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https://www.readbyqxmd.com/read/28530232/tomographic-active-optical-trapping-of-arbitrarily-shaped-objects-by-exploiting-3d-refractive-index-maps
#1
Kyoohyun Kim, YongKeun Park
Optical trapping can manipulate the three-dimensional (3D) motion of spherical particles based on the simple prediction of optical forces and the responding motion of samples. However, controlling the 3D behaviour of non-spherical particles with arbitrary orientations is extremely challenging, due to experimental difficulties and extensive computations. Here, we achieve the real-time optical control of arbitrarily shaped particles by combining the wavefront shaping of a trapping beam and measurements of the 3D refractive index distribution of samples...
May 22, 2017: Nature Communications
https://www.readbyqxmd.com/read/28530049/examining-the-effects-of-hiv-self-testing-compared-to-standard-hiv-testing-services-a-systematic-review-and-meta-analysis
#2
Cheryl C Johnson, Caitlin Kennedy, Virginia Fonner, Nandi Siegfried, Carmen Figueroa, Shona Dalal, Anita Sands, Rachel Baggaley
INTRODUCTION: HIV self-testing (HIVST) is a discreet and convenient way to reach people with HIV who do not know their status, including many who may not otherwise test. To inform World Health Organization (WHO) guidance, we assessed the effect of HIVST on uptake and frequency of testing, as well as identification of HIV-positive persons, linkage to care, social harm, and risk behaviour. METHODS: We systematically searched for studies comparing HIVST to standard HIV testing until 1 June 2016...
May 15, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28530040/adolescents-with-hiv-and-transition-to-adult-care-in-the-caribbean-central-america-and-south-america-eastern-europe-and-asia-and-pacific-regions
#3
Heather Bailey, Maria Letícia Santos Cruz, Wipaporn Natalie Songtaweesin, Thanyawee Puthanakit
INTRODUCTION: The HIV epidemics in the Caribbean, Central America and South America (CCASA), Eastern Europe (EE) and Asia and Pacific (AP) regions are diverse epidemics affecting different key populations in predominantly middle-income countries. This narrative review describes the populations of HIV-positive youth approaching adolescence and adulthood in CCASA, EE and AP, what is known of their outcomes in paediatric and adult care to date, ongoing research efforts and future research priorities...
May 16, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28530039/transition-from-paediatric-to-adult-care-of-adolescents-living-with-hiv-in-sub-saharan-africa-challenges-youth-friendly-models-and-outcomes
#4
Désiré Lucien Dahourou, Chloé Gautier-Lafaye, Chloe A Teasdale, Lorna Renner, Marcel Yotebieng, Sophie Desmonde, Samuel Ayaya, Mary-Ann Davies, Valériane Leroy
INTRODUCTION: The number of adolescents with perinatally or behaviourally acquired HIV is increasing in low-income countries, and especially in sub-Saharan Africa where HIV prevalence and incidence are the highest. As they survive into adulthood in the era of antiretroviral therapy, there is a pressing need to transfer them from paediatric to adult care, known as the transition of care. We conducted a narrative review of recent evidence on their transition outcomes in Africa, highlighting the specific needs and challenges in these populations and settings, and the different models of care for transition...
May 16, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28530016/assessment-of-caregiving-constructs-toward-a-personal-familial-group-and-cultural-construction-of-dementia-care-through-the-eyes-of-personal-construct-psychology
#5
Eradah O Hamad, Ahmad N AlHadi, Christopher J Lee, Marie Y Savundranayagam, Jeffrey D Holmes, Elizabeth Anne Kinsella, Andrew M Johnson
Conditions that cause cognitive impairment and behavioural and personality changes, such as Alzheimer's disease (AD) and related dementia, have global impact across cultures. However, the experience of dementia care can vary between individuals, families, formal caregivers, and social groups from various cultures. Self-reported measures, caregiving stress models, and conceptual theories have been developed to address the physical, financial, psychological, and social factors associated with the experience of dementia care...
