Seawater carbonate chemistry and microbioerosion of coral skeletons

Biological mediation of carbonate dissolution represents a fundamental component of the destructive forces acting on coral reef ecosystems. Whereas ocean acidification can increase dissolution of carbonate substrates, the combined impact of ocean acidification and warming on the microbioerosion of coral skeletons remains unknown. Here, we exposed skeletons of the reef-building corals, Porites cylindrica and Isopora cuneata, to present-day (Control: 400 µatm - 24 °C) and future pCO2-temperature scenarios projected for the end of the century (Medium: +230 µatm - +2 °C; High: +610 µatm - +4 °C). Skeletons were also subjected to permanent darkness with initial sodium hypochlorite incubation, and natural light without sodium hypochlorite incubation to isolate the environmental effect of acidic seawater (i.e., Omega aragonite <1) from the biological effect of photosynthetic microborers. Our results indicated that skeletal dissolution is predominantly driven by photosynthetic microborers, as samples held in the dark did not decalcify. In contrast, dissolution of skeletons exposed to light increased under elevated pCO2-temperature scenarios, with P. cylindrica experiencing higher dissolution rates per month (89%) than I. cuneata (46%) in the high treatment relative to control. The effects of future pCO2-temperature scenarios on the structure of endolithic communities were only identified in P. cylindrica and were mostly associated with a higher abundance of the green algae Ostreobium spp. Enhanced skeletal dissolution was also associated with increased endolithic biomass and respiration under elevated pCO2-temperature scenarios. Our results suggest that future projections of ocean acidification and warming will lead to increased rates of microbioerosion. However, the magnitude of bioerosion responses may depend on the structural properties of coral skeletons, with a range of implications for reef carbonate losses under warmer and more acidic oceans.

Implicações Emocionais e Sócio-Cognitivas da Depressão Materna na Criança em Idade Escolar

A depressão materna tem sido associada a factores que em nada promovem o desenvolvimento infantil. O presente estudo tem como objectivo compreender implicações da depressão materna no desenvolvimento da criança em idade escolar A amostra foi composta por 24 mães e respectivos filhos de ambos os sexos, com idades compreendidas entre os 8 e os 15 anos, do 1º, 2º e 3º ciclo, pertencentes ao Agrupamento de Escolas da Batalha, encaminhados aos Serviços de Psicologia e Orientação. As crianças foram distribuídas em grupos distintos, G1, constituído por 12 crianças cujas mães sofreram depressão nos primeiros três anos de vida dos seus filhos, e G2, composto por 12 crianças cujas mães não sofreram depressão nem outros distúrbios psiquiátricos nos primeiros três anos de vida dos seus filhos. A identificação das mães com indicadores de depressão foi feita de forma retrospectiva, através do questionário sobre a saúde do paciente (PHQ-9) e a confirmação diagnóstica através da SCID. Os dados sociodemográficos das mães e crianças foram recolhidos em contexto de entrevista, em que se analisaram dados relativos à gravidez, ao desenvolvimento da criança e ao seu contexto escolar. As mães responderam igualmente ao questionário de capacidades e dificuldades (SDQ) relativo ao comportamento dos seus filhos. Para a análise do sucesso escolar, foi feito um levantamento das notas a Português e Matemática. Por fim, realizou-se a avaliação psicológica das crianças através da WISC-III. A partir da análise dos resultados obtidos, conclui-se a existência do impacto negativo da depressão materna no desenvolvimento da criança em idade escolar, observando-se que as crianças que conviveram com a depressão nos três primeiros anos de vida, apresentam piores notas nas áreas estruturantes do Português e da Matemática, e maiores problemas na adaptação escolar. Relativamente aos Q.I.’s, observam-se diferenças estatisticamente significativas em todos os domínios da escala, apresentando estas crianças um perfil de resultados mais baixo. De acordo com a avaliação feita pelas mães, estas crianças manifestam maiores dificuldades na regulação emocional e apresentam menores habilidades pró-sociais. / Maternal depression has been linked to factors that in no way promote child development. The present study aims to understand the implications of maternal depression on child development at school age. The sample consisted of 24 mothers and their children of both sexes, aged between 8 and 15, from 1st, 2nd and 3rd cycle, belonging to Agrupamento de Escolas da Batalha, referred to the Serviços de Psicologia e Orientação (Psychology and Guidance Services). The children were divided into distinct groups, G1, consisting of 12 children whose mothers suffered depression in the first three years of life of their children, and G2, composed of 12 children whose mothers did not suffer depression or other psychiatric disorders in the first three years of life of their children. The identification of mothers with indicators of depression was made retrospectively, by questionnaire on the patient's health (PHQ-9) and diagnosis confirmation by SCID. Socio-demographic data of mothers and children were gathered in the context of the interview, where data on pregnancy, child development and their school context were analysed. Mothers also responded to the strengths and difficulties questionnaire (SDQ) on the behavior of their children. For the analysis of academic success, a survey was made of the notes on Portuguese and Mathematics. Finally, there was a psychological assessment of children using the WISC-III. From the analysis of the results obtained, the existence of the negative impact of maternal depression on child development at school age is concluded, noting that children who lived with depression for the first three years of life, have worse grades in the structuring areas of Portuguese and Mathematics, and major problems in school adjustment. For IQs, there are significant statistical differences in all areas of the scale, presenting these children lower profile results. According to the assessment made by the mothers, these children have greater difficulty in emotional regulation and have lower pro-social skills.

