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https://www.readbyqxmd.com/read/28812604/stand-age-and-species-richness-dampen-interannual-variation-of-ecosystem-level-photosynthetic-capacity
#1
Talie Musavi, Mirco Migliavacca, Markus Reichstein, Jens Kattge, Christian Wirth, T Andrew Black, Ivan Janssens, Alexander Knohl, Denis Loustau, Olivier Roupsard, Andrej Varlagin, Serge Rambal, Alessandro Cescatti, Damiano Gianelle, Hiroaki Kondo, Rijan Tamrakar, Miguel D Mahecha
The total uptake of carbon dioxide by ecosystems via photosynthesis (gross primary productivity, GPP) is the largest flux in the global carbon cycle. A key ecosystem functional property determining GPP is the photosynthetic capacity at light saturation (GPPsat), and its interannual variability (IAV) is propagated to the net land-atmosphere exchange of CO2. Given the importance of understanding the IAV in CO2 fluxes for improving the predictability of the global carbon cycle, we have tested a range of alternative hypotheses to identify potential drivers of the magnitude of IAV in GPPsat in forest ecosystems...
January 23, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28810970/completion-of-a-veteran-focused-civic-service-program-improves-health-and-psychosocial-outcomes-in-iraq-and-afghanistan-veterans-with-a-history-of-traumatic-brain-injury
#2
Karen A Lawrence, Monica M Matthieu, Emma Robertson-Blackmore
INTRODUCTION: Volunteering as a health promotion intervention is positively related to improved health and well-being in civilians and older adults. Yet, the impacts of participating in a community-based volunteering program on returning military veterans have not been studied, nor have the outcomes for veterans who have experienced a traumatic brain injury (TBI). MATERIALS AND METHODS: This observational, pre-post survey examines health, psychological, and social outcomes from a cohort of post-9/11/01 veterans with (N = 67) and without a reported TBI history (N = 273) who completed a 6-month, 20-hour per week veteran-focused civic service program...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810939/roadway-aggression-among-drivers-and-passengers-with-or-without-a-history-of-traumatic-brain-injury
#3
Gabriela Ilie, Christine Wickens, Robert Mann, Anca Ialomiteanu, Edward Adlaf, Hayley Hamilton, Mark Asbridge, Jürgen Rehm, Michael Cusimano
OBJECTIVE: This study examined the association between roadway aggression and traumatic brain injury (TBI) among drivers and passengers who reside in the province of Ontario, Canada. METHODS: Data were based on a 3-year cumulated cross-sectional sample of 6,048 adults aged 18 years and older who were surveyed by telephone. The outcome in this study was road rage in the form of verbal/gestural or physical aggression toward other road users and/or their vehicle. RESULTS: Driving status, history of TBI, age, gender, education, and the interaction between history of TBI and education significantly predicted roadway aggression...
August 15, 2017: Violence and Victims
https://www.readbyqxmd.com/read/28806279/ce-can-your-older-patients-drive-safely
#4
Loren Staplin, Kathy H Lococo, Tia Mastromatto, Kathy J Sifrit, Kathleen M Trazzera
A review of the functional impairments and situations that put older drivers at risk. ABSTRACT: In many areas of the world, driving is an essential part of life and for reasons of comfort, convenience, and security remains the primary mode of transportation among older adults. Both normal aging and diseases that are more prevalent in advanced age can substantially reduce older drivers' functional abilities, elevating their risk of involvement in motor vehicle accidents and serious injury or death...
August 10, 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/28804674/systematic-differences-in-hiv-syphilis-and-risk-behaviors-among-street-based-and-establishment-based-female-sex-workers-in-kathmandu-valley-of-nepal
#5
Sampurna Kakchapati, Tarun Paudel, Manju Maharjan, Apiradee Lim
BACKGROUND: Female Sex Workers (FSWs) are main drivers of the HIV epidemic in Nepal. The work environment of sex work in Nepal is differentiated into establishment based (e.g. massage parlors, dance restaurants, hotels and lodges) and street based (e.g. streets, parks and markets). The study compares HIV, syphilis and risk behaviours among establishment-based FSWs and street-based FSWs in Kathmandu Valley of Nepal. MATERIALS AND METHODS: Cross-sectional bio-behavioral surveys in 2006, 2008, 2011 and 2015 aimed to sample 2093 FSWs using two stage cluster sampling in the Kathmandu valley...
