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Search Results: 1 - 10 of 80 matches for " Ricart "
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Quimioprevención del Cáncer de Mama: Ensayos clínicos en la prevención farmacológica
Ricart,Javier J.;
Medicina (Buenos Aires) , 2004,
Abstract: the following review article focuses on chemoprevention clinical trials of breast cancer. to date, serms (selective estrogen receptor modulators) have been the most studied drugs. four randomized trials with tamoxifen vs. placebo have been performed and two with raloxifene are being carried out. two tamoxifen trials showed between 30 and 50% reduction in breast cancer incidence. however, two other studies showed no statistical differences. moreover, the real impact on mortality that these therapies could have is still unknown. this article includes a revision of trials that evaluated the relationship between daily vitamin intake and breast cancer. a follow up of these trials will give us answers about which patients will benefit from chemoprevention therapies.
Modelo de Negocio: El eslabón perdido en la dirección estratégica
Joan E. Ricart
Universia Business Review , 2009,
Abstract: Artículo introductorio a este número especial sobre modelos de negocio donde se define el concepto y se elabora su relación con estrategia y con competencia en general. También se resumen y contextualizan los artículos de este número.
Endocarditis infecciosa producida por Bartonella quintana
Javier José Ricart
Medicina (Buenos Aires) , 2008,
Abstract:
Quimioprevención del Cáncer de Mama: Ensayos clínicos en la prevención farmacológica Chemoprevention of breast cancer. Clinical trials in pharmacological prevention
Javier J. Ricart
Medicina (Buenos Aires) , 2004,
Abstract: El presente artículo trata sobre los ensayos clínicos presentados en quimioprevención del cáncer mamario. Hasta la fecha las drogas más estudiadas han sido los Moduladores Selectivos de los Receptores de Estrógenos (SERMs). Cuatro estudios aleatorizados de tamoxifeno versus placebo fueron publicados y dos con raloxifeno están en curso. Dos de los estudios con tamoxifeno mostraron una reducción de incidencia de cáncer mamario entre el 30 y el 50%, sin embargo otros dos trabajos no mostraron diferencias estadísticamente significativas. A esta controversia se le suma la incertidumbre sobre el verdadero impacto en la mortalidad que pudiera tener este tipo de terapia preventiva. Se citan además diversos estudios que evaluaron la ingesta de vitaminas y su relación con el desarrollo de tumores mamarios. Sin duda alguna el estudio y el seguimiento de los ensayos clínicos nos permitirán dilucidar qué pacientes requieren una terapia, preventiva del desarrollo de un tipo específico de cáncer, que se encuentra lejos de estar exenta de riesgos. The following review article focuses on chemoprevention clinical trials of breast cancer. To date, SERMs (Selective Estrogen Receptor Modulators) have been the most studied drugs. Four randomized trials with tamoxifen vs. placebo have been performed and two with raloxifene are being carried out. Two tamoxifen trials showed between 30 and 50% reduction in breast cancer incidence. However, two other studies showed no statistical differences. Moreover, the real impact on mortality that these therapies could have is still unknown. This article includes a revision of trials that evaluated the relationship between daily vitamin intake and breast cancer. A follow up of these trials will give us answers about which patients will benefit from chemoprevention therapies.
Papers from Euroconference on Molecular Mechanism of Heterogeneous Catalysis Held in San Feliu de Guixols (Spain) in June 2001
Francesc Illas,Josep Manel Ricart
International Journal of Molecular Sciences , 2001, DOI: 10.3390/i2050165
Abstract: No abstract available
"Sistema de Información Sanitaria sobre Lesionados de Tráfico" (SISLET): Fuentes de información
Ricart i de Mesones,Isabel;
Index de Enfermería , 2005, DOI: 10.4321/S1132-12962005000100012
Abstract: description of a system of sanitary information on injured persons of traffic. the aims(lenses) are: to know the characteristics of the group capable of getting hurt for traffic accident; to know the dimension of the problem; to know the needs of sanitary resources; to spread the results in conference to developing preventive campaigns. description of the used measurements and of the most important indicators. description and limitations of the sources(fountains) of information suitable(adapted) for a sislet and of the phases of execution of the system.
