Datos convertidos
{
"id": "I19-R120-10915-139408",
"record_format": "dspace",
"spelling": [
"I19-R120-10915-1394082022-07-13T04:04:28Z http:\/\/sedici.unlp.edu.ar\/handle\/10915\/139408 issn:0092-0606 issn:1573-0689 On the dielectric spectra of proteins in conducting media Ruderman, Graciela Xammar Oro, Juan Roberto de 1991 2022-07-12T18:37:16Z en F\u00edsica Ciencias Exactas Proteins dielectric spectra Maxwell\u2019s frequency permittivity conductivity The effect of conductivity on the dielectric measurements of proteins is studied. For that purpose the dielectric spectra (0.03\u201313 MHz) of serum albumin and myoglobin in solutions of varying conductivities were recorded. The results presented confirm that Maxwell's prediction of a threshold frequency in conducting materials also holds for protein solutions. The threshold frequency of a serum albumin solution is experimentally determined and the ionic screening of the electric field when performing dielectric spectra of these samples discussed. Three distinct frequency regions must be considered: a low frequency region where the sample behaves like a conductor; an intermediate region centered around the threshold frequency where the free charges partially screen the fixed charges; and a high frequency region where the sample behaves like a good dielectric. Dielectric measurements in the low frequency region defined above, are not possible. Instituto de F\u00edsica de L\u00edquidos y Sistemas Biol\u00f3gicos Articulo Articulo http:\/\/creativecommons.org\/licenses\/by\/4.0\/ Creative Commons Attribution 4.0 International (CC BY 4.0) application\/pdf 167-174"
],
"institution": [
"Universidad Nacional de La Plata"
],
"institution_str": "I-19",
"repository_str": "R-120",
"collection": [
"SEDICI (UNLP)"
],
"language": [
"Ingl\u00e9s"
],
"topic": [
"F\u00edsica",
"Ciencias Exactas",
"Proteins",
"dielectric spectra",
"Maxwell\u2019s frequency",
"permittivity",
"conductivity"
],
"spellingShingle": [
"F\u00edsica",
"Ciencias Exactas",
"Proteins",
"dielectric spectra",
"Maxwell\u2019s frequency",
"permittivity",
"conductivity",
"Ruderman, Graciela",
"Xammar Oro, Juan Roberto de",
"On the dielectric spectra of proteins in conducting media"
],
"topic_facet": [
"F\u00edsica",
"Ciencias Exactas",
"Proteins",
"dielectric spectra",
"Maxwell\u2019s frequency",
"permittivity",
"conductivity"
],
"description": "The effect of conductivity on the dielectric measurements of proteins is studied. For that purpose the dielectric spectra (0.03\u201313 MHz) of serum albumin and myoglobin in solutions of varying conductivities were recorded. The results presented confirm that Maxwell's prediction of a threshold frequency in conducting materials also holds for protein solutions. The threshold frequency of a serum albumin solution is experimentally determined and the ionic screening of the electric field when performing dielectric spectra of these samples discussed. Three distinct frequency regions must be considered: a low frequency region where the sample behaves like a conductor; an intermediate region centered around the threshold frequency where the free charges partially screen the fixed charges; and a high frequency region where the sample behaves like a good dielectric. Dielectric measurements in the low frequency region defined above, are not possible.",
"format": [
"Articulo",
"Articulo"
],
"author": [
"Ruderman, Graciela",
"Xammar Oro, Juan Roberto de"
],
"author_facet": [
"Ruderman, Graciela",
"Xammar Oro, Juan Roberto de"
],
"author_sort": "Ruderman, Graciela",
"title": "On the dielectric spectra of proteins in conducting media",
"title_short": "On the dielectric spectra of proteins in conducting media",
"title_full": "On the dielectric spectra of proteins in conducting media",
"title_fullStr": "On the dielectric spectra of proteins in conducting media",
"title_full_unstemmed": "On the dielectric spectra of proteins in conducting media",
"title_sort": "on the dielectric spectra of proteins in conducting media",
"publishDate": [
"1991"
],
"url": [
"http:\/\/sedici.unlp.edu.ar\/handle\/10915\/139408"
],
"work_keys_str_mv": [
"AT rudermangraciela onthedielectricspectraofproteinsinconductingmedia",
"AT xammarorojuanrobertode onthedielectricspectraofproteinsinconductingmedia"
],
"_version_": 1741622799214051328
}