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https://www.readbyqxmd.com/read/28637917/degree-heterogeneity-and-stability-of-ecological-networks
#1
Gang Yan, Neo D Martinez, Yang-Yu Liu
A classic measure of ecological stability describes the tendency of a community to return to equilibrium after small perturbations. While many advances show how the network architecture of these communities severely constrains such tendencies, one of the most fundamental properties of network structure, i.e. degree heterogeneity-the variability of the number of links associated with each species, deserves further study. Here we show that the effects of degree heterogeneity on stability vary with different types of interspecific interactions...
June 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28623024/functional-diversity-of-aquatic-ciliates
#2
REVIEW
Thomas Weisse
This paper first reviews the concept of functional diversity in general terms and then applies it to free-living aquatic ciliates. Ciliates are extremely versatile organisms and display an enormous functional diversity as key elements of pelagic food webs, acting as predators of bacteria, algae, other protists and even some metazoans. Planktonic ciliates are important food for zooplankton, and mixotrophic and functionally autotrophic species may significantly contribute to primary production in the ocean and in lakes...
April 13, 2017: European Journal of Protistology
https://www.readbyqxmd.com/read/28617645/the-implications-of-eco-evolutionary-processes-for-the-emergence-of-marine-plankton-community-biogeography
#3
Boris Sauterey, Ben Ward, Jonathan Rault, Chris Bowler, David Claessen
Models of community assembly have been used to illustrate how the many functionally diverse species that compose plankton food webs can coexist. However, the evolutionary processes leading to the emergence of plankton food webs and their interplay with migratory processes and spatial heterogeneity are yet to be explored. We study the eco-evolutionary dynamics of a modeled plankton community structured in both size and space and physiologically constrained by empirical data. We demonstrate that a complex yet ecologically and evolutionarily stable size-structured food web can emerge from an initial set of two monomorphic phytoplankton and zooplankton populations...
July 2017: American Naturalist
https://www.readbyqxmd.com/read/28610996/from-cheminformatics-to-structure-based-design-web-services-and-desktop-applications-based-on-the-naomi-library
#4
Stefan Bietz, Therese Inhester, Florian Lauck, Kai Sommer, Mathias M von Behren, Rainer Fährrolfes, Florian Flachsenberg, Agnes Meyder, Eva Nittinger, Thomas Otto, Matthias Hilbig, Karen T Schomburg, Andrea Volkamer, Matthias Rarey
Nowadays, computational approaches are an integral part of life science research. Problems related to interpretation of experimental results, data analysis, or visualization tasks highly benefit from the achievements of the digital era. Simulation methods facilitate predictions of physicochemical properties and can assist in understanding macromolecular phenomena. Here, we will give an overview of the methods developed in our group that aim at supporting researchers from all life science areas. Based on state-of-the-art approaches from structural bioinformatics and cheminformatics, we provide software covering a wide range of research questions...
June 10, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28600279/frequencies-of-private-mentions-and-sharing-of-mammography-and-breast-cancer-terms-on-facebook-a-pilot-study
#5
Marco Huesch, Alison Chetlen, Joel Segel, Susann Schetter
BACKGROUND: The most popular social networking site in the United States is Facebook, an online forum where circles of friends create, share, and interact with each other's content in a nonpublic way. OBJECTIVE: Our objectives were to understand (1) the most commonly used terms and phrases relating to breast cancer screening, (2) the most commonly shared website links that other women interacted with, and (3) the most commonly shared website links, by age groups...
