NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 11 to 20 of 612 (0.068 seconds)
11

Quantitative respirator fit testing by negative pressure

Murphy, Richard Wright, 1958- January 1989 (has links)
An automated system for quantitative respirator fit testing by negative pressure was evaluated by comparison testing with a computerized aerosol fit test system (Dynatech Frontier Model 260A). The new negative pressure system measures leakage flow while inspiratory pressures are sustained in a respirator facepiece rather than by pressure decay. Four phases of comparison testing were graduated by level of control, ranging from non-subject tests with hypodermic needle leakages to fit tests of 125 Air Force personnel. Throughout the series of tests, negative pressure fit factors were consistently more conservative than aerosol fit factors and showed less variability. Leakage flow rates measured by the negative pressure instrument were highly correlated with leak needle cross-sectional area as predicted by principles of air-flow physics. Comparison of subject and non-subject generated aerosol fit factors indicated significant aerosol losses, possibly due to streamlining and respiratory tract deposition. Negative pressure fit factors were not affected by these subject-related losses.
Breathing apparatus -- Testing.
12

DEVELOPMENT OF A NEW QUANTITATIVE FIT TEST FOR CHEMICAL CARTRIDGE RESPIRATORS - A FEASIBILITY STUDY (PRESSURE)

Eroh, Martin Patrick, 1962- January 1986 (has links)
No description available.
Breathing apparatus.
Gas masks.
13

Health considerations in house design

Crowther, David R. G. January 1994 (has links)
No description available.
720
Breathing walls
14

Death rattle : an exploration

Wee, Bee Leng January 2003 (has links)
No description available.
616.206
Noisy breathing
15

Studies of the development of the respiratory responses to hypoxia in the neonate

Eden, G. J. January 1987 (has links)
No description available.
612
Breathing response in newborn
16

An experimental and theoretical study of scavenging in two-stroke cycle engines

Smyth, J. Gary January 1991 (has links)
No description available.
621.4
Air-breathing engines
17

Breathing in frogs : The mechanism of ventilation and gas exchange in Rana pipiens

Vitalis, T. Z. January 1988 (has links)
No description available.
611
Frogs' breathing mechanism
18

Some factors affecting respiration in man

Painter, R. January 1987 (has links)
No description available.
612
Breathing patterns in man
19

Some aspects of the regulation of respiration in man

Pilsbury, David John January 1987 (has links)
No description available.
612
Human breathing patterns
20

Non-invasive measurement of breathing patterns using the respiratory inductive plethysmograph

Stewart, Isaiah Casey January 1986 (has links)
No description available.
610
Asthmatic breathing patterns

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