Results 71 to 80 of about 170,127 (368)

TAXON version 1.1: A simple way to generate uniform and fractionally weighted three-item matrices from various kinds of biological data [PDF]

open access: yes, 2012
An open-access program allowing three-item statement matrices to be generated from data such as molecular sequences does not exist so far. The recently developed LisBeth package (ver. 1.0) allows representing hypotheses of homology among taxa or areas directly as rooted trees or as hierarchies; however, this is not a standard matrix-based platform ...
arxiv   +1 more source

Variational Bayesian Supertrees [PDF]

open access: yesarXiv, 2021
Given overlapping subsets of a set of taxa (e.g. species), and posterior distributions on phylogenetic tree topologies for each of these taxon sets, how can we infer a posterior distribution on phylogenetic tree topologies for the entire taxon set? Although the equivalent problem for in the non-Bayesian case has attracted substantial research, the ...
arxiv  

A Simple Explanation for Taxon Abundance Patterns [PDF]

open access: yesProc. Nat. Acad. Sci. 96 (1999) 15017, 2000
For taxonomic levels higher than species, the abundance distributions of number of subtaxa per taxon tend to approximate power laws, but often show strong deviationns from such a law. Previously, these deviations were attributed to finite-time effects in a continuous time branching process at the generic level.
arxiv   +1 more source

Taxon names and varieties of reference [PDF]

open access: yesHistory and Philosophy of the Life Sciences, 2021
Linnaean-style, rank-based codes of taxonomic nomenclature provide stability to the relation between taxon names and their referents through the device of nomenclatural types. The practice of using types to tether names to taxa is uncontroversial and well-understood.
openaire   +4 more sources

Assessment of Soil Microbial Community Structure by Use of Taxon-Specific Quantitative PCR Assays

open access: yesApplied and Environmental Microbiology, 2005
Here we describe a quantitative PCR-based approach to estimating the relative abundances of major taxonomic groups of bacteria and fungi in soil. Primers were thoroughly tested for specificity, and the method was applied to three distinct soils.
N. Fierer   +3 more
semanticscholar   +1 more source

Crosstalk between gut microbiota and tumor: tumors could cause gut dysbiosis and metabolic imbalance

open access: yesMolecular Oncology, EarlyView.
In this research, we analyzed the relationship between gut microbiota and tumor. We discovered that both subcutaneous and metastatic tumors would alter the composition and metabolic function of gut microbiota. Meanwhile, fecal microbiota transplantation also indicated the anti‐tumor role of the gut microbiota, revealing the crosstalk between tumor and ...
Siyuan Zhang   +8 more
wiley   +1 more source

Comparative Analysis of Core Microbiome Assignments: Implications for Ecological Synthesis

open access: yesmSystems, 2023
The concept of a core microbiome has been broadly used to refer to the consistent presence of a set of taxa across multiple samples within a given habitat.
Gordon F. Custer   +4 more
doaj   +1 more source

Estimating taxon‐specific population dynamics in diverse microbial communities

open access: yes, 2018
Understanding how population-level dynamics contribute to ecosystem-level processes is a primary focus of ecological research and has led to important breakthroughs in the ecology of macroscopic organisms.
B. Koch   +11 more
semanticscholar   +1 more source

Plastid phylogenomics with broad taxon sampling further elucidates the distinct evolutionary origins and timing of secondary green plastids

open access: yesScientific Reports, 2018
Secondary plastids derived from green algae occur in chlorarachniophytes, photosynthetic euglenophytes, and the dinoflagellate genus Lepidodinium. Recent advances in understanding the origin of these plastids have been made, but analyses suffer from ...
C. Jackson   +3 more
semanticscholar   +1 more source

Mesenchymal Stem Cells‐Derived Extracellular Vesicles Mimetics as Osteoinductive Mediators for Bone Healing

open access: yesAdvanced Functional Materials, EarlyView.
Mesenchymal stem cell‐derived nanoghosts (MSC‐NGs) mimic naturally secreted extracellular vesicles (MSC‐EVs) in structure and physicochemical properties but can be synthesized at more translatable yields. As osteogenic agents, MSC‐NGs demonstrate superior outcomes compared to MSC‐EVs.
Antoine Karoichan   +4 more
wiley   +1 more source

Home - About - Disclaimer - Privacy