bluuebunny/crossref_metadata_2025 huggingface dataset:
Understanding mercury oxidation and air-snow exchange on the East Antarctic Plateau: A modeling study
Authors: Song Shaojie , Angot Hélène , Selin Noelle E. , Gallée Hubert , Sprovieri Francesca , Pirrone Nicola , Helmig Detlev , Savarino Joël , Magand Olivier , Dommergue Aurélien
Published: June 2018

Abstract. Distinct diurnal and seasonal variations of mercury (Hg) have been observed in near-surface air at Concordia station on the East Antarctic Plateau, but the processes controlling these characteristics are not well understood. Here, we use a box model to interpret the Hg0 (gaseous elemental mercury) measurements in year 2013. The model includes atmospheric Hg0 oxidation (by OH, O3, or bromine), surface snow HgII (oxidized mercury) reduction, and air-snow exchange, and is driven by meteorological fields from a regional climate model. The simulations suggest that a photochemically driven mercury diurnal cycle occurs at the air-snow interface in austral summer. The fast oxidation of Hg0 in summer may be provided by a two-step bromine-initiated scheme, which is favored by low temperature and high nitrogen oxides at Concordia. The summertime diurnal variations of Hg0 (peaking during daytime) may be confined within several tens of meters above the snow surface and affected by changing mixed layer depths. Snow reemission of Hg0 is mainly driven by photoreduction of snow HgII in summer. Intermittent warming events and a hypothesized reduction of HgII occurring in snow in the dark may be important processes controlling the mercury variations in the non-summer period, although their relative importance are uncertain. The Br-initiated oxidation of Hg0 is expected to be slower at Summit Greenland than at Concordia (due to their difference in temperature and levels of nitrogen oxides and ozone), which may contribute to the observed differences in the summertime diurnal variations of Hg0 between these two polar inland stations.
Interannual-to-multidecadal hydroclimate variability and its sectoral impacts in northeastern Argentina
Authors: Lovino Miguel A. , Müller Omar V. , Müller Gabriela V. , Sgroi Leandro C. , Baethgen Walter E.
Published: June 2018

Abstract. This study examines the joint variability of precipitation, river streamflow and temperature over northeastern Argentina; advances the understanding of their links with global SST forcing; and discusses their impacts on water resources, agriculture and human settlements. The leading patterns of variability, and their nonlinear trends and cycles are identified by means of a principal component analysis (PCA) complemented with a singular spectrum analysis (SSA). Interannual hydroclimatic variability centers on two broad frequency bands: one of 2.5–6.5 years corresponding to El Niño Southern Oscillation (ENSO) periodicities and the second of about 9 years. The higher frequencies of the precipitation variability (2.5–4 years) favored extreme events after 2000, even during moderate extreme phases of the ENSO. Minimum temperature is correlated with ENSO with a main frequency close to 3 years. Maximum temperature time series correlate well with SST variability over the South Atlantic, Indian and Pacific oceans with a 9-year frequency. Interdecadal variability is characterized by low-frequency trends and multidecadal oscillations that have induced a transition from dryer and cooler climate to wetter and warmer decades starting in the mid-twentieth century. The Paraná River streamflow is influenced by North and South Atlantic SSTs with bidecadal periodicities. The hydroclimate variability at all timescales had significant sectoral impacts. Frequent wet events between 1970 and 2005 favored floods that affected agricultural and livestock productivity and forced population displacements. On the other hand, agricultural droughts resulted in soil moisture deficits that affected crops at critical growth stages. Hydrological droughts affected surface water resources, causing water and food scarcity and stressing the capacity for hydropower generation. Lastly, increases in minimum temperature reduced wheat and barley yields.
Hot regions of labile and stable soil organic carbon in Germany – Spatial variability and driving factors
Authors: Vos Cora , Jaconi Angélica , Jacobs Anna , Don Axel
Published: June 2018

Abstract. Atmospheric carbon dioxide levels can be mitigated by sequestering carbon in
the soil. Sequestration can be facilitated by agricultural management, but
its influence is not the same on all soil carbon pools, as labile pools with
a high turnover may be accumulated much faster but are also more vulnerable to
losses. The aims of this study were to (1) assess how soil organic carbon
(SOC) is distributed among SOC fractions on a national scale in Germany,
(2) identify factors influencing this distribution and (3) identify regions
with high vulnerability to SOC losses. The SOC content and proportion of two
different SOC fractions were estimated for more than 2500 mineral topsoils
(< 87 g kg−1 SOC) covering Germany, using near-infrared
reflectance spectroscopy. Drivers of the spatial variability in SOC fractions
were determined using the machine learning algorithm cforest. The SOC content
and proportions of fractions were predicted with good accuracy (SOC content:
R2 = 0.87–0.90; SOC proportions: R2 = 0.83; ratio of
performance to deviation (RPD): 2.4–3.2). The main explanatory variables for
the distribution of SOC among the fractions were soil texture, bulk soil
C ∕ N ratio, total SOC content and pH. For some regions, the drivers were
linked to the land-use history of the sites. Arable topsoils in central and southern Germany were found to contain the
highest proportions and contents of stable SOC fractions, and therefore have
the lowest vulnerability to SOC losses. North-western Germany contains an
area of sandy soils with unusually high SOC contents and high proportions of
light SOC fractions, which are commonly regarded as representing a labile
carbon pool. This is true for the former peat soils in this area, which have
already lost and are at high risk of losing high proportions of their SOC
stocks. Those “black sands” can, however, also contain high amounts of
stable SOC due to former heathland vegetation and need to be treated and
discussed separately from non-black sand agricultural soils. Overall, it was
estimated that, in large areas all over Germany, over 30 % of SOC is
stored in easily mineralisable forms. Thus, SOC-conserving management of
arable soils in these regions is of great importance.
Les boissons dans "Les Entretiens des cafés de Paris" du chevalier de Mailly
Authors: Pedrol Aguilà Marina
Published: June 2018