"Sistema de Información Sanitaria sobre Lesionados de Tráfico" (SISLET): Fuentes de información Information Sources of a Health Information System on Traffic Injuries
Isabel Ricart i de Mesones
Index de Enfermería , 2005,
Abstract: Descripción de un sistema de información sanitaria sobre lesionados de tráfico. Los objetivos de este sistema de información son: conocer las características del grupo susceptible de lesionarse por accidente de trafico; saber la dimensión del problema; conocer las necesidades de recursos sanitarios; difundir los resultados en vistas a desarrollar campa as preventivas. Descripción de las medidas utilizadas y de los indicadores más importantes. Descripción y limitaciones de las fuentes de información adecuadas para un SISLET y de las fases de ejecución del sistema. Description of a system of sanitary information on injured persons of traffic. The aims(lenses) are: to know the characteristics of the group capable of getting hurt for traffic accident; to know the dimension of the problem; to know the needs of sanitary resources; to spread the results in conference to developing preventive campaigns. Description of the used measurements and of the most important indicators. Description and limitations of the sources(fountains) of information suitable(adapted) for a SISLET and of the phases of execution of the system.
Innovación en modelos de negocio: La Base de la Pirámide como campo de experimentación
Juliana Mutis,Joan Enric Ricart
Universia Business Review , 2008,
Abstract: Los modelos de negocio en los mercados de renta baja brindan grandes oportunidades para desarrollar soluciones innovadoras que colaboren efectivamente con la reducción de pobreza y generen capacidades, y productos que mejoren la competitividad de la empresa. Atender a la mayoría de la población mundial requiere innovaciones radicales, tanto tecnológicas, como en los modelos de negocio. Las empresas necesitarán revaluar su proposición de valor. Se exigirá un nuevo nivel de eficiencia de capital, y nuevas maneras para mesurar los éxitos financieros.
Experiments on the Release of CMOS-Micromachined Metal Layers
Daniel Fernández,Jordi Ricart,Jordi Madrenas
Journal of Sensors , 2010, DOI: 10.1155/2010/937301
Abstract: We present experimental results on the release of MEMS devices manufactured using the standard CMOS interconnection metal layers as structural elements and the insulating silicon dioxide as sacrificial layers. Experiments compare the release results of four different etching agents in a CMOS technology (hydrofluoric acid, ammonium fluoride, a mixture of acetic acid and ammonium fluoride, and hydrogen fluoride), describe various phenomena found during the etching process, and show the release results of multilayer structures. 1. Introduction During the last decades, many efforts in microelectronics technology have been focused on miniaturization and cost reduction due to the ubiquitous use of electronic portable devices in modern life. New paradigms, as System on Chip (SoC), addressed those challenges by integrating as much electronics as possible in a single package. Later, as sensors begun to be part of many portable devices, the ultimate goal became the sensor integration in the same package together with the electronic circuits, in the so-called Sensing System on Chip (SSoC) [1]. There are many SSoC solutions based on a Multichip Module (MCM), where the sensor and circuit are packaged together but not monolithically; that is, they are in different dies that are electrically connected either with wire-bonding or flip-chip techniques. Monolithic integration, however, can substantially reduce the manufacturing costs and, at the same time, improve the performance of the sensing system as noise and parasitics are greatly reduced due to the shrinking of interconnection lengths. Monolithic approaches for MEMS-CMOS can be classified [2] in three main categories: (i)pre-CMOS: when the microsystem is manufactured before the CMOS circuitry [3, 4],(ii)intra-CMOS: when the MEMS is manufactured between the regular fabrication steps of the CMOS circuit [5],(iii) post-CMOS, when the microsystem is manufactured after the CMOS circuit. There are two main variations of the post-CMOS approach. When the microsystem is fabricated by deposition of additional layers above the CMOS wafer, it is called MEMS on top [6, 7]; but if the CMOS layers themselves are used for manufacturing the microsystem, we refer to it as CMOS micromachining. CMOS micromachining relies on using the own layers of the CMOS process as structural layers for the MEMS device, thereby obtaining an effective monolithic integration between sensor and its electronics. Three micromachining techniques have been proposed in the literature for MEMS release, Deep Reactive Ion Etching (DRIE) [8] (combined with
Evolución del donante después de la nefrectomía: Morbi-mortalidad operatoria y postoperatoria e impacto a largo plazo de la nefrectomía
Oppenheimer,F.; Rossich,E.; Ricart,M.J .;
Archivos Espa?oles de Urología (Ed. impresa) , 2005, DOI: 10.4321/S0004-06142005000600012
Abstract: the increase of living donor kidney transplants has prompted new interest for better knowledge of the risks of mobidity and mortality and long-term consequences of nephrectomy. peroperative morbidity varies in revised series, partially in relation to surgical technique: laparoscopic or open nephrectomy. we review the most frequent complications by surgical technique. in the long term, the causes of mortality among donors are similar to general population with aging.
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