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Tuesday, July 14, 2020 | History

2 edition of Measurement of RF power-absorption in biological specimens (10 to 100 MHz) found in the catalog.

Measurement of RF power-absorption in biological specimens (10 to 100 MHz)

Frank M Greene

Measurement of RF power-absorption in biological specimens (10 to 100 MHz)

by Frank M Greene

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  • 22 Currently reading

Published by Dept. of Commerce, National Bureau of Standards, Institute for Basic Standards, Electromagnetics Division, for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Boulder, Colo, Washington .
Written in English

    Subjects:
  • Electromagnetism -- Physiological effect

  • Edition Notes

    StatementFrank M. Greene ; Electromagnetics Division
    SeriesNBS technical note ; 687, NBS technical note -- 687
    ContributionsInstitute for Basic Standards (U.S.). Electromagnetics Division
    The Physical Object
    Paginationiii, 25, [1] p. :
    Number of Pages25
    ID Numbers
    Open LibraryOL14847708M

    variety of samples such as biological samples, plants and pharmaceutical formulations. Table 1(a)-(e) shows several thin-layer chromatographic systems designed for the analysis of steroids []. Table 1(a): Thin-layer chromatographic analysis of steroids Analyte Stationar y phase Mobile phase Remarks Ref Cholestrol, allylestrenol. The dependence of the electron density and the emission intensity on external parameters during the transitions of the electron power absorption mode is experimentally studied in asymmetric electropositive (neon) and electronegative (CF 4) capacitively coupled radio-frequency spatio-temporal distribution of the emission intensity is measured with phase resolved optical emission Cited by: 5.

    Use Low Voltage FE-SEM to Overcome Challenges of Imaging Biological Specimens Application Note Introduction Biological samples span an incredible range of size scales, composition, structures, and morphology. Over the last few decades two complementary microscopy techniques for biological specimens have moved to theFile Size: KB. The determination of the amount of rheumatoid factor antibody present in a sample. Definition (NCI_CDISC) A measurement of the rheumatoid factor antibody in a biological specimen. Concepts: Laboratory Procedure (T) SnomedCT.

    Basic Principles of Ultrasonic Testing. Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, and more. Radiation Measurement Systems. Website Designed at Homestead™ Design a Website and List Your Business.


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Measurement of RF power-absorption in biological specimens (10 to 100 MHz) by Frank M Greene Download PDF EPUB FB2

Get this from a library. Measurement of Measurement of RF power-absorption in biological specimens book power-absorption in biological specimens (10 to MHz). [Frank M Greene; Institute for Basic Standards (U.S.). Electromagnetics Division.].

Title(s): Measurement of RF power-absorption in biological specimens (10 to MHz)/ Frank M. Greene. Country of Publication: United States Publisher: Cincinnati: U.

Dept. of Health, Education, and Welfare, Public Health Service, Center for Disease Control, National Institute for Occupational Safety and Health, Division of Biomedical and Behavioral Science, Measurement of RF power-absorption in biological specimens (10 to MHz) / By Frank M.

Greene and Institute for Basic Standards (U.S.). Electromagnetics Division. A method is described for accurately determining the radio frequency (rf) power being absorbed by a biological specimen during nonionizing radiation exposure testing using the National Bureau of.

The measurement of biological compounds in body fluids and tissues is a critical component of clinical research and represents an objective endpoint for many trials, especially those involving therapeutic : Mark D. Kellogg. Acoustic absorption has been measured in a series of biological tissue specimens—porcine muscle, renal and fat tissues—by the standard insert-substitution method, as well as by ultrasonic phase by: 4.

The mass and change of mass of biological specimens resulting from variations in environment and nourishment have long been used not only as indications of the physiological well-being of the specimen, but also as a necessary measurement in experiments designed to explain normal and disturbed physiological mechanisms.

If the research is to be conducted under zero gravity, a standard Cited by: 2. A meta description is an HTML tag in the HTML code of your website, which allows you to customize a section of text that describes the page itself.

