-Khafaji Ghadah , Ali Noor
Published: June 2021

Today, the use of iris recognition is expanding globally as the most accurate and reliable biometric feature in terms of uniqueness and robustness. The motivation for the reduction or compression of the large databases of iris images becomes an urgent requirement. In general, image compression is the process to remove the insignificant or redundant information from the image details, that implicitly makes efficient use of redundancy embedded within the image itself. In addition, it may exploit human vision or perception limitations to reduce the imperceptible information.      This paper deals with reducing the size of image, namely reducing the number of bits required in representing the image. This was performed by exploiting the transforms-based coding techniques of lossless base compression system. In these techniques, the first part looked at the traditional Fourier transform coding technique while the second part aimed at enhancing the performance of the traditional transformation techniques. This was achieved once by overcoming the inherited problems of this technique that suffers from the complex nature base, then latter by incorporating the double base coding techniques of hierarchal scheme, as  mixing of both discrete wavelet transform and zipper coding techniques.

     The test results indicated that the proposed scheme produced high compression ratio with identically preserving the quality of the compressed (decoded) image.
Using Remote Sensing and GIS to Study Morphological Analysis of Kirkuk Province
Authors: Mohammed Anas A. , Resen Ali K. , Mohammed Amen A.
Published: June 2021

Remote sensing is a source of up-to-date information. The present study relied on various approaches for gathering information, including descriptive, quantitative and quantitative analytical processes. Particularly,  we conducted the analysis of the satellite data ETM + of the satellite Landsat7 and the digital models of Digital Elevation Model of SRTM using ArcGIS9.2. The model depends on primary mathematical equations and  constitutes an essential base for GIS applications that rely on data, computer, and software, performing the processes of data entry, analysis and processing. This paper deals with the geomorphological characteristics of a selected study area in Kirkuk province. The characteristics of the water network were determined in terms of direction and the pattern of the water basin using the automated process based on the employment of the applications of the GIS. The study revealed that remote sensing is one of the beneficial techniques for monitoring the changes, geomorphological phenomena, and shapes of the earth's surface, as well as determining their dimensions and slopes through a set of analytical maps by geographic information systems for the study area.
Correlation the Cytomegalovirus (CMV) IgM Antibodies and Viral DNA Presence with Rheumatoid Arthritis (RA) in Iraqi Patients
Authors: Fadhil Hula Y.
Published: June 2021

In the Iraqi population, a high incidence (82.7%) of rheumatoid arthritis (RA) has been reported among the suspected patient. Many investigators studied the microbial infectious present in Iraqi patients with RA; however, to the best of our knowledge, there is no previous study detected the CMV DNA and antibodies to RA disease. Hence, the current study aimed to investigate the presence of CMV DNA and antibodies in Iraqi RA patients. A total of 58 blood samples were collected from patients with clinical signs of rheumatoid arthritis, along with 32 samples of apparently healthy individuals as a control group. These samples were tested for rheumatoid factor (RF), CMV IgM antibodies and viral DNA during the acute and the chronic periods of the autoimmune disease. The results showed that 46.6% (27/58) and 13.8% (8/58) of rheumatoid arthritis patients had positive reactions for IgM-CMV and CMV DNA, respectively, as compared to healthy individual. The highest rate of the viral occurrence was recorded in the aged and female RA patients (24 and 21 cases, respectively). Moreover, the most significant increases in RA appearance and CMV reactivation cases were observed in patients with a mean age higher than 40 years old. This finding pointed out the prevalence of viral infections mostly in RA patients aged more than 40 years old, accompanied by increased RA cases. This study concludes that patients with positive CMV must be tested for rheumatoid factor, especially when the viral DNA is present. Moreover, we recommend measuring TNF-Î± and IFN-Î³ as the proinflammatory cytokines that play an important role to protect against viral infection and prevent their reactivation in all RA patients.
A Study on the Scattering and Absorption Efficiencies of Si-Ag Coaxial Nanowire
Authors: Rzaij Jamal M , Nawaf Sameer O. , Khalaf Abdul Salam Mohammed
Published: June 2021

