Estudo de Escoamentos Turbulentos em torno de um Corpo Rombudo de Superfície Hidraulicamente Lisa ou Rugosa Utilizando o Método de Vórtices Discretos.

O presente trabalho utiliza simulações numéricas bidimensionais na realização de um estudo detalhado sobre estruturas de esteiras e dinâmica de escoamentos ao redor de um cilindro circular. Com base no conceito físico de que superfícies rugosas podem estimular o desenvolvimento da turbulência nos escoamentos, é proposto um modelo de rugosidade associado ao modelo da função estrutura de velocidade de segunda ordem adaptado ao Método de Vórtices Discretos. O modelo submalha originário de um trabalho anterior necessitou de uma correção para que os fenômenos das escalas não resolvidas da turbulência fossem apropriadamente modelados. Apresenta-se uma comparação entre os padrões de escoamentos obtidos a partir de cilindros circulares de superfície hidraulicamente lisa e de superfície hidraulicamente rugosa, para demonstrar as potencialidades do modelo de rugosidade em simular fenômenos físicos; como exemplo, discute-se a crise do arrasto. Outro exemplo de aplicação do modelo de rugosidade desenvolvido analisa as características do escoamento ao redor de um cilindro circular estacionado nas imediações de uma superfície plana, lisa e móvel. Esta tese de doutorado contribui mostrando que modelos bidimensionais de superfícies hidraulicamente rugosas reproduzem bem as características de escoamentos a altos valores do número de Reynolds

GEOGRAFIA E TRABALHO: UMA LEITURA A PARTIR DAS TRANSFORMAÇÕES TERRITORIAIS

Compreender o trabalho como categoria de análise na Geografia retrata um esforço voltado não para se reforçar as dicotomias e a fragmentação existente nas diversas áreas do conhecimento científico, mas sim de nos aproximarmos de uma abordagem interdisciplinar. Nosso intuito parte da necessidade de lançarmos na atividade investigativa um outro olhar acerca da realidade, compreendendo os sujeitos sociais, trabalhadores e trabalhadoras, entendidos, quase sempre, apenas como coadjuvantes no processo de pesquisa

Utilização de mudas de raízes múltiplas na implantação de lavouras cafeeiras

Higher production of coffee plants (Coffea arabica L.), requires abundant and deeper roots, well branched and physiologically active. However, the root grow system is a complex process, which is affected by many factors. Thus, this work aimed at to study the influence of multiple roots in the initial growth of three coffee cultivars considering the presence and absence of mulch on the planting row. The experiment was carried out at the Paineira Farm in located in the district of Bom Jesus da Penha, MG - Brazil. The experimental design was randomized in blocks with factorial scheme (2 x 3 x 2) of two types of cuttings: single and multiple rooted seedlings, three cultivars: Paraíso MG 491-1, Catuaí Vermelho IAC 99 and Catucaí Amarelo 2SL and by the presence and absence of mulch on the planting row. The parameters evaluated were the plant height (cm), the stem base diameter (mm) and number of plagiotropic branches. The results showed that plants originated from single roots presented better development in the field during the establishment of the coffee plantation. The cultivar Catuaí IAC 99 was the most sensitive, presenting reductions in the growth of the plant height, stem base diameter and the plagiotropic branches number of 22.7%, 35.2% and 52.7% respectively, when multiple rooted seedlings were considered. The use of mulch during the establishment of the coffee plantation with multiple rooted seedlings increased the growth in height of 12.6% when compared with single rooted seedlings, however with lower emission of plagiotropic branches, which are decisive for future production. Altas produções do cafeeiro (Coffea arabica L.), necessitam de raízes abundantes, profundas, bem ramificadas e ativas fisiologicamente. Devido à complexidade do processo, esse trabalho visou a verificar a influência de raízes múltiplas no crescimento inicial de plantas de três cultivares de cafeeiro, com ou sem a utilização de cobertura morta na linha de plantio. O experimento foi instalado e conduzido na Fazenda Paineira localizada no município de Bom Jesus da Penha - MG. O delineamento experimental foi em blocos casualizados em esquema fatorial (2 x 3 x 2), com dois tipos de mudas (muda com raiz única e muda com raiz múltipla), três cultivares (Paraíso MG 419-1, Catuaí Vermelho IAC 99 e Catucaí Amarelo 2SL) e pela presença e ausência de cobertura morta na linha de plantio. Avaliou-se a altura das plantas (cm), o diâmetro da base do caule (mm) e o número de ramos plagiotrópicos. Concluiu-se que plantas oriundas de mudas com raízes únicas apresentaram-se um melhor desenvolvimento na fase de implantação da lavoura cafeeira, sendo que das cultivares utilizadas, a Catuaí Vermelho IAC 99 foi a mais sensível, apresentando reduções no crescimento em 22,7%, 35,2% e 52,7% para altura de planta, diâmetro de caule e número de ramos plagiotrópicos, respectivamente, quando se utilizou mudas de raízes múltiplas. A utilização de cobertura morta na implantação de lavouras com mudas de raízes múltiplas favoreceu o crescimento em altura em 12,6% comparado com mudas de raízes únicas, porém com menor emissão de ramos plagiotrópicos decisivos para a futura produção.

