Manuel Ortiz - Academia.edu (original) (raw)
Papers by Manuel Ortiz
Pediatric Research
Pediatric critical care patients with COVID-19 treated in Peru have higher mortality than those p... more Pediatric critical care patients with COVID-19 treated in Peru have higher mortality than those previously reported from other countries. Pediatric providers have reported a high number of patients without comorbidities presenting with hemorrhagic strokes associated with COVID-19. We present a study analyzing the factors associated with mortality in this setting. METHODS: Prospective case-control study that included patients <17 years old admitted to a pediatric critical care unit with a positive test confirming COVID-19. The primary outcome was mortality. Fisher's exact test and the Mann-Whitney U test were used for the analysis. RESULTS: Forty-seven patients were admitted to critical care. The mortality of our study is 21.3%. The mortality of patients with neurological presentation was 45.5%, which was significantly higher than the mortality of acute COVID-19 (26.7%) and MIS-C (4.8%), p 0.18. Other risk factors for mortality in our cohort were strokes and comorbidities. Only one patient presenting with hemorrhagic stroke had an undiagnosed comorbidity. CONCLUSION: Cerebrovascular events associated with COVID-19 in pediatric patients, including infants, must be recognized as one of the more severe presentations of this infection in pediatric patients.
El Libro Espanol Revista Mensual Del Instituto Nacional Del Libro Espanol, 1974
El Libro Espanol Revista Mensual Del Instituto Nacional Del Libro Espanol, 1973
2015 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE), 2015
This paper proposes a methodology based on Inertial Measurement Units (IMU's) and sensor ... more This paper proposes a methodology based on Inertial Measurement Units (IMU's) and sensor fusion for the trajectory tracking performed by a human expert, estimating orientation in two dimensions and position in three dimensions. In addition, involving modeling of robot manipulators and the acquired trajectory, a kinematic control is generated for the robot programming. Experimental results have shown that this method is capable of acquire the trajectory performed by a human without the use of expensive Computational Video Systems (SVC's).
The genus Aristias is recorded for the first time from Caribbean sea. A new species, A. bicornuta... more The genus Aristias is recorded for the first time from Caribbean sea. A new species, A. bicornuta, associated to the sponge Lefroyella is described and illustrated from Cuba.
A new species of copepod belonging to the genus Asterocheres Boeck, 1860 is described. It was col... more A new species of copepod belonging to the genus Asterocheres Boeck, 1860 is described. It was collected in association with the sponge Ptilocaulis walpersi. (Duchassaing y Michelotti, 1864). Most important differences among the new Asterocheres and the close related congeneric species are also given.
Se describe una especie nueva de isópodo flabelífero del género Cirolana, de la familia Ciro-lani... more Se describe una especie nueva de isópodo flabelífero del género Cirolana, de la familia Ciro-lanidae. El material objeto de este estudio fue encontrado cuando se tamizó el alcohol en que per-manecía incluida una esponja hexactinélida colectada durante las Expediciones conjuntas de las universidades de Harvard y de La Habana, a bordo del B/I "Atlantis", en 1939. Dicha esponja fue depositada en la Facultad de Biología y después en el Centro de Investigaciones Marinas, ambos de la Universidad de la Habana. Las diferencias más notables de esta nueva especie con las dos más afi-nes citadas para el área también son ofrecidas. A new Flabelliferan isopod crustacean species of the genus Cirolana, of the family Cirolanidae, is herein described. The material was found when the original alcohol into which a hexactine-llid sponge was preserved, was seived from its original bottle. The sponge was collected during the Joint Havana Harvard Universities Expedition, on board of the R/V &quo...
Elektronika ir Elektrotechnika, 2015
In this work, a low power datalogger with a wireless connection is described. The datalogger can ... more In this work, a low power datalogger with a wireless connection is described. The datalogger can be used as a portable and stand-alone device, as well as a wireless sensor network node. A flexible architecture, which combines a microcontroller with external local buses (data and address) and a complex programmable logic device (CPLD), has been used. The system has two special characteristics: one of them is the high resolution of A/D converters; the second is based on the incorporation of a non-volatile random-access memory (NVRAM) that allows fast access to stored data and a low consumption. Storing data in an NVRAM implies an extra security level for the maintenance of data even when the batteries of the system have been exhausted. The complete glue logic has been integrated into a Zero-Power CPLD in order to reduce size. In addition, in each specific application, the CPLD allows the implementation through hardware of some interfaces to sensor module, saving computation time.
The Anatomical Record, 1949
Page 1. ON THE GROWTH OF THE HUMAN HEAD FROM BIRTH TO THE THIRD MONTH OF LIFE YANUEL HIGINIO ORTI... more Page 1. ON THE GROWTH OF THE HUMAN HEAD FROM BIRTH TO THE THIRD MONTH OF LIFE YANUEL HIGINIO ORTIZ AND ALLAN GIBSON BRODIE Department of Orthodontia, College of Dentistry and Department of ...