Scattering and Absorption Efficiencies of Si-Ag Coaxial nanowire (NWs) were simulated using Mie-Lorentz scattering approach. The thickness of Ag shell was fixed at around 10 nm with Si core diameter of (10, 20, 30 and 40) nm.  Scattering Efficiencies  and Absorption Efficiencies  of core-shell nanowire as a function of wavelength (300-2000 nm) within various core diameters were calculated. The study shows a remarkable behavior of scattering for un-polarized light in Silicon nanowire (core only) with wavelength of (320- 500nm). In other words, adding Ag shell has decreased the scattering efficiency of core-shell nanowire for all diameters.
Optical Properties of Mixed ZnO: Fe2O3 Grown via Pulsed laser deposition
Authors: Hanfoosh S. M. , Hassan N. K.
Published: June 2021

In this study, mixing of  zinc oxide (ZnO) nanoparticles with iron oxide(Fe2O3) at      (0, 0.1, 0.3, 0.5 and 1)%wt., are deposited on glass substrates by pulsed laser deposition (PLD) technique for study characterization ZnO:Fe2O3 as solar cell electrode. The profound effect of mixed film on the structural and optical of ZnO: Fe2O3 thin films was observed. Meanwhile, the films have polycrystalline Hexagonal structures for ZnO, Rhombohedra and cubic structure for Fe2O3, and as indicated by the X-ray diffraction patterns of the films. The mean crystallite size of ZnO increase with increasing mixed ratio. The direct energy gap (Eg) of ZnO is 3.36 eV and decreasing with increasing mixed ratio.
Surface Photometry of NGC 3 Lenticular Galaxy
Authors: Al-baqir Haydar R. , Ahmed Abdullah K. , Gamal Doaa
Published: June 2021

Lenticular galaxy NGC3 has been chosen to study the surface photometry using griz filter. The data where obtained from the seventh Sloan Digital Sky Survey (SDSS) Data Release seven (DR7), and main the image reduction was done by the pipeline of SDSS. The work was achieved by the ELLIPS task from the STSDAS ISOPHOTE package in the Image Reduction and Analysis Facility (IRAF).The overall structure of the galaxy (a bulge, a bar, isophotal contour maps, together with a bulge to disk decomposition of the galaxy images where achieved, Also, the photometric properties (the disk position angle, ellipticity, B4 and inclination of the galaxy) where estimated.
Investigate the Optimum Agricultural Crops Production Seasons in Salah Al-Din Governorate Utilizing Climate Remote Sensing Data and Agro-Climatic Zoning
Authors: Alwan Imzahim A. , Karim Hussein H. , Aziz Nadia A.
Published: June 2021

Agriculture is one of the major sources of livelihood for the Iraqi people as one-third of Iraq population resides in rural areas and depends upon agriculture for their livelihoods. This study aims to estimate the impact of temperature variability on crops productivity across the agro-climatic zones in Salah Al-Din governorate using climate satellite-based data for the period 2000 to 2018. The average annual air temperature based on satellite data was downloaded from the GLDAS Model NOAH025_M v2.1, and interpolates using Kriging interpolation/spherical model. Thirteen strategic crops were selected which is Courgette, garlic, Onion, Sweet Pepper, Watermelon, Melon, Cucumber, Tomato, Potato, Eggplant, Wheat, Barley, and Maize. Temperature requirements for each crop during the growing period were compared with actual temperature from GLDAS data. The study highlighted the impacts of temperature changes on agricultural productivity. The results show that there are some crops that are not achieving optimum productivity, such as Courgette first seasons (December-March), Garlic, Onion, and Cucumber. Whereas, there are other crops that achieve good productivity, such as Courgette second season (March- June), Sweet Pepper, Watermelon, Melon, Tomato, Potato, Eggplant, Maize, Wheat, and Barley. The study recommends proper mitigate and adaptive strategies to enhance the positive and lessen the adverse impacts of temperature changes on crops productivity across agro-climatic zones in Iraq.
Effect of Natural Phytase, Fermentation, and Baking Processes on Phytate Degradation in Wheat Bread Manufactured from Local Mills Flour
Authors: Nasser Jassim M. , Hammood Ezuldeen K.
Published: June 2021

