National Primary Standard for the Units of Relative Humidity of Gases, Molar (Volume) Fraction of Moisture, and Dew/Frost Point Temperature, Get 151-2014

The article presents the results of studies to improve the National primary standard machine for hardness of metals on the shore D scale GET 161-2001, which were performed in FSUE “VNIIFTRI” from 2016 to 2018 in accordance with the technical task of Rosstandart.The improvement was carried out in order to ensure the uniformity of hardness measurements on the Leeb scales. The created new parts of the primary standard machine, which are settings for reproducing hardness numbers on the Leeb scales, are considered. Metrological characteristics of the upgraded and adopted National primary standard machine (GET 161-2019) were investigated, the budget of measurement uncertainty was calculated for reproducing hardness numbers on the Leeb scales.

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New approach to maintaining liquid flow rate stability in national primary standard

Flow Measurement and Instrumentation ◽

10.1016/j.flowmeasinst.2021.101930 ◽

2021 ◽

pp. 101930

Author(s):

N.I. Mikheev ◽

V.M. Molochnikov ◽

D.V. Kratirov ◽

O.A. Dushina ◽

A.A. Paereliy ◽

...

Keyword(s):

Flow Rate ◽

Liquid Flow ◽

Liquid Flow Rate ◽

Primary Standard ◽

New Approach ◽

National Primary Standard

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Observed spatiotemporal changes in air temperature, dew point temperature and relative humidity over Myanmar during 2001–2019

Meteorology and Atmospheric Physics ◽

10.1007/s00703-021-00837-7 ◽

2021 ◽

Vol 134 (1) ◽

Author(s):

Zin Mie Mie Sein ◽

Irfan Ullah ◽

Vedaste Iyakaremye ◽

Kamran Azam ◽

Xieyao Ma ◽

...

Keyword(s):

Relative Humidity ◽

Air Temperature ◽

Dew Point ◽

Point Temperature ◽

Dew Point Temperature ◽

Spatiotemporal Changes

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Internal Cation Mobilities in the Molten Binary Systems KNO3-Sr(NO3)2 and KNO3-Ba(NO3)2

Zeitschrift für Naturforschung A ◽

10.1515/zna-1987-0917 ◽

1987 ◽

Vol 42 (9) ◽

pp. 1021-1023 ◽

Cited By ~ 3

Author(s):

Chao-cheng Yang ◽

Junko Habasaki ◽

Osamu Odawara ◽

Isao Okada

Keyword(s):

Molar Volume ◽

Mole Fraction ◽

Alkaline Earth ◽

Binary Systems ◽

Volume Fraction ◽

Dominant Factor ◽

Coulombic Attraction ◽

Internal Mobility ◽

Relative Differences ◽

Alkaline Earth Cations

The relative differences in internal cation mobilities for the molten binary systems (K, Sr0.5)NO3 and (K, Ba0.5)NO3 have been measured with the Klemm method in the concentration range up to 34 mol% of the alkaline earth cations. From these and available data on the densities and conductivities, the internal mobilities of these cations, bK, bSr and bBa, have been calculated. In these systems bK and bSr or bBa decrease with decreasing concentration of the K+ ion. bK is well expressed by bK = fK ·bK*=fK·[A/(V-V0)] exp (-E/RT), where bK* is the internal mobility of the K+ ion in such melts as (K,Cs)NO3 in which the Coulombic attraction is the dominant factor for the internal mobility of the K+ ion, the constants A, V0, and E being independent of the coion, V is the molar volume of the present mixture and fK the volume fraction of KNO3 in the mixture. At a given mole fraction of K+ ions, the internal mobilities are in the order: Ca<Sr<Ba. This order could be interpreted as the decreasing order of the Coulombic attraction of these cations with the anion.

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