Sand production is a universally encountered issue during the exploration of unconsolidated sandstone reservoirs particularly during production. The production of sand particles with the reservoir fluids depends on the stress around a wellbore and the properties of the reservoir rocks and fluids. Therefore, it is crucial to predict under what production conditions sanding will occur and when sa...

Samples of 10 and 14 Ctenocephalides felis felis fleas were collected on dogs from Pedreira and Mogi das Cruzes municipalities, respectively, in the State of São Paulo, Brazil, for detection of Rickettsia spp. Individual fleas were submitted to Polymerase Chain Reaction targeting the 17-kDa and the 190-kDa (OmpA) genes of Rickettsiae. This later gene is specific for spotted fever group. Nine fl...

Departamento de Quı́mica e Bioquı́mica, Faculdade de Ciências da UniVersidade de Lisboa, 1749-016 Lisboa, Portugal, Grupo de Fı́sica Matemática da UniVersidade de Lisboa, AV. Professor Gama Pinto 2, 1649-003 Lisboa, Portugal, UniVersidade de Mogi das Cruzes, CP 411, 08701-970 Mogi das Cruzes, São Paulo, Brazil, Instituto de Fı́sica, UniVersidade de São Paulo, CP 66318, 05315-970 São Paulo, São Paul...

A finite element program based on elastic –plastic model of Mohr-Coulomb criterion was used to evaluate the bearing capacity coefficients of soil under shallow strip flexible footing . The results were compared with others’ analytical results and it was found that the present study could offer quite consistent and rather precise values for the bearing capacity coefficients . &#10&#10The effect ...

In this work, we analyzed the karyotypes of five Hypostomus species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair. Hypostomus regani, from the Mogi-Guaçu River had 2n = 72 chromosomes with NORs in two chromosomal pairs. Hypostomus sp., from the Mogi-Guaçu River basin, had 2n = 68 chromosomes, with NO...

A finite element program based on elastic –plastic model of Mohr-Coulomb criterion was used to evaluate the bearing capacity coefficients of soil under shallow strip flexible footing . The results were compared with others’ analytical results and it was found that the present study could offer quite consistent and rather precise values for the bearing capacity coefficients . The effect of d...

Deep and even ultra-deep petroleum resources play a gradually increasing important role with the worldwide continuous advancement of oil gas exploration development. In China, deep carbonate reservoirs in Tarim Basin are regarded as key development areas due to their huge reserves. However, unreasonable design production pressure differential, some wells suffered from severe borehole collapse t...

1Department of Biosciences and Oral Diagnosis, Institute of Science and Technology, São Paulo State University (Unesp), São José dos Campos, São Paulo 12245-000, Brazil. 2University Braz Cubas, Mogi das Cruzes 08773-380, Brazil. 3Universidade Mogi das Cruzes, Mogi das Cruzes 08780-911, Brazil. 4Human Anatomy and Embriology Area, Functional Biology and Health Sciences Department, University of V...