keyword
MENU ▼
Read by QxMD icon Read
search

Temporal patterning

keyword
https://www.readbyqxmd.com/read/28724197/discrimination-and-characterization-of-two-mediterranean-species-from-the-laurencia-complex-rhodomelacea-using-an-nmr-based-metabolomic-approach
#1
Sylvain Sutour, Hélène Esselin, Ange Bighelli, Joseph Casanova, Line Le Gall, Félix Tomi
Generic and specific determination among the Laurencia complex is a challenging task. DNA barcoding combined with phenotypic investigations are mandatory for species differentiation. In this study, two morphologically different members of the Laurencia complex were investigated using untargeted (1) H NMR-based metabolomics. Twenty-one population samples were collected in order to evaluate both temporal and geographical homogeneity. Data obtained from (1) H NMR analysis followed by statistical analysis allowed a clear separation of all the samples into two groups...
July 19, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28724087/nitrate-leaching-from-winter-cereal-cover-crops-using-undisturbed-soil-column-lysimeters
#2
John J Meisinger, Kristin A Ricigliano
Cover crops are important management practices for reducing nitrogen (N) leaching, especially in the Chesapeake Bay watershed, which is under total maximum daily load (TMDL) restraints. Winter cereals are common cool-season crops in the Bay watershed, but studies have not directly compared nitrate-N (NO-N) leaching losses from these species. A 3-yr cover crop lysimeter study was conducted in Beltsville, MD, to directly compare NO-N leaching from a commonly grown cultivar of barley ( L.), rye ( L.), and wheat ( L...
May 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28723936/social-sensing-of-urban-land-use-based-on-analysis-of-twitter-users-mobility-patterns
#3
Aiman Soliman, Kiumars Soltani, Junjun Yin, Anand Padmanabhan, Shaowen Wang
A number of recent studies showed that digital footprints around built environments, such as geo-located tweets, are promising data sources for characterizing urban land use. However, challenges for achieving this purpose exist due to the volume and unstructured nature of geo-located social media. Previous studies focused on analyzing Twitter data collectively resulting in coarse resolution maps of urban land use. We argue that the complex spatial structure of a large collection of tweets, when viewed through the lens of individual-level human mobility patterns, can be simplified to a series of key locations for each user, which could be used to characterize urban land use at a higher spatial resolution...
2017: PloS One
https://www.readbyqxmd.com/read/28721883/patterns-of-care-for-patients-with-early-stage-glottic-cancer-undergoing-definitive-radiation-therapy-a-national-cancer-database-analysis
#4
William A Stokes, Diana Abbott, Andy Phan, David Raben, Ryan M Lanning, Sana D Karam
PURPOSE: To characterize practice patterns, including temporal trends, in fractionation schedules among patients in the United States undergoing definitive radiation therapy for early-stage glottic cancer and to compare overall survival outcomes between fractionation schedules. METHODS AND MATERIALS: We queried the National Cancer Database for patients with TisN0M0, T1N0M0, or T2N0M0 squamous cell carcinoma of the glottic larynx diagnosed between 2004 and 2012 and undergoing definitive radiation therapy...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28721521/expression-patterns-of-the-native-shrunken-2-promoter-in-sorghum-bicolor-visualised-through-use-of-the-gfp-reporter-gene
#5
Kyle C Lamont, Stephen R Mudge, Guoquan Liu, Ian D Godwin
The AGPase large subunit (shrunken-2) promoter was demonstrated to be active in the placentochalaza and endosperm of developing grain as well as the root tips in transgenic sorghum. The temporal and spatial expression patterns of the Sorghum bicolor Shrunken-2 (Sh2) promoter were evaluated using the green fluorescence protein reporter gene (gfp) in transgenic sorghum, within the context of upregulating starch biosynthesis in the developing grain. GFP fluorescence was analysed throughout development in various tissue types using confocal laser scanning microscopy techniques...
