Bibliometric evaluation of the scientific production of the Stomatos Dental Journal

This cross-sectional study aimed to evaluate the abstracts of all articles published in the Stomatos Dental Journal between 1995 and 2009 and to obtain data on the methodological design of each article, the dental specialties focused on, and the authors’ institution of origin. A total of 206 abstracts were reviewed by two independent examiners. The results showed that the most frequent study designs were literature reviews (24.3%), cross-sectional studies (24.3%), laboratory in vitro studies (22.3%), and case reports (18.4%). The dental specialties with the highest number of articles were operative dentistry (16%), endodontics (15.5%), pediatric dentistry (10.7%), and oral and maxillofacial surgery and traumatology (10.2%). Most articles had Universidade Luterana do Brasil (ULBRA/Canoas) as the institution of origin (75.2%). Our findings revealed a pressing need to increase the number of studies with higher levels of evidence in all dental specialties and also to encourage the publication of articles from other institutions in order to qualify the journal

PROGRAMA INSTITUCIONAL DE BECAS DE INICIACIÓN EN DOCENCIA (PIBID) Y EN FORMACIÓN INICIAL DE PROFESORES DE BIOLOGIA: UN ANÁLISIS DEL SUBPROYECTO PIBID CIENCIAS/BIOLOGÍA DE LA UENP , CAMPUS DE LA CIUDAD DE CORNÉLIO PROCÓPIO-PR (BRASIL)

Resumen: Este artículo presenta los resultados del primer año de ejecución del Programa Institucional de Becas de Iniciación en Docencia (PIBID) en el pregrado de Ciencias Biológicas de una Universidad Pública del Norte de Paraná (Brasil). A partir de un análisis textual discursivo del diario de una licencianda que participó en el subproyecto PIBID Ciencias/Biología, en 2014, fue posible mostrar las contribuciones del mismo, en la percepción de las actividades desarrolladas por un profesor dentro del aula (gestión del contenido, gestión de clase y gestión del aprendizaje de la docencia), permitiendo una visión más clara de lo que hemos denominado de bastidores pedagógicos de la acción docente

Current Controversies and Challenges on BRAF V600K-Mutant Cutaneous Melanoma

About 50% of melanomas harbour a BRAF mutation. Of these 50%, 10% have a V600K mutation. Although it is the second most common driver mutation after V600E, no specific studies have been conducted to identify a clinical and therapeutic gold standard for this patient subgroup. We analysed articles, including registrative clinical trials, to identify common clinical and biological traits of the V600K melanoma population, including different adopted therapeutic strategies. Melanoma V600K seems to be more frequent in Caucasian, male and elderly populations with a history of chronic sun damage and exposure. Prognosis is poor and no specific prognostic factor has been identified. Recent findings have underlined how melanoma V600K seems to be less dependent on the ERK/MAPK pathway, with a higher expression of PI3KB and a strong inhibition of multiple antiapoptotic pathways. Both target therapy with BRAF inhibitors + MEK inhibitors and immunotherapy with anti-checkpoint blockades are effective in melanoma V600K, although no sufficient evidence can currently support a formal recommendation for first line treatment choice in IIIC unresectable/IV stage patients. Still, melanoma V600K represents an unmet medical need and a marker of poor prognosis for cutaneous melanoma

Reclamações de clientes como fonte de inovações a partir de uma Base de Help Desk utilizando Data Mining - Um exemplo de aplicação

Em um mercado de acelerada competição e de consumidores cada vez mais exigentes, traçar o perfil do consumidor para adotar melhores estratégias de negociação pode fazer toda a diferença à medida que aumenta a satisfação do cliente. A presente pesquisa teve como objetivo a identificação do perfil de clientes para cada tipo de reclamações identificadas em uma base de dados sobre Help Desk de uma empresa de ração animal. Utilizou-se uma das técnicas de Mineração de Dados, chamada de clustering por meio do algoritmo k-means. A ferramenta selecionada para o respectivo trabalho foi o WEKA. Como resultados foram obtidos 23 clusters, com as respectivas características dos clientes para cada reclamação. Em alguns casos foram gerados 2 ou mais clusters para o mesmo tipo de reclamação , indicando perfis diferentes de clientes para o mesmo tipo de reclamação. Com o resultado, foi possível obter conhecimento das características de cada consumidor para cada tipo de reclamação, permitindo que a organização inove e atenda-os de forma customizada.