June 9, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28593723/imbalanced-nutrient-recycling-in-a-warmer-ocean-driven-by-differential-response-of-extracellular-enzymatic-activities
#6
Begoña Ayo, Naiara Abad, Itxaso Artolozaga, Iñigo Azua, Zuriñe Baña, Marian Unanue, Josep M Gasol, Carlos M Duarte, Juan Iriberri
Ocean oligotrophication concurrent with warming weakens the capacity of marine primary producers to support marine food webs and act as a CO2 sink, and is believed to result from reduced nutrient inputs associated to the stabilization of the thermocline. However, nutrient supply in the oligotrophic ocean is largely dependent on the recycling of organic matter. This involves hydrolytic processes catalyzed by extracellular enzymes released by bacteria, which temperature-dependence has not yet been evaluated. Here we report a global assessment of the temperature-sensitivity, as represented by the activation energies (Ea ), of extracellular β-glucosidase (βG), leucine aminopeptidase (LAP) and alkaline phosphatase (AP) enzymatic activities, which enable the uptake by bacteria of substrates rich in carbon, nitrogen and phosphorus, respectively...
June 7, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28588530/do-online-privacy-concerns-predict-selfie-behavior-among-adolescents-young-adults-and-adults
#7
Amandeep Dhir, Torbjørn Torsheim, Ståle Pallesen, Cecilie S Andreassen
Selfies, or self-portraits, are often taken and shared on social media for online self-presentation reasons, which are considered essential for the psychosocial development and well-being of people in today's culture. Despite the growing popularity and widespread sharing of selfies in the online space, little is known about how privacy concerns moderate selfie behavior. In addition to this, it is also not known whether privacy concerns across age and gender groups influence selfie behavior. To address this timely issue, a survey assessing common selfie behaviors, that is, frequency of taking (individual and group selfies), editing (cropping and filtering), and posting selfies online, and social media privacy concerns (over personal data being accessed and misused by third parties) was conducted...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28585719/toward-a-community-ecology-of-landscapes-predicting-multiple-predator-prey-interactions-across-geographic-space
#8
Oswald J Schmitz, Jennifer R B Miller, Anne M Trainor, Briana Abrahms
Community ecology was traditionally an integrative science devoted to studying interactions between species and their abiotic environments in order to predict species' geographic distributions and abundances. Yet for philosophical and methodological reasons it has become divided into two enterprises: one devoted to local experimentation on species interactions to predict community dynamics; the other devoted to statistical analyses of abiotic and biotic information to describe geographic distribution. Our goal here is to instigate thinking about ways to reconnect the two enterprises and thereby return to a tradition to do integrative science...
June 6, 2017: Ecology
https://www.readbyqxmd.com/read/28585437/a-new-species-of-the-genus-amolops-anura-ranidae-from-high-altitude-sichuan-southwestern-china-with-a-discussion-on-the-taxonomic-status-of-amolops-kangtingensis
#9
Liang Fei, Chang-Yuan Ye, Yu-Fan Wang, Ke Jiang
A new species of the genus Amolops Cope, 1865 is described from Xinduqiao, Kangding, Sichuan. It was previously identified as Amolops kangtingensis, which is synonymized to Amolops mantzorum in this study. The new species, Amolops xinduqiao sp. nov., is distinguished from all other congeners by the following combination of characters: (1) medium body size, adult males SVL 41.2-47.5 mm ( n=15, average 43.9 mm), adult females SVL 48.5-56.6 mm ( n=15, average 52.5 mm); (2) head length equal to width or slightly wider than long; (3) tympanum small, but distinct; (4) vomerine teeth in two tiny rows, separated by a space about one vomerine teeth row; (5) bony projections on lower jaw absent; (6) dorsolateral folds usually absent; (7) tarsal folds or glands on tarsus absent; (8) circummarginal groove on disc of finger I absent; (9) tibiotarsal articulation reaching nostril or beyond; (10) webs of toe IV reaching to distal articulation, other toes fully webbed to disc; and (11) vocal sac absent in males...
