Estudio comparativo del sellado total de tres selladores

Buscando el éxito de la terapia endodóntica sabemos que uno de los ítems más difíciles dentro de nuestra especialidad es lograr la hermeticidad del conducto; a través de un sellador ideal. Hoy día seguimos buscando un sellador que cumpla con todos los requisitos esperados Objetivo: El objetivo de este trabajo fue estudiar en forma comparativa el sellado en la totalidad del conducto por medio de la técnica de transparentación. Los selladores endodónticos utilizados en esta oportunidad son el cemento de Grossman, el sellador de CPM Sealer y Roeko Seal.Facultad de Odontologí

Estudio comparativo del sellado total de tres selladores

Buscando el éxito de la terapia endodóntica sabemos que uno de los ítems más difíciles dentro de nuestra especialidad es lograr la hermeticidad del conducto; a través de un sellador ideal. Hoy día seguimos buscando un sellador que cumpla con todos los requisitos esperados Objetivo: El objetivo de este trabajo fue estudiar en forma comparativa el sellado en la totalidad del conducto por medio de la técnica de transparentación. Los selladores endodónticos utilizados en esta oportunidad son el cemento de Grossman, el sellador de CPM Sealer y Roeko Seal.Facultad de Odontologí

Estudio comparativo del sellado total de tres selladores

Buscando el éxito de la terapia endodóntica sabemos que uno de los ítems más difíciles dentro de nuestra especialidad es lograr la hermeticidad del conducto; a través de un sellador ideal. Hoy día seguimos buscando un sellador que cumpla con todos los requisitos esperados Objetivo: El objetivo de este trabajo fue estudiar en forma comparativa el sellado en la totalidad del conducto por medio de la técnica de transparentación. Los selladores endodónticos utilizados en esta oportunidad son el cemento de Grossman, el sellador de CPM Sealer y Roeko Seal.Facultad de Odontologí

St. Patrick’s Day 2015 geomagnetic storm analysis based on Real Time Ionosphere Monitoring

A detailed analysis is presented for the days in March, 2015 surrounding St. Patrick’s Day 2015 geomagnetic storm, based on the existing real-time and near real-time ionospheric models (global or regional) within the group, which are mainly based on Global Navigation Satellite Systems (GNSS) and ionosonde data. For this purpose, a variety of ionospheric parameters is considered, including Total Electron Content (TEC), F2 layer critical frequency (foF2), F2 layer peak (hmF2), bottomside halfthickness (B0) and ionospheric disturbance W-index. Also, ionospheric high-frequency perturbations such as Travelling Ionospheric Disturbances (TIDs), scintillations and the impact of solar flares facing the Earth will be presented to derive a clear picture of the ionospheric dynamicsPostprint (published version

Commercial fisheries in a mega unregulated floodplain river: assessment of the most favourable hydrological conditions for its preservation

This paper deals with the hydrological variability effects on the primary commercial fish species inhabiting the main channel and the floodplain of the large Paraná River in its middle reaches in Argentina. Analysing more than eight decades (1935–2016) of information on the most frequent and abundant commercial species in conjunction with hydrological levels and temperature, our results show that spring–summer floods of a certain magnitude (c. 6 m) and durations (> 80 days) are crucial for sustaining commercial fisheries. Moreover, the frequency of these floods was modulated by the decadal climatic fluctuations that have occurred over the past 100 years in the Paraná Basin. An insight into the probable incidence of some anthropogenic influences is also provided.Fil: Rabuffetti, Ana Pia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Abrial, Elie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Blettler, Martin Cesar Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Eurich, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Eberle Folmer, Eliana Gisel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentin

Utilization of mechanical power and associations with clinical outcomes in brain injured patients. a secondary analysis of the extubation strategies in neuro-intensive care unit patients and associations with outcome (ENIO) trial

BackgroundThere is insufficient evidence to guide ventilatory targets in acute brain injury (ABI). Recent studies have shown associations between mechanical power (MP) and mortality in critical care populations. We aimed to describe MP in ventilated patients with ABI, and evaluate associations between MP and clinical outcomes.MethodsIn this preplanned, secondary analysis of a prospective, multi-center, observational cohort study (ENIO, NCT03400904), we included adult patients with ABI (Glasgow Coma Scale <= 12 before intubation) who required mechanical ventilation (MV) >= 24 h. Using multivariable log binomial regressions, we separately assessed associations between MP on hospital day (HD)1, HD3, HD7 and clinical outcomes: hospital mortality, need for reintubation, tracheostomy placement, and development of acute respiratory distress syndrome (ARDS).ResultsWe included 1217 patients (mean age 51.2 years [SD 18.1], 66% male, mean body mass index [BMI] 26.3 [SD 5.18]) hospitalized at 62 intensive care units in 18 countries. Hospital mortality was 11% (n = 139), 44% (n = 536) were extubated by HD7 of which 20% (107/536) required reintubation, 28% (n = 340) underwent tracheostomy placement, and 9% (n = 114) developed ARDS. The median MP on HD1, HD3, and HD7 was 11.9 J/min [IQR 9.2-15.1], 13 J/min [IQR 10-17], and 14 J/min [IQR 11-20], respectively. MP was overall higher in patients with ARDS, especially those with higher ARDS severity. After controlling for same-day pressure of arterial oxygen/fraction of inspired oxygen (P/F ratio), BMI, and neurological severity, MP at HD1, HD3, and HD7 was independently associated with hospital mortality, reintubation and tracheostomy placement. The adjusted relative risk (aRR) was greater at higher MP, and strongest for: mortality on HD1 (compared to the HD1 median MP 11.9 J/min, aRR at 17 J/min was 1.22, 95% CI 1.14-1.30) and HD3 (1.38, 95% CI 1.23-1.53), reintubation on HD1 (1.64; 95% CI 1.57-1.72), and tracheostomy on HD7 (1.53; 95%CI 1.18-1.99). MP was associated with the development of moderate-severe ARDS on HD1 (2.07; 95% CI 1.56-2.78) and HD3 (1.76; 95% CI 1.41-2.22).ConclusionsExposure to high MP during the first week of MV is associated with poor clinical outcomes in ABI, independent of P/F ratio and neurological severity. Potential benefits of optimizing ventilator settings to limit MP warrant further investigation

