scholarly journals Relações morfométricas para Copaifera langsdorffii (Desf.) Kuntze na região norte de Minas Gerais, Brasil

2020 ◽  
Vol 8 ◽  
pp. 01
Author(s):  
Caio Ferreira da Silva ◽  
Drauzio Correia Gama ◽  
Lais Almeida Araújo ◽  
Jean Barcello Xavier Bahia ◽  
Vinícius Orlandi Barbosa Lima
Keyword(s):  
Minas Gerais ◽  
Northern Region ◽  
Economic Importance ◽  
Crown Area ◽  
Crown Diameter ◽  
Breast Height ◽  
Great Economic Importance ◽  
Minas Gerais State ◽  
Copaifera Langsdorffii ◽  
Positive Correlations

Copaifera langsdorffii specie occurs throughout Brazil and is of great economic importance, mainly due to its production of oil-resin used for various pharmacological purposes. The objective of this study was to analyze the morphometric relationships in C. langsdorffii stand in northern region of Minas Gerais state, Brazil. Twenty trees were randomly sampled and were measured: stem circumference at 1.3 m height, total height (Ht) and crown diameter (CD). Morphometric indices were estimated. Correlations between dendrometric and morphometric variables were obtained through the Pearson matrix. The morphometric relations of crown proportion (CP), crown area (CA), formal of crown (FC), degree of slenderness (DS), salience index (SI), coverage index (CI) and vital space (VS) presented values of 15.26%, 25.06 m², 1.47, 16.35, 21.70, 0.47 and 7.01, respectively. Strong positive correlations were found in: diameter at breast height (DBH) in relation to CD and CA; Ht with crown proportion (CP) and DS; the formal of crown (FC) with the CI and VS, and between the CI and VS. The morphometric indices made it possible to understand the few magnitude of stand variation. The species can be characterized as facilitating management.

scholarly journals SARS-COV-2 genomic surveillance in the Brazilian Western Amazon region: evolutionary history of epidemic dissemination and genetic signature in Rondônia, Brazil

2020 ◽  
Author(s):  
Luan Felipo Botelho Souza ◽  
Felipe Souza Nogueira Lima ◽  
Tárcio Peixoto Roca ◽  
Alcione de Oliveira dos Santos ◽  
Felipe Gomes Naveca ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Federal District ◽  
Rna Replication ◽  
Minas Gerais ◽  
Northern Region ◽  
The State ◽  
Epidemic Spread ◽  
Incidence And Mortality ◽  
Minas Gerais State ◽  
History Of

Abstract SARS-CoV-2 has spread rapidly around the world, with Brazil currently considered an epicenter of the pandemic. The northern region of the country has the highest incidence and mortality rates. This study aimed to investigate information about the evolutionary history of epidemic spread and genetic aspects of strains isolated on the Western Amazon, in the State of Rondônia, Brazil. It was possible to detect a total of 22 mutations. Some of these alterations may possibly be related to effects on transmissibility, the fidelity of RNA replication, the ability of cancer patients to respond to infection, beyond a mutation that emerged after the introduction of SARS-CoV-2 in Rondônia. At least two events of introduction were detected, corresponding to the B.1 and B.1.1 European lineages. An introduction was observed possibly through Argentina, where strains originated that circulated in the Minas Gerais and Ceará Brazilian states, prior to Rondônia (B.1.), as well as through the Minas Gerais state and the Federal District, which gave rise to strains that spread to Rondônia, from the capital to more rural parts of the state (B.1.1.). The findings show the need to monitor the genetic epidemiology of COVID-19, in order to surveil the virus’s evolution, dispersion and diversity.

scholarly journals Growth and yield prediction using the modified Buckman model

2006 ◽  
Vol 30 (5) ◽  
pp. 787-793 ◽  
Author(s):  
Antonilmar Lopes da Silva ◽  
João Carlos Chagas Campos ◽  
Helio Garcia Leite ◽  
Agostinho Lopes de Souza ◽  
Pablo Falco Lopes
Keyword(s):  
Minas Gerais ◽  
Northern Region ◽  
Growth And Yield ◽  
Yield Prediction ◽  
Eucalyptus Urophylla ◽  
Model Data ◽  
Proposed Model ◽  
Minas Gerais State ◽  
Unbiased Estimates ◽  
Eucalyptus Cloeziana

A model to manage even-aged stands was developed using a modification of the Buckman model. Data from Eucalyptus urophylla and Eucalyptus cloeziana stands located in the Northern region of Minas Gerais State, Brazil were used in the formulation of the system. The proposed model generated precise and unbiased estimates in non-thinned stands.

