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Articles 1 - 6 of 6
Full-Text Articles in Entire DC Network
Large-Scale Differences In Microbial Biodiversity Discovery Between 16s Amplicon And Shotgun Sequencing, Michael Tessler, Johannes S. Neumann, Ebrahim Afshinnekoo, Michael Pineda, Rebecca Hersch, Luiz Felipe M. Velgo, Bianca T. Segovia, Fabio A. Lansac-Toha, Michael Lemke, Rob Desalle, Christopher E. Mason, Mercer R. Brugler
Large-Scale Differences In Microbial Biodiversity Discovery Between 16s Amplicon And Shotgun Sequencing, Michael Tessler, Johannes S. Neumann, Ebrahim Afshinnekoo, Michael Pineda, Rebecca Hersch, Luiz Felipe M. Velgo, Bianca T. Segovia, Fabio A. Lansac-Toha, Michael Lemke, Rob Desalle, Christopher E. Mason, Mercer R. Brugler
Publications and Research
Modern metagenomic environmental DNA studies are almost completely reliant on next-generation sequencing, making evaluations of these methods critical. We compare two next-generation sequencing techniques – amplicon and shotgun – on water samples across four of Brazil’s major river floodplain systems (Amazon, Araguaia, Paraná, and Pantanal). Less than 50% of phyla identified via amplicon sequencing were recovered from shotgun sequencing, clearly challenging the dogma that mid-depth shotgun recovers more diversity than amplicon-based approaches. Amplicon sequencing also revealed ~27% more families. Overall the amplicon data were more robust across both biodiversity and community ecology analyses at different taxonomic scales. Our work doubles …
Incorporating Place And Space: A Hierarchical Spatial Approach To Exploring Preventable Congestive Heart Failure Hospitalizations In New York City, Rachael Weiss Riley
Incorporating Place And Space: A Hierarchical Spatial Approach To Exploring Preventable Congestive Heart Failure Hospitalizations In New York City, Rachael Weiss Riley
Dissertations and Theses
Background: Faced with rising medical care costs, increasing prevalence, and widening health disparities, preventing congestive heart failure (CHF) hospitalizations is a central public health concern. Despite evidence of geographical clustering in preventable CHF admissions, there is a lack of research designed to examine spatial patterning of CHF and the local area neighborhood determinants that contribute to this variability. This study sought to assess and evaluate the importance of both space and place in analyzing preventable CHF hospitalizations and readmissions by applying appropriate statistical techniques, clarifying the assumption inherent in each method, and interpreting the findings within the context of existing …
Acute Memory And Psychotomimetic Effects Of Cannabis And Tobacco Both ‘Joint’ And Individually: A Placebo-Controlled Trial, C. Hindocha, T. P. Freeman, J. X. Xia, N. D. C. Shaban, H. V. Curran
Acute Memory And Psychotomimetic Effects Of Cannabis And Tobacco Both ‘Joint’ And Individually: A Placebo-Controlled Trial, C. Hindocha, T. P. Freeman, J. X. Xia, N. D. C. Shaban, H. V. Curran
Publications and Research
Background. Cannabis and tobacco have contrasting cognitive effects. Smoking cannabis with tobacco is prevalent in many countries and although this may well influence cognitive and mental health outcomes, the possibility has rarely been investigated in human experimental psychopharmacological research.
Method. The individual and interactive effects of cannabis and tobacco were evaluated in 24 non-dependent cannabis and tobacco smokers in a randomized, placebo-controlled, double-blind, 2 (cannabis, placebo) × 2 (tobacco, placebo) crossover design. Verbal memory (prose recall), working memory (WM) performance including maintenance, manipulation and attention (N-back), psychotomimetic, subjective and cardiovascular measures were recorded on each of four sessions.
Results. Cannabis …
Ecological Correlations Of Dietary Food Intake And Mental Health Disorders, Jordan Hoerr, Joshua Fogel, Benjamin Van Voorhees
Ecological Correlations Of Dietary Food Intake And Mental Health Disorders, Jordan Hoerr, Joshua Fogel, Benjamin Van Voorhees
Publications and Research
This paper examines the ecological association of dietary food intake with mental health outcomes on the group level across countries. Published data from the World Mental Health Survey were used to compare lifetime prevalence of four categories of mental health disorders (anxiety disorders, mood disorders, impulse control disorders, and substance use disorders) with a country’s fish/seafood and sugar/sweetener supply quantity using the Spearman rank correlation. Data were compared for 17 countries across the world. Sugar and sweetener supply quantity was significantly and positively associated with anxiety disorders (rho = 0.75, p = 0.001), mood disorders (rho = 0.75, p = …
Gait Changes In A Line Of Mice Artificially Selected For Longer Limbs, Leah M. Sparrow, Emily Pellattt, Sabrina S. Yu, David A. Raichlen, Herman Pontzer, Campbell Rolian
Gait Changes In A Line Of Mice Artificially Selected For Longer Limbs, Leah M. Sparrow, Emily Pellattt, Sabrina S. Yu, David A. Raichlen, Herman Pontzer, Campbell Rolian
Publications and Research
In legged terrestrial locomotion, the duration of stance phase, i.e., when limbs are in contact with the substrate, is positively correlated with limb length, and negatively correlated with the metabolic cost of transport. These relationships are well documented at the interspecific level, across a broad range of body sizes and travel speeds. However, such relationships are harder to evaluate within species (i.e., where natural selection operates), largely for practical reasons, including low population variance in limb length, and the presence of confounding factors such as body mass, or training. Here, we compared spatiotemporal kinematics of gait in Longshanks, a long-legged …
Are Weevils Picky Eaters? Community Structure And Host Specificity Of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae), Jhunior A. Morillo
Are Weevils Picky Eaters? Community Structure And Host Specificity Of Neotropical Saproxylic Beetles (Coleoptera: Curculionidae), Jhunior A. Morillo
Dissertations and Theses
Abstract Primary saproxylic beetles play a major role in forest nutrient cycling and making deadwood accessible to other decomposers. Understanding beetle host preferences and patterns of community assembly is critical for their conservation, and for predicting which species might become invasive. This project aims to investigate the ecological and host specificity, as well as the community composition of curculionids in a mosaic of old-growth (OG) and secondary forest on the Osa Peninsula, Costa Rica. The subfamily Scolytinae was expected to be the most species-rich and abundant. Ambrosia beetles were expected to have more generalist species than other curculionids. Old growth …