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 32 for “"physical stress"”.
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The effect of chlorine, heat and physical stress on entrained plankton at Koeberg Nuclear Power Station
… which are exposed to heat, chlorine and physical stress during their passage through the system. Phytoplankton biomass, measured as chlorophyll a, was reduced by an average of 55.32% due to entrainment, and productivity was decreased by 38.30% on average, mainly due to chlorination. …
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Early life immune and physical stress directly influences anxiety-like behaviour in adolescent rats: examining sex differences
… behaviour in rats before and after a stress period. Previous research has shown that adults rats exposed to LPS during the neonatal stage show anxiety-like behaviour following a period of stress. This thesis investigated this effect in adolescence. The present results showed …
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Influence of Physical Stress, Sex, and Body Size on Metabolic Rates of Ozark Zigzag Salamanders, Plethodon Angusticlavius
… angusticlavius) are exposed to a variety of stressors, each eliciting a combination of behavioral and physiological responses. One response is an increase in oxygen consumption rate. Individuals were physically stressed to simulate a predatory attack, and oxygen consumption was measured …
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Detection of human salivary α-Defensins by LC-ESI-MS and evaluation of levels in athletes after physical stress
… human neutrophil alpha defensins (HNP1-4) after physical stress. A method for the analysis of individual (HNP1-4) in a saliva matrix by LC-ESI-MS has been established. An Agilent 1200 series HPLC, coupled with a Synapt G1 (Q-TOF-ESI-MS), was used for the separation and detection of HNP1-4. The …
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Effect of a physical training program involving psycho-physical stress upon the anxiety and self-concepts of male military college students
… consists of various activities involving physical and psychological stress, that have been modeled after activities contained in Outward Bound and various military programs. Sixty-eight male first-year cadets at the Virginia Military Institute were randomly assigned to one of five …
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Autogenic regulation training (ART), sickness absence, personal problems, time and the emotional-physical stress of student nurses in general training : a report of a longitudinal field investigation
… personal problems, time and their emotional physical experience was evaluated. Measures used in the study included:The Sickness Absence Record (SAR)The Mooney Problem Checklist (MPC)The Crown-Crisp Experiential Index (CCEI)and The Personal Observations Inventory (POI)Data was collected at …
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Motor Learning Effects of Two Types of Stressors: Implications for Practice Specificity
Various types of stress have been found to have both positive and negative effects on motor performance (Szalma & Hancock, 2011; Van Gemmert & Van Galen, 1997). One potential explanation for these diverse findings is that stress increases the amount of neuromotor noise in the system (Van Gemmert, …
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Design and construction of a human powered vehicle seating simulator for diagnostic testing
… power output. The simulator measures a rider's physical stress required to produce a certain power output. A heart rate monitor is used to find the rider's physical stress level. The theory is that the best shaped seat will allow the rider to pedal most efficiently. The seat of the simulator can …
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Absorbed power as a measure of whole body vehicular vibration exposure
… is considered as a potential indicator of the physical stress affecting human health. The amount of vibration energy, either absorbed or exchanged between the source and body, may be a good measure of the physical stress on the body since it takes into consideration the interaction between the …
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Assessing Trailer Material Handling Tasks: Biomechanical Modeling, Posture Categorization, Physiological Measure, and Subjective Rating
… designs used in trailer MMH place the least physical stress on the human operator when unloading materials. Each trailer MMH design was evaluated by the criteria of biomechanical loading, working posture, physiological measure, and subjective rating of exertion. These four methods were used …
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An analysis of the cellular and humoral immune responses of Galleria mellonella larvae
… age. G.mellonella larvae exposed to thermal and physical stress demonstrated increased survival to a lethal dose of Aspergillus fumigatus or Staphylococcus aureus when compared to control larvae. The thermal and physical stress induced an immune priming effect on larvae which coincided with an …
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Vertical zonation of three species of California limpets (Acmaeidae) as a function of predation
… region are thought to be limited from above by physical stress and from below by predation or competition (Connell 1970; Dayton 1971; Vermeij 1972; Paine 1974; Bertness 1977). The purpose of the present study was to investigate effects of the predators Pisaster ochraceus, Cancer antennarius and …
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Salivary VIP concentrations are elevated in humans after acute stress
… two salivary neuropeptides in the context of the stress response. The research was focused first and foremost on evaluating the usefulness of salivary Neuropeptide Y (NPY) and salivary vasoactive intestinal peptide (VIP) as stress indicators. Secondly, we questioned whether these markers help us …
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Ultrasonic Continuous Wave Spirometer
… performing spirographic measurements under physical stress situations. Existing systems, which use mechanical structures in the measurement process, have response times that are too slow, or are too bulky to be considered portable.</p><p>The proposed system solves these problems and has a …
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Adversity in early adolescence alters female rats' anxiety-related behaviours and serotonergic innervation profiles in adulthood
Stress during early development produces lasting effects on psychopathological outcomes. The impact of prior intermittent, physical stress (IPS) during early-adolescence (PD 22-33) on anxiety-related behaviour of female rats was analyzed in adulthood. After behavioural testing, serotonergic …
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College students and grit: The lived experience of well-being and retention
… presence of a trusted mentor, the preference for physical stress over emotional stress, motivation identified in external influences, a decline in mental well-being during extreme stress, and an increase in gratitude during times of extreme stress. Based on the students’ self-described experiences …
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An archaeological, anthropological study of the human skeletal remains from the Oakhurst Rockshelter, George, Cape Province, Southern Africa
… graded response to nutritional and physiological stress in human bone. It is argued that agriculturalists and transitional agro/pastoralists are more stressed than the hunter gatherers who preceded t hem. This is evinced by mortality profiles, mean age at death and the number and extent of …
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Differentiation between the Effects of Physical and Psychosocial Stress on a Feedback-based Learning Task
… This learning process is influenced by acute stress. However, different laboratory stressors elicit different physiological response patterns, which may influence feedback processing differently. Moreover, individual differences in stress reactivity may be associated with reward sensitivity. …
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Stress and the feminine self-concept: responses to feminine and gender-neutral stressors as a function of feminine self-evaluation
Vulnerability to Feminine Gender Role Stress (FGRS), defined as the tendency to evaluate the self along feminine dimensions, was introduced as a psychosocial mediator between environmental stressors and maladaptive outcomes to explain the higher rate of particular mental health problems among women …
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Novel Multifunctional Laser Diagnostics
… to the response of the subjects to emotional and physical stress. The results uncover myogenic rhythm synchronisation as a potential marker of adaptive response. The complexity of monitoring and interpreting key biomarkers of metabolism, NADH and FAD and the derived redox ratio is addressed in …
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