scholarly journals EVOLUÇÃO PETROLÓGICA E ESTRUTURAL DA PORÇÃO ORIENTAL DO ESTADO DE MINAS GERAIS E SUAS IMPLICAÇÕES GEOTECTÔNICAS

1993 ◽  
Author(s):  
Antonio Gilberto Costa ◽  
Carlos Alberto Rosière ◽  
Lydia Maria Lobato ◽  
Fernando V. Laureano
Keyword(s):  
Shear Zones ◽  
Granulite Facies ◽  
Minas Gerais ◽  
Magmatic Differentiation ◽  
Metamorphic Belt ◽  
Quartz Crystals ◽  
Granulite Facies Metamorphism ◽  
Minas Gerais State ◽  
Positive Correlations ◽  
Basic Rocks

A metamorphic terrain with high-grade rocks of the Atlantic Metamorphic Belt underlies the eastern part of Minas Gerais State, from south of the town of Manhuaçu to Caratinga. This terrain comprises peraluminous gneisses, igneous and meta-igneous rocks. Granulites occur as small nucleus and vary in composition between peraluminous and basic  to intermediate, the latter represented by enderbitic mobilizate. Their formation, as well as that of migmatites of granitic composition, is considered to be related to mafic and ultramafic intrusions. In basic granulites, garnet-bearing mineral assemblages, with the development of corona textures, attest the effects of granulite facies metamorphism, although igneous assemblages and textures are still well preserved. Retrograde alteration assemblages are locally preserved. Despite of the diversity of metamorphic  phenomena in this area, T and P calculations reveal consistent results. Temperature and pressure calculations were undertaken in basic granulites slightly affected by the retrograde process. Using Fe +²/Mg exchange between garnet and ortopyroxene as geothermometers  and the exchange reaction:  An +En = 2/3Pyr + 1/3Grs + Qz as geobarometers peak metamorphic temperatures in the range of 660 to 760°C, at 4,8 to 6,6 Kbar are obtained. Mineral, textural and geochemical evidences indicate that the  metamorphic conditions have changed with time and suggest that the formation of the granulites is caused by the underplating of magmas, probably mantle-derived, at the base of the crust. Several rations between major, trace and rare earth elements have been employed. The basic rocks are similar in composition to tholeiites generated in within-plate tectonic settings. Positive correlations netween K2O and SiO2 and negative between MgO and SiO2 in fresh gabbro-noritic rocks and enderbites indicate magmatic differentiation. The geochemical character of altered basic rocks displays an unsystematic dispersion in correlations diagrams. This lack of correlation coupled with field and petrographic suggest the effects of a late metasomatic event on these rocks. This metasomatism comprises the dispersed development of charnockitic rocks with large K-feldspars and quartz crystals. Later dynamic processes gave place to subvertical shear zones with a well defined foliation.

scholarly journals CROWN AREA AND TRUNK DIAMETER RELATIONSHIP FOR TREE SPECIES AT A MIXED-ARAUCARIA NATURAL FOREST IN THE MID-SOUTHERN PARANA STATE, BRAZIL

FLORESTA ◽  
2011 ◽  
Vol 41 (1) ◽  
Author(s):  
Carlos Roberto Sanquetta ◽  
Ana Paula Dalla Corte ◽  
Aline Daniele Jacon
Keyword(s):  
Tree Species ◽  
Standard Errors ◽  
Tree Crown ◽  
Residual Distribution ◽  
Crown Area ◽  
Trunk Diameter ◽  
Crown Diameter ◽  
Breast Height ◽  
Best Fitting ◽  
The Relationship

