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https://www.readbyqxmd.com/read/28545231/atmospheric-sampling-on-ascension-island-using-multirotor-uavs
#1
Colin Greatwood, Thomas S Richardson, Jim Freer, Rick M Thomas, A Rob MacKenzie, Rebecca Brownlow, David Lowry, Rebecca E Fisher, Euan G Nisbet
As part of an NERC-funded project investigating the southern methane anomaly, a team drawn from the Universities of Bristol, Birmingham and Royal Holloway flew small unmanned multirotors from Ascension Island for the purposes of atmospheric sampling. The objective of these flights was to collect air samples from below, within and above a persistent atmospheric feature, the Trade Wind Inversion, in order to characterise methane concentrations and their isotopic composition. These parameters allow the methane in the different air masses to be tied to different source locations, which can be further analysed using back trajectory atmospheric computer modelling...
May 23, 2017: Sensors
https://www.readbyqxmd.com/read/28544980/what-we-authors-reviewers-and-editors-of-scientific-work-can-learn-from-the-analytical-history-of-biological-3-nitrotyrosine
#2
REVIEW
Dimitrios Tsikas
Tyrosine and tyrosine residues in proteins are attacked by the reactive oxygen and nitrogen species peroxynitrite (O=N-OO(-)) to generate 3-nitrotyrosine (3-NT) and 3-nitrotyrosine-proteins (3-NTProt), respectively. 3-NT and 3-NTProt are widely accepted as biomarkers of nitr(os)ative stress. Over the years many different analytical methods have been reported for 3-NT and 3-NTProt. Reported concentrations often differ by more than three orders of magnitude, indicative of serious analytical problems. Strategies to overcome pre-analytical and analytical shortcomings and pitfalls have been proposed...
May 13, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28544945/longitudinal-association-between-diabetes-and-cognitive-decline-the-national-health-and-aging-trends-study
#3
Alexandra M V Wennberg, Clinton E Hagen, Rebecca F Gottesman, Vadim Zipunnikov, Christopher N Kaufmann, Marilyn S Albert, George W Rebok, Judith D Kasper, Adam P Spira
Type II diabetes mellitus (DM) is associated with increased risk of dementia; however, few studies have examined the longitudinal association between DM and cognitive outcomes in large nationally representative cohorts. We investigated these associations in 7605 participants enrolled in the National Health and Aging Trends Study, a nationally representative prospective study of Medicare beneficiaries ≥65, from 2011 to 2015. Participants or proxy respondents reported DM and dementia diagnosis, and participants completed immediate and delayed recall word list learning tests and the Clock Drawing Test...
May 16, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28544481/matching-phenotypes-to-whole-genomes-lessons-learned-from-four-iterations-of-the-personal-genome-project-community-challenges
#4
Binghuang Cai, Biao Li, Nikki Kiga, Janita Thusberg, Timothy Bergquist, Yun-Ching Chen, Noushin Niknafs, Hannah Carter, Collin Tokheim, Violeta Beleva-Guthrie, Christopher Douville, Rohit Bhattacharya, Hui Ting Grace Yeo, Jean Fan, Sohini Sengupta, Dewey Kim, Melissa Cline, Tychele Turner, Mark Diekhans, Jan Zaucha, Lipika R Pal, Chen Cao, Chen-Hsin Yu, Yizhou Yin, Marco Carraro, Manuel Giollo, Carlo Ferrari, Emanuela Leonardi, Silvio C E Tosatto, Jason Bobe, Madeleine Ball, Roger Hoskins, Susanna Repo, George Church, Steven E Brenner, John Moult, Julian Gough, Mario Stanke, Rachel Karchin, Sean D Mooney
The advent of next generation sequencing has dramatically decreased the cost for whole genome sequencing and increased the viability for its application in research and clinical care. The Personal Genome Project (PGP) provides unrestricted access to genomes of individuals and their associated phenotypes. This resource enabled the Critical Assessment of Genome Interpretation (CAGI) to create a community challenge to assess the bioinformatics community's ability to predict traits from whole genomes. In CAGI PGP challenge, researchers were asked to predict whether an individual had a particular trait or profile based on their whole genome...
