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https://www.readbyqxmd.com/read/28724228/a-new-method-for-correlation-analysis-of-compositional-environmental-data-a-worked-example
#1
C Reimann, P Filzmoser, K Hron, P Kynčlová, R G Garrett
Most data in environmental sciences and geochemistry are compositional. Already the unit used to report the data (e.g., μg/l, mg/kg, wt%) implies that the analytical results for each element are not free to vary independently of the other measured variables. This is often neglected in statistical analysis, where a simple log-transformation of the single variables is insufficient to put the data into an acceptable geometry. This is also important for bivariate data analysis and for correlation analysis, for which the data need to be appropriately log-ratio transformed...
July 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28724149/using-reflections-to-evaluate-the-stfm-behavioral-science-family-systems-educator-fellowship
#2
Deborah A Taylor, Victoria Gorski, Sandra K Burge
BACKGROUND AND OBJECTIVES: A group of family medicine educators identified a need and developed a 1-year fellowship for early career behavioral science educators. This occurred in response to a reduction in previous opportunities and resources. The program was designed to shape and mentor new behavioral science faculty teaching in family medicine departments and programs. Quantitative data analysis from pre- and post-fellowship survey data from years 1-4 confirmed fellowship objectives were met...
July 2017: Family Medicine
https://www.readbyqxmd.com/read/28723903/automatic-analysis-and-3d-modelling-of-hi-c-data-using-tadbit-reveals-structural-features-of-the-fly-chromatin-colors
#3
François Serra, Davide Baù, Mike Goodstadt, David Castillo, Guillaume Filion, Marc A Marti-Renom
The sequence of a genome is insufficient to understand all genomic processes carried out in the cell nucleus. To achieve this, the knowledge of its three-dimensional architecture is necessary. Advances in genomic technologies and the development of new analytical methods, such as Chromosome Conformation Capture (3C) and its derivatives, provide unprecedented insights in the spatial organization of genomes. Here we present TADbit, a computational framework to analyze and model the chromatin fiber in three dimensions...
July 19, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28723249/experiences-of-individuals-with-visual-impairments-in-integrated-physical-education-a-retrospective-study
#4
Justin A Haegele, Xihe Zhu
PURPOSE: The purpose of this retrospective study was to examine the experiences of adults with visual impairments during school-based integrated physical education (PE). METHOD: An interpretative phenomenological analysis (IPA) research approach was used and 16 adults (ages 21-48 years; 10 women, 6 men) with visual impairments acted as participants for this study. The primary sources of data were semistructured audiotaped telephone interviews and reflective field notes, which were recorded during and immediately following each interview...
July 19, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28722704/targeted-proteomic-assays-for-quantitation-of-proteins-identified-by-proteogenomic-analysis-of-ovarian-cancer
#5
Ehwang Song, Yuqian Gao, Chaochao Wu, Tujin Shi, Song Nie, Thomas L Fillmore, Athena A Schepmoes, Marina A Gritsenko, Wei-Jun Qian, Richard D Smith, Karin D Rodland, Tao Liu
Mass spectrometry (MS) based targeted proteomic methods such as selected reaction monitoring (SRM) are emerging as a promising tool for verification of candidate proteins in biological and biomedical applications. The Clinical Proteomic Tumor Analysis Consortium (CPTAC) of the National Cancer Institute has investigated the standardization and analytical validation of the SRM assays and demonstrated robust analytical performance on different instruments across different laboratories. An Assay Portal has also been established by CPTAC to provide the research community a resource consisting of large sets of targeted MS-based assays, and a depository to share assays publicly...
