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 21 for “"alpha activity"”.
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Novel Proteases That Regulate Interleukin-1 Alpha Activity During Inflammation And Senescence
Interleukin-1 alpha (IL-1a) is a powerful inflammatory cytokine that modulates both innate and adaptive immunity. As such, IL-1a is implicated in the development of multiple inflammatory and autoimmune diseases including atherosclerosis, arthritis and cancer. Therefore, understanding the mechanisms …
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Human Estrogen Receptor(alpha) Activity on Estrogen Responsive, Integrated Chloramphenicol Acetyltransferase (Cat) Reporter Constructs in Chinese Hamster Ovary (Cho) Cells
… promoter. In transient transfections hER$\alpha$ regulated transcription of the three 2ERETKCAT cell lines. We found that an ER mutant containing only AF1 elicited a dose dependent activation of the 2ERETKCAT promoter. This represents the first report of activation of an integrated reporter …
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Natural alpha-radioactivity in bone, liver and blood samples from the various species
… samples from the various species are studied for alpha-radioactive content. The experimental technique used is one of thick source "total" alpha counting with "fast pair" scaling enabling separation of "Thorium" series contribution. A study of the change in count rate over a time period enables …
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Electrophysiological systems underlying human domain-general cognition and selective attention
… slope, and intercept) and oscillatory (theta, alpha, and beta power) components encode task demand and content across three cognitive tasks. Aperiodic broadband power, in particular, shows the strongest decoding performance and cross-task generalisability, highlighting its role in …
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Studies of alpha-radioactivity in the marine environment
This dissertation deals with the alpha-radioactivity in the marine environment around South Africa, and the published literature relating to alpha-emitting nuclides in sea water and in marine organisms is surveyed in Chapter 1. As a first step in the investigation, the total alpha-activity of some …
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The relationship between conditioned alpha rhythm and psychological variables
… to investigate the effect of conditioned alpha rhythm on the psychological variables of locus of control, ego-strength, and anxiety. Hypotheses were proposed which predicted movement along these dimensions in the direction of increased inner-directedness, increased ego-strength, and …
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Development of a separations procedure for plutonium and uranium utilizing branched diglycolamide resin
… uranium in 0.34 bed volumes with 100% of the alpha activity due to U. The separation was also able to collect 94% of the loaded plutonium in 0.64 bed volumes with 99% of the alpha activity due to Pu. The separation gave excellent recovery with 97% of the loaded plutonium and 84% of the loaded …
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The influences of preparation and brain states on the time-course of oculomotor control in visual selection
… time variability, we tested the hypothesis that alpha-oscillations (8-12 Hz) occurring in the prestimulus period may influence performance and saccadic reaction times in a visual search task. Using a similar design, MEG and eye movements were measured concurrently. Results revealed that slow …
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A microanalysis of EMG and EEG changes during the sleep onset period (SOP) : a theoretical investigation with practical applications /
… closely examine the relationship between muscle activity (EMG) and EEG state during the process of falling asleep. Sleep stages during sleep onset (SO) have been generally defined with regards to brain wave activity (Recht schaff en & Kales (1968); and more precisely by Hori, Hayashi, & Morikawa …
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The Effects of Dance on Motor and Non-Motor Functions, and Resting State Electroencephalography in Individuals With Parkinson's Disease and Age-Matched Controls
… showed significant changes in both individual alpha peak frequency (iAPF) and individual alpha peak power (iAPP). CONs showed a global increase in iAPF during eyes open (EO) rsEEG and in iAPP during both eyes closed (EC) and EO conditions. Individuals with PD showed an increase in iAPP …
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Brain Activity in College Students with the Broad Autism Phenotype
<p>Abstract</p> <p>This study examined brain activity in college students with the broad autism phenotype (BAP) while viewing facial expressions. Quantitative Electroencephalogram assessments were conducted in the temporal lobe area in the brains of 38 college students declared as Science, …
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Task-Dependent Oscillatory Brain Activity During Oculomotor Delayed Response Task
… demands during the delay period. Changes in alpha power were used to index cognitive efforts during the delay period. Continuous EEGs from 25 healthy young adults (18-34 years) were recorded using dense electrode array. The data was analyzed by 6-cycle Morlet wavelet decompositions in the …
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Development of techniques for high-resolution spatially-resolved elemental analysis in materials of interest in luminescence dating
… to those derived from SEM-EDX analyses. Alpha autoradiographic techniques using solid state nuclear track detectors (CR-39) were applied initially to map localised differences in surface alpha activity, and were subsequently developed to provide semi-quantitative data about the …
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Temporal Lobe Transients and Prayer
… be used by individuals to induce micro-seizure activity. The theory predicted that an increase in alpha and theta activity in the temporal lobes of the brain would occur when subjects had a religious experience.</p> <p>To test this, male and female Christian college students completed a Prayer …
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Exploring the combined use of electrical and hemodynamic brain activity to investigate brain function
… HbO2 (p = 0.000), more Hbb (p = 0.008), and more alpha activity (p = 0.000) was present compared to eyes open blocks. Furthermore, dynamic cross correlation analysis reproduced a positive correlation between alpha and Hbb (r: 0.457 and 0.337) and a negative correlation between alpha and HbO2 (r: …
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EEG activation patterns in the frontal lobes of stutterers and nonstutterers during working memory tasks
… subsequent motor responses. Behavior and EEG activity of stutterers and non stutterers were compared during working memory tasks. Participants were 22 male, right-handed stutterers, mean age 28.2 years, age matched with 22 male, right-handed nonstutterers. Behavioral measures included a …
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Neuronal Network Oscillations in the Control of Human Movement
… the relationship between cortical oscillatory activity and the control of human movement. Modulations in motor cortical beta and alpha activity have been consistently implicated in the preparation, execution, and termination of movement. Here, I describe the outcome of four studies designed to …
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Investigation of Sleep Neural Dynamics in Intracranial EEG Patients
… purposes, we establish differences observed in alpha band activity between wakefulness and rapid eye movement (REM) sleep in frontal and temporal regions of iEEG patients. Lastly, we implement an automated sleep scoring method relying on the variations in alpha and delta bands power during sleep …
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AMP Deaminase 3 overexpression regulates cellular energetics and signaling for PGC-1α activation.
… undergoing atrophy have decreased [ATP], PGC-1[alpha] expression, and mitochondrial content. This combination of findings is unexpected because decreased [ATP] is often associated with greater [AMP] and subsequent activation of AMPK, a known inducer of PGC-1[alpha] activity and mitochondrial …
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Examining the Transient Neural Dynamics Underlying Working Memory Maintenance for Complex Visual Stimuli
… during the delay period, and how neural activity and connectivity are related to memory is critical for advancing both basic knowledge as well as informing declines in memory and cognition related to neurodegenerative diseases and healthy aging. An open question in the field of WM …
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