bluuebunny/crossref_metadata_2025 huggingface dataset:
Electrolytic accelerated corrosion morphology for structural steel based on an improved solution
Authors: Si Qi , Ding Yang , Zong Liang
Published: June 2021

Atmospheric corrosion degrades the mechanical properties of steel structures mainly because of stress concentrations caused by an uneven corrosion topography. Electrolytic corrosion is regarded as one of the most efficient indoor accelerated corrosion approaches, while, the uneven atmospheric corrosion topography usually cannot be well simulated by electrolytic corrosion. This study aims to introduce an electrolytic corrosion solution suitable for simulating atmospheric corrosion. The surface morphologies of the structural steel specimens after electrolytic corrosion in three different solutions under various electrification time and magnitude of the current were compared. The surface characteristics of the corroded steel plates were measured by a 3D noncontact surface topography scanner, and analyzed based on surface roughness theory and fractal theory. The results showed that the mixed solution of 0.5% CH3COONa and 0.2% NaCl will produce pitting corrosion on the steel surface, and the surface morphologies of the steel specimens after electrolytic corrosion were consistent with that of neutral salt spray accelerated corrosion test. It is verified that the electrolytic accelerated corrosion in such a solution can simulate actual atmospheric corrosion reasonably.
The relationship between university EFL teachers’ oral feedback beliefs and practices and the impact of individual differences
Authors: Yuksel Dogan , Soruç Adem , McKinley Jim
Published: June 2021

This study investigated Turkish EFL teachers’ beliefs and practices about the aspects of oral corrective feedback (OCF). It explored the impact of individual differences, namely educational background, special training, and teaching experience, on the relationship between the beliefs and practices. Data on teachers’ practices were collected via 153 h of classroom observations from 51 Turkish EFL teachers at two different universities, and teachers’ beliefs were gathered by a task about OCF. The results showed that teachers’ beliefs and practices were consistent on the aspects of perceived effectiveness, grammatical errors, implicit and explicit feedback. However, their beliefs and practices were inconsistent regarding lexical, phonological errors, and timing of OCF. The results also revealed that of the three individual differences, teaching experience most impacted the consistency between beliefs and practices, thus showing the greater role of teaching experience over special training and educational background on the consistency between beliefs and practices about OCF.
Significance of miR-141 and miR-340 in cervical squamous cell carcinoma
Authors: Li Wenting , Yang Bo , Li Yiqun , Wang Cuicui , Fang Xinzhi
Published: June 2021

Background

We investigated the expression and clinical significance of miR-141 and miR-340 in cervical squamous cell carcinoma (CSCC).

Methods

Expression of miR-141 and miR-340 in CSCC, high-grade squamous intraepithelial lesion (HSIL), and normal cervical squamous epithelium were detected by qRT-PCR. PTEN was assessed by immunohistochemistry. Their relationship with clinicopathological features was analyzed.

Results

The changes of miR-141 and miR-340 were different in CSCC, HSIL, and normal squamous epithelium (P = 0.030). miR-141 expression was statistically significant in gross type, differentiation, uterine corpus invasion, nerve invasion, vagina invasion, and FIGO stage in CSCC (P < 0.05). miR-340 expression was related to tumor size, differentiation, nerve invasion, lymph node metastasis, and FIGO stage in CSCC (P < 0.05). miR-141 and miR-340 expressions were statistically significant in different ages (P < 0.05) in HSIL. The AUC of miR-141 in CSCC diagnosis and that of miR-340 in HSIL diagnosis were 0.893 and 0.764, respectively. The sensitivity and the specificity of miR-141 for diagnosis of CSCC were 95.0% and 60.8%, respectively, while those of miR-340 for diagnosis of HSIL were 90.0 and 48.6%, respectively. miR-141 and miR-340 expressions are associated with PTEN expression (P = 0.002 and P < 0.001).

Conclusion

miR-141 and miR-340 may be associated with their target gene PTEN and involved in the carcinogenesis of cervical squamous epithelium.
Some degree-based topological indices of caboxy-terminated dendritic macromolecule
Authors: Rao Yongsheng , Kanwal Ammarah , Abbas Riffat , Noureen Saima , Fahad Asfand , Qureshi Muhammad Imran
Published: June 2021

In the modern era of the chemical science, the chemical graph theory has contributed significantly to exploring the properties of the chemical compounds. Currently, the computation of the topological indices is one of the most active directions of the research in the area of the chemical graph theory. The main feature of the study of the topological indices is its its ability of predicting the various physio-chemical properties. In this article, we compute several degree-based topological indices for the caboxy-terminated dendritic macromolecule. We compute Harmonic index, atom-bond connectivity index, geometric arithmetic index, sum connectivity index, inverse sum index, symmetric division degree, and Zagreb indices for caboxy-terminated dendritic macromolecule. The obtained results have potential to predict biochemical properties such as viscosity, entropy, and boiling point.
Role of heteroatoms and substituents on the structure, reactivity, aromaticity, and absorption spectra of pyrene: a density functional theory study
Authors: Saha Bapan , Bhattacharyya Pradip Kumar
Published: June 2021

