bluuebunny/crossref_metadata_2025 huggingface dataset:
Ortaokul Öğrencilerinin Matematik Tutumu ve Problem Çözmeye Yönelik Algılarının Matematik Başarılarıyla İlişkisi
Authors: İLHAN Aziz , GEMCİOĞLU Muharrem , POÇAN Serdal
Published: April 2021

Bu çalışmada ortaokul öğrencilerinin problem çözme becerisine yönelik algıları ve matematik tutumlarının, matematik başarıları ile olan ilişkisinin incelenmesi amaçlanmıştır. Çalışma tarama modeliyle tasarlanmıştır. Araştırma, Türkiye’nin Doğu Anadolu Bölgesinde bulunan bir ilde uygun örnekleme yöntemiyle seçilmiş ortaokullarda öğrenim gören 477 (245 kız, 232 erkek) ortaokul öğrencisi ile gerçekleştirilmiştir. Çalışmada veri toplama aracı olarak “Kişisel Bilgi Formu”, “Problem Çözme Becerisine Yönelik Algı Ölçeği” ve “Matematik Tutum Ölçeği” uygulanmıştır. Verilerin analizi sonucunda matematik tutumu ve problem çözme becerisine yönelik algıları cinsiyet ve anne-baba eğitim durumu değişkenleri açısından farklılaşmadığı, sınıf ve matematik başarısı değişkenleri açısından farklılaştığı tespit edilmiştir. Ek olarak ortaokul öğrencilerinin problem çözme becerisine yönelik algıları ve matematik tutumları ile matematik başarısı arasında pozitif yönde anlamlı bir ilişki tespit edilmiştir. Matematik tutumu ve problem çözme becerisi algısı matematik başarısının birer anlamlı yordayıcılarıdır. Ayrıca matematik tutumu problem çözme becerisinin anlamlı bir yordayıcısı olarak bulunmuştur. Araştırma bulguları neticesinde problem çözme becerisi algısı ve matematik tutumunun öğretim süreçlerinde geliştirilmesi ile ilgili önerilerde bulunulmuştur.
Rentabilidad económica y análisis de sensibilidad del proceso de producción de cerveza a partir de sorgo rojo CIAP R-132 a escala piloto
Authors: Pérez Sánchez Amaury , De Magalhães Malengue Delcio Venâncio , Benitez Cortés Isnel
Published: April 2021

En el presente trabajo se efectuó la simulación de una planta de producción de cerveza a escala piloto (150 L/lote), empleando sorgo rojo ciap r-132 como materia prima principal. Se efectuó un estudio de sensibilidad consistente en 11 corridas experimentales, mediante el cual se evaluó la influencia de tres variables iniciales (capacidad de producción de cerveza por lote, costo de adquisición del sorgo rojo y precio de venta de la botella de cerveza) sobre tres indicadores económicos de importancia: valor actual neto (VAN), tasa interna de retorno (TIR) y período de recuperación de la inversión (PRI). Se deben invertir $ 570.000 pesos cubanos (CUP) para erigir la planta de producción, el costo unitario de producción alcanzó un valor de CUP 12,82/botella, mientras que se obtuvo un valor de VAN, TIR y PRI de CUP 480.000, 28,83 % y 3,82 años, respectivamente, lo cual califica al proyecto como económicamente rentable y factible desde el punto de vista inversionista. Se obtuvieron ecuaciones que establecen la correlación estadística existente entre las tres variables de entrada y las tres de salida. Se empleó el simulador SuperPro Designer® v.8.5 para efectuar la simulación y el software Statgraphics Centurion XVI® para el procesamiento estadístico de los datos.
Estudio holístico de la producción de papel a partir de cáñamo industrial en el contexto colombiano
Authors: Manosalva Barrera Johana Catalina , Dávila Javier Andrés , Quintero Julián Andrés
Published: April 2021

El desarrollo y la investigación de nuevos productos que puedan sustituir parcial o completamente materias primas empleadas para la producción de energía, productos químicos de alto valor añadido e incluso la fabricación de papel, ha permitido que el cáñamo industrial (Cannabis sativa L.) se vuelva atractivo como principal materia prima en la reactivación de una economía de base biológica con altas condiciones y capacidades de producción. A partir de lo anterior, el objetivo de este trabajo investigativo es profundizar sobre el potencial del uso de fibra de cáñamo en la industria del papel, soportado por estudios realizados por el Estado Colombiano en lo referente a las disponibilidad de cultivos forestales con fines comercialesque inicialmente se destinan para la siembra y producción de recursos madereros como el pino y eucalipto. Se ha considerado de importancia demostrar que el cáñamo, como fuente de producción primaria, brinda ventajas competitivas económicas, ambientales y sociales frente a los cultivos tradicionales, incluso para las nuevas fuentes de investigación de base biológica.
Copper-Coated Spacer for Total Femoral Replacement in Recurrent Periprosthetic Joint Infection: A Case Report
Authors: Белокобылов А. А. , Batpenov N. D. , Balgazarov S. S. , Serikbayev V. D. , Krikliviy A. A. , Plotnikov S. V. , Turlybekuly A. , Rimashevskiy D. V.
Published: April 2021