Crianças sobredotadas: representações sobre as relações com os pares etários e em características

Projeto de investigação no âmbito da Pós-Graduação em Educação Especial – Domínio Cognitivo e Motor, da Escola Superior de Educação de Paula Frassinetti.

Natureza e expressão da criatividade na sobredotação

Dissertação de Mestrado apresentada ao Instituto Superior de Psicologia Aplicada para obtenção de grau de Mestre na especialidade de Psicologia Clínica.

Fiscal Year 2015-16 Accountability Report

Each year the South Carolina Governor’s School for the Arts and Humanities produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, organizational profile, and discussion of the elements of the Malcolm Baldrige Award criteria

Fiscal Year 2015-16 Accountability Report

Each year the South Carolina Governor’s School for Science & Mathematics produces an annual accountability report for the South Carolina General Assembly and the Budget and Control Board. Included is an executive summary, organizational profile, and discussion of the elements of the Malcolm Baldrige Award criteria.

Polyfluoroalkyl chemicals in pooled blood serum from infants, children and adults in Australia

Polyfluoroalkyl chemicals (PFCs) have been used worldwide for more than 50 years in a wide variety of industrial and consumer products. Limited data exist on human exposure to PFCs in the Southern Hemisphere. Human blood serum collected in southeast Queensland, Australia, in 2006−2007 from 2420 donors was pooled according to age (cord blood, 0−0.5, 0.6−1, 1.1−1.5, 1.6−2, 2.1−2.5, 2.6−3, 3.1−3.5, 3.6−4, 4.1−6, 6.1−9, 9.1−12, 12.1−15, 16−30, 31−45, 46−60, and >60 years) and gender and was analyzed for eight PFCs. Across all pools, perfluorooctane sulfonate (PFOS) was detected at the highest mean concentration (15.2 ng/mL) followed by perfluorooctanoate (PFOA, 6.4 ng/mL), perfluorohexane sulfonate (PFHxS, 3.1 ng/mL), perfluorononanoate (PFNA, 0.8 ng/mL), 2-(N-methyl-perfluorooctance sulfonamide) acetate (Me-PFOSA-AcOH, 0.66 ng/mL), and perfluorodecanoate (PFDeA, 0.29 ng/mL). Perfluorooctane sulfonamide was detected in only 24% of the pools, and 2-(N-ethylperfluorooctane sulfonamide) acetate was detected in only one. PFOS concentrations were significantly higher in pools from adult males than from adult females (p = 0.002); no gender differences were apparent in the pools from children (<12 years old). The highest mean concentrations of PFOA, PFHxS, PFNA, PFDeA, and Me-PFOSA-AcOH were found in children <15 years, while PFOS was highest in adults >60 years. Investigation into the sources and exposure pathways in Australia, in particular for children, is necessary as well as continued biomonitoring to determine the potential effects on human concentrations as a result of changes in the PFC manufacturing practices, including the cessation of production of several PFCs.

A preliminary investigation of the role of the Phenylalynine: Tyrosine Ratio in children with early and continuously treated phenylketonuria : toward identification of “safe” levels

Children with early and continuously treated phenylketonuria (ECT-PKU) remain at risk of developing executive function (EF) deficits. There is some evidence that a high phenylalanine to tyrosine ratio (phe:tyr) is more strongly associated with impaired EF development than high phenylalanine alone. This study examined EF in a sample of 11 adolescents against concurrent and historical levels of phenylalanine, phe:tyr, and tyrosine. Lifetime measures of phe:tyr were more strongly associated with EF than phenylalanine-only measures. Children with a lifetime phe:tyr less than 6 demonstrated normal EF, whereas children who had a lifetime phe:tyr above 6, on average, demonstrated clinically impaired EF.

