Results 71 to 80 of about 7,630 (187)

Estudo numérico e experimental de ligações aparafusadas autoperfurantes de chapas finas a temperaturas elevadas [PDF]

, 2016
Este trabalho apresenta um estudo do comportamento das ligações autoperfurantes de chapas finas sujeitas ao corte à temperatura ambiente e a temperaturas elevadas.
Dias, Rui Paulo Silva, Mesquita, L.M.R., Parente, Armandino   +2 more
core   +1 more source

Steady and transient regimes in hydropower plants

IOP Conference Series: Materials Science and Engineering, 2013
Hydropower plant that has been in operation for about 30 years has to be reconstructed. They have already installed 12 Kaplan turbines, the largest in the world at that time. The existing CAM relationship was determined based on hydraulic model tests and checked by efficiency on-site tests. It was also tested based on turbine bearing vibrations.
openaire   +1 more source

Periodicity in the transient regime of exhaustive polling systems

The Annals of Applied Probability, 2006
We consider an exhaustive polling system with three nodes in its transient regime under a switching rule of generalized greedy type. We show that, for the system with Poisson arrivals and service times with finite second moment, the sequence of nodes visited by the server is eventually periodic almost surely. To do this, we construct a dynamical system,
MacPhee, I. M., Menshikov, M. V., Popov, S., Volkov, S.   +3 more
openaire   +4 more sources

Pêras Secadas, Promoção de um Produto Agro-Alimentar Tradicional Utilizando Metodologia Científica. [PDF]

, 2009
O Projecto intitulado “Pêras secadas, promoção de um produto agro-alimentar tradicional utilizando metodologia científica” é financiado pela Fundação para a Ciência e Tecnologia, tendo-se iniciado em Maio de 2007 e prolongando-se até Maio de 2010.
BACK-BRITO, Graziela Nueremberg, JORGE, Antonio Olavo Cardoso, KOGA-ITO, Cristiane Yumi, MOTA, Adolfo Jose, QUERIDO, Silvia Maria Rodrigues, RIBEIRO, Patricia Monteiro   +5 more
core   +1 more source

PRESSURE AND PRESSURE DERIVATIVE TRANSIENT ANALYSIS WITHOUT TYPE-CURVE MATCHING FOR ELONGATED RESERVOIRS WITH CHANGES IN FACIES OR WIDTH

CT&F Ciencia, Tecnología & Futuro, 2010
Due to geologic and tectonic events many reservoirs have an elongated geometry in which dual-linear and single-linear flow regimes may be developed.
Freddy-Humberto Escobar, Matilde Montealegre, Daniel Carrillo-Moreno   +2 more
doaj  

SBC Guideline on the Diagnosis and Treatment of Patients with Cardiomyopathy of Chagas Disease - 2023. [PDF]

Arq Bras Cardiol, 2023
Marin-Neto JA, Rassi A, Oliveira GMM, Correia LCL, Ramos Júnior AN, Luquetti AO, Hasslocher-Moreno AM, Sousa AS, Paola AAV, Sousa ACS, Ribeiro ALP, Correia Filho D, Souza DDSM, Cunha-Neto E, Ramires FJA, Bacal F, Nunes MDCP, Martinelli Filho M, Scanavacca MI, Saraiva RM, Oliveira Júnior WA, Lorga-Filho AM, Guimarães AJBA, Braga ALL, Oliveira AS, Sarabanda AVL, Pinto AYDN, Carmo AALD, Schmidt A, Costa ARD, Ianni BM, Markman Filho B, Rochitte CE, Macêdo CT, Mady C, Chevillard C, Virgens CMBD, Castro CN, Britto CFPC, Pisani C, Rassi DDC, Sobral Filho DC, Almeida DR, Bocchi EA, Mesquita ET, Mendes FSNS, Gondim FTP, Silva GMSD, Peixoto GL, Lima GG, Veloso HH, Moreira HT, Lopes HB, Pinto IMF, Ferreira JMBB, Nunes JPS, Barreto-Filho JAS, Saraiva JFK, Lannes-Vieira J, Oliveira JLM, Armaganijan LV, Martins LC, Sangenis LHC, Barbosa MPT, Almeida-Santos MA, Simões MV, Yasuda MAS, Moreira MDCV, Higuchi ML, Monteiro MRCC, Mediano MFF, Lima MM, Oliveira MT, Romano MMD, Araujo NNSL, Medeiros PTJ, Alves RV, Teixeira RA, Pedrosa RC, Aras Junior R, Torres RM, Povoa RMDS, Rassi SG, Alves SMM, Tavares SBDN, Palmeira SL, Silva Júnior TLD, Rodrigues TDR, Madrini Junior V, Brant VMDC, Dutra WO, Dias JCP.   +91 more
europepmc   +1 more source

Determinação do coeficiente global de transferência de calor de um condensador do tipo casco e tubo de um chiller por adsorção de amônia em NaBr [PDF]

, 2014
O trocador de calor mais frequentemente usado em processos industriais é o tipo casco e tubos. Estes trocadores são amplamente utilizados no aquecimento, resfriamento, evaporação e condensação de fluidos.
Rubbo, Patrick Nikson
core  

DETERMINATION OF VERTICAL AND HORIZONTAL PERMEABILITIES FOR VERTICAL OIL AND GAS WELLS WITH PARTIAL COMPLETION AND PARTIAL PENETRATION USING PRESSURE AND PRESSURE DERIVATIVE PLOTS WITHOUT TYPE-CURVE MATCHING DETERMINACIÓN DE PERMEABILIDADES VERTICAL Y HORIZONTAL EN POZOS VERTICALES DE GAS Y PETRÓLEO, CON COMPLETAMIENTO Y PENETRACIÓN PARCIAL A PARTIR DE PLOTEOS DE PRESIÓN Y PRESIÓN DERIVADA, SIN AJUSTE TIPO CURVA

CT&F Ciencia, Tecnología & Futuro, 2005
it has been long recognized that in some reservoirs the flow does not follow the expected radial cylindrical pattern. Spherical flow may take place in systems with wells completed in thick reservoirs where a short completion interval is open to flow ...
Katherine Moncada, Djebbar Tiab, Freddy-Humberto Escobar, Matilde Montealegre, Abel Chacon, Renzon Zamora, Sandra-L. Nese   +6 more
doaj  

Manejo de irrigação em fruteiras tropicais. [PDF]

, 2013
As incertezas quanto a contribuição das chuvas para garantir umidade adequada no solo, tem levado a grande maioria dos fruticultores a adotarem a irrigação como tecnologia indispensável ao sistema produtivo das fruteiras.
AGUIAR NETTO, A. de O., COELHO, E. F., OLIVEIRA, A. S. de, SOUSA, V. F. de   +3 more
core   +1 more source

PRESSURE AND PRESSURE DERIVATIVE ANALYSIS FOR VERTICAL GAS AND OIL WELLS IN STRESS SENSITIVE HOMOGENEOUS AND NATURALLY FRACTURED FORMATIONS WITHOUT TYPE-CURVE MATCHING Analisis de la presión y derivada de presión para pozos verticales de gas y petróleo en formaciones homogéneas y naturalmente fracturadas sensibles a los esfuerzos

CT&F Ciencia, Tecnología & Futuro, 2007
Currently, rock mechanics plays an important role in the oil industry. Effects of reservoir subsidence, compaction and dilation are being taken into account in modern reservoir management of complex systems.
Freddy-Humberto Escobar, José-Humberto Cantillo, Matilde Montealegre-M   +2 more
doaj