Background. There are few cases of entire femur modular replacement with hip and knee joints in patients with periprosthetic joint infection (PJI) in literature. They report encouraging results in patients of elderly and senile age. We present case of a copper-coated femoral spacer implantation to 50-year-old patient with multiple PJI episodes and osteomyelitis of the entire femur.Clinical presentation. A 40-year-old male patient after resection of the proximal part of the right femur for fibrotic osteodysplasia underwent total hip arthroplasty with replacement of 15 cm of the femur. In December 2010 (20 months after implantation), instability of the femoral component developed, revision arthroplasty was performed with stem recementation. After 4 months, sinus tract formed in the area of the postoperative scar. After another 4 months, the head of the prosthesis was dislocated. In September 2011, the endoprosthesis components were removed and a unipolar cement spacer was implanted. The limb immobilized in a hip spica cast. Methicillin-sensitive S. epidermidis (MSSE) was detected in the preoperative joint aspiration puncture and periprosthetic tissues. After 3 months (December 2011), patient underwent revision total hip arthroplasty (25 cm defect was replaced). 5 years of PJI remission followed. In November 2016 after PJI recurrence the endoprosthesis was removed, and an articulating spacer was implanted. P. aeruginosa was detected in periprosthetic tissues. For the past 2.5 years there were periodically sinus tracts formations. In August of 2019 spacer’s migration resulted in an intercondylar fracture of the right femur. In September 2019, spacer was removed, and MSSE was detected in the surrounding tissues. An articulating cement spacer based on an oncological modular total femur coppercoated endoprosthesis was implanted. At each control examination during the year copper concentration in blood serum was determined, it did not exceed 900–1200 mcg/l. No local or systemic side effects were detected. The patient started working 3 months after surgery. After 6 months poor functioning sinus tract formed in the postoperative scar area in the lower third of the thigh. 1.5 years after the operation, the functional condition is satisfactory.Conclusion. The use of the copper-coated spacer based on modular total femur endoprosthesis with hip and knee joints in a patient with multiple PJI allowed to improve the function of the limb and reduce the severity of the infectious process. No local or systemic toxic effects of copper were detected.
Distraction Osteogenesis in the Combined and Sequential Use of Transosseous and Intramedullary Osteosynthesis: Experimental Study
Authors: Shchepkina E. A. , Lebedkov I. V. , Netylko G. I. , Solomin L. N. , Anisimova L. O. , Trushnikov V. V. , Sushkov I. V.
Published: April 2021

Background. The methods of “lengthening over the nail” (LON) and the sequential use of the external fixation and nailing in the option “lengthening and then the nail” (LATN) are characterized by ignoring non-observance of the formulated by G.A. Ilizarov is the most important condition for optimizing the osteogenesis process, namely, the preservation of medullary blood supply and osteogenic bone marrow tissue. At the same time, in clinical practice, there was no negative effect of the intramedullary nail on the formation of the regenerate. In experimental studies, the activation of periosteal bone formation during LON is noted. But the active periosteal bone formation detected in clinical practice with a sequential technique has not been confirmed by experimental studies.The aim of the study was to compare the organotypical rebuilding of the distraction regenerate during tibial lengthening in rabbits according to Ilizarov, over the intramedullary fixator and with the sequential use of the external fixation and nailing.Materials and Methods. The study was carried out on 54 mature rabbits of the Soviet Chinchilla breed, which were divided into 3 groups of 18 animals. In Gr-1 (control), the tibia was lengthened by 1 cm in a mini-Ilizarov apparatus at a rate of 1 mm per day for 4 sessions step. In Gr-2, the LATN technique was modeled. After the end of lengthening, an intramedullary fixator was implanted installed, the apparatus with the presence of wires only in the base supports was kept as an imitation of blocking the intramedullary fixator. In Gr-3, lengthening was performed over the intramedullary fixator; at the end of lengthening, the wires were left only in the base supports. The fixation period was is 30 days. The total duration of the experiment is 45 days. On the 10th, 15th, 20th, 30th, 45th day X-ray, CT and morphological studies were performed during the experiment.Results. In the experimental groups, a more pronounced periosteal bone formation in the area of regenerates was noted, while in Gr-3 (LON) cortical plates were formed mainly from the periosteal component, and in Gr-2 (LATN) wide cortical plates were formed from the intermediate and periosteal areas. In this group, the maximum densitometric density values are noted. Endosteal bone formation was preserved in all groups.Conclusion. The LON and LATN techniques, when compared with the classical Ilizarov lengthening, do not demonstrate any deficiency in the organotypical rebuilding of the bone tissue of the regenerates. All zones of bone formation are present, including endosteal, with intense periosteal bone formation. The most powerful bone structures are formed with the sequential use of the external fixation and nailing (LATN) in the form of the formation of wide cortical plates due to the intermediate and periosteal zones of the regenerate.
Los hongos liquenizados del género Glyphis en Veracruz, México
Authors: Guzmán-Guillermo Jorge , Barrera-Bernal Clementina , Llarena-Hernández Régulo Carlos
Published: April 2021

Antecedentes y Objetivos: La familia Graphidaceae es considerada como una de las de mayor representatividad de hongos liquenizados, tanto en México como en el mundo. Aproximadamente 175 de sus especies se han registrado en México. El objetivo de este estudio fue realizar una revisión taxonómica de Glyphis en Veracruz, mediante el análisis de literatura y colectas de material proveniente de la zona tropical del gradiente altitudinal de “Cofre de Perote”, Veracruz, México.
Métodos: Se colectaron microlíquenes de localidades ubicadas en ecosistemas tropicales del gradiente altitudinal de “Cofre de Perote”, Veracruz, México, en bosque mesófilo de montaña y selva baja caducifolia. El material se procesó y depositó en el herbario XALU, y se analizó utilizando técnicas convencionales de liquenología respecto a morfología y macroquímica. Se consultaron bases de datos y trabajos previos para conocer la distribución de las especies de Glyphis en México y el mundo; además, se construyó una clave taxonómica de las especies aquí abordadas.
Resultados clave: Glyphis scyphulifera y G. atrofusca se reportan por primera vez en el estado de Veracruz y Glyphis substriatula se cita por primera vez en México. Se incluye una clave para la determinación de las especies de Glyphis conocidas para México.
Conclusiones: De acuerdo con las colectas realizadas en la zona tropical del gradiente altitudinal de “Cofre de Perote”, Veracruz, México, se encontró que cuatro de las cinco especies de Glyphis aceptadas en el mundo habitan en este lugar, estando Glyphis cicatricosa y G. scyphulifera en toda la parte muestreada del gradiente, mientras que G. atrofusca y G. substriatula están restringidas a elevaciones bajas.
Trece malezas nuevas en Isla Cedros, Baja California, México
Authors: Vanderplank Sula E , Rebman Jon
Published: April 2021

