Produção Nacional
Revisado por pares
Williane de Oliveira Silva Soares, Rogério Santana Peruchi, Rômulo Augusto Ventura Silva, Paulo Rotella,
... Management, Statistical Process Control, Multiobjective Modeling and Optimization.Rômulo Augusto Ventura SilvaRômulo Augusto Ventura Silva, Graduated in Materials ...
Tópico(s): Hemodynamic Monitoring and Therapy
2022 - Taylor & Francis | Quality Engineering
Produção Nacional
Revisado por pares
George Rafael Martins de Lima, Rômulo Augusto da Silveira, João Batista Gadelha de Cerqueira, Augusto César Gadelha de Abreu, Augusto César Gadelha de Abreu Filho, Marcos Flávio Holanda Rocha, Rommel Prata Regadas, Lúcio Flávio Gonzaga-Silva,
Abstract Purpose We report the first use of single-incision multiport access to perform 1-stage laparoscopic orchidopexy in children without section of the spermatic vessels. Material and methods Three boys with cryptorchidism were submitted to primary laparoscopic 1-stage orchidopexy by using 3 ports (a 10-mm [or 5-mm] port placed using open technique and 2 additional 5-mm [or 3-mm] ports) inserted through the same periumbilical skin incision with different entrances through the abdominal wall. After dissection ...
Tópico(s): Gastrointestinal Tumor Research and Treatment
2009 - Elsevier BV | Journal of Pediatric Surgery
Produção Nacional
Revisado por pares
Flávia Pegado Junqueira, Rômulo Augusto de Paiva Macêdo, Antônio Carlos Coutinho, Ricardo Loureiro, Paulo V. Pontes, R. C. Domingues, Emerson L. Gasparetto,
In this study, we evaluated patients with pulmonary arterial hypertension (PAH) and impaired right ventricular function. We used cardiac MRI for the detection of myocardial delayed enhancement (MDE) and its possible association with other clinical variables. 20 patients (6 males and 14 females, aged 44.5+/-11 years; 15 New York Heart Association class III, 5 class IV) with known PAH (13 idiopathic, 7 resulting from chronic pulmonary embolism) were evaluated for the detection of MDE. Short-axis cine ...
Tópico(s): Cardiac Imaging and Diagnostics
2009 - Wiley | British Journal of Radiology
Produção Nacional
Revisado por pares
Raquel Carvalho Montenegro, Rômulo Augusto Feio Farias, Márcio Roberto Pereira, Ana Paula Negreiros Nunes Alves, Franciglauber Silva Bezerra, Manoel Andrade‐Neto, Cláudia Pessoa, Manoel Odorico de Moraes, Letícia V. Costa‐Lotufo,
It has been reported that pisosterol was active against cancer cells but lacked activity on the development of sea urchin eggs. Recently, it was reported that pisosterol induces differentiation in leukemia cell line. The present study evaluated the in vivo antitumor activity of pisosterol a triterpene isolated from Pisolithus tinctorius. Histopathological and morphological analyses of the tumor and the organs, including liver, spleen and kidney, were performed in order to evaluate toxicological ...
Tópico(s): Protein Hydrolysis and Bioactive Peptides
2008 - Pharmaceutical Society of Japan | Biological and Pharmaceutical Bulletin
Produção Nacional
Revisado por pares
Rômulo Augusto de Abreu Franchini,
Hydrogen peroxide (H2O2) present in honey was rapidly determined by the differential amperometric method in association with flow-injection analysis (FIA) and a tubular reactor containing immobilized enzymes. A gold electrode modified by electrochemical deposition of platinum was employed as working electrode. Hydrogen peroxide was quantified in 14 samples of Brazilian commercial honeys using amperometric differential measurements at +0.60V vs. Ag/AgCl((sat)). For the enzymatic consumption of H2O2, ...
