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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 331 for “"Ejection"”.
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Particle ejection and suspension due to isotropic turbulence
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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The pathophysiology of heart failure with preserved ejection fraction
Our studies demonstrate that patients with HfpEF have impaired myocardial energetics as indicated by the diminished in vivo myocardial PCr/ATP ratio. Data acquired during semi-supine cycling exercise indicates that patients with HfpEF had a dynamic impairment of LV active relaxation. In addition, …
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Measurement of the pre-ejection period from the esophagus
Thesis. 1976. B.S.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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The Relationship of Stress Indicators to Pre-Ejection Cardiac Intervals
Made available in DSpace on 2014-12-10T18:06:51Z (GMT). No. of bitstreams: 1 6706736.pdf: 7641967 bytes, checksum: 9e05b6f093158176fbe15919f532479c (MD5) Previous issue date: 1966
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Particle ejection system : target particle recovery using a transient water jet
… elements is well advanced, the mechanical ejection or removal of particles is fairly underdeveloped. Agriculture and mining applications have used air jets and water jets to eject particles ranging in weight from a few grams to several hundred. With the current trends in mechanization …
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Modeling viscoelastic responses of the head/neck system during pilot ejection
The effect of added head mass during pilot ejection from an aircraft is currently being studied at the Wright Patterson Air Force Base in Ohio. The Articulated Total Body model, a FORTRAN computer program capable of simulating three-dimensional human body motion using rigid body dynamics, has been …
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Dysphoric Milk Ejection Reflex: A Narrative Inquiry of Women's Experiences and Perceptions
<p>Background </p> <p>Dysphoric milk ejection reflex is an idiopathic condition experienced by some breastfeeding women that is characterized by an abrupt experience of negative emotions or sensation prior to milk let-down. Many women struggle to make sense of the condition, and report barriers to …
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Comparison of estimates of left ventricular ejection fraction using gated blood imagining
Serial measurement of left ventricular ejection fraction (L VEF) using GBP imaging is an established technique for monitoring L VEF in patients undergoing chemotherapy with cardio-toxic medication and in patients after heart transplants. Oncologists at our institution decide that cardio-toxic …
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Exploring the role of Wnt signalling in heart failure with preserved ejection fraction.
… registry, heart failure with preserved ejection fraction (HFpEF) accounts for approximately 16% of heart failure cases, with survival rates failing to improve due to the lack of effective treatments and the increasing prevalence of co-morbidities. It has been widely documented throughout …
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An interactive computer analysis of the aortic ejection click and first heart sound
The aortic ejection click and the first heart sound (S1) are described in the time and frequency domains from computer processed phonocardiogram data obtained from 13 valvar aortic stenosis patients and 6 normal ones. The interactive FOBTRAI program developed was capable of the following: (1) …
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Investigation and analysis of heart failure with preserved ejection fraction (HFpEF) with Magnetic resonance
Heart Failure with preserved Ejection fraction (HFpEF) is a cardiovascular condition which is steadily on the rise. It is a major affliction in the elderly with higher incident rates in females and the obese. Exercise intolerance even to submaximal exercise is the cardinal symptom of this disease. …
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Increasing Isentropic Efficiency with Hydrostatic Head and Venturi Ejection in a Rankine Power Cycle
… head generated by elevation and venturi ejection for use by the condenser is developed along with the equations needed to predict the changes to the system. These equations were used to create software to predict efficiency as well as lay down the foundation for future improvements of the …
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Behavioral characteristics and hormonal mechanisms of egg ejection in the American robin (Turdus migratorius)
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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A Study of the Ejection of Electrons From the Surface of Tungsten by Low Energy Ions
Made available in DSpace on 2015-05-12T17:12:33Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6402945.PDF: 3799538 bytes, checksum: 49a67fb04de25aeefb87acb62c125ab2 (MD5) Previous issue date: 1963
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Chronotropic Incompetence in Patients with Heart Failure and a Preserved Ejection Fraction: Prevalence and Impact on Exercise Tolerance
BACKGROUND: An appropriate heart rate (HR) response to exercise is important, as it represents a key determinant of oxygen consumption (VO2). Furthermore the inability of HR to increase sufficiently, chronotropic incompetence (CI), has important functional and prognostic implications in heart …
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The prevalence, profile, and prognosis of heart failure with preserved ejection fraction: A South African tertiary hospital experience
… is limited data on heart failure with preserved ejection fraction (HFpEF) in Sub-Saharan Africa. We therefore aimed to describe the prevalence, profile and outcomes of HFpEF patients admitted to a South African tertiary hospital. Methods. We retrospectively reviewed all consecutive de novo heart …
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An experimental examination of the influence of trailing-edge coolant ejection on blade losses in transonic turbine cascades
… on transonic turbine blades in the presence of ejection of coolant in the direction of the flow from slots near the trailing edge. I t presents the effect of the trailing edge coolant ejection on the turbine blade aerodynamic efficiency.¹ The objective of this work is to contribute to the design …
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