Base de dados : LILACS
Pesquisa : G02.111.062 [Categoria DeCS]
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Id: biblio-1055407
Autor: Souza, Gabriela Rezende de; Oliveira, Luiz Fernando Coutinho de; Bello, Italoema Pinheiro; Siniscalchi, Luciene Alves Batista; Fia, Ronaldo; Gandia, Rômulo Marçal.
Título: Use of Coffee Capsules as Support Material in Upflow Anaerobic Fixed Bed Reactors
Fonte: Braz. arch. biol. technol;62:e19180504, 2019. tab, graf.
Idioma: en.
Resumo: Abstract The aim of this work is to evaluate the performance of upflow anaerobic fixed bed reactors filled with espresso coffee capsules to treat sanitary sewage. Three reactors (R1, R2 and R3) were constructed in blue PVC pipes measuring 30 cm height and 150 mm diameter and filled with coffee capsules made of aluminum and plastic. The sewage from the pre-treatment phase of the wastewater treatment plant of the Federal University of Lavras fed the system. Temperature, pH, alkalinity and volatile acids concentration, COD, TS, TVS and TSS of the influent and effluent were analyzed to evaluate the reactors performances. Statistics tests were run in the software Statistica 10. Changes occurred in the organic loading rates caused two different operating phases, one at an OLR of 2.1 kg COD m-3d-1 and another at 4.0 kg COD m-3d-1. The average temperature during the monitoring period was 18°C. In spite of the operating conditions variations, the reactors showed satisfactory performances, presenting COD efficiency removals up to 80% in both phases. The capsules characteristics were similar to other materials used as support. Hence, it is possible to utilize coffee capsules as support material in anaerobic reactors, providing satisfactory pollutants removal efficiencies.
Descritores: Esgotos Domésticos
Biomassa
-Reutilização de Equipamento
Eficiência
Anaerobiose
Imobilização
Responsável: BR1.1 - BIREME


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Id: biblio-1051225
Autor: Swiatek, Michal; Lewicki, Andrzej; Szymanowska, Daria; Kubiak, Piotr.
Título: The effect of introduction of chicken manure on the biodiversity and performance of an anaerobic digester
Fonte: Electron. j. biotechnol;37:25-33, Jan. 2019. tab, graf, ilus.
Idioma: en.
Projeto: National Centre for Research and Development (NCBR).
Resumo: Background: Ammonium stress is a prime limiting phenomenon that occurs during methane formation from poultry manure. It is caused by elevated ammonium nitrogen concentrations that result from substrate decomposition. The amounts of methane formed depend on the activity of methanogenic microbes. Results: During the research reported in this paper, the response of a mesophilic consortium inhabiting a biogas reactor to rising load of poultry manure was investigated. The taxonomic composition of bacterial population was mostly typical, however syntrophic bacteria were not detected. This absence resulted in limitation of succession of some methanogenic microorganisms, especially obligate hydrogenotrophs. The methanogenic activity of the consortium was totally dependent on the activity of Methanosaeta. Inhibition of methanoganesis was noticed at ammonium nitrogen concentration of 3.68 g/L, total cessation occurred at 5.45 g/L. Significant amounts of acetic acid in the fermentation pulp accompanied the inhibition. Conclusions: The effectiveness of the consortium was totally dependent on the metabolic activity of the acetoclastic Methanoseata genus and lack of SAOB did not allow hydrogenotrophic methanogens to propagate and lead to cessation of biogas production at an elevated ammonium concentration at which acetoclastic methanogens were inhibited.
Descritores: Methanosarcinaceae/metabolismo
Biocombustíveis
Microbiota
Anaerobiose
-Aves Domésticas
Estresse Fisiológico
Reação em Cadeia da Polimerase
Impressões Digitais de DNA
Cromatografia Líquida de Alta Pressão
Archaea/metabolismo
Biodiversidade
Fermentação
Consórcios Microbianos
Compostos de Amônio
Esterco
Metano
Nitrogênio
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1132195
Autor: Bahia, Marina; Borges, Tatiane Aparecida; Passos, Fabiana; Aquino, Sérgio Francisco de; Silva, Silvana de Queiroz.
