| 1. |
- Ademuyiwa, Adesoji O., et al.
(författare)
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Determinants of morbidity and mortality following emergency abdominal surgery in children in low-income and middle-income countries
- 2016
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Ingår i: BMJ Global Health. - : BMJ Publishing Group Ltd. - 2059-7908. ; 1:4
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Tidskriftsartikel (refereegranskat)abstract
- Background: Child health is a key priority on the global health agenda, yet the provision of essential and emergency surgery in children is patchy in resource-poor regions. This study was aimed to determine the mortality risk for emergency abdominal paediatric surgery in low-income countries globally.Methods: Multicentre, international, prospective, cohort study. Self-selected surgical units performing emergency abdominal surgery submitted prespecified data for consecutive children aged <16 years during a 2-week period between July and December 2014. The United Nation's Human Development Index (HDI) was used to stratify countries. The main outcome measure was 30-day postoperative mortality, analysed by multilevel logistic regression.Results: This study included 1409 patients from 253 centres in 43 countries; 282 children were under 2 years of age. Among them, 265 (18.8%) were from low-HDI, 450 (31.9%) from middle-HDI and 694 (49.3%) from high-HDI countries. The most common operations performed were appendectomy, small bowel resection, pyloromyotomy and correction of intussusception. After adjustment for patient and hospital risk factors, child mortality at 30 days was significantly higher in low-HDI (adjusted OR 7.14 (95% CI 2.52 to 20.23), p<0.001) and middle-HDI (4.42 (1.44 to 13.56), p=0.009) countries compared with high-HDI countries, translating to 40 excess deaths per 1000 procedures performed.Conclusions: Adjusted mortality in children following emergency abdominal surgery may be as high as 7 times greater in low-HDI and middle-HDI countries compared with high-HDI countries. Effective provision of emergency essential surgery should be a key priority for global child health agendas.
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| 2. |
- Carleo, Ilaria, et al.
(författare)
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The Multiplanet System TOI-421*
- 2020
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Ingår i: Astronomical Journal. - : American Astronomical Society. - 1538-3881 .- 0004-6256. ; 160:3
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Tidskriftsartikel (refereegranskat)abstract
- We report the discovery of a warm Neptune and a hot sub-Neptune transiting TOI-421 (BD-14 1137, TIC 94986319), a bright (V = 9.9) G9 dwarf star in a visual binary system observed by the Transiting Exoplanet Survey Satellite (TESS) space mission in Sectors 5 and 6. We performed ground-based follow-up observations-comprised of Las Cumbres Observatory Global Telescope transit photometry, NIRC2 adaptive optics imaging, and FIbre-fed Echelle Spectrograph, CORALIE, High Accuracy Radial velocity Planet Searcher, High Resolution echelle Spectrometer, and Planet Finder Spectrograph high-precision Doppler measurements-and confirmed the planetary nature of the 16 day transiting candidate announced by the TESS team. We discovered an additional radial velocity signal with a period of five days induced by the presence of a second planet in the system, which we also found to transit its host star. We found that the inner mini-Neptune, TOI-421 b, has an orbital period of P-b = 5.19672 +/- 0.00049 days, a mass of M-b = 7.17 +/- 0.66 M-circle plus, and a radius of R-b = R-circle plus, whereas the outer warm Neptune, TOI-421 c, has a period of P-c = 16.06819 +/- 0.00035 days, a mass of M-c = 16.42(-1.04)(+1.06)M(circle plus), a radius of R-c = 5.09(-0.15)(+0.16)R(circle plus), and a density of rho(c) = 0.685(-0.072)(+0.080) cm(-3). With its characteristics, the outer planet (rho(c) = 0.685(-0.0072)(+0.080) cm(-3)) is placed in the intriguing class of the super-puffy mini-Neptunes. TOI-421 b and TOI-421 c are found to be well-suited for atmospheric characterization. Our atmospheric simulations predict significant Ly alpha transit absorption, due to strong hydrogen escape in both planets, as well as the presence of detectable CH4 in the atmosphere of TOI-421 c if equilibrium chemistry is assumed.
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| 3. |
- Sodergren, Erica, et al.
(författare)
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The genome of the sea urchin Strongylocentrotus purpuratus.
