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Articles 1 - 30 of 232
Full-Text Articles in Medicine and Health Sciences
An Assessment Of The Effects Of Desertification In Yobe State, Nigeria, Jibril Musa Phd
An Assessment Of The Effects Of Desertification In Yobe State, Nigeria, Jibril Musa Phd
Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria
Desertification is one of the most serious environmental and socio-economic problems of our time. Desertification describes circumstances of land degradation in arid, semi-arid and dry sub-humid regions resulting from the climatic variation and human activities. The fundamental goal of this thesis was to assess the effects of desertification in Yobe State, Nigeria. The present threat of desertification in the sahel has reached an alarming stage where crops cultivation and animal rearing/grazing are no more productive, soil has lost its nutrient/fertility, various infrastructure had given way because of windstorm from the neighbouring Niger Republic and sand dunes had taken over. The …
Stress And Strain Adaptation In Load-Dependent Remodeling Of The Embryonic Left Ventricle, Christine Buffinton
Stress And Strain Adaptation In Load-Dependent Remodeling Of The Embryonic Left Ventricle, Christine Buffinton
Faculty Journal Articles
Altered pressure in the developing left ventricle (LV) results in altered morphology and tissue material properties. Mechanical stress and strain may play a role in the regulating process. This study showed that confocal microscopy, three-dimensional reconstruction, and finite element analysis can provide a detailed model of stress and strain in the trabeculated embryonic heart. The method was used to test the hypothesis that end-diastolic strains are normalized after altered loading of the LV during the stages of trabecular compaction and chamber formation. Stage-29 chick LVs subjected to pressure overload and underload at stage 21 were reconstructed with full trabecular morphology …
Using Remote Sensing Data To Improve Rice Production In Kutigi, Niger State, Nigeria, Jibril Musa Phd, M B. Yunusa
Using Remote Sensing Data To Improve Rice Production In Kutigi, Niger State, Nigeria, Jibril Musa Phd, M B. Yunusa
Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria
This research work looked in the used of Remote Sensing to improve Agricultural production in Kutigi, Niger State. The aim of the study is to use remote sensing to improve rice farming activities in Kutigi, Niger State. It is very important to identify such methods to improve Agricultural production because experts are always interested in new researches and findings to better the standard of living in any environment. In view of this, Remotely-sensed data could be used or employed to elevate most of these agricultural problems in Kutigi through the following objectives: Using Landsat imagery to assess the present landuse …
Properties And Applications Of Sensory Outcome Measures In Carpal Tunnel Syndrome, Derek Km Cheung
Properties And Applications Of Sensory Outcome Measures In Carpal Tunnel Syndrome, Derek Km Cheung
Electronic Thesis and Dissertation Repository
This thesis aimed to determine the psychometric properties and applications of sensory threshold tools and outcome measures in patients with Carpal Tunnel Syndrome (CTS). The first chapter is a psychometric study that defines clinically important difference (CID), construct validity and responsiveness of touch and vibration threshold tools and in the Symptoms Severity Scale (SSS). The study found the CID for the PSSD and for the SSS was 0.15g/mm2 and 0.50 respectively. The study also found that the Vibrometer was more representative of hand function and responsive compared PSSD. The second objective of this thesis was to determine the feasibility …
Flight Physician - December, 2012, Civil Aviation Medical Association
Flight Physician - December, 2012, Civil Aviation Medical Association
Browse all Civil Aviation Medical Association Newsletters
A sixteen page newsletter of the Civil Aviation Medical Association. The newsletter provided news about civil aviation medicine and information related to the organization.