Título: Evaluation of a Combined System Based on an Upflow Anaerobic Sludge Blanket Reactor (UASB) and Shallow Polishing Pond (SPP) for Textile Effluent Treatment
Fonte: Braz. arch. biol. technol;63:e20180130, 2020. graf.
Idioma: en.
Projeto: Minas Gerais Research Foundation.
Resumo: Abstract Color removal from textile effluents was evaluated using a laboratory-combined process based on an upflow anaerobic sludge blanket (UASB) reactor followed by a shallow polishing pond (SPP). The anaerobic reactor was fed with a real textile effluent, diluted 10-times in a 350 mg/L solution of pre-treated residual yeast extract from a brewery industry as nutrient source. The parameters color, COD, N-NH3 and toxicity were monitored throughout 45 days of operation. According to the results, decolorization and COD removal were highest in the anaerobic step, whereas the effluent was polished in the SPP unit. The overall efficiency of the complete UASB-SPP system for COD and color were 88 and 62%, respectively. Moreover, the N-NH3 generated by the residual yeast extract ammonification was below 5 mg/L for the final effluent. Finally, no toxicity was detected after the treatment steps, as shown by the Vibrio fischeri microscale assay.
Descritores: Têxteis/toxicidade
Eliminação de Resíduos Líquidos/métodos
Purificação da Água/métodos
-Leveduras
Testes de Toxicidade
Reatores Biológicos
Aliivibrio fischeri
Anaerobiose
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-910094
Autor: Mendes, Miguel.
Título: O teste de exercício cardiopulmonar pode contribuir para o treino de futebolistas? / Can cardiopulmonary exercise test contribute to train soccers players?
Fonte: Int. j. cardiovasc. sci. (Impr.);31(4):318-319, jul.-ago. 2018.
Idioma: en; pt.
Descritores: Futebol/tendências
Exercício Físico
-Consumo de Oxigênio/fisiologia
Espirometria/métodos
Esportes
Desempenho Atlético
Anaerobiose/fisiologia
Limites: Humanos
Tipo de Publ: Editorial
Responsável: BR44.1 - Serviço de Biblioteca, Documentação Científica e Didática Prof. Dr. Luiz Venere Décourt


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Id: biblio-1052269
Autor: Feng, Shoushuai; Hou, Shaoxiang; Huang, Xing; Fang, Zheng; Tong, Yanjun; Yang, Hailin.
Título: Insights into the microbial community structure of anaerobic digestion of municipal solid waste landfill leachate for methane production by adaptive thermophilic granular sludge
Fonte: Electron. j. biotechnol;39:98-106, may. 2019. tab, graf, ilus.
Idioma: en.
Projeto: National Natural Science Foundation of China; . Social Development Projects of Jiangsu Province; . Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education; . Key Laboratory of Industrial Biotechnology, Ministry of Education; . Priority Academic Program Development of; . Jiangsu Higher Education Institutions, and Program of Introducing; . Talents of Discipline to Universities.
Resumo: BACKGROUND: The amount of municipal solid waste (MSW) gradually increased along with the rapid development of modern cities. A large amount of landfill leachate are generated with excessive chemical oxygen demand (COD), which create a great deal of pressure on the environment-friendly treatment process. Anaerobic digestion is an ideal technique to solve the above problem. RESULTS: A thermophilic granular sludge was successfully adapted for anaerobic digestion of MSW leachate (from an aging large-scale landfill) for methane production. The COD degradation efficiency improved by 81.8%, while the methane production rate reached 117.3 mL CH4/(g VS d), which was 2.34-fold more than the control condition. The bacterial and archaeal communities involved in the process were revealed by 16S rRNA gene high-throughput pyrosequencing. The richness of the bacterial community decreased in the process of thermophilic granular sludge, while the archaeal community structure presented a reverse phenomenon. The bacterial genus, Methanosaeta was the most abundant during the mesophilic process, while Methanobacterium, Methanoculleus, Methanosaeta and Methanosarcina were more evenly distributed. The more balanced community distribution between hydrogenotrophic and acetotrophic methanogens implied a closer interaction between the microbes, which further contributed to higher methane productivity. The detailed relationship between the key functional communities and anaerobic digestion performances were demonstrated via the multivariate canonical correspondence analysis. Conclusions: With the assistance of adaptive thermophilic granular sludge, microbial community structure was more evenly distributed, while both of COD degradation rate and methane production was improved during anaerobic digestion of MSW landfill leachate.