July 18, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28720886/spatio-temporal-variations-of-typhoid-and-paratyphoid-fevers-in-zhejiang-province-china-from-2005-to-2015
#6
Hua Gu, Wenjie Fan, Kui Liu, Shuwen Qin, Xiuyang Li, Jianmin Jiang, Enfu Chen, Yibiao Zhou, Qingwu Jiang
Typhoid and paratyphoid are two common enteric infectious diseases with serious gastrointestinal symptoms. Data was collected of the registered cases in Zhejiang Province from 2005 to 2015. The epidemiological characteristics were investigated and high-risk regions were detected with descriptive epidemiological methods and in-depth spatio-temporal statistics. A sharp decline in the incidences of both diseases was observed. The seasonal patterns were identified with typhoid and paratyphoid, one in summer from May to September was observed from 2005 to 2010 and the other lesser one in spring from January to March only observed from 2005 to 2007...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720811/some-coral-diseases-track-climate-oscillations-in-the-caribbean
#7
C J Randall, R van Woesik
Disease outbreaks continue to reduce coral populations worldwide. Understanding coral diseases and their relationships with environmental drivers is necessary to forecast disease outbreaks, and to predict future changes in coral populations. Yet, the temporal dynamics of coral diseases are rarely reported. Here we evaluate trends and periodicities in the records of three common coral diseases (white-band disease, yellow-band disease, and dark-spot syndrome) that were surveyed between 1997 and 2014 at 2082 sites throughout the Caribbean...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720760/exploring-spatial-and-temporal-trends-in-the-soundscape-of-an-ecologically-significant-embayment
#8
R L Putland, R Constantine, C A Radford
The Hauraki Gulf, a shallow embayment in north-eastern New Zealand, provides an interesting environment for ecological soundscape research. It is situated on a tectonic plate boundary, contains one of the busiest ports in the southern hemisphere and is home to a diverse range of soniferous animals. The underwater soundscape was monitored for spatial and temporal trends at six different listening stations using passive acoustic recorders. The RMS sound pressure level of ambient sound (50-24,000 Hz) at the six listening stations was similar, ranging from 90-110 dB re 1 μPa throughout the recording period...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720706/broadly-expressed-repressors-integrate-patterning-across-orthogonal-axes-in-embryos
#9
Theodora Koromila, Angelike Stathopoulos
The role of spatially localized repressors in supporting embryonic patterning is well appreciated, but, alternatively, the role ubiquitously expressed repressors play in this process is not well understood. We investigated the function of two broadly expressed repressors, Runt (Run) and Suppressor of Hairless [Su(H)], in patterning the Drosophila embryo. Previous studies have shown that Run and Su(H) regulate gene expression along anterior-posterior (AP) or dorsal-ventral (DV) axes, respectively, by spatially limiting activator action, but here we characterize a different role...
July 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28720482/time-to-go-bigger-emerging-patterns-in-macrogenetics
#10
Simon Blanchet, Jérôme G Prunier, Hanne De Kort
The increasing availability of large-scale and high-resolution data sets in population genetics is moving the field toward a novel research agenda. Here, we show how this shift toward macrogenetics should generate new perspectives and theories allowing the description, understanding, and prediction of patterns of genetic diversity at broad spatial, temporal, and taxonomic scales.
July 15, 2017: Trends in Genetics: TIG
https://www.readbyqxmd.com/read/28718203/landscape-effects-on-pollination-networks-in-mediterranean-gypsum-islands
#11
Silvia Santamaría, Ana M Sánchez, Jesús López-Angulo, Concepción Ornosa, Iñaki Mola, Adrián Escudero
Habitat fragmentation is a major driver of global change that has operated historically on Mediterranean ecosystems. However, more needs to be understood about how fragmentation influences ecological interactions, particularly pollination. Gypsum outcrops are historically fragmented Mediterranean habitats and settings for the evolution of many endangered soil-specialist plants with narrow ranges. In this study, we aimed to determine how fragmentation (area and connectivity) affects: (i) the pollinator community composition, and (ii) the structural properties of pollination networks; and whether there are differences in the effects of fragmentation on: (iii) the number of interactions and visits among pollinator functional groups; and (iv) the number of interactions and specialization degree between soil-specialist and soil-generalist plants...
July 17, 2017: Plant Biology
https://www.readbyqxmd.com/read/28718202/patterns-of-mortality-in-a-montane-mixed-conifer-forest-in-san-diego-county-california
#12
Mary Pyott Freeman, Douglas A Stow, Li An
We examine spatial patterns of conifer tree mortality and their changes over time for the montane mixed-conifer forests of San Diego County. These forest areas have recently experienced extensive tree mortality due to multiple factors. A spatial contextual image processing approach was utilized with high spatial resolution digital airborne imagery to map dead trees for the years 1997, 2000, 2002, and 2005 for three study areas: Palomar, Volcan, and Laguna mountains. Plot-based fieldwork was conducted to further assess mortality patterns...
July 17, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28717952/temporal-pattern-of-circulating-antigens-and-antibody-responses-in-cats-experimentally-infected-with-dirofilaria-immitis
#13
Kris Curtis, Tom O'Connor, Leif Lorentzen, John McCall, Michael Tillson, Ray Dillon, Ramaswamy Chandrashekar
No abstract text is available yet for this article.
July 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28716718/multivariate-pattern-analysis-of-meg-and-eeg-a-comparison-of-representational-structure-in-time-and-space
#14
Radoslaw Martin Cichy, Dimitrios Pantazis
Multivariate pattern analysis of magnetoencephalography (MEG) and electroencephalography (EEG) data can reveal the rapid neural dynamics underlying cognition. However, MEG and EEG have systematic differences in sampling neural activity. This poses the question to which degree such measurement differences consistently bias the results of multivariate analysis applied to MEG and EEG activation patterns. To investigate, we conducted a concurrent MEG/EEG study while participants viewed images of everyday objects...
