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Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
Momitochondrial Dysfunction And Dna Damage Post Exposure To Low Dose Radiation And "Bystander" Factor (S), Sharon Nugent
Momitochondrial Dysfunction And Dna Damage Post Exposure To Low Dose Radiation And "Bystander" Factor (S), Sharon Nugent
Doctoral
The 'bystander effect' describes radiation-like damage in un irradiated cells, either in the vicinity of irradiated cells or exposed to medium from irradiated cells. This study aimed to further characterize the, as yet poorly understood, mitochondrial response to both direct irradiation and bystander factor(s). Human keratinocyte epithelial and Chinese hamster ovarian cells were exposed to either y radiation or bystander factor(s) at doses of 5mOy, O.50y and 50y and examined 4-96 hours later. DNA damage was determined using deletion analysis, single strand conformation polymorphism analysis, long range PCR, semi-quantitative PCR and quantitative real-time PCR. Mitochondrial mass was determined using MitoTrackelM …
An Investigation Of The Diets Of Infants Born In Ireland During The First Six Months Of Life, Roslyn Tarrant
An Investigation Of The Diets Of Infants Born In Ireland During The First Six Months Of Life, Roslyn Tarrant
Doctoral
Appropriate infant feeding practices play a crucial part in achieving optimal health outcomes. It is well established that the protection, promotion and support of exclusive breastfeeding during the first 6-months of life would decrease the health inequalities experienced by mothers and infants (WHO/UNICEF, 2003c). Optimal weaning practices also have significant implications for infant health, notably in relation to normal development, mineral balance and the development of obesity (Department of Health, 1994). Historically, Ireland has one of the lowest breastfeeding rates in Europe. Furthermore, prior Irish-based research indicates significant deficiencies relating to weaning practices among mothers during the first year of …
The Mechanism Of Silver Dissolution For Biomedical Devices And Hygienic Coating Applications., Yanmei Ma
The Mechanism Of Silver Dissolution For Biomedical Devices And Hygienic Coating Applications., Yanmei Ma
Doctoral
This work focuses on the mechanism of silver dissolution for biomedical and hygienic coating applications. The research work began from the investigation of silver dissolution behaviour from pure silver and silver-platinum alloys in solutions with or without chloride using the technique of cyclic volammetry (CV). A zero resistance amperometry (ZRA) measurement was carried out to study the effect of platinum on the silver dissolution behaviour in 0.89%wt. NaCI solution. The mechanism of silver dissolution from pure silver and silver-platinum alloys in 0.89%wt. NaCI solution was proposed by an equivalent circuit model under the investigation of electrochemical impedance spectroscopy (EIS). It …
Combination Of Natural Variability Estimation With Real Time Measurement For Mushroom Shelf Life Assessment., Leixuri Aguirre
Combination Of Natural Variability Estimation With Real Time Measurement For Mushroom Shelf Life Assessment., Leixuri Aguirre
Doctoral
The shelf life of mushrooms (Agaricus bisporus) is affected by the natural variability of the produce which influences the perishable vegetable quality. One of the main causes of this variability is non-homogeneity in the product maturity at harvest, resulting in each vegetable batch being at a different stage of senescence. The present work aims to study a new approach to improve the assessment of the shelf life of mushrooms (Agaricus bisporus) taking into account this variability. The study of variability involved the: i) study of the shelf life, quality parameters and variability of the mushrooms and modelling these experimental laboratory …
Poverty, Diet And Health Behaviours: A Quantitative And Qualitative Study Among Young Urbanised Women., Daniel Mccartney
Poverty, Diet And Health Behaviours: A Quantitative And Qualitative Study Among Young Urbanised Women., Daniel Mccartney
Doctoral
Demographic, socio-economic, attitudinal, dietary, health behavioural and anthropometric data were collected from 221 “disadvantaged” and 74 “advantaged” women aged 18-35 years across Dublin, according to the provisions of a novel socio-economic sampling frame. Internal and external validation techniques established the dietary assessment method of choice and identified “valid” dietary reporters (n=216, 153 disadvantaged, 63 advantaged) among this sample. Five qualitative focus groups (n=5-8 per group) were also conducted among disadvantaged women to examine their diet and health behaviour choices. Lower intakes of fruit and vegetables (172g/d vs. 405g/d, p
The Effects Of Posture On Quantitative Eeg And End Tidal Co2 Duringstandardised Optimal Hyperventiation In Healthy Adults And In Patients With Childhood Absence Epilepsy And Attack Disorders, Ann Coughlan
Doctoral
Hyperventilation is used as an activation procedure during EEG. It induces hypocapnia, which elicits changes in brain wave activity that may be diagnostically useful. The mechanism of action by which Hyperventilation (HV) produces slow theta/delta waves on EEG remains conjectural. Four criteria determine the magnitude of HV response: vigorous exchange of air, blood glucose levels, age of subject, and posture. Effects of posture are poor studied quantitatively. Objective: A Standardised Optimal Hyperventilation Protocol (SOHVP), which elicited Hyperventilation Induced High Amplitude Rhythmic Slow activity (HIHARS) during EEG controlling for posture seated (stOHV) and supine (spOHV) is presented and validated. Method: Respiratory …