Descritores: Bactérias Anaeróbias/metabolismo
Resíduos Sólidos
Digestão Anaeróbia
Tratamento de Lodos
Metano/metabolismo
-Esgotos/microbiologia
Bactérias Anaeróbias/isolamento & purificação
Poluentes Químicos da Água
Reação em Cadeia da Polimerase
Área Urbana
Biocombustíveis
Análise da Demanda Biológica de Oxigênio
Temperatura Alta
Anaerobiose
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1052032
Autor: Reyes-Contreras, Carolina; Leiva, Ana María; Vidal, Gladys.
Título: Evaluation of triclosan toxic effects on the methanogenic activity
Fonte: Electron. j. biotechnol;39:61-66, may. 2019. graf, tab.
Idioma: en.
Projeto: CONICYT (Chile).
Resumo: BACKGROUND: Triclosan (TCS) is an antimicrobial agent widely used in health care and consumer products. This compound is present in sludge of wastewater treatment plants (WWTPs), and because of its bactericidal characteristics, it can inhibit the methanogenic activity in anaerobic digestion (AD) technology. The aim of this study was to evaluate the toxic effects of TCS on the methanogenic activity. RESULTS: Batch anaerobic reactors were used with TCS concentrations of 7.8, 15.7, 23.5, and 31.4 mg/L. These assays consisted in three successive feedings (I, II, and III), wherein the sludge was exposed to each TCS concentration and volatile fatty acid (VFA) substrate. For evaluation of the residual sludge activity during feeding III, only VFA was used. The results showed that the increase in TCS concentrations correlated with the reduction in methane (CH4) production. In this case, the minimum values were achieved for TCS concentration of 31.4 mg/L with CH4 levels between 101.9 and 245.3 during feedings I, II, and III. Regarding the effect of TCS on VFA consumption, an inhibitory effect was detected for TCS concentrations of 23.5 and 31.4 mg/L, with concentrations of acetic, butyric, and propionic acids at the end of the assay (37 d) between 153.6 and 206.8, 62.5 and 60.1, and 93.4 and 110 mg/L, respectively. Regarding the removal of TCS during AD, these values were above 47%. Conclusion: TCS is an inhibitor of methanogenic activity with a decrease between 63 and 70% during the different feedings. The CH4 production was not recovered during feeding III, with inhibition percentages of 21­72%.
Descritores: Triclosan/toxicidade
Digestão Anaeróbia
Metano/metabolismo
Anti-Infecciosos/toxicidade
-Esgotos
Estações de Tratamento de Águas Residuárias
Cromatografia Líquida de Alta Pressão
Ácidos Graxos Voláteis
Anaerobiose
Responsável: CL1.1 - Biblioteca Central


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Id: lil-448120
Autor: Ferreira, Cristiane da Silva; Piedade, Maria Teresa Fernandez; Bonates, Luis Carlos.
Título: Germinação de sementes e sobrevivência de plântulas de Himatanthus sucuuba (Spruce) Wood. em resposta ao alagamento, nas várzeas da Amazônia Central / Seed germination and seedling survival of Himatanthus sucuuba(Spruce) Wood., in response to flooding in the varzeas of the Central Amazon
Fonte: Acta amaz;36(4):413-418, out.-dez. 2006. ilus, graf.
