A5084098056- Radiative Heat Transfer Studies
- Brake Systems and Friction Analysis
- Landslides and related hazards
- Advanced Sensor Technologies Research
- Veterinary Equine Medical Research
- Textile materials and evaluations
- Calibration and Measurement Techniques
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Building Energy and Comfort Optimization
- Advanced Chemical Sensor Technologies
- Flow Measurement and Analysis
- Vehicle Dynamics and Control Systems
- Scientific Research and Discoveries
- Vibration Control and Rheological Fluids
- Acoustic Wave Phenomena Research
- Scientific Measurement and Uncertainty Evaluation
- Tree Root and Stability Studies
- Geological and Geophysical Studies Worldwide
- Geophysical and Geoelectrical Methods
- Italian Fascism and Post-war Society
- Greenhouse Technology and Climate Control
- Material Science and Thermodynamics
- Urban Transport and Accessibility
- Aerogels and thermal insulation
- Infrared Thermography in Medicine
Universidad Andrés Bello
2022-2024
Universidad Nacional de Colombia
2023-2024
Instituto Nacional de Metrología de Colombia
2018-2022
Universidad del Desarrollo
2020
Clinica Santa Maria
2020
California Department of Transportation
2020
Instituto Nacional de Metrologia, Qualidade e Tecnologia
2020
The modeling of heat transfer in fibrous materials is important for designing and improving thermal insulation systems. At high temperatures low sample density, radiation expected to be the primary mode insulation. Currently, most common successful models modelling at require use semi-empirical methods. main limitation this approach that model parameters need determined from measurements each possible material re-determined if morphological structure modified, even same material. This paper...
Poor pedestrian infrastructure and road connectivity can deter people from walking to local parks. Using data the ground observation of sidewalk Google Earth, research was undertaken evaluate fundamental accessibility features built environment such as availability quality well connectivity. The study analysed network density, sidewalks within a neighbourhood park's buffer area, by using ‘sidewalk index (SAQI)’ ‘connectivity index’. SAQI recognises that access is dependent on pedestrian's...
This study evaluated different models for calculating the effective thermal conductivity of fibrous insulation by comparing predicted values with certified Standard Reference Material 1450c, Fibrous Glass Board. comparison involved coupled effects radiation and conduction heat transfer. To support these comparisons, fiber diameter distribution was measured using X-ray computed tomography, this used in several transfer considered paper. For evaluation radiative transfer, diffusion...
Capacitive hygrometers are widely used in industrial and environmental measurements. One of the limitations these sensors is their temperature dependence. While temperatures beyond 50 °C effect has been proven to be significant, for standard conditions calibration laboratories magnitude this dependence not rigorously studied. This paper presents analysis results a study influence capacitive designed monitoring conditions. Ninety measurements were taken on 15 models using two-pressure...
Abstract The analysis and results of a sensitivity study four procedural variables on the calibration response two commercial heat-flow-meter apparatuses in conformance with ASTM Test Method C518, Standard for Steady-State Thermal Transmission Properties by Means Heat Flow Meter Apparatus, are presented. ranged plate size from 305 mm to 610 were calibrated using Reference Materials 1450c, Fibrous Glass Board, 1453, Expanded Polystyrene issued National Institute Standards Technology. A major...
Brake-system dynamics still represents a key question for the understanding and quantification of self-excited vibrations in automotive applications. Conventionally, brake systems is analyzed by using complex eigenvalue analysis, which consists linearizing nonlinear equations motion at sliding state solving quadratic problem there. This method, however, only reproduces local vibration behavior, tends to overestimate number instabilities, its resulting eigenvectors do not provide amplitudes...
Excess energy from photosynthesis can be collected through biophotovoltaic platforms to generate green electrical power. This research evaluated the in-situ performance of different CAM (Crassulaceae acid metabolism) plants Calama city located in Atacama Desert for recovery as cell (BPV) using AISI 316L and Cu electrodes. The species were Aloe perfoliata, Cereus jamacaru, Austrocylindropuntia subulata, Agave potatorum, Malephora crocea, Kalanchoe daigremontiana. results indicate that K....
This paper presents an analysis of the correlation effect in uncertainty estimation a system for humidity generation based on two pressures principle. In order to compare validity calculations, methods evaluating uncertainty, including between input variables, were used. The first one was classical approximation applicability central limit theorem, while second consisted propagation distributions using Monte Carlo simulations. obtained results show that usual assumption negligible...
Slim fixed-point cells are an economic and suitable alternative for calibration of industrial platinum resistance thermometers, which widely used in research applications. The most relevant disadvantage slim is related with thermal effects produced by interactions between the cell furnace realization fixed-points. This work presents implementation a two-dimensional numerical model that considers transient heat transfer due to conduction, radiation latent heat. main goal was evaluate...
En este trabajo se presenta el proceso de construcción e implementación un sistema calibración termómetros clínicos oído en Laboratorio Temperatura y Humedad del Grupo Área Técnica 3 la Subdirección Metrología Física Instituto Nacional Colombia, INM, usando una cavidad cuerpo negro termómetro contacto como patrones medida. Como parte evaluación reproducibilidad método medición diseñó experimento basado 54 mediciones independientes llevadas a cabo por tres operarios diferente temperaturas (35...
In this study, a methodology to measure fuel consumption for light duty vehicles (LDV) in Colombia was elaborated based on existing methodologies from road transportation worldwide. This proposed as tool the evaluation of energy efficiency strategies applied vehicles, well establishing baseline measurement, control, and regulation fossil fuels metrological criteria. Additionally, capacities measurement within were analyzed, procedures stated by Code Federal Regulations United States America...
Background: Theoretically, the exercise of good medicine requires physicians who possess and practice virtues. There are reasons to believe that virtue ethics would be highly appreciated by patients.
The dynamical analysis of complex structures often suffers from large computational efforts, so that the application substructuring methods has gained increasing importance in last years. Substructuring enables dividing finite element models and reducing resulting multiple bodies, yielding a reduction of, this case, eigenvalue calculation time. This method is used to predict appearance friction-induced vibrations such as squeal brake systems. Since very sensitive changes parameter values,...
The modeling of heat transfer in fibrous materials is important for designing and improving thermal insulation systems. At high temperatures low sample density, radiation expected to be the primary mode insulation. Currently, most common successful models modelling at require use semi-empirical methods. main limitation this approach that model parameters need determined from measurements each possible material re-determined if morphological structure modified, even same material. This paper...
La tecnica de lavado broncoalveolar fue utilizada para cuantificar la presencia eritrocitos y otros indicadores hemorragia vias aereas inferiores en 60 Equinos Fina Sangre Carrera edades entre 3 6 anos sometidos a entrenamiento competencia el Hipodromo Chile Club Hipico Santiago. Se realizo un ejercicio prueba 1.000 m todos los animales muestreados. Luego 2 horas se examen endoscopio las respiratorias superiores. Los fueron agrupados segun signos clinicos encontrandose: 20 sin endoscopia...