bluuebunny/crossref_metadata_2025 huggingface dataset:
In silico prediction of the functional and structural consequences of the non-synonymous single nucleotide polymorphism A122V in bovine CXC chemokine receptor type 1
Authors: Guzzi A. F. , Oliveira F. S. L. , Amaro M. M. S. , Tavares-Filho P. F. , Gabriel J. E.
Published: April 2019

Abstract The current study aimed to assess whether the A122V causal polymorphism promotes alterations in the functional and structural proprieties of the CXC chemokine receptor type 1 protein (CXCR1) of cattle Bos taurus by in silico analyses. Two amino acid sequences of bovine CXCR1 was selected from database UniProtKB/Swiss-Prot: a) non-polymorphic sequence (A7KWG0) with alanine (A) at position 122, and b) polymorphic sequence harboring the A122V polymorphism, substituting alanine by valine (V) at same position. CXCR1 sequences were submitted as input to different Bioinformatics’ tools to examine the effects of this polymorphism on functional and structural stabilities, to predict eventual alterations in the 3-D structural modeling, and to estimate the quality and accuracy of the predictive models. The A122V polymorphism exerted tolerable and non-deleterious effects on the polymorphic CXCR1, and the predictive structural model for polymorphic CXCR1 revealed an alpha helix spatial structure typical of a receptor transmembrane polypeptide. Although higher variations in the distances between pairs of amino acid residues at target-positions are detected in the polymorphic CXCR1 protein, more than 97% of the amino acid residues in both models were located in favored and allowed conformational regions in Ramachandran plots. Evidences has supported that the A122V polymorphism in the CXCR1 protein is associated with increased clinical mastitis incidence in dairy cows. Thus, the findings described herein prove that the replacement of the alanine by valine amino acids provokes local conformational changes in the A122V-harboring CXCR1 protein, which could directly affect its post-translational folding mechanisms and biological functionality.
Records of breeding in Wilson’s Plover Charadrius wilsonia with new localities for Brazil
Authors: Andrade L. P. , Lyra-Neves R. M. , Andrade H. M. L. S. , Albuquerque U. P. , Siqueira A. J. S. , Guzzi A. , Telino-Júnior W. R.
Published: April 2019

Abstract Wilson’s Plover, Charadrius wilsonia, is widely distributed in coastal areas of the Americas. This report presents the first record of breeding in this species on Coroa do Avião Island, on the coast of Pernambuco, and in the estuary of the Cardoso and Camurupim rivers, on the coast of Piauí, in northeastern Brazil, extending the known area of reproduction of this species in this region. One breeding pair was observed on October 29th 2014 on Coroa do Avião Island, and a second pair was recorded on April 6th 2016 in the Cardoso/Camurupim estuary on the Piauí coast. Both the male and the female contributed to the incubation of the eggs. The nest on Coroa do Avião island was camouflaged by the local vegetation, but despite this, the eggs were attacked by a predator. Possible predators observed on the island included Caracara plancus and domestic cats and dogs.
A methodological proposal for the analysis of Cladocera (Crustacea, Branchiopoda) subfossils from sediments of temporary aquatic ecosystems
Authors: Silva E. E. , Cassino R. , Leibowitz Z. W. , Eskinazi-Sant’Anna E. M.
Published: April 2019

Abstract The main objective of the present study was to promote some adaptations to the standard methodology used in the analysis of Cladocera subfossils. The samples used in this study were collected at Lagoa dos Coutos, a temporary lake located on an outcrop with iron-rich duricrust in the Serra do Gandarela (Minas Gerais, Brazil). The sediment from this pond, typical of temporary ecosystems in the region, is characterized by rigid concretions that are difficult to dissolve in aqueous media, making it difficult to visualize and analyze subfossils taxa. Sediment samples were prepared according to the standard methodology used in paleolimological studies and the methodological adaptations proposed in the present study, which included the addition of 1 mg of Kochia scoparia, a palynological marker used to estimate subfossil density, as well as the addition of hydrofluoric acid (HF) to oxidize silicate materials. The samples prepared according to the new methodological procedure improved Cladocera subfossil visualization, facilitating the taxonomic analysis of the species. The samples submitted to the standard methodological procedure had a significantly higher mean of sediment particles (mean of 84.2 sediment particles) and 70% more residues compared to the samples prepared with the newly proposed methodology (mean of 22.1 sediment particles). Absolute data on the temporal variation of the density of Cladocera subfossils was obtained by using the palinological marker K. scoparia, which showed higher densities of subfossils in more recent, humid periods (112,000 subfossils/cm3 at 5 cm, equivalent to 3,500 years BP). The results indicate that the new methodology can contribute to advances in paleolimnological studies of temporary aquatic ecosystems, whose lake histories are rarely investigated, despite their ecological relevance as ecosystems that indicate environmental and climatic changes.
Alternative substrates for conidiogenesis of the entomopathogenic fungus Beauveria bassiana (Bals) Vuillemin (Deuteromycotina: Hyphomycetes)
Authors: Paiva-Guimarães A. G. L. , Freire K. R. L. , Santos S. F. M. , Almeida A. F. , Sousa A.C.B.
Published: April 2019