Enfoques/tendencias metodológicas de enseñanza de ciencias naturales y matemáticas: una revisión de revistas del área de la enseñanza

This paper presents the results of a systematic review of journals in the Teaching area, classified as Qualis A1, A2 and B1 and published in the period from 2000 to 2015, with the aim of selecting articles that deal (in the Brazilian context) with methodological approaches or trends in teaching methods used by both, science and math researchers and teachers. From 4,651 articles investigated, were selected 149 of them and classified into 33 categories. The data enabled the composition of a list of terms and key expressions on this subject, comprising descriptive elements for future research and showing a terminological polysemy with regard to the presentation of the methodological approaches or trends in teaching, with emphasis on studies that deal with teaching to the detriment of learning of science and math contents.Este trabajo presenta los resultados de una revisión sistemática de revistas del área de la Enseñanza, Qualis A1, A2, B1 y B2, publicados en el período de 2000 a 2015, con el objetivo de seleccionar los artículos que traten (en el contexto brasileño) de enfoques o tendencias metodológicas de enseñanza utilizadas, tanto por investigadores como por profesores de ciencias naturales y matemáticas. De los 4.651 artículos investigados, 149 fueron seleccionados y clasificados en 33 categorías. Los datos posibilitaron una composición de una lista de términos y expresiones clave sobre esta temática, constituyendo elementos descriptores para futuras investigaciones y evidenciando una polisemia terminológica con respecto a la presentación de los enfoques o tendencias metodológicas de enseñanza, con destaque en los estudios que tratan sobre la enseñanza en detrimento del aprendizaje de los contenidos de ciencias y matemáticas

Mapas conceptuales y sus contribuciones para la evaluación y aprendizaje de contenidos de contaminación del agua: una experiencia en la educación primaria brasileña

This paper presents a qualitative research and the results obtained on the use of conceptual maps as instruments of assessment for the meaningful learning of some contents in Science teaching, within the scope primary/elementary education in Brazil. After studying the theory of meaningful learning and the composition of conceptual maps, a sequence of activities on the topic 'water pollution' was developed. These activities were applied to 21 students at fifth grade on the elementary level of a public school located in the northern region of the state of Paraná (Brazil). From the analysis of the maps made up by the students during the diagnostic assessments (initial and final) presented during the application of this sequence, it was possible to demonstrate how conceptual maps can be used as relevant assessment tools and how they can contribute to student learning.Este trabajo presenta una investigación cualitativa y sus resultados sobre el uso de mapas conceptuales como estrategias de evaluación para el aprendizaje significativo de los conceptos de la asignatura escolar: ciencias. Después de estudiar la teoría del aprendizaje significativo y la construcción de mapas conceptuales, fue elaborada una secuencia de actividades sobre el tema 'contaminación del agua'. Esta secuencia fue aplicada en los alumnos en una clase de quinto de primaria de un colegio público de la región norte del estado de Paraná (Brasil). A partir del análisis de los mapas realizados por 21 estudiantes en las evaluaciones diagnósticas (inicial y final) presentadas durante la aplicación de esta secuencia, fue posible demostrar la forma en la cual, los mapas conceptuales pueden ser utilizados pertinentemente como un instrumento importante de evaluación y cómo pueden contribuir en el aprendizaje de los estudiantes

Early mobilization in ischemic stroke : a pilot randomized trial of safety and feasibility in a public hospital in Brazil