American Journal of Hypertension, 1996
2010 International Conference on Reconfigurable Computing and FPGAs, 2010
ABSTRACT This paper presents an educational platform for digital system practices with a conventi... more ABSTRACT This paper presents an educational platform for digital system practices with a conventional PCI bus interface, based on reconfigurable hardware especially useful for the designing of hardware accelerators and systems with a PCI bus interface. The aim of the platform is to provide students with a single tool to develop rapid prototypes that covers all aspects involved in the study of digital systems. The platform consists of hardware and software components that allow to easily develop prototypes of general electronic systems, simple systems with a conventional PCI bus interface, hardware accelerators, and buses. The platform is focused on reconfigurable computing practices for university degrees in Electronics Industrial Engineering and Computer Engineering of the new framework of European Higher Education Area (EHEA).
Terapia psicológica, 2011
Resumen Se han reportado bajas tasas de adherencia al tratamiento de enfermedades crónicas (50%).... more Resumen Se han reportado bajas tasas de adherencia al tratamiento de enfermedades crónicas (50%). Asimismo, los factores psicosociales estarían relacionados con la adherencia al tratamiento. Con el propósito de identifi car la relación que existe entre factores psicosociales y la adherencia al tratamiento de la DM2 en usuarios del sistema de salud pública chileno, se diseñó un estudio no experimental transversal correlacional (n = 50, edad promedio 60,76 años). Se autoadministraron encuestas para evaluar estrés y estilo de afrontamiento, sintomatología depresiva, percepción de apoyo social y adherencia al tratamiento. 40% de los pacientes presenta valores de hemoglobina glicosilada (Hb1Ac) mayores a 9%, mientras que un 66% de los participantes presenta desde moderados a altos niveles de estrés. En promedio durante los últimos 7 días los participantes han cumplido con la dieta general en 4,37 días, han consumido frutas y verduras en 3,14 días y han realizado exámenes de glicemia en 1,1 días. Existe una correlación directa entre el estrés y la hemoglobina glicosilada. El apoyo social y la sintomatología depresiva no se asociaron con la adherencia al tratamiento pero sí con el estrés. Se confi rman pobres cifras de adherencia, y la asociación entre alto estrés y altos índices de Hb1Ac.
Materials Transactions, JIM, 1999
Munibe, 2003
RESUMEN La desaparición de medios acuáticos temporales afecta directamente a los anfibios a travé... more RESUMEN La desaparición de medios acuáticos temporales afecta directamente a los anfibios a través del aislamiento y extinción de poblaciones. Aprovechando la creación o restauración de 16 charcas en los Arribes del Duero de Zamora, se estudió la ...
Pediatric Research
Pediatric critical care patients with COVID-19 treated in Peru have higher mortality than those p... more Pediatric critical care patients with COVID-19 treated in Peru have higher mortality than those previously reported from other countries. Pediatric providers have reported a high number of patients without comorbidities presenting with hemorrhagic strokes associated with COVID-19. We present a study analyzing the factors associated with mortality in this setting. METHODS: Prospective case-control study that included patients <17 years old admitted to a pediatric critical care unit with a positive test confirming COVID-19. The primary outcome was mortality. Fisher's exact test and the Mann-Whitney U test were used for the analysis. RESULTS: Forty-seven patients were admitted to critical care. The mortality of our study is 21.3%. The mortality of patients with neurological presentation was 45.5%, which was significantly higher than the mortality of acute COVID-19 (26.7%) and MIS-C (4.8%), p 0.18. Other risk factors for mortality in our cohort were strokes and comorbidities. Only one patient presenting with hemorrhagic stroke had an undiagnosed comorbidity. CONCLUSION: Cerebrovascular events associated with COVID-19 in pediatric patients, including infants, must be recognized as one of the more severe presentations of this infection in pediatric patients.
El Libro Espanol Revista Mensual Del Instituto Nacional Del Libro Espanol, 1974
El Libro Espanol Revista Mensual Del Instituto Nacional Del Libro Espanol, 1973
2015 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE), 2015
This paper proposes a methodology based on Inertial Measurement Units (IMU's) and sensor ... more This paper proposes a methodology based on Inertial Measurement Units (IMU's) and sensor fusion for the trajectory tracking performed by a human expert, estimating orientation in two dimensions and position in three dimensions. In addition, involving modeling of robot manipulators and the acquired trajectory, a kinematic control is generated for the robot programming. Experimental results have shown that this method is capable of acquire the trajectory performed by a human without the use of expensive Computational Video Systems (SVC's).
The genus Aristias is recorded for the first time from Caribbean sea. A new species, A. bicornuta... more The genus Aristias is recorded for the first time from Caribbean sea. A new species, A. bicornuta, associated to the sponge Lefroyella is described and illustrated from Cuba.
A new species of copepod belonging to the genus Asterocheres Boeck, 1860 is described. It was col... more A new species of copepod belonging to the genus Asterocheres Boeck, 1860 is described. It was collected in association with the sponge Ptilocaulis walpersi. (Duchassaing y Michelotti, 1864). Most important differences among the new Asterocheres and the close related congeneric species are also given.
