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Minería y Geología, 1983
Las intercalaciones de material amenífero dentro del horizonte menífero de los yacimientos ferron... more Las intercalaciones de material amenífero dentro del horizonte menífero de los yacimientos ferroniquelíferos son la causa principal de la dilución interna, la cual ocasiona una baja eficiencia industrial. Por lo difícil que resulta pronosticar estas intercalaciones en puntos sin datos dentro de las redes de muestreo, el propósito de esta investigación fue estimar la distribución probabilística espacial de estas. Para ello se empleó el modelo markoviano de yacimientos a fin de crear índices de complejidad que cuantifiquen la frecuencia de aparición y la dispersión de las intercalaciones. Estos índices permiten establecer los sectores con mayor probabilidad de ocurrencia de la dilución interna, lo que es de gran utilidad en la planificación minera. Palabras clave: intercalaciones ameníferas; dilución interna; selectividad minera; indicadores de la complejidad; modelación markoviana.
Revista Cubana de …, 2012
Introduction: The toxoplasmosis is a zoonosis involving a third of world population. It is associ... more Introduction: The toxoplasmosis is a zoonosis involving a third of world population. It is associated with congenital infections and abortion. Objective: To describe a clinical case of a patient presenting with toxoplasmosis associated with pregnancy. Methods: Patient aged 36 who at 21 weeks of pregnancy is assessed by the Provincial Genetics Department of La Habana by determination of IgM for positive toxoplasmosis. IgG and IgM determinations were performed and polymerase chain reaction (PCR) in amniotic fluid for Toxoplasm, which was positive. The couple received genetic advice and started a specific treatment. At 32 weeks is admitted in our service diagnosed with preterm delivery threat. A cesarean section of corporeal segment was carried out as well as surgical sterilization with a diagnosis of acute fetal suffering. Results: The conception was a male newborn weighing 1 800 g, a 9/9 Apgar scale. The newborn receive treatment with sulfadiazine, pirimetamine and folinic acid. Later, IgE and IgM determinations were made being negatives. She is discharged at 42 days weighing 2 520 g, a favorable evolution and ophthalmic assessment. Serologic follow-up of newborn was prescribed. Conclusions: Transmission rate in the seroconversion increases by week of gestational age, thus it is necessary to start an early therapy to avoid the complications and to carry out the long-term follow-up of these newborns to assess the disease prognosis.
Minería y Geología, 1983
Las intercalaciones de material amenífero dentro del horizonte menífero de los yacimientos ferron... more Las intercalaciones de material amenífero dentro del horizonte menífero de los yacimientos ferroniquelíferos son la causa principal de la dilución interna, la cual ocasiona una baja eficiencia industrial. Por lo difícil que resulta pronosticar estas intercalaciones en puntos sin datos dentro de las redes de muestreo, el propósito de esta investigación fue estimar la distribución probabilística espacial de estas. Para ello se empleó el modelo markoviano de yacimientos a fin de crear índices de complejidad que cuantifiquen la frecuencia de aparición y la dispersión de las intercalaciones. Estos índices permiten establecer los sectores con mayor probabilidad de ocurrencia de la dilución interna, lo que es de gran utilidad en la planificación minera. Palabras clave: intercalaciones ameníferas; dilución interna; selectividad minera; indicadores de la complejidad; modelación markoviana.
Revista Cubana de …, 2012
Introduction: The toxoplasmosis is a zoonosis involving a third of world population. It is associ... more Introduction: The toxoplasmosis is a zoonosis involving a third of world population. It is associated with congenital infections and abortion. Objective: To describe a clinical case of a patient presenting with toxoplasmosis associated with pregnancy. Methods: Patient aged 36 who at 21 weeks of pregnancy is assessed by the Provincial Genetics Department of La Habana by determination of IgM for positive toxoplasmosis. IgG and IgM determinations were performed and polymerase chain reaction (PCR) in amniotic fluid for Toxoplasm, which was positive. The couple received genetic advice and started a specific treatment. At 32 weeks is admitted in our service diagnosed with preterm delivery threat. A cesarean section of corporeal segment was carried out as well as surgical sterilization with a diagnosis of acute fetal suffering. Results: The conception was a male newborn weighing 1 800 g, a 9/9 Apgar scale. The newborn receive treatment with sulfadiazine, pirimetamine and folinic acid. Later, IgE and IgM determinations were made being negatives. She is discharged at 42 days weighing 2 520 g, a favorable evolution and ophthalmic assessment. Serologic follow-up of newborn was prescribed. Conclusions: Transmission rate in the seroconversion increases by week of gestational age, thus it is necessary to start an early therapy to avoid the complications and to carry out the long-term follow-up of these newborns to assess the disease prognosis.