Si le XVIIe siècle a vu naître et se développer la mode des salons, le XVIIIe serait le temps des cafés. En 1702, le chevalier de Mailly publie un tableau haut en couleur de ce phénomène récent mais déjà établi où l’on découvre une vaste galerie de personnages, attablés à divers cafés de Paris. Dans cet article, nous dresserons tout d’abord un catalogue des différentes boissons mentionnées dans les Entretiens pour, ensuite, observer qu’elles s’avèrent révélatrices du goût de l’époque, ainsi que du statut ou de la personnalité des clients. D’autre part, nous verrons que ces consommations, selon qu’elles soient bues modérément ou pas, acquièrent un rôle tantôt socialisateur tantôt destructeur.
Estudio del grado de coincidencia entre edades cronológica, dental y carpal en niños de 8 a 12 años
Authors: Mayorga Javier Mauricio , Aldana Hernández Jennifer Elizabeth , Orellana Hidalgo Gabriela Margarita , Echegoyén Rivas Katya Yamileth
Published: June 2018

El presente estudio radiográfico y clínico de tipo descriptivo observacional tuvo como objetivo general determinar el grado de coincidencia entre las edades cronológica, radiográfica dental y carpal en una población de 40 niños (20 niños y 20 niñas), cuyas edades van de los 8 a los 12 años, que cumplían con los criterios de inclusión de la investigación. Para la recolección de la información se tomó peso, talla y radiografía panorámica y carpal de la mano derecha de los 40 participantes, quienes además fueron objeto de inspección clínica dental y de toma de fotografías clínicas intraorales. Para determinar la edad carpal se utilizó como referencia el Atlas de Greulich y Pyle; para la obtención de edad radiográfica, el método Demirjian; la información sobre talla y peso fue utilizada para determinar talla e imc según edad con ayuda de gráficas de crecimiento estandarizadas y de acuerdo con el promedio de crecimiento en población salvadoreña. A través de la prueba de T de Student se identificó que, con respecto a las medias obtenidas, hubo diferencia significativa entre las edades radiográfica dental, carpal y cronológica en la mayoría de la población estudiada. Además, se observó que la edad carpal se encuentra en la mayoría de niñas, con respecto a la edad cronológica; sin embargo, en los niños se encuentra disminuida. Únicamente se identificó 20% en cada uno de los grupos de población estudiada con recambio dentario precoz.CREA CIENCIA Vol. 11 No 1-2 ISSN 1818-202X enero-diciembre 2017, p. 40-52
Alteraciones de las funciones respiratoria y cardíaca en tabaquistas
Authors: Herrera de Hurtado Liliam , Salinas de Romero Ruth Elizabeth
Published: June 2018

El hábito de fumar es cada vez más frecuente entra la población, especialmente en los países en desarrollo, y se prevé que incrementará en los próximos años, con lo cual también aumentará la mortalidad asociada. Ante esto, algunas instituciones enfocan la atención en este tipo de población, pero es necesario, aparte de brindarles el tratamiento adecuado para abandonar el consumo de tabaco, implementar medidas de detección temprana para diagnosticar ciertas patologías que se pueden presentar con mayor frecuencia en los tabaquistas. Objetivo. Establecer las alteraciones de las funciones respiratoria y cardíaca en pacientes tabaquistas. Materiales y Métodos. Enfoque cuantitativo, con diseño descriptivo, transversal, observacional, retrospectivo. La muestra fue de 91. Resultados. La proporción de las alteraciones obstructivas de la pequeña vía aérea fue de 40.7%; el 29.7% presentaba obstrucción leve; el 58.8%, moderada, 13.5%, severa. El 13.2% presentó alteraciones de la gran vía; de estos, el 33.3% fueron casos de obstrucción leve y el 66.7% de moderada. El 40% de la población presentó enfermedad pulmonar obstructiva crónica (epoc), de los cuales el 92.5% se encontraba en estadio cero y el 7.5% en epoc moderada. El 5.5%, presentó bloqueo de rama derecha y el 1.1%, hipertrofia de ventrículo derecho. Conclusiones. La epoc en el estadio cero y la obstrucción moderada de la pequeña vía aérea fueron las alteraciones de la función respiratoria que predominaron en la población de estudio. Las alteraciones de la función cardíaca se presentaron en menor proporción, predominando los bloqueos de la rama derecha del haz de His.CREA CIENCIA Vol. 11 No 1-2 ISSN 1818-202X enero-diciembre 2017, p. 60-66
Need Analysis: An Invaluable Step for Successful Autonomous Learning
Authors: Sultana Sharmin
Published: June 2018