May 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28569543/the-effects-of-attractiveness-and-source-expertise-on-online-health-sites
#10
Wan S Jung, Mun-Young Chung, E Soo Rhee
The surface characteristics (presentational or design elements) of online content have been the focus of a growing body of credibility literature in recent decades. However, since the online health information communities such as WebMD do not provide any design options when writing comments on the original post, how the simplistic presentational of comments (e.g., spacing, bullet-points, labeling, and line breaks) can affect web users' responses was examined. Our study found that minimal variations in the presentation of online contents can influence assessments of their credibility and behavioral intentions...
June 1, 2017: Health Communication
https://www.readbyqxmd.com/read/28546958/effect-of-functional-appliances-on-the-airway-dimensions-in-patients-with-skeletal-class-ii-malocclusion-a-systematic-review
#11
Annapurna Kannan, Haritha Pottipalli Sathyanarayana, Sridevi Padmanabhan
OBJECTIVES: The aim of the present systematic review was to assess the effect of functional appliances on the airway dimensions in patients with skeletal Class II malocclusion. MATERIALS AND METHODS: Articles were identified through a literature survey carried out through the following databases: (1) PUBMED, (2) Google Scholar, (3) The Cochrane Library, (4) Embase, (5) Lilac, and (6) Web of Scholars. The systematic review analyzed 12 articles comprising removable functional appliances, 3 articles with fixed functional appliances, and 2 articles having both fixed and removable functional appliances...
April 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28542601/the-epidemiology-of-staphylococcus-aureus-carriage-in-patients-attending-inner-city-sexually-transmitted-infections-and-community-clinics-in-calgary-canada
#12
Alejandra Ugarte Torres, Angel Chu, Ron Read, Judy MacDonald, Daniel Gregson, Thomas Louie, Johanna Delongchamp, Linda Ward, Joann McClure, Kunyan Zhang, John Conly
BACKGROUND: Although the nares represent the most common carriage site for traditional hospital-associated strains of Staphylococcus aureus (SA), the predominant site of carriage of SA in the community is less certain. METHODS: We conducted a cross-sectional study in 285 patients attending sexually transmitted diseases and inner-city clinics to evaluate the prevalence, body site colonisation and risk factors associated with carriage of methicillin susceptible SA (MSSA)...
2017: PloS One
https://www.readbyqxmd.com/read/28532485/multidimensional-scaling-of-diffuse-gliomas-application-to-the-2016-world-health-organization-classification-system-with-prognostically-relevant-molecular-subtype-discovery
#13
Patrick J Cimino, Michael Zager, Lisa McFerrin, Hans-Georg Wirsching, Hamid Bolouri, Bettina Hentschel, Andreas von Deimling, David Jones, Guido Reifenberger, Michael Weller, Eric C Holland
Recent updating of the World Health Organization (WHO) classification of central nervous system (CNS) tumors in 2016 demonstrates the first organized effort to restructure brain tumor classification by incorporating histomorphologic features with recurrent molecular alterations. Revised CNS tumor diagnostic criteria also attempt to reduce interobserver variability of histological interpretation and provide more accurate stratification related to clinical outcome. As an example, diffuse gliomas (WHO grades II-IV) are now molecularly stratified based upon isocitrate dehydrogenase 1 or 2 (IDH) mutational status, with gliomas of WHO grades II and III being substratified according to 1p/19q codeletion status...
May 22, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28524117/ebutterfly-leveraging-massive-online-citizen-science-for-butterfly-consevation
#14
Kathleen L Prudic, Kent P McFarland, Jeffrey C Oliver, Rebecca A Hutchinson, Elizabeth C Long, Jeremy T Kerr, Maxim Larrivée
Data collection, storage, analysis, visualization, and dissemination are changing rapidly due to advances in new technologies driven by computer science and universal access to the internet. These technologies and web connections place human observers front and center in citizen science-driven research and are critical in generating new discoveries and innovation in such fields as astronomy, biodiversity, and meteorology. Research projects utilizing a citizen science approach address scientific problems at regional, continental, and even global scales otherwise impossible for a single lab or even a small collection of academic researchers...