May 23, 2017: Human Mutation
https://www.readbyqxmd.com/read/28544198/jaboticaba-berry-peel-intake-prevents-insulin-resistance-induced-tau-phosphorylation-in-mice
#5
Ângela G Batista, Edilene S Soares, Monique C P Mendonça, Juliana K da Silva, Ana Paula Dionísio, Cesar R Sartori, Maria Alice da Cruz-Höfling, Mário R Maróstica Júnior
The hyperphosphorylation of tau in the hippocampus can be caused by central and peripheral insulin resistance and these alterations are related to the development of tauopathies, such as Alzheimer's disease. In this study, we used a high-fat diet to induce obesity and insulin resistance in adult Swiss mice and checked whether supplementation with Myrciaria jaboticaba berry peel for 10 weeks could improve insulin sensitivity, learning/memory performance and prevent tau phosphorylation in the hippocampus. Furthermore, adipocytokines, inflammatory markers, and oxidative stress were assessed...
May 19, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28543944/anterior-cingulate-cortex-supports-effort-allocation-toward-a-qualitatively-preferred-option
#6
Evan E Hart, Julian O Gerson, Yael Zoken, Marisella Garcia, Alicia Izquierdo
The anterior cingulate cortex (ACC) is known to be involved in effortful choice, yet its role in cost-benefit evaluation of qualitatively different rewards (more/less preferred), beyond magnitude differences (larger/smaller), is poorly understood. Selecting between qualitatively different options is a decision type commonly faced by humans. Here we assessed the role of ACC on a task that has primarily been used to probe striatal function in motivation. Rats were trained to stable performance on a progressive ratio schedule for sucrose pellets and were then given sham surgeries (control) or excitotoxic NMDA-lesions of ACC...
May 20, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28543786/immunohistochemical-colocalization-of-g-protein-alpha-subunits-and-5-ht-in-the-rectal-gland-of-the-cartilaginous-fish-scyliorhinus-canicula
#7
E R Lauriano, S Pergolizzi, J Gangemi, M Kuciel, G Capillo, M Aragona, C Faggio
Serotonin [5-hydroxytryptamine (5-HT)] is an important neuromodulator involved in a wide range of physiological functions. The effects of serotonin are mediated by an extended family of receptors coupled to multiple heterotrimeric G-proteins, associated with cellular membrane. G proteins connect receptors to effectors and thus trigger intracellular signaling pathways. These cellular processes several regulate systemic functions such as embryonic development, gonadal development, learning and memory, and organismal homeostasis...
May 22, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28542837/phenotype-and-natural-history-of-variant-late-infantile-ceroid-lipofuscinosis-5
#8
Alessandro Simonati, Ruth E Williams, Nardo Nardocci, Minna Laine, Roberta Battini, Angela Schulz, Barbara Garavaglia, Francesca Moro, Francesco Pezzini, Filippo M Santorelli
AIM: To characterize the phenotypic profile of a cohort of children affected with CLN5, a rare form of neuronal ceroid-lipofuscinosis (NCL), and to trace the features of the natural history of the disease. METHOD: Records of 15 children (nine males, six females) were obtained from the data sets of the DEM-CHILD International NCL Registry. Disease progression was measured by rating six functional domains at different time points along the disease course. All patients underwent mutation analysis of the CLN5 gene and ultrastructural investigations of peripheral tissues...
May 25, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28542709/maternal-deaths-in-the-nordic-countries
#9
Siri Vangen, Birgit Bødker, Liv Ellingsen, Sissel Saltvedt, Mika Gissler, Reynir T Geirsson, Lill T Nyfløt
INTRODUCTION: Despite the seriousness of the event, maternal deaths are substantially underreported. There is often a missed opportunity to learn from such tragedies. The aim of the study was to identify maternal deaths in the five Nordic countries, to classify causes of death based on internationally acknowledged criteria, and to identify areas that would benefit from further teaching, training or research to possibly reduce the number of maternal deaths. MATERIAL AND METHODS: We present data for the years 2005-2013...