English as a lingua franca now requires the Bangladeshi people to learn this global language with the current demands of the competitive world. What is widely accepted is that a vast majority of Bangladeshi graduates are neither capable to stand out globally as efficient communicators in English nor accomplished enough to meet the challenges of the real world which implies that there are some short comings with the fulfillment of their needs. Hence, the paper investigates the complex world of multi-faced needs of the students at tertiary level, and highlights core consideration for analyzing these needs through a keen eye on the roots of problems. The research combines not only qualitative but also quantitative methods where research paradigm is pragmatic. Finally, the paper shows that need analysis can certainly be invaluable in successful implementation of autonomous learning among students enabling them to take responsibilities of learning in their own hands.
Analysis the Educational Factor of Graduate Students from a Bachelor’s Degree in English as a Foreign Language
Authors: Astrid Ramirez Valencia , Isabel Borja-Alarcon , Magnolia Ramirez Valencia
Published: June 2018

This article seeks to raise awareness about the impact of graduate students from an undergraduate English program at a public university, from 2011 to 2015, in the geographic scope field. Once they have completed their educational process, which emphasizes on English as a foreign language as well as on the pedagogical and research fields.The main purpose of this paper is to analyze the impact of graduate students from an English teaching program to determine the possible weakness or strengthens that let us consider some modifications in the curriculum that currently educates future teachers.To achieve this purpose, it was necessary to establish a study of these future teachers. As a consequence, an analysis was carried out on the data collected by using interviews, applied to the population.This study showed the high level of employability achieved by the students from the Bachelor’s degree in English, once they finished their studies. It was also observed, that there was a low occupancy in the research field, regardless of being one of the emphases of the curriculum offered by this academic program.Despite this achievement, it is necessary to ask about the perception of employers on the graduates and their employability, as well as the effectiveness of their learning process and their level of performance in the educational field, as a global teacher.
GGR (Geranylgeranyl Reductase) Expression Affects the Allelopathic Response to Arabidopsis Allelochemicals
Authors: Silva Debora Almeida Alcântara da , Toledo Juliane Laner de , Pierdoná Flaviani Gabriela , Alves Gabriel Sergio Costa , André Michelle de Souza Fayad , Pires Natalia Faustino , Cipriano Thaís De Moura , Torres Fernando Araripe Gonçalves , Silveira Conceição Eneida dos Santos , Aragão Francisco José Lima , Pereira Luiz Alfredo Rodrigues
Published: June 2018

Allelopathy involves the release of compounds into the environment that affects the growth and development of other organisms. This phenomenon may lead to the production of compounds less harmful to the environment than traditional herbicides used in weed control. In plants, terpenes have been identified as components of allelochemicals and are synthesized by enzymes named as geranylgeranyl diphosphate synthases (GGPPS). There are about 12 GGPPS genes in Arabidopsis, among which is GGR. This work aims to study the association between the expression levels of GGR and the allelopathic response of sesame seedlings to Arabidopsis leaf extracts. Hence, the GGR gene was inserted into Arabidopsis with the purpose to investigate the allelopathic effects of GGR expression levels on sesame seedlings. GGR expression levels were quantified by RT-PCR in both transgenic and non-transgenic [wild-type (WT)] lines. It has been observed that both wild-type and GGR expressing transgenic lines inhibited the growth of sesame seedlings. However, it is noteworthy that the phytotoxicity of extracts from GGR lines were greater than WT extracts. RT-PCR analysis of GGR expression revealed that WT plants had higher levels of GGR expression than GGR transgenic lines, which suggests that a homologous-dependent gene silencing (HDGS) occurred in GGR lines. GGR is part of an enzyme complex that works as a hub that determines the types of terpenes produced in Arabidopsis chloroplasts. The present data indicates that decreases in GGR expression may have favoured the production of terpenes with stronger allelopathic capacity in Arabidopsis leaves.
Management of Meloidogyne javanica in Okra Using Compost of Pequi Fruit Waste
Authors: Silva Fabiola de Jesus , Ribeiro Regina Cássia Ferreira , Xavier Adelica Aparecida , Santos Neto José Augusto , Silva Claudia Maria da , Mizobutsi Edson Hiydu
Published: June 2018

Pequi waste added to soil can lead to promising results in the management of plant nematodes. This study evaluated the effect of organic compost of pequi fruit waste in the control of Meloidogyne javanica in okra plants. The compost was comprised of cattle manure, sugarcane straw, and pequi rind waste in the ratio 1:1:1. Treatments were five doses of organic compost (0, 5, 10, 20, and 30 g dm-3) and two additional controls: manure (20 g dm-3) and mineral fertilizer (100 mg dm-3 of N), arranged in randomized block design with 10 repetitions. Different treatments were incorporated into pots containing 3 dm-3 of sandy soil infested with 5,000 eggs of M. javanica. Seedlings were transplanted five days later, and evaluated after 60 days of transplanting. Organic compost with pequi waste incorporated to soil increased shoot dry weight and root weight, and reduced the number of egg masses, galls and eggs of M. javanica per gram of root, and reproduction factor. Doses of 20 and 30 g dm-3 increased plant development and reduced the reproductivity of M. javanica compared to mineral fertilizer.
Morphometric Characterization and Seed Dormancy Overcoming of Sapindus saponaria L.
Authors: Neves Maria Inajal R. S. das , Araújo Neto João C. de , Ferreira Vilma M. , Silva Clissia B. da , Melo Júnior João L. A. , Melo Luan D. F. A. , Farias Aristeia S. , Galvão Elaine R. , Silva Vinicius S. G. da
Published: June 2018

