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2016

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Jiann-Ping Hsu College Of Public Health Magazine, Georgia Southern University Jan 2016

Jiann-Ping Hsu College Of Public Health Magazine, Georgia Southern University

College of Public Health: News & Publications

  • A Message from the Dean
  • Why I Give
  • Maintaining Access
  • What Weight?
  • A School Worth Saving
  • Learning the Trade by Helping Others
  • Faculty Spotlight
  • Research Spotlight
  • Student Life


Skill Mastery And The Formation Of Graduate Identity In Bachelor Graduates: Evidence From Australia, Denise Jackson Jan 2016

Skill Mastery And The Formation Of Graduate Identity In Bachelor Graduates: Evidence From Australia, Denise Jackson

Research outputs 2014 to 2021

Mastery of certain generic skills and the successful formation of pre-professional identity are widely considered to influence graduate work-readiness and job attainment. Given their links with enhanced productivity, performance and innovation, skill development and graduate identity appear critical amidst ongoing global stagnation in advanced economies. This paper focuses on the success of higher education in developing generic skills and graduate identity using national data (n = 80,891) for 51 providers. It investigates the influence of certain demographics, study and degree characteristics on these important areas of undergraduate curricula. Furthermore, it gauges recent graduate perceptions on the importance of skill development …


Influence Of Neural Network Training Parameters On Short-Term Wind Forecasting, Adel Brka, Yasir M. Al-Abdeli, Ganesh Kothapalli Jan 2016

Influence Of Neural Network Training Parameters On Short-Term Wind Forecasting, Adel Brka, Yasir M. Al-Abdeli, Ganesh Kothapalli

Research outputs 2014 to 2021

This paper investigates factors which can affect the accuracy of short-term wind speed prediction when done over long periods spanning different seasons. Two types of neural networks (NNs) are used to forecast power generated via specific horizontal axis wind turbines. Meteorological data used are for a specific Western Australian location. Results reveal that seasonal variations affect the prediction accuracy of the wind resource, but the magnitude of this influence strongly depends on the details of the NN deployed. Factors investigated include the span of the time series needed to initially train the networks, the temporal resolution of these data, the …


Cardiovascular, Metabolic Effects And Dietary Composition Of Ad-Libitum Paleolithic Vs. Australian Guide To Healthy Eating Diets: A 4-Week Randomised Trial, Angela Genoni, Philippa Lyons-Wall, Johnny Lo, Amanda Devine Jan 2016

Cardiovascular, Metabolic Effects And Dietary Composition Of Ad-Libitum Paleolithic Vs. Australian Guide To Healthy Eating Diets: A 4-Week Randomised Trial, Angela Genoni, Philippa Lyons-Wall, Johnny Lo, Amanda Devine

Research outputs 2014 to 2021

Background:

The Paleolithic diet is popular in Australia, however, limited literature surrounds the dietary pattern. Our primary aim was to compare the Paleolithic diet with the Australian Guide to Healthy Eating (AGHE) in terms of anthropometric, metabolic and cardiovascular risk factors, with a secondary aim to examine the macro and micronutrient composition of both dietary patterns

Methods:

39 healthy women (mean ± SD age 47 ± 13 years, BMI 27 ± 4 kg/m2) were randomised to either the Paleolithic (n = 22) or AGHE diet (n = 17) for four weeks. Three-day weighed food records, body composition and biochemistry data …


Protocol For Care After Lymphoma (Caly) Trial: A Phase Ii Pilot Randomised Controlled Trial Of A Lymphoma Nurse-Led Model Of Survivorship Care, Karen Taylor, David Joske, Max Bulsara, Caroline Bulsara, Leanne Monterosso Jan 2016

Protocol For Care After Lymphoma (Caly) Trial: A Phase Ii Pilot Randomised Controlled Trial Of A Lymphoma Nurse-Led Model Of Survivorship Care, Karen Taylor, David Joske, Max Bulsara, Caroline Bulsara, Leanne Monterosso

Research outputs 2014 to 2021

Introduction:

Lymphoma is the sixth most common cancer diagnosed in Australia and internationally. Owing to the aggressive nature of the disease and intensity of treatment, survivors face long-term effects that impact on quality of life. Current models of follow-up post-treatment fail to address these complex issues. Given that 74% of patients with lymphoma cancer now survive 5 years beyond diagnosis and treatment, it is important to address this gap in care.

