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https://www.readbyqxmd.com/read/29328104/statistical-properties-of-single-mode-fiber-coupling-of-satellite-to-ground-laser-links-partially-corrected-by-adaptive-optics
#1
Lucien Canuet, Nicolas Védrenne, Jean-Marc Conan, Cyril Petit, Geraldine Artaud, Angelique Rissons, Jerome Lacan
In the framework of satellite-to-ground laser downlinks, an analytical model describing the variations of the instantaneous coupled flux into a single-mode fiber after correction of the incoming wavefront by partial adaptive optics (AO) is presented. Expressions for the probability density function and the cumulative distribution function as well as for the average fading duration and fading duration distribution of the corrected coupled flux are given. These results are of prime interest for the computation of metrics related to coded transmissions over correlated channels, and they are confronted by end-to-end wave-optics simulations in the case of a geosynchronous satellite (GEO)-to-ground and a low earth orbit satellite (LEO)-to-ground scenario...
January 1, 2018: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/29286662/strain-and-bond-length-dynamics-upon-growth-and-transfer-of-graphene-by-nexafs-spectroscopy-from-first-principles-and-experiment
#2
Wudmir Yudy Rojas, Allen Douglas Winter, James Gerard Grote, Steve S Kim, Rajesh R Naik, Adrienne D Williams, Conan Weiland, Edward Principe, Daniel A Fischer, Sarbajit Banerjee, David Prendergast, Eva M Campo
As the quest towards novel materials proceeds, improved characterization technologies are needed. In particular, the atomic thickness in graphene and other 2D materials renders some conventional technologies obsolete. Characterization technologies at wafer levels are needed with enough sensitivity to detect strain in order to inform fabrication. In this work, NEXAFS spectroscopy was combined with simulations to predict lattice parameters of graphene grown on copper and further transferred to a variety of substrates...
December 29, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29279785/leptospira-seroprevalence-in-domestic-dogs-and-cats-on-the-caribbean-island-of-saint-kitts
#3
Nicola Pratt, Anne Conan, Sreekumari Rajeev
Leptospirosis is an important bacterial zoonotic disease that affects humans and many animal species. Knowledge of prevalence of Leptospira in a given geographic region supports the implementation of effective control/prevention programmes and thus reduces the transmission risks. This study provides Leptospira seroprevalence and serovar distribution in dogs and cats on the Caribbean island of Saint Kitts. Convenient serum samples from domestic dogs (n = 101) and cats (n = 50) were tested by the microscopic agglutination test (MAT) using 21 Leptospira serovars belonging to 17 serogroups...
2017: Veterinary Medicine International
https://www.readbyqxmd.com/read/29273021/randomised-controlled-trial-to-improve-health-and-reduce-substance-use-in-established-psychosis-impact-cost-effectiveness-of-integrated-psychosocial-health-promotion
#4
Margaret Heslin, Anita Patel, Daniel Stahl, Poonam Gardner-Sood, Manyara Mushore, Shubulade Smith, Kathryn Greenwood, Oluwadamilola Onagbesan, Conan O'Brien, Catherine Fung, Ruth Ohlsen, David Hopkins, Philippa Lowe, Maurice Arbuthnot, Stan Mutatsa, Gill Todd, Anna Kolliakou, John Lally, Brendon Stubbs, Khalida Ismail, Anthony David, Robin Murray, Zerrin Atakan, Fiona Gaughran
BACKGROUND: There is mounting evidence that people with severe mental illness have unhealthy lifestyles, high rates of cardiovascular and metabolic diseases, and greater risk of early mortality. This study aimed to assess the cost-effectiveness of a health promotion intervention seeking to improve physical health and reduce substance use in people with psychosis. METHODS: Participants with a psychotic disorder, aged 18-65 years old and registered on an enhanced care approach programme or equivalent were recruited from community mental health teams in six mental health trusts in England...
December 22, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/29221867/modelling-ordered-packed-beds-of-spheres-the-importance-of-bed-orientation-and-the-influence-of-tortuosity-on-dispersion
#5
Fabian Dolamore, Conan Fee, Simone Dimartino
Ordered packing has previously been considered for porous media applications in the industrial and analytical worlds, with implementation constrained only by the lack of feasible fabrication methods. Additive manufacturing now provides the answer to this limitation, which leads to the novel domain of customized ordered packing and a variety of optimized geometries. In this work, the chromatographic behaviour of ordered configurations of particles was described using computational fluid dynamics methods based on the Lattice Boltzmann Model...
