Produção Nacional
Revisado por pares
Ruy Brayner de Oliveira Filho, Karla Campos Malta, Júnior Mário Baltazar de Oliveira, Vania Lucia Assis Santana, Mabel Hanna Vance Harrop, Danilo Tancler Stipp, José Wilton Pinheiro,
Leptospirosis is a zoonotic disease that occurs in humans and several animal species, including cattle, pigs, and horses, and it has a worldwide distribution. In equids, leptospirosis manifests through recurrent uveitis and abortion and other reproductive disorders. The objective of the present study was to investigate the epidemiological situation of Leptospira spp. infection in equids from the Brejo Paraibano microregion in the northeast of Brazil, that is, to assess the prevalence of and identify ...
Tópico(s): Viral Infections and Vectors
2013 - Elsevier BV | Journal of Equine Veterinary Science
Daniela Brito Melo, J. Baltazar, J. A. C. Falcão de Campos,
A method to analyze the flow around horizontal axis wind turbines based on the lifting line theory is presented. A non-linear vortex wake alignment scheme is proposed. The wake is discretized in straight line vortices. The velocity induced by the vortex system is computed in multiple sections downstream of the rotor plane. The effect of the radial velocity component is neglected and, therefore, the orientation of each straight line vortex is only given by the axial and tangential velocity components. ...
Tópico(s): Wind and Air Flow Studies
2018 - Elsevier BV | Journal of Wind Engineering and Industrial Aerodynamics
J. Baltazar, J. A. C. Falcão de Campos, Johan Bosschers,
This paper discusses several modelling aspects that are important for the performance predictions of a ducted propulsor with a low-order Panel Method. The aspects discussed are the alignment of the wake geometry, the influence of the duct boundary layer on the wake pitch, and the influence of a transpiration velocity through the gap. The analysis is carried out for propeller Ka4-70 operating without and inside a modified duct 19A, in which the rounded trailing edge is replaced by a sharp trailing ...
Tópico(s): Vibration and Dynamic Analysis
2012 - Hindawi Publishing Corporation | International Journal of Rotating Machinery
J. Baltazar, J. A. C. Falcão de Campos,
A low order potential based panel code is used to analyze the flow around the blades of a horizontal axis marine current turbine. An empirical vortex model is assumed for the turbine wake, which includes the variation of pitch of the helicoidal vortices trailing behind the blades. The analysis is carried out for uniform inflow conditions in steady flow for a turbine with controllable pitch for two different pitch settings in a wide range of tip-speed-ratios. Grid convergence studies carried out ...
Tópico(s): Aerospace Engineering and Energy Systems
2011 - ASM International | Journal of Offshore Mechanics and Arctic Engineering
Produção Nacional
Revisado por pares
Júnior Mário Baltazar de Oliveira, Jonatas Campos de Almeida, Renata Pimentel Bandeira de Melo, Luiz Daniel de Barros, João Luís Garcia, Müller Ribeiro-Andrade, Wagnner José Nascimento Porto, Javier Regidor‐Cerrillo, Luís Miguel Ortega-Mora, Andréa Alice da Fonseca Oliveira, Rinaldo Aparecido Mota,
The purpose of this study was to perform genotypic characterization and to evaluate the virulence of Toxoplasma gondii obtained from aborted fetuses in an abortion outbreak in goats from northeastern Brazil. Brain samples from 32 fetuses were submitted to mouse bioassay for T. gondii isolation. Two isolates were obtained and subjected to genotypic characterization. Isolate virulence was evaluated using murine model in different doses (from 105 to 101 tachyzoites/mL). In genotyping, both isolates ...
Tópico(s): Sex work and related issues
2018 - Elsevier BV | Experimental Parasitology
Susana O. Ribeiro, Carlos M. Granadeiro, Pedro L. Almeida, João Pires, M. Carmen Capel‐Sánchez, José M. Campos‐Martín, Sandra Gago, Baltazar de Castro, Salete S. Balula,
Strategic polyoxometalate Keggin-type structural modification was performed to increase the oxidative catalytic performance to desulfurize model and real diesels. The most active lacunar structure [PW11O39]7− (PW11) showed to complete desulfurize a simulated diesel after 60 min at 70 °C. Its application as homogeneous catalyst using a biphasic system 1:1 diesel/acetonitrile needed to use an excess of oxidant (ratio H2O2/S = 8). The immobilization of the PW11 on amine-functionalized SBA-15 supports originated ...