Aim:

To determine self-reported informational and practical needs, anxiety, depression, stress, coping and empowerment at baseline, 3 and 6 months.

Methods and analysis:

A pilot randomised controlled trial will …


Sources, Incidence And Effects Of Non-Physical Workplace Violence Against Nurses In Ghana, Issac Boafo, Peter Hancock, Eyal Gringart Jan 2016

Sources, Incidence And Effects Of Non-Physical Workplace Violence Against Nurses In Ghana, Issac Boafo, Peter Hancock, Eyal Gringart

Research outputs 2014 to 2021

Aim

To document the incidence, sources and effects of workplace verbal abuse and sexual harassment against Ghanaian nurses.

Methods

A cross-sectional study was conducted in Ghana from 2013–2014 which surveyed 592 professional nurses and midwives working in public hospitals in Ghana using the health sector violence questionnaire.

Results

The majority of participants were females (80%). The average age of participants was 31·76 years and the average number of years practising as nurse was 7·38. Twelve per cent of the participants experienced at least one incident of sexual harassment and 52·2% were exposed to verbal abuse. The majority of perpetrators of …


Corporate Governance And Environmental Disclosure In The Indonesian Mining Industry, Terri Trireksani, Hadrian Geri Djajadikerta Jan 2016

Corporate Governance And Environmental Disclosure In The Indonesian Mining Industry, Terri Trireksani, Hadrian Geri Djajadikerta

Research outputs 2014 to 2021

Sustainability and corporate governance issues are now considered to be important and integral aspects of company performance. Both have established themselves as well-studied topics in the organisational and accountability areas. While there has been a growing interest to study the relationship between these two areas, research publication in this topic is still mainly focused on the Western societies. This study focuses on the corporate governance and sustainability disclosure practices in one of the emerging economies, Indonesia, and assesses the relationships between corporate governance variables and the extent of environmental disclosures made by the mining companies listed in the Indonesia Stock …


Tectonic: A Networked, Generative And Interactive, Conducting Environment For Ipad, Lindsay R. Vickery Dr, Stuart James Jan 2016

Tectonic: A Networked, Generative And Interactive, Conducting Environment For Ipad, Lindsay R. Vickery Dr, Stuart James

Research outputs 2014 to 2021

This paper describes the concept, implementation and context of Tectonic: Rodinia for four realtime composer-conductoors and ensemble. In this work, an addition to the reqertoire of the Decibel Scoreplayer, iPads art networked together using the bonjour protocol to manage connectivity over the network. Unlike previous Scoreplayer works, Rodinia combines "conductor view" control interfaces, "performer view" notation interfaces and an "audience view" overview interface, separately identified by manual connection and yet mutually interactive. Notation is communicated to an ensemble via scores independently generated in realtime in each "performer view" and amalgamated schematically in the :audience view" interface. Interaction in the work …


The Effectiveness Of Self-Management Mobile Phone And Tablet Apps In Long-Term Condition Management: A Systematic Review, Lisa Whitehead, Philippa Seaton Jan 2016

The Effectiveness Of Self-Management Mobile Phone And Tablet Apps In Long-Term Condition Management: A Systematic Review, Lisa Whitehead, Philippa Seaton

Research outputs 2014 to 2021

Background:

Long-term conditions and their concomitant management place considerable pressure on patients, communities, and health care systems worldwide. International clinical guidelines on the majority of long-term conditions recommend the inclusion of self-management programs in routine management. Self-management programs have been associated with improved health outcomes; however, the successful and sustainable transfer of research programs into clinical practice has been inconsistent. Recent developments in mobile technology, such as mobile phone and tablet computer apps, could help in developing a platform for the delivery of self-management interventions that are adaptable, of low cost, and easily accessible.