July 19, 2017: Scientific Data
https://www.readbyqxmd.com/read/28722404/high-performance-colorimetric-detection-of-thiosulfate-by-using-silver-nanoparticles-for-smartphone-based-analysis
#6
Chen Dong, Zhuqing Wang, Yujie Zhang, Xuehua Ma, M Zubair Iqbal, Lijing Miao, Zhuangwei Zhou, Zheyu Shen, Aiguo Wu
Developing thiosulfate (S2O32-) sensors with silver nanoparticles (AgNPs) for analysis of aqueous solutions with the interference of other anions remains challenging. In this study, we propose a new strategy for excellent selective colorimetric detection of S2O32-. The non-morphological transition of AgNPs leading to a color change from yellow to brown is verified by UV-vis, TEM, DLS, SEM, and XPS analyses. The sensor exhibits high sensitivity with detection limits of 1.0 µM by naked-eye determination and 0...
July 19, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28721807/developing-the-transdisciplinary-aging-research-agenda-new-developments-in-big-data
#7
Christian William Callaghan
In light of dramatic advances in big data analytics and the application of these advances in certain scientific fields, new potentialities exist for breakthroughs in aging research. Translating these new potentialities to research outcomes for aging populations, however, remains a challenge, as underlying technologies which have enabled exponential increases in 'big data' have not yet enabled a commensurate era of 'big knowledge,' or similarly exponential increases in biomedical breakthroughs. Debates also reveal differences in the literature, with some arguing big data analytics heralds a new era associated with the 'end of theory' or which makes the scientific method obsolete, where correlation supercedes causation, whereby science can advance without theory and hypotheses testing...
July 19, 2017: Current Aging Science
https://www.readbyqxmd.com/read/28721202/defining-the-inflammatory-signature-of-human-lung-explant-tissue-in-the-presence-and-absence-of-glucocorticoid
#8
Tracy L Rimington, Emily Hodge, Charlotte K Billington, Sangita Bhaker, Binaya K C, Iain Kilty, Scott Jelinsky, Ian P Hall, Ian Sayers
BACKGROUND:  Airway inflammation is a feature of many respiratory diseases and there is a need for newer, more effective anti-inflammatory compounds. The aim of this study was to develop an ex vivo human lung explant model which can be used to help study the mechanisms underlying inflammatory responses and which can provide a tool to aid drug discovery for inflammatory respiratory diseases such as asthma and COPD. METHOD:  Parenchymal lung tissue from 6 individual donors was dissected and cultured with two pro-inflammatory stimuli, lipopolysaccharide (LPS) (1 µg/ml) and interleukin-1 beta (IL-1β) (10 ng/ml) in the presence or absence of dexamethasone (1 µM)...
2017: F1000Research
https://www.readbyqxmd.com/read/28720681/the-eubivas-project-within-and-between-subject-biological-variation-data-for-serum-creatinine-using-enzymatic-and-alkaline-picrate-methods-and-implications-for-monitoring
#9
Anna Carobene, Irene Marino, Abdurrahman Coŝkun, Mustafa Serteser, Ibrahim Unsal, Elena Guerra, William A Bartlett, Sverre Sandberg, Aasne Karine Aarsand, Marit Sverresdotter Sylte, Thomas Røraas, Una Ørvim Sølvik, Pilar Fernandez-Calle, Jorge Díaz-Garzón, Francesca Tosato, Mario Plebani, Niels Jonker, Gerhard Barla, Ferruccio Ceriotti
BACKGROUND: The European Federation of Clinical Chemistry and Laboratory Medicine (EFLM) European Biological Variation Study (EuBIVAS) has been established to deliver rigorously determined biological variation (BV) indices. EuBIVAS determined BV for serum creatinine using the enzymatic and alkaline picrate measurement methods. METHOD: In total, 91 healthy individuals (38 males, 53 females; age range, 21-69 years) were bled for 10 consecutive weeks at 6 European laboratories...
July 18, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28720644/effects-of-non-vitamin-k-antagonist-oral-anticoagulants-versus-warfarin-in-patients-with-atrial-fibrillation-and-valvular-heart-disease-a-systematic-review-and-meta-analysis
#10
REVIEW
Kuo-Li Pan, Daniel E Singer, Bruce Ovbiagele, Yi-Ling Wu, Mohamed A Ahmed, Meng Lee
BACKGROUND: The original non-vitamin K antagonist oral anticoagulant (NOAC) trials in nonvalvular atrial fibrillation (AF) enrolled patients with native valve pathologies. The object of this study was to quantify the benefit-risk profiles of NOACs versus warfarin in AF patients with native valvular heart disease (VHD). METHODS AND RESULTS: Trials were identified by exhaustive literature search. Trial data were combined using inverse variance weighting to produce a meta-analytic summary hazard ratio (HR) and 95% confidence interval (CI) of efficacy and safety of NOACs versus warfarin...