December 2016: Nepal journal of epidemiology
https://www.readbyqxmd.com/read/28801408/a-cross-sectional-study-of-travel-patterns-of-older-adults-in-the-usa-during-2015-implications-for-mobility-and-traffic-safety
#6
Sijun Shen, Wilson Koech, Jing Feng, Thomas M Rice, Motao Zhu
BACKGROUND: With an ever increasing population of older adults (65+ years) in the USA, a better understanding of this population's travel patterns is needed to improve travel mobility and transportation safety. OBJECTIVE: In this study, we described the travel patterns of older adults in the USA during 2015. METHODS: Travel patterns of older adults (65-74 and 75+ years) were compared with younger adults (25-64 years) by frequency and proportion of daily trips...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28800595/elderly-road-collision-injury-outcomes-associated-with-seat-positions-and-seatbelt-use-in-a-rapidly-aging-society-a-case-study-in-south-korea
#7
Yuna Noh, Yoonjin Yoon
INTRODUCTION: Aging has long been regarded as one of the most critical factors affecting crash injury outcomes. In South Korea, where the elderly population is projected to reach 35.9% by 2050, the implications of an increasing number of elderly vehicle users on road safety are evident. In this research, the confounding effect of occupant age in a vehicle in terms of seat position and seatbelt use was investigated. In addition, elderly occupants were divided into a younger-old group aged between 65 and 74 years and an older-old group aged 75 years and older in an effort to assess whether the conventional elderly age standard of 65 years should be reconsidered...
2017: PloS One
https://www.readbyqxmd.com/read/28800027/economic-burden-of-advanced-melanoma-in-france-germany-and-the-uk-a-retrospective-observational-study-melanoma-burden-of-illness-study
#8
Florent Grange, Peter Mohr, Mark Harries, Rainer Ehness, Laure Benjamin, Obukohwo Siakpere, Janina Barth, Ceilidh Stapelkamp, Sylvie Pfersch, Lori D McLeod, James A Kaye, Sorrel Wolowacz, Ilias Kontoudis
The aim of this study was to estimate the cost-of-illness associated with completely resected stage IIIB/IIIC melanoma with macroscopic lymph node involvement, overall and by disease phase, in France, Germany and the UK. This retrospective observational study included patients aged older than or equal to 18 years first diagnosed with stage IIIB/IIIC cutaneous melanoma between 1 January 2009 and 31 December 2011. Data were obtained from medical records and a patient survey. Direct costs, indirect costs and patient out-of-pocket expenses were estimated in euros (&OV0556;) (and British pounds, £) by collecting resource use and multiplying by country-specific unit costs...
August 10, 2017: Melanoma Research
https://www.readbyqxmd.com/read/28797372/evaluation-of-the-older-driver
#9
REVIEW
Lucia Loredana Dattoma
Older adults in the United States are healthier and more active than ever before. The number of adult drivers 65 years and older is increasing rapidly. However, older drivers are involved in more fatal car incidents per miles driven than any other age group except teenagers. Driving has become very important for older adults because it is critical to their independence and self-esteem. Therefore, the role of health care providers and the interprofessional team is essential to maximizing the life expectancy of driving to match the life span and activity levels of the older adult population...
September 2017: Primary Care
https://www.readbyqxmd.com/read/28782134/gut-microbiomes-of-free-ranging-and-captive-namibian-cheetahs-diversity-putative-functions-and-occurrence-of-potential-pathogens
#10
Wasim Uddin, Sebastian Menke, Jörg Melzheimer, Susanne Thalwitzer, Sonja Heinrich, Bettina Wachter, Simone Sommer
Although the significance of the gut microbiome for host health is well acknowledged, the impact of host traits and environmental factors on the inter-individual variation of gut microbiomes of wildlife species is not well understood. Such information is essential, however, since changes in the composition of these microbial communities beyond the natural range might cause dysbiosis leading to increased susceptibility to infections. We examined the potential influence of sex, age, genetic relatedness, spatial tactics, and the environment on the natural range of the gut microbiome diversity in free-ranging Namibian cheetahs (Acinonyx jubatus)...