- 2006
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Ingår i: Science. - : American Association for the Advancement of Science (AAAS). - 1095-9203 .- 0036-8075. ; 314:5801, s. 941-52
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Tidskriftsartikel (refereegranskat)abstract
- We report the sequence and analysis of the 814-megabase genome of the sea urchin Strongylocentrotus purpuratus, a model for developmental and systems biology. The sequencing strategy combined whole-genome shotgun and bacterial artificial chromosome (BAC) sequences. This use of BAC clones, aided by a pooling strategy, overcame difficulties associated with high heterozygosity of the genome. The genome encodes about 23,300 genes, including many previously thought to be vertebrate innovations or known only outside the deuterostomes. This echinoderm genome provides an evolutionary outgroup for the chordates and yields insights into the evolution of deuterostomes.
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| 4. |
- Crossfield, Ian J. M., et al.
(författare)
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197 CANDIDATES AND 104 VALIDATED PLANETS IN K2's FIRST FIVE FIELDS
- 2016
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Ingår i: Astrophysical Journal Supplement Series. - : American Astronomical Society. - 0067-0049 .- 1538-4365. ; 226:1
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Tidskriftsartikel (refereegranskat)abstract
- We present 197 planet candidates discovered using data from the first year of the NASA K2 mission (Campaigns 0-4), along with the results of an intensive program of photometric analyses, stellar spectroscopy, high-resolution imaging, and statistical validation. We distill these candidates into sets of 104 validated planets (57 in multi-planet systems), 30 false positives, and 63 remaining candidates. Our validated systems span a range of properties, with median values of R-P = 2.3 R-circle plus, P = 8.6 days, T-eff = 5300 K, and Kp = 12.7 mag. Stellar spectroscopy provides precise stellar and planetary parameters for most of these systems. We show that K2 has increased by 30% the number of small planets known to orbit moderately bright stars (1-4 R-circle plus, Kp = 9-13. mag). Of particular interest are 76 planets smaller than 2 R-circle plus, 15 orbiting stars brighter than Kp = 11.5. mag, 5 receiving Earth-like irradiation levels, and several multi-planet systems-including 4 planets orbiting the M dwarf K2-72 near mean-motion resonances. By quantifying the likelihood that each candidate is a planet we demonstrate that our candidate sample has an overall false positive rate of 15%-30%, with rates substantially lower for small candidates (<2 R-circle plus) and larger for candidates with radii >8 R-circle plus and/or with P < 3 days. Extrapolation of the current planetary yield suggests that K2 will discover between 500 and 1000 planets in its planned four-year mission, assuming sufficient follow-up resources are available. Efficient observing and analysis, together with an organized and coherent follow-up strategy, are essential for maximizing the efficacy of planet-validation efforts for K2, TESS, and future large-scale surveys.
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| 5. |
- Jiang, Heng, et al.
(författare)
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The effects of alcohol pricing policies on consumption, health, social and economic outcomes, and health inequality in Australia : a protocol of an epidemiological modelling study
- 2019
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 9:6
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Tidskriftsartikel (refereegranskat)abstract
- Introduction Alcohol use and misuse are associated with substantial health and social issues in Australia and internationally. Pricing policy is considered as one of the most effective means to reduce risky drinking and related harms. This protocol paper describes a study that will model and estimate the effects, effectiveness and cost-benefit of alcohol pricing policy initiatives in reducing risky drinking, health and social harms, and health inequalities among subpopulations in Australia.Methods and analysis The study is a modelling and epidemiological study using data from various resources, such as survey, previous literatures and response agencies. A number of statistical procedures will be undertaken to evaluate the impact of different alcohol pricing policy initiatives on various outcomes, including alcohol consumption in population subgroups, and health and social problems, and to measure health inequalities and cost-effectiveness of those proposed pricing policies, such as a 10% tax increase on all alcohol beverages or introduction of a minimum unit price.Ethics and dissemination The ethics approval of this study was obtained from the College Human Ethics Sub-Committee of the La Trobe University on 9 November 2017 (Ref: S17-206). While examining the heterogeneous effects of price policy across population subgroups, this study will provide the first comprehensive estimates of the likely impacts of alcohol price changes on health inequalities. The study will also provide sophisticated economic analyses of the impact of price policy changes, which is critical information for policy makers and will assist policy makers in directing resources to a more efficient alcohol strategy. Results will be made available to communities and societies, health departments and other researchers.