July 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28720536/a-diffusing-wave-spectroscopy-study-of-pharmaceutical-emulsions-for-physical-stability-assessment
#11
Andreas Niederquell, Alexandra H E Machado, Martin Kuentz
Emulsions are broadly used in pharmaceutics either as intermediate products or as final dosage forms. Such disperse systems are only kinetically stabilized and therefore early detection of physical instability is highly desirable. This work employed diffusing wave spectroscopy (DWS) to study a series of model emulsions that were categorized, based on their composition, as either "simple" or "complex". DWS data were compared with results of droplet size imaging, apparent viscosity obtained by microfluidics, and near-infrared (NIR) analytical centrifugation...
July 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28720515/ahrq-series-on-complex-intervention-systematic-reviews-paper-4-selecting-analytic-approaches
#12
Meera Viswanathan, Melissa L McPheeters, M Hassan Murad, Mary E Butler, Emily E Beth Devine, Michele P Dyson, Jeanne-Marie Guise, Leila C Kahwati, Jeremy N V Miles, Sally C Morton
BACKGROUND: Systematic reviews of complex interventions can vary widely in purpose, data availability and heterogeneity, and stakeholder expectations. RATIONALE: This article addresses the uncertainty that systematic reviewers face in selecting methods for reviews of complex interventions. Specifically, it lays out parameters for systematic reviewers to consider when selecting analytic approaches that best answer the questions at hand, and suggests analytic techniques that may be appropriate in different circumstances...
June 29, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28720270/cancer-through-black-eyes-the-views-of-uk-based-black-men-towards-cancer-a-constructivist-grounded-theory-study
#13
Betselot Mulugeta, Susan Williamson, Rob Monks, Thomas Hack, Kinta Beaver
PURPOSE: Little is known about black African (BA) and black African-Caribbean (BAC) men's views towards cancer; yet culture and acculturation can contribute to the way in which people understand, explain and develop their attitudes towards cancer. Hence, cancer prevention and early detection strategies may not be sensitive to United Kingdom (UK)-based black men's views, affecting their awareness of risk factors and early detection services. This study explored the views of UK-based BA and BAC men towards cancer...
August 2017: European Journal of Oncology Nursing: the Official Journal of European Oncology Nursing Society
https://www.readbyqxmd.com/read/28720090/-we-and-the-nurses-are-now-working-with-one-voice-how-community-leaders-and-health-committee-members-describe-their-role-in-sierra-leone-s-ebola-response
#14
Shannon A McMahon, Lara S Ho, Kerry Scott, Hannah Brown, Laura Miller, Ruwan Ratnayake, Rashid Ansumana
BACKGROUND: Across low-income settings, community volunteers and health committee members support the formal health system - both routinely and amid emergencies - by engaging in health services such as referrals and health education. During the 2014-2015 Ebola epidemic, emerging reports suggest that community engagement was instrumental in interrupting transmission. Nevertheless, literature regarding community volunteers' roles during emergencies generally, and Ebola specifically, is scarce...
July 18, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28719868/quantitative-meta-analytic-approaches-for-the-systematic-synthesis-of-data-and-hazard-identification-a-case-study-of-decreased-pain-sensitivity-due-to-trimethylbenzene-exposure
#15
J Allen Davis, Andrew Kraft
Traditionally, human health risk assessments have relied on qualitative approaches for hazard identification, which involves weight of evidence determinations that integrate evidence across multiple studies. Recently, the National Research Council has recommended the development of quantitative approaches for evidence integration, including the application of meta-analyses, to help summarize and evaluate the results of a systematic review. In the meta-analytic approach, a pooled effect size is calculated after consideration of multiple potential confounding factors in order to determine whether the entire database under consideration indicates a chemical is a hazard...