Production and physicochemical characterization of genotypes of Eugenia uniflora L.

Pitanga (Eugenia uniflora L.) is an exotic fruit species of significant economic importance. However, due to genetic variability, its exploitation is hampered by the lack of homogeneous fruit production. In this scenario, this study aimed to select pitanga genotypes according to the physical and physicochemical parameters of fruits grown under semi-arid conditions. The study was developed at the Federal Rural University of the Semi-Arid Region with genotypes resulting from the open pollination of the pitanga variety ‘Tropicana”. Thirty-nine pitanga genotypes were evaluated for fruit mass, fruit length, fruit diameter, soluble solids (SS), titratable acidity (TA), ascorbic acid (AA), pH, and SS/TA ratio. The pitanga genotypes showed high variability. The clustering method separated the genotypes according to desirable traits. Genotype A12 showed the largest fruit sizes, whereas genotype A8 showed the highest SS and TA contents. Genotypes A2, A13, A34, and A39 showed fruits with the highest AT values. On the other hand, genotypes A11, A16, A45, A9, A26, and A44 showed the most significant contents of pH and SS/TA. Highlights The grouping of two genotypes depends on the environmental conditions, mainly on the effect of two genotypes per year. The analysis of principal components allows selecting the genotypes based on their desired characteristics. The physical and chemical composition of two pitanga fruits are affected by climatic conditions, genotypes and years of cultivation.Pitanga (Eugenia uniflora L.) is an exotic fruit species of significant economic importance. However, due to genetic variability, its exploitation is hampered by the lack of homogeneous fruit production. In this scenario, this study aimed to select pitanga genotypes according to the physical and physicochemical parameters of fruits grown under semi-arid conditions. The study was developed at the Federal Rural University of the Semi-Arid Region with genotypes resulting from the open pollination of the pitanga variety ‘Tropicana”. Thirty-nine pitanga genotypes were evaluated for fruit mass, fruit length, fruit diameter, soluble solids (SS), titratable acidity (TA), ascorbic acid (AA), pH, and SS/TA ratio. The pitanga genotypes showed high variability. The clustering method separated the genotypes according to desirable traits. Genotype A12 showed the largest fruit sizes, whereas genotype A8 showed the highest SS and TA contents. Genotypes A2, A13, A34, and A39 showed fruits with the highest AT values. On the other hand, genotypes A11, A16, A45, A9, A26, and A44 showed the most significant contents of pH and SS/TA. Highlights The grouping of two genotypes depends on the environmental conditions, mainly on the effect of two genotypes per year. The analysis of principal components allows selecting the genotypes based on their desired characteristics. The physical and chemical composition of two pitanga fruits are affected by climatic conditions, genotypes and years of cultivation