Antecedentes y Objetivos: Isla Cedros es el límite sur de la Provincia Florística de California, la isla más grande en el archipiélago californiano, y hogar de varias plantas y animales endémicos. Como tal es un recurso importante dentro de la Reserva de la Biosfera Islas del Pacífico de la Península de Baja California con muchos desafíos de manejo. El objetivo de este estudio es documentar las especies de plantas recién llegadas a Isla Cedros, Baja California, México.Métodos: Entre el 8 y el 11 de febrero 2019, visitamos la Isla Cedros e hicimos observaciones usando la plataforma NaturaLista (iNaturalist).Resultados clave: Trece nuevos taxa de plantas fueron detectados cerca del pueblo de Cedros, y todos eran no-nativos. Estos descubrimientos siguen la muy reciente publicación de un listado florístico, sugiriendo que las nuevas especies no-nativas son de reciente establecimiento.Conclusiones: Las implicaciones recomendadas para el manejo de la isla incluyen el monitoreo y la erradicación de estas especies nuevas, particularmente en áreas habitadas, dando prioridad a las especies más invasivas como Cenchrus setaceus y C. ciliaris.
Exploring Breaks in Sedentary Behavior of Older Adults Immediately After Receiving Personalized Haptic Feedback: Intervention Study
Authors: Compernolle Sofie , Van Dyck Delfien , Cardon Greet , Brondeel Ruben
Published: April 2021

Background

“Push” components of mobile health interventions may be promising to create conscious awareness of habitual sedentary behavior; however, the effect of these components on the near-time, proximal outcome, being breaks in sedentary behavior immediately after receiving a push notification, is still unknown, especially in older adults.

Objective

The aims of this study are to examine if older adults break their sedentary behavior immediately after receiving personalized haptic feedback on prolonged sedentary behavior and if the percentage of breaks differs depending on the time of the day when the feedback is provided.

Methods

A total of 26 Flemish older adults (mean age 64.4 years, SD 3.8) wore a triaxial accelerometer (Activator, PAL Technologies Ltd) for 3 weeks. The accelerometer generated personalized haptic feedback by means of vibrations each time a participant sat for 30 uninterrupted minutes. Accelerometer data on sedentary behavior were used to estimate the proximal outcome, which was sedentary behavior breaks immediately (within 1, 3, and 5 minutes) after receiving personalized haptic feedback. Generalized estimating equations were used to investigate whether or not participants broke up their sedentary behavior immediately after receiving haptic feedback. A time-related variable was added to the model to investigate if the sedentary behavior breaks differed depending on the time of day.

Results

A total of 2628 vibrations were provided to the participants during the 3-week intervention period. Of these 2628 vibrations, 379 (14.4%), 570 (21.7%), and 798 (30.4%) resulted in a sedentary behavior break within 1, 3 and 5 minutes, respectively. Although the 1-minute interval did not reveal significant differences in the percentage of breaks depending on the time at which the haptic feedback was provided, the 3- and 5-minute intervals did show significant differences in the percentage of breaks depending on the time at which the haptic feedback was provided. Concretely, the percentage of sedentary behavior breaks was significantly higher if personalized haptic feedback was provided between noon and 3 PM compared to if the feedback was provided between 6 and 9 AM (odds ratio 1.58, 95% CI 1.01-2.47, within 3 minutes; odds ratio 1.78, 95% CI 1.11-2.84, within 5 minutes).

Conclusions

The majority of haptic vibrations, especially those in the morning, did not result in a break in the sedentary behavior of older adults. As such, simply bringing habitual sedentary behavior into conscious awareness seems to be insufficient to target sedentary behavior. More research is needed to optimize push components in interventions aimed at the reduction of the sedentary behavior of older adults.

Trial Registration

ClinicalTrials.gov NCT04003324; https://clinicaltrials.gov/ct2/show/NCT04003324
Selective head–neck cooling after concussion shortens return-to-play in ice hockey players
Authors: Gard Anna , Tegner Yelverton , Bakhsheshi Mohammad Fazel , Marklund Niklas
Published: April 2021

We aimed to investigate whether selective head–neck cooling could shorten recovery after sports-related concussions (SRCs). In a nonrandomized study of 15 Swedish professional ice hockey teams, 29 concussed players received immediate head and neck cooling for ≥30 min (initiated at 12.3 ± 9.2 min post-SRC by a portable cooling system), and 52 SRC controls received standard management. Players receiving head–neck cooling had shorter time to return-to-play than controls (7 vs 12.5 days, p < 0.0001), and 7% in the intervention group versus 25% in the control group were out of play for ≥3 weeks (p = 0.07). Immediate selective head–neck cooling is a promising option in the acute management of SRC that should be addressed in larger cohorts.
ПРАКТИЧЕСКИЙ МЕТОД ВЫДЕЛЕНИЯ СИНФАЗНЫХ И ДИФФЕРЕНЦИАЛЬНЫХ ШУМОВ ПРИ ИЗМЕРЕНИЯХ КОНДУКТИВНЫХ ПОМЕХ
Authors: Цзян Л. , Ван Ф. , Солуша К. , Мэтьюс К.
Published: April 2021

