389 research outputs found

    Opinions of an Iranian nursing faculty on barriers to implementing problem-based learning

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    ABSTRACT We investigated the opinions of all 53 lecturers in the nursing faculty of Tabriz University of Medical Sciences about barriers to implementation of problem-based learning (PBL). A 13-item ques--tionnaire was used which included questions on number and preparedness of students and lecturers, educational space and course content. We found that 95% of the respondents believed that the most important barrier was the students' lack of knowledge and skills in group work and active interaction; 94% also believed that the change in their role from lecturer to facilitator would not reduce their motiva--tion but it could be a potential barrier. The majority (98%) indicated that the cost of implementation and maintenance of PBL, too many students and a shortage of lecturers competent in PBL were among the barriers that needed to be considered. L'avis d'une faculté de soins infirmiers iranienne sur les obstacles à la mise en oeuvre de l'apprentissage par problèmes RÉSUMÉ Nous avons sondé l'opinion de l'ensemble des 53 chargés d'enseignement de la faculté des soins infirmiers de l'Université des Sciences médicales de Tabriz sur les obstacles que rencontre la mise en oeuvre de la méthode d'apprentissage dite problem-based learning (PBL), ou approche par problèmes (APP). Pour ce faire, nous avons utilisé un questionnaire en 13 points visant à déterminer le nombre et l'état de préparation des étudiants et des chargés d'enseignement, l'espace pédagogique et le contenu de l'enseignement. Il nous est apparu que 95 % des personnes interrogées estiment que l'obstacle primordial réside dans la carence des connaissances des étudiants et leurs difficultés d'adaptation aux méthodes de travail de groupe et d'interaction active. En outre, 94 % pensent que leur mutation du statut de chargé d'enseignement au rôle d'animateur-formateur ne devrait pas entamer leur motivation, mais qu'elle pourrait éventuellement être perçue comme un obstacle. La majorité (98 %) souligne que le coût de la mise en application de l'APP comme de son maintien, l'effectif trop impor--tant des étudiants et la pénurie d'enseignants APP sont autant d'obstacles qu'il convient de ne pas négliger

    One Anastomosis/Mini-Gastric Bypass (OAGB/MGB) as Revisional Surgery Following Primary Restrictive Bariatric Procedures: a Systematic Review and Meta-Analysis

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    One anastomosis gastric bypass (OAGB/MGB) has gained popularity in the past decade. International databases were searched for articles published by September 10, 2020, on OAGB/MGB as a revisional procedure after restrictive procedures. Twenty-six studies examining a total of 1771 patients were included. The mean initial BMI was 45.70 kg/m2, which decreased to 31.52, 31.40, and 30.54 kg/m2 at 1, 3, and 5-year follow-ups, respectively. Remission of type-2 diabetes mellitus (T2DM) following OAGB/MGB at 1-, 3-, and 5-year follow-up was 65.16 ± 24.43, 65.37 ± 36.07, and 78.10 ± 14.19%, respectively. Remission/improvement rate from gastroesophageal reflux disease (GERD). Also, 7.4% of the patients developed de novo GERD following OAGB/MGB. Leakage was the most common major complication. OAGB/MGB appears to be feasible and effective as a revisional procedure after failed restrictive bariatric procedures

    Is physical activity related to renal cell carcinoma? A systematic review

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    Introduction: Relationship between renal cell carcinoma and physical activity is not clear. Objectives: This study aimed to review the relationship between renal cell carcinoma and physical activity. Methods: We searched valid databases such as PubMed/Medline, Web of Science and Scopus for search of English papers by 30/12/2018. Eleven articles were selected for final assessment. We used Kidney cancer, Exercise, Kidney Neoplasm, Renal cancer, Physical activity, Renal cell carcinoma, Physical inactivity and Sedentary Lifestyle or a combination of them in the title/abstracts as the keywords. Results: There were 37,742 subjects reviewed in this systematic review of eleven published papers including five standard case-control, three cohorts and three population-based case-control design. Conclusion: According to the results, physical activity has a reverse relationship with renal cell carcinoma. © 2020 The Author(s); Published by So