S. saponaria L. is a Brazilian native arboreal species, with relevant ecological importance in the recovery of degraded and marginal areas. The objectives of the present study were to characterize morphometrically Sapindus saponaria L. seeds, to extract and to quantify oil content, establish the percent composition of fatty acids; to describe their different post-seminal stages; to describe the different post-seminal stages, as well as to evaluate the germinative performance of the seeds as a function of different treatments to overcome dormancy. Seeds were evaluated as to water content and biometric length and width. The extraction and quantification of the seed oil was obtained by the solvent extraction method using the Soxhlet extractor system. Regarding the post-seminal development, some processes triggered during growth and development of the seedlings were evaluated. The treatments for dormancy overcoming were: mechanical scarification, chemical scarification with sulfuric acid for 5, 10, 20, 30 and 40 minutes, immersion in hot water (80 ºC) until reaching room temperature, immersion in distilled water at room temperature for 24 hours and intact seeds (control). The seeds were evaluated for germination, velocity, medium time, synchrony and germination uncertainty. The design was a completely randomized design with four replicates of 25 seeds per treatment. The seeds present on average 10.3 mm in length and 10.2 mm in width with hygene-cryptocoledonar germination. The oil content found in the seeds was 7.25%, most of which was composed of unsaturated fatty acids (78.9%). The highest values of germination occur when the seeds are immersed in sulfuric acid for 30 minutes.
To Assess the Nutritional Quality of Triticale Based Product Medicated and Non-Medicated Health Powder
Authors: Sonkar Seema , Yadav Shraddha , Bhel Rishi , Bishnoi O. P.
Published: June 2018

Triticale is a more recent development in the field of cereals, that is a man made cereals created by crossing wheat and rye, compared to oats and barley, which have long histories, triticale is between 40 and 50 years old. Triticale is hybrid of wheat (Triticum) and rye (Scale) first bread in laboratories during the late 19th century in Scotland and Germany. When crossing wheat and rye, wheat is used the female parent and rye is the male parent. The resulting hybrid is sterile and must be treated with colchicines to induce polyoidy and thus the ability to reproduce itself. High quality grain, conditioning products with desirable properties and nutritional value, determines the use of triticale for consumption. Therefore, more and more attention is paid in triticale breeding for its quality, to obtain highly yielding, but also technologically advantageous varieties. The aim of this research was to evaluate nutritional quality and sensory properties of triticale based product that are – Medicated Health Powder which are made from germinated grain triticale, wheat, pearl millet, Beet root ashwagandha, safed musli and steavia powder and Non– Medicated Health Powder which are made from germinated grain triticale, wheat, pearl millet, and steavia powder. The result of the nutritional analysis indicated that the nutritional composition of Medicated health powder are moisture -8.5, ash -2.20, protein- 6.59 and iron-1.82 gm. Non-Medicated health powder are moisture -8.7, ash -1.89, protein- 6.36 and iron-1.71 gm. Regarding sensory properties, these products were evaluated on sensory parameters using nine point hedonic rating scale. Sensory score for Medicated Health Powder for appearance 9.0, texture 8.4 color 8.2, flavor 8.0 and overall acceptability is 9.0. and Non-Medicated Health Powder for appearance 9.0, texture 8.8 color 8.4, flavor 8.8 and overall acceptability is 9.0. A sensory quality of products (Medicated health powder and Non- medicated health powder) was monitored during storage and was found stable for 3 months. Medicated and Non- medicated health powder health powder is recommended for diabetic patients and in cronic heart disease.
Estratégia de Marketing verde: da missão à comunicação
Authors: Granero Arlete Eni , Couto Tatiana Cione
Published: June 2018

Esse estudo tem como objetivo levantar ações de comunicação da esfera privada nos programas de marketing de prevenção e conscientização ambiental, incluindo suas relações com as demais esferas do processo de criação e implantação de atividades, avaliando a coerência da postura da empresa desde a sua missão, visão, valores até o posicionamento no mercado. A metodologia utilizada foi à revisão da literatura e a pesquisa exploratória de dados secundários. O resultado apresenta um panorama qualitativo de ações de marketing verde coerente a partir da cultura da empresa, presentes na sua orientação, na visão de futuro, estratégias e plano de ação.
Argumentos dispositivos: o pathos do logos
Authors: Pinto Julio
Published: June 2018

O artigo propõe uma aproximação entre as noções de dispositivo (Foucault, Agamben) e o conceito de suadissigno (argumento semiótico). Discute-se a presentificação da experiência como corolário do predomínio da razão sensível – primeireza, em termos semióticos –, como elemento de um dispositivo do imaginário social (terceireza, portanto, dentro do domínio do logos) que faz do pathos uma sutil avenida para criação de mentalidades.
O PORTO DE FLORIANÓPOLIS: DESENVOLVIMENTO ECONÔMICO DE UMA OCUPAÇÃO ESTRATÉGICA
Authors: Da Conceição Milton Luz
Published: June 2018

Este texto manifesta uma característica especial do processo de ocupação e urbanização da Ilha deSanta Catarina. A fundação de cidades no processo português de urbanização tem uma motivaçãoeconômica; na ocupação da Ilha de Santa Catarina, no entanto, a motivação foi estratégica militar.Passada a fase de ocupação defensiva, tendo o polinucleamento como estratégia, o núcleo inicial,Nossa Senhora do Desterro, se destacou sobre todos os outros pelas características que a originaram,de ser um porto natural em águas mansas, próximo ao continente. Seguimos dentro do processode formação da atual cidade de Florianópolis, sucessora dessa ocupação inicial, e detentora demorfologia que denuncia essa origem.
SOMBREAMENTO E ILUMINAÇÃO NATURAL NA ANÁLISE DA PROTEÇÃO SOLAR
Authors: Marques Matheus Peixoto de Paula , Leder Solange Maria
Published: June 2018