Effect of heteroatoms viz. BN and substituents viz. –Me (methyl), –OH (hydroxyl), –NH2 (amine), –COOH (carboxyl), and –CN (cyano) on the structural parameters, global reactivity, aromaticity, and UV-visible spectra of pyrene are studied with the help of density functional theory (DFT). Global reactivity parameters such as global hardness (η) and electrophilicity (ω) are calculated using density functional reactivity theory (DFRT). Time dependent density functional theory (TD-DFT) is explored for interpreting the UV-visible absorption spectra. Aromaticity of the pyrene rings are predicted from the nucleus independent chemical shift (NICS) values. Presence of BN unit and substituent induces reasonable impact on the studied parameters. The observed absorption spectra lie predominantly within the UV-region (both blue and red shifts are observed in presence of BN and substituent). HOMO energy and absorption spectra are affected nominally in solvent phase.
Development of reverse phase-high performance liquid chromatography (RP-HPLC) method for determination of selected antihypertensive active flavonoids (rutin, myricetin, quercetin, and kaempferol) in medicinal plants found in Botswana
Authors: Binang Katso , Takuwa David T.
Published: June 2021

The aim of the study was to develop a rapid, efficient, and cheap chromatographic method for determining four selected antihypertensive active flavonoid compounds in medicinal plants in Botswana. The determination of rutin, quercetin, and kaempferol in selected medicinal plants was conducted in less than 6 min using the developed reverse phase-high performance liquid chromatography (RP-HPLC) method with a 2.7 µm Ascentis C18 express column (150 × 4.60 mm i.d) at 340, 360, and 368 nm detection wavelengths and mobile phase of methanol and 0.068% of formic acid solution in isocratic elution. Validation results showed good selectivity, linearity (r
2 > 0.99), high percentage recoveries (90.2–104.7%), and precision (% RSD < 2) for n = 3, confirming suitability of the method for determination of the investigated flavonoids in Zingiber officinale (ginger). Application of the developed RP-HPLC method was performed in selected medicinal plants (Lippia javanica
) (mosukujane), Myrothanmus flabellious (galalatshwene), and Elephantorrhiza elephantina (mositsana) used to manage hypertension by herbalists in Botswana. M. flabellious a very commonly used plant for managing hypertension was found to contain highest amounts of rutin and myricetin, whereas nothing was detected for E. elephantina.
Acute Mechanical, Neuromuscular, and Metabolic Responses to Different Set Configurations in Resistance Training
Authors: Piqueras-Sanchiz Francisco , Cornejo-Daza Pedro J. , Sánchez-Valdepeñas Juan , Bachero-Mena Beatriz , Sánchez-Moreno Miguel , Martín-Rodríguez Saúl , García-García Óscar , Pareja-Blanco Fernando
Published: June 2021

Piqueras-Sanchiz, F, Cornejo-Daza, PJ, Sánchez-Valdepeñas, J, Bachero-Mena, B, Sánchez-Moreno, M, Martín-Rodríguez, S, García-García, Ó, and Pareja-Blanco, F. Acute mechanical, neuromuscular, and metabolic responses to different set configurations in resistance training. J Strength Cond Res 36(11): 2983–2991, 2022—The aim of this study was to investigate the effect of set configuration on mechanical performance, neuromuscular activity, metabolic response, and muscle contractile properties. Sixteen strength-trained men performed 2 training sessions in the squat exercise consisting of (a) 3 sets of 8 repetitions with 5 minutes rest between sets (3 × 8) and (b) 6 sets of 4 repetitions with 2 minutes rest between sets (6 × 4). Training intensity (75% one repetition maximum), total volume (24 repetitions), total rest (10 minutes), and training density were equalized between protocols. A battery of tests was performed before and after each protocol: (a) tensiomyography (TMG), (b) blood lactate and ammonia concentration, (c) countermovement jump, and (d) maximal voluntary isometric contraction in the squat exercise. Force, velocity, and power output values, along with electromyography data, were recorded for every repetition throughout each protocol. The 6 × 4 protocol resulted in greater mechanical performance (i.e., force, velocity, and power) and lower neuromuscular markers of fatigue (i.e., lower root mean square and higher median frequency) during the exercise compared with 3 × 8, particularly for the last repetitions of each set. The 3 × 8 protocol induced greater lactate and ammonia concentrations, greater reductions in jump height, and greater impairments in TMG-derived velocity of deformation after exercise than 6 × 4. Therefore, implementing lower-repetition sets with shorter and more frequent interset rest intervals attenuates impairments in mechanical performance, especially in the final repetitions of each set. These effects may be mediated by lower neuromuscular alterations, reduced metabolic stress, and better maintained muscle contractile properties.
The Effect of Kangaroo Mother Care Intervention on the Newborns Health Outcome Delivers at Sulaymaniyah Maternity Teaching Hospital
Authors:   Department of Nursing, College of Nursing, University of Sulaimani, Sulaimani, Iraq., Azeez Awat , Azize Pary ,   Department of Nursing, Sulaimani Technical Institute Sulaimani Polytechnic University Sulaimani, Iraq.
Published: June 2021