Tópico(s): Meat and Animal Product Quality
2007 - Elsevier BV | Talanta
Produção Nacional
Revisado por pares
Rômulo Augusto de Abreu Franchini, Cabrini Ferraz de Souza, Rosana Colombara, Maria Auxiliadora Costa Matos, Renato Camargo Matos,
Hydrogen peroxide and trace metals (K+, Ca2+, Na+, Mg2+, Mn2+, and Li+) were determined in 14 samples of Brazilian commercial honeys. The method for the determination of H2O2 is based on selective oxidation of H2O2 using an on-line tubular reactor containing peroxidase immobilized on Amberlite IRA-743 resin. Reactors presented high stability for at least 2 weeks under intense use. The results show a simple, accurate, selective, and readily applied method to the determination of H2O2 in honey. The ...
Tópico(s): Meat and Animal Product Quality
2007 - American Chemical Society | Journal of Agricultural and Food Chemistry
Produção Nacional
Revisado por pares
T.G. Soares Neto, João Andrade de Carvalho, Ely Vieira Cortez, Rafael Gomes de Azevedo, Rômulo Augusto Jucá Oliveira, W.R.R. Fidalgo, Jorge Costa Santos,
Biomass samples representing Amazon forest native species were burned in laboratory experiments. These species were obtained in the deforestation arc, near the town of Alta Floresta, state of Mato Grosso, Brazil. Moisture content values obtained for twigs and pieces of sticks and leaves of the same species ranged from 9 to 11%, in terms of mass of moisture per total mass. Gas concentrations were measured for carbon dioxide, carbon monoxide, nitrogen oxides, and unburned hydrocarbons. Temperatures, ...
Tópico(s): Atmospheric chemistry and aerosols
2011 - Elsevier BV | Atmospheric Environment
Produção Nacional
Revisado por pares
Sidney C. Abreu, Mardhen B. Araújo, Rômulo Augusto da Silveira, Rommel Prata Regadas, Danilo G. Pinheiro, Frederico I. Messias, Renato S. Argollo, Glauco A. Guedes, João Batista C. Gadelha, Gilvan N. Fonseca,
Tópico(s): Urological Disorders and Treatments
2006 - Elsevier BV | Urology
Produção Nacional
Revisado por pares
Rafael Vasconcelos Ribeiro, Eduardo Caruso Machado, Erick Espinoza-Núñez, Rômulo Augusto Ramos, Daniela Fávero São Pedro Machado,
Citrus plants were grown under two thermal conditions for evaluating carbon metabolism acclimation to moderate warm temperature (30/20ºC, day/night), and its likely impact on plant growth. As reference, plants were grown at 25/20ºC, in which they were subjected to optimum temperature for photosynthesis during the diurnal period (25ºC). Higher photosynthetic rates were found at 30/20ºC as compared to 25/20ºC in both mature and young leaves, being this response associated with higher stomatal conductance. ...
Tópico(s): Plant Stress Responses and Tolerance
2012 - SciELO | Brazilian Journal of Plant Physiology
Produção Nacional
Revisado por pares
Adilson Pereira Domingues Júnior, Milton Massao Shimizu, Jullyana Cristina Magalhães Silva Moura, Rodrigo Ramos Catharino, Rômulo Augusto Ramos, Rafael Vasconcelos Ribeiro, Paulo Mazzafera,
The aim of this study was to determine which anthocyanins are related to the purple coloration of young leaves in Coffea arabica var. Purpurascens and assess their impact on photosynthesis as compared to C. arabica var. Catuaí, with green leaves. Two delphinidin glicosides were identified and histological cross-sections showed they were located throughout the adaxial epidermis in young leaves, disappearing as the leaves mature. Regardless the irradiance level, the photosynthetic performance of Purpurascens ...
Tópico(s): Tea Polyphenols and Effects
2012 - Wiley | Photochemistry and Photobiology
Produção Nacional
Revisado por pares
Rômulo Augusto Guedes Rizzardo, Marcelo O. Milfont, Eva Mônica Sarmento da Silva, Breno Magalhães Freitas,
Castor bean (Ricinus communis L.) is cultivated mainly for biodiesel production because of its oil-rich seeds; it is assumed to be an anemophylous species. But pollination deficit can lead to low productivity often attributed to other reasons. In this paper, we investigated pollination requirements, pollination mechanism, occurrence of pollination deficit, and the role of biotic pollinators in a large commercial plantation of castor bean. Our results show that R. communis bears a mixed breeding system ...