Development Of A Novel Technique For Predicting Tumor Response In Adaptive Radiation Therapy, Rebecca Marie Seibert
Development Of A Novel Technique For Predicting Tumor Response In Adaptive Radiation Therapy, Rebecca Marie Seibert
Doctoral Dissertations
This dissertation concentrates on the introduction of Predictive Adaptive Radiation Therapy (PART) as a potential method to improve cancer treatment. PART is a novel technique that utilizes volumetric image-guided radiation therapy treatment (IGRT) data to actively predict the tumor response to therapy and estimate clinical outcomes during the course of treatment. To implement PART, a patient database containing IGRT image data for 40 lesions obtained from patients who were imaged and treated with helical tomotherapy was constructed. The data was then modeled using locally weighted regression. This model predicts future tumor volumes and masses and the associated confidence intervals based …
On The Importance Of Modeling Stent Procedure For Predicting Arterial Mechanics, Shijia Zhao, Linxia Gu, Stacey R. Froemming
On The Importance Of Modeling Stent Procedure For Predicting Arterial Mechanics, Shijia Zhao, Linxia Gu, Stacey R. Froemming
Department of Mechanical and Materials Engineering: Faculty Publications
The stent-artery interactions have been increasingly studied using the finite element method for better understanding of the biomechanical environment changes on the artery and its implications. However, the deployment of balloon-expandable stents was generally simplified without considering the balloon-stent interactions, the initial crimping process of the stent, its overexpansion routinely used in the clinical practice, or its recoil process. In this work, the stenting procedure was mimicked by incorporating all the above-mentioned simplifications. The impact of various simplifications on the stent-induced arterial stresses was systematically investigated. The plastic strain history of stent and its resulted geometrical variations, as well as …
The Effects Of Energy Beverages In Counteracting The Symptoms Of Mild Hypoxia At Legal General Aviation Altitudes, Daniel Mark Bull
The Effects Of Energy Beverages In Counteracting The Symptoms Of Mild Hypoxia At Legal General Aviation Altitudes, Daniel Mark Bull
Doctoral Dissertations and Master's Theses
The purpose of this thesis was to conduct preliminary research, in the form of a pilot study, concerning the natural effects of hypoxia compared to the effects of hypoxia experienced after the consumption of an energy beverage. The study evaluated the effects of hypoxia on FAA certificated pilots at a simulated legal general aviation altitude, utilizing the normobaric High Altitude Lab (HAL) located at Embry Riddle Aeronautical University, Daytona Beach, Florida. The researcher tested 11 subjects, who completed three simulated flight tasks within the HAL using the Frasca International Mentor Advanced Aviation Training Device (AATD). The flight tasks were …
A Critical Analysis Of The Kyoto Protocol Using Monte Carlo Simulation And Magicc, Penny Lambert
A Critical Analysis Of The Kyoto Protocol Using Monte Carlo Simulation And Magicc, Penny Lambert
The Plymouth Student Scientist
The United Nations Framework Convention on Climate Change adopted the Kyoto Protocol in December 1997. Emissions data from national registries were used to quantify the total anthropogenic emissions of signatory parties between 1990 and 2009, found to have been reduced by approximately 18 percent of base year levels. Using IPCC Special Report Emissions Scenarios (SRES) as a practicable baseline for non-mitigation, three distinct intervention scenarios were constructed from target and observed emissions reductions under the Protocol to investigate their climatic implications against unabated anthropogenic carbon by the end of the 21st century. MAGICC Version 5.3 was used to model forecast …
In Vitro Assessment Of The Survivability Of Lactobacillus Casei Dn-114 001 And Lactobacillus Casei Shirota, Within Commercialised Food Matrices, In The Upper Gastrointestinal Tract, Rosie Wills
The Plymouth Student Scientist
The aim of this study was to determine the survivability of probiotics; Lactobacillus casei Shirota and Lactobacillus casei DN-114 001, within their respective commercialised food matrices YakultÃ’ and ActimelÃ’, during in vitro simulated gastrointestinal transit. Original and Light/Fat Free varieties of each brand were assessed to determine whether nutritional composition affected bacterial survival rate. Strains were exposed to 3 hours of simulated gastric transit at pH 2, using Hydrochloric Acid (32%) and Pepsin (3mg ml-1), followed by 2 hours of simulated duodenal transit, at pH 6.5, using Bile Salts (0.3% w/v) and Sodium Hydroxide (4M). Samples were serially diluted with …
A Preliminary Study Into The Use Of Canopy Invertebrates And Sampling Techniques In Relation To Forest Indicators In A Fragmented Scottish Woodland - Application And Management, Natalie Walsh
The Plymouth Student Scientist
Caledonian forests within the Scottish Highlands have experienced severe fragmentation and currently remain as small isolated habitats. Canopy invertebrates within these forests play an important role in ecosystem functioning and may be potentially used as forest indicators for the use in forest management. Four different low-cost invertebrate trapping methods were deployed into birch, oak and Scots pine trees, comparing family diversity and composition between tree and trap types. Data on canopy spread, tree height and d.b.h were also tested to see if they influenced family composition of invertebrates. Collected data found little difference in family diversity and composition between tree …
A Study To Investigate The Effects Of Priming A Lad's Magazine Brand On Women's Perception Of The Sexual Harassment Of Other Women, Emily Robson
The Plymouth Student Scientist