Este trabalho propõe uma metodologia para análise do desempenho de elementos de proteção solara partir do percentual de sombreamento (PS), do percentual de iluminação do céu visível (PICV) e dailuminância natural útil (INU). O método proposto permite identificar intervalos de valores do PS edo PICV que ao serem aplicados no projeto de elementos de proteção solar permitem, além de umadequado sombreamento das aberturas, melhor desempenho da iluminação natural no ambienteinterno.
Modelagem de recursos da geodiversidade como suporte às práticas ritualísticas de comunidades de matriz africana / Modeling resources of geodiversity to support ritualistic practice of communities of African origin
Authors: Braga Liliane Rodrigues de Oliveria , Machado Maria Marcia Magela , Ruchkys Úrsula Azevedo
Published: June 2018

Os elementos naturais constituem a essência das religiões de matriz africana. A supressão de áreas verdes, tidas como potenciais espaços sagrados tem afetado diretamente esta tradição. Este artigo apresenta o resultado de uma modelagem, baseada na relação dos saberes tradicionais de comunidades de candomblé com os recursos naturais, para identificação de potenciais espaços naturais sagrados. O município de Santa Luzia- MG foi escolhido como estudo de caso. A metodologia foi baseada em análise de multicritério. As variáveis e pesos correspondentes considerados foram apontados pelos líderes das comunidades por meio da aplicação de questionário. As bases cartográficas utilizadas tem como fonte o Instituto Mineiro de Gestão da Água; Imagem do Satélite Landsat; CPRM – Serviço Geológico do Brasil; Centro Nacional de Pesquisa e Conservação de Cavernas e o Instituto Brasileiro de Geografia e Estatística. A análise resultou em um mapa de potencialidade de uso de espaços para práticas ritualísticas externas, dividido em baixa, média e alta. Os espaços naturais já utilizados pelas comunidades foram espacializados no mapa e coincidiram com as áreas de alto potencial, validando a análise. Espera-se que os resultados obtidos possam se constituir um instrumento de visibilidade e valorização das comunidades de candomblé, além de subsidiar o planejamento municipal e a criação de políticas públicas.Palavras-Chave: comunidades de matriz africana, geodiversidade, rituais, geoprocessamento.AbstractNatural elements form the essence of religions of African origin. Suppression of green area, considered as potential sacred spaces, has directly affected this tradition. This article presents the results of a modeling, based on the relationship of traditional knowledge of Candomblé communities to natural resources, to identify potential sacred natural sites in Santa Luzia, MG. The methodology was based on multiple criteria analysis. The variables considered and corresponding weights were expressed by community leaders through a questionnaire. The cartographic databases used were provided by Institute of Water Management of Minas Gerais; Landsat Satellite Image; CPRM - Geological Survey of Brazil; National Center for Research and Conservation Caves and Brazilian Institute of Geography and Statistics. The result was a map of potential areas for outdoor ritual practices, classified into low, medium and high. The natural areas already used by communities were spatially map and coincided with the high potential areas, validating the analysis. It is expected that the result obtained may constitute a visibility tool of Candomblé communities, in addition to supporting the municipal planning and the creation of public policies. Keywords: communities of African origin, geodiversity, rituals, geotechnologies.
A paleotoca da Serra do Gandarela e seu potencial como geossítio do Geoparque Quadrilátero Ferrífero, Minas Gerais / The paleoburrow of the Gandarela Mountains and its potential as a geosite of the QF Geopark, MG
Authors: Ruchkys Úrsula Azevedo , Bittencourt Jonathas De Souza , Buchmann Francisco Sekiguchi de Carvalho e
Published: June 2018

A paleotoca registrada na Serra do Gandarela, Quadrilátero Ferrífero (MG), constitui um importante registro paleontológico da megafauna extinta de mamíferos, semelhante às ocorrências prévias em formações ferríferas no norte de Minas Gerais e em litologias diversas de outras regiões do país. Destaca-se pelas dimensões de 340m de comprimento, o que faz dela a maior paleotoca encontrada até o momento. Este trabalho, realizado sob os auspícios do Ministério Público de Minas Gerais, tem como objetivo avaliar o valor científico, pedagógico e educacional associado a esta ocorrência, visando sua inserção como geossítio do Geoparque Quadrilátero Ferrífero. Esta análise preliminar sugere que a paleotoca da Serra do Gandarela é um exemplo de patrimônio paleontológico com valores que legitimam plenamente sua proposição como sítio paleontológico/geológico do Geoparque Quadrilátero Ferrífero.Palavras-Chave: Paleotoca, megafauna extinta, Serra do Gandarela, Geoparque Quadrilátero Ferrífero. ABSTRACTThe paleoburrow in the Gandarela Mountains, Quadrilátero Ferrífero (MG) is an important record of the extinct megafauna of mammals. This is similar to previous occurrences in iron formations in northern Minas Gerais and in several rocks in other regions of Brazil, but stands out for the dimensions of length 340m, making it the largest paleoburrow found so far. This work has been carried out under the sponsorship of the Minas Gerais Public Prosecutor's Office. The scientific and educational significance of this fossil occurrence is assessed, aiming at its inclusion as a geosite of the Quadrilátero Ferrífero Geopark. This preliminary analysis suggests that this paleoburrow is a valuable example of paleontological heritage, what fully legitimates its proposition as a paleontological/geological site of Quadrilátero Ferrífero Geopark.Keywords: Paleoburrow, extinct megafauna, Gandarela Mountains, Quadrilátero Ferrífero Geopark.
Turismo, produção do espaço e urbanização:evolução do uso e ocupação do solo de Lavras Novas, Ouro Preto-MG / Tourism, production of space and urbanization: evolution of the land use of Lavras Novas,Ouro Preto-MG
Authors: Varajão Guilherme Fortes Drummond Chicarino , Diniz Alexandre Magno Alves
Published: June 2018