Abstract Beauveria bassiana is a promising fungus for the biological control of insect pests. The growing costs of conidia production have raised the need to ascertain the efficiency of some low cost substrates. The aim of this study was to analyze the potential use of different raw substrates without nutritional supplement for B. bassiana conidiogenesis. Growth and sporulation were evaluated using 30 g of substrate and 0.3 μL of a conidia suspension (1 x 106 conidia/mL). After 10 days of incubation (70 ± 10% humidity and temperature (T) = 29 ± 1 °C), rice (2.00 x 106 conidia/g substrate), algaroba (2.36 x 106 conidia/g), malt A (1.22 x 106 conidia/g) and malt B (1.75 x 106 conidia/g) showed the highest levels of conidia production. The resulting conidia showed insecticidal activity higher than 80% on coconut termites. These new raw substrates may represent viable alternatives for the production of entomopathogenic fungi for use in the biological control of various insect pests.
Transforming Urban Education in São Paulo: Insights into a Critical-Collaborative School Project
Authors: Liberali Fernanda
Published: April 2019

ABSTRACT The world is experiencing a particularly tense moment which asks for a project that goes beyond the limiting situations posed by immediate reality. This condition considers the critical immersion of individuals in their known realities and broad emersion in multiple contexts of understanding, which may broaden their horizons of perception. Vygotsky and recent followers offer us a basis for rethinking our reality in a collaborative and critical search for forms of development beyond who we are. This article brings about projects developed with schools from very poor and wealthy communities of São Paulo, where participants act together to transform their life conditions.
Performance of diagnostic tests for pulmonary tuberculosis in indigenous populations in Brazil: the contribution of Rapid Molecular Testing
Authors: Malacarne Jocieli , Heirich Alexsandro Santos , Cunha Eunice Atsuko Totumi , Kolte Ida Viktoria , Souza-Santos Reinaldo , Basta Paulo Cesar
Published: April 2019

ABSTRACT Objective: To evaluate the accuracy of rapid molecular testing as a diagnostic tool and estimate the incidence of smear-positive pulmonary tuberculosis among the indigenous population. Methods: This is an epidemiological study based on secondary data. We calculated the incidence of smear-positive pulmonary tuberculosis between January 1st, 2011 and December 31, 2016, and the performance of bacilloscopy and rapid molecular testing in diagnosing pulmonary tuberculosis compared to sputum culture (standard test). Results: We included 4,048 cases of indigenous people with respiratory symptoms who provided sputum samples for analysis. Among them, 3.7%, 6.7%, and 3.7% had positive results for bacilloscopy, sputum culture, and rapid molecular testing, respectively. The mean incidence of pulmonary tuberculosis was 269.3/100 thousand inhabitants. Rapid molecular testing had 93.1% sensitivity and 98.2% specificity, compared to sputum culture. Bacilloscopy showed 55.1% sensitivity and 99.6% specificity. Conclusions: Rapid molecular testing can be useful in remote areas with limited resources and a high incidence of tuberculosis, such as indigenous villages in rural regions of Brazil. In addition, the main advantages of rapid molecular testing are its easy handling, fast results, and the possibility of detecting rifampicin resistance. Together, these attributes enable the early start of treatment, contributing to reduce the transmission in communities recognized as vulnerable to infection and disease.
Locução automatizada e o rádio musical: primeiras aproximações
Authors: Lopez Debora Cristina , Resende Marcos , Borges Daniel
Published: April 2019

Resumo Neste artigo trazemos os resultados iniciais de uma pesquisa que busca compreender o papel da automação de locução através do uso de voz sintetizada sem gravação humana no rádio musical. Discutimos, então, o papel da tecnologia e da automação no rádio para depois nos aproximarmos, através de um olhar teórico, da apresentação de exemplos e da discussão de tendências, deste fenômeno comunicacional. Olhamos para o objeto a partir das discussões de inovação, preponderantemente do debate sobre adoção de inovação apresentado por Rogers (1983).
PROTOCOL OF NURSING CARE ON ZERO DAY OF THE TRANSPLANTATION OF HEMATOPOETIC STEM CELLS: COLLECTIVE CONSTRUCTION
Authors: Figueiredo Talita Wérica Borges , Mercês Nen Nalú Alves das , Silva Luana Aparecida Alves da , Machado Celina Angélica Matos
Published: April 2019

ABSTRACT Objective: to construct a protocol of nursing care to the patient on day zero of hematopoietic stem cell transplantation. Method: a convergent care research was developed from August to December 2016 in a Bone Marrow Transplant Service. The participants were twenty-two nurses from this service. The technique of data collection used was discussion groups. For the analysis the following steps were taken: transcription of the data, highlighting the suggestions of the participants; distribution of contributions by theme, for synthesis of the elements in a coherent whole, scientific evidence and contributions of the participants; and construction of the protocol, with refinement and approval of the final version by nurses. Results: the protocol, guides nursing care to be provided by the nurse on day zero of hematopoietic stem cell transplantation, according to the infusion mode: fresh and cryopreserved-thawed. These precautions aim to prevent, identify and intervene early in complications related to cell infusion. Conclusion: the protocol, product of the research, was elaborated in the union of scientific evidences, with the reality of the service and the experience of the participating nurses. The utilization of the methodological steps of convergent care research was a facilitator, because, as it presupposes, it provided the union of care practice with scientific research. The participation of nurses in the construction and approval of the protocol enabled the subsequent implementation and use of this tool in nursing service.
BRASIL: É UMA DEPRESSÃO, NÃO FOI APENAS UMA RECESSÃO
Authors: Sicsu João
Published: April 2019