May 23, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28542333/it-takes-biking-to-learn-physical-activity-improves-learning-a-second-language
#10
Fengqin Liu, Simone Sulpizio, Suchada Kornpetpanee, Remo Job
Recent studies have shown that concurrent physical activity enhances learning a completely unfamiliar L2 vocabulary as compared to learning it in a static condition. In this paper we report a study whose aim is twofold: to test for possible positive effects of physical activity when L2 learning has already reached some level of proficiency, and to test whether the assumed better performance when engaged in physical activity is limited to the linguistic level probed at training (i.e. L2 vocabulary tested by means of a Word-Picture Verification task), or whether it extends also to the sentence level (which was tested by means of a Sentence Semantic Judgment Task)...
2017: PloS One
https://www.readbyqxmd.com/read/28542248/the-detection-of-faked-identity-using-unexpected-questions-and-mouse-dynamics
#11
Merylin Monaro, Luciano Gamberini, Giuseppe Sartori
The detection of faked identities is a major problem in security. Current memory-detection techniques cannot be used as they require prior knowledge of the respondent's true identity. Here, we report a novel technique for detecting faked identities based on the use of unexpected questions that may be used to check the respondent identity without any prior autobiographical information. While truth-tellers respond automatically to unexpected questions, liars have to "build" and verify their responses. This lack of automaticity is reflected in the mouse movements used to record the responses as well as in the number of errors...
2017: PloS One
https://www.readbyqxmd.com/read/28542223/measuring-changes-in-transmission-of-neglected-tropical-diseases-malaria-and-enteric-pathogens-from-quantitative-antibody-levels
#12
Benjamin F Arnold, Mark J van der Laan, Alan E Hubbard, Cathy Steel, Joseph Kubofcik, Katy L Hamlin, Delynn M Moss, Thomas B Nutman, Jeffrey W Priest, Patrick J Lammie
BACKGROUND: Serological antibody levels are a sensitive marker of pathogen exposure, and advances in multiplex assays have created enormous potential for large-scale, integrated infectious disease surveillance. Most methods to analyze antibody measurements reduce quantitative antibody levels to seropositive and seronegative groups, but this can be difficult for many pathogens and may provide lower resolution information than quantitative levels. Analysis methods have predominantly maintained a single disease focus, yet integrated surveillance platforms would benefit from methodologies that work across diverse pathogens included in multiplex assays...
May 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28542179/teaching-genetics-prior-to-teaching-evolution-improves-evolution-understanding-but-not-acceptance
#13
Rebecca Mead, Momna Hejmadi, Laurence D Hurst
What is the best way to teach evolution? As microevolution may be configured as a branch of genetics, it being a short conceptual leap from understanding the concepts of mutation and alleles (i.e., genetics) to allele frequency change (i.e., evolution), we hypothesised that learning genetics prior to evolution might improve student understanding of evolution. In the UK, genetics and evolution are typically taught to 14- to 16-y-old secondary school students as separate topics with few links, in no particular order and sometimes with a large time span between...
May 2017: PLoS Biology
https://www.readbyqxmd.com/read/28541894/the-extreme-value-machine
#14
Ethan M Rudd, Lalit P Jain, Walter J Scheirer, Terrance E Boult
It is often desirable to be able to recognize when inputs to a recognition function learned in a supervised manner correspond to classes unseen at training time. With this ability, new class labels could be assigned to these inputs by a human operator, allowing them to be incorporated into the recognition function - ideally under an efficient incremental update mechanism. While good algorithms that assume inputs from a fixed set of classes exist, e.g., artificial neural networks and kernel machines, it is not immediately obvious how to extend them to perform incremental learning in the presence of unknown query classes...