This study investigated the effects of priming a Lad’s magazine brand on women’s perceptions of the sexual harassment of other women and their notions of women as sex objects. Previous research has demonstrated perceptions of women can be affected by media exposure. Past studies were reviewed and a gap was identified in the current knowledge of the effects of exposure to sexualised media on women’s perceptions of the sexual harassment of other women. One-way ANOVAs did not demonstrate any statistically significant differences in women’s perception of the sexual harassment of other women or notions of women as sex objects in …
Fluorescent Proteins And Chromoproteins In Phylum: Cnidaria, Mario Lewis
Fluorescent Proteins And Chromoproteins In Phylum: Cnidaria, Mario Lewis
The Plymouth Student Scientist
Green fluorescent protein was first discovered in Aequorea victoria. Its significance in a continually expanding range of scientific applications led to the discovery of an abundance of homologous fluorescent proteins and non-fluorescent chromoproteins in a variety of species in the phylum Cnidaria. The document reviews the various proposed hypotheses on the biological functions and biochemistry of fluorescent proteins and chromoproteins, wherein a full resolution remains elusive and is the subject of on-going debate. Mutagenesis has provided novel variants and insights into the relationship between the spectral characteristics and chromophore structures of fluorescent proteins that encompass the visible spectrum. Fluorescent proteins …
Effects Of Algal Toxicity On The Clearance Rate Of The Blue Mussel (Mytilus Edulis), Samantha Bowgen
Effects Of Algal Toxicity On The Clearance Rate Of The Blue Mussel (Mytilus Edulis), Samantha Bowgen
The Plymouth Student Scientist
The purpose of this study was to investigate the effect of toxic strains of Karlodinium veneficum on the clearance rate of Mytilus edulis. Suspensions of the toxic strain and the non-toxic strain of K. veneficum, mixed with an alternative non-toxic species, Prorocentrum micans, were made and performed as parallel experiments in order to compare their effects on clearance rate. Clearance rate was measured by taking samples from suspensions every five minutes up to 30 minutes, and counting the algal cells found within each sample using a Sedgewick rafter slide. No significant difference was found between the two experiments (F (9.322, …
Effects Of A Gardening Task On Chocolate Craving, Sarah-Jane Baugh
Effects Of A Gardening Task On Chocolate Craving, Sarah-Jane Baugh
The Plymouth Student Scientist
Two concepts, craving and nature, were brought together to investigate the effects of a gardening task on chocolate craving. Participants (n = 105) completed a chocolate craving induction before taking part in one of three, five minute tasks (gardening, plasticine, counting). Measures of craving, mood, arousal, attention and heart rate were recorded. The gardening task was found to have beneficial effects with participants experiencing significant changes in energetic arousal (p= .01) and feeling good (p< .01); however, no significant effects were found in the other measures.
Location, Demographic, Lifestyle And Behavioural Influences On Household Participation In Bournemouth Borough Council's Kerbside Recycling Scheme, Stephanie Rooke
Location, Demographic, Lifestyle And Behavioural Influences On Household Participation In Bournemouth Borough Council's Kerbside Recycling Scheme, Stephanie Rooke
The Plymouth Student Scientist
Bournemouth Borough Council (BBC) is performing well in recycling and currently has a recycling rate of 63.9%, but there is still room for BBC to improve the efficiency of the existing ‘Big Bin’ dry kerbside recycling collection scheme and increase the recycling rate further. The aim of the study was to identify the socio-economic groups which participate the least, or contaminate the most, in BBC’s kerbside recycling scheme. A participation survey was carried out over three consecutive collection cycles for three recycling rounds ‘RW1, RW2 and RW5’ to measure how many times each individual household set out their recycling bin …
Spatial And Temporal Patterns Of Erosion Along The Holderness Coastline, North East Yorkshire, Uk, Verity Macfarlane
Spatial And Temporal Patterns Of Erosion Along The Holderness Coastline, North East Yorkshire, Uk, Verity Macfarlane
The Plymouth Student Scientist
There is an increasing problem of erosion in coastal environments, particularly in soft material cliffs which need to be protected; migration to these environments is increasing, up to 75% more of the total population is predicted to live in close proximity to the coast by 2020. The Holderness coast (located in North East Yorkshire, UK) is the fastest eroding coastline in Europe. It comprises of soft clay, glacial till deposits from the Devensian period (18-13Ka). Previous studies have calculated that many parameters such as till properties, cliff geomorphology, cliff topography, strength and reaction to varied water contents are varied throughout …
Biologging Science: Advances In Our Knowledge Of Seabirds And Their Behaviours, David Evans
Biologging Science: Advances In Our Knowledge Of Seabirds And Their Behaviours, David Evans
The Plymouth Student Scientist
The use of miniature tags attached to free-living animals to record data is termed ‘biologging’. This procedure has been used to study seabirds since the 1970’s and our knowledge of their behaviour, physiology and migration has advanced through the decades, along with the potential for conservation of species. Technological advances in recent years have improved data resolution and storage, enabling a better understanding of seabirds and their environment
The Ecology Of Tardigrades, Emma Northcote-Smith
The Ecology Of Tardigrades, Emma Northcote-Smith
The Plymouth Student Scientist
No abstract provided for this article.