RESUMO O objetivo do artigo é caracterizar a situação econômica brasileira atual e fazer a sua datação. O Brasil possui nos dias de hoje as principais características das depressões de 1870 e 1930. Naqueles episódios históricos, houve uma queda acentuada do produto, uma elevada taxa de desemprego e uma prolongada insuficiência de demanda. O Brasil, desde o final de 2013 e durante o ano de 2014, apresentou os primeiros sinais de uma recessão que poderia deslizar para uma depressão. Em 2015, mergulhou na depressão. A depressão é uma condição anormal da economia. Uma recessão seria uma condição normal da economia.
Optimization of a technique to quantify the total phenolic compounds in jambolan ( Syzygium cumini Lamark) pulp
Authors: Brandão Taís Silva de Oliveira , Pinho Lorena Silva , Teshima Elisa , David Jorge Mauricio , Rodrigues Maria Isabel
Published: April 2019

Abstract There are various known extraction methods that can be applied to the quantification of phenolic compounds, and thus it is up to the researcher to perfect the process that best applies to the sample in question. Different extraction solvents (liquid-liquid extraction) were compared in order to assess their effectiveness for the analysis of total phenols in jambolan ( Syzygium cumini Lamark) pulp extract using the conventional Folin-Ciocalteau methodology. Three CCRDs (Central Composite Rotational Designs) were carried out to evaluate the factors influencing the extraction process conditions. The variables studied were the solvent concentration (ethanol and methanol, diluted in water) and the mixing time in the compound extraction process. Of the conditions studied, it was shown that a 60% ethanol in water extraction solvent with a mixing time of 10 minutes, in addition to extracting a greater concentration of phenolic compounds, showed the greatest cost benefit advantage, since ethanol is cheaper and less toxic than methanol.
Efficiency Losses in Healthcare Organizations Caused by Lack of Interpersonal Relationships
Authors: Migowski Sérgio Almeida , Gavronski Iuri , Libânio Cláudia de Souza , Migowski Eliana Rustick , Duarte Francisco Dias
Published: April 2019

Abstract Despite all quality management and integration literature prescriptions to implement strategies for a better organizational performance, healthcare organizations support a model that is inefficient, expensive, and unsustainable over time. This work aims to examine the interpersonal relationships in three large hospitals located in Southern Brazil and its relation with organizational efficiency. Through a qualitative and explanatory research, semi-structured interviews were applied to 32 professionals, in addition to a document analysis. The data analysis shows that integration occurs at the formal leadership level only in one of the organizations and does not involve the medical and operational professionals. Quality management seems not to be fully incorporated into care routines, and are related to efficiency losses. This scenario is probably related to the lack of integration among the professionals and the consolidation of trust, leadership, and communication.
Selection of squash “Menina Brasileira” carrying the allele “Bush” with high yield potential
Authors: Ferreira Mariane G , Almeida Gabriella Q de , Pessoa Herika P , Dariva Françoise D , Dias Felipe de O , Nick Carlos
Published: April 2019

ABSTRACT This study was performed to introduce the allele Bush of commercial cultivars with a bush growth habit into Cucurbita moschata accessions and select the best crossings for production potential and standard fruit shape “Menina Brasileira” through general combining ability (GCA) and specific combining ability (SCA). To determine GCA and SCA, a partial diallel analysis was performed. The parental group (group I) consisted of two cultivars containing the dwarfism bush gene, and the second group (Group II), formed by five accessions of UFV Vegetable Germplasm Bank, with high production potential and fruit shape “Menina Brasileira”. We evaluated: productivity (PROD), fruit shape (FORM), growth rate until the 50th day after transplanting (CRESC), and length of the main stem on the 50th day (COMP). Significant differences were noticed for CRESC and COMP only between GCA of parents belonging to group I, in which Zapallo stood out. For PROD and FORM, diallel analysis proved to be efficient in studying GCA effects. Cultivar Piramoita (group I) and accessions BGH-4360 and BGH-5253 (group II) showed positive values for GCA, suggesting that these parents possess a higher frequency of favorable alleles for these two traits. Significance in SCA effects was also verified, highlighting the crossing Piramoita x BGH-4360, for PROD, indicating that this combination is the most promising for breeding purposes.
Phenotypic stability of strawberry cultivars based on physicochemical traits of fruits
Authors: Gabriel André , Resende Juliano TV de , Zeist André Ricardo , Resende Luciane V , Resende Nathalia CV , Zeist Ricardo Antônio
Published: April 2019

ABSTRACT Strawberry shows genetic variability between cultivars and, environmental elements affect the physicochemical traits of fruits when assessed under different environments. So, assessment of the stability of physicochemical traits is a tool that assists the producer in the choice of the cultivar with higher acceptance in the consumer market. This study aimed to assess the stability of strawberry cultivars based on physicochemical traits of fruits on three environments using the additive main effects with multiplicative interaction (AMMI) analysis. Thirteen strawberry cultivars were assessed in Lavras-MG, Uberlândia-MG, and Guarapuava-PR. The experimental design was in blocks with treatments at random and four replications. The stability of physicochemical traits of fruits (firmness, soluble solids, titratable acidity, soluble solids to titratable acidity ratio, vitamin C, and anthocyanins) was assessed. For the stability and performance of physicochemical traits under the three environments, the cultivars Tudla and Festival stood out for fruit firmness, Albion for soluble solids, Aromas and Tudla for titratable acidity, Sweet Charlie and Palomar for soluble solids to titratable acidity ratio, and Camarosa for vitamin C and anthocyanins.
Growth of sweet pepper plants submitted to water tensions in soil and potassium silicate doses
Authors: Pereira Alexandre Igor A , Guimarães João de Jesus , Costa João Victor , Cantuário Fernando S de , Salomão Leandro C , Oliveira Roberta C de , Luz José Magno Q
Published: April 2019