Tópico(s): Metal-Organic Frameworks: Synthesis and Applications
2018 - Elsevier BV | Catalysis Today
J. Baltazar, Douwe Rijpkema, J. A. C. Falcão de Campos, Johan Bosschers,
In the present work, a comparison between the results obtained by a panel code with a Reynolds-averaged Navier-Stokes (RANS) code is made to obtain a better insight on the viscous effects of the ducted propeller and on the limitations of the inviscid flow model, especially near bollard pull conditions or low advance ratios, which are important in the design stage. The analysis is carried out for propeller Ka4-70 operating inside duct 19A. From the comparison, several modelling aspects are studied ...
Tópico(s): Advanced Aircraft Design and Technologies
2018 - Multidisciplinary Digital Publishing Institute | Journal of Marine Science and Engineering
J. Baltazar, Douwe Rijpkema, J. A. C. Falcão de Campos,
The goal of the present work is to improve the prediction of propeller performance at model-scale using a local correlation transition model. Results are presented for two marine propellers for which paint-tests have been conducted and experimental open-water data is available. The numerical results using the k−ω SST turbulence model and the γ−R˜eθt transition model are compared with the experiments. In order to distinguish between numerical and modeling errors in the comparison with experimental ...
Tópico(s): Advanced Combustion Engine Technologies
2018 - Elsevier BV | Ocean Engineering
Susana O. Ribeiro, Carlos M. Granadeiro, Marta C. Corvo, João Pires, José M. Campos‐Martín, Baltazar de Castro, Salete S. Balula,
The monolacunary Keggin-type [PW11O39]7- (PW11) heteropolyanion was immobilized onto the porous framework of mesoporous silicas, namely SBA-15 and an ethylene-bridged periodic mesoporous organosilica (PMOE). The supports were previously functionalized with a cationic functional group (N-trimethoxysilypropyl-N,N,N-trimethylammonium, TMA) for the successful anchoring of the anionic polyoxometalate. The PW11@TMA-SBA-15 and PW11@TMA-PMOE composites were evaluated as heterogeneous catalysts in the oxidative ...
Tópico(s): Mesoporous Materials and Catalysis
2019 - Frontiers Media | Frontiers in Chemistry
Luis A. Garcia, Samantha E. Day, Richard L. Coletta, Baltazar Campos, Tonya R. Benjamin, Eleanna De Filippis, James A. Madura, Lawrence J. Mandarino, Lori R. Roust, Dawn K. Coletta,
The mechanisms of weight loss and metabolic improvements following bariatric surgery in skeletal muscle are not well known; however, epigenetic modifications are likely to contribute. The aim of our study was to investigate skeletal muscle DNA methylation after weight loss induced by Roux-en-Y gastric bypass (RYGB) surgery. Muscle biopsies were obtained basally from seven insulin-resistant obese (BMI > 40 kg/m2) female subjects (45.1 ± 3.6 years) pre- and 3-month post-surgery with euglycemic hyperinsulinemic ...
Tópico(s): Epigenetics and DNA Methylation
2021 - BioMed Central | Clinical Epigenetics
Produção Nacional
Revisado por pares
Jair Baltazar-Rodrigues, J.C. de Lima, Carlos Eduardo Maduro de Campos, T.A. Grandi,
Zinc-blende ZnSe powder, with particles containing nanometric grains, was prepared using the mechanical alloying technique, from an equiatomic mixture of elemental Zn and Se powders. An important interfacial component was observed in the as-milled powder, which affects its thermal and optical properties. In order to obtain a high-quality zinc-blende ZnSe powder an annealing process was applied. The structural properties of both as-milled and annealed powders were characterized by an x-ray diffraction ...
Tópico(s): Quantum Dots Synthesis And Properties
2008 - IOP Publishing | Journal of Physics Condensed Matter
Produção Nacional
Revisado por pares
Jair Baltazar-Rodrigues, J.C. de Lima, Carlos Eduardo Maduro de Campos, T.A. Grandi,
A ZnSe alloy was prepared by mechanical alloying and annealing at 520 °C for 6 h. Samples were analyzed using X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The as-milled alloy had a dark brown color, which turned to the yellow color characteristic of commercial ZnSe products after annealing. After 10 h of milling the alloy exhibited a zincblende structure. The DSC spectrum showed a broad exothermic band related to structural relaxation and an incomplete endothermic peak associated ...