Знание того, где появляются синфазные и дифференциальные шумы в спектре кондуктивного излучения, позволяет разработчикам источников питания эффективно применять методы подавления электромагнитных помех. В статье представлен практический метод выделения синфазных и дифференциальных помех для импульсного стабилизатора LTC7818 от Analog Devices.
СОВРЕМЕННЫЕ РЕШЕНИЯ ДЛЯ МОДЕЛИРОВАНИЯ И ПРОЕКТИРОВАНИЯ МЭМС В СРЕДЕ CoventorMP
Authors: Соловьев А. , Курдюков С.
Published: April 2021

Специализированная платформа разработки CoventorMP позволяет эффективно проектировать, оптимизировать и интегрировать МЭМС-устройства. В статье рассмотрен основной функционал, возможности системы, а также особенности инструментов MEMS+ и CoventorWare, входящих в состав CoventorMP.
ENVIRONMENTAL DEPENDENCE OF AGE, STELLAR MASS, STAR FORMATION RATE AND STELLAR VELOCITY DISPERSION OF ACTIVE GALACTIC NUCLEUS HOST GALAXIES
Authors: Deng Xin-Fa , Wen Xiao-Qing
Published: April 2021

Using the apparent-magnitude limited active galactic nucleus (AGN) host galaxy sample of the Sloan Digital Sky Survey Data Release 12 (SDSS DR12), we investigate the environmental dependence of age, stellar mass, the star formation rate (SFR) and stellar velocity dispersion of AGN host galaxies. We divide the whole apparent-magnitude limited AGN sample into many subsamples with a redshift binning size of Δz = 0.01, and analyse the environmental dependence of these galaxy properties of subsamples in each redshift bin. It turns out that these parameters of AGN host galaxies seemingly only have a weak environmental dependence.
ANALYTIC SOLUTIONS FOR TRUNCATED PLASMONS
Authors: Cantó J. , Raga A. C.
Published: April 2021

We present a new plasmon model for a cometary clump moving supersonically in an environment with a non-zero gas pressure. We find that the environmental pressure produces a cutoff in the wings of the cometary clump, therefore resulting in quite "stubby" plasmons for a large range of flow Mach numbers. We derive a relation between the length-to-width ratio of the plasmon and the Mach number M of the flow, which could be used to directly derive M from observations of (appropriate) cometary clumps.
ARTIFICIAL NEURAL NETWORK MODELING OF THE CONFORMABLE FRACTIONAL ISOTHERMAL GAS SPHERES
Authors: Azzam Yosry A. , Abdel-Salam Emad A-B. , Nouh Mohamed I.
Published: April 2021

The isothermal gas sphere is a particular type of Lane-Emden equation and is used widely to model many problems in astrophysics, like the formation of stars, star clusters and galaxies. In this paper, we present a computational scheme to simulate the conformable fractional isothermal gas sphere using an artificial neural network (ANN) technique, and we compare the obtained results with the analytical solution deduced using the Taylor series. We performed our calculations, trained the ANN, and tested it using a wide range of the fractional parameter. Besides the Emden functions, we calculated the mass-radius relations and the density profiles of the fractional isothermal gas spheres. The results obtained show that the ANN could perfectly simulate the conformable fractional isothermal gas spheres.
Transparencia editorial en revistas científicas mexicanas de educación: hacia una gestión integral de las políticas editoriales en las publicaciones periódicas científicas
Authors: Fernández Bajón María Teresa , Guerra González Jenny Teresita
Published: April 2021

El objetivo principal de esta contribución se enmarca en el estudio sobre la transparencia editorial en las 18 revistas mexicanas de educación indizadas en el Sistema de Clasificación de Revistas Mexicanas de Ciencia y Tecnología del Conacyt. El análisis se sustenta en la comprobación del cumplimiento total, parcial o nulo de 15 criterios definidos por las autoras a partir de la revisión de los Principles of Transparency and Best Practice in Scholarly Publishing, publicado en 2018 por el Comitte on Publication Ethics (COPE), y de las Directrices para autores y traductores de artículos científicos publicados en inglés, propuesto en el mismo año por la European Association of Science Editors (EASE). De los resultados obtenidos destacamos los siguientes: sólo una de las 18 revistas analizadas cumple con los 15 criterios establecidos; cinco publicaciones presentan una alta transparencia editorial al cumplir con 14 criterios, y dos revistas cumplieron únicamente nueve de los criterios de transparencia editorial. Se concluye advirtiendo sobre la necesidad de que la transparencia editorial sea un estándar de cumplimiento obligatorio para la indización o permanencia en sistemas de publicaciones como el de Conacyt.
Russia-Canada Relations in the Period of Crisis, 2014-20
Authors: Viakhireva Natalia
Published: April 2021

This article explores the state of Russia-Canada relations 2014-2020, and identifies areas where cooperation is possible. The bilateral relations are deeply affected by the overall crisis in Russia-West relations, and are at the lowest point since the end of the Cold war. The war of sanctions and accusatory rhetoric by officials from the both sides have come to the forefront. However a “niche cooperation” between Russia and Canada is possible in the areas where both sides can find common interests. Cooperation on non-political issues, using instruments of alternatives diplomacies: track-2 diplomacy, paradiplomacy, business diplomacy and parliamentary diplomacy, are all viable approaches, and provide the potential for a positive experience of interaction in the period of crisis. One of the most promising dimensions of Russia-Canada cooperation is interaction in the Arctic region in bilateral and multilateral frameworks.
Offensive Weapons and the Future of Arms Control
Authors: Teeple Nancy Jane
Published: April 2021

