bluuebunny/crossref_metadata_2025 huggingface dataset:
MECHANICAL AND OPTICAL INVESTIGATION OF LASER WELDED STRUCTURAL STEEL - POLY(METHYL-METHACRYLATE) HYBRID JOINT STRUCTURES
Authors: Csizér Tamás , Temesi Tamás , Molnár László
Published: December 2019

Modern welding processes that can easily be automated (such as friction stir welding, laser welding and ultrasonic welding) are gaining popularity in joining metal-polymer hybrid structures. This field of science is intensively studied around the globe, as a dependable, productive joining method that directly produces structurally sound joints between a metal and a polymer structure could unleash unforeseen possibilities in the vehicle industry. In our experiments, we manufactured hybrid steel-poly(methyl-methacrylate) (PMMA) joints with laser welding, using the 2p design of experiment method. We measured the effect of cellulose reinforcing fibres (in varying weight percentages) on the transparency and weldability of the PMMA material and the effect of welding parameters on the mechanical properties of the joints. We also examined the vicinity of the welded seam with scanning electron microscopy.
COMPRESSIVE PROPERTIES OF AUXETIC STRUCTURES WITH CONTROLLED STIFFNESS OF STRUT JOINTS
Authors: Doktor Tomáš , Fíla Tomáš , Koudelka Petr , Kytýř Daniel , Jiroušek Ondřej
Published: December 2019

Presented paper deals with experimental study on compressive properties of auxetics with controlled stiffness of strut joints. The variable strut joints properties were simulated by adding extra amount of material in the struts’ intersection regions. Four groups of inverted honeycomb structures were prepared by multi-jet 3D printing and tested in quasi-static compression. The structure collapsed gradually, however after the first collapse, failure in entire cross-section occurred due to the brittle nature of the base material. The behavior up to the first collapse was consistent among the specimens within each group, while differed slightly subsequently. With higher reinforcement in the joints, results showed increasing stress at the first collapse (ultimate compressive stress) while the strain at the first collapse remained unchanged. The auxetic behaviour became less significant with increasing joints’ reinforcement.
NUMERICAL MODELLING OF WAVE SHAPES DURING SHPB MEASUREMENT
Authors: Dvořák Radim , Koudelka Petr , Fíla Tomáš
Published: December 2019

The paper aims at the numerical simulation of the wave propagation in compressive Split Hopkinson Pressure Bar (SHPB) experiment. The paper deals with principles of SHPB measurement, optimisation of a numerical model and techniques of pulse shaping. The parametric model of the typical SHPB configuration developed for LS-DYNA environment is introduced and optimised (in terms of element size and distribution) using the sensitivity study. Then, a parametric analysis of a geometric properties of the pulse shaper is carried out to reveal their influence on a shape of the incident pulse. The analysis is algorithmized including the pre- and post-processing routines to enable automated processing of numerical results and comparison with the experimental data. Results of the parametric analysis and the influence of geometric properties of the pulse shaper (diameter, length) on the incident wave are demonstrated.
SIMULATION AND OPTIMIZATION OF POROUS BONE-LIKE MICROSTRUCTURES WITH SPECIFIC MECHANICAL PROPERTIES
Authors: Wit Adrian , Wronski Sebastian , Tarasiuk Jacek
Published: December 2019

Bone trabecular structure can be characterized as a connected network of mineral bars and plates with unique mechanical properties. Standard methods of producing bone-like structures based on periodic structures or foams have same limitations. The organization of the trabecular bone (meso scale) is adapted to the values of stresses and strains aﬀecting the skeletal system. To simulate bone-like structure, the methodology of generating stochastic structure based on hyperuniform spatial points distribution is proposed. Statistical analysis of generated structure shows the possibility to generate clouds of points in wide range of random close packing density, up to 59.52%. Points connected by Voronoi tessellation produce to unique porous topology with no closed-cells and with wide range of connectivity. Manufacturing of a generated structure is only limited by used technique. The proposed algorithm was developed regardless of the manufacturing technique, however, same examples of the structure were printed using 3D addictive technology. The mechanical properties of developed structure are strongly dependent on the material from which they are made, but the modiﬁcation of the structure allows to change the strength in speciﬁc and controlled way.
Building for Students: School Design and Educational Priorities in Colonial Ghana
Authors: Ferrell Lacy S.
Published: December 2019

An often overlooked element of the history of schooling in colonial Africa is the role of the space of the school as an area where different understandings of education competed. This article examines how chiefs, students, teachers, and local residents in colonial Ghana mediated the experience and meaning of school through their own engagements with the physical environment and the standards imposed by the British. It does so through an exploration of the pedagogical implications of the school space, defined as the entire natural and built environment; the different meanings this space held for different people; and the effects of this space on constructing new identities and promoting new forms of behavior. With and in schools, Africans could challenge colonial power, not only in terms of what children learned and how they used their education, but also in how they, and their larger communities, interacted with the space of the school itself.
Quatro abordagens do cotidiano nos quadrinhos contemporâneos
Authors: Schneider Greice
Published: December 2019

Este artigo discute a crescente presença do cotidiano em quadrinhos contemporâneos, em que situações comuns e eventos aparentemente insignificantes tomam o lugar dos costumeiros mundos extraordinários e histórias de aventura. Com base em uma perspectiva francesa nessa área de estudos (Lefebvre e Blanchot), a dinâmica ambígua do cotidiano será investigada em relação aos conceitos contrastantes de tédio e estranheza, associadas aos gêneros narrativos drama e humor. O objetivo é compreender os quadrinhos que abordam o cotidiano sob óticas otimistas e pessimistas, identificando os trabalhos que lamentam a sua ordinariedade (humor derrisório, ennui) e diferem daqueles que o convertem em algo dotado de interesse (contemplação e comédia observacional).