Tópico(s): nanoparticles nucleation surface interactions
2008 - Elsevier BV | Powder Technology
Susana O. Ribeiro, Carlos M. Granadeiro, Pedro L. Almeida, João Pires, Rita Valença, José M. Campos‐Martín, Jorge C. Ribeiro, Baltazar de Castro, Salete S. Balula,
The Keggin phosphotungstate (PW12) and its zinc derivative (PW11Zn) were tested as oxidative catalysts for desulfurization processes using simulated and real diesels. These compounds were used as homogeneous catalysts, while the corresponding SBA-15 composites were used as heterogeneous catalysts. The comparison of their catalytic performance demonstrated that the zinc-substituted polyoxometalate is more efficient than the plenary PW12 structure. Additionally, using the heterogeneous PW11Zn@aptesSBA- ...
Tópico(s): Chemical Synthesis and Reactions
2019 - American Chemical Society | Industrial & Engineering Chemistry Research
Produção Nacional
Revisado por pares
Ruy Brayner Oliveira Filho, Karla Campos Malta, Júnior Mário Baltazar de Oliveira, Pedro Paulo Feitosa de Albuquerque, Rinaldo Aparecido Mota, Vania Lucia Assis Santana, Lêucio Câmara Alves, José Wilton Pinheiro,
Objetivou-se com o estudo caracterizar a situação epidemiológica da infecção por Toxoplasma gondii em equídeos na microrregião do Brejo Paraibano, região Nordeste do Brasil. Anticorpos contra T. gondii foram pesquisados em 257 amostras de equídeos (204 equinos, 46 muares e sete asininos) em 26 propriedades. Para o diagnóstico sorológico utilizou-se a Reação de Imunofluorescência Indireta (RIFI) e um ponto de corte de 1:64. O número de focos encontrado foi de 46,1%. Nas amostras analisadas, a prevalência ...
Tópico(s): Rabies epidemiology and control
2012 - Colégio Brasileiro de Patologia Animal (CBPA) | Pesquisa Veterinária Brasileira
J. Baltazar, J. A. C. Falcão de Campos,
Tópico(s): Electromagnetic Launch and Propulsion Technology
2010 - Elsevier BV | Journal of Hydrodynamics
Luis Garcı́a, Rocio Zapata Bustos, Samantha E. Day, Baltazar Campos, Yassin Hamzaoui, Linda Wu, Alma D. Leon, Judith Krentzel, Richard L. Coletta, Eleanna De Filippis, Lori R. Roust, Lawrence J. Mandarino, Dawn K. Coletta,
Skeletal muscle is highly plastic and dynamically regulated by the body's physical demands. This study aimed to determine the plasticity of skeletal muscle DNA methylation in response to 8 weeks of supervised exercise training in volunteers with a range of insulin sensitivities. We studied 13 sedentary participants and performed euglycemic hyperinsulinemic clamps with basal vastus lateralis muscle biopsies and peak aerobic activity (VO2 peak) tests before and after training. We extracted DNA from ...
Tópico(s): Epigenetics and DNA Methylation
2022 - Multidisciplinary Digital Publishing Institute | Metabolites
Produção Nacional
Revisado por pares
Jéssica Amanda Marques Souza, Ludmila de Matos Baltazar, Virgínia Mendes Carregal, Ludmila Gouveia‐Eufrásio, A. G. de Oliveira, Wendell Dias, Marina Campos Rocha, Kildare Miranda, Iran Malavazi, Daniel Assis Santos, Frédéric Frézard, Danielle G. Souza, Mauro M. Teixeira, Frederico Marianetti Soriani,
Extracellular vesicles (EVs) has been considered an alternative process for intercellular communication. EVs release by filamentous fungi and the role of vesicular secretion during fungus-host cells interaction remain unknown. Here, we identified the secretion of EVs from the pathogenic filamentous fungus, Aspergillus fumigatus. Analysis of the structure of EVs demonstrated that A. fumigatus produces round shaped bilayer structures ranging from 100 to 200 nm size, containing ergosterol and a myriad ...
Tópico(s): Fungal Infections and Studies
2019 - Frontiers Media | Frontiers in Microbiology
Produção Nacional
Revisado por pares
Paulo César Gonçalves de Azevedo Filho, Júnior Mário Baltazar de Oliveira, Müller Ribeiro-Andrade, José Givanildo da Silva, Pomy C.P. Kim, Jonatas Campos de Almeida, Wagnner José Nascimento Porto, Rinaldo Aparecido Mota,
The infection by Neospora caninum in sheep can lead to abortion and the birth of weak and debilitated lambs. The aim of this study was to assess the incidence of natural infection by Neospora caninum and the vertical transmission rate among sheep. A flock of 50 sheep was monitored for serum antibody titres against N. caninum and seroconversion over a period of six months using an indirect ELISA technique. The offspring of the herd was also investigated regarding anti-N. caninum antibodies to determine ...