Este trabalho visou retratar a evolução do uso e ocupação do solo, a partir da década de 1960, da região de Lavras Novas, distrito de Ouro Preto-MG, estabelecendo, quando possível, as relações de causalidade entre as transformações identificadas com as atividades antrópicas de cada época. Até a década de 1980, as principais modificações identificadas se situaram no entorno da área urbana, relacionadas eminentemente às atividades de uma siderúrgica multinacional e ao extrativismo vegetal. A partir de 1990, as mais evidentes transformações se deram no núcleo urbano, como o abrupto aumento da área edificada, fundamentalmente associadas ao crescimento do turismo e devido ao dinamismo do colar perimetropolitano de Belo Horizonte. Neste sentido, foi feito uma sucinta revisão bibliográfica sobre urbanização e turismo, de modo que este artigo contribui para o esclarecimento de uma das múltiplas faces deste fenômeno que tem assumido uma crescente importância nos últimos tempos. Palavras-chave: Turismo; Urbanização; Uso e Ocupação do Solo; Lavras Novas. AbstractThis study aimed to portray the evolution of the land use from 1960 onwards in the region of Lavras Novas, district of Ouro Preto-MG, establishing whenever possible the causal relationship between these land transformations and the human activities of each period. Until the 1980s, the major changes identified were located in the areas surrounding the urban center and were predominantly related to the activities of a multinational metal mill and to the extraction of plants. Since 1990, the most obvious changes occurred in the urban core, like the sharp increase of the built-up area, primarily associated with the tourism growth and the dynamism of the perimetropolitan space of Belo Horizonte. Based on this, a brief review of the literature concerning urbanization and tourism was made, so that this paper contributes to the clarification of one of the multiple facets of this phenomenon that has assumed an increasing importance in recent times. Keywords: Tourism; Urbanization; Land Use; Lavras Novas.
Aprender a dibujar los contornos del país: Vínculos entre la enseñanza del dibujo escolar y los conocimientos geográficos en el Buenos Aires finisecular (1880-1900) /Learning to Draw the Contours of the Country (...)
Authors: Dosio Patricia Andrea
Published: June 2018

En este artículo se indagará la contribución de la materia Dibujo a la transmisión de saberes sobre el espacio en la escuela elemental finisecular argentina a partir de la enseñanza del dibujo geográfico, tópico que, en los inicios del sistema de instrucción pública, fue parte de los contenidos de esta asignatura. Palabras clave: Dibujo - enseñanza - geografía - escuela primaria - Argentina AbstractThis article discusses the contribution of Drawing to the transmission of knowledge about space in argentine elementary education through the geographic drawing, topic that, at the beginning of the public school system, was part of the school subject Drawing.Keywords: Drawing - education - Geographic - elementary school – Argentina
O Largo Pateo do Collegio e o súbito encanto com o lugar / The “Largo Pateo do Collegio” and the sudden allurement to the place
Authors: Fortunato Ivan
Published: June 2018

Com base na Geografia Humanista, neste artigo apresenta-se o Pateo do Collegio (o lugar) a partir de uma perspectiva de encantamento, de aproximação afetiva, procurando esclarecer que a escolha do Pateo enquanto lugar de pesquisa não foi feita por conta de suas qualidades históricas ou de local sagrado, mas, por causa de um repentino fascínio sentido quando, durante um momento de flanar e deixar-se perder pelo Centro Histórico da cidade de São Paulo, espontaneamente descobriu-se o lugar. O encanto sentido subitamente suscitou a vontade de conhecê-lo empiricamente, mas também geográfica e historicamente. Ao percorrê-lo diversas vezes, descobriu-se nomes distintos, usos variados e um ritmo diurno-noturno muito bem delineado. Apresenta-se indícios a respeito da essência histórica e simbólica do lugar, ao mesmo tempo em que se buscou revelar os aspectos que o tornam um lugar de acolhimento, mas, também emblemático. Ao final, espera-se demonstrar a importância dos lugares para a vida, ao mesmo tempo em que motive o reconhecimento da importância do sentido de lugar como mobilizador da existência e das experiências humanas.Palavras–chave: lugar, geograficidade, Pateo do Collegio, Centro Histórico de São Paulo.Abstract Based on the Humanistic Geography, this article presents the Pateo do Collegio (the place) from a charming perspective, affective approach, seeking to clarify the choice of Pateo as a place of research was not made because of its historical qualities or sacred site, but because of a sudden fascination sense when, during a time of strolling and let yourself lose the historic center of the city of São Paulo, spontaneously discovered the place. The charm sense suddenly raised the desire to know it empirically, but also geographically and historically. To go through it several times, we find different names, different uses and a daytime-night rhythm very well designed. Here clues as to the historical and symbolic essence of the place, while it sought to reveal the aspects that make it a place of welcome, but also emblematic. At the end, we hope to demonstrate the importance of the places for life at the same time motivate the recognition of the importance of the sense of place as a mobilizer of existence and of human experiences.Keywords: place, geographicity, Pateo do Collegeo, Sao Paulo Historic Center.
Federalismo, emancipação e dependência de municípios: uma análise da cidade de Santa Cruz de Minas-MG / Federalism, emancipation and dependence of municipalities: an analysis of Santa Cruz de Minas city-MG
Authors: Favato Deivid Dener Pereira Coelho , Toledo Márcio Roberto
Published: June 2018