Palavras-chave: cotidiano; quadrinhos; tédio.
Memória, história e identidade: o caso da “escola uspiana de história”
Authors: Fernandes Freire Diego José
Published: December 2019

Este artigo discute o texto “A escola uspiana de história”, de Maria Helena Rolim Capelato, Raquel Glezer e Vera Lucia Amaral Ferlini, publicado em 1994 na revista Estudos Avançados, a partir de uma articulação entre memória e identidade. Objetiva-se analisar a maneira como essas três historiadoras uspianas enunciaram uma identidade historiográfica em profunda ligação com uma memória disciplinar e institucional vinculada à Universidade de São Paulo, em especial à Faculdade de Filosofia, Letras e Ciências Humanas. Dividido em três grandes momentos, o trabalho relaciona ainda tal enunciação identitária com a historiografia brasileira das últimas décadas do século passado. Como uma identidade historiográfica uspiana foi produzida, escrita e enunciada? Eis a questão orientadora do artigo.

Palavras-chave: memória; identidade; historiografia brasileira.
A história e o audiovisual em tempos de ditadura
Authors: Archangelo Rodrigo
Published: December 2019

MORETTIN, Eduardo e NAPOLITANO, Marcos (orgs.). O cinema e as ditaduras militares: contextos, memórias e representações audiovisuais. São Paulo: Intermeios, 2018, 232 p.
Forms of nitrogen fertilizer application in Panicum maximum
Authors: Caldas Marilize Bittencourtt , Diniz Jéssica Pereira , Silva Andrisley Joaquim da , Baio Simone Pereira da Silva , Borges Monica Cristina Rezende Zuffo , Nogueira Kenio Batista , Roque Cassiano Garcia , Teodoro Paulo Eduardo
Published: December 2019

Nitrogen is one of the most important nutrients for increasing the yield and quality of forages. This study aimed to evaluate the effect of the different forms of application, spread on the total area using urea fertilizer and foliar using liquid urea, aiming at evaluating the yield and qualitative traits of Panicum maximum cv. Mombaça, at different times of the year. The experimental design was completely randomized blocks in subdivided plots, with three blocks, four treatments, and three collections. The treatments were applied in March 2015 and consisted of the following treatments: 1-control; 2-urea; 3-liquid urea; 4-urea + liquid urea; 5-urea + micronutrients; 6-urea + N liquid; 7-urea + N liquid + micronutrients; 8-control. Samples were collected in May, October, and December 2015. Crude protein (CP) dry matter (DM), mineral matter (MM), and acid detergent fiber (ADF) were evaluated. Results revealed that nitrogen was determinant in improving the yield and forage quality. Treatments with urea spread on total area resulted in increased dry matter production. For the crude protein, the source and the application form are not decisive. Collection time with higher rainfall positively affected the dry matter production, crude protein, and ADF, while urea spread on total area showed the best cost-benefit due to the good results of yield and quality.
Growth and biomass production of prickly pear in the second cycle irrigated with treated domestic sewage
Authors: Azevedo Junior Manoel Simões de , Ferreira Neto Miguel , Medeiros José Francismar de , Sá Francisco Vanies da Silva , Lima Yuri Bezerra de , Lemos Marcírio de , Queiroz Jorge Luís Fabrício de , Batista Rafael Oliveira
Published: December 2019

This study aimed to evaluate, in the second cycle, the growth and production of ‘Orelha-de-elefante Mexicana’ prickly pear (Opuntia sp.) under complementary irrigation with treated domestic sewage. The experiment was carried out in the Milagre Settlement, municipality of Apodi-RN, Brazil, from June 2016 to February 2017. Five treatments were evaluated, corresponding to four irrigation frequencies (2.3, 7.0, 14.0 and 21.0 days) to apply an effluent depth of 3.5 mm, and the control, rainfed cultivation (without irrigation). The experimental design was randomized blocks, with four replicates. After preliminary-primary treatment, the domestic sewage showed acceptable chemical and physical characteristics for fertigation under the conditions adopted in the prickly pear cultivation. 234 days after the 1st cut in the plants, the following morphometric characteristics were measured: plant height and length, width, perimeter, thickness and number of primary and secondary cladodes, and biomass accumulation. Complementary irrigation with treated domestic sewage effluent applied at intervals of 2.3, 7.0, 14.0 and 21.0 days allowed satisfactory growth and production of ‘Orelha-de-elefante Mexicana’ prickly pear; without irrigation, its development was substantially hampered during the dry period. Complementary irrigation with 3.5 mm of domestic sewage effluent applied at intervals of 2.3, 7.0 and 14.0 days led to highest growth and biomass accumulation in ‘Orelha-de-elefante Mexicana’ prickly pear.
Defoliation dynamics of Brachiaria brizantha pastures with distinct structural characteristics
Authors: Fernandes Patrick Bezerra , Barbosa Rodrigo Amorim , De Oliveira RaÍsa Turcato , De Oliveira Caio Vinicio Vargas , Medeiros-Neto Cauby de
Published: December 2019