May 18, 2017: Insects
https://www.readbyqxmd.com/read/28511646/emergence-of-microbial-diversity-due-to-cross-feeding-interactions-in-a-spatial-model-of-gut-microbial-metabolism
#15
Milan J A van Hoek, Roeland M H Merks
BACKGROUND: The human gut contains approximately 10(14) bacteria, belonging to hundreds of different species. Together, these microbial species form a complex food web that can break down nutrient sources that our own digestive enzymes cannot handle, including complex polysaccharides, producing short chain fatty acids and additional metabolites, e.g., vitamin K. Microbial diversity is important for colonic health: Changes in the composition of the microbiota have been associated with inflammatory bowel disease, diabetes, obesity and Crohn's disease, and make the microbiota more vulnerable to infestation by harmful species, e...
May 16, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28507859/the-double-volar-flap-technique-for-aesthetic-repair-of-syndactyly-and-polysyndactyly-of-toe-without-skin-grafting
#16
Toru Miyanaga, Kenichi Shimada, Miyuki Kishibe, Masanobu Yamashita, Akiko Yamashita
BACKGROUND: Aesthetic repair of syndactyly of the toes is desirable because patients may have psychological concerns about its appearance. There are 2 important factors for the aesthetic repair of syndactyly of the toe. One is to hide the operative scar from the visual site (dorsal site), whereas the other is to create an interdigital space close to the normal anatomical skin characteristics (2 general types of skin: glabrous and hairy). METHODS: In total, 12 patients (4 males and 8 females) with 15 syndactylous webs were operated on by using the double volar flap technique...
April 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28498966/genprobis-web-server-for-mapping-of-sequence-variants-to-protein-binding-sites
#17
Janez Konc, Blaz Skrlj, Nika Erzen, Tanja Kunej, Dusanka Janezic
Discovery of potentially deleterious sequence variants is important and has wide implications for research and generation of new hypotheses in human and veterinary medicine, and drug discovery. The GenProBiS web server maps sequence variants to protein structures from the Protein Data Bank (PDB), and further to protein-protein, protein-nucleic acid, protein-compound, and protein-metal ion binding sites. The concept of a protein-compound binding site is understood in the broadest sense, which includes glycosylation and other post-translational modification sites...
May 11, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28494745/global-view-on-rare-diseases-a-mini-review
#18
Blanka Klimova, Martin Valis, Michael Storek, Kamil Kuca
BACKGROUND: Rare diseases are often serious, life-threatening and debilitating group of disorders. Nowadays, there are approximately 8,000 rare diseases and it is estimated that 350 million people are affected by these conditions worldwide. Unfortunately, rare diseases are quite complex and chronic, only a small number of these diseases can be relevantly diagnosed and treated, and lifelong treatment is often required. OBJECTIVE: The purpose of this mini review is to explore the issue of rare diseases, describe their classification, discuss the current treatment and management and set future research in this field...
May 10, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28487275/a-phenome-database-neauhlfpd-designed-and-constructed-for-broiler-lines-divergently-selected-for-abdominal-fat-content
#19
Li Min, Dong Xiangyu, Liang Hao, Leng Li, Zhang Hui, Wang Shouzhi, Li Hui, Du Zhi-Qiang
Effective management and analysis of precisely recorded phenotypic traits are important components of the selection and breeding of superior livestocks. Over two decades, we divergently selected chicken lines for abdominal fat content at Northeast Agricultural University (Northeast Agricultural University High and Low Fat, NEAUHLF), and collected large volume of phenotypic data related to the investigation on molecular genetic basis of adipose tissue deposition in broilers. To effectively and systematically store, manage and analyze phenotypic data, we built the NEAUHLF Phenome Database (NEAUHLFPD)...
May 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28485226/web-review-arthur-s-place
#20
Simon Stones
A similar Facebook group, Arthur's Place, provides a space for people with RMDs aged up to 35 to support each other.
May 9, 2017: Nursing Children and Young People
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