Tópico(s): Plant Parasitism and Resistance
2012 - Brazilian Academy of Sciences | Anais da Academia Brasileira de Ciências
Produção Nacional
Revisado por pares
Ademir F. Silva, Maria S. Aguiar, Odemir S. Carvalho, Luana de Nazaré S. Santana, Edna Cristina Santos Franco, Rafael Rodrigues Lima, Natalino Valente M. de Siqueira, Romulo Augusto Feio, L.R.F. Faro, Walace Gomes‐Leal,
Aluminum (Al) is a neurotoxic agent with deleterious actions on cognitive processes. Nevertheless, few studies have investigated the neuropathological effects underling the Al-induced cognitive impairment. We have explored the effects of acute Al citrate intoxication on both hippocampal morphology and mnemonic processes in rodents. Adult male Wistar rats were intoxicated with a daily dose of Al citrate (320 mg/kg) during 4 days by gavage. Animals were perfused at 8 (G2), 17 (G3) and 31 days (G4) after ...
Tópico(s): Medicinal Plants and Neuroprotection
2012 - Elsevier BV | Brain Research
Produção Nacional
Revisado por pares
Rômulo Augusto Feio Farias, Macêdo Neto, G.S.B. Viana, V. S. N. Rao,
The antihyperlipidaemic property of a hydroalcoholic extract obtained from the leaves of Croton cajucara Benth. (Euphorbiaceae) was studied in rats fed a high fat diet. Ten weeks following daily oral administration of plant extract (200 mg/kg), significant reductions in the serum total cholesterol (Tc), and low-density lipoprotein cholesterol (LDL-c) levels were observed without much change in serum high-density lipoprotein cholesterol (HDL-c) and triglycerides. The data also showed a significant elevation ...
Tópico(s): Hibiscus Plant Research Studies
1996 - Wiley | Phytotherapy Research
Produção Nacional
Revisado por pares
Maria Aparecida M. Maciel, Ângelo C. Pinto, Alberto C. Arruda, Sônia G.S.R Pamplona, Frederico Argollo Vanderlinde, A.J. Lapa, Aurea Echevarrı́a, Noema F. Grynberg, I.M.S. Cólus, Rômulo Augusto Feio Farias, Angelica M Luna Costa, V. S. N. Rao,
Tópico(s): Insect Pest Control Strategies
2000 - Elsevier BV | Journal of Ethnopharmacology
Produção Nacional
Revisado por pares
Éverton Freitas de Morais, Jadson Alexandre da Silva Lira, Rômulo Augusto de Paiva Macêdo, Klaus Steyllon dos Santos, Cassandra Teixeira Valle Elias, Maria de Lourdes Silva de Arruda Morais,
Acute lymphocytic leukemia is a type of cancer most common in children and it is characterized by excessive and disordered immature leukocytes in the bone marrow. Identify most frequent oral manifestations in children with acute lymphocytic leukemia under chemotherapy treatment. The research was conducted on the eletronic database PubMed/Medline, Science Direct, Scielo and Scopus. It has been sought papers with full presentation, wrote in Portuguese, English and Spanish, published between January ...
Tópico(s): Cancer Diagnosis and Treatment
2014 - Elsevier BV | Brazilian Journal of Otorhinolaryngology
Produção Nacional
Revisado por pares
Afonso Nóbrega Dantas, Éverton Freitas de Morais, Rômulo Augusto de Paiva Macêdo, João Maria de Lima Tinôco, Maria de Lourdes Silva de Arruda Morais,
Adenoid cystic carcinoma is the most frequent malignant tumor of the submandibular gland and the minor salivary glands. It is a malignant neoplasm that, despite its slow growth, shows an unfavorable prognosis.The aim of this study was to perform a systematic review of the literature on Adenoid cystic carcinoma in the head and neck region and its clinicopathological characteristics, with emphasis on the perineural invasion capacity of the tumor.A systematic search of articles published between January ...