May 22, 2017: Journal of Cross-cultural Gerontology
https://www.readbyqxmd.com/read/28530006/kindergarten-elementary-school-teachers-and-web-based-oral-health-related-resources-an-exploration
#6
Marita Rohr Inglehart, Gabrielle A Zuzo, Joshua J Wilson
PURPOSE: The percentage of U.S. children with poor oral health continues to be high. Kindergarten/elementary school educators could play an important role in teaching students about oral health promotion. The objectives were to assess which oral health-related web-based resources teachers consider most helpful and how teachers' attitudes, knowledge, and behavioural intentions concerning oral health-related teaching change between before and after having access to a resource website. MATERIALS AND METHODS: Web-based survey data were collected from 95 kindergarten/elementary school educators before and after they accessed a website with oral health-related information for teachers (web-link: http://media...
May 19, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28529392/school-composition-school-culture-and-socioeconomic-inequalities-in-young-people-s-health-multi-level-analysis-of-the-health-behaviour-in-school-aged-children-hbsc-survey-in-wales
#7
Graham F Moore, Hannah J Littlecott, Rhiannon Evans, Simon Murphy, Gillian Hewitt, Adam Fletcher
Health inequalities emerge during childhood and youth, before widening in adulthood. Theorising, testing and interrupting the mechanisms through which inequalities are perpetuated and sustained is vital. Schools are viewed as settings through which inequality in young people's health may be addressed, but few studies examine the social processes via which institutional structures reproduce or mitigate health inequalities. Informed by Markham and Aveyard's theory of human functioning and school organisation, including their concept of institutional boundaries, critical theories of marketisation and the concept of micro-political practices within schools, this paper presents analysis of student survey data (N = 9055) from 82 secondary schools in Wales...
April 2017: British Educational Research Journal
https://www.readbyqxmd.com/read/28527464/-14-n-nqr-lineshape-in-nanocrystals-an-ab-initio-investigation-of-urea
#8
Alan Gregorovič
(14)N nuclear quadrupole resonance (NQR) lineshapes mostly contain information of low interest, although in nanocrystals they may display some unexpected behaviour. In this work, we present an ab initio computational study of the (14)N NQR lineshapes in urea nanocrystals as a function of the nanocrystal size and geometry, focusing on the surface induced broadening of the lineshapes. The lineshapes were obtained through a calculation of the electric field gradient for each nitrogen site in the nanocrystal separately, taking into account the individual crystal field by embedding the molecule of interest in a suitable lattice of point multipoles representing other urea molecules in the nanocrystal...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527301/exploration-of-dietary-patterns-and-alcohol-consumption-in-pregnant-women-in-the-uk-a-mixed-methods-study
#9
Victoria Coathup, Lesley Smith, Mary Boulton
BACKGROUND: fetal Alcohol Spectrum Disorders is a term used to describe a range of physical, cognitive and behavioural deficits in the offspring of women who drank alcohol during pregnancy. A growing body of evidence suggests alcohol consumption in the presence of poor maternal nutrition may increase the risk of harm to the developing fetus. OBJECTIVE: to investigate relationships between maternal dietary patterns and alcohol consumption, and explore which factors influence women's decisions about what to eat and drink during pregnancy...
April 27, 2017: Midwifery
https://www.readbyqxmd.com/read/28527130/pulse-generation-in-the-quorum-machinery-of-pseudomonas-aeruginosa
#10
Cicik Alfiniyah, Martin A Bees, A Jamie Wood
Pseudomonas aeruginosa is a Gram-negative bacterium that is responsible for a wide range of infections in humans. Colonies employ quorum sensing (QS) to coordinate gene expression, including for virulence factors, swarming motility and complex social traits. The QS signalling system of P. aeruginosa is known to involve multiple control components, notably the las, rhl and pqs systems. In this paper, we examine the las system and, in particular, the repressive interaction of rsaL, an embedded small regulative protein, employing recent biochemical information to aid model construction...