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| 6. |
- Savic, Michael, et al.
(författare)
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Defining drinking culture : A critical review of its meaning and connotation in social research on alcohol problems
- 2016
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Ingår i: Drugs. - : Informa UK Limited. - 0968-7637 .- 1465-3370. ; 23:4, s. 270-282
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Forskningsöversikt (refereegranskat)abstract
- There has been growing academic interest in drinking cultures as targets of investigation and intervention, driven often by policy discourse about changing the drinking culture. In this article, we conduct a critical review of the alcohol research literature to examine how the concept of drinking culture has been understood and employed, particularly in work that views alcohol through a problem lens. Much of the alcohol research discussion on drinking culture has focussed on national drinking cultures in which the cultural entity of concern is the nation or society as a whole (macro-level). In this respect, there has been a comparative tradition concerned with categorising drinking cultures into typologies (e.g. wet and dry cultures). Although overtly focused on patterns of drinking and problems at the macro-level, this tradition also points to a multifaceted understanding of drinking cultures. Even though norms about drinking are not uniform within and across countries there has been relatively less focus in the alcohol research literature on cultural entities below the level of the culture as a whole (micro-level). We conclude by offering a working definition, which underscores the multidimensional and interactive nature of the drinking culture concept.
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| 7. |
- Subjak, Jan, et al.
(författare)
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TOI-503: The First Known Brown-dwarf Am-star Binary from the TESS Mission
- 2020
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Ingår i: Astronomical Journal. - : American Astronomical Society. - 1538-3881 .- 0004-6256. ; 159:4
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Tidskriftsartikel (refereegranskat)abstract
- We report the discovery of an intermediate-mass transiting brown dwarf (BD), TOI-503b, from the TESS mission. TOI-503b is the first BD discovered by TESS, and it has circular orbit around a metallic-line A-type star with a period of P.=.3.6772.+/-.0.0001 days. The light curve from TESS indicates that TOI-503b transits its host star in a grazing manner, which limits the precision with which we measure the BD's radius ( = R 1.34+ R b 0.150.26 J). We obtained highresolution spectroscopic observations with the FIES, Ondr.ejov, PARAS, Tautenburg, and TRES spectrographs, and measured the mass of TOI-503b to be Mb.=.53.7.+/-.1.2 MJ. The host star has a mass of Ma.=.1.80.+/-.0.06Me, a radius of Ra.=.1.70.+/-.0.05Re, an effective temperature of Teff.=.7650.+/-.160 K, and a relatively high metallicity of 0.61.+/-.0.07 dex. We used stellar isochrones to derive the age of the system to be 180 Myr, which places its age between that of RIK 72b (a 10 Myr old BD in the Upper Scorpius stellar association) and AD 3116b (a 600 Myr old BD in the Praesepe cluster). Given the difficulty in measuring the tidal interactions between BDs and their host stars, we cannot precisely say whether this BD formed in situ or has had its orbit circularized by its host star over the relatively short age of the system. Instead, we offer an examination of plausible values for the tidal quality factor for the star and BD. TOI-503b joins a growing number of known short-period, intermediate-mass BDs orbiting mainsequence stars, and is the second such BD known to transit an A star, after HATS-70b. With the growth in the population in this regime, the driest region in the BD desert (35-55MJ sin i) is reforesting.
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| 8. |
- Atkinson, Jo-An, et al.
(författare)
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Harnessing advances in computer simulation to inform policy and planning to reduce alcohol-related harms
- 2018
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Ingår i: International Journal of Public Health. - : Springer Science and Business Media LLC. - 1661-8556 .- 1661-8564. ; 63:4, s. 537-546
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Tidskriftsartikel (refereegranskat)abstract
- Alcohol misuse is a complex systemic problem. The aim of this study was to explore the feasibility of using a transparent and participatory agent-based modelling approach to develop a robust decision support tool to test alcohol policy scenarios before they are implemented in the real world. A consortium of Australia's leading alcohol experts was engaged to collaboratively develop an agent-based model of alcohol consumption behaviour and related harms. As a case study, four policy scenarios were examined. A 19.5 +/- 2.5% reduction in acute alcohol-related harms was estimated with the implementation of a 3 a.m. licensed venue closing time plus 1 a.m. lockout; and a 9 +/- 2.6% reduction in incidence was estimated with expansion of treatment services to reach 20% of heavy drinkers. Combining the two scenarios produced a 33.3 +/- 2.7% reduction in the incidence of acute alcohol-related harms, suggesting a synergistic effect. This study demonstrates the feasibility of participatory development of a contextually relevant computer simulation model of alcohol-related harms and highlights the value of the approach in identifying potential policy responses that best leverage limited resources.