July 15, 2017: Environmental Research
https://www.readbyqxmd.com/read/28719378/chemical-stability-of-morphine-ropivacaine-and-ziconotide-in-combination-for-intrathecal-analgesia
#16
Julien Robert, Jérémy Sorrieul, Elsa Rossignol, Hélène Beaussart, Hélène Kieffer, Caroline Folliard, Denis Dupoiron, Catherine Devys
Pain is the most feared symptom amongst individuals living with cancer. In 15% to 20% of patients, conventional analgesic therapy either fails to relieve pain or induces adverse effects. Intrathecal drug delivery systems may present an effective alternative for pain management. The Cancerology Center Paul Papin protocol includes an admixture of morphine, ropivacaine, and ziconotide in intrathecal preparations. These drugs are administered by a fully implantable or an external pump. Syringes or polyolefin infusion bags are prepared for refill just before use...
July 2017: International Journal of Pharmaceutical Compounding
https://www.readbyqxmd.com/read/28718919/putting-rings-around-carbon-nanotubes
#17
Emilio M Pérez
In the last five years, we have developed synthetic methods towards encapsulation of single walled carbon nanotubes (SWNTs) into organic macrocycles, to form rotaxane-type molecules. These are the first examples of mechanically interlocked SWNTs derivatives (MINTs). In this article, I discuss our motivation to continue developing chemistry of SWNTs at a time well past their hype. We explain our synthetic strategy and characterization methodology in detail, stressing the general aspects. In particular, we emphasize the importance of adequate control experiments and bulk spectroscopic and analytical data to determine the structure of SWNT derivatives, as opposed to relying only (or mostly) on microscopy...
July 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28718824/associations-between-red-meat-intakes-and-the-micronutrient-intake-and-status-of-uk-females-a-secondary-analysis-of-the-uk-national-diet-and-nutrition-survey
#18
Emma Derbyshire
Blanket health messages to lower red meat intakes are being communicated at present. These could have adverse implications on the micronutrient quality of women's diets. The current paper evaluates the nutritional impact of lower red meat intakes on British women's micronutrient intakes and status. A secondary analysis of the UK National Diet and Nutrition Survey was undertaken using data from years 2008/2009 to 2011/2012. This was comprised of dietary and blood analyte data from 1384 and 641 females aged 11 to 64 years...
July 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28718755/preliminary-evidence-for-the-effects-of-aging-and-multiple-sclerosis-on-cognitive-performance-an-analysis-based-on-effect-size-estimates
#19
Rachel E Bollaert, Julia M Balto, Brian M Sandroff, Gioella Chaparro, Manuel E Hernandez, Robert W Motl
Background/Study Context: Although cognitive impairment is common in persons with multiple sclerosis (MS), there are limited data on older adults with MS. The current pilot study involved a preliminary examination of cognitive impairments across a comprehensive neuropsychological assessment in older adults with MS compared with older adults without MS. METHODS: Twenty older adults with MS and 20 older adults without MS (≥60 years of age) underwent cognitive assessments, including the Trail Making Test (TMT) and the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS)...
July 2017: Experimental Aging Research
https://www.readbyqxmd.com/read/28718492/-hiv-and-syphilis-coinfection-in-pregnancy-and-vertical-hiv-transmission-a-study-based-on-epidemiological-surveillance-data
#20
Lisiane M W Acosta, Tonantzin Ribeiro Gonçalves, Nêmora Tregnago Barcellos
Objective: To estimate the rate of HIV and syphilis coinfection among pregnant women living in Porto Alegre, Brazil, as well as the association of coinfection with vertical HIV transmission and socioeconomic variables. Method: This analytical retrospective cross-sectional study employed data from the regular epidemiological surveillance system for the period from 2010 to 2013. Data were obtained regarding pregnant women with HIV and exposed children, syphilis in pregnancy, and congenital syphilis...
December 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
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