GIS-based mapping and statistical analysis of air pollution and mortality in Brisbane, Australia

In this thesis, the relationship between air pollution and human health has been investigated utilising Geographic Information System (GIS) as an analysis tool. The research focused on how vehicular air pollution affects human health. The main objective of this study was to analyse the spatial variability of pollutants, taking Brisbane City in Australia as a case study, by the identification of the areas of high concentration of air pollutants and their relationship with the numbers of death caused by air pollutants. A correlation test was performed to establish the relationship between air pollution, number of deaths from respiratory disease, and total distance travelled by road vehicles in Brisbane. GIS was utilized to investigate the spatial distribution of the air pollutants. The main finding of this research is the comparison between spatial and non-spatial analysis approaches, which indicated that correlation analysis and simple buffer analysis of GIS using the average levels of air pollutants from a single monitoring station or by group of few monitoring stations is a relatively simple method for assessing the health effects of air pollution. There was a significant positive correlation between variable under consideration, and the research shows a decreasing trend of concentration of nitrogen dioxide at the Eagle Farm and Springwood sites and an increasing trend at CBD site. Statistical analysis shows that there exists a positive relationship between the level of emission and number of deaths, though the impact is not uniform as certain sections of the population are more vulnerable to exposure. Further statistical tests found that the elderly people of over 75 years age and children between 0-15 years of age are the more vulnerable people exposed to air pollution. A non-spatial approach alone may be insufficient for an appropriate evaluation of the impact of air pollutant variables and their inter-relationships. It is important to evaluate the spatial features of air pollutants before modeling the air pollution-health relationships.

Paediatric spinal deformity research at the Mater Children's Hospital, Brisbane, Australia.

The Paediatric Spine Research group was formed in 2002 to perform high quality research into the prevention and management of spinal deformity, with an emphasis on scoliosis. The group has successfully built collaborative bridges between the scientific and research expertise at QUT, and the clinical skills and experience of the spinal orthopaedic surgeons at the Mater Children’s Hospital in Brisbane. Clinical and biomechanical research is now possible as a result of the development of detailed databases of patients who have innovative and unique surgical interventions for spinal deformity such as thoracoscopic scoliosis correction, thoracoscopic staple insertion for juvenile idiopathic scoliosis and minimally invasive growing rods. The Mater in Brisbane provides these unique datasets of spinal deformity surgery patients, whose procedures are not being performed anywhere else in the Southern Hemisphere. The most detailed is a database of thoracoscopic scoliosis correction surgery which now contains 180 patients with electronic collections of X-Rays, photographs and patient questionnaires. With ethics approval, a subset of these patients has had CT scans, and a further subset have had MRI scans with and without a compressive load to simulate the erect standing position. This database has to date contributed to 17 international refereed journal papers, a further 7 journal papers either under review or in final preparation, 53 national conference presentations and 35 international conference presentations. Major findings from selected journal publications will be presented. It is anticipated that as the surgical databases grow they will continue to provide invaluable clinical data which will feed into clinically relevant projects driven by both medical and engineering researchers whose findings will benefit spinal deformity patients and scientific knowledge worldwide.

Identification of area-level influences on regions of high cancer incidence in Queensland, Australia : a classification tree approach

Background: Strategies for cancer reduction and management are targeted at both individual and area levels. Area-level strategies require careful understanding of geographic differences in cancer incidence, in particular the association with factors such as socioeconomic status, ethnicity and accessibility. This study aimed to identify the complex interplay of area-level factors associated with high area-specific incidence of Australian priority cancers using a classification and regression tree (CART) approach. Methods: Area-specific smoothed standardised incidence ratios were estimated for priority-area cancers across 478 statistical local areas in Queensland, Australia (1998-2007, n=186,075). For those cancers with significant spatial variation, CART models were used to identify whether area-level accessibility, socioeconomic status and ethnicity were associated with high area-specific incidence. Results: The accessibility of a person’s residence had the most consistent association with the risk of cancer diagnosis across the specific cancers. Many cancers were likely to have high incidence in more urban areas, although male lung cancer and cervical cancer tended to have high incidence in more remote areas. The impact of socioeconomic status and ethnicity on these associations differed by type of cancer. Conclusions: These results highlight the complex interactions between accessibility, socioeconomic status and ethnicity in determining cancer incidence risk.