May 23, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28541413/the-influence-of-the-apolipoprotein-e-apoe-gene-on-subacute-post-concussion-neurocognitive-performance-in-college-athletes
#15
Victoria C Merritt, Amanda R Rabinowitz, Peter A Arnett
Objective: The purpose of this study was to determine whether the ε4 allele of the APOE gene influences neurocognitive outcome following sports-related concussion. It was hypothesized that participants with an ε4 allele would show poorer neurocognitive performance and greater neurocognitive variability than those without an ε4 allele. Method: Participants included 57 concussed collegiate athletes (77.2% male) who participated in a concussion management program at a large university...
May 24, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28541202/linear-support-tensor-machine-with-lsk-channels-pedestrian-detection-in-thermal-infrared-images
#16
Sujoy Kumar Biswas, Peyman Milanfar
Pedestrian detection in thermal infrared images poses unique challenges because of the low resolution and noisy nature of the image. Here we propose a mid-level attribute in the form of the multidimensional template, or tensor, using Local Steering Kernel (LSK) as low-level descriptors for detecting pedestrians in far infrared images. LSK is specifically designed to deal with intrinsic image noise and pixel level uncertainty by capturing local image geometry succinctly instead of collecting local orientation statistics (e...
May 18, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28541186/distributed-patterns-of-brain-activity-underlying-real-time-fmri-neurofeedback-training
#17
Rotem Kopel, Kirsten Emmert, Frank Scharnowski, Sven Haller, Dimitri Van De Ville
Neurofeedback (NF) based on real-time functional magnetic resonance imaging (rt-fMRI) is an exciting neuroimaging application. In most rt-fMRI NF studies, the activity level of a single region of interest (ROI) is provided as a feedback signal and the participants are trained to up or down regulate the feedback signal. NF training effects are typically analyzed using a confirmatory univariate approach, i.e., changes in the target ROI are explained by a univariate linear modulation. However, learning to self-regulate the ROI activity through NF is mediated by distributed changes across the brain...
June 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28540667/neurocognitive-functioning-in-pediatric-craniopharyngioma-performance-before-treatment-with-proton-therapy
#18
Ashley S Fournier-Goodnight, Jason M Ashford, Thomas E Merchant, Frederick A Boop, Daniel J Indelicato, Lei Wang, Hui Zhang, Heather M Conklin
The goal of this study was to investigate the impact of patient-, disease-, and treatment-related variables upon neurocognitive outcomes in pediatric patients with craniopharyngioma prior to treatment with proton therapy or observation after radical resection. For all participants (N = 104), relevant clinical and demographic variables were attained and neurocognitive evaluations completed prior to irradiation or planned observation. One-sample t-tests were conducted to compare performance to published normative data...
May 24, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28540525/identification-of-22q11-2-deletion-syndrome-via-newborn-screening-for-severe-combined-immunodeficiency
#19
Jessica C Barry, Terrence Blaine Crowley, Soma Jyonouchi, Jennifer Heimall, Elaine H Zackai, Kathleen E Sullivan, Donna M McDonald-McGinn
PURPOSE: Chromosome 22q11.2 deletion syndrome (22q11.2DS), the most common cause of DiGeorge syndrome, is quite variable. Neonatal diagnosis traditionally relies on recognition of classic features and cytogenetic testing, but many patients come to attention only following identification of later onset conditions, such as hypernasal speech due to palatal insufficiency and developmental and behavioral differences including speech delay, autism, and learning disabilities that would benefit from early interventions...
May 24, 2017: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/28540479/the-role-of-learning-in-sensory-motor-modality-switching
#20
Simone Schaeffner, Iring Koch, Andrea M Philipp
Previous research has indicated that modality switching is considerably affected by modality compatibility. It has been shown that switch costs are higher for switching between relatively incompatible sensory-motor modality mappings (i.e., auditory-manual and visual-vocal) compared to switching between compatible mappings (i.e., auditory-vocal and visual-manual). So far, however, it has been unclear whether these findings are influenced by learning processes resulting from very small stimulus sets and a large number of stimulus repetitions...
May 24, 2017: Psychological Research
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