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 20 for “"Cardiac activity"”.
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Evaluation of the diving reflex in response to water-based foam vs. carbon dioxide gas depopulation in White Pekin ducks
… motion cessation, brain death, altered terminal cardiac activity, duration of bradycardia, and onset of bradycardia to onset of unconsciousness between foam and CO2 gas for ducks aged 5-9 weeks. Experiment 2 evaluated the effects of non-terminal submersion in both flowing and standing water and …
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Source characterization using linear transformations of multichannel biomagnetic recordings
… MCG offers accurate recordings of the fetal cardiac activity that allow to examine the effects of different maternal factors (such as smoking, exercise, fatty-acids diet supplements) on the fetal neurophysiological development using measures of heart rate and heart rate variability, and …
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A Study on High-Speed Magnetic Induction Tomography Instrumentation Aiming at Low Conductivity Applications
… flow in oil pipes and the detection of the cardiac activity and the lung activity were targeted.A thorough investigation for the specifications, the design and the development of the required MIT instrumentation was performed. Two low cost MIT systems operating at 10 MHz based on the zero …
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Video-analysis inference automated ECG (VID-ECG): improving video-based heart rate detection and exposing security risks of ECG-based biometric authentication
… we show how compo- nents of information on cardiac activity, heart rate and beat-to-beat heart pulse information can be extracted easily using our video-based non-contact method and expose the vulnerability of such biometric security protocols. We propose a novel method called Video-analysis …
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Proactive and Reactive Aggression, Respiratory Sinus Arrhythmia, and Sleep in Adolescents
… emotion regulation and parasympathetic-mediated cardiac activity, was mediating the relationship between sleep and aggression among a sample of adolescents. The results of the study revealed that although sleep problems were positively associated with both types of aggression, no significant …
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Cognitive functioning, cardiovascular activity, and state affect in men with and without a parental history of hypertension
… group differences in resting cardiovascular activity and cardiovascular reactivity during testing. However, cardiovascular activity at rest, and to a lesser degree, cardiovascular reactivity during testing were related to test performance for the entire sample. More specifically, decreased …
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Effects of cardiac gating on fMRI of the human auditory system
… reduces image signal variability associated with cardiac-related brainstem motion. The method, cardiac gating, synchronizes image acquisition to a constant phase of the cardiac cycle. Since that study, several improvements to auditory fMRI have been made, and it is unclear whether cardiac gating …
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Konservatyvi ektopinio kiaušintakinio nėštumo priežiūra. Mokslinės literatūros apžvalga /
… and absence of hemodynamic instability or fetal cardiac activity. The success of expectant management depends on initial beta-human chorionic gonadotropin and its early tendencies. Close monitoring of beta-human chorionic gonadotropin levels until they normalize is essential during conservative …
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The Role of Social Support and Stress Appraisals in the Relationship between Interpersonal Problems and Emotional Reactivity in Young Women with Histories of Childhood Maltreatment
… that attenuate negatively-valenced emotional reactivity. As a result of interpersonal problems, however, some individuals might interpret current relationships more negatively and expect little support in the future. Young women (ages ranging from 18 to 23) with histories of child maltreatment …
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Derivation of the respiratory rate signal from a single lead ECG
… respiration information can be derived from cardiac activity, and second this effect offers the potential of removing the respiration effect that suppresses cardiac information which is of clinical significance. As a result of research performed at NJIT, there is a significant amount of data …
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Standardisation and automatisation of the diagnosis of patients with disorders of consciousness: a machine learning approach applied to electrophysiological brain and body signals.
… of consciousness-mediated modulations of cardiac activity. Our results exceed the current state of knowledge in two dimensions. Clinically, we found that the method can be used in heterogeneous contexts, confirming the utility of machine learning as an automated tool for clinical …
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Personality resources and stress reactivity : potential mechanisms in stress-related psychopathology
… in stress-related patterns of mood change, cardiac activity, and selective attention. Cognitive adaptiveness to stress was defined by a profile of five personality traits: locus of control, self-efficacy, self-esteem, optimism, and anxiety. The sample consisted of 38 normally functioning …
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An analysis of the Afrikaans telephonic descriptors of cardiac arrest in a Western Cape Emergency Control centre
Introduction: Out of Hospital Cardiac Arrest (OHCA) is a time-sensitive emergency which requires prompt identification and emergency care in order to reduce morbidity and mortality. The first step in recognising OHCA is rapid identification by the emergency dispatch centre. Identification of such …
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An analysis of the isiXhosa telephonic descriptors of cardiac arrest (ca) in a Western Cape emergency control centre
Introduction: Out-of-hospital cardiac Arrest (OHCA) represents a considerable public health challenge, characterised by its critical time sensitivity, high morbidity, and poor survival rates. Despite decades of low survival rates, OHCA survival has been a constant concern for healthcare systems …
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Hijacking Cancer Signaling: First-in-class JPRK-targeting Ligands for Fibrolamellar Hepatocellular Carcinoma
… significantly, PKA, whose function regulates cardiac activity. In silico screening of the predicted binding of 10,000 fragments to an allosteric site on JPRK was used to advance 51 fragments for in vitro for potency and selectivity and led to a hit compound. A subsequent Structure Activity …
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Analyzing autonomic activity in neonatal seizures
… In this thesis, we investigate whether seizure activity is associated with changes in the discharge pattern of the autonomic nervous system, which could be picked up in heart rate (HR) or heart-rate variability (HRV) analysis. More fundamentally, we seek to investigate whether seizures in the …
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Continuous assessment of epileptic seizures with wrist-worn biosensors
… the development of a wearable electrodermal activity (EDA) and accelerometry (ACM) biosensor, and demonstrates its clinical utility in the assessment of epileptic seizures. The first section presents the development of a wrist-worn sensor that can provide comfortable and continuous …
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Bivalve molluscs as environmental monitors and tools for sustainable water management
… used in biosensing, valve movements and cardiac activity, may both be simultaneously measured. With extensive detail and explanation of a sophisticated yet simple, inexpensive, scalable and adaptable set-up, this work encourages and facilitates the widespread implementation of …
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Associations of parental age, socioeconomic status, antral follicle count with assisted reproductive technology treatment outcomes
… transfer surgery but failed to detect fetal cardiac activity through ultrasound prior to 22 complete weeks of gestation. Preterm is defined as babies born alive before 37 weeks of pregnancy are completed. Multivariable logistic regression models were used for data analysis, and the …
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Growth and chemical functionalization of SiC nanowires for biomedical applications in cardiology and oncology
… these diseases is still long, and cancer and cardiac diseases remain a serious socio-economic problem for our society. For this reason, this PhD research focuses on these two main topics; called in the thesis the oncology project and the cardiology project. Both projects were devoted to the …