Objective:

We conducted a systematic review …


Compliance, Palatability And Feasibility Of Paleolithic And Australian Guide To Healthy Eastin Diets In Healtthy Women: A 4-Week Dietary Intervention, Angela Genoni, Johnny Lo, Philippa Lyons-Wall, Amanda Devine Jan 2016

Compliance, Palatability And Feasibility Of Paleolithic And Australian Guide To Healthy Eastin Diets In Healtthy Women: A 4-Week Dietary Intervention, Angela Genoni, Johnny Lo, Philippa Lyons-Wall, Amanda Devine

Research outputs 2014 to 2021

(1) Background/Objectives:

The Paleolithic diet has been receiving media coverage in Australia and claims to improve overall health. The diet removes grains and dairy, whilst encouraging consumption of fruits, vegetables, meat, eggs and nuts. Our aim was to compare the diet to the Australian Guide to Healthy Eating (AGHE) in terms of compliance, palatability and feasibility;

(2) Subjects/Methods:

39 healthy women (age 47 ± 13 years, BMI 27 ± 4 kg/m2) were randomised to an ad-libitum Paleolithic (n = 22) or AGHE diet (n = 17) for 4-weeks. A food checklist was completed daily, with mean discretionary consumption …


Nothing Happens Here: Songs About Perth, Jon Stratton, Adam Trainer Jan 2016

Nothing Happens Here: Songs About Perth, Jon Stratton, Adam Trainer

Research outputs 2014 to 2021

This essay examines Perth as portrayed through the lyrics of popular songs written by people who grew up in the city. These lyrics tend to reproduce the dominant myths about the city: that it is isolated, that it is self-satisfied, that little happens there. Perth became the focus of song lyrics during the late 1970s time of punk with titles such as 'Arsehole of the Universe' and 'Perth Is a Culture Shock'. Even the Eurogliders' 1984 hit, 'Heaven Must Be There', is based on a rejection of life in Perth. However, Perth was also home to Dave Warner, whose songs …


Superior Inhibitory Control And Resistance To Mental Fatigue In Professional Road Cyclists, Kristy Martin, Walter Staiano, Paolo Mensaspa, Tom Hennessey, Samuele M. Marcora, Richard J. Keegan, Kevin G. Thompson, David T. Martin, Shona R. Halson, Ben Rattray Jan 2016

Superior Inhibitory Control And Resistance To Mental Fatigue In Professional Road Cyclists, Kristy Martin, Walter Staiano, Paolo Mensaspa, Tom Hennessey, Samuele M. Marcora, Richard J. Keegan, Kevin G. Thompson, David T. Martin, Shona R. Halson, Ben Rattray

Research outputs 2014 to 2021

Purpose:

Given the important role of the brain in regulating endurance performance, this comparative study sought to determine whether professional road cyclists have superior inhibitory control and resistance to mental fatigue compared to recreational road cyclists.

Methods:

After preliminary testing and familiarization, eleven professional and nine recreational road cyclists visited the lab on two occasions to complete a modified incongruent colour-word Stroop task (a cognitive task requiring inhibitory control) for 30 min (mental exertion condition), or an easy cognitive task for 10 min (control condition) in a randomized, counterbalanced cross-over order. After each cognitive task, participants completed a 20-min time …


Inactivation Of Cytomegalovirus In Breast Milk Using Ultraviolet-C Irradiation: Opportunities For A New Treatment Option In Breast Milk Banking, Megan L. Lloyd, Nurul Hod, Jothsna Jayaraman, Elizabeth A. Marchant, Lukas Christen, Peter Chiang, Peter E. Hartmann, Geoffrey R. Shellam, Karen N. Simmer Jan 2016