O presente artigo trata da questão da forma federalista de organização do Estado Brasileiro e suas implicações na organização político-econômica em território nacional. Uma das possibilidades que apresenta esta forma de estado é a da autonomia de seus entes federados, a nível municipal. Em âmbito municipal esta consideração resulta em processos de emancipação de distritos, com vistas a adquirir o status de município autônomo. Entretanto a emancipação sem critérios adequados de avaliação socioeconômica dos distritos envolvidos acaba por gerar municípios pequenos, muitos abaixo de 10 mil habitantes e “dependentes” de repasses do governo para sanarem suas contas públicas. Este artigo articula este debate e apresenta um breve estudo de caso sobre a dependência de repasses do governo da cidade de Santa Cruz de Minas, que emancipou-se recentemente da cidade de Tiradentes e curiosamente recebe o título de a menor cidade do Brasil em extensão territorial.Palavras-chave: federalismo, emancipação, autonomia, dependência municipal, Santa Cruz de Minas.AbstractThis present article discusses the issue of federalism form of the Brazilian State organization and its implications in the political-economic organization in national territory. One of some possibilities that this form of state shows is the autonomy of its federal entities, in municipal level. In municipal field this concern results in emancipation district process, aspiring to acquire the autonomous municipality status. However the emancipation process without appropriate socioeconomics analysis criteria of the involved districts results in creation of small towns, many below 10 thousand inhabitants and “dependent” of government transfers to remedy its public accounts. This article articulates this debate and presents a short case study about the government transfers dependency of the city of Santa Cruz de Minas, that it’s emancipated recently to the city of Tiradentes and curiously receives the title of the smallest city of Brazil in territorial extension.Keywords: federalism, emancipation, autonomy, municipal dependence, Santa Cruz de Minas
Variabilidade espacial físico-química de materiais superficiais sob uma vertente de Cerrado em estágio de recuperação
Authors: Dos Santos Fabiana Cristina , Rodrigues Silvio Carlos
Published: June 2018

A distribuição dos materiais superficiais nas vertentes do ambiente de Cerrado em estágio de recuperação apresenta particularidades intrínsecas, que são relacionadas com o posicionamento topográfico, bem como com o formato e escoamento superficial da água. Todos estes aspectos também estão relacionados com a sazonalidade climática, típica deste ambiente. Os atributos físicos e químicos dos materiais superficiais relacionam-se fortemente com as características geomorfológicas, influenciadas em sua variabilidade espacial, exercendo papel preponderante na qualidade destes ecossistemas. Portanto, para o presente trabalho, foram feitas análises físicas de densidade aparente, porosidade total, textura e análises químicas dos elementos Cálcio e Potássio. Dessa forma, a caracterização da vertente através dos atributos físico-químicos, permitiu entender a relação materiais superficiais-paisagem em uma área de Cerrado em estágio de recuperação.
Avaliação da visão funcional em crianças com deficiência visual e múltipla deficiência como estratégia de apoio para professores e responsáveis
Authors: Barbosa Isabela Maria Reis , Gagliardo Heloísa Gagheggi Ravanini Gardon , Bruno Marilda Moraes Garcia , Gasparetto Maria Elisabete Rodrigues Freire
Published: June 2018

A avaliação da visão funcional é um importante recurso para oferecer informações sobre a condição visual das crianças com múltipla deficiência, tendo em vista que grande parte desse público não recebe diagnóstico visual em tempo oportuno devido às dificuldades enfrentadas para a realização da avaliação oftalmológica. A presente pesquisa teve como objetivo avaliar a visão funcional de crianças com deficiência visual associada à múltipla deficiência, por meio do método de observação do comportamento e do teste Lea Gratings. Foi realizado um estudo de caso múltiplo com abordagem qualitativa, com cinco crianças que apresentavam deficiência visual associada à múltipla deficiência. Para a coleta de dados, foi realizada entrevista com os responsáveis e com os professores e avaliada a visão funcional das crianças participantes. Na avaliação da visão funcional constatou-se que todas as crianças apresentavam valores de acuidade de grades binocular bem abaixo dos valores padrões estabelecidos pela literatura, entretanto, possuíam visão funcional útil para o desempenho de tarefas cotidianas e escolares. Foi elaborado um instrumento denominado “suporte informacional”, que foi entregue aos participantes após o término da pesquisa, com dados sobre o resultado da avaliação da visão funcional das crianças, bem como informações sobre a visão, deficiência visual associada à múltipla deficiência e avaliação da visão funcional. O estudo demonstrou que a avaliação da visão funcional foi relevante para subsidiar a proposição de orientações adequadas para o desenvolvimento das ações dos responsáveis e das práticas pedagógicas dos professores com os alunos que participaram da pesquisa.
INCLUSÃO DE ALUNOS SURDOCEGOS E A ATUAÇÃO DE PROFESSORES NO ENSINO COMUM: REVISÃO SISTEMÁTICA
Authors: Branco Ana Paula Silva Cantarelli , Leal Daniela
Published: June 2018

