Global ETD Search
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 110 for “"Respiratory System"”.
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The Exercising Respiratory System
… Whilst the potential capacity of the respiratory system has been described as being 'over-built' for exercise, a number of respiratory system functions have been linked with exercise limitation, in both trained and untrained individuals. The purpose of this research was to examine the …
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Acoustic transmission in the respiratory system
Thesis (Ph. D.)--Harvard University--Massachusetts Institute of Technology MIT Division of Health Sciences and Technology, Program in Medical Engineering and Medical Physics, 1989.
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Fractional order models of the human respiratory system
… domain, due to its simplicity. The dynamical systems whose model can be approximated in a natural way using FO terms, exhibit specific features, such as viscoelasticity, diffusion and a fractal structure; hence the respiratory system is an ideal application for FO models. Although viscoelastic …
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Microfluidic Flow Creation in the Insect Respiratory System
… and diffusive flows are created in the insect respiratory system, using a combination of direct biological studies and computational fluid dynamics simulations. The insect respiratory system differs significantly from the vertebrate respiratory system. While mammals use oxygen-carrying …
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Lower respiratory system disease (LRSD) diagnosis using fuzzy inference system
Lower Respiratory System Diseases (LRSD) are one of the most deathcausing diseases in the world. In a large number of cases, people stay unaware of their body reactions and symptoms as they begin with a cold, cough, and fever. These symptoms on later stages lead to cause Chronic Obstructive …
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Analytical and Experimental Investigation of Insect Respiratory System Inspired Microfluidics
… contrast, actively and efficiently handle their respiratory air flows in complex networks consisting of thousands of microscale tracheal pathways. This work analytically and experimentally investigates the viability of incorporating some of the essential kinematics and actuation strategies of …
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An improved digital computer model of the neonatal respiratory system
… improved digital computer model of the neonatal respiratory system was developed. Using previous models as a basis, important improvements were made in order to accurately simulate infant blood gas chemistry and its effect on respiratory and circulatory control. The model is divided into five …
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Expression and function of serotonin receptor isoforms in the respiratory system
… um deren Verteilung im respiratorischen System zu untersuchen. Es konnte gezeigt werden, daß alle Rezeptoren im sog. PreBötzinger Komplex (PBC), der essentiell für die Rhythmogenese ist, exprimiert werden. Immunhisto-chemische und Einzelzell RT-PCR Analysen zeigten, daß die 5-HT4(a) und …
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The mechanical linkage of abdominal movements and the respiratory system in beetles
… in insects, thought to function largely in respiratory processes. In particular, the abdominal pump is considered to produce ventilation of air in the tracheal system, but the mechanistic link between abdominal movement and flow of air is not well understood. In this thesis, we explore the …
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Responses of respiratory system cells in vitro and in vivo to petrochemical combustion-derived ultrafine particles
… adsorbed organic constituents directly to target respiratory cells, without uptake of the particles by the cells. Next, we demonstrate that combustion-derived PAHs adsorbed onto BDS particles are concentrated in lipid droplets of respiratory system cells and that, in vitro, these PAHs activate …
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THE EFFECT OF INDOOR TOTAL SUSPENDED PARTICLES (TSP) ON THE HUMAN UPPER RESPIRATORY SYSTEM: FROM THE MICROBIOME TO HERV METHYLATION
… because of its effect on the cardiovascular and respiratory system. Almost the entire global population is exposed daily to an unhealthy level of these contaminants and most of the exposure comes from the indoor setting where we spend a large portion of our daily time. The link between …
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Kineziterapijos užsiėmimų, naudojant Schumann 3D plokštę, poveikis asmenų, sergančių pneumonija, kvėpavimo funkcijos būklei /
… the vibrating platforms, on the change in the respiratory system function in people suffering from pneumonia. Aim of the research: To evaluate the effect of physiotherapy, using the Schumann 3D platte, on the respiratory system condition in people suffering from pneumonia. The research involved …
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Sveikų rūkančių studentų fizinio aktyvumo, širdies kraujagyslių ir kvėpavimo sistemų funkcijų sąsajos /
… Keywords: physical activity, cardiovascular system, respiratory system, smoking, students. The aim of research work: determining the correlation between physical activity (PA), cardiovascular, respiratory systems functions of healthy smoking students. Tasks of work: 1. Evaluating the PA of …
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The role of the abdominal pump in tracheal tube collapse in the darkling beetle, Zophobas morio
… across groups of insects). In some insects respiratory patterns have been correlated with abdominal movements, although the specific mechanical effects of these movements on the animal\'s respiratory system are generally unknown. Conversely, some insects (such as beetles, ants, and crickets) …
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Neural adaptive mechanisms in respiratory regulation : theory and experiments
The respiratory regulatory system is an example of a complex biological control system. The principle goal of the regulator is to preserve the chemical balance of 02, CO2 and pH in the body. Although much is known about the visceral aspects of the respiratory control system, such as lung anatomy, …
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An analytical and experimental investigation of respiratory dynamics using P/D control and carbon dioxide feedback
… identified as possibly having an input to the respiratory controller. These seven represent a combination of feedforward and feedback inputs arising from neural and humoral mechanisms. Using the assumption that carbon dioxide concentrations in the arterial blood have the strongest effect, a …
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Material Characterization of Insect Tracheal Tubes
The insect respiratory system serves as a model for both robust microfluidic transport and mate- rial design. In the system, the convective flow of gas is driven through local deformations of the tracheal network, a phenomenon that is dependent on the unique structure and material properties of the …
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Application of microperforated elements in axial fan noise control and silencer design
… environments because it is less harmful to human respiratory system than traditional sound absorbing materials, meaning more hygienic. Therefore in this study, microperforated panels were used in fan noise control and in acoustic silencers, where both of the devices are easily accessible by humans.
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