Background and Objectives: Kangaroo mother care is an intervention for all newborns but especially for premature and low birth weight infants. The method involves babies being carried, usually by the mother, with skin-to-skin contact. It is the most achievable way for decreasing neonatal morbidity and mortality and is practical, inexpensive especially for developing countries. This study intended to assess the effect of kangaroo mother care on the newborns’ health outcome at Sulaymaniyah Maternity Teaching Hospital in Sulaymani-yah, Kurdistan Region, Iraq. Methods: A quasi-experimental, pre-post intervention study was conducted in the Neona-tal Intensive Care Unit and Baby Friend Unit of the hospital. One hundred newborn-mother pairs participated in the Kangaroo mother care procedure. The newborns were physiologically monitored before, in the middle and after the procedure. Result: The highest mean of newborn temperature was 37 ̊C after Kangaroo mother care in the visit three and the lowest mean temperature was 36.1 ̊C before Kangaroo mother care. There were statistically significant differences between the before, middle and after-procedure measurements in temperature, heart rate and respiratory rate (p-value <0.05) on all three visits, while there was no significant difference between the means of the oxy-gen saturation at all three visits (p-value was more than the standard alpha 0.05 F-test=0.961). There was a highly significant association between oxygen saturation and newborn birth weight and gestational age. Individual vital signs abnormalities were often corrected during the Kangaroo mother care sessions. Newborns involved in the procedure showed steady and statistically significant improvement in vital physiological parameters during three sessions on all three days. Conclusion: Majority of babies who received Kangaroo mother care showed significant im-provement in vital physiological parameters on all three days without using special equip-ment showing that this strategy can offer improved care to newborn infants. These find-ings support wider implementation of this strategy.
Regulation of Neural Circuit Development by Cadherin-11 Provides Implications for Autism
Authors: Frei Jeannine A. , Niescier Robert F. , Bridi Morgan S. , Durens Madel , Nestor Jonathan E. , Kilander Michaela B. C. , Yuan Xiaobing , Dykxhoorn Derek M. , Nestor Michael W. , Huang Shiyong , Blatt Gene J. , Lin Yu-Chih
Published: June 2021

Autism spectrum disorder (ASD) is a neurologic condition characterized by alterations in social interaction and communication, and restricted and/or repetitive behaviors. The classical Type II cadherins cadherin-8 (Cdh8, CDH8) and cadherin-11 (Cdh11, CDH11) have been implicated as autism risk gene candidates. To explore the role of cadherins in the etiology of autism, we investigated their expression patterns during mouse brain development and in autism-specific human tissue. In mice, expression of cadherin-8 and cadherin-11 was developmentally regulated and enriched in the cortex, hippocampus, and thalamus/striatum during the peak of dendrite formation and synaptogenesis. Both cadherins were expressed in synaptic compartments but only cadherin-8 associated with the excitatory synaptic marker neuroligin-1. Induced pluripotent stem cell (iPSC)-derived cortical neural precursor cells (NPCs) and cortical organoids generated from individuals with autism showed upregulated CDH8 expression levels, but downregulated CDH11. We usedCdh11knock-out (KO) mice of both sexes to analyze the function of cadherin-11, which could help explain phenotypes observed in autism.Cdh11−/−hippocampal neurons exhibited increased dendritic complexity along with altered neuronal and synaptic activity. Similar to the expression profiles in human tissue, levels of cadherin-8 were significantly elevated inCdh11KO brains. Additionally, excitatory synaptic markers neuroligin-1 and postsynaptic density (PSD)-95 were both increased. Together, these results strongly suggest that cadherin-11 is involved in regulating the development of neuronal circuitry and that alterations in the expression levels of cadherin-11 may contribute to the etiology of autism.
Intercellular Adhesion Molecule-1-Induced Posttraumatic Brain Injury Neuropathology in the Prefrontal Cortex and Hippocampus Leads to Sensorimotor Function Deficits and Psychological Stress
Authors: Bhowmick Saurav , Malat Anitha , Caruso Danielle , Ponery Nizmi , D’Mello Veera , Finn Christina , Abdul-Muneer P. M.
Published: June 2021

Intercellular adhesion molecule-1 (ICAM-1) promotes adhesion and transmigration of circulating leukocytes across the blood-brain barrier (BBB). Traumatic brain injury (TBI) causes transmigrated immunocompetent cells to release mediators [function-associated antigen (LFA)-1 and macrophage-1 antigen (Mac-1)] that stimulate glial and endothelial cells to express ICAM-1 and release cytokines, sustaining neuroinflammation and neurodegeneration. Although a strong correlation exists between TBI-mediated inflammation and impairment in functional outcome following brain trauma, the role of ICAM-1 in impairing functional outcome by inducing neuroinflammation and neurodegeneration after TBI remains inconclusive. The experimental TBI was inducedin vivoby fluid percussion injury (FPI; 10 and 20 psi) in wild-type (WT) andICAM-1−/−mice andin vitroby stretch injury (3 psi) in brain endothelial cells. We manipulate ICAM-1 pharmacologically and genetically and conducted several biochemical analyses to gain insight into the mechanisms underlying ICAM-1-mediated neuroinflammation and performed rotarod, grid-walk, sucrose preference, and light-dark tests to assess functional outcome. TBI-induced ICAM-1-mediated neuroinflammation and cell death occur via LFA-1 or Mac-1 signaling pathways that rely on oxidative stress, matrix metalloproteinase (MMP), and vascular endothelial growth factor (VEGF) pathways. The deletion or blocking of ICAM-1 resulted in a better outcome in attenuating neuroinflammation and cell death as marked by the markers such as NF-kB, IL-1β, TNF-α, cleaved-caspase-3 (cl-caspase-3), Annexin V, and by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), and Trypan blue staining. ICAM-1 deletion in TBI improves sensorimotor, depression, and anxiety-like behavior with significant upregulation of norepinephrine (NE), dopamine (DA) D1 receptor (DAD1R), serotonin (5-HT)1AR, and neuropeptide Y (NPY). This study could establish the significance of ICAM-1 as a novel therapeutic target against the pathophysiology to establish functional recovery after TBI.
Investment Screening before, during, and after COVID-19
Authors: Gertz Geoffrey
Published: June 2021