Idioma: pt.
Projeto: Projeto INPA", "_d": "Max-Planck; . CAPES.
Resumo: Himatanthus sucuuba é uma espécie que coloniza as várzeas na Amazônia Central. O objetivo desse trabalho foi estudar as estratégias de adaptação da planta ao alagamento prolongado dessas áreas. Para tanto, foram acompanhados a germinação das sementes e o desenvolvimento das plântulas, simulando as condições naturais de campo (seca e alagamento). A germinação foi realizada em dois substratos: areia+serragem (não-alagado), e em água (alagado). Durante 120 dias, as plântulas geradas foram submetidas a três tratamentos: controle (irrigação diária), submersão parcial (sistema radicular) e submersão total. Foram analisadas as alterações na morfologia das plântulas, na anatomia das raízes e a atividade da enzima álcool desidrogenase (ADH), nos tempos: 0, 15, 30, 60, 90 e 120 dias. Foi constatado que a espécie apresenta elevada taxa de germinação e produção de plântulas, ambas acima de 80 por cento, mesmo para sementes em água. Sob submersão parcial foram formadas lenticelas hipertrofiadas, raízes adventícias e aerênquima radicular. A atividade da ADH se manteve elevada até o 60° dia, com decréscimo após esse período. Plântulas sob submersão total perderam as folhas, não formaram raízes adventícias ou lenticelas, mas desenvolveram aerênquima. Estas plântulas apresentaram os maiores valores da ADH, que permaneceram altos até o término do experimento, indicando o desvio do metabolismo anaeróbico para produção de etanol como principal via para a manutenção da carga energética. Apesar de ter ocorrido a morte de algumas plântulas no tratamento de submersão total, o percentual de sobreviventes foi alto com 70 por cento ao final dos 120 dias de duração do período experimental. Desta maneira, as plântulas de H. sucuuba modulam morfo-fisiologicamente a tolerância ao alagamento em função do tempo de exposição ao estresse e altura da coluna de água.

Himatanthus sucuuba is a tree which colonizes the varzeas of Central Amazonia. The present work was carried out in order to analyze the adaptive strategies of the species to cope with the long periods of flooding common in the várzea. Seeds were accompanied from germination until the seedling stage, in experimental conditions simulating natural field conditions (terrestrial phase and flooding period). Germination was tested in two substrates: sand + sawdust (only irrigated), and in water (submergence). The seedlings produced were then subjected, for 120 days, to three treatments: control (daily irrigation), partial submersion (root system) and total submersion (whole seedling). Alterations in the morphology of seedlings and in root anatomy were examined, together with the activity of the enzyme alcohol dehydrogenase (ADH) 0, 15, 30, 60, 90, and 120 days after the start of the treatments. Irrespective of the flooding regime, germination rates and seedling formation were high, both above 80 percent. Under partial submersion, hypertrophic lenticels, adventitious roots and aerenchyma were formed in the roots while ADH activity remained high until the 60th day of flooding, declining afterwards. Seedlings under total submersion lost all leaves, did not form adventitious roots or lenticels, but developed aerenchyma. These seedlings showed the highest values of ADH, which remained high until the end of the experiment, indicating the diversion of the aerobic metabolism to the production of ethanol as the main pathway to maintain the energetic balance. Although some totally submersed seedlings died, 70 percent of them survived the 120 days of flooding. Seedlings of H. sucuuba modulate morpho-physiologically the tolerance to flooding according to the time of exposure to the stress and the height of the water column.
Descritores: Álcool Desidrogenase
Germinação
Zoneamento de Áreas de Inundação
Apocynaceae
Anaerobiose
Responsável: BR6.1 - BCS - Biblioteca de Ciências da Saúde


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Id: biblio-1040651
Autor: Poli, Rodrigo A. B; Gonzalez, Joel A. M; Fonsati, Natalia; Zagatto, Alessandro M.
Título: Differences between genders in anaerobic capacity during a supramaximal effort
Fonte: Motriz (Online);25(3):e101910, 2019. tab, ilus.