Inactivation Of Cytomegalovirus In Breast Milk Using Ultraviolet-C Irradiation: Opportunities For A New Treatment Option In Breast Milk Banking, Megan L. Lloyd, Nurul Hod, Jothsna Jayaraman, Elizabeth A. Marchant, Lukas Christen, Peter Chiang, Peter E. Hartmann, Geoffrey R. Shellam, Karen N. Simmer

Research outputs 2014 to 2021

Pasteurized donor human milk is provided by milk banks to very preterm babies where their maternal supply is insufficient or unavailable. Donor milk is currently processed by Holder pasteurization, producing a microbiologically safe product but significantly reducing immunoprotective components. Ultraviolet-C (UV-C) irradiation at 254 nm is being investigated as an alternative treatment method and has been shown to preserve components such as lactoferrin, lysozyme and secretory IgA considerably better than Holder pasteurization. We describe the inactivation of cytomegalovirus, a virus commonly excreted into breast milk, using UV-C irradiation. Full replication was ablated by various treatment doses. However, evidence of viral …


Photonic Microstructures For Energy-Generating Clear Glass And Net-Zero Energy Buildings, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, Kamal Alameh Jan 2016

Photonic Microstructures For Energy-Generating Clear Glass And Net-Zero Energy Buildings, Mikhail Vasiliev, Ramzy Alghamedi, Mohammad Alam, Kamal Alameh

Research outputs 2014 to 2021

Transparent energy-harvesting windows are emerging as practical building-integrated photovoltaics (BIPV), capable of generating electricity while simultaneously reducing heating and cooling demands. By incorporating spectrally-selective diffraction gratings as light deflecting structures of high visible transparency into lamination interlayers and using improved spectrally-selective thin-film coatings, most of the visible solar radiation can be transmitted through the glass windows with minimum attenuation. At the same time, the ultraviolet (UV) and a part of incident solar infrared (IR) radiation energy are converted and/or deflected geometrically towards the panel edge for collection by CuInSe2 solar cells. Experimental results show power conversion efficiencies in excess …


Re-Conceptualising Graduate Employability: The Importance Of Pre-Professional Identity, Denise Jackson Jan 2016

Re-Conceptualising Graduate Employability: The Importance Of Pre-Professional Identity, Denise Jackson

Research outputs 2014 to 2021

Despite efforts to broaden the concept of graduate employability, there remains an overarching focus on developing industry-relevant employability skills. The skills-based approach is, however, too narrow and does not fully capture the complexity of graduate work-readiness. This paper argues for the redefining of graduate employability by embracing pre-professional identity (PPI) formation. PPI relates to an understanding of and connection with the skills, qualities, conduct, culture and ideology of a student's intended profession. The ‘communities of practice’ model is drawn upon to demonstrate how PPI can be developed during university years. Here, a student makes sense of his/her intended profession through …


Permanent Slides For Morphological Studies Of Small Crustaceans: Serban's Method And Its Variation Applied On Bathynellacea (Malacostraca), Giulia Perina, Ana I. Camacho Jan 2016

Permanent Slides For Morphological Studies Of Small Crustaceans: Serban's Method And Its Variation Applied On Bathynellacea (Malacostraca), Giulia Perina, Ana I. Camacho

Research outputs 2014 to 2021

Morphological studies of small invertebrates often involve the preparation of slides to observe minute body parts under a compound microscope. Preparation should facilitate observation, through traditional optical microscopy, of small surface structures on different planes, like pores, spines and setae. Various methods and techniques, using different mounting media that specialists have adopted to observe and preserve small crustaceans, have their advantages and disadvantages.Within the order Bathynellacea, specimens in the family Bathynellidae are particularly challenging due to their small size (0.5 to 2.25 mm body length) and very delicate exoskeleton, which tends to be completely digested when using common clearing mounting …


The Influence Of The Sex Of And Prior Relationship Between The Perpetrator And Victim On Perceptions Of Stalking: A Qualitative Analysis, Jeff Bath, Adrian J. Scott Jan 2016

