Open Access
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No 11 (2014)
К 75-ЛЕТИЮ ЖУРНАЛА
4-7 96
Abstract
In the article is shown the scheme of the reference complex for ensuring the uniformity of length’s measurements in the range of over 24 meters. The current state and prospects of development of the reference complex are examined.
7-10 86
Abstract
A result of the special state primary standard of pressure unit GET 43-73 on range 250-1500 MPa upgrading the state primary standard of pressure unit in the range 10-1600 MPa and of effective area unit for piston pairs of dead-weight pressure gauges in the range 0,05-1 cm2 GET 43-2013 has been created. At the same time a nonexcluded systematic error is diminished by the factor og 10.
11-14 108
Abstract
The construction and operation principle of the laser interferometric mercury manometer as the part of Russian primary standard of absolute pressure are described. The unique feature of manometer is the application of cat's eye type floats damping the surface waves to provide reliable performance of fringe counting system combined with special protective rings stabilizing the contrast of fringes.
15-17 86
Abstract
The results of studies of metrological parameters of a new average power and attenuation standard for fiber-optical communication and information transfer systems are presented. The standard provides the storage, reproduction and transfer in the spectral range of 0,6-1,7 mm of average power unit from 0,1 to 5 mW power range with the relative expanded uncertainty less then 0,002 and a attenuation 0,05 dB to 60 dB with expanded uncertainty less then 0,2 dB.
18-22 82
Abstract
The information on legal aspects, main functions and the structure of State Service of Certified Reference Materials for Composition and Properties of Substances and Materials of the Russian Federation and on the activity of Scientific and Methodical Centre of SSCRM is presented.
22-26 74
Abstract
A class of multidimensional theories of gravity where spatial and temporal variations of the gravitational constant G and the fine structure constant α have a common cause and coincide in value is pointed out. Despite the absence of confident observational data on G variations. arguments in favor of their existence, connected with both the problem of unification of physical interactions and with the well-known «faint young Sun» paradox, are presented. The conclusion on possible nonlinear dependence of G from the cosmological time is drawn.
27-29 88
Abstract
The system of the uniformity of measurements assurance according to a State verification schedule for instruments measuring the optic power of glass optics MI 3439-2014 - is considered.
29-34 67
Abstract
The problems of increasing the accuracy of heat measurements of energy end average power of laser radiation and the development of technique of precision standard calorimetric transducer operation are considered.
34-35 58
Abstract
This paper presents current state and further developments and enhancements of the state standard of total radiance and radiation temperature units. Main missions of the standard are described as well as methods of unit transfer realized in the standard’s setups.
36-37 62
Abstract
The technical characteristics and results of modernization of secondary standards of absolute and excess pressures for the field of defence and security have been considered.
38-39 85
Abstract
The application of low DC measurements in the range 10-16-10-9 A is presented. The principle of operation and metrological characteristics of the state DC unit - ampere - standards: primary GET 4-91 and comparison GVET 4-01-2010 - are considered.
40-43 74
Abstract
The principle of construction of a new standard installation for attenuation measurement in the frequency range 20 Hz - 100 MHz and attenuation range 0 - 120 dB is considered. The features of functional scheme and software are described. The metrological characteristics and the results of experimental study are presented.
43-47 54
Abstract
The algorithm of useful signal separation in presence of background noise permitting to gain the relevant information at signal-noise ratio up to 15 dB is developed. The algorithm efficiency was tested on the model and real signals.
48-51 57
Abstract
The article presents the information on the development of complex of state primary and secondary standards of values units used in the field of physical and chemical measurements including the solution of problems of ensuring the uniformity of measurements in nanosystems industry, harmonious nature management, energy efficiency, energy conservation and nuclear energy, fields.
51-54 165
Abstract
The design of a neutron diffractometer a measuring system for determination of single crystals structure is described. The results of measurements on a test sample from the batch of standard reference materials of quartz diffraction properties are presented. It is shown that this installation has been optimized to the level of high accuracy x-ray diffractometers.
55-57 82
Abstract
The comparative trends in the metrological activity in Russia are examined. The role and place of the Metrological Academy in coordination of scientific research in the field of metrology and instrumentation in the transition to an innovative way of development of the economy are presented.
LINEAR AND ANGULAR MEASUREMENTS
58-61 83
Abstract
An instrument error caused by irregularity of radiation input into the measuring channels of fiber optic communication line has been analyzed. The design of converter in which a proactive correction method is realized has been studied. The results of experimental estimation of the developed hardware-software are presented.
OPTICOPHYSICAL MEASUREMENTS
62-64 99
Abstract
The influence of errors of parabolic mirror segments positioning in space radio telescope «Millimetron» on the point spread function has been a segmented paraboloid phasing control method based on application of auxiliary conic mirrors, mechanically coupled with paraboloid segments has been developed. The method for paraboloid central part form testing is suggested.
MEDICAL AND BIOLOGICAL MEASUREMENTS
65-68 68
Abstract
The features of the ECG signal processing using a band-pass frequency filtering at presence of distorting interferences and noises of different nature were considered. The approach to selection of optimal bandwidth and type of band-pass filter based on the criterion of maximizing the signal-to-noise ratio at the filter’s output and minimizing the distortion of ECG signal with taking into account the considering heart rate variability - was suggested. Two different versions of band-pass filtering realization: the analog active filter of order 2 and digital filter of order 8 - were considered.
PHYSICOCHEMICAL MEASUREMENTS
69-72 100
Abstract
The change of morphology of two-dimensional ensembles of evaporated iron-oxide nanoparticles during programmable low-temperature annealing (20-160 ºC) has been studied by the thermodilatomatry atomic-force method. It is shown that at annealing of nanoparticles ensembles their shrinkage (up to 25 % of the volume) happens due to dehydration, oxidation, and possible coalescence, and spreading on the viscous flow mechanism.