The present study aims to investigate the effect of wheat natural phytase, fermentation and baking processes in the destruction of phytic acid during the process of making wheat bread for some Iraqi mills. The concentration of phytic acid was (850.32, 802.14, 531.84 mg / 100g) for the flour of AL-Brairie, AL-Nesr and AL-Al-Doura mills respectively. At the end of the fermentation processes, the decrease in the concentration of phytic acid in the samples produced from the flour obtained from the three mills was (47.06, 26.98, 40.00%) respectively, while inorganic phosphorus concentration in all treatments increased by 32.4, 42.37 and 36.21 %, respectively. It was found that the activity of wheat natural phytase enzyme varies according to the type of mill and the enzyme has been destroyed after the baking process for all treatments. It is clear that, with the effect of wheat natural phytase enzyme and fermentation and baking processes, the concentration of phytic acid may be reduced when preparing wheat bread for some mills by (26-47%).
Evaluation the Effect of Bio-Fertilization on Some Wheat (Triticum Aestivum) Growth Parameters under Drought Conditions
Authors: Saad Dina A. , Al-Shahwany Ayyad W. , Aboud Hadi M.
Published: June 2021

Field experiment was conducted during 2018- 2019 in loam soil at the research field of the Department of Biology, College of Science, Baghdad University, Baghdad, Iraq, to study the effect of bio-fertilizers and two levels of chemical fertilization ( 50% and 100%) in some agronomic traits of wheat Triticum aestivum L. cultivar IPA 99  by the genus Azotobacter chroococum and AMF Glomus mosseae singly or in combination under drought condition. The experimental design was a Completely Randomized Block Design (CRBD)with three replications. The results revealed that the application of bio-fertilizers reduced the negative impacts of water deficit. However,   (Azoto+AMF) were significantly increased  the means of plant height, flag leaf area, flag leaf chlorophyll content and the fresh weight of total vegetative ( 86.81 cm, 65.45 cm2, 49.55 SPAD, 37.93 g) respectively compared to the control treatment at 20% water deficit and 50% fertilization. Besides, there was no antagonism between A. chroococcum and Glomus mosseae, which can recommend to use them as bio-fertilizer.
NUCKS Promotes the Proliferation, Migration and Invasion of Lung Cancer Cells Through Pi3k/Akt Signalling Pathway
Authors: Hu Cheng , Zha Qian , Hua Ping , Xiao Lina , Pan Deng
Published: June 2021

Purpose: Nuclear ubiquitous casein and cyclin-dependent kinases substrate (NUCKS) overexpression has been reported in various types of cancers. The purpose of this study is to clarify the role of NUCKS, underlying the involvement of non-small-cell lung cancer, in the progression of lung cancer.

Methods: The small interfering ribonucleic acid (siRNA) of NUCKS was transfected into a lung cancer cell line (NCI-H460, A549, NCI-H1299 and NCI-H1975). Functional experiments (MTT assay, Annexin V-FITC/PI double staining assay, colony formation assay, wound healing assay and Transwell assay) were performed to measure the effects of NUCKS on lung cancer cell viability, migration, invasion and apoptosis.

Results: NUCKS was found to be up-regulated in lung cancer cells. Knockdown of NUCKS significantly altered lung cancer cell apoptosis, proliferation colony formation, invasion and migration. Moreover, knockdown of NUCKS attenuated the activation of the PI3K/AKT pathway in lung cancer cells.