Tópico(s): Oral and Maxillofacial Pathology
2015 - Elsevier BV | Brazilian Journal of Otorhinolaryngology
Produção Nacional
Revisado por pares
Rômulo Augusto Jucá Oliveira, Viviana Maggioni, Daniel Vila, Carlos A. Morales,
Studies that investigate and evaluate the quality, limitations and uncertainties of satellite rainfall estimates are fundamental to assure the correct and successful use of these products in applications, such as climate studies, hydrological modeling and natural hazard monitoring. Over regions of the globe that lack in situ observations, such studies are only possible through intensive field measurement campaigns, which provide a range of high quality ground measurements, e.g., CHUVA (Cloud processes ...
Tópico(s): Atmospheric aerosols and clouds
2016 - Multidisciplinary Digital Publishing Institute | Remote Sensing
Produção Nacional
Revisado por pares
Marcelo de Paula Loureiro, Rômulo Augusto Andrade de Almeida, Christiano Marlo Paggi Claus, Eduardo A. Bonin, Antônio Moris Cury-Filho, Daniellson Dimbarre, Marco Aurélio Raeder da Costa, Marcílio Lisboa VITAL,
Background : Gastrointestinal mesenchymal or stromal tumors (GIST) are lesions originated on digestive tract walls, which are treated by surgical resection. Several laparoscopic techniques, from gastrectomies to segmental resections, have been used successfully. Aim : Describe a single center experience on laparoscopic GIST resection. Method : Charts of 15 operated patients were retrospectively reviewed. Thirteen had gastric lesions, of which ten were sub epithelial, ranging from 2-8 cm; and three were ...
Tópico(s): Gastric Cancer Management and Outcomes
2016 - Colégio Brasileiro de Cirurgia Digestiva | ABCD Arquivos Brasileiros de Cirurgia Digestiva (São Paulo)
Produção Nacional
Revisado por pares
Rômulo Augusto Cotta Dângelo, D. S. J., Thaís Demarchi Mendes, Joel da Cruz Couceiro, Terezinha Maria Castro Della Lúcia,
Actinomycetes bacteria associated with leafcutter ants produce secondary metabolites with antimicrobial properties against Escovopsis, a fungus specialized in attacking the gardens of fungus-growing ants, which denies the ants their food source. Because previous studies have used fungi isolated from fungus gardens but not from ant integument, the aims of the present study were to isolate actinomycetes associated with the cuticle of the Acromyrmex spp. and to quantify their inhibition abilities against ...
Tópico(s): Neurobiology and Insect Physiology Research
2016 - Wiley | Journal of Basic Microbiology
Produção Nacional
Revisado por pares
Rômulo Augusto Jucá Oliveira, Viviana Maggioni, Daniel Vila, Leonardo Porcacchia,
This study aims to assess the characteristics and uncertainty of Integrated Multisatellite Retrievals for Global Precipitation Measurement (GPM) (IMERG) Level 3 rainfall estimates and to improve those estimates using an error model over the central Amazon region. The S-band Amazon Protection National System (SIPAM) radar is used as reference and the Precipitation Uncertainties for Satellite Hydrology (PUSH) framework is adopted to characterize uncertainties associated with the satellite precipitation ...