Abstract Background: The effect of early mobilization after acute stroke is still unclear, although some studies have suggested improvement in outcomes. We conducted a randomized, single-blind, controlled trial seeking to evaluate the feasibility, safety, and benefit of early mobilization for patients with acute ischemic stroke treated in a public teaching hospital in Southern Brazil. This report presents the feasibility and safety findings for the pilot phase of this trial. Methods: The primary outcomes were time to first mobilization, total duration of mobilization, complications during early mobilization, falls within 3 months, mortality within 3 months, and medical complications of immobility. We included adult patients with CT- or MRI-confirmed ischemic stroke within 48 h of symptom onset who were admitted from March to November 2012 to the acute vascular unit or general emergency unit of a large urban emergency department (ED) at the Hospital de Clínicas de Porto Alegre. The severity of the neurological deficit on admission was assessed by the National Institutes of Health Stroke Scale (NIHSS). The NIHSS and modified Rankin Scale (mRS, functional outcome) scores were assessed on day 14 or at discharge as well as at 3 months. Activities of daily living (ADL) were measured with the modified Barthel Index (mBI) at 3 months. Results: Thirty-seven patients (mean age 65 years, mean NIHSS score 11) were randomly allocated to an intervention group (IG) or a control group (CG). The IG received earlier (p = 0.001) and more frequent (p < 0.0001) mobilization than the CG. Of the 19 patients in the CG, only 5 (26%) underwent a physical therapy program during hospitalization. No complications (symptomatic hypotension or worsening of neurological symptoms) were observed in association with early mobilization. The rates of complications of immobility (pneumonia, pulmonary embolism, and deep vein thrombosis) and mortality were similar in the two groups. No statistically significant differences in functional independence, disability, or ADL (mBI ≥ 85) were observed between the groups at the 3-month follow-up. Conclusions: This pilot trial conducted at a public hospital in Brazil suggests that early mobilization after acute ischemic stroke is safe and feasible. Despite some challenges and limitations, early mobilization was successfully implemented, even in the setting of a large, complex ED, and without complications. Patients from the IG were mobilized much earlier than controls receiving the standard care provided in most Brazilian hospitals

HISTORIA Y FILOSOFÍA DE LA CIENCIA Y SUS CONTRIBUCIONES PARA LA EDUCACIÓN CIENTÍFICA Y MATEMÁTICA: UN ESTUDIO EN PERIODICOS BRASILEROS DEL ÁREA DE ENSEÑANZA

La aproximación entre las áreas de Historia, Filosofía, Matemática y las Ciencias Naturales ha sido bien aceptada no solamente en el ambiente de las investigaciones científicas sino también en el campo educativo, como una alternativa didáctica para la enseñanza del conocimiento científico y matemático. Con todo, se hace necesario comprender como esta aproximación se llevó a cabo. Así, el objetivo de este estudio fue analizar de qué modo las áreas específicas de Biología, Ciencias, Física, Química y Matemática han lidiado con esta aproximación. Por tanto, se emprendió una investigación en tres periódicos brasileros, clasificados en el sistema webqualis como A1 (uno). Los datos recolectados fueron analizados a la luz del Análisis de Contenido, según Bardin. A Partir del análisis fue posible inferir que la cantidad que investigaciones publicadas, relativas a la inserción de los estudios de Historia y Filosofía de la Ciencia en la enseñanza de las Ciencias y Matemáticas es pequeña en comparación a la cantidad total de investigaciones realizadas

Carbon K-edge x-ray emission spectroscopy of gas phase ethylenic molecules

We report on the C K-edge x-ray absorption spectra and the resonant (RXES) and non-resonant (NXES) x-ray emission spectra of ethylene, allene and butadiene in the gas phase. The RXES and NXES show clear differences for the different molecules. Overall both types of spectra are more structured for ethylene and allene, than for butadiene. Using density functional theory–restricted open shell configuration interaction single calculations, we simulate the spectra with remarkable agreement with the experiment. We identify the spectral features as being due to transitions involving localised 1s orbitals. For allene, there are distinct spectral bands that reflect transitions predominantly from either the central or terminal carbon atoms. These results are discussed in the context of ultrafast x-ray studies aimed at detecting the passage through conical intersections in polyatomic molecules

Prolapso uretral em um Bulldogue Inglês

O prolapso uretral é incomum em cães, e se caracteriza pela protusão da mucosa uretral além da extremidade do pênis. O presente relato descreve o caso de um cão, Bulldogue Inglês, 6 meses de idade, atendido no Hospital de Clínicas Veterinárias da Universidade Federal do Rio Grande do Sul (HCV-UFRGS) com histórico de sangramento prepucial. Ao exame físico, o animal apresentou aumento de volume da glande do pênis, de coloração avermelhada e presença de hemorragia local. Descartadas quaisquer outras patologias, confirmou-se o prolapso uretral. Encaminhado para cirurgia, realizou-se ressecção da porção uretral prolapsada e posterior sutura da mucosa uretral no epitélio peniano. Passados 15 dias do procedimento cirúrgico, o animal retornou para revisão onde foi evidenciada completa cicatrização uretral