In the wake of the COVID-19 pandemic, several states introduced and expanded regulatory frameworks for screening (and potentially blocking) inward foreign direct investment. This shift accelerated a preexisting trend in the global political economy, as states have been widening their understanding of “national security” risks arising from foreign investment. The result is that such screening mechanisms are evolving from a niche subject to a broader regulatory tool that touches an expanding share of global economic activity. The tensions inherent in this shift—including how firms will respond, how states can evaluate systemic (rather than transactional) risk, and the potential and limits of international cooperation in investment screening—have not yet been resolved.
De la ley divina a la ley humana: Alfonso de Castro (1495-1558) y el Nuevo Mundo
Authors: Murillo Gallegos Verónica
Published: June 2021

Alfonso de Castro en su obra De potestate legis poenalis (1550) define la ley como producto de la voluntad y señala que su interés es la ley humana; sin embargo, en su teoría, la ley divina tiene un papel fundamental. En este trabajo describiremos la equivalencia que Castro establece entre la ley natural y la ley divina para analizar cómo deriva la ley humana de ellas. El objetivo es mostrar las implicaciones del concepto de ley como precepto de la voluntad en las polémicas surgidas en torno al descubrimiento y dominio del Nuevo Mundo, particularmente entre los misioneros franciscanos en Nueva España.
Moral and Intellectual Virtues: On the Relation between Detached Contemplation and Political Prudence
Authors: Vega Castro Diego Enrique
Published: June 2021

The classical Aristotelean distinction between moral and intellectual virtues has come to us as one of the first explicit conceptualizations of a realm of knowledge and a realm of action. This paper intends to analyze the meaning of that distinction according to an alternative hypothesis, namely, that the moral and intellectual virtues correspond to a profound understanding of the relation between the philosophical and the political life. The analysis will be guided by the relatively unclear relation between phrónesis and sophía, and by the subtle but remarkable differences that Thomas Aquinas introduces in his systematization of virtues, e.g., his explicit flight from this life as the goal of contemplation. Aquinas’ understanding of theoría or contemplation will shed light on the basis of Aristotle’s concern with virtues—the tension between philosophy and politics that must be mediated by a resourceful prudence.
Abordajes de la violencia y la seguridad pública, hacia un enfoque ético-relacional basado en el cuidado
Authors: Carmona Gallego Diego , Perlo Claudia Liliana
Published: June 2021

El propósito de este trabajo es brindar una perspectiva teórica en torno a la prevención de la violencia y la seguridad, problema relevante en nuestra sociedad actual, que posibilite repensar e incidir en las políticas públicas vigentes. Los desarrollos teóricos aquí presentados son emergentes de nuestro trabajo de campo. Se trata de estudios cualitativos de corte etnográfico, en diversos territorios sociocomunitarios en la ciudad de Rosario, Santa Fe, Argentina. Los mismos se llevaron a cabo entre los años 2014-2019 y giraron en torno a los problemas de prevención de la violencia, seguridad, políticas y prácticas de cuidado. En tales estudios advertimos tres abordajes de la seguridad desde la política pública. Los mismos soportan diferentes sustentos ontoepistemológicos que analizaremos en este artículo. Los hemos reunido en tres categorías: abordaje represivo-punitivo, centrado en el control y la prevención del delito; abordaje de la restitución de los derechos, basado en garantizar la igualdad socioeconómica y cultural y el abordaje ético-relacional  propuesto en este trabajo que busca dar un giro a este crónico problema, apostando a la reparación de los vínculos a través del cuidado de sí y el cuidado del otro. En este trabajo abordaremos la inseguridad como modo relacional constitutivo de las sociedades modernas. Profundizaremos en la concepción de cuidado, y la pondremos en relación y en tensión con el concepto de seguridad. Finalmente, presentamos apreciaciones finales que dan cuenta de nuestros hallazgos de investigación, conducentes a replantear las políticas públicas sobre la cuestión.
Assessing the creep performance of full-scale bamboo scrimber columns
Authors: Liu Yan , Jia Wenbo , Su Xiangyu , Ma Hongwei , Xiao Zhongping
Published: June 2021

Bamboo scrimber is a kind of artificial processing material with high compressive strength, large size, natural texture, and wide application. It is made by rolling and de-fibering bamboo into a loose reticulate bundle, which is unbroken transversely, and loosely interlaced in the longitudinal direction, followed by drying, gluing, assembling, and hot pressing. In this study, to better understand the application value of bamboo scrimber in construction engineering, the performance of axially compressed solid columns that have been completed with three full-scale solid bamboo scrimber columns of 100 mm width, 100 mm height, and 2000 mm length were subjected to creep tests for 3 months. The specimens J1, J2, and J3 were designed to carry the long-term load of 0.2, 0.4, and 0.6 times the short-term test failure load of the same batch of specimens, respectively. The experimental study found that the bamboo scrimber columns could not bear 0.6 times of the short-term test failure load Pu, and that temperature and humidity greatly influenced creep of the specimens. Finally, a creep constitutive equation was established using a three-parameter model, and the equation matched well with the creep test data.
Lesiones medulares catastróficas en el rugby argentino. Impacto de las medidas implementadas y su reducción relativa en el tiempo
Authors: Carpani Federico , Salvat Fernando , Saco Marcelo , Farcy Nicole , Zamorano Carolina , Bruno Verónica , Farez Mauricio Franco , Nogués Martín
Published: June 2021

