Results 1 to 10 of about 648,618 (252)

BATING A REFERENCE INSTALLATION BASED ON CONTROLLED-POTENTIAL COULOMETRY METOD IN THE FRAME OF IMPROVING THE STATE PRIMARY STANDARD GET 176 AND ITS MEASUREMENT CAPABILITIES

open access: yesСтандартные образцы, 2017
The results of developing of reference installation, based on a controlled-potential coulometry, in the frame of improving the State primary standard of the units of mass (molar) fraction and mass (molar) concentration of a component in the liquid and ...
V. M. Zyskin   +3 more
doaj   +2 more sources

Development of alumina-based porosity reference materials for the mercury porosimetry method

open access: yesСтандартные образцы, 2020
This paper presents the results of a study on the development of alumina-based porosity reference materials (RMs), which are intended for controlling the accuracy of the measurement results obtained using the mercury porosimetry method.
E. P. Sobina
doaj   +1 more source

Integrating GRU with a Kalman Filter to Enhance Visual Inertial Odometry Performance in Complex Environments

open access: yesAerospace, 2023
To enhance system reliability and mitigate the vulnerabilities of the Global Navigation Satellite Systems (GNSS), it is common to fuse the Inertial Measurement Unit (IMU) and visual sensors with the GNSS receiver in the navigation system design ...
Tarafder Elmi Tabassum   +3 more
doaj   +1 more source

The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures

open access: yesСтандартные образцы, 2019
Currently, in the Russian Federation, the metrological traceability of certified reference materials of the composition of gas mixtures in cylinders under pressure produced by manufacturers of certified reference materials is carried out in accordance ...
L. A. Konopelko   +2 more
doaj   +1 more source

Effects of Educational Video on Pre-operative Anxiety in Children - A Randomized Controlled Trial

open access: yesFrontiers in Pediatrics, 2021
Objective: Audio-visual interventions have been used to provide relevant patient information to reduce pre-operative anxiety in children. The aim of the study was to investigate whether self-reported state anxiety in children could be reduced by ...
Valentina Härter   +6 more
doaj   +1 more source

Developing a reference material set for the magnetic properties of NdFeB alloy-based hard magnetic materials

open access: yesСтандартные образцы, 2019
Introduction The introduction indicates the need for the use of permanent magnets in various technology fields. The necessity of measuring the limit magnetic hysteresis loop for the correct calculation of magnetic system parameters is considered.
E. A. Volegova   +3 more
doaj   +1 more source

Development of the reference material of nanoporous zeolite

open access: yesСтандартные образцы, 2020
The article is devoted to the development of a reference material of the sorption roperties of nanoporous zeolite, which ensures metrological traceability of measurement results to the State primary measurement standard of units for specific gas ...
E. P. Sobina
doaj   +1 more source

Multiparametric reference materials for metrological support in the area of coating parameter control

open access: yesСтандартные образцы, 2019
The present work analyses the state and development prospects of metrological support and standardization of in the field of measuring surface density, thickness and chemical composition of coatings.
V. V. Kazantsev, A. S. Vasilyev
doaj   +1 more source

The new certified reference material of chlorobenzene as a means of providing the metrological traceability for calibration and measurements

open access: yesСтандартные образцы, 2020
The article is devoted to the development of a reference material of chlorobenzene composition, providing metrological traceability of measurement results to the State primary measurement standard of units of mass (molar) fraction and mass (molar ...
I. Y. Tkachenko   +3 more
doaj   +1 more source

Development of the state secondary measurement standard and certified reference materials for composition on the basis of liquid and gas chromatography

open access: yesСтандартные образцы, 2017
The article is devoted to the development of the state secondary measurement standard of mass fraction units and mass (molar) concentration of organic components in liquid and solid substances and materials based on gas and liquid chromatography.
Olga S. Shokhinaa   +6 more
doaj   +1 more source

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