Although belonging to the same species, different Brachiaria brizantha varieties used for pasture vary significantly in their morphological structure. Therefore, this study starts from the central hypothesis that the defoliation dynamics during the period of occupation by animals in pastures formed by Brachiaria brizantha under rotational stocking varies among cultivars during the year. The experimental design used was randomized blocks with three treatments and three repetitions, with the cultivars consisting of Brachiaria brizantha cv. Xaraés, BRS Paiaguás, and Ecótipo B4. The defoliation patterns during the grazing periods were estimated using the marked tiller technique. Despite alterations in the tiller and forage mass components in the wet and dry seasons, no variations were observed in the tiller defoliation dynamics and the respective structural components. In the wet season, the area grazed only once was greater for BRS Paiaguás compared to the other two cultivars, but the other areas representing the grazing horizons were equally exploited among the grass varieties during the year. Therefore, based on the defoliation dynamics of pastures in Brazil’s tropical climate, it is possible to suggest that pastures formed by grasses with different structures and growth habits can be submitted to similar management strategies without impairing the forage canopy exploitation by the animals.
Number and morphology of tiller age groups during summer in Marandu palisadegrass pastures previously used under deferred grazing
Authors: Santos Manoel Eduardo Rozalino , Carvalho Bruno Humberto Rezende , Carvalho Angélica Nunes de , Rocha Gabriel de Oliveira , Van Cleef Flávia de Oliveira Scarpino , Queiroz Gustavo Jordan da Silva , Moraes Lucas Santos de , Carmo Larissa Lais Santos do
Published: December 2019

The relative contribution of young, mature and old tillers in the canopy influences the production and structure of the pasture. The objective with this work was to evaluate the balance between tiller appearance and tiller death (BAL) during spring and early summer, the morphology and percentages of young, mature and old tillers in Brachiaria brizantha cv. Marandu (marandu palisadegrass) with three conditions in late winter: short (24.1 cm), tall (49.0 cm) and tall (50.0 cm)/mown (8 cm). Tall and tall/mown pastures presented higher BAL in September and October, respectively. In January, BAL was higher in short and tall/mown pastures than in tall pasture. The tiller number was higher in short pasture, intermediate in tall/mown pasture and lower in tall pasture. The percentage of old tillers was higher in short and tall pastures compared to tall/mown pasture. The percentage of live leaf lamina reduced, while the percentage of dead leaf lamina increased with tiller age. Mowing of the tall marandu palisadegrass pasture in late winter increases the renewal of tillers in the spring and decreases the percentage of old tillers in the summer. The old tillers present worse morphology than young tillers.
Chemical change during storage of crambe cultivated with application of plant growth regulators
Authors: Boiago Nayara Parisoto , Coelho Silvia Renata Machado , Paz Carlos Henrique de Oliveira , Christ Divair
Published: December 2019

This study aimed to characterize the chemical composition of crambe grains produced with plant growth regulators in the 2014 and 2015 harvests and stored for 180 days. During crambe cultivation, two foliar sprayings were carried out with the following treatments: 1) control treatment with distilled water; 2) indole-3-acetic acid 100 mg L-1 (IAA); 3) 3-gibberellic acid P.A. 100 mg L-1 (GA3); 4) Stimulate®. After harvesting, the grains were analyzed initially and after 180 days of uncontrolled storage. We checked water content, lipids in hot extraction (HE), lipids in cold extraction (CE), proteins, acidity and antioxidant activity. The Tukey test was used to compare the averages (p<0.05) and the parameters were grouped using a multivariate clustering technique presented in dendogram. The CE and HE lipid contents were reduced after storage, whereas the protein content and antioxidant activity of the grains were not altered by storage. However, the grains that received IAA application showed an increase in the CE lipid content and their preservation after storage. GA3 application, on the other hand, reduced the protein content. Lipid contents remained constant at the end of storage, and the acidity was reduced due to the application of GA3 and Stimulate® plant growth regulators. The 180-day storage changed crambe quality and regulators can assist in preserving grain quality during storage. The CE and HE lipid content and the grain acidity were good indicators for evaluating effects.
Identificação e Extração Automática de Indivíduos de Ipê-Amarelo em Imagens Obtidas por VANT
Authors: De Oliveira Willian Vieira , Da Silva Claudionor Ribeiro
Published: December 2019

O processamento digital de imagens (PDI) representa um conjunto de técnicas que permite não apenas o tratamento de imagens, mas também proporciona uma maior facilidade na extração, análise e interpretação de informações contidas em imagens aéreas. Com o surgimento de Veículos Aéreos Não Tripulados (VANTs) ganhos significativos foram observados em termos de resolução espacial e temporal. Imagens adquiridas por VANT podem ser utilizadas em diversas atividades, como aquelas voltadas à conservação ambiental, como por exemplo, no monitoramento de indivíduos arbóreos protegidos por Lei ou em extinção, proporcionando maior controle das alterações ocorridas ao longo do tempo, em áreas de preservação. Dessa forma, é proposto nesse estudo a aplicação de técnicas de PDI em imagens VANT para detectar, extrair e espacializar indivíduos de espécies de Ipê-Amarelo. A metodologia contempla o desenvolvimento de rotinas computacionais, utilizando a linguagem Python, faz uso do classificador por máxima verossimilhança e de técnicas de morfologia matemática. Como resultados finais são obtidas as coordenadas geográficas dos indivíduos detectados nas imagens. Os resultados evidenciaram coerência com a realidade e mostraram que o algoritmo pode ser aplicado para fins ambientais, uma vez que este simplifica a organização do modo de trabalho na solução de problemas ambientais que envolvam a localização de espécies florestais para seu manejo e/ou controle.
Análise da Influência do Valor de Densidade na Estimativa do Modelo Geoidal Local para o Distrito Federal, Brasil
Authors: Marotta Giuliano , Almeida Yellinson , Chuerubim Maria Lígia
Published: December 2019