Introducción: Se entiende por lesión catastrófica a cualquier trauma grave que comprometa la cabeza, el cerebro, la columna vertebral o la médula espinal, que pone en riesgo la vida o puede dejar una discapacidad permanente o semipermanente. En la Argentina, la incidencia de lesionados en el ámbito del rugby es alta comparada con la de otros países. En los últimos años, se han implementado múltiples medidas de prevención y se han modificado normas con el objetivo de evitar las lesiones catastróficas.

Materiales y Métodos: Se analizaron datos obtenidos de una encuesta telefónica realizada en el marco de colaboración entre la Unión Argentina de Rugby y la Fundación para la Lucha de Enfermedades Neurológicas de la Infancia (Fleni). Se realizó un análisis descriptivo de los datos. Se recopilaron los cambios en las normativas del deporte, que pudieran tener impacto en las futuras lesiones.

Resultados: Se observa que el número de lesiones se mantiene estable año tras año. Al asociar este dato con un aumento sostenido de la cantidad de jugadores por año, impresiona haber una disminución relativa del riesgo de lesionarse.

Conclusiones: Las lesiones catastróficas generan un gran impacto en la calidad de vida del jugador y de su entorno. Deben considerarse inadmisibles y se deben incrementar los esfuerzos para lograr eliminar los riesgos de lesionarse. El esfuerzo de las entidades reguladoras impresiona tener un impacto positivo al haberse logrado una reducción relativa de las lesiones en relación con el aumento de jugadores año tras año.
Social activity and learning de-encapsulation under a multimodal approach in English Language Teaching
Authors: Santos Carolina Favaretto , Ortenzi Denise Ismenia Bossa Grassano
Published: June 2021

In order to attempt to bring language learning practices closer to students’ daily lives, studies regarding Social Activity (Liberali, 2009), under the Social Historical Activity Theory (Engestrom, 1999) have been gaining space in current research (Larré, 2018; Silva, 2017; Zanella, 2017). Accordingly, as an emerging necessity from the context here described and from our society in general, environmental education became necessary, along with interdisciplinary practices, as stated in Brazil’s official curriculum guidelines. In addition, in the 21st century, with the advances of Information and Communication Technologies (ICT), the Pedagogy of Multiliteracies (Cope & Kalantzis, 2001) has become even more relevant in education, being it due to communication, social media, video, and images, for example. In light of this, the objective of this research paper is to analyze the outcome of an environmentally focused pedagogical intervention under a multimodal approach, developed during an internship program in a state school. After being in contact with planetary awareness in English language lessons, students customized ecobags alongside the Arts teacher, in an interdisciplinary way. Students’ productions were analyzed taking into account their multimodal choices when making meaning out of different semiotic modes, and to what extent learning de-encapsulation happened in this process. Results indicate that students were able to achieve synesthesia in their multimodal productions, combining linguistic, visual, spatial and gestural modes. Furthermore, learning de-encapsulation occurred as students made use of the environmental knowledge they acquired in English classes, not only by crossing boundaries inside the school, but also outside its walls.
Telecollaborative practice in Brazil
Authors: Rampazzo Laura , Cunha Jéssica Nunes Caldeira
Published: June 2021

Telecollaboration refers to connecting geographically distant learners in intercultural contact via (a)synchronous communication tools. “Teletandem Brasil: Foreign Languages for All” (Telles, 2006) is a telecollaborative, pedagogical, and research project that has been the object of investigation of studies published under the formats of research articles, master’s theses, Ph.D. dissertations, books, and book chapters. This paper aims to present a descriptive map of peer-reviewed research articles on teletandem practice in Brazil. We selected articles that reported on empirical research from the Web of Science platform and the teletandembrasil.org website and, based on the EPPI reviewing system, analyzed 67 articles. We identified the following aspects of the articles: period of publication, language, research focus, and data analyzed. Our results indicate that (i) there has been a growing interest in the topic reflected in more published papers on teletandem; (ii) most articles are published in Portuguese and English; (iii) research on teletandem has focused on 11 different topics, the most popular ones being language learning and intercultural issues; and (iv) there is a diversity of data analyzed in the publications.
Social Values of Students in Conditions of Digitalization of Education and COVID-19
Authors: Rezer Tatiana M.
Published: June 2021