ABSTRACT Water stress compromises plant growth. Resistance inducers, such as potassium silicate (K2SiO3), can reduce negative effects of this stress on Solanaceae, Capsicum annuum. Plant height, stem diameter and leaf area may indicate the efficiency of potassium silicate foliarsprayagainst water stress. The aim of this study was to evaluate the growth of sweet pepper plants under water stress and K2SiO3 doses. The experiment was conducted in randomized blocks in a split-plot scheme in space. The treatments consisted of four soil water stresses: 15 kPa (field capacity), 25 (intermediate value), 35 and 45 kPa (water stress) and three doses of potassium silicate (0, 0.4 and 0.8 L 100 L-1 water), acting as resistance inducers to water stress. The resistance inducer maintained greater heights of the sweet pepper plants, under water stress (35 and 45 kPa) at the initial stage [(20 days after transplanting (DAT)]. Smaller plant diameters were observed at 80 and 100 DAT at 35 and 45 kPa. Sprays using K2SiO3 maintained sweet pepper leaf area with higher values, even under stress condition. The soil water tension from 35 kPa limited, in general, the plant growth. Growth responses in Capsicum annuum to K2SiO3, via foliar spraying, varied according to plant age, as well as the growth parameter considered in this experiment.
Physiological characterization of plant growth in sweet potato
Authors: Ferreira Marcos Aurélio M , Andrade Junior Valter C , Oliveira Altino JM , Ferreira Evander A , Brito Orlando G , Silva Lidiane R
Published: April 2019

ABSTRACT This research was installed to study plant growth of sweet potato and identify the most favorable harvest time for both roots and the aboveground part (stems). The experiment was carried out at the JK campus of the Federal University of the Vale do Jequitinhonha e Mucuri, in Diamantina, MG, complete blocks at random, with four replications. Three plants in the central part of the experimental plots were collected in twelve consecutive harvests at 15-day intervals. Plants were fractionated in roots, stems, and leaves to determine the dry matter of each part. Leaf area was also measured and growth rates were calculated. Data were analyzed by means of regression. Plants reached the highest dry matter accumulation between 75 and 156 days after transplanting (DAT), which corresponded to the phase of greatest growth. Plants should be harvested between 60 and 87 DAT to achieve the highest stem yield. For the highest root yield, the harvest should be carried out 180 DAT. The period from 80 to 118 DAT was the most adequate for reaching simultaneously the highest yields for both roots and stems. Therefore, the ideal harvest time for sweet potatoes depends on the use intended for the plant and on the physiological indexes associated with it.
Formación inicial docente y competencias emocionales: análisis del contenido disciplinar en universidades brasileñas
Authors: Barcelar Lucicleide de Souza , Martín Miguel Ángel Carbonero
Published: April 2019

Resumen Esta investigación, realizada sobre las materias impartidas durante la formación de profesores de licenciaturas en matemáticas, tiene como objetivo identificar los contenidos que tratan sobre las competencias emocionales. Este estudio busca averiguar las carencias y sugerir mejoras en la formación de profesores, a través de la reflexión de los contenidos contemplados en los programas de licenciaturas. Esta investigación contribuye a enriquecer las reflexiones que se plantean en la educación sobre el ejercicio de la misma, y los desafíos que se enfrentarán los futuros profesores en las aulas. La metodología tipo exploratoria y descriptiva tiene como base la investigación bibliográfica y documental. Se concretó el análisis de las materias y contenidos de los diseños curriculares vigentes en los cursos de matemáticas en cinco universidades brasileñas, la muestra fue seleccionada teniendo en cuenta la distribución por regiones. A partir de los resultados fue posible identificar las carencias de dichas competencias, concluyendo que hay un déficit del contenido acerca de las competencias emocionales. Este déficit se refleja en la formación inicial de profesores inscritos en las licenciaturas de matemáticas. En síntesis, el contenido de las competencias emocionales se contempla de forma superficial en los currículos base de las licenciaturas investigadas en el contexto brasileño. Ello indica que el profesor en formación no recibe una formación adecuada para atender a las necesidades de su labor educativa.
A função social da escola em discussão, sob a perspectiva da educação inclusiva
Authors: Dainez Débora , Smolka Ana Luiza Bustamante
Published: April 2019

Resumo O objetivo do presente estudo é problematizar a função social da escola no contexto das políticas de educação inclusiva, com base em um trabalho investigativo a respeito das práticas educativas e do processo de escolarização de dois alunos com deficiência, intelectual e múltipla. As discussões ancoram-se nas contribuições teórico-metodológicas da psicologia histórico-cultural que parte do pressuposto da natureza social do desenvolvimento humano e do papel da educação escolar no processo de constituição humana. A pesquisa de campo foi realizada em uma escola pública municipal do ensino fundamental de uma cidade do estado de São Paulo. Os registros em diário de campo e as videogravações do cotidiano da escola constituíram o material empírico para a análise, fornecendo elementos para se questionar os objetivos da educação escolar circunscritos ou restritos à socialização e ao trabalho de estimulação referentes aos alunos com deficiência. A análise destaca os modos e as possibilidades de participação dos alunos nas práticas educacionais e evidencia o desafio da escola em considerar as especificidades, tendo em vista as possibilidades de ensino-aprendizagem. Ao destacar o princípio da significação na elaboração histórica do conhecimento e ressaltando as diversas formas e condições de apropriação da cultura, o estudo aponta para a premência de se reconsiderar a função social da escola, de maneira a ampliar as possibilidades de conhecimento e desenvolvimento humano.
ANALYSIS OF THE TARGET DECOMPOSITION TECHNIQUE ATTRIBUTES AND POLARIMETRIC RATIOS TO DISCRIMINATE LAND USE AND LAND COVER CLASSES OF THE TAPAJÓS REGION
Authors: Wiederkehr Natalia Cristina , Gama Fábio Furlan , Mura José Cláudio , Santos João Roberto dos , Bispo Polyanna da Conceição , Sano Edson Eyji
Published: April 2019