Idioma: en.
Projeto: São Paulo Research Foundation (FAPESP); . Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES).
Resumo: Aim: The present study aimed to verify if there is a difference between genders in anaerobic capacity estimated by energetic equivalents of glycolytic and phosphagen pathways (AC[La-]+EPOCfast). Methods: In this way, 8 men and 8 women (physical education students) were subjected to the following sequence of tests: session 1) graded exercise test to measure the maximal oxygen consumption (VÖ½ O2max) and intensity associated with VÖ½ O2max (iVÖ½ O2max); sessions 2 to 3) familiarization with supramaximal effort at 115% of iVÖ½ O2max; session 4) supramaximal effort at 115% of iVÖ½ O2max to measure AC[La-]+EPOCfast. Results: The AC[La-]+EPOCfast was lower in women compared to men when expressed in absolute and relative values (-38.11%; p=0.01 and -25.71%; p=0.03, respectively). A non-significant difference was observed in performance in the supramaximal effort (-12.08%; p=0.15), besides which, a likely negative inference was observed when comparing women to men. In addition, energetic equivalents of the glycolytic pathway (e[La- ]) were also lower in women when expressed in relative and absolute values (-47.01%; p=0.001 and -36.71%; p=0.001, respectively), however no statistical difference was found for energetic equivalents of the phosphagen pathway (ePCr) (p>0.05). Conclusion: The AC[La-]+EPOCfast is lower in women compared to men, mainly due to differences in the glycolytic pathway.(AU)
Descritores: Caracteres Sexuais
Esforço Físico/fisiologia
-Ácido Láctico/sangue
Glicólise/fisiologia
Anaerobiose/fisiologia
Limites: Humanos
Masculino
Feminino
Adulto
Responsável: BR33.1 - Divisão Técnica de Biblioteca e Documentação


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Id: biblio-1104417
Autor: Cardona-Gómez, Jason.
Título: Factores asociados a la potencia anaeróbica y capacidad cardiorrespiratoria en escolares de Medellín-Colombia / Associated factors with anaerobic power and cardiorespiratory fitness in schoolchildren in Medellín-Colombia / Fatores associados à potência anaeróbia e capacidade cardiorrespiratória em escolares de Medellín-Colombia
Fonte: Educ. fis. deporte;38(1):https://revistas.udea.edu.co/index.php/educacionfisicaydeporte/article/view/338652, Enero 2019.
Idioma: es.
Resumo: Objetivo: determinar factores asociados a la potencia anaeróbica y capacidad cardiorrespiratoria en escolares de 12 a 17 años de Medellín-Colombia. Método: estudio transversal con escolares, a quienes se les realizaron mediciones sociodemográficas (sexo, edad, grado de escolaridad), antropométricas (peso, talla, circunferencia de cintura y de cadera, sobrepeso, obesidad abdominal), y de condición física (potencia anaeróbica, índice de fatiga y capacidad cardiorrespiratoria). Resultados: las variables antropométricas y sociodemográficas influyen en la condición física. Padecer sobrepeso, obesidad abdominal y ser mujer, fueron factores que se asociaron con un menor desarrollo en las pruebas de potencia anaeróbica y con la capacidad cardiorrespiratoria. La mediana de generación de watts de potencia por kilogramo en una persona con obesidad abdominal fue de 4, comparado con 6,9 en alguien sin esta condición. La potencia anaeróbica se correlaciona con la capacidad cardiorrespiratoria. Conclusiones: se logró identificar que sí hay asociación entre la potencia anaeróbica y algunas variables antropométricas y sociodemográficas.