Tópico(s): Climate variability and models
2018 - Multidisciplinary Digital Publishing Institute | Remote Sensing
Produção Nacional
Revisado por pares
Moisés Hamoy, Luiz dos Santos Batista, Vanessa Jóia de Mello, Walace Gomes‐Leal, Rômulo Augusto Feio Farias, Pedro Batista, José Luíz Martins do Nascimento, Helcio Casemiro Marcondes, Jason G. Taylor, William D. Hutchison, Marcelo Ferreira Torres, Luís André Luz Barbas,
This study aimed at describing the characteristics and properties of seizures induced by cunaniol, a polyacetylenic alcohol isolated from the Clibadium genus, which is ubiquitous in the Amazon biodiversity and its potential use as a convulsant model. Wistar rat behavior was assessed upon cunaniol administration and animals were evaluated for neural activity through electroencephalographic records whereby epidural electrodes were positioned over the motor cortex under cunaniol-elicited seizures and ...
Tópico(s): Biochemical Analysis and Sensing Techniques
2018 - Elsevier BV | Toxicology and Applied Pharmacology
Rémy Roca, Lisa V. Alexander, Gerald L. Potter, Margot Bador, Rômulo Augusto Jucá Oliveira, Steefan Contractor, Michael G. Bosilovich, Sophie Cloché,
Abstract. We introduce the Frequent Rainfall Observations on GridS (FROGS) database (Roca et al., 2019). It is composed of gridded daily-precipitation products on a common 1∘×1∘ grid to ease intercomparison and assessment exercises. The database includes satellite, ground-based and reanalysis products. As most of the satellite products rely on rain gauges for calibration, unadjusted versions of satellite products are also provided where available. Each product is provided over its length of record ...
Tópico(s): Climate variability and models
2019 - Copernicus Publications | Earth system science data
Produção Nacional
Revisado por pares
Thalita Lin Netto Cândido, Laís Emilia da Silva, Juliana F. Tavares, Ana Carolina Müller Conti, Rômulo Augusto Guedes Rizzardo, Rita de Cássia Gonçalves Alfenas,
In this systematic review, we critically evaluated human clinical trials that assessed the effects of dietary fat quality on metabolic endotoxaemia. The studies were selected from three databases (PubMed, Scopus and Cochrane Library), and the keywords were defined according to the Medical Subject Headings indexing terminology. Two authors searched independently, according to the pre-defined selection criteria. Quality and risk assessment of bias for each selected study were also evaluated. The results ...
Tópico(s): Gut microbiota and health
2020 - Cambridge University Press | British Journal Of Nutrition
Vanessa dos Santos, Rômulo Augusto Jucá Oliveira, Pankyes Datok, Sabine Sauvage, Adrien Paris, Marielle Gosset, J.M. Sánchez-Pérez,
Congo River Basin Precipitation is the major driving force of hydrological processes and is one of the main input datasets for hydrological models. The Congo River Basin is one of the least studied major river basins in the world and suffers from the scarcity and difficulty in accessing rain gauge data, necessitating the use of satellite precipitation estimates for hydrological studies. In this study, we have made a comprehensive comparison of different satellite-based precipitation products' inputs ...
Tópico(s): Meteorological Phenomena and Simulations
2022 - Elsevier BV | Journal of Hydrology Regional Studies
Odin Marc, Rômulo Augusto Jucá Oliveira, Marielle Gosset, Robert Emberson, Jean‐Philippe Malet,
Abstract Rainfall-induced landsliding is a global and systemic hazard that is likely to increase with the projections of increased frequency of extreme precipitation with current climate change. However, our ability to understand and mitigate landslide risk is strongly limited by the availability of relevant rainfall measurements in many landslide prone areas. In the last decade, global satellite multisensor precipitation products (SMPP) have been proposed as a solution, but very few studies have ...
Tópico(s): Flood Risk Assessment and Management
2022 - American Meteorological Society | Earth Interactions
Produção Nacional
Revisado por pares
Rafael Vasconcelos Ribeiro, Leandro da Silva, Rômulo Augusto Ramos, Cristiano Alberto de Andrade, Fernando César Bachiega Zambrosi, Sérgio Parreiras Pereira,
O benefício do silício (Si) no crescimento de plantas cultivadas tem sido observado em vários trabalhos. O objetivo deste estudo foi avaliar os efeitos de Si no crescimento de mudas de cafeeiro cv. Catuaí Vermelho. O experimento foi conduzido em vasos, e as plantas crescidas em casa de vegetação, sem restrição hídrica. A partição de matéria seca entre raízes, caule e folhas, os teores de nutrientes e Si nos tecidos vegetais e no solo e as trocas gasosas foliares foram avaliados em plantas submetidas ...