Abstract This study aims to analyze the capability of the target decomposition techniques and the polarimetric ratios applied to the ALOS/PALSAR-2 satellite polarimetric images to discriminate the land use and land cover classes in the Tapajós National Forest region, Pará State. Three full polarimetric ALOS/PALSAR-2, level 1 single look complex scenes were selected to generate the coherence and the covariance matrices to derive the Cloude-Pottier and the Freeman-Durden target decomposition attributes. From the radiometrically calibrated PALSAR-2 images, we generated the backscatter coefficients, the cross polarized ratio (RC; HV/HH), the parallel polarized ratio (RP; VV/HH) and the Radar Forest Degradation Index (RFDI). The images resulting from these polarimetric attributes were processed by the Maximum Likelihood (MAXVER) classifier coupled with the Iterated Conditional Modes (ICM) contextual algorithm. We found that the classifications derived from the target decomposition attributes, mainly from the Cloude-Pottier technique, with a Kappa index of 0.75, presented a significant higher performance than those derived from the RC ratio, RP ratio, and RFDI.
Grafting with chondroitin sulfate on poly(vinyl alcohol) to improve antifouling property
Authors: Zhou Jinsheng , Lin Yanming , Lv Jing , Zhou Li , Hu Huiyuan , Yu Li , Zhang Qilong , Yang Hui , Luo Zhongkuan
Published: April 2019

Poly(vinyl alcohol) (PVA) hydrogels become muddy while used in artificial corneas. To enhance the antifouling property of PVA hydrogels, a PVA hydrogel was grafted with chondroitin sulfate (CdS) through a two-step reaction in this work. The surface chemical compositions, surface morphology and thermal property of the hydrogel were characterized by attenuated total reflectance FTIR, X-ray photoelectron spectroscopy, atomic force microscopy, scanning electron microscopy and thermogravimetric analysis. It was confirmed that CdS was successfully grafted onto the surface of the PVA hydrogel through a two-step method. After grafting with p(GMA-CdS) (GMA: glycidyl methacrylate), both the thermal and mechanical properties of the PVA hydrogel became weaker and the PVA hydrogel became hydrophilic. The biocompatibility of the PVA-g-p(GMA-CdS) hydrogel could be considered as non-cytotoxic according to ISO 10993-5:2009. The antifouling property of the PVA-g-p(GMA-CdS) hydrogel, namely its anti-protein adsorption and anti-cell adhesion, was significantly improved due to surface hydration, steric exclusion effect and charge surface. The anti-protein adsorption of the PVA-g-p(GMA-CdS) hydrogel increased by about 33·48% in comparison with that of the PVA hydrogel and the anti-cell adhesion increased by about 67·92%. Overall, the PVA-g-p(GMA-CdS) hydrogel is an ideal biomaterial candidate for artificial corneas.
Geophysical characteristics of a focused fluid flow system in the western South China Sea
Authors: Zhang Xudong , Yin Cheng , Dai Ronghuo , Zhang Gulan
Published: April 2019

High-resolution multichannel seismic data and multibeam terrain data are used to analyse and identify a focused fluid flow (FFF) system in the central and northern parts of the Zhongjiannan Basin in the western South China Sea. The authors classify and summarise the geophysical characteristics of an FFF system in the study area. It is divided into a fault-related FFF system and a column-related FFF system. In addition, the FFF system in the study area is mainly located within the tectonic activity area, thin slope break belt and land slope area. The rich FFF system in the study area is an important channel for fluid migration, which is conducive to gas hydrate accumulation. The FFF system in the study area is poorly studied, and the distribution research results of the FFF system in this area can be used more widely in hydrocarbon and gas hydrate exploration and must be taken into account when assessing seabed stability.
Book review
Authors: Bathurst R. J.
Published: April 2019

Geosynthetic Encased Columns for Soft Soil Improvement
Programa Bolsa Família e educação escolar: uma abordagem de dados em painel
Authors: Lima Patrícia Verônica Pinheiro Sales , Vasconcelos Joyciane Coelho
Published: April 2019