With a focus on the strategic competition between the United States and Russia, this paper explores the prospects for the future of arms control under an intensifying nuclear security dilemma. The end of stability-enhancing agreements such as the INF Treaty and Open Skies has accelerated the arms race. What is the future of New START and are we likely to see any extension beyond 2021? The relationship between arms control and strategic stability is part of this evaluation, particularly with respect to how states view the concept framed within their national security interests. The provocative role that offensive – deterrence by denial – capabilities play in contributing to strategic instability is central to this study. This work looks particularly at new systems designed for asymmetric advantage, including those that can defeat strategic defences, such as longer-range cruise missiles and hypersonic vehicles. Under conditions of modernizations and upgrades to nuclear arsenals, including the entanglement of conventional and nuclear systems that can threaten a first strike, this work considers how a dialogue on limiting dangerous systems could be initiated between the US and Russia. Could New START be revised – or a new treaty established – to limit advances in cruise missile technology, hypersonics, missile defences, and tactical nuclear weapons?
Investigating the accuracy of the excess determination at the levelling station basing on the results of multiple measurements
Authors: Azarov B.F.
Published: April 2021

The author considers the accuracy of multiple measuring the excess obtained during the work on geodesic support of the definition of certain road sections surface wear-and-tear degree in the Altai region. Basing on these results in nine cycles for seven federal highways’ sections, the accuracy of determining the excess between the reference points and the roadway points was evaluated. It is noted that at performing the work, the standard deviation measuring excess at the station can serve as a criterion for accuracy. Various options of its calculation are considered, depending on which measurements are taken in joint processing. The analysis of the root-mean-square errors obtained as a result of parsing different variants is performed. It is also noted that the data gathered during the research should be considered at engineering-technical leveling as well as in the process of measuring the values of seasonal road base points’ changes in automobile road sections which are surveyed to define the deterioration rate of the road pavement.
VIVÊNCIAS COM PLANTAS NO UFF ESPAÇO AVANÇADO: DISCUTINDO OS CONCEITOS DE ESPÉCIE E PLASTICIDADE FENOTÍPICA
Authors: Mancebo Sueli Soares de Sá , Campos Luana Vieira , Lima Helena Roland Rodrigues , Lima Neuza Rejane Wille
Published: April 2021

O processo de envelhecimento dos brasileiros deverá se intensificar nos próximos 30 anos, aumentando a demanda social no que se refere à inclusão de um público ávido por atividades e novos conhecimentos. O UFF Espaço Avançado (UFFESPA) é um programa de extensão universitária que desde 1993 atua ofertando atividades às pessoas idosas e aposentadas. O objetivo deste estudo foi promover, aos atendidos pelo UFFESPA, vivências sobre conceitos de espécie e de plasticidade fenotípica, envolvendo planta de importância medicinal e vegetais comestíveis.  Três atividades foram realizadas: i) mini palestra que abordou os conceitos de espécie e plasticidade fenotípica; ii) exposição de fotos de variedades de vegetais comestíveis;  iii) oficina que envolveu estratégias para acusar as percepções visuais, táteis e olfativas dos participantes em relação as características das folhas de exemplares de Boldo Mirim (Plectranthus neochilus Schltr.) que foram cultivados por quatro meses em oito condições experimentais (dois tipos de adubo e quatro incidências de intensidade solar). Cada uma das três atividades durou 20 minutos. Todos os 10 idosos presentes no UFFESPA no dia das atividades - idades entre 65 e 81 anos - participaram de modo dinâmico, tiveram a oportunidade de construir novos conhecimentos sobre conceitos biológicos abordados e puderam sanar seus questionamentos, atendo os propósitos almejados pelo presente estudo. As ações envolvendo idosos devem ser incentivadas e aprimoradas visando ampliar seus conhecimentos e proporcionar uma maior participação deste grupo na sociedade.
ABORDAGEM DE CONTEÚDOS CIENTÍFICOS EM SITUAÇÕES COTIDIANAS A PARTIR DA ANÁLISE DA SÉRIE FRIENDS: COMO TRABALHAR AS CONCEPÇÕES ALTERNATIVAS QUE MUITOS ESTUDANTES LEVAM PARA A SALA DE AULA?
Authors: Tokairin Maria Eduarda Ferreira Lima , Pereira Paulo Antônio Cypriano
Published: April 2021

Sendo de grande importância a utilização de recursos audiovisuais como ferramenta estimuladora, o presente trabalho visa estabelecer contextos interativo-dialógicos no processo de ensino-aprendizagem para o ensino de Ciências e Biologia, diversificando recursos didáticos que estimulem o estudante em sala. Para isso, foram analisados episódios da série FRIENDS, na qual os conteúdos de Biologia e Ciência apresentados pelos personagens foram identificados e avaliados para sua possível utilização como ferramenta para o ensino-aprendizado dos conteúdos abordados em sala de aula. Após a análise, os conteúdos foram classificados de acordo com o assunto abordado, e inseridos em um quadro de modo a compilar as informações do episódio, como o momento em que o tema foi abordado, temporada, o conteúdo a qual essas informações pertencem e a série/ano em que esse tópico pode ser aplicado. Para a definição da classe escolar em que o assunto é lecionado foi utilizada a Base Nacional Comum Curricular (BNCC), e dela foram extraídos os conteúdos pertinentes a cada série/ano. Catorze temas/assuntos foram distinguidos no seriado FRIENDS, sendo Geologia, Paleontologia, Embriologia e Anatomia Humana os mais frequentes. Apresenta-se catalogação da menção de cada tema/assunto no seriado como ferramenta para o planejamento do fazer docente com o uso de mídias. Aborda-se, também, a utilidade das concepções alternativas como discurso do senso comum e possibilidade de confronto com a discussão científica de forma atrativa ao educando.
TRILHAS INTERPRETATIVAS COMO INSTRUMENTO PARA EDUCAÇÃO AMBIENTAL: UMA CONSTRUÇÃO PARTICIPATIVA COM A COMUNIDADE DO ENTORNO DE UMA RESERVA FLORESTAL URBANA
Authors: Orlato Selem Sara Lucia , Moreira Ana Lúcia Olivo Rosas
Published: April 2021