Objective: To determine associated factors with anaerobic power and cardiorespiratory fitness in schoolchildren aged 12 to 17 years old in Medellín, Colombia. Methods: Cross-sectional study with schoolchildren, who underwent to sociodemographic (sex, age, level of education), anthropometric (weight, height, waist and hip circumference, overweight, abdominal obesity), and physical condition (anaerobic power, fatigue and cardiorespiratory fitness) measurements. Results: Anthropometric and sociodemographic variables influence the physical fitness. Being overweight, abdominal obesity and being a woman were factors associated with lesser development in anaerobic power tests and cardiorespiratory fitness. Median of watts of power per kilogram in a person with abdominal obesity was 4, compared to 6.9 in someone without this condition. Anaerobic power correlates with cardiorespiratory fitness. Conclusions: It was possible to identify that there is an association between anaerobic power and some anthropometric and sociodemographic variables.

Objetivo: determinar os fatores associados à potência anaeróbia e à capacidade cardiorrespiratória em escolares de 12 a 17 anos de Medellín-Colômbia. Métodos: estudo transversal em escolares em que foram desenvolvidas medições sociodemográficas (sexo, idade, grau de escolaridade), antropométricas (peso, estatura, circunferência da cintura e quadril, sobrepeso, obesidade abdominal) e de condição física (Potência anaeróbia, taxa de fadiga e capacidade cardiorrespiratória). Resultados: as variáveis antropométricas e sociodemográficas influenciam a condição física. O sobrepeso, a obesidade abdominal e ser mulher foram fatores que se associaram com menor desenvolvimento nos testes de potência anaeróbia e com a capacidade cardiorrespiratória. A geração mediana de watts de poder por quilograma em uma pessoa com obesidade abdominal era 4, comparada com o 6,9 em alguém sem esta circunstância. O poder anaeróbio se correlaciona com a capacidade cardiorrespiratória. Conclusões: identificou-se que se existe ligação entre potência anaeróbia e algumas variáveis antropométricas e sociodemográficas.
Descritores: Instituições Acadêmicas
Esportes
-Exercício Físico
Aptidão Cardiorrespiratória
Anaerobiose
Responsável: CO197.1 - Biblioteca de Educación Física


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Id: lil-107283
Autor: Del Castillo Y., Mario; Vidarte G., Oscar; Nuñez Huerta, Edgard; Rodriguez, Manuel.
Título: Importancia de la técnica quirúrgica en apendicitis aguda / Importance of the surgical technic during apendectomy
Fonte: Cir. rev. Soc. Cir. Perú;7(1):24-8, ene.-jun. 1991. ilus.
Idioma: es.
Resumo: La apendicitis aguda representa el 55 por ciento de las emergencias quirúrgicas operadas en el hospital de Apoyo Cayetano Heredia, y el 60 por ciento de estas son intervenidos en estados complicados. En un primer período de 1970*1975 la técnica se basó en la extirpación del órgano a través de incisiones verticales, con colocación de amplios drenajes y cierre primario de la herida, las que tuvieron como resultado un 38 por ciento de abscesos residuales, un tiempo promedio de hospitalización de 19 días y una mortalidad de 15 por ciento. A partir de 1975 se propuso el cambio radical de esta técnica quirúrgica mediante incisiones transversas, apendicectomías * a muñón libre, cierre diferido de la herida operatoria por segunda a tercera intención en peritonitis, lavado exhaustivo de cavidad y aplicación de drenajes sólo en los casos de peritonitis localizada (abscesos); los resultados obtenidos muestran una reducción al 2 por ciento de abscesos residuales, un tiempo de hospitalización de 7 días y una mortalidad de 1 por ciento (p<0.001). Esta experiencia nos demuestra la efectividad de la técnica quirúrgica propuesta al haber reducido significativamente la morbi*mortalidad, que se traducen en un menor tiempo de hospitalización optimizando la cama hospitalaria y recuperando rápidamente al paciente
Descritores: Apendicite/cirurgia
Apendicite/complicações
Sistema Digestório/cirurgia
-Peru
Bactérias Gram-Negativas/efeitos dos fármacos
Anaerobiose/efeitos dos fármacos
Tipo de Publ: Relatos de Casos
Responsável: PE1.1 - Oficina Universitária de Biblioteca



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