December 5, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29195461/using-the-trapped-energy-ratio-for-source-depth-discrimination-with-a-horizontal-line-array-theory-and-experimental-results
#6
Ewen Conan, Julien Bonnel, Barbara Nicolas, Thierry Chonavel
The problem of acoustic source depth discrimination was introduced as a way to get basic information on source depth in configurations where accurate depth estimation is not feasible. It is a binary classification problem, aiming to evaluate whether the source is near the surface or submerged. Herein, the classification relies on a signal measured with a horizontal line array in shallow water. Knowing the source-array distance is not required but the source bearing has to be close to the array endfire. Signal processing relies on a normal-mode propagation model, and thus requires prior knowledge of the mode characteristics...
November 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29173204/limitations-of-the-echinococcus-granulosus-genome-sequence-assemblies-for-analysis-of-the-gene-family-encoding-the-eg95-vaccine-antigen
#7
Charles G Gauci, Cristian A Alvarez Rojas, Conan Chow, Marshall W Lightowlers
Echinococcus granulosus is an important zoonotic parasite that is distributed worldwide. The EG95 vaccine was developed to assist with control of E. granulosus transmission through the parasite's livestock intermediate hosts. The vaccine is based on a recombinant antigen encoded by a gene which is a member of a multi-gene family. With the recent availability of two E. granulosus draft genomes, we sought to map the eg95 gene family to the genomes. We were unable to map unequivocally any of the eg95 gene family members which had previously been characterized by cloning and sequencing both strands of genomic DNA fragments...
November 27, 2017: Parasitology
https://www.readbyqxmd.com/read/29166958/insights-into-the-factors-associated-with-achieving-the-preference-of-home-death-in-terminal-cancer-a-national-population-based-study
#8
Finian Bannon, Victoria Cairnduff, Deirdre Fitzpatrick, Janine Blaney, Barbara Gomes, Anna Gavin, Conan Donnelly
OBJECTIVES: Most terminally ill cancer patients prefer to die at home, yet only a minority are able to achieve this. Our aim was to investigate the factors associated with cancer patients achieving their preference to die at home. METHODS: This study took the form of a mortality followback, population-based, observational survey of the relatives of deceased cancer patients in Northern Ireland. Individuals who registered the death of a friend or relative (aged ≥ 18 years) between 1 December 2011 and 31 May 2012, where the primary cause of death was cancer (ICD10: C00-D48), who were invited to take part...
November 23, 2017: Palliative & Supportive Care
https://www.readbyqxmd.com/read/29096544/a-systematic-review-investigating-the-behaviour-change-strategies-in-interventions-to-prevent-misuse-of-anabolic-steroids
#9
Geoff Bates, Emma Begley, David Tod, Lisa Jones, Conan Leavey, Jim McVeigh
We examined intervention effectiveness of strategies to prevent image- and performance-enhancing drug use. Comprehensive searches identified 14 interventions that met review inclusion criteria. Interventions were predominantly educational and delivered within school sport settings, but targeted a wide range of mediating factors. Identification of effective components was limited across studies by brief or imprecise descriptions of intervention content, lack of behavioural outcome measures and short-term follow-up times...
October 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/29079609/investigation-of-the-international-comparability-of-population-based-routine-hospital-data-set-derived-comorbidity-scores-for-patients-with-lung-cancer
#10
Margreet Lüchtenborg, Eva J A Morris, Daniela Tataru, Victoria H Coupland, Andrew Smith, Roger L Milne, Luc Te Marvelde, Deborah Baker, Jane Young, Donna Turner, Diane Nishri, Craig Earle, Lorraine Shack, Anna Gavin, Deirdre Fitzpatrick, Conan Donnelly, Yulan Lin, Bjorn Moller, David H Brewster, Andrew Deas, Dyfed W Huws, Ceri White, Janet Warlow, Jem Rashbass, Michael D Peake
INTRODUCTION: The International Cancer Benchmarking Partnership (ICBP) identified significant international differences in lung cancer survival. Differing levels of comorbid disease across ICBP countries has been suggested as a potential explanation of this variation but, to date, no studies have quantified its impact. This study investigated whether comparable, robust comorbidity scores can be derived from the different routine population-based cancer data sets available in the ICBP jurisdictions and, if so, use them to quantify international variation in comorbidity and determine its influence on outcome...
