A5003248777- Scientific Measurement and Uncertainty Evaluation
- Advanced Sensor Technologies Research
- Advanced Measurement and Metrology Techniques
- Spectroscopy and Laser Applications
- Atomic and Subatomic Physics Research
- Surface Roughness and Optical Measurements
- Advanced Frequency and Time Standards
- Advanced Electrical Measurement Techniques
- Ultrasound in Clinical Applications
- Radioactive Decay and Measurement Techniques
- Advanced Fiber Optic Sensors
- Respiratory Support and Mechanisms
- Calibration and Measurement Techniques
- Analytical Chemistry and Sensors
- Thermal Regulation in Medicine
Istituto Nazionale di Ricerca Metrologica
2014-2024
University of Padua
2021
A novel realization of an optical pressure standard, alternative to Fabry-Perot cavity-based techniques, is presented. It based on the measurement refractive index a gas through unbalanced homodyne interferometer, designed have one its two arms formed by multi reflection double mirror assembly establish unbalance length larger than 6 m in compact setup. The paper illustrates most important steps concerning realization: estimate pressure-induced deformation temperature control at millikelvin...
Background and Aim. Lung ultrasound (LUS) is a convenient imaging modality in the setting of coronavirus disease-19 (COVID-19) because it easily available, can be performed bedside repeated over time. We herein examined LUS patterns relation to disease severity stage among patients with COVID-19 pneumonia. Methods. retrospective case series analysis confirmed SARS-CoV-2 infection who were admitted hospital recorded history, clinical parameters medications. was scored standardized fashion by...
The 18SIB04 QuantumPascal EMPIR project aims for development of photon-based standards that can replace primary the SI unit pressure, Pascal. In this project, four partners simulated pressure-induced deformation a given Fabry-Pérot cavity, using various versions two types software, COMSOL Multiphysics (R) and ANSYS Workbench. It was demonstrated that, geometry set material parameters, simulations could be performed by with such small discrepancies methodological mistakes simulation...
A novel optical pressure standard, based on a multi-reflection interferometric technique, has been recently developed.It is the measurement of refractive index gas through an unbalanced homodyne interferometer (UINT) and able to measure with relative standard uncertainty 10 ppm at 100 kPa [1].In this work, was used molar polarizability nitrogen, which resulted in agreement recent previous determinations, paving way for using photonic standards as accurate fast transfer pascal.
This report describes a EURAMET bilateral supplementary comparison between Czech CMI and Italian INRIM in low negative gauge pressure gas (nitrogen), denoted as EURAMET.M.P-S12. The digital non-rotating balance FPG8601 manufactured by Fluke/DH-Instruments, USA is normally used for absolute pressures the range from 1 Pa to 15 kPa, but with some modifications it can be also same range. During preparation of visit at last within framework EURAMET.M.P-K4.2010, was agreed perform an additional...
Fabry–Pérot-based refractometry has demonstrated the ability to assess gas pressure with high accuracy and been prophesized be able realize SI unit for pressure, pascal, based on quantum calculations of molar polarizabilities gases. So far, technology mostly limited well-controlled laboratories. However, recently, an easy-to-use transportable refractometer constructed. Although its performance previously assessed under laboratory conditions, serve as actually system, a ring-type comparison...
The INRiM static expansion system has been recently modified in order to improve its performance and extend the working range down 5.10 -4 Pa. A new characterization of performed a preliminary estimate uncertainty evaluated.