Conclusion: NUCKS was overexpressed in lung cancer cells and played an important role in lung cancer by increasing cell growth through the PI3K/AKT signalling pathway. This in vitro study suggested NUCKS should be evaluated in a clinical setting as a novel biomarker and potential therapeutic target for lung cancer.
Team Science: Defining and Achieving Success
Authors: Azad Meghan B. , Rodriguez Natalie
Published: June 2021

Meghan Azad was the 2020 recipient of the CSCI Joe Doupe Young Investigator Award. Azad and Rodriguez co-direct a $14M research portfolio funded by the Canadian Institutes of Health Research, the Canadian Foundation for Innovation and the Bill and Melinda Gates Foundation. Spanning 45 countries, their acclaimed pediatric research is well known in clinical circles, highly cited by the scientific community and widely shared on mainstream and social media. In 2020, Azad was recognized among the WXN Top 100 Most Powerful Women in Canada and Rodriguez was named among the CBC Manitoba Future 40 Finalists. Here they share their Top 10 Tips for defining and achieving success in Team Science.
A AMOSTRAGEM EM SNOWBALL (BOLA DE NEVE) EM UMA PESQUISA QUALITATIVA NO CAMPO DA ADMINISTRAÇÃO
Authors: Bockorni Beatriz Rodrigues Silva , Gomes Almiralva Ferraz
Published: June 2021

A amostra em bola de neve, ou snowball, é uma técnica de amostragem que se utiliza de redes de referência, por isso, torna-se apropriada para pesquisas com grupos de difícil acesso ou até mesmo quando se trata de temas mais privados. O presente artigo objetivou discutir a adoção e o uso da amostragem em snowball em uma pesquisa qualitativa da área de Administração, discutindo suas limitações e vantagens. Para tal, foram utilizadas como referências Albuquerque (2009), Biernacki e Waldorf (1981), Baldin e Munhoz (2011). O estudo, portanto, conclui que a amostra em bola de neve é vantajosa, ao ser útil para pesquisas de cunho qualitativo. No entanto, deve-se compreender que este tipo de amostragem não se sustenta por si só, pois deve ser aliado a outros tipos, ademais, depende da execução adequada das demais fases da pesquisa.
Genethliacos de Décimo Magno Ausônio: traduções acadêmica e poética
Authors: Dos Santos Júnior Cristóvão José
Published: June 2021

Este trabalho se insere em nosso projeto de tradução da poesia ausoniana. Neste momento, apresentamos as primeiras traduções para a língua portuguesa da obra Genethliacos de Décimo Magno Ausônio (séc. IV d.C.), as quais foram efetuadas a partir da edição crítica estabelecida pelo filólogo latinista Roger Green (1991). Dedicada ao aniversário de seu neto, essa composição possui 28 versos supérstites, que são objeto de nossa dupla empreitada tradutória. Inicialmente, engendra-se tradução acadêmica que busca valorizar a sintaxe e os casos latinos, permitindo acesso mais fluido ao conteúdo temático do escrito de partida. Em seguida, realiza-se proposta de tradução poética, partindo-se do modelo de Carlos Alberto Nunes, analisado por João Angelo Oliva Neto (2016, 2014) e Everton Natividade (2013). Sublinhe-se que nossa tradução poética é a primeira que se tem notícia a emular os hexâmetros da obra Genethliacos.
Mulheres na cena esquiliana: por uma caracterização linguística
Authors: Redondo Jordi
Published: June 2021

Este trabalho examina os dispositivos linguísticos por meio dos quais Ésquilo conseguiu apresentar as personagens femininas da Oresteia. A análise é feita após um levantamento das seções recitativas de três tragédias; características fonéticas, morfológicas e sintáticas foram estudadas e comparadas com a linguagem dos personagens masculinos. Os resultados desta pesquisa se ajustam a outras tentativas precedentes de mostrar como a sociolinguística pode explicar o retrato formal dos personagens trágicos e cômicos.
Effectiveness of interactive dual-mode online platform for teaching and assessment of students during COVID 19 pandemic: Narrative experience and reflections of undergraduate medical students
Authors: Mahajan Rajiv , Gupta Kapil , Kaur Sandeep , Sidhu Tanvir Kaur , Kaur Upinder , Goyal Parmod Kumar , Bedi Sanjay
Published: June 2021