Esta pesquisa tem por objetivo apresentar uma revisão sistemática de estudos sobre a inclusão dos alunos surdocegos e a atuação dos professores e equipe de profissionais, no âmbito escolar. Optou-se por pesquisas com o formato de artigos, dissertações e teses. Utilizou-se da base de dados do Portal de Periódicos da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, para os periódicos online, e o Portal Digital de Teses e Dissertações. Selecionaram-se publicações dos últimos vinte anos, ou seja, de 1996 a 2016. Combinaram-se aos critérios anteriores, os descritores: Surdocegueira, Educação Especial, Deficiência, Aprendizagem, Inclusão, Escola, Professor, Ensino, Docência e Estratégias de Ensino e seus termos correlatos na língua inglesa. Após a seleção, por meio da leitura do título e resumo, encontraram-se 28 artigos em que 03 foram analisados. A busca pelas teses e dissertações resultaram em 11 pesquisas e 06 foram analisadas por estarem relacionadas ao objeto do estudo. A revisão possibilitou a análise de pesquisas no âmbito nacional, no geral, e 01 internacional. Foram analisados os objetivos, amostras, tipos de estudo, instrumento e ênfase nos principais resultados. Os estudos implicaram em ausência de ações planejadas e fragmentação das atividades do Atendimento Educacional Especializado, bem como falta de formação de profissionais professores e guias-intérpretes especializados na prática pedagógica ao aluno surdocego. Conclui-se que se faz necessário criar possibilidades para promoção de formação continuada em serviços a fim de oportunizarem aos professores de salas de recursos, professor de sala comum e guias-intérpretes ações articuladas entre suas práticas cotidianas.
CROSSLINKED AND FILLED COMPOSITES BASED ON POLYOLEFINS
Authors: Mammadli Ulviyya M.
Published: June 2018

The paper gives an overview of literary material of a number of authors on the problem of the preparation of modified polyolefins during the crosslinking process. It is shown that materials based on polyolefins, characterized by increased heat-resistance favoring improvement of complex of technical requirements for light resistance, reliability, manufacturability in respect to the production and use of cable-conduction products. In particular, experimental data are presented on the use of organosilicon tin carboxylate in order to obtain products with the best quality characteristics. The results of theoretical and experimental investigations of the influence of formulation of polyolefin compositions on the kinetics of the crosslinking process and also on rheological and thermophysical properties are presented. The principal possibility of studying the influence of the irradiation dose on the regulation of the process of changing the structure of composites is considered.As shown by a number of authors, this method makes it possible to purposefully approach the development of crosslinked composite materials with predetermined properties. The method of radiation-chemical cross-linking compares the structure of the polymer base in the presence and without different types of fillers in highly filled composites. The data on the effect of radiation cross-linking conditions on the mesh density and the mechanical properties of cross-linked polyethylene at high temperatures are presented. The data on the chemical stability of cross-linked polyethylene to the action of various chemical reagents such as acetone, benzene, toluene, carbon tetrachloride, diethyl ether, benzene-76 and lubricants are given. One of the important circumstances in the study of the structure and properties of polymer composites is the possibility of mathematical modeling of viscoelastic compliance of thick-cross-linked polymers in correlation with the methodology of its theoretical parametric identification with subsequent prediction of the results of the thermomechanical experiment.Forcitation:Mammadli U.M. Crosslinked and filled composites based on polyolefins. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N6. P. 4-16
TYPES OF ACTIVE CENTERS ON SURFACE OF PROMOTED IRON OXIDE CATALYST
Authors: Dvoretskii Nikolai V. , Anikanova Lyubov G. , Malysheva Zoya G.
Published: June 2018

The phase and chemical composition of compounds in the potassium-iron-oxygen system in a wide range of molar ratios of potassium and iron was studied by X-ray phase analysis and atomic absorption spectroscopy. The catalytic properties and the mass fraction of coke deposits on ferritic systems of various composition are determined. It has been shown that at least two types of active sites are present on the surface of the iron oxide catalyst. The dehydrogenation centers include oxygen ion, ions of a promoting alkali metal, and ions of bivalent and triply charged iron, between which electron exchange takes place. Most probably such center is realized in the structure of potassium-polyferrite (K2Fe2+Fe3+10O17). The coke formation centers contain an unpromoted cluster consisting of oxygen ion and iron (III) ion, are realized in Fe3O4 and KFe11O17. Coke deposits on the surface of the catalyst block non-selective active sites and increase the selectivity of action. The probability of realization of clusters corresponding to the dehydrogenation centers is three orders of magnitude higher than in the places of phase contact, the aggregate of which contains the whole set of ions corresponding to dehydrogenation centers, for example, "magnetite + potassium monoferrite". The pure potassium β"-polyferrite provides an optimal concentration of selective centers on the surface of the catalyst, operates highly efficiently in the absence of negative external influences (catalyst re-recovery, corrosion reaction of the reaction medium, poisoning effect). Individual b²-polyferrites, like any catalytically active phase, are unstable, however, being in equilibrium with potassium monoferrate and magnetite, it is able to operate effectively for a long time and to withstand the negative effects of redox properties of the surrounding reaction medium. The presence of potassium monoferrite in the catalytically active system ensures the polyfunctionality of the action of contact, i.e. ability to self-regeneration. It is likely that in the structure of potassium monoferrite, centers for preventing coke formation and annealing of coke are realized, containing oxygen ion, iron ion, and alkaline promoter.Forcitation:Dvoretskii N.V., Anikanova L.G., Malysheva Z.G. Types of active centers on surface of promoted iron oxide catalyst. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 6. P. 61-68