Tópico(s): Geochemistry and Elemental Analysis
2011 - Sociedade Brasileira de Ciência do Solo | Revista Brasileira de Ciência do Solo
Produção Nacional
Revisado por pares
Éverton Freitas de Morais, Rômulo Augusto de Paiva Macêdo, Jadson Alexandre da Silva Lira, Kênio Costa de Lima, Boniek Castillo Dutra Borges,
This study aimed to perform a systematic review of studies on factors related to xerostomia and/or hyposalivation in elderly patients with diabetes. SciELO, Science Direct, Scopus, and PubMed/Medline databases were searched for articles published from January 1992 to January 2013, concerned with factors associated with/related to xerostomia or hyposalivation in elderly patients with diabetes. Five articles were selected, including four transversal studies and one longitudinal study. Some of the ...
Tópico(s): Oral microbiology and periodontitis research
2014 - UNIVERSIDADE FEDERAL DO RIO DE JANEIRO | Revista Brasileira de Geriatria e Gerontologia
Produção Nacional
Revisado por pares
Raquel Carvalho Montenegro, Paula C. Jimenez, Rômulo Augusto Feio Farias, Manoel Andrade‐Neto, Franciglauber Silva Bezerra, Maria Elisabete Amaral de Moraes, Manoel Odorico de Moraes, Cláudia Pessoa, Letícia V. Costa‐Lotufo,
Abstract Pisolithus tinctorius (Basidiomycete) is an ectomicorrhizal fungus found in the roots and soil surrounding of many species of eucalyptus and pine trees. The present work verified the cytotoxic potential of pisosterol, a triterpene isolated from P. tinctorius collected in the Northeast region of Brazil, on three different animal cell models: mouse erythrocytes, sea urchin embryos and tumor cells. Pisosterol lacked activity on mouse erythrocytes as well as on the development of sea urchin ...
Tópico(s): Enzyme-mediated dye degradation
2004 - De Gruyter | Zeitschrift für Naturforschung C
Christopher Alvarez‐Breckenridge, Rômulo Augusto Andrade de Almeida, Ali S. Haider, Matthew Muir, Justin E. Bird, Robert Y. North, Laurence D. Rhines, Claudio E. Tatsui,
Carbon-fiber reinforced polyetheretherketone (CFRP)-based spinal implants are an alternative to titanium, offering less image artifact as their metallic counterparts while maintaining similar biomechanical and biocompatibility properties. Its use in the management of spinal tumors has been reported, however the perceived advantages related to improved imaging quality, radiation treatment planning, and detection of tumor recurrence have not been fully assessed.We performed a retrospective review of ...
Tópico(s): Spinal Fractures and Fixation Techniques
2023 - Korean Spinal Neurosurgery Society | Neurospine
Produção Nacional
Revisado por pares
José Rodrigues Magalhães Filho, Eduardo Caruso Machado, Daniela Fávero São Pedro Machado, Rômulo Augusto Ramos, Rafael Vasconcelos Ribeiro,
O objetivo deste trabalho foi avaliar a influência da temperatura do substrato nas trocas gasosas, atividade fotoquímica e relações hídricas, em plantas jovens de laranjeira 'Valência' enxertadas sobre limoeiro 'Cravo'. Foram utilizadas mudas com seis meses de idade. O experimento foi conduzido em câmara de crescimento, em que o substrato foi mantido a 10, 20 (controle) ou 30oC, e a temperatura do ar variou de 25 a 20oC entre o dia e a noite, com fotoperíodo de 12 horas e densidade de fluxo de fótons ...
Tópico(s): Growth and nutrition in plants
2009 - Embrapa Informação Tecnológica | Pesquisa Agropecuária Brasileira