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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 106 for “"Pacemaker"”.
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Adolescent sleep and the circadian pacemaker
… delay and its relationship to the circadian pacemaker, the body’s master clock. Using a dynamic circadian pacemaker model, we identify parameters that affect features of the circadian system that may contribute to the phase delay. Specifically, we focus on the effect of light on the phase and …
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Telephonic transmission of artificial pacemaker parameters.
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1972
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The Pacemaker Function of the Small Intestine
… evidence is presented to suggest that a duodenal pacemaker controls the normal frequency of contractions in the jejunum and in the ileum. The effects of hot and cold water, applied above or below the level of the fistula, on the frequency of contractions recorded at various levels were studied. …
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Cell Signaling Components of the Drosophila Circadian Pacemaker
… and are required in a specific set of pacemaker cells in the Drosophila brain for locomotor rhythms. These cells are divided into distinct subgroups and evidence suggests that subgroups of pacemaker cells may control distinct components of circadian behavior although these assignments …
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Nanostructure materials based supercapattery for next generation pacemaker
… delivery, and biosensors. The artificial cardiac pacemaker, as one of the most important implantable medical devices, is used to stimulate the heart with electrical impulses in order to regulate heartbeats. Conventional rechargeable batteries are very expensive with limited cycle life and cannot …
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Advanced intelligent control and optimization for cardiac pacemaker systems
… and effective treatment via advanced cardiac pacemaker systems have become very important. Intelligent control and optimization of the pacemakers are significant research subjects. Serious but infrequently occurring arrhythmias are difficult to diagnose. The use of electrocardiogram (ECG) …
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Numerical and Experimental Study of Pacemaker Safety under MRI
Pacemaker safety issues with MRI (Magnetic Resonance Imaging) are discussed in this thesis. In order to analyze the electromagnetic compatibility issue of pacemaker/defibrillator with MRI RF (radio frequency) coil and human body model, novel techniques for the evaluation of MRI-induced heating or …
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Epicardial Wireless Pacemaker for Improved Left Ventricular Resynchronization (Conceptual Design)
… are highly desirable. The epicardial satellite pacemaker, or EPI pacemaker, is a component of a larger CRT system. This implantable cardiac system is composed of a master pacing unit with leads and a remote satellite pacing unit. The master unit is a traditional CRT device electrically coupled …
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Regulation of the suprachiasmatic circadian pacemaker by serotonin and neuropeptide Y in vitro
Made available in DSpace on 2011-05-07T14:27:17Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9543662.pdf: 4374167 bytes, checksum: 07d9da4452632e2043ead8592edaf5e2 (MD5) Previous issue date: 1995
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Molecular Dissection of Hand2 During the Formation of Pacemaker-Like Myocytes During Direct Reprogramming
Pages v-vi are misnumbered as pages vii-viii.
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Investigation of the SCN 2.2 Cell Line as a Model of the Central Mammalian Circadian Pacemaker
… SCN, which is the central mammalian circadian pacemaker. Extensive characterization of differentiated SCN 2.2 cultures revealed that this cell line expresses putative clock genes, as well as components of daytime, nighttime and crepuscular circadian regulatory pathways. The line also expresses …
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Windows in the clock: An in vitro study of melatonin action and signal transduction in the suprachiasmatic circadian pacemaker
… the functioning of this primary circadian pacemaker. By isolating the rat SCN in vitro in a hypothalamic brain slice preparation, we have demonstrated a direct resetting of the SCN pacemaker's rhythm of ensemble neuronal firing rate in response to exogenous melatonin treatment. This effect …
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Pacientų fizinės ir psichoemocinės būklės sąsajos po elektrokardiostimuliatoriaus implantavimo /
… and Psychoemotional State in Patients After Pacemaker Implantation The Author: student Gabrielė Čepaitė, nursing bachelor program at Vilnius University. Work Leader: doc. Violeta Ožeraitienė, department of Nursing and Fundamentals of Internal Medicine 2016-05-16 Work size: 49 pages. Keywords: …
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Keeping Pace with Interstitial Cells of Cajal: Modelling Gastrointestinal Electrophysiology
… activity called slow waves, which originates in pacemaker cells called interstitial cells of Cajal (ICC) located within the smooth muscle layers of the GI tract. The mechanism by which ICC generate slow waves is a matter of ongoing research, although rhythmic calcium (Ca2+) oscillations are known …
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Using RNA sequencing to identify transcriptomic differences in the renal pelvis
… A specialized population of resident pacemaker cells are required to initiate and maintain peristalsis; however, the precise mechanisms that underlie pacemaker function remain undetermined. By studying gene expression of pacemaker cells, our goal is to gain further insight as to the …
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Cardiac pacemakers in paediatric patients: a qualitative study of patient and parental experience
… study was to explore the experience of having a pacemaker as a child or young person and the experience of their parent in caring for them. Due to lack of research, very little is known about the impact that having a pacemaker has on children and their parents. However, evidence from the adult …
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Patients with Transistor Pacemakers : Their Problems in Adjusting to Daily Living
… problems and needs of patients with artificial pacemakers. The problem was to find out in what ways the pacemaker affected the patients' manner of living and what problems they had had in adjusting to a new way of life.</p> <p>The method of the study was the descriptive survey; an interview …
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Cholinergic regulation of a mammalian circadian clock
… nuclei (SCN), the primary circadian pacemaker in mammals, continue to show a circadian rhythm in neuronal activity in a hypothalamic brain slice. Using this in vitro preparation, we investigated the direct regulation of the SCN circadian pacemaker by cholinergics.
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About face, computergraphic synthesis and manipulation of facial imagery
… thus the project is called , IDENTIDISC. Part I-PACEMAKER describes the production and implementation of the IDENTIDISC system to produce composite faces. Part II-EXPRESSIONMAKER describes animation techniques to add expression and motion to composite faces . Expression sequences are manipulated …
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