O modelo geoidal é parte fundamental na transformação entre as altitudes geométricas e ortométricas, e ganhou mais importância com a popularização de técnicas de posicionamento por GNSS. No entanto, para simplificar, verifica-se que um valor de densidade médio da crosta ainda vem sendo aplicado nos procedimentos de cálculo. Por este motivo, este trabalho buscou analisar a influência do valor de densidade adotado na estimativa de um modelo geoidal. Para isto foram estimados valores fixo e variáveis de densidade para a área de estudos, por meio de dados gravimétricos e de litologia. Estes valores foram utilizados no cálculo de variáveis associadas aos valores de densidade e foram comparados e analisados do ponto de vista estatístico. Como resultado, foi possível verificar pequenas diferenças ao utilizar diferentes valores de densidade. Foi, também, possível identificar diferenças significativas, estatisticamente, em alguns dos resultados alcançados. Por consequência, foi possível sugerir que o uso de valores de densidade variável pode proporcionar maior rigor ao desenvolvimento de modelos geoidais de maneira geral.
Un mundo en tus manos: la metodología detrás de la educación para la ciudadanía global de Entreculturas
Authors: Krüger Ruiz Veda
Published: December 2019

El artículo introduce la propuesta pedagógica de Entreculturas para construir una ciudadanía global desde la educación. Un mundo en tus manos es la metodología que se ha ido construyendo en los últimos años a través de la participación juvenil, del trabajo en red entre comunidades educativas y del encuentro entre personas comprometidas con sus entornos locales y globales. Esta metodología propone herramientas concretas y una apuesta por la educación para la ciudadanía global como derecho y estrategia esencial para transformar el mundo.
Construyendo ciudadanía a través de la coeducación
Authors: Maeztu Gomar Clara
Published: December 2019

Este artículo aborda la centralidad del compromiso con la igualdad de género en cualquier proceso de educación transformadora y para la ciudadanía global. Fundamentada su importancia, analiza cómo integrar este compromiso de forma transversal en los procesos educativos a través de la coeducación. Para ello, establece qué entendemos por coeducación y ofrece pautas claras sobre cómo integrar este enfoque desde los diferentes tipos de currículos y ejes educativos de cualquier centro o espacio socioeducativo.
Pedagogía del encuentro para una ciudadanía global
Authors: Villanueva Daniel
Published: December 2019

Hay muchos lugares, personas, realidades de las que no sabemos nada. Personas que no nos importan porque no están en el círculo de nuestra gente. Realidades injustas de las que no nos sentimos responsables porque nos son ajenas. La conciencia de ciudadanía global se adquiere abriéndonos al encuentro, estableciendo lazos y relaciones con aquello que no experimentamos directamente de forma ordinaria. Por ello, una pedagogía del encuentro transformador es esencial en la educación de esa conciencia global.
Inégalités salariales dans les pays européens. Concepts, mesures et niveaux d’analyses - F. Ghesquière, 2017
Authors: Colombi Denis
Published: December 2019

Recensé : François Ghesquière, Inégalités salariales dans les pays européens. Concepts, mesures et niveaux d'analyses, Bruxelles, Éditions de l'Université de Bruxelles, 2017 (« Sociologie et anthropologie »), 272 p.
Chromosome doubling in Cattleya tigrina A. Rich
Authors: Menezes-Sá Thays Saynara Alves , Arrigoni-Blank Maria de Fátima , Santos da Costa Andréa , Santos-Serejo Janay de Almeida , Fitzgerald Blank Arie , Alves Soares Caroline , Santos Moura Giulia Millena
Published: December 2019

Chromosome doubling induction in orchids may benefit their production for resulting in flowers of higher commercial value, larger size and higher content of substances that intensify the color and fragrance when compared with diploid orchids. This work aimed to induce and confirm artificial polyploidization, using flow cytometry and stomatal analysis. Explants were treated with colchicine at concentrations of 0, 2.5, 7.5, and 12.5 mM, for 24 and 48 hours and with oryzalin, at concentrations of 0, 10, 30, and 50 μM, for three and six days. For the flow cytometric analysis, a sample of leaf tissue was removed from each plant, crushed to release the nuclei and stained with propidium iodide. In addition to flow cytometry, the ploidy of the antimitotic treated plants was evaluated by stomata analysis. Young leaves were used where the density, functionality and stomatal index were evaluated. Colchicine provided induction of satisfactory polyploidy in C. tigrina at all concentrations and times of exposure, obtaining a greater number of polyploid individuals in the concentration of 12.5 mM for 48 hours. Oryzalin did not induce chromosome duplication at the tested concentrations.
Crescimento e qualidade de mudas de cedro (Cedrela fissilis L.) em função do substrato e sombreamento
Authors: Gomes Artur Diego Vieira , Freire Antonio Lucineudo Oliveira
Published: December 2019

Este trabalho teve como objetivo avaliar o crescimento inicial e a qualidade de mudas de cedro em função de diferentes substratos e de níveis de sombreamento. O experimento foi distribuído em delineamento inteiramente casualizado, esquema fatorial 3 x 5, com três níveis sombreamento e cinco substratos, com cinco repetições e quatro plantas por unidade amostral. As plantas foram mantidas a 0% (sol pleno), 50% e 70% de sombreamento e os substratos utilizados foram uma mistura de solo (S), pó de coco (PC), casca de arroz carbonizada (CA), rejeito de vermiculita (RV) e esterco bovino (EB) em proporções variadas, formando quatro combinações de substratos [SEB (S70% + EB30%); SCAEB (S70% + CA15% + EB 15%); SPCEB (S70% + PC15% + EB15%) e SRVEB (S70% + RV15% + EB15%)], mais um substrato comercial Plantmax® (PLX). O sombreamento 70%, independente do substrato empregado, proporcionou os maiores valores de altura de plantas, diâmetro do coleto, área foliar e massa seca das mudas. O cultivo a sol pleno influenciou negativamente o crescimento e a qualidade das mudas, os quais foram favorecidos pelo nível de 50% de luminosidade, nos substratos SCAEB, SPCEB, SEB e PLX, por apresentar maior valor de IQD. A utilização de casca de arroz carbonizada, pó de coco e rejeito de vermiculita tem potencial para serem usados na composição de substratos para produção de mudas de C. fissilis L., em adição ao solo e esterco bovino.
Etnobotânica de plantas tóxicas como subsídio para campanhas de prevenção de acidentes: um estudo de caso em Cananéia, São Paulo, Brasil.
Authors: Oler Juliana Rodrigues Larrosa , Amorozo Maria Christina de Mello , Monteiro Reinaldo , Butturi-Gomes Davi
Published: December 2019