This paper analyzed the relationship between crown area and diameter at breast height of tree species in a Mixed-Araucaria Forest in mid-southern Parana State, Brazil. The data come from 1 hectare plot where all trees were mapped and had their crown projection drawn in the field and transferred to computer to a SIG environment to relate to DBH. In this paper, 634 individuals >10 cm DBH were used for the analysis. Trees were separated in 5 groups: General (all species), Araucaria, Imbuia, Canelas and Others. Outliers from each were properly eliminated from the correlation analysis and regression model testing. Imbuia and Araucaria were those that showed the strongest correlations. Among the models tested, the best fitting was provided by potential function (lnAC=b0+b1(lnDAP)), with the lowest standard errors of estimate and most homogeneous graphical residual distribution. It was concluded that the relationship between crown area and trunk diameter is stronger in some cases (Araucaria and Imbuia) than when a mix of species is taken into account (Canelas, Others and all species due to the different architecture of the crowns). It is possible to estimate accurately the tree crown area from its diameter when the relationship is strong.Keywords: Araucaria; crown diameter; crown projection; modeling; regression. ResumoRelação de área de copa e diâmetro do fuste para espécies arbóreas da Floresta Ombrófila Mista no centro-sul do Paraná. Avaliou-se a relação entre a área de copa e o diâmetro à altura do peito de árvores de um fragmento de Floresta Ombrófila Mista no estado do Paraná. Os dados são de 1 hectare, onde foram locadas as projeções das copas das árvores, tratadas posteriormente em ambiente SIG para cálculo de área e relação com DAP. Foram utilizados 634 indivíduos >10 cm de DAP. As árvores foram divididas em 5 grupos: Geral, Araucária, Imbuia, Canelas e Outras. Foram encontrados outliers, que foram eliminados da análise de correlação e da modelagem. A correlação entre área de copa e diâmetro do fuste foi de 0,75 para o conjunto total. Os grupos Imbuia e Araucária apresentaram as correlações mais fortes. Dos modelos testados, o que melhor se comportou em termos de ajuste foi o potencial (lnAC = b0+b1(lnDAP)), com menores erros padrões da estimativa e distribuições gráficas de resíduos. Concluiu-se que a relação área de copa e diâmetro do fuste é mais forte em alguns casos (Araucária e Imbuia) e moderada a fraca quando avaliadas espécies com diferentes arquiteturas de copa (Canelas, Outras espécies e conjunto Geral). Nos casos de maior relação, existe a possibilidade de estimar a área de copa em função do diâmetro do tronco.Palavras-chave: Araucária; diâmetro de copa; projeção de copa; modelagem; regressão. 

Three new cave-dwelling Eukoenenia (Palpigradi: Eukoeneniidae) from limestone caves in Northern Minas Gerais state, Brazil

Zootaxa ◽  
2020 ◽  
Vol 4808 (2) ◽  
pp. 251-283
Author(s):  
MAYSA FERNANDA VILLELA REZENDE SOUZA ◽  
RODRIGO LOPES FERREIRA
Keyword(s):  
Related Species ◽  
Minas Gerais ◽  
Northern Region ◽  
Closely Related Species ◽  
Diagnostic Characters ◽  
Brazilian Species ◽  
Lateral Organs ◽  
Minas Gerais State ◽  
Species Being ◽  
Subterranean Habitat

In this paper, we describe three new Eukoenenia species from specimens collected in limestone caves in the northern region of the Minas Gerais state, Brazil. These species present different degrees of adaptation to the subterranean habitat, with Eukoenenia magna sp. nov., with 6 blades on lateral organs and body ratios very close to other troglobitic species, being the most troglomorphic among them. This species is morphologically very similar to the Brazilian troglobites E. navi, E. eywa and E. neytiri. Eukoenenia lundi sp. nov. and Eukoenenia jequitai sp. nov. are probably closely related species due to their substantial morphological resemblance. These two species are closer to E. virgemdalapa among the Brazilian species described to date. We provide a table summarizing the main diagnostic characters of the three species herein described and those of the Brazilian congeners to facilitate morphological comparisons. 

scholarly journals SARS-CoV-2 genomic surveillance in Rondônia, Brazilian Western Amazon

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luan Felipo Botelho-Souza ◽  
Felipe Souza Nogueira-Lima ◽  
Tárcio Peixoto Roca ◽  
Felipe Gomes Naveca ◽  
Alcione de Oliveria dos Santos ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Federal District ◽  
Rna Replication ◽  
Minas Gerais ◽  
Northern Region ◽  
The State ◽  
Epidemic Spread ◽  
The Third ◽  
Minas Gerais State ◽  
History Of

AbstractSARS-CoV-2 has spread rapidly around the world, with Brazil currently considered an epicenter of the pandemic. The Northern region has the second highest incidence coefficient, as well as the third highest mortality rate in the country. This study aimed to investigate information about the evolutionary history of epidemic spread and genetic aspects of strains isolated on the Western Amazon, in the State of Rondônia, Brazil. It was possible to detect a total of 22 mutations. Some of these alterations may possibly be related to effects on transmissibility, the fidelity of RNA replication, the ability of cancer patients to respond to infection, beyond a mutation that emerged after the introduction of SARS-CoV-2 in Rondônia. At least two events of introduction were detected, corresponding to the B.1 and B.1.1 European lineages. An introduction was observed possibly through Argentina, where strains originated that circulated in the Minas Gerais and Ceará Brazilian states, prior to Rondônia (B.1.), as well as through the Minas Gerais state and the Federal District, which gave rise to strains that spread to Rondônia, from the capital to more rural parts of the state (B.1.1.). The findings show the need to monitor the genetic epidemiology of COVID-19, in order to surveil the virus’s evolution, dispersion and diversity.