Translation, adaptation and validation of a learning style assessment instrument for pharmacists in Brazil / Tradução, adaptação e validação de um instrumento de avaliação de estilo de aprendizagem para farmacêuticos no Brasil

This study aims to perform the cross-cultural adaptation of the "Pharmacists' Inventory of Learning Styles" (PILS) instrument for its use in Brazil. The process involved five steps: (i) two independent translations, (ii) synthesis of said translations, (iii) back translation, (iv) review by expert committee and (v) pilot study. Discrepancies in the translations were resolved by consensus between the translators. The expert committee reviewed the semantic, idiomatic, conceptual and cultural equivalences between the original and the translated versions, suggesting changes in ten items (58%), with an agreement mean end of 92.4%. The modified version was rated by 48 people, among which were pharmacy students, residents and pharmacists, who considered it understandable and applicable. The adaptation process was successful, and the use of the instrument  as a tool for identifying learning styles is appropriate, which makes it an available resource for  continuing education and training practices of pharmaceutical professionals in the country

Produção de frutos de cafeeiros (Coffea arabica L.) em diferentes posições e orientaçoes de ramos plagiotrópicos

This paper aimed at to evaluate the fruit production in different positions of coffee plagiotropic shoot (Coffea arabica L.), during eight months. Measurements started in October 21 taking five different regions of eight shoots located in the central region of a plant belonging to the cultivar of Rubi MG 1192; located at the Coffee Section from the Federal University of Lavras. The experimental design used was random blocks disposed in factorial scheme, 2x 4x 8, composed by two positions(upper third and lower third), four orientations (east sunrise, west sunset, north and south) and eight evaluations time (from October 2005 to May 2006), totalizing 64 treatments, containing 10 replicates and one plant per plot. There was a reduction in fruit number per shoot during the development and this fact was more proeminent in shoots located in the inferior part of the plant and in period from December to January. The orientations North, South, East and West did not influence the number of fruits during the development. Com o objetivo de avaliar a produção de frutos em diferentes posições de ramos plagiotrópicos em cafeeiros (Coffea arabica L.) levando em consideração os pontos cardeais, foram feitas oito avaliações mensais, iniciadas em 21 de outubro, de todos os componentes de cinco rosetas centrais em oito ramos em 10 plantas em uma lavoura da cultivar Rubi MG 1192, instalada no Setor de Cafeicultura no Campus da Universidade Federal de Lavras. O experimento foi instalado utilizando o delineamento em blocos casualizados em esquema fatorial 2 x 4 x 8 constituído de duas posições (terço superior e terço inferior), quatro orientações (leste, oeste, norte e sul) e oito épocas de avaliações (de outubro de 2005 a maio de 2006), totalizando 64 tratamentos, com 10 repetições e uma planta por parcela. Houve acentuada redução no número de frutos por roseta do cafeeiro durante o desenvolvimento da planta, sendo essa redução mais proeminente nos ramos inferiores e no período de dezembro a janeiro. As orientações Norte, Sul, Leste e Oeste não influenciam o número de frutos por roseta durante o desenvolvimento.

University Extension experiences in the field of afforestation of the Federal University of Goiás

This work presents an overview of the main results of university extension experiences in the afforestation field of the new campus of the Federal University of Goiás (UFG) in Aparecida de Goiânia. The methodology has covered a thematic mapping elaboration, work dissemination to society and a survey, through an online questionnaire about the importance of urban vegetation to the university community, students and teachers, and external community. The results have revealed that the extension actions facilitated the activities dissemination of the UFG, encouraged the communication between the external community, and allowed to understand its perception about the topic under analysis. Thus, most of the respondents (98.3%) considers urban vegetation as something essential for the human life, and mainly, for a more pleasant climate and greater well-being. Moreover, 94.1% of the external community is interested to participate in projects that encourage the planting of trees in urban environments