Results 21 to 30 of about 27,759,159 (289)

Cryogenic Primary Standard for Optical Fiber Power Measurement [PDF]

, 2018
NIST has completed commissioning of a new, state-of-the-art cryogenic primary standard for optical fiber power measurement and calibration. It establishes for the first time, a direct traceability route between the device under test and the primary ...
White, Malcolm
core   +1 more source

The state primary standard of luminous flux for metrological support of measurements of led lamps in Ukraine

Ukrainian Metrological Journal, 2017
Describes the modern problems in the measurements of the luminous flux of LED lamps associated with their emission spectra, and describes the state primary standard of luminous flux, methods of reproducing the unit of luminous flux and transferring it to the working light sources.
openaire   +4 more sources

Development of a reference material for the composition of 0.1 m potassium dichromate solution. Certified reference material GSO 10992-2017

Стандартные образцы, 2019
This paper describes key stages in the development and investigation of a high-precision certified reference material (CRM) for the composition of potassium dichromate solution.
A. Yu. Shimolin, A. V. Sobina
doaj   +1 more source

Comparação entre métodos de medição da camada semi-redutora em radiologia

Brazilian Journal of Radiation Sciences, 2021
The Half Value Layer (HVL) is a parameter used in Quality Control (QC), to evaluate the X-ray beam quality. The HVL can be measured through the X-ray primary beam attenuation measurement using knew thickness slabs of 99% purity aluminum (M1) or by ...
Denyel Jefferson Prado Faria, Rafael Figueiredo Pohlmann Simões, Fernando Mecca Augusto, Leonardo Vieira Travassos, Beneth Costa Gomes   +4 more
doaj   +1 more source

Reference materials of catalytic activity as a means of ensuring the metrological traceability of measurement results. KATAL

Стандартные образцы, 2019
Introduction. The article considers the problems of metrological support of catalytic activity measurements. The paper gives certain characteristics of the State Primary Special Measurement Standard for the unit of catalytic activity – KATAL and examines
E. V. Kulyabina, O. N. Melkova, E. A. Guskova, T. V. Grebennikova   +3 more
doaj   +1 more source

Detailed comparisons of airborne formaldehyde measurements with box models during the 2006 INTEX-B and MILAGRO campaigns: potential evidence for significant impacts of unmeasured and multi-generation volatile organic carbon compounds [PDF]

Atmospheric Chemistry and Physics, 2011
Detailed comparisons of airborne CH₂O measurements acquired by tunable diode laser absorption spectroscopy with steady state box model calculations were carried out using data from the 2006 INTEX-B and MILARGO campaign in order to ...
A. Fried, C. Cantrell, J. Olson, J. H. Crawford, P. Weibring, J. Walega, D. Richter, W. Junkermann, R. Volkamer, R. Sinreich, B. G. Heikes, D. O'Sullivan, D. R. Blake, N. Blake, S. Meinardi, E. Apel, A. Weinheimer, D. Knapp, A. Perring, R. C. Cohen, H. Fuelberg, R. E. Shetter, S. R. Hall, K. Ullmann, W. H. Brune, J. Mao, X. Ren, L. G. Huey, H. B. Singh, J. W. Hair, D. Riemer, G. Diskin, G. Sachse   +32 more
doaj   +1 more source

Knowledge of home gardening and anthropometric status of adult women in Odeda Local Government, Abeokuta, Ogun State, Nigeria

International Journal on Food, Agriculture and Natural Resources, 2023
A healthy lifestyle and illness prevention depend on adequate nutrition, and homestead food production, including home gardening, is one way to increase access and lower the cost of healthy foods. This study was carried out in Odeda Local Government Area
Jumoke Georgina ILO, Oluseye Olusegun Onabanjo, Aderayo Maryam Hamzat   +2 more
doaj   +1 more source

Systematic Review of Methods Used for Food Pairing with Coffee, Tea, Wine, and Beer

Beverages, 2021
The current article is aimed at systematically reviewing the research methods used for food pairing with coffee, tea, wine, and beer. The primary aim of this review was to elucidate the state-of-the-art methods used for analysing food and beverage ...
Christina J. Birke Rune, Morten Münchow, Federico J. A. Perez-Cueto   +2 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld, Scott H. Maurer, Michelle D. Watkinson, John Nury, Elise Barberis, Molly C. Mack   +5 more
wiley   +1 more source

UNCERTAINTY EVALUATION OF THE DISSIPATION FACTOR IN THE CALIBRATION OF PRECISION CAPACITANCE STANDARDS

Технічна електродинаміка
This paper presents a methodological and metrological approach to thecalibration of precision capacitance standards with respect to the dissipation factor (loss factor) at the State Primary Standard of Electrical Capacitance and Dissipation Factor.
S.M. Shevkun, V.P. Kvasnikov, M.V. Dobroliubova, O.V. Statsenko, M.S. Shevkun   +4 more
doaj   +1 more source