It plays a role in how your page is seen by search engine crawlers, and how it appears in SERPs. Measurements of electromagnetic properties of materials at microwave frequencies Conference Paper (PDF Available) September with 1, Reads How we measure 'reads'.

Measurement Procedure RAC_1_4E> Rohde & Schwarz 11 3 Measurement Procedure. The measurement setup includes a network analyzer, a software program that can be installed in the VNA or in a remote computer and the sample holder for the material under Size: KB.

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MEASUREMENT SCIENCE REVIEW, Volume 7, Section 2, No. 2, 13 to source d mica window piston liquid For the complex impedance Z&S we have, Fig. 1, [1] Z&s =Z&d tghγ&d, (1) where γd (γd =αd +jβd) is the propagation constant in sample, αd is the loss factor and βd is the phase constant.

Since air is effectively loss free, 0αair =, we can writeCited by: 8. Conference on Precision EM Measurements, London, England, July Guy, A.W., M.

Webb and J.C. Lin, Determination of RF Power Absorption in Man Exposed to HF Fields by Thermographic Studies on Scaled Phantom Models, Conference on Precision EM Measurements, London, England, July A method is decribed for accurately determining the radio frequency (rf) power being absorbed by a biological specimen during nonionizing radiation exposure testing using the National Bureau of Standards RF Near-Field Synthesizer in the frequency range 10 to megahertz.

transmission line with 48 measurement points spaced at 6mm intervals along its length. The spacing between the transmission line elements is approximately 8 cm and a 7 cm x 16 cm specimen block is inserted between the elements—leaving an approximately 1 cm air gap between the specimen and the top line element as shown in Fig.

Size: 1MB. Measurement of Radio Frequency Permittivity of Biological Tissues with an Open-Ended Coaxial Line: Part II—Experimental Results MARIA A. STUCHLY, SENIOR MEMBER, IEEE, T. WHIT ATHEY, GEORGE M. SAMARAS, MEMBER, IEEE, AND GLEN EDWARD TAYLOR 87 A bstmcf —The permittivity of several reference fiquids and seleeted.

This chapter reviews the basic principles governing the diffusion phenomenon and its measurement using magnetic resonance (MR). Diffusion is a mass transport process arising in nature, which results in molecular or particle mixing without requiring bulk motion and magnetic resonance provides a unique opportunity to quantify the diffusional characteristics of a wide range of by: Cardiovascular survey methods / Russell V.

Luepker Collection and analysis of biological specimens Blood sampling Plasma lipids rates have fallen steadily as population levels of risk factors decline and advanced treat- ments are applied.

In others, disease rates are rising as affluence and industrialization. Calorimetry is performed with a calorimeter. Isothermal microcalorimetry (IMC) is a laboratory method for real-time, continuous measurement of the heat flow rate (μJ/sec = μW) and cumulative amount of heat (J) consumed or produced at essentially constant temperature by Classification: Thermal analysis.

For each material, varying thickness specimens were fabricated in order to measure attenuation as a function of penetration distance. Measurements of power loss were taken at 2 MHz intervals from to 2 GHz and from 3 to 8 GHz. Frequency power spectra were discretely generated for each material as a function of thickness.

Detection and Quantitation of NO in Biological Specimens p. In Vivo Detection of NO Generated in Biological Systems p.

Visualization of NO Generation in Biological Systems p. Conclusions and Perspectives p. Acknowledgments p. References p. The Measurement of Oxygen in Vivo Using EPR Techniques Introduction p. The basic biological data transmission and control system influenced by electrical forces.

Determination of power absorption in man exposed to high frequency electromagnetic fields by thermographic measurements on scale models. IEEE Trans Biomed Eng. Sep; 23 (5)–Author: J. W. Frazer, W. D. McDavid, M. Millner.Visit to get more information about this book, to buy it in print, or to download it as a free PDF.