Introduction. During the COVID-19 pandemic variety of digital tools and technologies were demonstrated owing to the global digitalization of education and the total transition to online learning. The purpose of present research is to determine factors of digitalization of education and their effect on transformation of social values among high school students in conditions of the COVID-19. The results of research on social values of students were considered using comparative analysis. It was revealed that the paradigm of values among young people changed from an individual-personal one at the beginning of the XXI century to the social oriented paradigm – tolerance, openness, public recognition through social networks, self-development and contribution to the community.
Materials and Methods. The analysis of pedagogical experience in the field of digitalization of education allowed to formulate the main factors of global digitalization of education and to highlight positive and negative aspects of online learning. According to M. Rokich’s method, an empirical study of instrumental values transformations was carried out among 137 students of Ural Federal University in the conditions of full-time online learning. A questionnaire method was implemented to determine studentsʼ attitude to online learning during COVID-19 pandemic and possibility for further development of this form of learning.
Results. It was revealed that only 13.7% of respondents did not notice any decrease in the quality of learning and did not experience discomfort in obtaining knowledge in online form. According to the studentsʼ opinion the values that are subjected to transformation are the following: efficiency, self-control, responsibility, honesty. It can be concluded that the era of network personality and new scientific knowledge in pedagogy has begun. Online learning is a fait accompli which requires scientific substantiation of a new didactics and social values system development among students in a digital education environment.
Discussion and Conclusion. Achieved results contribute to ecological system of new digital services that change life and educational activities of a human, as well as transform his personality and values system. Thus, for the purpose of health and emotional intelligence preservation in students the continuation of interdisciplinary study of various aspects of education digitalization is required.
The Social Competences of High School Students from a Contextual Approach
Authors: Tsvetkova Irina V. , Ivanova Tatiana N.
Published: June 2021

Introduction. The formation of social competences of schoolchildren is an important area of modern science and pedagogical practice. Despite the large number of publications on this issue, there is virtually no research on the analysis of social context, which largely determines the practical implementation of social competences. The aim of this article is to analyse the high schoolʼs activities on social competence development using a contextual approach. The novelty of the approach lies in the identification of social competencies that characterize the effectiveness of the educational impact of the high school, taking into account the subjective context.
Materials and Methods. The empirical base of the study includes data collected from sociological surveys conducted in Togliatti schools in 2010, 2014 and 2019 in the monitoring mode (in 2010, n = 1 183, in 2014, n = 945, in 2016, n = 1 745; in 2019, n = 976). The collection of data in the monitoring mode made it possible to identify the dynamics of results over a ten-year period and to determine how well the high school is doing in terms of developing social competences.
Results. Among the social competencies that the high school forms, high school students note the ability to work with information, understand people, determine the propensity for science, independence, as well as a tolerant attitude to representatives of other cultures. There are contradictions in the formation of social competencies, and this is especially evident in the assessment of civic qualities. Over the past decade, the number of students who believe that school has prepared them for life has significantly decreased.
Discussion and Conclusion. The results contribute to the development of scientific concepts of social competences. The materials of the article will be useful for the study of problems and contradictions of value self-determination of the younger generation. The practical significance of applying the proposed contextual approach is to increase the effectiveness of the school in the formation of studentsʼ social qualities necessary for life in modern society.
A Forecast Model of the Complex Negative Impact of Agricultural Production Technologies on Water Bodies
Authors: Subbotin Igor A. , Vasilev Eduard V.
Published: June 2021

Introduction. The purpose of research is to develop a mathematical model for assessing and forecasting the complex negative impacts of agricultural technologies on water bodies. This problem is relevant because of the need to enlarge agricultural enterprises. The created model for forecasting is necessary to make an objective assessment, taking into account the complex effect of machine technologies applied to agricultural production and all biogenic elements that have a negative impact on water bodies.
Materials and Methods. There was used the Spesivtsev – Drozdov method of logical-linguistic modeling, which allows giving expert knowledge a form mathematical model. Four experts were interviewed, and the obtained data became a subject of the regression analysis. The adequacy of the model was confirmed using the coefficient of determination and Fisher’s test.
Results. A hierarchical system of 6 factors and 14 sub-factors was formed, including both the applied machine technologies and the management decisions on the matter. There was created a model containing a polynomial equation reflecting the influence of factors on the level of negative impact of technologies and equations that determine the influence of sub-factors on factors.
Discussion and Conclusion. The created model can be used for practical purposes to support making decisions for planning, forecasting and selecting scenarios to modernize agricultural enterprises. The model equations make it possible to understand the significance of factors and sub-factors affecting the level of negative impact (diffuse load) on water bodies. This allows us to choose more effective ways to reduce the negative impact by choosing the most significant factors and/or sub-factors as objects of management.
O vazio e a “comunidade que vem”: reflexões político-teológicas desde a pandemia da COVID-19
Authors: Souza Daniel Santos
Published: June 2021

Esse artigo tem a comunidade no contexto da pandemia da COVID-19 como um conceito organizador. Com os cenários de isolamento social, as perguntas pelo “viver junto” e o “viver só” tornam-se latentes. Para ensaiar possibilidades prático-teóricas para o problema do viver comum, organizei esse artigo a partir das seguintes temáticas: i) a aproximação entre a comunidade e o imaginário da trindade, com novas possibilidades de leitura a partir das noções de “makom” e de “pericórese”; ii) a reflexão sobre a “comunidade que vem” e as propostas de dessubjetivação e esvaziamento de uma noção ideal e colonial de humanidade; e iii) as leituras teológicas sobre a graça e as “brechas” possíveis para a constituição de arranjos éticos comuns. O movimento do texto, portanto, nos coloca diante do dilema da vida na pandemia e, nesse cenário de insegurança, ensaia estratégias imaginativas que assumem o vazio (de Deus e do humano) para nos arriscarmos em uma (im)possibilidade da vida em relação.
O Desenvolvimento Mediúnico na Umbanda: uma compreensão junguiana
Authors: Kaitel Alexandre Frank Silva , Silveira Luiz Henrique Lemos
Published: June 2021