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| 9. |
- Babor, Thomas F., et al.
(författare)
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Alcohol : No Ordinary Commodity - a summary of the third edition
- 2022
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Ingår i: Addiction. - : NLM (Medline). - 0965-2140 .- 1360-0443. ; 117:12, s. 3024-3036
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Tidskriftsartikel (refereegranskat)abstract
- Background and Aims: This article summarizes the findings and conclusions of the third edition of Alcohol: No Ordinary Commodity. The latest revision of this book is part of a series of monographs designed to provide a critical review of the scientific evidence related to alcohol control policy from a public health perspective.Design: A narrative summary of the contents of the book according to five major issues.Findings: An extensive amount of epidemiological evidence shows that alcohol is a major contributor to the global burden of disease, disability and death in high-, middle- and low-income countries. Trends in alcohol products and marketing are described, indicating that a large part of the global industry has been consolidated into a small number of transnational corporations that are expanding their operations in Asia, Africa and Latin America. The main part of the book is devoted to a review of strategies and interventions designed to prevent or minimize alcohol-related harm. Overall, the most effective strategies to protect public health are taxation that decreases affordability and restrictions on the physical availability of alcohol. A total ban on alcohol marketing is also an effective strategy to reduce consumption. In addition, drink-driving counter-measures, brief interventions with at-risk drinkers and treatment of drinkers with alcohol dependence are effective in preventing harm in high-risk contexts and groups of hazardous drinkers.Conclusion: Alcohol policy is often the product of competing interests, values and ideologies, with the evidence suggesting that the conflicting interests between profit and health mean that working in partnership with the alcohol industry is likely to lead to ineffective policy. Opportunities for implementation of evidence-based alcohol policies that better serve the public good are clearer than ever before as a result of accumulating knowledge on which strategies work best.
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| 10. |
- Babor, Thomas F., et al.
(författare)
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Alcohol : No Ordinary Commodity - A Summary of the Third Edition
- 2023
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Ingår i: SUCHT. - 0939-5911 .- 1664-2856. ; 69:4, s. 147-162
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Tidskriftsartikel (refereegranskat)abstract
- Background and Aims: This article summarizes the findings and conclusions of the third edition of Alcohol: No Ordinary Commodity. The latest revision of this book is part of a series of monographs designed to provide a critical review of the scientific evidence related to alcohol control policy from a public health perspective. Design: A narrative summary of the contents of the book according to five major issues. Findings: An extensive amount of epidemiological evidence shows that alcohol is a major contributor to the global burden of disease, disability and death in high-, middle- and low-income countries. Trends in alcohol products and marketing are described, indicating that a large part of the global industry has been consolidated into a small number of transnational corporations that are expanding their operations in Asia, Africa and Latin America. The main part of the book is devoted to a review of strategies and interventions designed to prevent or minimize alcohol-related harm. Overall, the most effective strategies to protect public health are taxation that decreases affordability and restrictions on the physical availability of alcohol. A total ban on alcohol marketing is also an effective strategy to reduce consumption. In addition, drink-driving counter-measures, brief interventions with at-risk drinkers and treatment of drinkers with alcohol dependence are effective in preventing harm in high-risk contexts and groups of hazardous drinkers. Conclusion: Alcohol policy is often the product of competing interests, values and ideologies, with the evidence suggesting that the conflicting interests between profit and health mean that working in partnership with the alcohol industry is likely to lead to ineffective policy. Opportunities for implementation of evidence-based alcohol policies that better serve the public good are clearer than ever before as a result of accumulating knowledge on which strategies work best.
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