Tópico(s): Animal Disease Management and Epidemiology
2017 - Elsevier BV | Comparative Immunology Microbiology and Infectious Diseases
Abraham Pedroza‐Torres, Alma D. Campos-Parra, Oliver Millán-Catalán, Yahir A. Loissell-Baltazar, Horacio Zamudio‐Meza, David Cantï¿ ⁄ de Leï¿ ⁄ n, Gonzalo Montalvo‐Esquivel, David Isla‐Ortiz, Luis A. Herrera, ï¿ ⁄ scar ï¿ ⁄ ngeles‐Zaragoza, Guadalupe Robelo‐Romero, ï¿ ⁄ ngel Herrera‐Gï¿ ⁄ mez, Carlos Pérez‐Plasencia,
Cervical cancer (CC) is one of the most common cancers diagnosed in women worldwide, and it is estimated that ~500,000 new patients are diagnosed with cervical cancer annually and that ~270,000 deaths occur each year. Patients with cervical cancer are treated with different radiotherapy schedules, either alone or with adjuvant chemotherapy. Unfortunately, nearly 50% of all patients with cervical cancer do not respond to standard treatment due to tumor radioresistance. In this scenario, several microRNAs ( ...
Tópico(s): Cancer-related molecular mechanisms research
2018 - Elsevier BV | Oncology Reports
J. Baltazar, Douwe Rijpkema, J. A. C. Falcão de Campos,
In this study, a Reynolds averaged Navier-Stokes solver is used for prediction of the propeller performance in open-water conditions at different Reynolds numbers ranging from 104 to 107. The k−ω SST turbulence model and the γ−R˜eθt correlation-based transition model are utilised and results compared for a conventional marine propeller. First, the selection of the turbulence inlet quantities for different flow regimes is discussed. Then, an analysis of the iterative and discretisation errors is ...
Tópico(s): Advanced Aircraft Design and Technologies
2021 - Multidisciplinary Digital Publishing Institute | Journal of Marine Science and Engineering
Rita Ferreira, Cristina Freire, Baltazar de Castro, Ana P. Carvalho, João Pires, M. Brotas de Carvalho,
... for more papers by this authorBaltazar de Castro, Baltazar de Castro CEQUP − Departamento de Química, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, PortugalSearch for more papers by this authorAna P. Carvalho, Ana P. Carvalho Departamento de Química e Bioquímica and CCMM, Faculdade de Ciências de Lisboa, Ed. C8, Campo Grande, 1749-016 Lisboa, PortugalSearch for more papers ... for more papers by this authorBaltazar de Castro, Baltazar de Castro CEQUP − Departamento de Química, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, PortugalSearch for more papers by this authorAna P. Carvalho, Ana P. Carvalho Departamento de Química e Bioquímica and CCMM, Faculdade de Ciências de Lisboa, Ed. C8, Campo Grande, 1749-016 Lisboa, PortugalSearch for more papers ...
Tópico(s): Covalent Organic Framework Applications
2002 - Wiley | European Journal of Inorganic Chemistry
Produção Nacional
Revisado por pares
Juarez Pereira Furtado, Augustin de Tugny, Ana Paula Baltazar, Silke Kapp, Cláudia Maria Generoso, Florianita Coelho Braga Campos, Andréa Máris Campos Guerra, Eunice Nakamura,
Apresentamos pesquisa avaliativa qualitativa sobre modos de morar de pessoas com transtorno mental grave, vinculadas às redes municipais de saúde mental de três cidades de grande porte. Realizamos observação participante de dez moradores e respectivos cuidadores de Serviços Residenciais Terapêuticos (SRT) e acompanhamos o cotidiano de oito usuários de Centros de Atenção Psicossocial (CAPS) que constituíram suas moradias por iniciativas próprias. Os moradores e usuários também foram entrevistados em ...
Tópico(s): Youth, Drugs, and Violence
2013 - ASSOCIAÇÃO BRASILEIRA DE SAÚDE COLETIVA | Ciência & Saúde Coletiva
Baltazar Solano-Rodríguez, Amalia Pizarro-Alonso, Kathleen Vaillancourt, Cecilia Martı́n-del-Campo,
Mexico has positioned itself as a leader among emerging countries for its efforts to mitigate climate change through ambitious climate policies aimed at reducing greenhouse gas (GHG) emissions. However, the Energy Reform bill approved in 2014 promotes the production of hydrocarbons to develop the economy of this sector, as well as the use of natural gas for electricity generation in order to reduce electricity prices in the short term. In 2016, nearly 80% of Mexico's total electricity was generated ...