Realizamos uma pesquisa empírica para compreender as transformações subjetivas decorrentes do processo de desenvolvimento mediúnico na Umbanda. A coleta de dados ocorreu em quatro terreiros da cidade de Belo Horizonte através de vinte entrevistas semi-estruturadas e observação participante de noventa rituais. Foram entrevistados doze médiuns desenvolventes e oito sacerdotes. Os resultados foram compreendidos através da teoria junguiana e da lógica interna oferecida pelos participantes. Encontramos majoritariamente coincidências entre as postulações de Jung e de nossos sujeitos de pesquisa sobre o desenvolvimento da mediunidade. Encontramos também uma divergência, que nos levou a propor uma releitura de um aspecto da teoria do autor, embasada na compreensão umbandista do fenômeno.
Perceptions of adults with obesity about multiprofessional remote monitoring at the beginning of the COVID-19 pandemic
Authors: Christinelli Heloá Costa Borim , Spigolon Dandara Novakowski , Teston Élen Ferraz , Costa Maria Antonia Ramos , Westphal Greice , Nardo Junior Nelson , Fernandes Carlos Alexandre Molena
Published: June 2021

ABSTRACT Objective: To understand the perception of adults with obesity about remote monitoring at the beginning of the pandemic of COVID-19. Methods: A descriptive-exploratory, qualitative study with participants in remote monitoring of a multi-professional treatment program in southern Brazil. Data was collected through digital platforms with interviews in written or audio-recorded records. The results were submitted to content analysis, thematic modality. Results: 26 women participated, emerging the thematic category "Difficulties and potentialities in adherence to lifestyle changes during the pandemic. Among the difficulties are the change of routine and increased anxiety; and, among the potentialities are the multi-professional accompaniment, decreased tension, and weight control. Final considerations: The participants' perception showed considerable weaknesses in adhering to the program, caused by social distance. Studies with remote interventions are essential to improve the quality of this type of health care.
Executive functions and emotion regulation in substance use disorder
Authors: Formiga Mariana Bandeira , Galdino Melyssa Kellyane Cavalcanti , Vasconcelos Selene Cordeiro , Neves Jayston W. J. Soares , Lima Murilo Duarte da Costa
Published: June 2021

ABSTRACT Objective The executive functions (EF) and emotion regulation (ER) and their relationship with the substance use disorder (SUD) were analyzed. Methods A cross-sectional design was used. The sample consisted of 130 volunteers divided into three groups: group 01 (n = 60), composed of participants who did not meet the diagnostic criteria for any type of SUD; group 02 (n = 51), with users with alcohol and/or tobacco use disorder; group 03 (n = 19), with users with multiple substance use disorder, including at least one illicit substance. Results Group 02 presented worse performance in EF and ER when compared to group 01, and showed a significant correlation between the working memory and the use of maladaptive ER. Group 03 showed great losses in EF and ER when compared to the other groups. Conclusion This study supports the idea that EF, ER and SUD are related. In addition, it was observed that people with SUD had worse performance in EF and ER when compared to people without SUD, greater damage being observed in people with SUD of polysubstances.
Student’s confidence in mental health practice before and after psychiatry rotation: a follow up study
Authors: Rocha Neto Helio G. da , Lamberte Clara R. de A. , Miranda Bianca Baptistella de , Cavalcanti Maria Tavares , Correia Diogo Telles
Published: June 2021

ABSTRACT Objectives The primary objective was to measure the effect of psychiatry rotation in students self-confidence (SC) for managing mental health (MH) issues. Methods An eighteen questions version of “Preparation for Hospital Practice Questionnaire” (PHPQ) adapted for MH was applied before, after and six months later the psychiatry rotation. Sociodemographic and experience with mental illness was measured as confounding factors. Results Hundred and ten students were recruited and four factors were identified: “Diagnosis elaboration and basic care” (F1), “Crisis management and prevention” (F2), “External sickness determinants” (F3) and “Personal distress with clinics” (F4). Cronbach Alpha ranged from 0.71 to 0.90. Previous MH training were not frequent (9.09%), and associated with better SC in F2 (after p < 0.05, 6m p = 0.03). Previous mental disorder was frequent (42.16%), and associated with more SC on F2 (p < 0.01) and F3 (p = 0.03) before course, but only on F3 after (p < 0.01) and not 6 months later. Male gender had more SC in F4 (p < 0.01) before course, but after course and 6m later female gender became more SC in F1 (after p = 0.02, 6m p = 0.01) and equivalent in F4. All factors had higher scores after and 6 months later (p < 0.001). The class considered that an interview script is very important for their SC, and improves assistance (mean > 9.0/10.0). Conclusion Obligatory rotation in MH improved SC in students. Previous training and gender were related with long lasting effects in SC.
NECESSIDADES FORMATIVAS DE PROFESSORES DE CIÊNCIAS DE ESCOLAS DO CAMPO: UMA INVESTIGAÇÃO NO SEMIÁRIDO PIAUIENSE
Authors: SILVA ALEXANDRE LEITE DOS SANTOS , LOPES SUZANA GOMES , TAKAHASHI EDUARDO KOJY
Published: June 2021