The Influence Of The Sex Of And Prior Relationship Between The Perpetrator And Victim On Perceptions Of Stalking: A Qualitative Analysis, Jeff Bath, Adrian J. Scott

Research outputs 2014 to 2021

The sex of and prior relationship between the perpetrator and victim have been shown to influence perceptions of stalking. To explore the ways in which shared assumptions around these factors interact to shape perceptions of stalking, this study analyses the deliberations of mock juries as they attempt to reach a unanimous verdict on a hypothetical stalking case summary. Twelve mock juries comprising between five and six ‘jurors’ (n = 64) were presented with one of three versions of a case summary (stranger, acquaintance, and ex-partner) describing a man stalking a woman or a woman stalking a man. Thematic analysis shows …


Continuous Flow Reactor For Carbonic Acid Hydrolysis/Pretreatment Of Microalgal Biomass To Produce Bioethanol, Nicholas Dudenhoeffer Jan 2016

Continuous Flow Reactor For Carbonic Acid Hydrolysis/Pretreatment Of Microalgal Biomass To Produce Bioethanol, Nicholas Dudenhoeffer

Doctoral Dissertations

"In order to maximize bioethanol production an efficient pretreatment method for the hydrolysis of polysaccharides to fermentable sugars is necessary. Commonly used pretreatment methods are the slow enzymatic hydrolysis and the corrosive mineral acid hydrolysis process that requires a post-treatment neutralization step and generates waste stream. We investigated the high temperature water with carbonic acid catalyst as an alternative method. Carbonic acid generated from dissolved CO2 is inexpensive and environmentally benign, and easily removed by decompression. A high pressure continuous flow reactor that can continuously process the wet biomass stream and perform the carbonic acid hydrolysis in-situ using the …


Microwave Material Characterization Of Alkali-Silica Reaction (Asr) Gel In Cementitious Materials, Ashkan Hashemi Jan 2016

Microwave Material Characterization Of Alkali-Silica Reaction (Asr) Gel In Cementitious Materials, Ashkan Hashemi

Doctoral Dissertations

"Since alkali-silica reaction (ASR) was recognized as a durability challenge in cement-based materials over 70 years ago, numerous methods have been utilized to prevent, detect, and mitigate this issue. However, quantifying the amount of produced ASR byproducts (i.e., ASR gel) in-service is still of great interest in the infrastructure industry. The overarching objective of this dissertation is to bring a new understanding to the fundamentals of ASR formation from a microwave dielectric property characterization point-of-view, and more importantly, to investigate the potential for devising a microwave nondestructive testing approach for ASR gel detection and evaluation. To this end, a comprehensive …


Contribution Of New Thiol Antioxidant In The Treatment Of Acetaminophen Toxicity, Ahdab Naeem Khayyat Jan 2016

Contribution Of New Thiol Antioxidant In The Treatment Of Acetaminophen Toxicity, Ahdab Naeem Khayyat

Doctoral Dissertations

"Acetaminophen (N-acetyl-p-aminophenol, APAP) is one of the most widely used over-the-counter antipyretic analgesic medications. It is safe at therapeutic doses, but an overdose can result in severe hepato-nephrotoxicity, a leading cause of drug-induced acute liver failure in the U.S. Although a few different mechanisms have been proposed for APAP-induced toxicity, a significant amount of evidence has pointed to the potential involvement of oxidative stress in acetaminophen toxicity. Depletion of glutathione (GSH) is one of the initiating steps in APAP-induced toxicity; therefore, one strategy for restricting organ damage is to restore GSH levels by using GSH prodrugs like N-acetylcysteine (NAC). Although …


Geophysical Imaging Of Karst Features In Missouri, Jeremiah Chukwunonso Obi Jan 2016