Tópico(s): Climate Change Policy and Economics
2018 - Springer International Publishing | Lecture notes in energy
Javier A. Arcibar‐Orozco, Bertha S. Barajas-Elías, Hazael Baltazar-Campos, J. René Rangel-Méndez,
Abstract Chromium-Tanned Leather Shavings are hazardous residues generated during leather processing. Since they contain considerable amounts of chromium, they represent a threat to life and the environment if managed improperly. The present study examines the transformation of such residues into carbon adsorbents and their use in the removal of azo dyes (methylene blue, Congo red and acid black 210) from water. The effects of temperature, holding time and the presence of an activating agent were ...
Tópico(s): Chromium effects and bioremediation
2022 - Springer Nature | Applied Water Science
K.-U. Lee, Dun Jin, Sang-wook Lee,
... 패널법 (surface panel method) 을 적용하였다[2-4].Baltazar and Falcao de Campos[2]는 표면 패널법을 이용하여 간극(gap) 모델에 ...
Tópico(s): Fluid Dynamics Simulations and Interactions
2015 - | Journal of computational fluids engineering
... y diligencia de un obispo del siglo XVIII, Baltazar Jaime Martínez Compañón y Bujanda, obispo de Trujillo entre 1779 y 1788, que fue muy conocido por su obra social y humanística (Macera, 1997), pero casi desconocido en el campo de las Ciencias Naturales. Sin embargo, fue él ...
Tópico(s): Bird parasitology and diseases
2007 - National University of San Marcos | Revista Peruana de Biología
Alejandro González-Aquines, Denisse Martínez-Roque, Alan Baltazar Treviño-Herrera, Beatriz Chávez‐Luévanos, F Guerrero-Campos, Fernando Góngora‐Rivera,
To describe the main physiopathological mechanisms of obstructive sleep apnea syndrome (OSAS) associated with the development of stroke.Sleep breathing disorders have a high prevalence in the healthy population, among them, the OSAS is the most recognized. This syndrome has been associated with vascular diseases such as stroke, hypertension, atrial fibrillation, among others. Stroke has a high global prevalence and is considered a catastrophic disease. The physiopathological mechanisms are of great ...
Tópico(s): Cardiovascular and Diving-Related Complications
2019 - Viguera Publishers | Revista de Neurología
Baltazar Aguirre‐Hernández, Carlos Arturo Loredo-Villalobos, Edgar Cristian Díaz-González, Erick Campos-Cantón,
Para analizar la estabilidad de un sistema de ecuaciones diferenciales lineales ẋ = Ax podemos estudiar la localización de las raíces del polinomio característico pA(t) asociado a la matriz A. En este artículo presentamos diversos criterios —algebraicos y geométricos— que nos ayudan a determinar el lugar donde se encuentran las raíces sin necesidad de calcularlas en forma directa.
Tópico(s): History and Theory of Mathematics
2017 - University of Costa Rica | Revista de Matemática Teoría y Aplicaciones
Produção Nacional
Revisado por pares
Jéssica Amanda Marques Souza, Ludmila de Matos Baltazar, Virgínia Mendes Carregal, Ludmila Gouveia‐Eufrásio, A. G. de Oliveira, Wendell Dias, Marina Campos Rocha, Kildare Miranda, Iran Malavazi, Daniel Assis Santos, Frédéric Frézard, Danielle G. Souza, Mauro M. Teixeira, Frederico Marianetti Soriani,
[This corrects the article DOI: 10.3389/fmicb.2019.02008.].
Tópico(s): Extracellular vesicles in disease
2019 - Frontiers Media | Frontiers in Microbiology
Urinda Álamo-Hernández, Horacio Riojas‐Rodríguez, Mary Carmen Baltazar-Reyes, Michel O’Neill,
En México, al igual que en otras regiones del mundo, se presentan desafíos complejos en salud ambiental que requieren de nuevos enfoques integradores, participativos e interdisciplinarios. El propósito de este artículo es mostrar las ventajas que puede aportar el campo de la promoción de la salud al de la salud ambiental para afrontar estos desafíos. Se abordan de manera general y particularmente para el caso de México las principales características de los dos campos. Además se discuten algunas ...
Tópico(s): Community Health and Development
2014 - SAGE Publishing | Global Health Promotion