August 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28774803/temporal-stability-and-drivers-of-change-in-cardiac-autonomic-nervous-system-activity
#11
Mandy X Hu, Femke Lamers, Brenda W J H Penninx, Eco J C de Geus
OBJECTIVES: This study determined temporal stability of ambulatory measured cardiac autonomic activity for different time periods and investigated potential drivers of changes in this activity. METHODS: Data was drawn from baseline (n=2379), 2-year (n=2245), and 6-year (n=1876) follow-up from the Netherlands Study of Depression and Anxiety. Cardiac autonomic activity was measured with heart rate (HR), respiratory sinus arrhythmia (RSA) and pre-ejection period (PEP)...
July 27, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28769038/increased-mitochondrial-fusion-allows-the-survival-of-older-animals-in-diverse-c-elegans-longevity-pathways
#12
Snehal N Chaudhari, Edward T Kipreos
Mitochondria are dynamic organelles that undergo fusion and fission events. Mitochondrial dynamics are required for mitochondrial viability and for responses to changes in bioenergetic status. Here we describe an insulin-signaling and SCF(LIN-23)-regulated pathway that controls mitochondrial fusion in Caenorhabditis elegans by repressing the expression of the mitochondrial proteases SPG-7 and PPGN-1. This pathway is required for mitochondrial fusion in response to physical exertion, and for the associated extension in lifespan...
August 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28767731/hospital-trusts-productivity-in-the-english-nhs-uncovering-possible-drivers-of-productivity-variations
#13
María Jose Aragon Aragon, Adriana Castelli, James Gaughan
BACKGROUND: Health care systems in OECD countries are increasingly facing economic challenges and funding pressures. These normally demand interventions (political, financial and organisational) aimed at improving the efficiency of the health system as a whole and its single components. In 2009, the English NHS Chief Executive, Sir David Nicholson, warned that a potential funding gap of £20 billion should be met by extensive efficiency savings by March 2015. Our study investigates possible drivers of differential Trust performance (productivity) for the financial years 2010/11-2012/13...
2017: PloS One
https://www.readbyqxmd.com/read/28766462/visual-correlates-of-fitness-to-drive-in-adults-with-multiple-sclerosis
#14
Sherrilene Classen, Sarah Krasniuk, Sarah A Morrow, Liliana Alvarez, Miriam Monahan, Tim Danter, Heather Rosehart
The impact of visual and visual-cognitive impairments on fitness to drive in persons with multiple sclerosis (PwMS) are not well studied. We quantified visual correlates of fitness to drive in 30 PwMS. PwMS completed visual ability and visual attention assessments, and a standardized on-road assessment, and were compared with 145 older volunteer drivers. PwMS (vs. older volunteer drivers) made more total ( W = 12,139, p = .03) and critical driving errors (predictive of crashes) in adjustment to stimuli ( W = 11,352, p < ...
August 1, 2017: OTJR: Occupation, Participation and Health
https://www.readbyqxmd.com/read/28763391/spatial-surveillance-of-childhood-lead-exposure-in-a-targeted-screening-state-an-application-of-generalized-additive-models-in-denver-colorado
#15
Kevin Berg, Stephanie Kuhn, Mike Van Dyke
CONTEXT: The targeted nature of Colorado's childhood lead screening program presents several analytical issues that complicate routine epidemiologic surveillance. OBJECTIVES: To analyze spatial patterns of childhood lead exposure among children younger than 6 years, identifying areas of increased risk along with associated covariates. METHODS: We analyzed a spatial case-control data set of childhood lead poisoning using generalized additive models...