October 27, 2017: Thorax
https://www.readbyqxmd.com/read/29041786/census-and-vaccination-coverage-of-owned-dog-populations-in-four-resource-limited-rural-communities-mpumalanga-province-south-africa
#11
Anne Conan, Joy A C Geerdes, Oluyemisi A Akerele, Bjorn Reininghaus, Gregory J G Simpson, Darryn Knobel
Dogs (Canis familiaris) are often free-roaming in sub-Saharan African countries. Rabies virus circulates in many of these populations and presents a public health issue. Mass vaccination of dog populations is the recommended method to decrease the number of dog and human rabies cases. We describe and compare four populations of dogs and their vaccination coverage in four different villages (Hluvukani, Athol, Utah and Dixie) in Bushbuckridge Municipality, Mpumalanga province, South Africa. Cross-sectional surveys were conducted in the villages of Athol, Utah and Dixie, while data from a Health and Demographic Surveillance System were used to describe the dog population in Hluvukani village...
September 22, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/29036059/modeling-astronomical-adaptive-optics-performance-with-temporally-filtered-wiener-reconstruction-of-slope-data
#12
Carlos M Correia, Charlotte Z Bond, Jean-François Sauvage, Thierry Fusco, Rodolphe Conan, Peter L Wizinowich
We build on a long-standing tradition in astronomical adaptive optics (AO) of specifying performance metrics and error budgets using linear systems modeling in the spatial-frequency domain. Our goal is to provide a comprehensive tool for the calculation of error budgets in terms of residual temporally filtered phase power spectral densities and variances. In addition, the fast simulation of AO-corrected point spread functions (PSFs) provided by this method can be used as inputs for simulations of science observations with next-generation instruments and telescopes, in particular to predict post-coronagraphic contrast improvements for planet finder systems...
October 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28970621/response-to-mok-and-romanelli-identifying-best-practices-for-and-utilities-of-the-pharmacy-curriculum-outcome-assessment-examination
#13
COMMENT
Conan MacDougall, Tina Brock
No abstract text is available yet for this article.
August 2017: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28957476/do-perceived-barriers-to-clinical-presentation-affect-anticipated-time-to-presenting-with-cancer-symptoms-an-icbp-study
#14
Conan Donnelly, Samantha Quaife, Lindsay Forbes, Jackie Boylan, Carol Tishelman, Anna Gavin
Background: Cancer survival in the UK and Denmark are lower when compared with similar countries with late diagnosis a possible cause. We aimed to study the relationship between barriers to attending a primary care physician (GP) and anticipated time to help seeking (ATHS) with four cancer symptoms in six countries. Methods: A population-based survey measuring cancer awareness and beliefs conducted within the International Cancer Benchmarking Partnership in Australia, Canada, Denmark, Norway, Sweden and UK...
October 1, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28885871/using-the-virtual-world-of-second-life-in-veterinary-medicine-student-and-faculty-perceptions
#15
Mary M Pereira, Elpida Artemiou, Dee McGonigle, Anne Conan, Fortune Sithole, Kathleen Yvorchuk-St Jean
Virtual worlds are emerging technologies that can enhance student learning by encouraging active participation through simulation in immersive environments. At Ross University School of Veterinary Medicine (RUSVM), the virtual world of Second Life was piloted as an educational platform for first-semester students to practice clinical reasoning in a simulated veterinary clinical setting. Under the supervision of one facilitator, four groups of nine students met three times to process a clinical case using Second Life...
September 8, 2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28851841/backbone-cyclization-of-analgesic-conotoxin-gexiva-facilitates-direct-folding-of-the-ribbon-isomer
#16
Xiaosa Wu, Yen-Hua Huang, Quentin Kaas, Peta J Harvey, Conan K Wang, Han-Shen Tae, David J Adams, David J Craik
Conotoxin GeXIVA inhibits the α9α10 nicotinic acetylcholine receptor (nAChR) and is analgesic in animal models of pain. α-Conotoxins have four cysteines that can have three possible disulfide connectivities: globular (Cys(I)-Cys(III) and Cys(II)-Cys(IV)), ribbon (Cys(I)-Cys(IV) and Cys(II)-Cys(III)), or bead (Cys(I)-Cys(II) and Cys(III)-Cys(IV)). Native α-conotoxins preferably adopt the globular connectivity, and previous studies of α-conotoxins have focused on the globular isomers as the ribbon and bead isomers typically have lower potency at nAChRs than the globular form...
