oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 4 )

2018 ( 61 )

2017 ( 42 )

2016 ( 41 )

Custom range...

Search Results: 1 - 10 of 7884 matches for " Samuel;Guedes "
All listed articles are free for downloading (OA Articles)
Page 1 /7884
Display every page Item
Musculoskeletal Tuberculosis in Dermatomyositis: Association or Coincidence?  [PDF]
Andressa Silva Abreu, Geórgea Hermogenes Fernandes, Eduardo Ferreira Borba, Lissiane Karine Noronha Guedes, Jéssica Fernandes Ramos, Samuel Katsuyuki Shinjo
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2014, DOI: 10.4236/ojra.2014.41009
Abstract: Dermatomyositis is a rare idiopathic inflammatory myopathy characterized by proximal muscle weakness associated with typical skin abnormalities and compatible electromyographic finds. Tuberculosis could determine several clinical manifestations but the classic one is the lung presentation. Among the extra pulmonary manifestations of tuberculosis, the musculoskeletal form is rare and it is usually a direct extension of the bone involvement nearby. In the present study, the authors described two dermatomyositis patients and musculoskeletal tuberculosis. In both cases, there was presence of bilateral tenosynovitis, which is considered atypical for further infectious.
Capacidade de coleta de dois métodos de amostragem de insetos-praga da soja em diferentes espa?amentos entre linhas
Guedes, Jerson Vanderlei Carús;Farias, Juliano Ricardo;Guareschi, André;Roggia, Samuel;Lorentz, Leandro Homrich;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000400040
Abstract: sampling is a key component in the integrated pest management. in this studit was compared the colleting capacity of two sampling methods for caterpillar (anticarsia gemmatalis hueb., 1818) and stink bug (piezodorus guildinii westw., 1837). an experiment was carried out in soybean sown in three spacing (0.30, 0.40 and 0.50m). the experiment design was a completely randomized design with ten repetitions (sampling) in a 2x3 factorial. the population of velvetbean caterpillar and stink bug was evaluated in two sampling methods (beating cloth and vertical beat sheet) and three row spacing, at v8 and r6 stages, for caterpillar and stink bug, respectively. results showed greater efficiency of the vertical beat sheet compared with beating cloth in colleting caterpillar. in the smaller spacing, the vertical beating cloth did not clarify its greater capacity of colleting bugs, as observed for caterpillars. these results show that more studies are necessary to evaluate sampling methods of insects in soybean using different plant spacing.
EFFICIENCY OF INSECTICIDES IN LARVAE AND ADULTS CONTROL OF CITRUS ROOT WEEVILS EFICIêNCIA DE INSETICIDAS NO CONTROLE DE LARVAS E ADULTOS DE CURCULIONíDEOS-DAS-RAíZES EM CITROS
Jerson Vanderlei Carús Guedes,Juliano Ricardo Farias,Samuel Roggia,Felipe Sulzbach
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v37i2.1671
Abstract: The control of larvae and adults of citrus root weevils (Naupactus spp.) was evaluated in four experiments, in field and laboratory conditions, at Itapetininga, S o Paulo State, Brazil. For larvae control of Naupactus spp. the insecticides tested were: aldicarb, bifenthrin, carbofuran, carbosulfan, chlorpyrifos (GR), chlorpyrifos (EW), fipronil, imidacloprid, and thiamethoxam (GR). For adults control of Naupactus cervinus and N. versatilis the following products were tested: abamectin, carbosulfan. lufenuron, lufenuron + abamectin, and thiamethoxam (WG). The efficiency control of Naupactus spp. larvae was below 80%, for all treatments tested (insecticides, dosages, and application methods). On larvae, the best results were obtained with thiamethoxam (GR) 2.40 g, fipronil 0.19 g, and thiamethoxam (WG) 1.00 g of a.i.plant-1, with 71.43%, 74.12% and 77.87% larvae population reduction, respectively. For N. cervinus and N. versatilis adults control, thiamethoxam (WG) with 0.75 g and 1.00 g, and carbosulfan with 0.64 g of a.i. planta-1 showed efficiency above 80% in the field tests. While in the laboratory test, besides