September 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/28758801/using-medico-legal-data-to-investigate-fatal-older-road-user-crash-circumstances-and-risk-factors
#16
Sjaan Koppel, Lyndal Bugeja, Daisy Smith, Ashne Lamb, Jeremy Dwyer, Michael Fitzharris, Stuart Newstead, Angelo D'Elia, Judith Charlton
OBJECTIVE: This study used medico-legal data to investigate fatal older road user (ORU, aged 65 years and older) crash circumstances and risk factors relating to four key components of the Safe System approach (e.g., roads and roadsides, vehicles, road users and speeds) to identify areas of priority for targeted prevention activity. METHOD: The Coroners' Court of Victoria (CCOV)'s Surveillance Database was searched to identify and describe the frequency and rate per 100,000 population of fatal ORU crashes in the Australian state of Victoria for 2013-2014...
July 31, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28754387/cost-of-cardiac-surgery-in-frail-compared-with-nonfrail-older-adults
#17
Michael Goldfarb, Melissa Bendayan, Lawrence G Rudski, Jean-Francois Morin, Yves Langlois, Felix Ma, Kevin Lachapelle, Renzo Cecere, Benoit DeVarennes, Christo I Tchervenkov, James M Brophy, Jonathan Afilalo
BACKGROUND: Frailty is a risk factor for mortality, morbidity, and prolonged length of stay after cardiac surgery, all of which are major drivers of hospitalization costs. The incremental hospitalization costs incurred in frail patients have yet to be elucidated. METHODS: Patients aged ≥ 60 years were evaluated for frailty before coronary artery bypass grafting or heart valve surgery at 2 academic centres between 2013 and 2015 as part of the McGill Frailty Registry...
August 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28752487/the-demography-of-mental-health-among-mature-adults-in-a-low-income-high-hiv-prevalence-context
#18
Iliana V Kohler, Collin F Payne, Chiwoza Bandawe, Hans-Peter Kohler
Very few studies have investigated mental health in sub-Saharan Africa (SSA). Using data from Malawi, this article provides a first picture of the demography of depression and anxiety (DA) among mature adults (aged 45 or older) in a low-income country with high HIV prevalence. DA are more frequent among women than men, and individuals affected by one are often affected by the other. DA are associated with adverse outcomes, such as poorer nutrition intake and reduced work efforts. DA also increase substantially with age, and mature adults can expect to spend a substantial fraction of their remaining lifetime-for instance, 52 % for a 55-year-old woman-affected by DA...
August 2017: Demography
https://www.readbyqxmd.com/read/28744014/low-burden-tp53-mutations-in-chronic-phase-of-myeloproliferative-neoplasms-association-with-age-hydroxyurea-administration-disease-type-and-jak2-mutational-status
#19
B Kubesova, S Pavlova, J Malcikova, J Kabathova, L Radova, N Tom, B Tichy, K Plevova, B Kantorova, K Fiedorova, M Slavikova, V Bystry, J Kissova, B Gisslinger, H Gisslinger, M Penka, J Mayer, R Kralovics, S Pospisilova, M Doubek
The multistep process of TP53 mutation expansion during myeloproliferative neoplasm (MPN) transformation into acute myeloid leukemia (AML) has been documented retrospectively. It is currently unknown how common TP53 mutations with low variant allele frequency (VAF) are, whether they are linked to hydroxyurea (HU) cytoreduction, and what disease progression risk they carry. Using ultra-deep next-generation sequencing, we examined 254 MPN patients treated with HU, interferon alpha-2a or anagrelide and 85 untreated patients...
July 24, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28737957/investigating-factors-influencing-pedestrian-injury-severity-at-intersections
#20
Zhuanglin Ma, Xi Lu, Steven I-Jy Chien, Dawei Hu
OBJECTIVE: Vehicle crashes which involved pedestrian at intersections have been reported occasionally. The injury severity of pedestrians in these crashes seems significantly related to driver and pedestrian attributes, vehicle characteristics, and the geometry of intersections. Identifying factors associated with pedestrian injury severity (PIS) is critical for reducing crashes and improving safety. For developing the proposed probit models, drivers who involved crashes are classified into three groups: young drivers (16 ≤ age ≤ 24); middle-aged drivers (25 ≤ age ≤ 64); older drivers (age ≥ 65)...
July 24, 2017: Traffic Injury Prevention
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