Relationship between the Clinical Frailty Scale and short-term mortality in patients ≥ 80 years old acutely admitted to the ICU: a prospective cohort study.

BACKGROUND: The Clinical Frailty Scale (CFS) is frequently used to measure frailty in critically ill adults. There is wide variation in the approach to analysing the relationship between the CFS score and mortality after admission to the ICU. This study aimed to evaluate the influence of modelling approach on the association between the CFS score and short-term mortality and quantify the prognostic value of frailty in this context. METHODS: We analysed data from two multicentre prospective cohort studies which enrolled intensive care unit patients ≥ 80 years old in 26 countries. The primary outcome was mortality within 30-days from admission to the ICU. Logistic regression models for both ICU and 30-day mortality included the CFS score as either a categorical, continuous or dichotomous variable and were adjusted for patient's age, sex, reason for admission to the ICU, and admission Sequential Organ Failure Assessment score. RESULTS: The median age in the sample of 7487 consecutive patients was 84 years (IQR 81-87). The highest fraction of new prognostic information from frailty in the context of 30-day mortality was observed when the CFS score was treated as either a categorical variable using all original levels of frailty or a nonlinear continuous variable and was equal to 9% using these modelling approaches (p < 0.001). The relationship between the CFS score and mortality was nonlinear (p < 0.01). CONCLUSION: Knowledge about a patient's frailty status adds a substantial amount of new prognostic information at the moment of admission to the ICU. Arbitrary simplification of the CFS score into fewer groups than originally intended leads to a loss of information and should be avoided. Trial registration NCT03134807 (VIP1), NCT03370692 (VIP2)

Boundary conditions in thermal models : An application to the KTB site, Germany

International audienceDeep temperature estimations are important for Theological studies of the crust and also for the planning of deep drill holes. Thermal modeling requires the input of realistic boundary conditions in order to obtain reliable values for the temperature at depth. Boundary conditions necessary for thermal models may be inferred from geochemical and geophysical parameters measured in the field. Numerical solutions of heat equations can be obtained through finite element and finite difference schemes in one, two or three dimensions, taking into account several assumptions regarding the medium parameters, such as homogeneity and anisotropy of thermal conductivity. In this paper we present one and two-D models and highlight the differences between them. The Oberpfalz area was selected to test the model and boundary conditions, because geochemical and geophysical data were available to estimate the boundary conditions in our model and temperatures at depth have been actually measured at the KTB borehole. A good agreement between the calculated and measured temperatures is obtained for a 2-D model with appropriate boundary conditions from geochemical and geophysical data.Las estimaciones de la temperatura a profundidad son de suma importancia para los estudios reológicos de la corteza y también para una planeación correcta de la perforación de pozos profundos. La modelación térmica requiere de condiciones de frontera reales, para así poder obtener valores confiables de la temperatura a profundidad. Las condiciones de frontera necesarias para los modelos térmicos pueden ser inferidas a partir de parámetros geoquímicos y geofísicos medidos en el campo.Se pueden obtener soluciones numéricas de las ecuaciones de transferencia de calor a través de modelos de elementos finitos o de diferencias finitas para una, dos o tres dimensiones, tomando en cuenta varias suposiciones en relación con los parámetros del medio, tales como homogeneidad y anisotropía de la conductividad térmica. En este trabajo presentamos modelos uni- y bi-dimensionales y resaltamos las diferencias entre ambos.El área de Oberpfalz fue seleccionada para probar el modelo y las condiciones de frontera debido a que los datos geoquímicos y geofísicos se encontraban disponibles para estimar las condiciones de frontera, ya que las temperaturas a profundidad habían sido medidas en el pozo KTB. Se encontró concordancia entre las temperaturas medidas y las calculadas para el modelo bidimensional que incluía condiciones de frontera inferidas a partir de los datos geoquímicos y geofísicos