Search

Aerosol penetration through respirator exhalation valves

<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
  <record>
    <leader>00000nab a2200000 i 4500</leader>
    <controlfield tag="001">MAP20071020351</controlfield>
    <controlfield tag="003">MAP</controlfield>
    <controlfield tag="005">20080418120204.0</controlfield>
    <controlfield tag="007">hzruuu---uuuu</controlfield>
    <controlfield tag="008">940706e19901001usa||||    | |00010|eng d</controlfield>
    <datafield tag="035" ind1=" " ind2=" ">
      <subfield code="a">6800013563</subfield>
    </datafield>
    <datafield tag="040" ind1=" " ind2=" ">
      <subfield code="a">MAP</subfield>
      <subfield code="b">spa</subfield>
    </datafield>
    <datafield tag="084" ind1=" " ind2=" ">
      <subfield code="a">872</subfield>
    </datafield>
    <datafield tag="100" ind1="1" ind2=" ">
      <subfield code="0">MAPA20080062293</subfield>
      <subfield code="a">Bellin, Peter</subfield>
    </datafield>
    <datafield tag="245" ind1="1" ind2="0">
      <subfield code="a">Aerosol penetration through respirator exhalation valves</subfield>
      <subfield code="c">Peter Bellin, William C. Hinds</subfield>
    </datafield>
    <datafield tag="520" ind1=" " ind2=" ">
      <subfield code="a">Aerosol penetration into a mask can occur by three routes: filter penetration, facial seal leaks, and exhalation valve leakage. The first two mechanisms usually are the most important, although the latter can be significant in certain circumstances, such as when the valve is dirty or malfunctioning. This paper adressess the nature and extent of exhalation valve leakage, that is, back leakage of outside air through the exhalation valve as it closes and seals during inhalation</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080585679</subfield>
      <subfield code="a">Higiene industrial</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080605278</subfield>
      <subfield code="a">Contaminantes químicos</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080625054</subfield>
      <subfield code="a">Sustancias tóxicas y peligrosas</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080549534</subfield>
      <subfield code="a">Aerosoles</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080554859</subfield>
      <subfield code="a">Inhalación</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080548094</subfield>
      <subfield code="a">Máscaras</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080601393</subfield>
      <subfield code="a">Equipos respiratorios</subfield>
    </datafield>
    <datafield tag="650" ind1="1" ind2="1">
      <subfield code="0">MAPA20080549305</subfield>
      <subfield code="a">Válvulas</subfield>
    </datafield>
    <datafield tag="700" ind1="1" ind2=" ">
      <subfield code="0">MAPA20080194666</subfield>
      <subfield code="a">Hinds, William C.</subfield>
    </datafield>
    <datafield tag="740" ind1="0" ind2=" ">
      <subfield code="a">American Industrial Hygiene Association journal</subfield>
    </datafield>
    <datafield tag="773" ind1="0" ind2=" ">
      <subfield code="t">American Industrial Hygiene Association journal</subfield>
      <subfield code="d">Akron, Ohio</subfield>
      <subfield code="g">Vol. 51, nº 10, October 1990 ; p. 555-560</subfield>
    </datafield>
  </record>
</collection>