Objectives:

The objective of the study was to evaluate the perception of the undergraduate students about the online platform developed, through a long-term, qualitative study. COVID-19 enforced initial lockdown and later closing of educational institutes, including medical colleges in India. The circumstances lead to adoption of online means of teaching for teaching the medical undergraduate students. An interactive dual-mode online platform was introduced for teaching and assessment of undergraduate students in our institute also.

Materials and Methods:

Narrative experiences and reflections of students while attending online classes through the designed and delivered “interactive dual-mode online platform” were collected through open ended, anonymous Google forms.

Results:

Students were satisfied with the online learning as a stop-gap arrangement. Although they were facing technical snags and internet issues, they were happy that their syllabus was being covered and they were receiving formative assessment, in whatever quantity and mode possible. However, they were concerned about the lack of clinical training.

Conclusion:

To tide over crisis period, online teaching can be used, but one should shift to onsite teaching as soon as possible, particularly for medical students.
Study of retinal blood flow in pregnant women with diabetes mellitus
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Pomytkina N.V. , Sorokin E.L. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Far Eastern State Medical University, Khabarovsk, Russian Federation, Pashentsev Y.E. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation
Published: June 2021

Purpose. To investigate changes in retinal blood flow in pregnant women with diabetes mellitus (DM) using optical coherence tomography in angiography (OCTA) mode. Material and methods. 60 pregnant women were examined. The main group consisted of 24 women with DM type 1 and type 2. The control group was represented by 36 healthy women with physiological pregnancy. Women underwent OCTA on an Optovue RTVue XR Avanti device (Optovue Inc., USA) using the HD Angio Retina 6.0 mm scanning protocol. The total vascular density (TVD), foveal vascular density (FVD), and the area of the foveal avascular zone (AFAZ) in the superficial retinal plexus were studied. The survey was carried out in all trimesters of pregnancy in the main group, in the control group – in the third trimester. Results. When conducting a comparative analysis, no significant differences in the values of TDV and AFAZ were found between the main group and the control group. FVD values in pregnant women with diabetes were statistically significantly lower relative to the control group (p=0.001). There were no significant differences in FVD values in the subgroups of pregnant women with diabetic retinopathy (DR) and with diabetes and the absence of DR in the third trimester (p=0.114). However, AFAZ indices in patients with DR were significantly higher (p=0.039), and TDV – significantly lower in comparison with pregnant women with diabetes and no DR (p=0.035). Conclusions. 1. In pregnant women with diabetes in the third trimester, a statistically significant decrease in FPS in the superficial retinal plexus was revealed in comparison with healthy women with physiological pregnancy, in the absence of significant differences in TDV and AFAZ. 2. In pregnant women with DR in the third trimester, a statistically significant expansion of AFAZ with a decrease in TDV in the superficial plexus was revealed in comparison with pregnant women with DM and no DR. Key words: diabetes mellitus, diabetic retinopathy, optical coherence tomography in angiography mode, retinal blood flow.
Influence of surgical reconstruction of the internal carotid artery on the hemodynamics of the eye in patients with chronic ischemic neuropathy
Authors:   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation, Tuzlaev V.V. , Kolenko O.V. ,   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Egorov V.V. ,   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Kravchenko I.Z. ,   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation, Smoliakova G.P. ,   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Danilov O.V. , ,   The S.Fyоdorov Eye Microsurgery Federal State Institution, Khabarovsk, Russian Federation, Yarovaya A.V. ,   Federal Center Cardiovascular Surgery Federal State Budgetary Institution, Khabarovsk, Russian Federation
Published: June 2021