May 19, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28526839/fluorescence-correlation-spectroscopy-reveals-a-cooperative-unfolding-of-monomeric-amyloid-%C3%AE-42-with-a-low-gibbs-free-energy
#11
Mario Schneider, Stefan Walta, Chris Cadek, Walter Richtering, Dieter Willbold
The amyloid-beta peptide (Aβ) plays a major role in the progression of Alzheimer's disease. Due to its high toxicity, the 42 amino acid long isoform Aβ42 has become of considerable interest. The Aβ42 monomer is prone to aggregation down to the nanomolar range which makes conventional structural methods such as NMR or X-ray crystallography infeasible. Conformational information, however, will be helpful to understand the different aggregation pathways reported in the literature and will allow to identify potential conditions that favour aggregation-incompetent conformations...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526778/nudges-in-a-post-truth-world
#12
Neil Levy
Nudges-policy proposals informed by work in behavioural economics and psychology that are designed to lead to better decision-making or better behaviour-are controversial. Critics allege that they bypass our deliberative capacities, thereby undermining autonomy and responsible agency. In this paper, I identify a kind of nudge I call a nudge to reason, which make us more responsive to genuine evidence. I argue that at least some nudges to reason do not bypass our deliberative capacities. Instead, use of these nudges should be seen as appeals to mechanisms partially constitutive of these capacities, and therefore as benign (so far as autonomy and responsible agency are concerned)...
May 19, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28526704/elder-women-s-perceptions-around-optimal-perinatal-health-a-constructivist-grounded-theory-study-with-an-indigenous-community-in-southern-ontario
#13
Sujane Kandasamy, Meredith Vanstone, Mark Oremus, Trista Hill, Gita Wahi, Julie Wilson, A Darlene Davis, Ruby Jacobs, Rebecca Anglin, Sonia Savitri Anand
BACKGROUND: Women play important roles in translating health knowledge, particularly around pregnancy and birth, in Indigenous societies. We investigated elder Indigenous women's perceptions around optimal perinatal health. METHODS: Using a methodological framework that integrated a constructivist grounded-theory approach with an Indigenous epistemology, we conducted and analyzed in-depth interviews and focus groups with women from the Six Nations community in southern Ontario who self-identified as grandmothers...
May 18, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28526516/comparing-the-effect-of-temporal-delay-on-the-availability-of-egocentric-and-allocentric-information-in-visual-search
#14
Keira Ball, Yan Birch, Alison Lane, Amanda Ellison, Thomas Schenk
Frames of reference play a central role in perceiving an object's location and reaching to pick that object up. It is thought that the ventral stream, believed to subserve vision for perception, utilises allocentric coding, while the dorsal stream, argued to be responsible for vision for action, primarily uses an egocentric reference frame. We have previously shown that egocentric representations can survive a delay; however, it is possible that in comparison to allocentric information, egocentric information decays more rapidly...
May 16, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28526477/increasing-intention-to-cook-from-basic-ingredients-a-randomised-controlled-study
#15
Fiona Lavelle, Lynsey Hollywood, Martin Caraher, Laura McGowan, Michelle Spence, Dawn Surgenor, Amanda McCloat, Elaine Mooney, Monique Raats, Moira Dean
The promotion of home cooking is a strategy used to improve diet quality and health. However, modern home cooking typically includes the use of processed food which can lead to negative outcomes including weight gain. In addition, interventions to improve cooking skills do not always explain how theory informed their design and implementation. The Behaviour Change Technique (BCT) taxonomy successfully employed in other areas has identified essential elements for interventions. This study investigated the effectiveness of different instructional modes for learning to cook a meal, designed using an accumulating number of BCTs, on participant's perceived difficulty, enjoyment, confidence and intention to cook from basic ingredients...