RESUMO: A análise das necessidades formativas docentes é fundamental para o diagnóstico, a planificação e a tomada de decisões na área da Educação. Essas necessidades podem ser definidas como preocupações, desejos, carências e problemas sentidos e percebidos no processo de ensino, representativos de valores surgidos em determinado contexto. O objetivo deste trabalho é discutir os resultados de uma pesquisa que procurou identificar as necessidades formativas de professores de Ciências de escolas do campo de um município do semiárido piauiense entre os anos de 2017 e 2018. Para isso, os dados foram coletados por meio de formulários, questionários, entrevistas e documentos. Os sujeitos que colaboraram para a pesquisa foram professores de Ciências e diretores de escolas do campo, professores e estudantes de um curso de Licenciatura em Educação do Campo com enfoque em Ciências da Natureza. A análise mostrou que os professores de Ciências das escolas do campo do estudo possuíam as necessidades de melhores condições de trabalho, de adotarem metodologias de ensino não convencionais e de saberes específicos da área de Ciências da Natureza. É ressaltado nos resultados que eles também possuíam as necessidades, embora não conscientes delas, de desenvolverem um ensino contextualizado e de saberes sobre a Educação do Campo.
O (DES) COMPROMETIMENTO DOS PLANOS MUNICIPAIS DE EDUCAÇÃO COM A FORMAÇÃO DOCENTE ESPECÍFICA DE NÍVEL SUPERIOR
Authors: LOCATELLI CLEOMAR
Published: June 2021

RESUMO: O artigo aborda o tratamento dado à formação docente nos planos municipais de educação. Tem como objetivo analisar o comprometimento dos municípios com a formação específica de nível superior e suas possíveis aproximações com tendências de flexibilização da formação inicial do professor. A pesquisa, de caráter predominantemente documental, abarcou dez planos municipais de educação da região Norte do estado do Tocantins e levantou informações correspondentes ao que preconiza a Meta 15 do PNE (2014). Constata-se, nas proposições do planejamento educacional local, maior adesão ou repercussão das demandas que tiveram origem no plano nacional e menor incidência de iniciativas próprias. Parte significativa dos planos municipais analisados adota uma postura de comprometimento indireto ou parcial com a formação específica de nível superior, tornado menos evidente o indicador que revela o cumprimento da meta. Constata-se, ainda, uma razoável aceitação ou repercussão de tendências de caráter tecnicistas para a formação do professor, enfatizando a valorização de experiências práticas e ignorando a defesa da formação universitária/teórica/científica e crítica.
Tratamento de oclusão arterial em membro superior causada por costela cervical
Authors: Milagres Vanessa Aline Miranda Vieira , Avellar Roberto Lucas de Sena , Silva Ana Paula Pires , Pires Neto Pedro José , Pinto Daniel Mendes
Published: June 2021

Resumo A síndrome da costela cervical ocorre quando o triângulo intercostoescalênico é ocupado por uma costela cervical, deslocando o plexo braquial e a artéria subclávia anteriormente, o que pode gerar dor e espasmo muscular. O objetivo deste estudo é discutir sobre o diagnóstico da síndrome da costela cervical e as possibilidades de tratamento. Este desafio terapêutico descreve a condução clínica e cirúrgica de uma paciente de 37 anos com obstrução arterial em membro superior causada por costela cervical.
Isquemia arterial aguda de membros superiores em pacientes diagnosticados com COVID-19: série de casos
Authors: Rosa Felipe Damascena , Burihan Marcelo Calil , Simões Elexandra Aparecida , Abdala João Paulo de Souza , Barros Orlando da Costa , Nasser Felipe
Published: June 2021

Resumo A infecção pelo coronavírus 2 causador da síndrome respiratória aguda grave (SARS-CoV-2) em humanos foi detectada pela primeira vez em Wuhan, na China, em 2019 e dispersada mundialmente ao longo de 2020. As diferentes manifestações clínicas, com amplo espectro de apresentação, desde infecções assintomáticas até formas graves que podem levar a óbito, são desafiadoras. Este trabalho objetiva descrever uma série de quatro casos de isquemia arterial aguda dos membros superiores em pacientes diagnosticados com COVID-19, os quais foram manejados clinicamente com anticoagulação, antiagregação plaquetária e uso de prostanoides. Dois pacientes receberam alta hospitalar com regressão e delimitação da área isquêmica, sem necessidade de intervenção cirúrgica, e dois pacientes faleceram em decorrência de complicações pulmonares. Uma adequada compreensão da fisiopatologia dessa doença pode favorecer um melhor manejo clínico de suas complicações.
The influence of risk management on the project portfolio success – proposal of a risk intensity matrix
Authors: Zanfelicce Ricardo Luis , Rabechini Jr Roque
Published: June 2021

Abstract: This article aims to understand how the risk management influences the project portfolio success. Two methodological approaches were selected in this research: a bibliometric survey followed by a case study. The object of study was the new products project portfolio of an organization from the industrial sector, manufacturer of durable goods. The findings revealed a low intensity of project portfolio risk management. This is aligned with the bibliometric survey results and with the evidence from the investigation performed on the case study unit. In order to evaluate the risk management influence over the portfolio success, this article proposes a matrix which suggests the risk management intensity associated with the project portfolio management processes. The proposed matrix application can be considered a contribution element to deepen the knowledge of the risk management influence on the project portfolio success.