July 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28716638/the-temporal-dynamics-of-miniscleral-contact-lenses-central-corneal-clearance-and-centration
#15
Stephen J Vincent, David Alonso-Caneiro, Michael J Collins
PURPOSE: To examine the time course of the reduction in central corneal clearance and horizontal and vertical lens translation (decentration) during miniscleral contact lens wear and the theoretical influence upon the optics of the post-lens tear layer. METHODS: Repeated high-resolution OCT images were captured over an 8h period of miniscleral contact lens wear (using a rotationally symmetric 16.5mm diameter lens) in 15 young, healthy participants with normal corneae...
July 14, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28716037/phylogeny-expression-patterns-and-regulation-of-dna-methyltransferases-in-early-development-of-the-flatfish-solea-senegalensis
#16
Joana Firmino, Carlos Carballo, Paula Armesto, Marco A Campinho, Deborah M Power, Manuel Manchado
BACKGROUND: The identification of DNA methyltransferases (Dnmt) expression patterns during development and their regulation is important to understand the epigenetic mechanisms that modulate larval plasticity in marine fish. In this study, dnmt1 and dnmt3 paralogs were identified in the flatfish Solea senegalensis and expression patterns in early developmental stages and juveniles were determined. Additionally, the regulation of Dnmt transcription by a specific inhibitor (5-aza-2'-deoxycytidine) and temperature was evaluated...
July 17, 2017: BMC Developmental Biology
https://www.readbyqxmd.com/read/28715907/selective-effects-of-psychotherapy-on-frontopolar-cortical-function-in-ptsd
#17
Gregory A Fonzo, Madeleine S Goodkind, Desmond J Oathes, Yevgeniya V Zaiko, Meredith Harvey, Kathy K Peng, M Elizabeth Weiss, Allison L Thompson, Sanno E Zack, Colleen E Mills-Finnerty, Benjamin M Rosenberg, Raleigh Edelstein, Rachael N Wright, Carena A Kole, Steven E Lindley, Bruce A Arnow, Booil Jo, James J Gross, Barbara O Rothbaum, Amit Etkin
OBJECTIVE: Exposure therapy is an effective treatment for posttraumatic stress disorder (PTSD), but a comprehensive, emotion-focused perspective on how psychotherapy affects brain function is lacking. The authors assessed changes in brain function after prolonged exposure therapy across three emotional reactivity and regulation paradigms. METHOD: Individuals with PTSD underwent functional MRI (fMRI) at rest and while completing three tasks assessing emotional reactivity and regulation...
July 18, 2017: American Journal of Psychiatry
https://www.readbyqxmd.com/read/28715507/independent-component-analysis-ica-based-clustering-of-temporal-rna-seq-data
#18
Moysés Nascimento, Fabyano Fonseca E Silva, Thelma Sáfadi, Ana Carolina Campana Nascimento, Talles Eduardo Maciel Ferreira, Laís Mayara Azevedo Barroso, Camila Ferreira Azevedo, Simone Eliza Faccione Guimarães, Nick Vergara Lopes Serão
Gene expression time series (GETS) analysis aims to characterize sets of genes according to their longitudinal patterns of expression. Due to the large number of genes evaluated in GETS analysis, an useful strategy to summarize biological functional processes and regulatory mechanisms is through clustering of genes that present similar expression pattern over time. Traditional cluster methods usually ignore the challenges in GETS, such as the lack of data normality and small number of temporal observations...
2017: PloS One
https://www.readbyqxmd.com/read/28715435/spatial-patterns-of-dengue-cases-in-brazil
#19
Fernando Jose Antonio, Andreia Silva Itami, Sergio de Picoli, Jorge Juarez Vieira Teixeira, Renio Dos Santos Mendes
Dengue infection plays a central role in our society, since it is the most prevalent vector-borne viral disease affecting humans. We statistically investigated patterns concerning the spatial spreading of dengue epidemics in Brazil, as well as their temporal evolution in all Brazilian municipalities for a period of 12 years. We showed that the distributions of cases in municipalities follow power laws persistent in time and that the infection scales linearly with the population of the municipalities. We also found that the average number of dengue cases does not have a clear dependence on the longitudinal position of municipalities...
2017: PloS One
https://www.readbyqxmd.com/read/28715373/new-methods-to-study-gustatory-coding
#20
Alejandra Boronat-García, Sam Reiter, Kui Sun, Mark Stopfer
The sense of taste allows animals to detect chemicals in the environment, giving rise to behaviors critical for survival. When Gustatory Receptor Neurons (GRNs) detect tastant molecules, they encode information about the identity and concentration of the tastant as patterns of electrical activity that then propagate to follower neurons in the brain. These patterns constitute internal representations of the tastant, which then allow the animal to select actions and form memories. The use of relatively simple animal models has been a powerful tool to study basic principles in sensory coding...
June 29, 2017: Journal of Visualized Experiments: JoVE
keyword
keyword
72582
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"