Para a diminuição dos casos de acidentes com plantas tóxicas, é necessário ampliar o conhecimento da população sobre as plantas. Campanhas informativas mostram-se como as melhores maneiras de diminuir os casos de intoxicação. Este trabalho teve por objetivo fazer um levantamento etnobotânico com os moradores do município de Cananéia-SP sobre as plantas tóxicas conhecidas e identificar áreas prioritárias para ações de conscientização e prevenção de acidentes. O município foi dividido considerando sua porção insular (bairros urbanos) e a parte continental (bairros rurais), a amostra definida pelo método “bola de neve” e entrevistas semiestruturadas foram realizadas.  Não há diferença significativa entre a diversidade de plantas tóxicas conhecidas nas porções insulares e continentais. As duas áreas apresentaram alta diversidade de etnoespécies conhecidas, e também baixa similaridade, indicando a necessidade de ações específicas, com foco em espécies ornamentais para as áreas insular e continental do município, adicionado das nativas para a última.
Etnobotânica de Parahancornia fasciculata (Apocynaceae): extração, usos e comercialização do leite de amapá na comunidade da ilha Trambioca, Barcarena, Pará, Brasil
Authors: De Sousa Ronaldo Lopes , Costa José Francisco da Silva , Costa Jeferson Miranda , Pereira Maria das Graças da Silva , Cordeiro Yvens Ely Martins
Published: December 2019

A espécie Parahancornia fasciculata produz um exsudato medicinal na forma de látex, denominado leite de amapá amargoso, bastante utilizado na Amazônia brasileira por suas propriedades medicinais. O presente trabalho teve como objetivo estudar as formas de extração, os usos e a comercialização do leite de amapá na comunidade da ilha Trambioca, Barcarena-PA. Os colaboradores foram selecionados por uma abordagem não probabilística “bola de neve”. A extração do leite de amapá pelos moradores da ilha Trambioca é exercida por homens com idade entre 39 a 76 anos e a cadeia de extração, consumo e comercialização do leite de amapá na ilha envolve o extrator, o atravessador e os consumidores local e externo. Os consumidores do exsudato obtido do amapazeiro abrangeram todas as faixas etárias entrevistadas, mais da metade (64%) tinham renda de até dois salários mínimos e tomaram o leite de amapá devido a facilidade de conseguir o produto e por ser natural. O látex de amapá possui propriedades farmacológicas para o tratamento de doenças que afetam o sistema respiratório e fraqueza física.
Maxillary Sinus Mucocele As an Unusual Complication of Orthognathic Surgery: Case Report
Authors: Demirbaş Ahmet Emin , Topan Cihan , Yılmaz Gökhan , Alkan Alper
Published: December 2019

Mucoceles
of the paranasal sinuses are benign cystic formations lined by epithelium which
show local enlargement with mucus collection. These lesions are usually seen in
the frontal sinus, rarely in the ethmoid and maxillary sinus. It is
believed to develop after the obstruction of the sinus ostium due to chronic
sinusitis, polyps, bone tumours, previous trauma and allergic rhinitis.
Maxillary sinus mucoceles are rarely seen after surgical operations and has
harmful effects on neighboring structures. In this case report, we present a
maxillary sinus mucocele which was developed after orthognathic surgery with
its surgical treatment and postoperative follow-up.Keywords: Maxillary sinus mucocele; orthognathic
surgery; ostium.
Piknodizostozisin Klinik ve Radyolojik Özellikleri: Olgu Raporu
Authors: ÇİTİR Mesude , ZENGİN Ayşe Zeynep
Published: December 2019

Amaç: Bu makalenin amacı hastalığın karakteristik
orofasiyal bulgularını tanımlayan bir piknodisostoz vakasını bildirmektirGereç ve Yöntemler:16 yaşında erkek hasta dişlerindeki çapraşıklık
nedeniyle kliniğimize başvurdu. Klinik muayenede kısa boy, hipertelorizm, gaga
burun, frontal şişlik, mandibular retrognati, tombul el ve oluklu damak
görüldü. Radyografik muayenede ise gonial açıda artma, kondil boynunda uzama ve
kemik dansitesinde artma görüldü.Bulgular:Sonuçlar: Piknodizostozisli hastalarda osteomyelit riski yüksek
olduğu için cerrahi işlemler öncesi bu durum gözönünde bulundurulmalıdırAnahtar Kelimeler:Gelişimsel kemik hastalığı, görüntüleme özellikleri,
piknodisostozis,
Dinamik Yükleme Yapılan Kısa İmplantlarda Kron/İmplant Oranının Stres Dağılımına Etkisinin İncelenmesi
Authors: ÇELİK Ersan , ÖZDEN A. Nehir
Published: December 2019