Comparing Risk-Taking And Digit Ratio (2d:4d) In Offenders And Non-Offenders, Taja Anderson
Comparing Risk-Taking And Digit Ratio (2d:4d) In Offenders And Non-Offenders, Taja Anderson
The Plymouth Student Scientist
Offenders differ from non-offenders in their propensity to engage in risk-taking behaviour. The ratio of the index and ring fingers (2D:4D), a proxy of prenatal testosterone exposure, has been linked to risk-taking behaviour. The present study compared risk-taking in 45 male offenders and 66 non-offenders using the Balloon Analogue Risk Task (BART). Furthermore, it sought to determine the relationship between their 2D:4D ratios and risk-taking behaviours. No significant differences were found between the two groups in their risk-taking behaviour and no significant correlations were found between 2D:4D and risk-taking in either group. These findings are discussed in relation to previous …
The Effects Of Logging And Fragmentation On Bird Diversity, Bethany Mccarthy
The Effects Of Logging And Fragmentation On Bird Diversity, Bethany Mccarthy
The Plymouth Student Scientist
Deforestation and forest degradation is occurring globally at an alarming rate. The annual net loss of forest cover has been reduced in the past decade through sustainable forest management and conservation measures. Despite this, the remaining forest is becoming increasingly degraded with the total area of primary forest declining. Avian diversity has been shown to decline in degraded and fragmented forests due to logging activities. In this review the impacts of logging on avian communities are assessed by comparing diversity between primary forest and degraded secondary forest, industrial plantations and forest fragment sizes. The major organisations and current initiatives that …
Work Placements As Research-Based Learning - A Student And Employer Perspective, Stephanie Rooke, Georgina Lamb
Work Placements As Research-Based Learning - A Student And Employer Perspective, Stephanie Rooke, Georgina Lamb
The Plymouth Student Scientist
Guest editorial
The Positive Effects Of Aquarium Visits On Children's Behaviour: A Behavioural Observation, Hazel Cocker
The Positive Effects Of Aquarium Visits On Children's Behaviour: A Behavioural Observation, Hazel Cocker
The Plymouth Student Scientist
To date research has found a positive effect of blue spaces on adults’ wellbeing. However, it remains to be seen whether these findings are also true for children. The present study aims to address this gap in the literature. The researchers observed children’s behaviour at the National Marine Aquarium across two weeks, including one where the Big Draw event was taking place. In line with restorative theories of natural environments (Kaplan, 1995, Ulrich, 1983), the current research found the exhibit had a calming effect on behaviour and increased levels of happiness across both weeks. During the Big Draw week children …
How Will Ocean Acidification Affect Marine Photosynthetic Organisms? A Review, Michael Jarrold
How Will Ocean Acidification Affect Marine Photosynthetic Organisms? A Review, Michael Jarrold
The Plymouth Student Scientist
Atmospheric carbon dioxide is increasing year on year, mainly as a result of burning fossil fuels. Although carbon dioxide dissolves in the oceans, mitigating atmospheric effects, it does result in a reduction of the alkalinity of sea water; an effect termed Ocean Acidification (OA). The subsequent changes in carbon chemistry will most likely affect marine photosynthetic organisms in a number of ways; including the ability of organisms to build calcium carbonate shells or skeletons (calcification) and primary production. Previous work indicates that both processes respond to OA, but not always in the same way. Consequently the aim of this review …
Investigating Placebo Mechanisms: Could A Pdp System Exist?, Francesca Payne
Investigating Placebo Mechanisms: Could A Pdp System Exist?, Francesca Payne
The Plymouth Student Scientist
Placebo mechanisms are a neglected area of research. Kirsch’s (1985) response expectancy theory described the stimulus-placebo response process as direct and unmediated. However, Hyland (2011) argued that the placebo effect is mediated by a parallel distributed processing (PDP) system, whereby all cognitive input is processed simultaneously, resulting in perseveration of the placebo effect. The present study examined this theory by utilising a TENS device as a placebo ‘effecting’ reaction times to a computer task, with an additional cognitive load task to further test the PDP system’s existence. Although a general placebo effect was found that increased in the cognitive load …