Purpose. To assess the effect of carotid endarterectomy (CE) on the hemodynamics of the eye, the neuroreceptor apparatus in patients with chronic ischemic neuroopticopathy (CIN) associated with hemodynamically significant atherosclerotic stenosis of the internal carotid artery (ICA). Material and methods. The study included 20 patients (20 eyes) with unilateral CIN. In all cases, Doppler ultrasound was used to assess the parameters of the linear blood flow velocity in patients after CE. Results. Surgical reconstruction of the ICA in all patients led to an improvement in blood flow in the vessels of the eye, in ⅔ of cases it stopped the process of neurodegeneration in the optic nerve (optic nerve) and contributed to an increase in the maximum corrected visual acuity at a follow-up of 1 year. Conclusion. Our studies indicate the advisability of performing ICA CE in patients with CIN associated with hemodynamically significant atherosclerotic ICA stenosis. The question of the use of pharmacological neuroprotection of the optic nerve in the postoperative period of CE remains relevant. Key words: chronic ischemic neuroopticopathy, ocular ischemic syndrome, internal carotid artery, carotid endarterectomy.
Analysis of effectiveness of angiogenesis inhibitor in treatment of choroidal neovascularization in patients with chronic central serous chorioretinopathy
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Zhaivoronok N.S. , Egorov V.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Smoliakova G.P. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Danilova L.P. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation, Povalyaeva D.A. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Emanova L.P. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Udovichenko E.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation
Published: June 2021

Purpose. To evaluate efficacy of angiogenesis inhibitor ranibizumab (Lucentis, Novartis, Switzerland) in treatment of choroidal neovascularization (CNV) in patients with chronic central serous chorioretinopathy (CSCR). Material and methods. The object of study was 11 patients (8 men and 3 women, 11 eyes) aged from 41 to 50 years with CNV on the background of chronic CSCR. All monitored patients underwent 3 consecutive “loading” intravitreal Lucentis injections is either 0.5 mg in 0.05 mL once a month. Results. After 3 months, all studied patients had complete obliteration of CNV. At the same time, the central retinal thickness was 224.5±13.3 µm, which did not differ significantly from norm (p<0.05). All 11 patients had stabilization of visual functions with average index of best corrected visual acuity of 0.9±0.13, exceeding the initial level by 0.15±0.04 (p<0.05), an increase in light sensitivity of central retinal zone was noted up to 22.41±1.2 dB. Conclusion. The data obtained allow us to state that timely use of angiogenesis inhibitor Lucentis in treatment of CNV in patients with the chronic CSCR is pathogenetically justified, effective and safe. Given frequency of recurrence, further studies of anti-VEGF therapy in treatment of chronic CSCR are needed to determine the need for repeated injections of anti-VEGF drugs. Key words: central serous chorioretinopathy, choroidal neovascularization, Lucentis.
Problems of localization of an intraocular impacted foreign body. Clinical case
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Kaluga Branch, Kaluga, Russian Federation, Tereshchenko A.V. , Yudina N.N. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Kaluga Branch, Kaluga, Russian Federation, Solovev D.K. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Kaluga Branch, Kaluga, Russian Federation
Published: June 2021

