Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 189-210).

The scope for this project will be to explore, define and satisfy the current need for protection devices against air pollution. The outline for the project will be to explore the matter from an entrepreneurial perspective where the lev­el of feasibility will be of great importance. Cost efficiency, branding and market are all important factors that should align with the product design process and outcome.

Title page, table of contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / Assessment of gastric emptying in animals is hampered by the lack of a technique that is noninvasive and does not involve sacrificing the animal. The primary aims of these studies therefore were to develop the breath test for the mouse and then investigate gastric emptying rates in physiological, pathological and pharmacological studies. After an overnight fast, mice were fed a solid or liquid meal that contained a ¹³C-labelled substrate, and placed in breath collection chambers. Breath samples collected at intervals were analysed for levels of ¹³C0₂, with the rate of appearance in the breath giving a measure of the gastric emptying rate. The breath testing technique was shown to be reproducible and sensitive enough to be able to detect induced alterations to gastric emptying, with results comparable to those obtained from other techniques. The breath test was used to assess gastric emptying in mice and showed that: (1) H. pylori infection accelerated gastric emptying in the initial weeks of infection, whilst a more severe stomach inflammation caused dysmotility; (2) baclofen (a potential reflux therapy) accelerated gastric emptying of solids and delayed liquid emptying in a dosedependent manner; and (3) mice with a high daily food intake had faster emptying compared to those with low intake, which resulted in the same weight gain of the two groups. Breath testing was also used in adults and children and showed that: (1) increasing the caloric content of a solid meal delayed the emptying of the solid, but not of a liquid given simultaneously; (2) gastric emptying rate is correlated to the amount of colonic gas produced; and (3) improvement in pancreatic lipase activity with pancreatic enzyme replacement is inversely related to the gastric emptying time. Breath testing was also used to show that substrates with a natural ¹³C-enrichment can be used to assess small intestinal enzyme activity. Breath testing is a sensitive and reproducible tool to investigate gastric emptying in mice. Its noninvasive nature allows it to be repeated within each subject which is useful for follow-up investigations. It can now be applied further to a range of disease, pharmacological and nutritional investigations. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1082934 / Thesis (Ph.D.) -- University of Adelaide, Dept. of Physiology, 2002

Title page, table of contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / Assessment of gastric emptying in animals is hampered by the lack of a technique that is noninvasive and does not involve sacrificing the animal. The primary aims of these studies therefore were to develop the breath test for the mouse and then investigate gastric emptying rates in physiological, pathological and pharmacological studies. After an overnight fast, mice were fed a solid or liquid meal that contained a ¹³C-labelled substrate, and placed in breath collection chambers. Breath samples collected at intervals were analysed for levels of ¹³C0₂, with the rate of appearance in the breath giving a measure of the gastric emptying rate. The breath testing technique was shown to be reproducible and sensitive enough to be able to detect induced alterations to gastric emptying, with results comparable to those obtained from other techniques. The breath test was used to assess gastric emptying in mice and showed that: (1) H. pylori infection accelerated gastric emptying in the initial weeks of infection, whilst a more severe stomach inflammation caused dysmotility; (2) baclofen (a potential reflux therapy) accelerated gastric emptying of solids and delayed liquid emptying in a dosedependent manner; and (3) mice with a high daily food intake had faster emptying compared to those with low intake, which resulted in the same weight gain of the two groups. Breath testing was also used in adults and children and showed that: (1) increasing the caloric content of a solid meal delayed the emptying of the solid, but not of a liquid given simultaneously; (2) gastric emptying rate is correlated to the amount of colonic gas produced; and (3) improvement in pancreatic lipase activity with pancreatic enzyme replacement is inversely related to the gastric emptying time. Breath testing was also used to show that substrates with a natural ¹³C-enrichment can be used to assess small intestinal enzyme activity. Breath testing is a sensitive and reproducible tool to investigate gastric emptying in mice. Its noninvasive nature allows it to be repeated within each subject which is useful for follow-up investigations. It can now be applied further to a range of disease, pharmacological and nutritional investigations. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1082934 / Thesis (Ph.D.) -- University of Adelaide, Dept. of Physiology, 2002

Title page, table of contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library. / Assessment of gastric emptying in animals is hampered by the lack of a technique that is noninvasive and does not involve sacrificing the animal. The primary aims of these studies therefore were to develop the breath test for the mouse and then investigate gastric emptying rates in physiological, pathological and pharmacological studies. After an overnight fast, mice were fed a solid or liquid meal that contained a ¹³C-labelled substrate, and placed in breath collection chambers. Breath samples collected at intervals were analysed for levels of ¹³C0₂, with the rate of appearance in the breath giving a measure of the gastric emptying rate. The breath testing technique was shown to be reproducible and sensitive enough to be able to detect induced alterations to gastric emptying, with results comparable to those obtained from other techniques. The breath test was used to assess gastric emptying in mice and showed that: (1) H. pylori infection accelerated gastric emptying in the initial weeks of infection, whilst a more severe stomach inflammation caused dysmotility; (2) baclofen (a potential reflux therapy) accelerated gastric emptying of solids and delayed liquid emptying in a dosedependent manner; and (3) mice with a high daily food intake had faster emptying compared to those with low intake, which resulted in the same weight gain of the two groups. Breath testing was also used in adults and children and showed that: (1) increasing the caloric content of a solid meal delayed the emptying of the solid, but not of a liquid given simultaneously; (2) gastric emptying rate is correlated to the amount of colonic gas produced; and (3) improvement in pancreatic lipase activity with pancreatic enzyme replacement is inversely related to the gastric emptying time. Breath testing was also used to show that substrates with a natural ¹³C-enrichment can be used to assess small intestinal enzyme activity. Breath testing is a sensitive and reproducible tool to investigate gastric emptying in mice. Its noninvasive nature allows it to be repeated within each subject which is useful for follow-up investigations. It can now be applied further to a range of disease, pharmacological and nutritional investigations. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1082934 / Thesis (Ph.D.) -- University of Adelaide, Dept. of Physiology, 2002

Thesis (doctoral)--Bayerische Ludwig-Maximilians-Universität, Munich, 1933.

Thesis (doctoral)--Bayerische Ludwig-Maximilians-Universität, Munich, 1933.

Thesis (Ph. D.)--Johns Hopkins university, 1901. / Vita.

Dissertation submitted in partial compliance with the requirements for the Master's Degree in Technology: Homoeopathy, Technikon Natal, 1999. / The purpose of this placebo-controlled study was to evaluate the efficacy of the homoeopathic simillimum treatment in halitosis in terms of the volatile sulphur compounds being measured objectively by the portable sulphide monitor and subjectively by organoleptic measurement\x87 / M

The concept of communication via breath is introduced under the molecular com munication system, where data can be exchanged through inhalation and exhalation. Those data are carried by volatile organic compounds (VOCs) or pathogens and transferred through an aerosol channel. In this thesis, we propose a molecular com munication model for an instantaneous source in a bounded indoor environment. The walls of this environment could be reflectors and/or absorbers by adjusting the value of deposition velocity. We assume a puff source in a given location and study the per formance of a point source since it is the basic element that can be used to derive the concentration of breath, cough, and sneezing, where the concentration of continuous source can be found by integrating a point source over space and time domains. Also, we show some numerical results to visualize the performance of these mathematical models and evaluate them. As a case study, we consider a real-life scenario of detecting a virus from an exhaled breath of a person standing in an indoor bounded room with reflective and absorptive walls. We derive the spatial-temporal concentration of an exhaled virus at the molecules source and the receiver in the room. Finally, we study the probability of misdetection using a suitable bio-sensor.