Amaç: Bu çalışmanın amacı farklı kron/implant oranına
sahip kısa implantlar üzerine uygulanan statik ve dinamik yüklerin implantı
çevreleyen kemik doku ve implantta meydana getirdiği stresin sonlu elemanlar
stres analiz yöntemiyle incelenmesidir. Gereç ve Yöntemler: Çalışmada, 4.1 mm çapında ve üç farklı uzunlukta
(6 mm, 8 mm ve 10 mm) toplam 3 adet dental implant seçilmiştir. Bu üç implantın
üzerine kron/implant oranı 1/1, 1.5/1 ve 2/1 olacak şekilde üçer adet alt
birinci molar metal destekli seramik kron bilgisayar ortamında tasarlanmış ve
implant destekli kronlar yine bilgisayar ortamında mandibula modeline
yerleştirilerek toplam 9 adet çalışma modeli elde edilmiştir. Elde edilen bu
modellere, vertikal ve oblik fonksiyonel kuvvetler uygulanarak, kortikal ve
spongioz kemikte oluşan maksimum ve minimum asal stres değerlerine, implantta
oluşan Von Mises stres değerlerine, implantlarda meydana gelen yorulma
değerlerine kron/implant oranının etkisi üç boyutlu sonlu elemanlar stres
analiz yöntemiyle incelenmiştir.Bulgular: Aynı miktarda kuvvet uygulanmasına rağmen, oblik
yükleme yapılan modellerde dik yükleme yapılan modellere oranla implant
sistemini oluşturan parçalarda ve kemik dokuda stres seviyelerinde belirgin bir
artış olmuştur. Tüm modellerde, kron/implant oranındaki artış implant sistemini
oluşturan parçalarda ve kemik dokuda stres seviyelerinde belirgin bir artışa
neden olmuştur.Sonuçlar: Bu çalışmanın limitleri dahilinde elde edilen
sayısal değerler, kron/implant oranının yük transfer mekanizmalarını ve
implantların klinik başarı sürelerini etkilediğini göstermiştir. Mandibular
molar bölgede tek diş eksikliklerinde uygulanacak implant tedavisinde 1/1
kron/implant oranının diğer oranlara göre daha iyi sonuçlar verdiği tespit
edilmiştir. Kron/implant oranındaki artış stres miktarlarının artmasına ve
implantların klinik başarı sürelerinin kısalmasına neden olmuştur.Anahtar Kelimeler: Dinamik yükleme, kısa implant, kron/implant
oranı, sonlu eleman stres analizi
EVALUATION OF KNOWLEDGE LEVEL AND APPROACHES IN TRAUMATIC DENTAL INJURIES AMONG DIFFERENT MEDICAL OCCUPATIONAL GROUPS
Authors: ÖZALP Şerife , ÖZBULUR Ayşenur
Published: December 2019

Background:Proper diagnosis and first intervention in dental trauma is of importance in terms of prognosis. The level of knowledge of pediatricians, emergency medicine physicians and dentists constitutes the most important step in carrying out this intervention. The aim of this study was to determine the level of knowledge of pediatricians, pediatric residents, emergency medicine specialists and dentists on dental traumas.Methods:A total of 103 people participated in this survey study conducted on pediatricians, emergency physicians and dentists serving in 10 different hospitals in Istanbul, and a survey including fourteen multiple-choice questions was prepared to determine the level of knowledge on the basic issues that are important for emergency intervention in trauma cases.Results:Of the participants, 55 % stated that the first aid training they received included dental trauma intervention, and 89 % answered the question of "Have you have ever encountered any dental trauma?" as "Yes". Particularly in avulsion cases, the knowledge level of the participants was found to be low in terms of treatment procedures related to tooth replacement.Conclusions:In this study, the knowledge of pediatricians, emergency physicians and dentists on dental trauma was evaluated, and according to the results of this survey, it was concluded that the issue of emergency interventions in dental traumas should be more emphasized in the training of these occupational groups.Keywords:Trauma, child, emergency treatment, dentistry
Farklı üretim teknikleri ile elde edilen Cr-Co metal-seramik örneklerin bağlanma dayanımının değerlendirilmesi
Authors: DEMİR Necla , KARCI Muhammet
Published: December 2019

Amaç: Dört farklı
üretim tekniği (döküm, tekrarlanan döküm, CAD-CAM ve seçici lazer sinterleme)
ile elde edilen Cr-Co metal seramik örneklerin (n:10) farklı pH ortamlarındaki
(pH:2.3 ve pH:6.5) yapay tükrükte farklı bekletme süreleri sonundaki bağlanma
dayanımını değerlendirmektir.Gereç ve Yöntemler:Bu çalışmada 4
grupta toplam 200 Cr-Co metal seramik örnek 4 farklı teknik (döküm, tekrarlanan döküm,
CAD-CAM ve seçici lazer sinterleme) ile hazırlanmıştır. Ayrıca SEM analizinde
kontrol grubu olarak kullanılmak üzere Cr-Co metal alaşım örneklerinden 1’er
adet her grup için üretilmiştir. Örnek sayısı her bir grup için n=10 olarak
belirlenmiştir. Metal seramik örneklerin iki farklı pH ortamındaki (pH 2.3 ve
pH 6.5)  yapay tükrükte 15 ve 30 gün
bekletilme sonrası makaslama bağlanma dayanımı ölçülmüştür. Her gruptan birer
örnek taramalı elektron mikroskobu (SEM) analizi ile yüzey değişikliği ve
kırılma morfolojisi açısından değerlendirilmiştir. Bulgular:Bağlanma dayanımı bakımından seçici
lazer sinterleme tekniği CAD-CAM ve tekrarlanan döküm tekniğinden daha iyi
bulunmuştur. En yüksek bağlanma dayanımı değerini döküm tekniği göstermiştir. 2.3
pH değerinde daha düşük bağlanma dayanımı bulunmuştur. Her iki pH değerinde de 30
günlük bekletme süresinde, 15 günlük bekletme süresine göre daha düşük bağlanma
dayanımı sonuçları bulunmuştur.Sonuçlar:Döküm
tekniği ilk tercih olmakla birlikte; seçici lazer eritme tekniği, CAD-CAM
tekniğine kıyasla bağlanma dayanımı bakımından tercih edilebilir. Ortamın
asiditesinin bekletme süresiyle doğru orantılı olarak materyalin direncini
azalttığı sonucuna ulaşılabilir. Bu nedenle ani pH değişimlerine karşı
metal-porselen ekspoz alanlarının ağızda bekletilmemesi gerektiği
düşünülebilir.Anahtar Kelimeler:Seçici lazer sinterleme, metal-ceramic, iyon salınımı, CAD/CAM,
bağlanma dayanımı.
Design, simulation and construction of a pellets transportation laboratory
Authors: Flórez-Ruiz Juan Fernando , Díaz-Rodríguez Jorge Guillermo , Ramírez-Dueñes Alexander , Pérez-Rondón Félix Antonio
Published: December 2019