The Effect Of Itgd Sensitivity And Contact On Attitudes Towards Burqas, Sophie Augarde
The Effect Of Itgd Sensitivity And Contact On Attitudes Towards Burqas, Sophie Augarde
The Plymouth Student Scientist
The presented research investigates whether intergroup disgust sensitivity (affect-laden construct reflecting individual differences to experience revulsion towards outgroups) predicts greater prejudicial attitudes towards burqas. In addition to investigating the effect of ITGD sensitivity on prejudicial attitudes, types of contact (no contact, imagined contact and physical contact) between participants and an outgroup member were investigated to assess the efficacy of reducing prejudice towards women who wear burqas. ITGD sensitivity along with attitude towards burqas was measured over two sessions. Results indicated that there was no statistically significant effect of ITGD sensitivity or contact type on attitudes towards burqas. However, mean score …
The Use Of Errorless Learning In The Rehabilitation Of Action Disorganisation Syndrome: A Case Study, Blaize Dymond
The Use Of Errorless Learning In The Rehabilitation Of Action Disorganisation Syndrome: A Case Study, Blaize Dymond
The Plymouth Student Scientist
This case study investigates the use of errorless learning in the rehabilitation of action disorganisation syndrome (ADS). Case DL suffered 2 traumatic brain injuries to the frontal lobes (2002 and 2010) and presents with a clear case of ADS. DL displays high levels of disorganisation when engaging in sequential tasks. Errorless learning was used in an attempt to rehabilitate abilities in two everyday routine sequential actions; making a cup of tea and making toast with butter and jam. Errorless learning involves the deliberate prevention of errors using both verbal and physical prompts. The intervention resulted in a significant decline in …
Mood Affective Outcomes From Alternate Learning Strategies: Cognitive Flexibility And Dyslexic Education, Dylan Williams
Mood Affective Outcomes From Alternate Learning Strategies: Cognitive Flexibility And Dyslexic Education, Dylan Williams
The Plymouth Student Scientist
It is theorized that persons with dyslexia and associated conditions may be vulnerable to negative wellbeing, alongside academic deficiency, which has been focused on more widely. This study aims to investigate this theory in teenagers, and to draw relationships with teaching methods. Participants were interviewed, and completed the PANAS (Positive and Negative Affect) scale for children, the Matson Evaluation of Social Skills for Youngsters, and the Educational Environment Survey (an assessment of perceptions on education and ability). Participants with dyslexia and associated conditions showed reduced wellbeing compared to controls, and identified distinct experiential differences of education. This study was successful …
The Conservation Biology And Ecology Of The African Leopard Panthera Pardus Pardus, Ross Tyzack Pitman
The Conservation Biology And Ecology Of The African Leopard Panthera Pardus Pardus, Ross Tyzack Pitman
The Plymouth Student Scientist
The African leopard Panthera pardus pardus is an apex predator, and a reliable indicator of a healthy ecosystem. Currently assessed as ‗near threatened‘ by the IUCN Red List of Threatened Species, leopards are exposed to a range of threats that include: habitat loss and/or degradation, depletion of natural prey, conflict with people, consumptive- and non-consumptive practices, and the illegal trade of leopard products. Leopards have disappeared from 37% of their historical range, and are continuing to decline. Leopards have been extirpated across many areas of Africa, especially where people are densely populated, which has left patchily distributed leopard populations throughout …
An Evaluation Of Whether Artificial Refuge Traps Or Baited Traps Are The Most Effective Method For Trapping White-Clawed Crayfish (Austropotamobius Pallipes), Kathryn Walter
The Plymouth Student Scientist
Britain’s only native crayfish species, the white-clawed crayfish Austropotamobius pallipes are threaten through rapid population declines caused by non-indigenous species, habitat degradation and pollution. This study focuses one of the last remaining small A. pallipes population in the Creedy Yeo River, Devon. This study aims to decipher whether the use of artificial refuge traps (ARTs) or baited traps are the most effective method of catching this species, to aid translocation efforts to conserve the remaining population under threat from the American signal crayfish Pacifastacus leniusculus. The capture rate of each type of trap was studied at four sites along the …