A reserva urbana do Parque Municipal do Cinquentenário, localizada no município de Maringá – PR, devido às intervenções antrópicas sofre impactos ambientais que comprometem a sua conservação. Um dos objetivos da presente pesquisa foi avaliar os possíveis impactos ambientais por meio de entrevistas, com questões semiestruturadas, realizadas com os moradores do entorno do Parque. Estes dados, assim, tiveram como objetivo ampliar os temas e as informações de uma trilha interpretativa para a prática de Educação Ambiental. A pesquisa contou com 10 participantes, possibilitando incorporar conceitos socioambientais, durante a atividade de uma trilha interpretativa guiada. A trilha foi elaborada com seis pontos, que são representados pelos marcos referenciais identificados pelos temas relevantes. Destacaram-se os aspectos relacionados a criação de uma sede de Educação Ambiental e histórico da reserva, ecologia da floresta, espécie exótica, cultura do lixo, córrego Mandacaru e avaliação do participante. Seguiu-se a pesquisa qualitativa, cujos resultados foram fundamentados nos princípios de análise de conteúdos. Os resultados mostraram que a integração dos saberes complementou os referidos marcos para interpretação da unidade de conservação. As temáticas contribuíram para validar uma prática socioambiental de pesquisa científica e ampliar os temas com a participação do visitante, implantando seus resultados como práticas futuras de Educação Ambiental nesta Unidade de Conservação.
Análise da qualidade do serviço público de coleta seletiva a partir da perspectiva das cooperativas de catadores de materiais recicláveis da zona oeste do município do Rio de Janeiro à luz do modelo das cinco lacunas.
Authors: Vieira Luiza , Faria Marina
Published: April 2021

evolução nos modos de produção levou a sociedade a novos hábitos de consumo, através do quais passaram a descartar industrializados como vidros, plásticos, metais diversos e outros. Estes não apresentam fácil decomposição, podendo levar milhares de anos para se diluírem na natureza. A reciclagem surgiu enquanto uma das alternativas para frear a presença da grande quantidade dessas novas substâncias no meio ambiente. Para que a reciclagem ocorra, é necessária uma cadeia de coleta seletiva bem estruturada. No município do Rio de Janeiro, esse canal tem como principais sujeitos os moradores, a Comlurb e as cooperativas de materiais recicláveis. Neste cenário, as cooperativas são o usuário final da cadeia de coleta seletiva, pois têm em mãos o resultado quantitativo e qualitativo do esforço da Comlurb empregado em toda a rede de coleta. As cooperativas demonstraram no decorrer do estudo ter o know-how suficiente para opinar de forma crítica sobre a qualidade do serviço. Assim, o estudo pretende verificar se existe congruência entre as expectativas e as percepções dos usuários finais do serviço de coleta seletiva de resíduos sólidos urbanos, fornecido pela Comlurb, na zona oeste do município do Rio de Janeiro, quanto à qualidade dos serviços prestados. O principal propósito é analisar a qualidade deste serviço pela perspectiva das cooperativas de catadores de materiais recicláveis à luz do modelo das cinco lacunas do marketing de serviços. Essa ferramenta tem enquanto alicerce a comparação entre expectativas e percepções do usuário final acerca do serviço prestado.
La Sucesión en las Empresas Familiares: Una Discusión a partir de la Identidad Organizacional
Authors: Lima Bandeira Mariana , López Parra Fernando , Reinoso Navarro Marcelo
Published: April 2021

Este estudo sustenta que a sucessão em uma empresa familiar também é uma questão de identidade organizacional. Nosso argumento baseia-se na ideia de que a sucessão nos negócios da família é possível quando há um forte processo de identificação com a empresa, que não está necessariamente vinculado unilateralmente à história da empresa familiar e aos laços familiares diretos, mas pode existir quando histórias pessoais estabelecem um processo de identificação com histórias familiares. Nesse panorama, baseado em uma revisão da literatura sobre processos de sucessão no campo das empresas familiares e sobre identidade organizacional, são construídas algumas reflexões que podem gerar pesquisas futuras. Trata-se de um estudo que não se enquadra na linha dos estudos funcionalistas, pois suscita reflexões a partir da dinâmica intersubjetiva.
Efetividade da capacitação no serviço público: percepção do cidadão como cliente em um estudo em instituições federais
Authors: Da Silva Shirleia Araujo , Medeiros Ribeiro Salles Denise , Rosa Dutra Daniel
Published: April 2021

Cada vez mais o cidadão torna-se consciente da necessidade de cobrar uma prestação de serviços de qualidade visto que é quem sustenta a máquina pública e desse modo o artigo verificou a percepção de servidores técnico-administrativos de instituições federais de ensino quanto à efetividade da capacitação frente às demandas da sociedade e da própria instituição. Foram realizadas quinze entrevistas com servidores das instituições públicas federais: Universidade Federal Fluminense, Universidade do Estado do Rio de Janeiro e Colégio Pedro II. Dentre os entrevistados, estão responsáveis por capacitação, gestores e servidores alunos. A pesquisa demonstrou interesse das equipes em se desenvolver, desde os recém-ingressos quantos os mais experientes Além disso, observou-se um comprometimento afetivo dos servidores com sua instituição com o intuito de se ter efetividade com as ações por elas oferecidas. O estudo mostrou que há efetividade na rotina de trabalho, embora limitados pelas particularidades da Administração Pública.
A cidadania na reforma do Estado brasileiro: discurso oficial e percepção empírica
Authors: Jordão Claudia Da Silva , Justen Agatha
Published: April 2021

