U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Computer automation of a dry-dust generating system



Details

  • Personal Author:
  • Description:
    A computer controlled system for the automated generation of a dry aerosol in an exposure chamber was developed to minimize variability in aerosol concentration over time. The automated exposure system consisted of a microprocessor controlled stepper motor, a personal computer with analog to digital converter, and a real time aerosol monitor. A computer program was written so that these devices could be used to produce a chamber dust concentration at a level selected. Attempts were made to reduced temporal variation using time series analysis. The mean of the absolute value of the difference between successive measurements was used as an indication of concentration variability for a particular trial. Trials were performed to determine the response of the chamber concentration levels to step changes in generator speed. Typical results for two trials performed to achieve dust concentrations of 10 and 25mg/m3 were presented. Small changes did not coincide well with desired levels, and the data suggested a longer time period necessary to realize the effect of a small speed change on concentration level. The authors conclude that the automated system has potential, although further work is needed to refine inconsistencies. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0895-8378
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Pages in Document:
    95-113
  • Volume:
    6
  • Issue:
    2
  • NIOSHTIC Number:
    nn:00220072
  • Citation:
    Inhal Toxicol 1994 Mar; 6(2):95-113
  • Contact Point Address:
    Civil Engineering University of Vermont RM 226 Votey Bldg Burlington, VT 05405
  • Federal Fiscal Year:
    1994
  • Performing Organization:
    University of Vermont & St Agric College, Burlington, Vermont
  • Peer Reviewed:
    True
  • Start Date:
    19940401
  • Source Full Name:
    Inhalation Toxicology
  • End Date:
    19960331
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:349ae83ba7b4c14beac94ebec696df4cd14b09235c422aa4e91857bfd6a7a9140796308a4b35d17c19f0e80d10e5c2b03fb0d0708e43640ee4dbedcfaf933047
  • Download URL:
  • File Type:
    Filetype[PDF - 1.12 MB ]
PREVIOUS
ON THIS PAGE
Details
CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.

As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP