Últimos itens adicionados do Acervo: Universidade de Adelaide

A Universidade de Adelaide é uma instituição de ensino superior australiana fundada em 1874. É a terceira mais antiga universidade da Austrália.

Página 11 dos resultados de 89931 itens digitais encontrados em 0.018 segundos

Electrocatalytically switchable CO₂ capture: first principle computational exploration of carbon nanotubes with pyridinic nitrogen; Electrocatalytically switchable CO(2) capture: first principle computational exploration of carbon nanotubes with pyridinic nitrogen

Jiao, Y.; Zheng, Y.; Smith, S.C.; Du, A.; Zhu, Z.
Fonte: Wiley Publicador: Wiley
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Carbon nanotubes with specific nitrogen doping are proposed for controllable, highly selective, and reversible CO2 capture. Using density functional theory incorporating long-range dispersion corrections, we investigated the adsorption behavior of CO2 on (7,7) single-walled carbon nanotubes (CNTs) with several nitrogen doping configurations and varying charge states. Pyridinic-nitrogen incorporation in CNTs is found to induce an increasing CO2 adsorption strength with electron injecting, leading to a highly selective CO2 adsorption in comparison with N2 . This functionality could induce intrinsically reversible CO2 adsorption as capture/release can be controlled by switching the charge carrying state of the system on/off. This phenomenon is verified for a number of different models and theoretical methods, with clear ramifications for the possibility of implementation with a broader class of graphene-based materials. A scheme for the implementation of this remarkable reversible electrocatalytic CO2 -capture phenomenon is considered.; Yan Jiao, Yao Zheng, Sean C. Smith, Aijun Du, Zhonghua Zhu

Implications for Indonesia of Asia’s rise in the global economy

Anderson, K.; Strutt, A.
Fonte: Taylor and Francis Publicador: Taylor and Francis
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
This article projects Indonesia’s production and trade patterns to 2020 and 2030 in the course of global economic development under various growth and policy scenarios. We support our projections of the global economy by employing the Global Trade Analysis Project (GTAP) model and version 8.1 of the GTAP database, along with supplementary data from a range of sources. Our baseline projection assumes that trade-related policies do not change in each region, but that endowments and real GDP do change, at exogenously selected rates. We use this baseline and its assumptions to analyse how potential global changes may affect the Indonesian economy over this and the next decade. We then consider the potential impacts of three policy reforms by 2020: an increase in global rice exports, associated with the opening of Myanmar; the recently imposed export taxes in Indonesia on unprocessed primary products; and the implementation of Indonesia’s new food law.; Kym Anderson, Anna Strutt

Derivation of pediatric within-individual biological variation by indirect sampling method: an LMS approach

Loh, T.P.; Ranieri, E.; Metz, M.P.
Fonte: American Society for Clinical Pathology Publicador: American Society for Clinical Pathology
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
OBJECTIVES: Pediatric within-individual biological variation (CVi) is a challenge to derive by direct sampling due to clinical, logistical, and ethical barriers. METHODS: Laboratory results of 22 basic biochemistry tests performed on 9,356 children who visited primary care physicians more than once over a year were obtained from a large laboratory network in Australia. The CVi were calculated as (CVT (2) - CVa (2))(0.5), where CVT was the coefficient of variation between repeat measurements and CVa was the analytical imprecision. Smoothed 50th centile (median) CVi charts were derived using the LMS ChartMaker Light software (Medical Research Council, Cambridge, England) with L, M, and S parameters fixed at 3.0, 3.0, and 3.0 equivalent degrees of freedom, respectively. RESULTS: In general, the median CVi trends for this pediatric cohort remained relatively stable with increasing age. Only aspartate aminotransferase, globulin, phosphate, urea, and creatinine had differences between the highest and lowest median CVi of more than 30%. The differences between the child and adult CVi were relatively small. Nearly all the analytes had child to adult CVi ratios of 1.0 ± 0.5. CONCLUSIONS: The median CVi derived from patients with only two repeat biochemistry measurements may be considered reasonable estimates of CVi among children seeking treatment at primary care settings. The LMS approach allowed visualization of the continuous trends of CVi with age and extended the pediatric CVi estimation to younger than 4 years.; Tze Ping Loh...

A microbial spoilage profile of half shell Pacific oysters (Crassostrea gigas) and Sydney rock oysters (Saccostrea glomerata)

Madigan, T.L.; Bott, N.J.; Torok, V.A.; Percy, N.J.; Carragher, J.F.; Lopes, M.A.D.B.; Kiermeier, A.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Abstract not available; Thomas L. Madigan, Nathan J. Bott, Valeria A. Torok, Nigel J. Percy, John F. Carragher, Miguel A. de Barros Lopes, Andreas Kiermeier

Effect of critical illness on triglyceride absorption

Ali Abdelhamid, Y.; Cousins, C.E.; Sim, J.A.; Bellon, M.S.; Nguyen, N.Q.; Horowitz, M.; Chapman, M.J.; Deane, A.M.
Fonte: SAGE Publications Publicador: SAGE Publications
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Adequate nutrition support for critically ill patients optimizes outcome, and enteral feeding is the preferred route of nutrition. Small intestinal glucose absorption is frequently impaired in critical illness. Despite lipid being a major constituent of liquid nutrient administered, there is little information about lipid absorption during critical illness.To determine small intestinal lipid, as well as glucose, absorption in critical illness compared with health.Twenty-nine mechanically ventilated critically ill patients and 16 healthy volunteers were studied. Liquid nutrient (60 mL, 1 kcal/mL), containing 200 µL ¹³C-triolein and 3 g 3-O-methyl-glucose (3-OMG), was infused directly into the duodenum at a rate of 2 kcal/min. Exhaled ¹³CO₂ and serum 3-OMG concentrations were measured at timed intervals over 360 minutes. Lipid absorption was measured as the cumulative percentage dose (cPDR) of ¹³CO₂ recovered at 360 minutes. Glucose absorption was measured as the area under the 3-OMG concentration curve. Data are median (range) and analyzed using the Mann-Whitney U and Pearson correlation tests.Lipid absorption was markedly less in the critically ill (cPDR¹³CO₂: patients, 22.6% [0%-100%] vs healthy participants, 40.7% [5.3%-84.7%]; P = .018). While glucose absorption was less at 60 minutes in the critically ill (3-OMG60: 13.2 [3.5-29.5] vs 21.1 [9.3-31.9] mmol/L·min; P = .003)...

Simplified method for estimating the Hoek-Brown constant for intact rocks

Shen, J.; Karakus, M.
Fonte: American Society of Civil Engineers Publicador: American Society of Civil Engineers
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Abstract not available; Jiayi Shen and Murat Karakus; Published: 19 March 2014

Fine-scale diet of the Australian sea lion (Neophoca cinerea) using DNA-based analysis of faeces

Peters, K.J.; Ophelkeller, K.; Bott, N.J.; Deagle, B.E.; Jarman, S.N.; Goldsworthy, S.D.
Fonte: Wiley Publicador: Wiley
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
We applied DNA-based faecal analysis to determine the diet of female Australian sea lions (n = 12) from two breeding colonies in South Australia. DNA dietary components of fish and cephalopods were amplified using the polymerase chain reaction and mitochondrial DNA primers targeting the short (~100 base pair) section of the 16S gene region. Prey diversity was determined by sequencing ~50 amplicons generated from clone libraries developed for each individual. Faecal DNA was also combined and cloned from multiple individuals at each colony and fish diversity determined. Diets varied between individuals and sites. Overall, DNA analysis identified a broad diversity of prey comprising 23 fish and five cephalopod taxa, including many species not previously described as prey of the Australian sea lion. Labridae (wrasse), Monacanthidae (leatherjackets) and Mullidae (goat fish) were important fish prey taxa. Commonly identified cephalopods were Octopodidae (octopus), Loliginidae (calamary squid) and Sepiidae (cuttlefish). Comparisons of fish prey diversity determined by pooling faecal DNA from several samples provided a reasonable but incomplete resemblance (55–71%) to the total fish diversity identified across individual diets at each site. Interpretation of diet based on the recovery of prey hard-parts identified one cephalopod beak (Octopus sp.) and one fish otolith (Parapriacanthus elongatus). The present study highlights the value of DNA-based analyses and their capabilities to enhance information of trophic interactions.; Kristian J. Peters...

Slow migration of mobilised fines during flow in reservoir rocks: laboratory study

Oliveira, M.A.; Vaz, A.S.L.; Siqueira, F.D.; Yang, Y.; You, Z.; Bedrikovetsky, P.
Fonte: ElsevierB.V. Publicador: ElsevierB.V.
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Abstract not available; Maira A. Oliveira, Alexandre S.L. Vaz, Fernando D. Siqueira, Yulong Yang, Zhenjiang You, Pavel Bedrikovetsky

The role of protein in weight loss and maintenance

Leidy, H.J.; Clifton, P.M.; Astrup, A.; Wycherley, T.P.; Westerterp-Plantenga, M.S.; Luscombe-Marsh, N.D.; Woods, S.C.; Mattes, R.D.
Fonte: American Society for Nutrition Publicador: American Society for Nutrition
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Over the past 20 y, higher-protein diets have been touted as a successful strategy to prevent or treat obesity through improvements in body weight management. These improvements are thought to be due, in part, to modulations in energy metabolism, appetite, and energy intake. Recent evidence also supports higher-protein diets for improvements in cardiometabolic risk factors. This article provides an overview of the literature that explores the mechanisms of action after acute protein consumption and the clinical health outcomes after consumption of long-term, higher-protein diets. Several meta-analyses of shorter-term, tightly controlled feeding studies showed greater weight loss, fat mass loss, and preservation of lean mass after higher-protein energy-restriction diets than after lower-protein energy-restriction diets. Reductions in triglycerides, blood pressure, and waist circumference were also reported. In addition, a review of the acute feeding trials confirms a modest satiety effect, including greater perceived fullness and elevated satiety hormones after higher-protein meals but does not support an effect on energy intake at the next eating occasion. Although shorter-term, tightly controlled feeding studies consistently identified benefits with increased protein consumption...

Population structure and genetic diversity of the black-footed rock-wallaby (Petrogale lateralis MacDonnell Ranges race)

Ruykys, L.; Lancaster, M.L.
Fonte: CSIRO Publishing Publicador: CSIRO Publishing
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Genetic diversity is a critical determinant of the persistence of populations because it enables animals to evolve and adapt to environmental change. Black-footed rock-wallabies (Petrogale lateralis MacDonnell Ranges race), or warru, once occupied virtually all suitable habitat within the arid zone of central Australia. However, only two metapopulations now remain in the southern portion of this race’s range (South Australia) and a recovery program has involved both in- and ex-situ conservation initiatives. To establish whether genetic factors such as inbreeding may be inhibiting population recovery, the current study examined the population structure and genetic diversity of animals in the three largest-known extant colonies using six polymorphic microsatellite loci. Bayesian and frequency-based assignment tests revealed substantial population structuring (pairwise FST values 0.122–0.278), congruent with geographically distinct colonies. There was some evidence of dispersal, with two migrants identified across two colonies, but little evidence for extensive interbreeding among colonies. Population substructure was evidenced by high values of FIS in one colony. All populations possessed relatively high levels of genetic diversity (allelic richness: 5.1–7.5...

Annotation of gene function in citrus using gene expression information and co-expression networks

Wong, D.C.J.; Sweetman, C.; Ford, C.M.
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
BACKGROUND: The genus Citrus encompasses major cultivated plants such as sweet orange, mandarin, lemon and grapefruit, among the world's most economically important fruit crops. With increasing volumes of transcriptomics data available for these species, Gene Co-expression Network (GCN) analysis is a viable option for predicting gene function at a genome-wide scale. GCN analysis is based on a "guilt-by-association" principle whereby genes encoding proteins involved in similar and/or related biological processes may exhibit similar expression patterns across diverse sets of experimental conditions. While bioinformatics resources such as GCN analysis are widely available for efficient gene function prediction in model plant species including Arabidopsis, soybean and rice, in citrus these tools are not yet developed. RESULTS: We have constructed a comprehensive GCN for citrus inferred from 297 publicly available Affymetrix Genechip Citrus Genome microarray datasets, providing gene co-expression relationships at a genome-wide scale (33,000 transcripts). The comprehensive citrus GCN consists of a global GCN (condition-independent) and four condition-dependent GCNs that survey the sweet orange species only, all citrus fruit tissues, all citrus leaf tissues...

Vitamin D is independently associated with depression in overweight women with and without PCOS

Moran, L.J.; Teede, H.J.; Vincent, A.J.
Fonte: Taylor & Francis Publicador: Taylor & Francis
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Background: Depression, anxiety, and inflammation are common in polycystic ovary syndrome (PCOS). Inflammation may adversely impact on mood and vitamin D has been associated with both mood disorders and inflammation in the general population, but these relationships have not been studied in PCOS. The aim of this study was to investigate the association among 25 hydroxy-Vitamin D (25OHVD) status, anxiety, depression, and inflammation in women with and without PCOS. Methods: Cross-sectional study in overweight or obese premenopausal women with (n = 50) and without (n = 23) PCOS. Primary outcome measures were 25OHVD, mood (Hospital Anxiety and Depression questionnaire), and inflammation (highly sensitive C-reactive protein (hsCRP)). Results: Vitamin D deficiency (25OHVD<50 nmol/L) (46% versus 39%, p = 0.311) and 25OHVD (50.4 ± 22.2 nmol/L versus 51.6 ± 19.0 nmol/L, p = 0.828) were not significantly different in women with and without PCOS. For all women combined, 25OHVD was the only significant independent predictor of depression (β = −0.063 ± 0.021, p = 0.005) and hsCRP (β = −0.041 ± 0.015, p = 0.010). Conclusions: Vitamin D deficiency is common in both women with and without PCOS with no differences between the groups. Vitamin D is independently associated with depression and inflammation in overweight women both with and without PCOS. Further investigation to clarify the interrelationship among vitamin D...

Crustal thickening and clay: controls on O isotope variation in global magmatism and siliclastic sedimentary rocks

Payne, J.L.; Hand, M.; Pearson, N.J.; Barovich, K.M.; McInerney, D.J.
Fonte: Elsevier B.V. Publicador: Elsevier B.V.
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Abstract not available; Justin L. Payne, Martin Hand, Norman J. Pearson, Karin M. Barovich, David J. McInerne

Open approaches to the aorta in the endovascular era

Fitridge, R.
Fonte: Blackwell Science Asia Publicador: Blackwell Science Asia
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Robert Fitridge

Three-dimensional streamline-based simulation of non-isothermal two-phase flow in heterogeneous porous media

Siavashi, M.; Blunt, M.J.; Raisee, M.; Pourafshary, P.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Abstract not available; Majid Siavashi, Martin J. Blunt, Mehrdad Raisee, Peyman Pourafshary

Male labour migration, spousal communication, and STI treatment in Armenia

Sevoyan, A.; Agadjanian, V.
Fonte: Taylor and Francis Publicador: Taylor and Francis
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
This study aims to add to the scant research on the association between labour migration and sexually transmitted infections (STIs). It builds upon earlier findings suggesting that left-behind migrants' wives tend to have higher risks of contracting STIs than women married to non-migrants. Using data from a 2007 survey in rural Armenia, a post-Soviet patriarchal setting with high levels of seasonal male migration and high rates of STIs, we examine how migration influences spousal communication about STIs, and how this communication, in turn, affects women's use of medical care for STI-like symptoms. The results of random-intercept logistic regression models show that migrants' wives were significantly more likely to talk about STI-related risks with their husbands than were non-migrants' wives. However, among women reporting STI-like symptoms in 12 months before the survey, migrants' wives were less likely to have talked to their husbands about these symptoms. We also find that women married to migrants were less likely to seek professional care for their STI-like symptoms than those married to non-migrants, but this association was moderated by women's communication about these symptoms with their spouses.; Arusyak Sevoyan and Victor Agadjanian

Isogeometric analysis: an overview and computer implementation aspects

Vinh, P.N.; Anitescu, C.; Bordas, S.P.A.; Rabczuk, T.
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Abstract not available.; Vinh Phu Nguyen, Cosmin Anitescu, Stéphane P.A. Bordas, Timon Rabczuk

Incretins and the intensivist: what are they and what does an intensivist need to know about them?

Plummer, M.P.; Chapman, M.J.; Horowitz, M.; Deane, A.M.
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
Hyperglycaemia occurs frequently in the critically ill, even in those patients without a history of diabetes. The mechanisms underlying hyperglycaemia in this group are complex and incompletely defined. In health, the gastrointestinal tract is an important modulator of postprandial glycaemic excursions and both the rate of gastric emptying and the so-called incretin hormones, glucagon-like peptide-1 and glucose-dependent insulinotropic polypeptide, are pivotal determinants of postprandial glycaemia. Incretin-based therapies (that is, glucagon-like peptide- 1 agonists and dipeptidyl-peptidase-4 inhibitors) have recently been incorporated into standard algorithms for the management of hyperglycaemia in ambulant patients with type 2 diabetes and, inevitably, an increasing number of patients who were receiving these classes of drugs prior to their acute illness will present to ICUs. This paper summarises current knowledge of the incretin effect as well as the incretin-based therapies that are available for the management of type 2 diabetes, and provides suggestions for the potential relevance of these agents in the management of dysglycaemia in the critically ill, particularly to normalise elevated blood glucose levels.; Mark P Plummer...

Predicting channel bed topography in hydraulic falls

Tam, A.; Yu, Z.; Kelso, R.M.; Binder, B.J.
Fonte: AIP Publishing Publicador: AIP Publishing
Tipo: Artigo de Revista Científica
Publicado em //2015 EN
Abstract not available.; Alexander Tam, Zheng Yu, Richard M. Kelso and Benjamin J. Binder

Weight loss in pregnancy and cardiometabolic profile in childhood: findings from a longitudinal birth cohort

Grooten, I.; Painter, R.; Pontesilli, M.; van der Post, J.; Mol, B.; van Eijsden, M.; Vrijkotte, T.; Roseboom, T.
Fonte: Wiley Publicador: Wiley
Tipo: Artigo de Revista Científica
Publicado em //2014 EN
To investigate the consequences of weight loss in pregnancy on pregnancy outcomes and cardiometabolic profile in childhood.Prospective birth cohort (ABCD study).Between 2003 and 2004, all pregnant women in Amsterdam were approached for study participation.7818 pregnant women were included, of which 3165 consented to having their children examined at 5-6 years of age. In 1956 children fasting capillary blood samples were also taken.At antenatal booking, women answered questions about their pregnancy and whether they suffered from severe weight loss (SWL; >5 kg). Pregnancy details and outcomes were available through the obstetric caregiver.At birth main outcome measures were prematurity (<37 weeks) and birthweight. At follow-up, body mass index (BMI), blood pressure, glucose and lipids were assessed.SWL occurred in 6.8% of cases. Women with SWL had similar preterm birth rates compared with women without these complaints (adjusted OR 1.1, 95%CI 0.7, 1.7). Birthweight (adjusted difference - 31 g, 95%CI -76, 15) and BMI at 5-6 years of age (adjusted difference 0.2 kg/m(2) , 95%CI 0.0, 0.5) were similar in children born to mothers with SWL and without SWL, but blood pressure was increased. For diastolic blood pressure this association was independent of confounders (adjusted difference 1.4 mmHg...