    Superconducting properties of PEO coatings containing MgB2 on niobium

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    A study has been carried out of superconductivity in coatings formed on niobium by plasma electrolytic oxidation (PEO) in an electrolyte containing different concentrations of MgB2. From preliminary experiments, a suitable PEO condition was selected. The coatings were examined by analytical scanning electron microscopy and X-ray diffraction. Superconductivity was assessed using magnetic moment-field measurements. At 6 K, superconductivity of the niobium dominated, which revealed strong flux pinning and sudden release. The latter was more gradual following PEO, indicating pinning was a surface effect. Between the critical temperature of niobium (9.25 K) and MgB2 (about 39 K), the diamagnetic behaviour of superconducting MgB2 was present, with earlier flux penetration the closer the temperature to 39 K. The hysteresis loop indicated stronger flux pinning for lower temperatures, as expected for a superconductor

    One Anastomosis/Mini-Gastric Bypass (OAGB/MGB) as Revisional Surgery Following Primary Restrictive Bariatric Procedures: a Systematic Review and Meta-Analysis

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    One anastomosis gastric bypass (OAGB/MGB) has gained popularity in the past decade. International databases were searched for articles published by September 10, 2020, on OAGB/MGB as a revisional procedure after restrictive procedures. Twenty-six studies examining a total of 1771 patients were included. The mean initial BMI was 45.70 kg/m2, which decreased to 31.52, 31.40, and 30.54 kg/m2 at 1, 3, and 5-year follow-ups, respectively. Remission of type-2 diabetes mellitus (T2DM) following OAGB/MGB at 1-, 3-, and 5-year follow-up was 65.16 ± 24.43, 65.37 ± 36.07, and 78.10 ± 14.19, respectively. Remission/improvement rate from gastroesophageal reflux disease (GERD). Also, 7.4 of the patients developed de novo GERD following OAGB/MGB. Leakage was the most common major complication. OAGB/MGB appears to be feasible and effective as a revisional procedure after failed restrictive bariatric procedures. © 2020, The Author(s)

    DEVELOPMENT OF THIN FILMS FOR SUPERCONDUCTING RF CAVITIES

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    Abstract Superconducting coatings for superconducting radio frequency (SRF) cavities is an intensively developing field that should ultimately lead to acceleration gradients better than those obtained by bulk Nb RF cavities. ASTeC has built and developed experimental systems for superconducting thin-film deposition, surface analysis and measurement of Residual Resistivity Ratio (RRR). Nb thin-films were deposited by magnetron sputtering in DC or pulsed DC mode (100 to 350 kHz with 50% duty cycle) with powers ranging from 100 to 600 W at various temperatures ranging from room temperature to 800 °C on Si (100) substrates. The first results gave RRR in the range from 2 to 22 with a critical temperature T c 9.5 K. Scanning electron microscopy (SEM), x-ray diffraction (XRD), electron back scattering diffraction (EBSD) and DC SQUID magnetometry revealed significant correlations between the film structure, morphology and superconducting properties

    Sars coronavirus 2, severe acute respiratory syndrome, and middle east respiratory syndrome in children: A review on epidemiology, clinical presentation, and diagnosis

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    Context: Coronavirus Disease 2019 (COVID-19) pandemic has caused irreparable damage to society. The pediatric population may be asymptomatic but has positive viral nucleic acid test results and plays an important role in spreading the infection in populations. However, there is a substantial information gap on the epidemiology, pathology, and clinical presentations of COVID-19 in pediatric patients. Evidence Acquisition: English research articles published before April 18, 2020, were reviewed to understand the clinical characteristics of SARS coronavirus 2, Severe Acute Respiratory Syndrome, and Middle East Respiratory Syndrome in children. The WHO (https://www.who. int/) and CDC (Centers for Disease Control and Prevention, https://www.cdc.gov/) websites were also reviewed to find eligible studies, besides articles extracted from PubMed, Scopus, and Google Scholar. Results: In comparison with SARS and MERS, COVID-19 seems to have wider clinical symptoms and routes of transmission. Multisystem inflammatory syndrome is a unique clinical feature of this novel virus. The low prevalence of COVID-19 in children may be due to lower contacts or incomplete identification rather than resistance to the virus. Conclusions: As this virus is novel, we believe that lessons learned from SARS and MERS outbreaks are very valuable in handling the current pandemic. The aim of this paper was to provide the updated summary of clinical manifestation, diagnostic, molecular, and genetic aspects of the novel coronavirus in comparison with SARS and MERS coronaviruses in children. © 2020, Author(s)
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