Se describe una especie nueva de isópodo flabelífero del género Cirolana, de la familia Ciro-lani... more Se describe una especie nueva de isópodo flabelífero del género Cirolana, de la familia Ciro-lanidae. El material objeto de este estudio fue encontrado cuando se tamizó el alcohol en que per-manecía incluida una esponja hexactinélida colectada durante las Expediciones conjuntas de las universidades de Harvard y de La Habana, a bordo del B/I "Atlantis", en 1939. Dicha esponja fue depositada en la Facultad de Biología y después en el Centro de Investigaciones Marinas, ambos de la Universidad de la Habana. Las diferencias más notables de esta nueva especie con las dos más afi-nes citadas para el área también son ofrecidas. A new Flabelliferan isopod crustacean species of the genus Cirolana, of the family Cirolanidae, is herein described. The material was found when the original alcohol into which a hexactine-llid sponge was preserved, was seived from its original bottle. The sponge was collected during the Joint Havana Harvard Universities Expedition, on board of the R/V &quo...
Elektronika ir Elektrotechnika, 2015
In this work, a low power datalogger with a wireless connection is described. The datalogger can ... more In this work, a low power datalogger with a wireless connection is described. The datalogger can be used as a portable and stand-alone device, as well as a wireless sensor network node. A flexible architecture, which combines a microcontroller with external local buses (data and address) and a complex programmable logic device (CPLD), has been used. The system has two special characteristics: one of them is the high resolution of A/D converters; the second is based on the incorporation of a non-volatile random-access memory (NVRAM) that allows fast access to stored data and a low consumption. Storing data in an NVRAM implies an extra security level for the maintenance of data even when the batteries of the system have been exhausted. The complete glue logic has been integrated into a Zero-Power CPLD in order to reduce size. In addition, in each specific application, the CPLD allows the implementation through hardware of some interfaces to sensor module, saving computation time.
The Anatomical Record, 1949
Page 1. ON THE GROWTH OF THE HUMAN HEAD FROM BIRTH TO THE THIRD MONTH OF LIFE YANUEL HIGINIO ORTI... more Page 1. ON THE GROWTH OF THE HUMAN HEAD FROM BIRTH TO THE THIRD MONTH OF LIFE YANUEL HIGINIO ORTIZ AND ALLAN GIBSON BRODIE Department of Orthodontia, College of Dentistry and Department of ...
American Journal of Hypertension, 1996
2010 International Conference on Reconfigurable Computing and FPGAs, 2010
ABSTRACT This paper presents an educational platform for digital system practices with a conventi... more ABSTRACT This paper presents an educational platform for digital system practices with a conventional PCI bus interface, based on reconfigurable hardware especially useful for the designing of hardware accelerators and systems with a PCI bus interface. The aim of the platform is to provide students with a single tool to develop rapid prototypes that covers all aspects involved in the study of digital systems. The platform consists of hardware and software components that allow to easily develop prototypes of general electronic systems, simple systems with a conventional PCI bus interface, hardware accelerators, and buses. The platform is focused on reconfigurable computing practices for university degrees in Electronics Industrial Engineering and Computer Engineering of the new framework of European Higher Education Area (EHEA).
Terapia psicológica, 2011
Resumen Se han reportado bajas tasas de adherencia al tratamiento de enfermedades crónicas (50%).... more Resumen Se han reportado bajas tasas de adherencia al tratamiento de enfermedades crónicas (50%). Asimismo, los factores psicosociales estarían relacionados con la adherencia al tratamiento. Con el propósito de identifi car la relación que existe entre factores psicosociales y la adherencia al tratamiento de la DM2 en usuarios del sistema de salud pública chileno, se diseñó un estudio no experimental transversal correlacional (n = 50, edad promedio 60,76 años). Se autoadministraron encuestas para evaluar estrés y estilo de afrontamiento, sintomatología depresiva, percepción de apoyo social y adherencia al tratamiento. 40% de los pacientes presenta valores de hemoglobina glicosilada (Hb1Ac) mayores a 9%, mientras que un 66% de los participantes presenta desde moderados a altos niveles de estrés. En promedio durante los últimos 7 días los participantes han cumplido con la dieta general en 4,37 días, han consumido frutas y verduras en 3,14 días y han realizado exámenes de glicemia en 1,1 días. Existe una correlación directa entre el estrés y la hemoglobina glicosilada. El apoyo social y la sintomatología depresiva no se asociaron con la adherencia al tratamiento pero sí con el estrés. Se confi rman pobres cifras de adherencia, y la asociación entre alto estrés y altos índices de Hb1Ac.
Materials Transactions, JIM, 1999
Munibe, 2003
RESUMEN La desaparición de medios acuáticos temporales afecta directamente a los anfibios a travé... more RESUMEN La desaparición de medios acuáticos temporales afecta directamente a los anfibios a través del aislamiento y extinción de poblaciones. Aprovechando la creación o restauración de 16 charcas en los Arribes del Duero de Zamora, se estudió la ...