The article presents how three scaled down industrial machinery models were designed and built as an educational tool to present the transport of particulate material. The literature review showed calculation models for equipment at industrial level, not for laboratory level. There were chosen the most representative means of commercial transport for particulate materials: a conveyor screw, a conveyor belt and a bucket elevator. These three machines were calculated and built in polycarbonate to allow visualization of their internal functioning. The three devices are controlled by a programmable logic controller (PLC) and connected to each other by a SCADA network. The equipment is modular so as not to alter the order of operation, being able to obtain different work sequences. In addition, a man-machine graphic interface (HMI) was developed to supervise and to control the designed equipment. The results of particulate material mass flow obtained are approximately coincident with those estimated, validating the use of calculation models for much lower levels of work. Finally, it is emphasized that the system obtained is an environment for students to implement control techniques using the sensors and motors used in the designs.
Graphene reinforced aluminum matrix composite obtaining by powder metallurgy
Authors: Bolaños-Bernal Sergio Esteban , Angarita-Moncaleano Irma
Published: December 2019

Several researchers have reported graphene as an ideal reinforcement for composite materials due to its interesting properties [1]. The graphene-reinforced aluminium matrix composite material was obtaining by powder metallurgy. This study investigated the effect of aluminum powder morphology on compaction capacity and mechanical strength of composite material. Different milling times were used to determine the optimal time required in manufacturing. The proper compaction load was determined change its values and analyzing the effect of the different loads on the characteristics of the composite. Sintering parameters were established according to previous studies employed by other researchers. Finally, it is determined that with 0.5% wt graphene presents phenomena of grain refinement and higher electrical conductivity of the compound with respect to powder metallurgical aluminum.
The role of secondary school in the training of women skilled personnel of Katerynoslav province in the II half of the XIX – early XX centuries
Authors: Добровольська В. А.
Published: December 2019

The point of this study is to cover the issue of history of women’s secondary education in Katerynoslavprovince in the 2nd half of the XIX – early XX centuries. Patriarchal judgments and views on the women’srole have been characteristic of the society of the Russian Empire for centuries. It has been found out thatthe democratic reforms of the 60-70s of the XIX century marked the beginning of the changes towardswomanhood. The historical premises for the formation of the women’s education system are covered. Itis established that the creation of women’s educational institutions of all classes in terms of legislativeframework begins in the 1950’s. Women’s educational institutions were subordinate to different institutionsand had different organizational and educational backgrounds. Thus, the Ministry of Public Education hadthe most rights and opportunities in the sphere of education. In addition to state schools, there were privateand public schools. It is established that the new system of educational sector management is claimed asstate-public. The main types of general secondary schools in Katerynoslav province in the II half of theXIX – early XX centuries were gymnasiums, progymnasiums, parochial secondary school for girls. Thefeatures of the financial situation of the gymnasiums on the example of certain educational institutions arerevealed. Thus, a large number of women’s gymnasiums and progymnasiums and their popularity withthe population were directly related to the rapid economic development of the region and the vigorousactivity of local self-government bodies. The content of education of those secondary schools is defined.The popularity of gymnasiums with the population comes from their class-inclusive nature. The range ofwomen’s gymnasiums in the early XX century is distinguished on grounds of division into classes andreligion. Education for daughters of clergymen was of a limited nature compared to the gymnasiums. As aresult, women’s religious secondary education evolved less dynamically. It is established that the religiousaffairs authority opened professional secondary educational institutions – parochial secondary school forgirls – primarily for the daughters of clergymen. There was only one such school in Katerynoslav province– in the principal town of the province. The content of the education of parochial secondary school forgirls is described. The proportion of disciplines of the humanities and mathematical and natural sciences iscompared. The article states that the end of the XIX - early XX centuries was marked by the decline in thesystem of parochial secondary school for girls, and defines the content of the reforms of the religious affairsauthority. The sources of funding of Katerynoslav parochial secondary school for girls and gymnasiums arecompared. The role of parochial secondary school for girls in the problem of providing public school withteachers is figured out.
Sacred as a condition
Authors: Мурашкін М. Г.
Published: December 2019