Este artigo tem como objetivo avaliar se, e de que forma, o Programa Bolsa Família (PBF) contribuiu para melhorar os indicadores de educação infantil e ensino fundamental nos Estados Brasileiros. Com a estimação de modelos de regressão com dados em Painel para período de 2005 a 2014 espera-se verificar se os recursos do PBF foram capazes de influenciar o comportamento dos indicadores educacionais nas unidades brasileiras. Logo, pretende-se potencializar o impacto do PBF na promoção de uma educação mais inclusiva e de melhor qualidade. Despertar os Estados para a necessidade de criar mecanismos que favoreçam a efetividade das políticas sociais realizadas pelo Governo Federal. Os resultados deste artigo revelam que a situação da educação esta melhorando no Brasil como um todo. Mas, em alguns Estados isso ocorre de forma lenta e verifica-se são necessários vários anos para se alcançar uma situação menos desigual na educação entre as Unidades Federativas.
Programas institucionais de aquisição de alimentos e organizações de produtores: catalisadores para a transformação de sistemas de abastecimento de alimentos de pequenos produtores
Authors: Swensson Luana F.J.
Published: April 2019

Os pequenos agricultores (ou agricultores familiares) são os principais responsáveis pela produção de alimentos em grande parte dos países em desenvolvimento. No entanto, a capacidade de acesso ao mercado é geralmente limitada, representando um dos principais obstáculos para a melhoria de seus modos de vida. Neste contexto, intervenções estatais que visam aumentar a demanda por produtos da agricultura familiar por meio de compras públicas de alimentos representam um importante instrumento para promover o acesso destes produtores ao mercado. Ao mesmo tempo, tais intervenções podem contribuir para o desenvolvimento e transformação dos sistemas locais de fornecimento de alimentos. As organizações de pequenos produtores, na qualidade de instrumento de ações coletivas, podem desempenhar um papel importante nesse processo. Esse estudo se baseia na experiência brasileira do Programa Nacional de Alimentação Escolar (PNAE) e do Programa de Aquisição de Alimentos (PAA), assim como na iniciativa Compras para Progresso (P4P) do Programa Mundial de Alimentos das Nações Unidas. Ele tem como objetivo explorar o papel dos programas institucionais de compras públicas de alimentos e das organizações de produtores na promoção de oportunidades de comercialização para pequenos produtores e como catalisadores para a transformação de sistemas locais de fornecimento de alimentos da agricultura familiar.
Mercados institucionais e a construção de territórios de paz na Colômbia
Authors: Perafán Mireya Eugenia Valencia
Published: April 2019

Este trabalho faz parte da pesquisa Transbrasil financiada pelo CNPq a qual analisou as modalidades de disseminação na América Latina e Caribe de “modelos” brasileiros de políticas públicas para a agricultura familiar e, a partir da qual, foi possível estudar diferentes políticas públicas em diferentes contextos, entre eles as políticas de compras públicas na Colômbia. Particularmente, discute-se neste texto como iniciativas pontuais de inserção a mercados e fortalecimento da segurança alimentar, geram inventivos para a reconstrução de territórios fortemente afetados pela guerra. Este é o caso particular do município de Granada na Colômbia, um município pioneiro no tema de Segurança Alimentar e Nutricional (SAN) por formular, em 2006, um acordo municipal para constituir uma mesa de diálogo em SAN (Acordo 35 de 14 de maio de 2006). Desde essa época, existiam nesta localidade ações direcionadas à compra de alimentos dos agricultores familiares (especialmente alimentos produzidos pela população vítima do conflito armado) como parte da estratégia da Agência da ONU para Refugiados/Departamento Administrativo do Sistema para Prevenção, Atenção e Recuperação de Desastres e das orientações do Plano de Desenvolvimento Municipal 2012-2015. Para os gestores públicos do município de Granada a compra de produtos da agricultura familiar é um caminho para dinamizar a economia local e, ao mesmo tempo, avançar na construção de um território de paz.
A aquisição pública de alimentos como mecanismo de desenvolvimento na Colômbia
Authors: Schneider Sergio , Bohórquez Nathalia Valderrama
Published: April 2019

A alimentação pública é um campo em disputa, em que os atores coletivos, por meio das suas habilidades sociais, reconstroem normas e significados para conduzir à emergência ou à estabilidade da política. O objetivo do estudo é analisar como a aquisição pública de alimentos pode ser um mecanismo de desenvolvimento em zonas de conflito armado na Colômbia, empregando a perspectiva da Teoria dos Campos de Ação Estratégica e a Abordagem Possibilista de Albert Hirschman. Metodologicamente, a pesquisa corresponde a três estudos de caso. Analisam-se como as formas de organização social de atores coletivos disputam concepções de mundos, redefinem regras e normas e empregam múltiplos recursos para formar alianças, desestabilizar o campo, consolidar seus interesses e reproduzirem-se socialmente. Os resultados sugerem que as políticas públicas de alimentação são concebidas sob estruturas homogêneas que ignoram e tornam invisíveis as formas de gestão comunitária e autônoma. A gestão comunitária e autônoma resiste aos modelos homogeneizadores da contratação pública e do abastecimento, e reivindica a necessidade de redefinir as regras e concepções de mundos em relação a qualidade e as relações que transcendem do campo econômico. Essa última expressa-se como forma de organização mais eficiente e eficaz na resposta às demandas prioritárias das populações rurais. Além disso, constrói novos significados em torno da qualidade dos alimentos e da gestão dos programas públicos em alimentação, num processo de disputas pela reprodução dos múltiplos atores dentro do campo.
Actores, redes y alimentos: la participación de la agricultura familiar y campesina en la alimentación escolar del Brasil y Colombia
Authors: Calderón Patricia Elena Giraldo , Grisa Catia
Published: April 2019