A reforma do Estado no Brasil, em particular no plano da administração pública, tem se apresentado como um projeto inesgotável, tendente a se repetir como panacéia a cada governo. Às vésperas de uma nova reforma administrativa, anunciada pelo atual governo brasileiro, recupera-se nesse artigo a discussão inacabada sobre a última grande reforma ocorrida na década de 1990. O objetivo é expor as impressões sobre a reforma ocorrida e em particular sobre o exercício da cidadania, passados na ocasião da pesquisa, mais de dez anos das mudanças que pretendiam submeter o aparelho público ao interesse do cidadão. Para realizar o estudo, além da pesquisa bibliográfica, realizou-se uma pesquisa de campo - a aplicação de survey a um público qualificado, pós-graduandos da Universidade Federal Fluminense - com o intuito de mensurar o grau de adesão ao discurso da reforma gerencialista e verificar em que dimensão esse público tem exercido efetivamente a sua participação-cidadã. Como resultado, observou-se que os maiores índices de participação foram aqueles relacionados à esfera do consumo e à reivindicação dos direitos individuais. A preocupação e o dever de ser cidadão foram reduzidos à condição de consumidor.
The managers’ decisions submitted to the approval of the general meeting: Review of Turkish Commercial Code regulations
Authors: Özer Işik
Published: April 2021

Article 625/2 of the Turkish Commercial Code (TCC), adapted from the Swiss Code of Obligations (Obligationenrecht 811, hereinafter referred as OR 811), allows managers to submit certain decisions and individual matters to the approval of the general meeting. This paper purports to reveal how this article could be interpreted and the regulations to be made in the agreements of limited liability companies in Turkish law. To do that, an interpretation of article 625/2 of TCC is developed. In addition, the effect of this article on the liability of the managers and the references made to articles 51 and 52 of the Turkish Code of Obligations (TCO) are explained. With a regulation added in the agreement of the company, the managers would either be required to submit or they would be free to choose to submit certain decisions and individual matters to the approval of the general meeting. Considering that the submission slows down the decision-making process and causes additional costs, granting the managers the right to choose becomes an important issue. However, the approval of the general meeting does not remove the liability of the managers. So when a lawsuit for liability is filed against managers, the approval of the general meeting may decrease the payment for compensation (articles 51 and 52 of TCO)
Hepatorenal Dysfunction Predicts Operative Mortality After Triple Valve Surgery: Utility of MELD-Na
Authors: Lim Kevin , Chow Chi Ying Simon , Ho Yan Kit , Wan Song , Underwood Malcolm , Wong Hung Leung Randolph
Published: April 2021

Background Despite significant advancements in operative techniques and
myocardial protection, triple valve surgery (TVS) remains a formidable
operation with a relatively high in-hospital mortality. We evaluated the
prognostic value of Model for End-stage Liver Disease score including
sodium (MELD-Na) for mortality after TVS and its predictive value when
incorporated in the EuroSCORE risk model. Methods We performed a
retrospective cohort study of 61 consecutive patients who underwent TVS
from November 2005 to June 2016. Demographics, clinical, biochemical,
and operative data were collected and analysed. Results Median follow-up
duration was 8.0 years. 70.5% of patients suffered from rheumatic heart
disease. 86.9% underwent mechanical double valve replacement with
tricuspid valve repair. There were six operative deaths (9.84%), with
the most common cause of death being multiorgan failure (83.3%). 26.2%
had a moderately elevated MELD-Na score of 9 to 15, and 4.9% had a
severely elevated score of >15. Patients with a MELD-Na
>9 had a higher unadjusted rate of operative mortality,
prolonged ventilation, need for dialysis and acute liver failure after
TVS. Hierarchical logistic regression was performed using logistic
EuroSCORE as the base model. After risk adjustment, each point of
MELD-Na score increase was associated with 1.405 times increase in odds
of operative mortality. The regression analysis was repeated by
incorporating individual components of the MELD-Na score, including
bilirubin, sodium, and albumin. All three biochemical parameters were
significantly associated with operative mortality Conclusion MELD-Na
score as a quantifier of hepatorenal dysfunction is sensitive and
specific for mortality after triple valve surgery.
Etiologies of Hemodynamically Significant Aortic Regurgitation and Coronary Cusp Bending: Evaluation by Transesophageal Echocardiography
Authors: Hoshino Naoki , Yamada Akira , Hoshino Meiko , Kawada Yuka , Yamabe Sayuri , Takada Kayoko , Sugimoto Kunihiko , Izawa Hideo
Published: April 2021

Background: While the number of patients with aortic regurgitation (AR)
has been increasing in the aging society, its etiologies remain to be
fully elucidated. Methods: We studied consecutive 126 patients with
chronic moderate or severe AR who underwent TEE. After the study
subjects were divided into 2 groups by the age of 65 years, AR etiology
was examined in each group. Results: In the older group (n = 85), cusp
bending was the most frequent cause of AR (48.2%), and right coronary
cusp (RCC) was the most common (90.2%). In the younger group (n=41),
bicuspid valve was the most frequent cause (36.5%), and cusp bending
was less frequent (16.5%). Multivariate analysis revealed that age was
the only factor associated with cusp bending. Conclusion: Cusp bending
of RCC was the most frequent etiology of AR in the elderly. Because AR
caused by cusp bending has a possibility to be mended by aortic plasty,
it is important to detect it by TEE especially in the older patients.
Infectious Rupture of a Dissecting Thoracoabdominal Aortic Aneurysm Due to Citrobacter freundii
Authors: Hashimoto Masafumi , Mogi Kenji , Sakurai Manabu , Sakata Tomoki , Tani Kengo , Takahara Yoshiharu
Published: April 2021

Here we describe a case involving an elderly man with Citrobacter
freundii-associated infectious rupture of a dissecting thoracoabdominal
aortic aneurysm. We performed emergency thoracoabdominal aortic
replacement using a rifampicin-soaked prosthetic graft and omental flap
wrapping. The patient was discharged on postoperative day 255, although
he experienced pseudomembranous enteritis and paraplegia.
Free partial patch and partial tube jejunal graft transfers were used to reconstruct pharyngoesophageal defect: Our experience with three cases
Authors: Liu Jifeng , Yu Rong , Deng Di , Li Linke , Wang Ji , Li Bo , Lv Dan , Liu Jun , Chen Fei
Published: April 2021