The article describes a clinical case of an eye injury with presence an intraocular foreign body (IFB), the localization of which was problematic. Patient T was 28 years old, was admitted with complaints of lack of vision, redness and lacrimation from the left eye. From the anamnesis – while working, he hit metal with a hammer, and the scale flew off into the left eye. In addition to the standard ophthalmologic examination, electrophysiological examination, B-scan and UBM were performed. According to the B-scan data, high optical density IFB was detected in the shells 9 mm from the upper border of the optic disc, in the 1-hour meridian, approximately 3.5 mm long. According to the X-ray data of the orbit in 2 projections, an X-ray contrast shadow, metal density, up to 3.0 mm in size was revealed. Radiography of Baltin–Comberg was not performed due to the lack of technical capability. During a standard three-port vitrectomy in the area of possible foreign body occurrence, the retina was damaged, there was a local detachment, but the foreign body itself was not visualized. In addition, during a thorough, detailed examination using a sclerocompressor, no visible defects of the sclera were found transvitreally. In the early postoperative period, the patient was performed with a computed tomogram, where the presence of a foreign body was confirmed, which was adjacent to the posterior wall of the eyeball for 1 hour with clear contours, measuring 3х3 mm. Taking into account the non-standard situation, the absence of a foreign body in the vitreous cavity, it was decided to re-search and remove the foreign body by using of the diascleral method. For a clearer contrast, diaphanoscopy was used, which made it possible to visualize and accurately localize a foreign body in the layers of the sclera. Conclusion. In the presence of IFB for search and precise localization, it is first of all necessary to perform the radiological Baltin-Comberg method. In cases when FB is not visualized intraoperatively, is impaled into the layers of the eye and the radiological Baltin-Comberg method has not been performed, diaphanoscopy of the eye is the optimal auxiliary method for searching for «hidden» foreign bodies. Key words: intraocular foreign body, radiological method of Baltin-Comberg, diaphanoscopy of the eye.
Assisted reproductive technologies and their impact on a woman's body
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Fil A.A. , Sorokin E.L. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Far Eastern State Medical University, Khabarovsk, Russian Federation, Kolenko O.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Postgraduate Institute for Public Health Workers, Khabarovsk, Russian Federation
Published: June 2021

A review of the literature data is presented, which indicates the possible influence of assisted reproductive technologies (ART) on the formation of both systemic and retinal vascular pathology. Despite the fact that the overall incidence of thromboembolic complications as a result of the use of ART is low, nevertheless, in women included in the in vitro fertilization program, their risk increases by 10 times. Therefore, due to the adverse effect of these drugs on the hemostatic system of a woman, ophthalmologists should be more wary of them in order to detect vascular retinal pathology in a timely manner. Key words: assisted reproductive technologies, in vitro fertilization, hyperestrogenism, vascular retinal pathology.
Frequency patients with hyperopia in refractive surgery department in ophthalmic surgery clinic
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Shishkin S.A. , Samokhvalov N.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Dutchin I.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Sorokin E.L. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation,   Far-Eastern State Medical University, Khabarovsk, Russian Federation
Published: June 2021

Purpose. Determination of proportion patients with hyperopia in refractive surgery department of ophthalmic surgery clinic, analysis of degree of their hyperopia, morphometric parameters of anterior segment of the eye. Material and methods. The proportion of patients with hyperopia who were operated in the refractive surgery department of the Khabarovsk branch of the S. Fyodorov Eye Microsurgery Federal State Institution in 2019 were assess. On limited sample of these patients, a quantitative assessment of degree of hyperopia was carried out, and morphometric parameters of the anterior segment of the eyes were studied. Results. In 2019, 141 patients with hyperopia were operated (282 operations), which amounted to 11.3% of the total number of patients in the department. The majority of patients had a moderate degree of hyperopia (55.3%). In 47.5% of eyes, hyperopia was combined with astigmatism up to 4 diopters. Conclusion. Femto LASIK technology made it possible to achieve maximum uncorrected visual acuity in 52% of patients with hyperopia in the study group. Modern capabilities of refractive surgery are capable of providing high functional results in patients with varying degrees of hyperopia. Key words:refractive errors, hyperopia, refractive surgery, Femto LASIK, age groups.
Clinical case of phakic intraocular lens rotation
Authors:   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Belonozhenko Y.V. , Semenova T.K. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Krivko S.V. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation, Lugovskoy A.E. ,   The S. Fyodorov Eye Microsurgery Federal State Institution, the Khabarovsk Branch, Khabarovsk, Russian Federation
Published: June 2021