O artigo tem como objetivo comparar as redes de compras públicas de produtos da agricultura familiar e campesina para os programas de alimentação escolar nos municípios de Granada (Antioquia-Colômbia) e São Lourenço do Sul (Rio Grande do Sul-Brasil) nos anos de 2016 e 2017. Para tal fim, o estudo partiu da abordagem teórica metodológica de redes de política pública, articulada às abordagens de Análise de Redes Sociais e comparação de Sistemas de Máxima Diferença. Entre os resultados obtidos se evidenciou como os municípios, com contextos políticoinstitucionais diferenciados, convergem em relações e atores semelhantes para garantir compras públicas para a alimentação escolar. Em que pese à convergência, também foi possível observar diferenças quanto ao papel do Estado e suas políticas, mais fortes e com maior trajetória no Brasil que na Colômbia; a cooperação internacional, mais forte e importante na Colômbia que no Brasil; o papel dos atores sociais, fortes e organizados em ambos os municípios, mas com maior suporte institucional no Brasil que na Colômbia; e, finalmente, liderança de diferentes atores e agentes locais para implementar a participação da agricultura familiar na alimentação escolar.
Análise da operacionalização da política de aquisição de alimentos da agricultura familiar por parte dos municípios: o caso do PNAE em três microrregiões do Oeste Catarinense
Authors: Kroth Darlan Christiano , Zonin Valdecir José , Coletti Tomé , Simões Willian , Von Dentz Eduardo
Published: April 2019

O presente estudo tem como objetivo avaliar a governança por parte das prefeituras municipais do Programa Nacional de Alimentação Escolar (PNAE), conforme a Lei n. 11.947/2009, que prevê a aquisição de alimentos oriundos de agricultores familiares no valor mínimo de 30% dos recursos do Fundo Nacional de Desenvolvimento da Educação (FNDE). O trabalho lançou mão de estudo de caso em três microrregiões do Oeste de Santa Catarina (Chapecó, Concórdia e Xanxerê), considerando uma amostra constituída de 31 municípios. Os principais resultados demonstraram que o PNAE vem se apresentando eficaz, atingindo seus principais objetivos, em termos de fortalecimento da agricultura familiar, de proporcionar melhor qualidade nutricional para os alunos e de promover o desenvolvimento local/regional. Por outro lado, esses resultados poderiam ser maiores (ampliando a eficiência da política), caso a governança do Programa por parte das prefeituras municipais fosse mais robusta. A pesquisa verificou, ainda, que apenas quatro prefeituras (13% de nossa amostra) realizam uma gestão considerada adequada do Programa, no sentido de desenvolver ações de organização da produção, auxílio logístico e assessoria técnica aos agricultores.
Öğretmen Adaylarının Sosyal Medya Etiğine İlişkin Görüşlerinin Etik İkilem Senaryolarıyla İncelenmesi
Authors: MISIRLI Özge , KUZU Abdullah
Published: April 2019

Teknolojinin

yaygınlaşmasıyla birlikte etik dışı davranışlarda bulunmak daha kolay bir hal

almıştır. Gerek maruz kalınan olaylar gerekse gözlemlenen davranışlar temel

alınarak aslında etik olmayan pek çok davranış normalleşmiş, çok sayıda insan

tarafından sıklıkla yapılır hale gelmiştir. Mason (1986) tarafından ortaya

konulan modelin temel alındığı bu araştırmanın amacı öğretmen adaylarının

sosyal medyadaki etik davranışlarına ilişkin profillerini ortaya koymaktır. Araştırmada 23 öğrenci ile üç grupta odak grup

görüşmesi yapılmıştır. Odak grup görüşmelerinde araştırmacı tarafından yazılmış

olan etik ikilem senaryoları kullanılmış ve öğrencilerin bu senaryolar

üzerinden tartışmaları sağlanmıştır. Yapılan odak grup görüşmelerine

göre öğrencilerin birkaçı dışında hepsinin kendilerine sağlayacakları

faydaların etik davranışlarının önüne geçtiği, kendi menfaatleri söz konusu

olduğu zaman etik dışı davranmaktan çekinmeyebilecekleri yapılan görüşmelerden

elde edilen sonuçlar arasında olduğu söylenebilir.
İlkokul Öğretmenlerinin Matematik Dersindeki Ölçme ve Veri İşleme Öğrenme Alanına İlişkin Görüşlerinin İncelenmesi
Authors: TOPTAŞ Veli , BODUR Büşra Nur , USLUOĞLU Büşra
Published: April 2019

Bu çalışmada, ilkokul öğretmenlerinin matematik dersindeki ölçme ve veri
işleme öğrenme alanına ilişkin görüşlerinin incelenmesi amaçlanmıştır.
Çalışmada öğretmenlerin ölçme ve veri işleme öğrenme alanına ilişkin görüş ve
tecrübelerinin incelenmesinde nitel araştırma desenlerinden biri olan
Fenomenografik araştırma metodu kullanılmıştır. Çalışmaya Kırıkkale il
merkezinde görev yapmakta olan 10 sınıf öğretmeni katılmıştır. Veriler
araştırmacılar tarafından yarı-yapılandırılmış yüz yüze görüşme tekniği ile
toplanmıştır. Çalışmanın sonucunda öğretmenlerin bireysel farklılıkları
gözeterek kazanımlar doğrultusunda ve akıllı tahta aracılığı ile matematik
öğretimi yaptıkları tespit edilmiştir. Ayrıca öğretmenler kazanımların çocuklar
için uygun olduğunu belirtmişlerdir. Fakat öğretmenler ‘Ölçme ve veri işleme
öğrenme alanına ilişkin ne tür materyaller tasarlıyorsunuz?’ sorusu üzerine
kendilerini yetersiz gördüklerini ve sadece ders araç gereçleriyle yetindiklerini
belirtmişlerdir
Experimental determination of partial discharges in a model of a digital instrument transformer by differential method
Authors: Gusenkov A.V. , Lebedev V.D. , Litvinov S.N. , Slovesny S.A. , Yablokov A.A.
Published: April 2019