these treatments, also tiamethoxam (WG) with 0.5 g of a.i. plant-1 presented such efficiency. The adult mortality was similar between the studied species. Thiamethoxam (WG) and carbosulfan may be reccommended for adults of this insect. KEY-WORDS: Insect pest; Naupactini; chemical control. O controle de larvas e adultos de curculionídeos-das-raízes foi avaliado em quatro experimentos, em condi es de laboratório e de campo, no município de Itapetininga, SP. Para o controle de larvas de Naupactus spp. foram testados os inseticidas: aldicarbe, bifentrina, carbofurano, carbosulfano, clorpirifós (GR), clorpirifós (EW), fipronil, imidacloprido e tiametoxam (GR). Para o controle de adultos de Naupactus cervinus, e N. versatilis os tratamentos foram: abamectina, carbosulfano, lufenurom, lufenurom + abamectina e tiametoxam (WG). O controle de larvas de Naupactus spp. apresentou eficiência abaixo de 80% para os inseticidas, dosagens e formas de aplica o testadas. Sobre larvas, os melhores resultados foram obtidos com tiametoxam (GR) 2,40 g, fipronil 0,19 g e tiametoxam (WG) 1,00 g de i.a. planta-1, que apresentaram redu o da popula o de larvas em 71,43%, 74,12 e 77,87%, respec-tivamente. Para o controle de adultos de N. cervinus e N. versatilis, tiametoxam (WG) 0,75 g e 1,00 g de i.a. planta-1, e carbosulfano em 0,64 g de i.a. planta-1 apresentaram eficiência superior a 80% nos testes em campo. No teste em laboratório, além destes tratamentos, a dos
Capacidade de coleta de dois métodos de amostragem de insetos-praga da soja em diferentes espa amentos entre linhas
Guedes Jerson Vanderlei Carús,Farias Juliano Ricardo,Guareschi André,Roggia Samuel
Ciência Rural , 2006,
Abstract: A amostragem é um dos procedimentos básicos indispensáveis ao manejo integrado de pragas. Neste experimento, comparou-se a capacidade de coleta de dois métodos de amostragem da lagarta-da-soja (Anticarsia gemmatalis Hueb., 1818) e do percevejo-verde-pequeno (Piezodorus guildinii Westw., 1837) na cultura da soja semeada em três espa amentos entre linhas (0,30; 0,40 e 0,50m). Foi utilizado o delineamento inteiramente casualizado, com dez repeti es (amostragens), em esquema fatorial 2x3; utilizaram-se dois métodos de amostragem (pano-de-batida e pano-vertical) e três espa amentos entre linhas. A popula o de lagarta-da-soja e de percevejo-verde-pequeno foi avaliada nos estádios V8 e R6, respectivamente. Para lagartas, os resultados indicam maior eficiência do pano-vertical em rela o pano-de-batida. Nos menores espa amentos, o pano-vertical n o deixou clara sua maior capacidade de coleta de percevejos, como observado para lagartas. Estes resultados demonstram que s o necessárias pesquisas visando a aprofundar a avalia o dos métodos de amostragens de pragas da soja cultivada em diferentes espa amentos.
Spider mites associated to soybean in Rio Grande do Sul, Brazil
Roggia, Samuel;Guedes, Jerson Vanderlei Carús;Kuss, Rejane Cristina Roppa;Arnemann, Jonas André;Návia, Denise;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008000300002
Abstract: the objective of this work was to study the occurrence and geographic distribution of phytophagous mites associated to soybean in rio grande do sul, brazil. samplings were performed from january to may 2005 on genetically modified soybean (glyphosate-tolerant) crops, in 27 municipalities of six regions - alto vale do uruguai, campanha, depress?o central, planalto médio, miss?es and serra do sudeste. five phytophagous mite species belonging to the family tetranychidae - mononychellus planki, tetranychus desertorum, t. gigas, t. ludeni and t. urticae - occurred in 21, 12, 5, 3 and 14 municipalities, respectively. a map of rio grande do sul with the geographic distribution of each species is presented, as well as an illustrated dichotomous key to help the identification of the spider mites found.
Investigating the Distribution of Selected Major and Trace Metals in Lithogenic Environment near Cement Factory, Mekelle, Ethiopia  [PDF]
Samuel Estifanos
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.52018
Abstract:

Sixteen physicochemical parameters including four major and ten trace metals were analyzed for seven top soil and six top stream sediment samples collected around the vicinity of cement factory in Mekelle, Ethiopia. Water and aqua regia extraction techniques were deployed to determine the water soluble and near total concentration of the metals in the samples. Water extraction results verified the magnitude of loading of the metals from anthropogenic sources. The mean values of the water soluble metals are found to exceed the reference values except for Ca and Zn in both lithogenic media indicating the severity of pollution. Spatial distribution of the metals suggested that cement factory dust and traffic emissions represent the most important pollutant sources for the investigated area.  The mean proportion of the major and trace metals in the water soluble phase of soil can be put on a descending order as: Mg (57.76%) > Fe > Ca > K > Na > Mn (3.77%) and Mo (53.17%) > Cu > Co > As > Ni > Zn > Pb

Assessing the Relative Efficiency of Health Systems in Sub-Saharan Africa Using Data Envelopment Analysis  [PDF]
Samuel Ambapour
American Journal of Operations Research (AJOR) , 2015, DOI: 10.4236/ajor.2015.51003
Abstract: We assess the relative efficiency of health systems of 35 countries in sub-Saharan Africa using Data Envelopment Analysis. This method allows us to evaluate the ability of each country to transform its sanitary “inputs” into health “outputs”. Our results show that, on average, the health systems of these countries have an efficiency score between 72% and 84% of their maximum level. We also note that education and density of population are factors that affect the efficiency of the health system in these countries.
Block Unification Scheme for Elliptic, Telegraph, and Sine-Gordon Partial Differential Equations  [PDF]
Samuel Jator
American Journal of Computational Mathematics (AJCM) , 2015, DOI: 10.4236/ajcm.2015.52014
Abstract: In this paper, we use the method of lines to convert elliptic and hyperbolic partial differential equations (PDEs) into systems of boundary value problems and initial value problems in ordinary differential equations (ODEs) by replacing the appropriate derivatives with central difference methods. The resulting system of ODEs is then solved using an extended block Numerov-type method (EBNUM) via a block unification technique. The accuracy and speed advantages of the EBNUM over the finite difference method (FDM) are established numerically.
The Todaro Paradox: An Econometric Test Using Data from Congo  [PDF]
Samuel Ambapour
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.68083
Abstract: In this paper we test on data from Congo, what is come to know as Todaro Paradox. That is, on the one hand, the idea is put forward by Lewis that, industrial expansion will allow developing countries to reduce unemployment caused by an oversized rural workforce. However, on the other hand, Harris and Todaro argue that expanding urban employment will attract the rural population into the cities thus increasing unemployment. Our result seems to confirm Lewis’ theory that urban job creation leads to lower unemployment.
A Note Regarding Prioritization on Congestible Networks  [PDF]
Samuel Raisanen
Theoretical Economics Letters (TEL) , 2015, DOI: 10.4236/tel.2015.55071
Abstract: This paper examines the effect of allowing prioritization of traffic on a congestible network under three demand scenarios. First, it is shown that when prioritization does not affect usage, average congestion on the network increases. Second, this result is shown to hold when there is demand shifting toward the prioritized network service but no impact on total network traffic. Finally, it is proven that for prioritization to reduce average congestion on a network it must reduce the total traffic on the network.
Page 1 /7884
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.