scholarly journals Assessment of Nursing Records of Patients Admitted to the Medical Clinic of a University Hospital from the Northern Region of Minas Gerais State / Avaliação dos Registros de Enfermagem de Pacientes Internados na Clínica Médica de um Hospital Universitário do Norte do Estado de Minas Gerais

2019 ◽  
Vol 11 (2) ◽  
pp. 390
Author(s):  
Tamara Figueiredo ◽  
Patrick Leonardo Nogueira Da Silva ◽  
Larissa Freitas Guimarães ◽  
Camilla Freitas Guimarães ◽  
Maricy Kariny Soares Oliveira ◽  
...  
Keyword(s):  
Minas Gerais ◽  
Northern Region ◽  
University Hospital ◽  
Medical Clinic ◽  
Minas Gerais State

Objetivo: avaliar os registros de enfermagem de pacientes internados na clínica médica de um hospital universitário do norte do Estado de Minas Gerais. Método: trata-se de um estudo descritivo, retrospectivo, documental, com abordagem quantitativa, realizado com 189 prontuários de pacientes internados na clínica médica de um hospital universitário durante o período de julho a dezembro de 2012. Utilizou-se um formulário como instrumento de coleta de dados. O tratamento dos mesmos se deu por meio de amostragem probabilística aleatória simples. Resultados: observou-se tempo de internação mínimo e máximo de um e 97 dias (19,58±13,65), respectivamente. Houve prevalência das conformidades nos registros de enfermagem, sendo estas: leito, anotação descritiva, data e horário, presença de rubrica e carimbo do profissional, admissão, alta e/ou óbito, checagem e letra legível. Conclusão: a presença de não conformidades observadas nos registros de enfermagem compromete a funcionalidade do registro como instrumento de qualidade.

Dragonflies and damselflies (Odonata) from the wetland of the Rio Pandeiros, northern region of Minas Gerais State, Brazil, with a description of the male ofArchaeogomphus vanbrinkiMachado (Anisoptera: Gomphidae)

2017 ◽  
Vol 20 (1) ◽  
pp. 13-26 ◽  
Author(s):  
Marcos Magalhães de Souza ◽  
Epifânio Porfiro Pires ◽  
Ângela Gomes Brunismann ◽  
Lucas Rocha Milani ◽  
Ângelo Parise Pinto
Keyword(s):  
Minas Gerais ◽  
Northern Region ◽  
Minas Gerais State

Schwingungsüberlagertes Axialformen/Superimposed Oscillated Axial Forming

2020 ◽  
Vol 110 (11-12) ◽  
pp. 838-843
Author(s):  
Philipp Müller ◽  
Bernd-Arno Behrens ◽  
Sven Hübner ◽  
Hendrik Vogt ◽  
Daniel Rosenbusch ◽  
...  
Keyword(s):  
Surface Quality ◽  
Economic Importance ◽  
Combined Effect ◽  
Wird Eine ◽  
Forming Force ◽  
Forming Process ◽  
Forming Technology ◽  
Great Economic Importance ◽  
Gear Geometry

Techniken zur Steigerung der Formgebungsgrenzen in der Umformtechnik sind von hoher wirtschaftlicher Bedeutung. In dieser Arbeit wird eine Schwingungsüberlagerung im Krafthauptfluss eines Axialformprozesses zur Ausprägung einer Verzahnungsgeometrie untersucht. Die Auswirkungen der Schwingung auf die erzielbare Ausfüllung der Zahnkavitäten werden analysiert sowie die Parameter Schmierung und Oberflächengüte der Halbzeuge in ihrer kombinierten Wirkung untersucht. Es konnte eine Reduzierung der mittleren Umformkraft sowie eine Erhöhung der Formfüllung festgestellt werden. Techniques for extending the production limits in forming technology are of great economic importance. In this research, a superimposed oscillation in the main force flow of an axial forming process to form an axial gear geometry is investigated. The effects of the superimposed oscillation on the achievable form-filling of the tooth cavities are analyzed and the parameters lubrication and surface quality of the semi-finished products are investigated in their combined effect. A reduction of the averaged forming force as well as an increase of the form-filling could be achieved.

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