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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.
1

Effects of posture and water immersion on diaphragmatic function /

Hashimoto, Akio. January 1984 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 217-237).
2

The function of the human diaphragm as a volume pump and measurement of its efficiency /

Singh, Bhajan. January 2003 (has links)
Thesis (Ph.D.)--University of Western Australia, 2004.
3

Studies on ventilatory function in chronic neuromuscular disorders /

Weinberg, Jan, January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst. / Härtill 5 uppsatser.
4

Evaluation of Diaphragmatic Dysfunction in Dogs with Cervical Spinal Disorders before and after Surgery using Fluoroscopy, M-mode Ultrasound and Radiography

Pearson, Brandy Lee 04 May 2018 (has links)
Respiratory complications in dogs with cervical myelopathies can be life-threatening and are attributed to spinal cord morbidity secondary to cervical disease or decompressive surgery causing diaphragmatic dysfunction. However, diaphragmatic dysfunction in these dogs has not been described. Thirtyive client-owned dogs were recruited with 14 control and 21 test dogs. Dogs were evaluated for the presence of diaphragmatic dysfunction using radiography, M-mode ultrasonography, and fluoroscopy (gold standard) before and after an anesthetic or surgical event. Diaphragmatic dysfunction was observed more frequently in dogs with cervical disease prior to surgery (8/21 dogs, 38.1%) compared to control dogs (3/14 dogs, 21.4%) but was not statistically significant (odds ratio, 2.3; 95% confidence interval, 0.48-10.6; P = 0.30). Further, the frequency of diaphragmatic dysfunction did not significantly increase following surgical decompression in either group. Thus, dogs in this study with cervical disease and undergoing decompressive surgery were not considered to have a higher probability of diaphragmatic dysfunction compared to the control dogs.
5

Horizontal Stiffness of Wood Diaphragms

Bott, James Wescott 19 May 2005 (has links)
An experimental investigation was conducted to study the stiffness of wood diaphragms. Currently there is no method to calculate wood diaphragm stiffness that can reliably account for all of the various framing configurations. Diaphragm stiffness is important in the design of wood framed structures to calculate the predicted deflection and thereby determine if a diaphragm may be classified as rigid or flexible. This classification controls the method by which load is transferred from the diaphragm to the supporting structure below. Multiple nondestructive experimental tests were performed on six full-scale wood diaphragms of varying sizes, aspect ratios, and load-orientations. Each test of each specimen involved a different combination of construction parameters. The construction parameters investigated were blocking, foam adhesive, presence of designated chord members, corner and center sheathing openings, and presence of walls on top of the diaphragm. The experimental results are analyzed and compared in terms of equivalent viscous damping, global stiffness, shear stiffness, and flexural stiffness in order to evaluate the characteristics of each construction parameter and combinations thereof. Recommendations are presented at the end of this study as to the next steps toward development of an empirical method for calculating wood diaphragm stiffness. / Master of Science
6

Analytical Development of Capacity Design Factors for a Precast Concrete Diaphragm Seismic Design Methodology

Wan, Ge January 2007 (has links)
The primary objective of the dissertation work is to examine the capacity of precast concrete diaphragms. This work is part of a multi-university research effort to develop a new seismic design methodology for precast/prestressed concrete floor diaphragms. To accomplish this, two-dimensional finite element (FE) models of precast floor diaphragms are created, including new elements to match the response of reinforcing details under combined forces. Using these models, nonlinear static "pushover" analyses are performed by applying body forces in the plane of the floor.The analyses are composed of three major parts:(1) Parametric studies to determine the required diaphragm shear strength relative to design (flexural) strength, termed "shear reinforcement overstrength", to promote a ductile mechanism in precast diaphragms. The performance of precast diaphragms with different shear reinforcement overstrength is examined. Appropriate shear reinforcement overstrength design factors are proposed to produce certain performance targets, in terms of a number of key parameters related to diaphragm geometry and the properties of the diaphragm reinforcing details.(2) Parametric studies to examine the effects of "secondary" diaphragm elements (spandrels, internal beams) on precast diaphragm behavior. Though not directly counted in design to participate diaphragm action, the secondary elements and their connections to the main diaphragm may modify the strength, stiffness and deformation capacity of the diaphragm. Analytical studies are performed to examine their effect on the global characteristics and local demands of precast floor diaphragms. The parameters evaluated include the characteristics of the connection details, the seismic hazard level used in design, diaphragm geometry, and layouts of spandrels and internal beams.(3) Development of a rational method for calculating the service stiffness and yield strength of precast concrete diaphragms. The method involves input of diaphragm geometry and reinforcing details. The method is verified analytically through comparisons to a set of FE analyses for an idealized diaphragm representation (regular single span diaphragm idealized with simple end supports). The method verified for a single set of diaphragm reinforcement details is used to estimate the properties over a range of untopped and topped diaphragm systems. Consideration of spandrel and internal beams in the method is discussed.
7

An investigation into the effect of breathing exercises on diaphragm movement and regional distribution of ventilation /

Hardy, Frances. Unknown Date (has links)
Thesis (MApSc(Physiotherapy)-Research)--University of South Australia, 2003.
8

Sonographic measurement of diaphragmatic motion after upper abdominal surgery :

Blaney, Frances Unknown Date (has links)
Thesis (MAppSc, in Physiotherapy) -- University of South Australia, 1994
9

Sonographic measurement of diaphragmatic motion after upper abdominal surgery :

Blaney, Frances Unknown Date (has links)
Thesis (MAppSc, in Physiotherapy) -- University of South Australia, 1994
10

Studies of diaphragm fatigue and dysfunction /

Radell, Peter J., January 1900 (has links)
Diss. (sammanfattning) Stockholm : Karol. inst., 2001. / Härtill 5 uppsatser.

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