May 16, 2017: Appetite
https://www.readbyqxmd.com/read/28526329/a-behaviour-change-intervention-to-reduce-sedentary-time-in-people-with-chronic-obstructive-pulmonary-disease-protocol-for-a-randomised-controlled-trial
#16
Sonia Wing Mei Cheng, Jennifer Alison, Sarah Dennis, Emmanuel Stamatakis, Lissa Spencer, Renae McNamara, Susan Sims, Zoe McKeough
INTRODUCTION: Replacing sedentary behaviour with light intensity physical activity (ie, activities classified as less than three metabolic equivalents, such as slow-paced walking) may be a more realistic strategy for reducing cardiometabolic risk in people with chronic obstructive pulmonary disease than only aiming to increase levels of moderate-vigorous intensity physical activity. Behaviour change interventions to reduce sedentary behaviour in people with chronic obstructive pulmonary disease have not yet been developed or tested...
May 16, 2017: Journal of Physiotherapy
https://www.readbyqxmd.com/read/28526074/oral-health-behaviour-in-migrant-and-non-migrant-adults-in-germany-the-utilization-of-regular-dental-check-ups
#17
Fabian Erdsiek, Dorothee Waury, Patrick Brzoska
BACKGROUND: Migrants in many European countries including Germany tend to utilize preventive measures less frequently than the majority population. Little is known about the dental health of migrants as well as about their oral health behaviour, particularly in the adult population. The aim of this study was to examine differences in the uptake of annual dental check-ups in adult migrants and non-migrants in Germany. METHODS: We used data from the cross-sectional survey 'German Health Update 2010' conducted by the Robert Koch Institute (n = 22,050)...
May 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28526000/barriers-and-facilitators-to-smoking-cessation-in-a-cancer-context-a-qualitative-study-of-patient-family-and-professional-views
#18
Mary Wells, Patricia Aitchison, Fiona Harris, Gozde Ozakinci, Andrew Radley, Linda Bauld, Vikki Entwistle, Alastair Munro, Sally Haw, Bill Culbard, Brian Williams
BACKGROUND: Continued smoking after cancer adversely affects quality of life and survival, but one fifth of cancer survivors still smoke. Despite its demands, cancer presents an opportunity for positive behaviour change. Smoking often occurs in social groups, therefore interventions which target families and individuals may be more successful. This qualitative study explored patients, family members and health professionals' views and experiences of smoking and smoking cessation after cancer, in order to inform future interventions...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28525797/to-neglect-or-integrate-contingency-information-from-outside-the-task-frame-that-is-the-question-effects-of-depressed-mood
#19
R M Msetfi, N Byrom, R A Murphy
Evidence shows that there are individual differences in the extent to which people attend to and integrate information into their decisions about the predictive contingencies between events and outcomes. In particular, information about the absence of events or outcomes, presented outside the current task frame, is often neglected. This trend is particularly evident in depression, as well as other psychopathologies, though reasons for information neglect remain unclear. We investigated this phenomenon across two experiments (Experiment 1: N=157; Experiment 2: N=150) in which participants, scoring low and high in the Beck Depression Inventory, were asked to learn a simple predictive relationship between a visual cue and an auditory outcome...
May 16, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28524399/reallocating-sedentary-time-to-moderate-to-vigorous-physical-activity-but-not-to-light-intensity-physical-activity-is-effective-to-reduce-adiposity-among-youths-a-systematic-review-and-meta-analysis
#20
REVIEW
A García-Hermoso, J M Saavedra, R Ramírez-Vélez, U Ekelund, B Del Pozo-Cruz
The aim of the study was to summarize the evidence of the effects of reallocating time spent in sedentary behaviours in different activity intensities on youth's adiposity. Five databases were searched. Studies that reported the effects of replacing sedentary behaviour with light-intensity physical activity (LIPA) and/or moderate-to-vigorous physical activity (MVPA) on at least one adiposity parameter. The estimated regression coefficients (β) and 95% CIs were combined and meta-analysed. Data from 7,351 youths and five studies were analysed...
May 19, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
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