Geophysical Imaging Of Karst Features In Missouri, Jeremiah Chukwunonso Obi

Doctoral Dissertations

"Automated electrical resistivity tomography (ERT) supported with multichannel analysis of surface waves (MASW) and boring data were used to map karst related features in Missouri in order to understand karst processes better in Missouri. Previous works on karst in Missouri were mostly surficial mapping of bedrock outcrops and joints, which are not enough to define the internal structure of karst system, since most critical processes in karst occur underground. To understand these processes better, the density, placement and pattern of karst related features like solution-widened joints and voids, as well as top of bedrock were mapped. In the course of …


Existence And Classification Of Nonoscillatory Solutions Of Two Dimensional Time Scale Systems, Özkan Özturk Jan 2016

Existence And Classification Of Nonoscillatory Solutions Of Two Dimensional Time Scale Systems, Özkan Özturk

Doctoral Dissertations

"During the past years, there has been an increasing interest in studying oscillation and nonoscillation criteria for dynamic equations and systems on time scales that harmonize the oscillation and nonoscillation theory for the continuous and discrete cases in order to combine them in one comprehensive theory and eliminate obscurity from both.

We not only classify nonoscillatory solutions of dynamic equations and systems on time scales but also guarantee the (non)existence of such solutions by using the Knaster fixed point theorem, Schauder - Tychonoff fixed point theorem, and Schauder fixed point theorem. The approach is based on the sign of nonoscillatory …


Cable Shovel Dipper Stress And Fatigue Failure Modeling In Formation Excavation Engineering, Muhammad Azeem Raza Jan 2016

Cable Shovel Dipper Stress And Fatigue Failure Modeling In Formation Excavation Engineering, Muhammad Azeem Raza

Doctoral Dissertations

"Large capacity shovels are used to achieve economic bulk production in surface mining operations. The suspended payload combined with dipper weight and formation resistive forces results in severe stress loading of the shovel front-end assembly. Material flaws, high stresses and harsh excavation conditions can initiate cracks in the dipper-teeth assembly. High stresses can cause these cracks to propagate to critical lengths resulting in fatigue failure, unscheduled downtimes, costly unplanned repairs, and downstream processing circuit problems. The literature reveals that dipper-related problems significantly reduce shovel up-time. This research is a pioneering effort towards developing a solid frame work for stress profiling, …


Subterranean Photobioreactors For Commercial-Industrial Scale Algal Culture, Daniel James Vidt Jan 2016

Subterranean Photobioreactors For Commercial-Industrial Scale Algal Culture, Daniel James Vidt

Doctoral Dissertations

"There are many potential benefits to the mining industry accruing from the application of algal biotechnology. The main benefits are in the production of biodiesel and in the remediation of mining brownfields. The research in this study was centered in the original idea that these brownfields represent a tremendous opportunity for use as a hybrid model for redevelopment into sustainable "mines" of biomass. The ability of these underground spaces serving as bioreactors to control all aspects of the growing environment, from lighting, to temperature, to biosecurity, are key advantages that have been identified in the literature. The many benefits inherent …


Study Of Heat Transfer Phenomenon During Natural Convection, Muhammad Yousaf Jan 2016

Study Of Heat Transfer Phenomenon During Natural Convection, Muhammad Yousaf

Doctoral Dissertations

"The purpose of the present study was to numerically investigate the effects of the roughness elements on the heat transfer during natural convection. A computational algorithm was developed based on the Lattice Boltzmann method to conduct numerical study in two-dimensional rectangular cavities and Rayleigh-Bénard cell. A single relaxation time Bhatnagar-Gross-Krook model of Lattice Boltzmann method was used to solve the coupled momentum and energy equations in two-dimensional lattices. Computational model was validated against previous benchmark solutions, and a good agreement was found to exist. A Newtonian fluid of Prandtl (Pr) number 1.0 was considered for this numerical study. The range …


Modeling Gas Inflow For Extremely Low Permeability Shale Using Cfd, Chatetha Chumkratoke Jan 2016

Modeling Gas Inflow For Extremely Low Permeability Shale Using Cfd, Chatetha Chumkratoke

Doctoral Dissertations

"Computational fluid dynamics (CFD) has been used to model 2-D well inflow over a range of permeabilities to study the impact of various well completion strategies (Augustine, 2011). Augustine's 2-D model was subsequently extended for 3-D flow by Thepporprapakorn (2013), for gas flow in the permeability range of tight gas (0.01 mD).