The article deals with the phenomenon of the sacred as a certain condition of man, a conditioninherent in human nature. The sacred is considered in a circle of such categories and concepts as themystical state, the state of the artist, transcendence, silence, altarity. The sacred is understood as asense of mysterious power. But it has been observed that this power is constantly associated with theDivine. The connection with the transcendental is also fixed. Because of transcendence, communicationwith a certain state of a person, a trans state, is noticed. But it is not considered any trance, but acompensatory one. After all, the compensatory trance is appreciated by man because it compensates forthe disadvantages. Therefore, for a person this type of trance is sacred. It is also sacred because one feelsa mysterious power and an absolute ferocious fearlessness. Compensatory trance as a sacred, sacred,person associates with a certain religious tradition. With a tradition of Hinduism, Buddhism, Christianityor Mo-Sulmanism. But the compensatory trance as sacred is real. This is not a simple mythologicalprojection, which is referred to as God. This is the real state of the human spirit. The sacred is the stateof the human spirit, when it manages the most co-combat, the most possesses itself. Owning yourselfis a rational moment in a person’s life. Upon receiving the opportunity to possess oneself, a personundergoes the transformation of their states, among which one can record the Higher state, the state ofthe sacred. In the case of the sacred, it is a compensatory trance. The features of this compensatory tranceare conveyed by my own means in my own work, a mystic, an artist, a religious figure. Compensatorytrance can have a manifestation in the human melon and beyond all mysticism. But what is sacred whenit is outside religion and mysticism? For man, it is sacred because it compensates for the shortcomingsand makes life easier.
"Retrato de família": poema em preto e branco
Authors: Santos Ana Claudia Costa dos
Published: December 2019

Este artigo relata o processo de criação do poema “Retrato de família”, que integra uma dissertação de mestrado em Escrita Criativa. Além de comentar diversos detalhes da gênese do poema, sobretudo no que tange à tentativa de recriação de um retrato antigo, a autora discute as relações do texto em questão com a passagem do tempo, a epifania e a fotografia. Desse modo, o artigo busca contribuir não apenas para os estudos sobre criação poética, mas também para a reflexão acerca do fértil diálogo entre diferentes técnicas ou artes – neste caso, entre poesia e fotografia.
Las Bibliotecas públicas como promotoras del envejecimiento activo saludable
Authors: Gil Calderón Marcela , Chaves Salgado Lorena , Bonilla Carrión Roger
Published: December 2019

Las bibliotecas públicas son por excelencia, las organizaciones que reciben y trabajan con la población adulta mayor. Se presenta un proyecto desarrollado en la Escuela de Bibliotecología y Ciencias de la Información, de la Universidad de Costa Rica, cuyo objetivo general fue desarrollar estrategias lúdico-creativas, para promover la alfabetización informacional en salud en la población adulta y adulta mayor, desde las bibliotecas públicas. Es una investigación cualitativa, en que se aplicó la investigación acción. Los resultados alcanzados muestran que después de la aplicación de talleres lúdico-creativos, las personas adultas mayores aumentaron su conocimiento, interés y destreza en ellos. Así mismo se logró fomentar las relaciones intergeneracionales, pues los talleres fueron desarrollados por estudiantes de Trabajo Comunal Universitario.
Bibliotecas digitais e virtuais à luz da literatura brasileira: da construção ao acesso
Authors: Santa Anna Jorge , Da Consolação Dias Célia
Published: December 2019

Os reflexos das tecnologias da informação e comunicação nas bibliotecas é tema recorrente na literatura da área de Biblioteconomia e Ciência da Informação. Este artigo constitui uma revisão de literatura sobre o tema “Bibliotecas Digitais” e “Bibliotecas Virtuais”, haja vista verificar os principais assuntos discorridos na literatura, por conseguinte, apresentar aspectos quantitativos que caracterizam a produção científica sobre o tema. A pesquisa é descritiva, qualiquantitativa e foram selecionados artigos da Base de Dados de Periódicos em Ciência da Informação, SciELO e Portal de Periódicos CAPES, publicados em português, de 2010 a 2014, mediante a técnica de coleta do tipo levantamento e análise de conteúdo. Os procedimentos realizados no estudo permitiram a identificação de 21 artigos que contemplam diferentes assuntos relacionados ao tema: estruturação das bibliotecas, produtos e serviços oferecidos,  educação e formação, e acesso e usabilidade da biblioteca. Os dados quantitativos analisados demonstraram haver preferência pelo termo “Bibliotecas Digitais” ao termo “Bibliotecas Virtuais”, com predominância dos assuntos “estruturação de bibliotecas” e “acesso e usabilidade”. Os trabalhos foram publicados de forma equilibrada, ao longo dos anos, predomínio da autoria coletiva, e houve distribuição uniforme entre boa parte dos periódicos brasileiros da Ciência da Informação/Biblioteconomia. Como principal limitação, destaca-se o uso de artigos em português, o que instiga a realização de estudos futuros em artigos publicados em inglês e espanhol, e delimitando o tempo para anos mais recentes.
Factores que influyen en la duración de la lactancia materna en las estudiantes universitarias
Authors: Castillo Ramirez Marisol , Canales Madrigal Jennifer , Alpízar Campos María José , Moreira Álvarez Rodolfo Darío
Published: December 2019

Las estudiantes universitarias que amamantan enfrentan retos en relación con el complimiento de diferentes roles, motivo por el que este estudio trató de determinar los factores que influyen en la duración de la lactancia materna en esta población. Este artículo corresponde a una investigación cualitativa de tipo descriptivo, con una población de  diez estudiantes universitarias que amamantaban a sus hijos e hijas. Para la recolección de datos se utilizó la entrevista semiestructurada y el análisis se realizó triangulando los datos obtenidos, la teoría de I. King y los aportes de los investigadores. Los resultados señalaron que las estudiantes universitarias perciben que la lactancia materna es un derecho, un beneficio, y el mejor alimento que pueden brindarle a sus hijos e hijas. La familia o amigos generalmente son los que plantean la idea de abandonar la lactancia materna, además el entorno familiar influye directamente en la duración de la lactancia materna.Se concluye que el éxito en la lactancia de las estudiantes universitarias madres va estar influenciado por diferentes factores tantos personales, interpersonales y sociales que son dinámicos y que se relacionan entre sí, además de las redes de apoyo, educación en salud, acompañamiento y la acciones en pro de la lactancia materna de la  institución universitaria y de sus propios entornos familiares.