October 13, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28783751/animal-related-factors-associated-with-moderate-to-severe-diarrhea-in-children-younger-than-five-years-in-western-kenya-a-matched-case-control-study
#17
MULTICENTER STUDY
Anne Conan, Ciara E O'Reilly, Eric Ogola, J Benjamin Ochieng, Anna J Blackstock, Richard Omore, Linus Ochieng, Fenny Moke, Michele B Parsons, Lihua Xiao, Dawn Roellig, Tamer H Farag, James P Nataro, Karen L Kotloff, Myron M Levine, Eric D Mintz, Robert F Breiman, Sarah Cleaveland, Darryn L Knobel
BACKGROUND: Diarrheal disease remains among the leading causes of global mortality in children younger than 5 years. Exposure to domestic animals may be a risk factor for diarrheal disease. The objectives of this study were to identify animal-related exposures associated with cases of moderate-to-severe diarrhea (MSD) in children in rural western Kenya, and to identify the major zoonotic enteric pathogens present in domestic animals residing in the homesteads of case and control children...
August 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28782434/high-leptospira-seroprevalence-in-captive-and-wild-caught-vervet-monkeys-chlorocebus-sabeus-on-the-caribbean-island-of-saint-kitts
#18
Sreekumari Rajeev, Anne Conan, Nicola Pratt, Amy Beierschmitt, Roberta Palmour
Leptospirosis is a zoonotic disease of global importance. Very little information is available on Leptospira infection in nonhuman primates. We report herein a high seroprevalence (49.4%; 95% confidence interval: 41.6-57.2%) to Leptospira serovars in vervet monkeys ( Chlorocebus sabeus) on the Caribbean island of Saint Kitts. Monkeys bred in captivity ( n = 81) had a significantly higher seroprevalence compared to wild-caught monkeys ( n = 81; p < 0.05). Seroprevalence to serovar Bataviae was significantly higher in monkeys bred in captivity and was higher to serovar Bratislava in wild-caught monkeys ( p < 0...
November 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28751756/knowledge-or-noise-making-sense-of-general-practitioners-and-consultant-use-of-2-week-wait-referrals-for-suspected-cancer
#19
Conan Donnelly, Nigel Hart, Alan David McCrorie, Lesley Anderson, Michael Donnelly, Peter Murchie, Anna Gavin
BACKGROUND: Early diagnosis and treatment of cancer is the goal of the 2-week-wait referral pathway (2WW). Variation exists between General Practice use of 2WW and rates of consultant reprioritisation of GP referral from routine to 2WW (Consultant Upgrade). We investigated variation in General Practice and Consultant Upgrade 2WW referral activity. METHODS: Data from 185 000 referrals and 29 000 cancers recorded between 2011 and 2013 from the Northern Ireland Cancer Waiting Time database (CaPPS) were analysed to ascertain standardised referral rate ratios, detection rate (DR) (=sensitivity) and conversion rate (CR) (=positive predictive value) for Practice 2WW referrals and Consultant Upgrade 2WW...
August 22, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28736657/high-temporal-resolution-aberrometry-in-a-50-eye-population-and-implications-for-adaptive-optics-error-budget
#20
Jessica Jarosz, Pedro Mecê, Jean-Marc Conan, Cyril Petit, Michel Paques, Serge Meimon
We formed a database gathering the wavefront aberrations of 50 healthy eyes measured with an original custom-built Shack-Hartmann aberrometer at a temporal frequency of 236 Hz, with 22 lenslets across a 7-mm diameter pupil, for a duration of 20 s. With this database, we draw statistics on the spatial and temporal behavior of the dynamic aberrations of the eye. Dynamic aberrations were studied on a 5-mm diameter pupil and on a 3.4 s sequence between blinks. We noted that, on average, temporal wavefront variance exhibits a n(-2) power-law with radial order n and temporal spectra follow a f(-1...
April 1, 2017: Biomedical Optics Express
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