This work presents a 3-D CFD model of gas inflow valid for extremely low ranges of permeability (0.00001 mD). In extremely low permeability, gas flow is complex and includes flow from fractures, flow through porous media, and diffusive gas transport. Diffusive gas transport is important when strong density …


Modeling Explosive Lensing On A Cylindrical Body In Air: A First Step Towards Sealing An Underwater Offshore Oil Spill, Phillip R. Mulligan Jan 2016

Modeling Explosive Lensing On A Cylindrical Body In Air: A First Step Towards Sealing An Underwater Offshore Oil Spill, Phillip R. Mulligan

Doctoral Dissertations

"In 2010, the British Petroleum (BP) Deepwater Horizon accident leaked oil into the Gulf of Mexico for 87 days. A fast response method that can seal an oil pipe and stop the release of oil is needed in order to prevent future oil leaks from turning into ecological and financial disasters. Explosives can serve this need.

This research examined how a circular implosive discontinuous explosive lens interacts with a cylindrical surface. The following research was designed to study the applicability of the Method this author developed to predict the peak pressure from multiple shockwaves converging on a centrally located cylinder. …


Interrogating Power And Disrupting The Discourse About Onslow And The Gas Hubs, Kayt Davies, Karma Barndon Jan 2016

Interrogating Power And Disrupting The Discourse About Onslow And The Gas Hubs, Kayt Davies, Karma Barndon

Research outputs 2014 to 2021

When government statements talk about a secret deal with a multinational consortium that will see more than A$250 million spent on a town with a population of around 1000 people, questions need to be asked. Basic maths equates the spend to around $250,000 a person and yet many people in the town are unhappy about the whole deal. 'Tracking Onslow' was a collaboration between a university and a local government that used journalism as a methodology to document and interrogate the interaction between Chevron, the state and local governments and the Onslow community over a three-year period. This article focuses …


Advancing Microalgae Culturing Via Bubble Dynamics, Mass Transfer, And Dynamic Growth Investigations, Aastha Ojha Jan 2016

Advancing Microalgae Culturing Via Bubble Dynamics, Mass Transfer, And Dynamic Growth Investigations, Aastha Ojha

Doctoral Dissertations

"The major hindrances to large scale cultivation of microalgae are the problems associated with the design, operation, and scale-up of airlift photobioreactors (PBRs), due to a lack of a comprehensive understanding of the gas-liquid interaction process in real microalgae cultures. Thus, the overall objective of this work is to advance the fundamental understanding of microalgae culturing via gas holdup, bubble dynamics, mass transfer, and dynamic growth investigations.

First, a four-point optical fiber probe technique was employed to study the local gas holdup, and bubble dynamics properties such as bubble passage frequency, chord length and bubble velocity distribution, and interfacial area …


Development Of Implants Composed Of Bioactive Materials For Bone Repair, Wei Xiao Jan 2016

Development Of Implants Composed Of Bioactive Materials For Bone Repair, Wei Xiao

Doctoral Dissertations

"The purpose of this Ph.D. research was to address the clinical need for synthetic bioactive materials to heal defects in non-loaded and loaded bone. Hollow hydroxyapatite (HA) microspheres created in a previous study were evaluated as a carrier for controlled release of bone morphogenetic protein-2 (BMP2) in bone regeneration. New bone formation in rat calvarial defects implanted with BMP2-loaded microspheres (43%) was significantly higher than microspheres without BMP2 (17%) at 6 weeks postimplantation. Then hollow HA microspheres with a carbonate-substituted composition were prepared to improve their resorption rate. Hollow HA microspheres with ~12 wt. % of carbonate showed significantly higher …