Those patients with hypopharyngoesophageal cancer often sacrificed
larynx before reconstruction using jejunum to restore the continuity of
the digestive tract and allow oral alimentation. We retrospectively
collected and analyzed three patients who underwent
hypopharyngoesophageal reconstruction by free partial patch and partial
tube jejunal graft transfer with reservation of laryngeal function
caused by hypopharyngeal cancer invading the cervical esophagus. The
partial patch and partial tube jejunal graft transfer survival rate was
100%(3/3). The larynx was reserved in the three patients. The partial
patch and partial tube jejunal graft transfer is a safe and reliable
choice for reconstruction of large and complex defects after
pharyngectomy and cervical esophagectomy with larynx preserved.
Low total gamma globulin level discovery at diffuse large B cell lymphoma diagnosis predicts high risk of infection-related death: data from a monocentric retrospective study
Authors: NGUYEN Alexandre , Martin-Silva Nicolas , Boysson Hubert de , Deshayes Samuel , Gac Anne-Claire , Reboursière Emilie , Damaj Ghandi , Aouba Achille
Published: April 2021

Objective: Diffuse-large-B-cell-lymphoma (DLBCL) can complicate
B-cell-primary-immunodeficiencies (PIDs) course or induce total
gamma-globulin level (TGL) lowering, whose clinical status as an
effective secondary immunodeficiency (SID) remains unspecified. This
study aims to assess the frequency, clinical and prognostic relevance of
the lowest TGLs discovered at DLBCL diagnosis. Results: In a two year
monocentric retrospective cohort, 96 patients diagnosed with DLBCL who
had a serum electrophoresis (SEP) were included. Patients were divided
into the lowest (L)- and the highest (H)-TGLs (TGL ≤5.5 g/L and TGL
>5.5 g/L) subgroups and compared for outcomes, including
fatal infectious events. In our cohort, 12 (12.5%; 8 males; median age:
68 [55—82] years) exhibited L-TGL. There was no differences
regarding demographics, Ann-Arbor-lymphoma-stages, inflammatory
parameters or chemotherapy regimen between both groups. However, overall
(10/12, 83.3% versus 22/96, 26.2%; p=0.03) and infection-related death
rates (10/12, 83% versus 6/96, 6.2%; p<0.001) were
significantly higher in the L-TGL group. Conclusion: We demonstrate for
the first time the strong negative impact of L-TGL on overall and
infection-related mortality in DLBCL. Prospective studies should
distinguish DLBCL-related SIDs from preexisting humoral PIDs, using
biomolecular testing and post-treatment TGLs monitoring to determine the
best management strategy for infectious risk during DLBCL treatment in
L-TGL context.
Diabetes and Overweight/Obesity Are Independent, Nonadditive Risk Factors for In-Hospital Severity of COVID-19: An International, Multicenter Retrospective Meta-analysis
Authors: Longmore Danielle K. , Miller Jessica E. , Bekkering Siroon , Saner Christoph , Mifsud Edin , Zhu Yanshan , Saffery Richard , Nichol Alistair , Colditz Graham , Short Kirsty R. , Burgner David P. , consortium the International BMI-COVID
Published: April 2021

OBJECTIVE

Obesity is an established risk factor for severe coronavirus disease
2019 (COVID-19) but the contribution of overweight and/or diabetes remain
unclear. In a multi-center international study, we investigated if overweight,
obesity and diabetes were independently associated with COVID-19 severity, and
whether the body mass index (BMI)-associated risk was increased among those
with diabetes.

RESEARCH DESIGN & METHODS

We retrospectively extracted data from health care records and
regional databases of hospitalized adult patients with COVID-19 from 18 sites
in 11 countries. We used standardized definitions and analyses to generate
site-specific estimates, modelling the odds of each outcome (supplemental
oxygen/non-invasive ventilation, invasive mechanical ventilation, and
in-hospital mortality) by BMI category (reference, overweight, obese) adjusting
for age, sex, and pre-specified co-morbidities. Subgroup analysis was performed
on patients with pre-existing diabetes. Site-specific estimates were combined
in a meta-analysis.

RESULTS

Among 7244 patients (65.6%
overweight/obese), those with overweight were more likely to require
oxygen/non-invasive ventilation (random effects
adjusted odds ratio [aOR] 1.44 [95% CI 1.15-1.80]) and invasive mechanical ventilation (aOR 1.22 [CI 1.03-1.46]). There
was no association between overweight and in-hospital mortality (aOR 0.88 [CI 0.74-1.04]). Similar effects were observed in
patients with obesity or diabetes. In the subgroup analysis, the aOR for any
outcome was not additionally increased in those with diabetes and overweight or
obesity.

CONCLUSIONS

In adults hospitalized with COVID-19, overweight as well as obesity
and diabetes were associated with increased odds of respiratory support but not
mortality. In patients with diabetes, the odds of severe COVID-19 were not
increased above the BMI-associated risk.
Új technológiák a védelem szolgálatában : Interjú Palkovics László innovációs és technológiai miniszterrel
Authors: Bárány Zoltán
Published: April 2021

A Haditechnika folyóirat cikksorozatban mutatja be a védelmi iparág fejlesztését. Az első részben Palkovics László innovációs és technológiai minisztert kérdeztük a tárca katonai vonatkozású fejlesztéseiről, a készülő Védelmi Ipari Stratégiáról és a haditechnikai fejlesztéseket érintő változásokról. Az interjút Bárány Zoltán ezredes, a MH Transzformációs Parancsnokság parancsnokhelyettese készítette.