Power facilities are now implementing the concept of smart grid and its essential elements – high-voltage digital current and voltage transformers. However, the implementation of digital technologies is slowed down by the lack of operation experience and reliability indicators. One of the main causes of high-voltage equipment failures is insulation damage. The most informative parameters determined by insulation evaluation are partial discharge characteristics. There are rated values of these characteristics for rotating electrical machines and power transformers measured by external equipment. But the existing method of partial discharge analysis cannot be applied to digital current and voltage transformers as there are no criteria for tripping of the innovative equipment with comprehensive insulation. All this urges us to study the possibility to determine experimentally the characteristics of partial discharges in the insulation of digital current and voltage transformers by using embedded inductive sensors in order to develop a method for condition monitoring of digital current and voltage transformers and improving of their reliability. In this work, we have used a model of digital current and voltage transformers, a high-voltage test unit, a digital multi-input oscciloscope and inductive sensors. The experiment includes: detecting partial discharges in the model of digital current and voltage transformers by the external bridge connection, recording the voltage at which partial discharges occur in the simulated fault area, measuring the corresponding value of the apparent charge of the partial discharge, detecting partial discharges in the model of digital current and voltage transformers by a differential method with the help of embedded inductive sensors. The characteristics of partial discharges in the simulated fault area have been experimentally determined on a model of digital current and voltage transformers. The pulse voltage on the embedded inductive sensor corresponding to the apparent charge of 80 pC was equal to 600 mV at the test voltage of 2,7 kV. Embedded inductive sensors allow implementing the method of insulation condition monitoring for digital current and voltage transformers in accordance with the partial discharge characteristics both at the stages of production and operation extending the potential of the electronic (microprocessor) module and increasing the reliability of digital current and voltage transformers.
Development and study of a dynamic model of single-phase amorphous steel core transformer
Authors: Tikhonov A.I. , Karzhevin A.A. , Podobny A.V. , Dryazgov D.E.
Published: April 2019

The use of amorphous ferromagnetic alloys in transformer construction allows reducing no-load losses by 4 times or more. At the same time, the magnetization curve of amorphous steel has a shape that is close to a rectangle, which significantly distorts the shape of the no-load current curve. This is accompanied by inrush current increases when a saturated transformer is turned on. However, there are no publications devoted to this issue in the periodicals. The purpose of this work is to develop a dynamic model and study the dynamics of an amorphous steel core single-phase transformer (TAS) operating at an arbitrary external load. The calculation of the electrical circuit was made by a one-step method based on a modified 2nd-order Rosenbrock formula, and the circuit parameters were calculated by the finite element method. We have developed dynamic models of the single-phase transformer based on the use of controlled current sources and EMF and implemented in the MatLab Simulink SimPowerSystem. These models allowed us to take into account the effect produced by the practically rectangular shape of the magnetization curve of the amorphous steel used to make the core on the operation of a saturated transformer. It has been established that the inrush current occurring when a saturated TAS is switched on can exceed the rated current tenfold. A significant distortion of the current curve has been detected in the first periods even when the transformer operates at nominal load. The developed models can be used to study the operation of a transformer at an arbitrary load. These models can be developed further. It has been found that a significant effect on the transformer operation is produced by the shape of the amorphous steel magnetization curve.
Câncer de boca: conhecimento de motoristas de transportes de carga em um município de Santa Catarina (Brasil)
Authors: Campos Gislon Luciane , Mafra Thayse , Bottan Elisabete Rabaldo
Published: April 2019

Objetivo: Caracterizar o conhecimento de um grupo de condutores de transportes de carga sobre câncer de boca. Métodos: Estudo descritivo transversal. A população de referência foram os 52 motoristas de caminhão de uma empresa do município de Itajaí (SC). As informações foram obtidas através da aplicação de questionário estruturado em três campos: características sociodemográficas, domínio atitudinal e domínio cognitivo. Os dados foram submetidos à análise descritiva, mediante a obtenção da frequência (absoluta e relativa). Resultados: Participaram 45 motoristas; todos do sexo masculino, com idade média de 48,2 anos. Quanto à escolaridade, a maior frequência (34,1%) foi para o ensino médio completo. Sessenta por cento não receberam informações sobre câncer de boca, contudo 82,2% demonstraram interesse em participar de atividades educativo-preventivas sobre o tema. Nenhum dos participantes costuma fazer a observação da sua cavidade bucal. Nas questões do campo cognitivo, o melhor desempenho foi para os itens sobre fatores etiológicos, sendo o hábito de fumar o mais destacado. A frequência de respostas erradas foi superior a 75% para a maioria das questões sobre conhecimento. A maior frequência de respostas corretas, no domínio cognitivo, ocorreu entre os participantes que haviam recebido informações sobre o tema do câncer de boca. Conclusão: Os participantes apresentaram importantes lacunas no conhecimento sobre câncer de boca, no entanto, o melhor desempenho foi identificado entre aqueles que haviam recebido, previamente, informações sobre a temática em estudo.