Purpose. To analyze causes of the emerged postoperative rotation of the phakic intraocular lens (PIOL) of the IPCLT V2.0 model, to assess the effectiveness of its elimination and the outcomes. Clinical case. Patient A., 42 years old. Clinical diagnosis: High myopia, chorioretinal form, direct corneal astigmatism in both eyes. The combination of thin cornea with limbal vascularization did not allow to perform for him photorefractive surgery. The implantation of PIOL IPCLT V2.0 model was performed according to the method recommended by the manufacturer. On the first day after the operation, the position of the PIOL was correct in both eyes. Indicators of uncorrected visual acuity significantly increased from initial 0.01–0.02 to 0.4–0.5. The best corrected visual acuity also increased, amounting to 0.7–0.9 for the right/left eye, respectively. 1.5 months after the operation, the patient complained of a decrease and the appearance of instability in visual acuity in both eyes. Biomicroscopic examination revealed the PIOL rotation along the plane from a horizontal to a vertical position. Conclusion. At the stage of preoperative examination, special attention should be paid to the presence of circular symmetry of the zonule of Zinn attachment to the ciliary processes and to the lens capsule. Such indirect clinical signs as prolapse of the iris, asymmetry of the distances «ciliary processes – the edge of the lens» may indicate the presence of individual unfavorable anatomical features of the shape of the eye, which with high probability can lead to displacement or rotation of the PIOL IPCLT V2.0 model. Key words: myopia, phakic intraocular lens (PIOL), PIOL IPCLT V2.0 model.
Intraocular lenses optic power calculation with seven formulas in short eyes
Authors:   «Eximer» eye center, Moscow, Russian Federation, Pershin K.B. , Pashinova N.F. ,   «Eximer» eye center, Moscow, Russian Federation, Likh I.A. ,   «Eximer» eye center, Novosibirsk, Russian Federation, Tsygankov А.Y. ,   «Eximer» eye center, Novosibirsk, Russian Federation
Published: June 2021

Purpose. The choice of the optimal formula for calculating the IOL optical power in patients with an axial eye length of less than 20 mm. Material and methods. A total of 78 patients (118 eyes) were included in the prospective study. 1st group included 30 patients (52 eyes) with short eyes (average axial eye length of 19.60±0.42 (18.54–20.0) mm), 2nd group consisted of 48 patients (66 eyes) with a axial length 22.75±0.46 (22.0–23.77) mm. Various monofocal IOL models were used. The average follow-up period was 13 months. IOL optical power was calculated using the SRK/T formula, retrospective comparison – according to the formulas Hoffer-Q, Holladay II, Olsen, Haigis, Barrett Universal II and Kane. Results. In 1st group, the mean absolute error was determined for the formulas Haigis, Olsen, Barrett Universal II, Kane, SRK/T, Holladay II and Hoffer-Q (0.85, 0.78, 0.21, 0.17, 0.79, 0.73, 0.19 respectively). When comparing the formulas, significant differences were found for the formulas Hoffer-Q, Barrett Universal II and Kane in comparison with the formulas Haigis, Olsen, SRK/T and Holladay II (p<0.05) in all cases, respectively. In 2nd group, the mean absolute error was determined for the formulas Haigis, Olsen, Barrett Universal II, Kane, SRK/T, Holladay II and Hoffer-Q (0.15, 0.16, 0.23, 0.10, 0.19, 0.23, 0,29 respectively). In 2nd group, there were no significant differences between the studied formulas (p>0.05). Conclusion. This paper presents an analysis of data on the effectiveness of seven formulas for calculating the IOL optical power in short (less than 20 mm) eyes in comparison with the normal axial length. The advantage of the Hoffer-Q, Barrett Universal II and Kane formulas over Haigis, Holladay II, Olsen, and SRK/T is shown. Key words: cataract, hypermetropia, short eyes, calculation of the IOL optical power.