Results 11 to 20 of about 1,226,857 (290)

Improved representation of sequence Bloom trees [PDF]

open access: yesBioinformatics, 2018
AbstractAlgorithmic solutions to index and search biological databases are a fundamental part of bioinformatics, providing underlying components to many end-user tools. Inexpensive next generation sequencing has filled publicly available databases such as the Sequence Read Archive beyond the capacity of traditional indexing methods.
Harris, Robert S., Medvedev, Paul
openaire   +3 more sources

An extremal problem for a graphic sequence to have a realization containing every 2-tree with prescribed size [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2016
A graph $G$ is a $2$-tree if $G=K_3$, or $G$ has a vertex $v$ of degree 2, whose neighbors are adjacent, and $G-v$ is a 2-tree. Clearly, if $G$ is a 2-tree on $n$ vertices, then $|E(G)|=2n-3$.
De-Yan Zeng, Jian-Hua Yin
doaj   +1 more source

Branch-Weight Unique Trees

open access: yesDiscussiones Mathematicae Graph Theory, 2022
A branch at a vertex x in a tree is a maximal subtree containing x as an endvertex. The branch-weight of x is the maximum number of edges in any branch at x.
Shang Jen-Ling
doaj   +1 more source

The difficulty of aligning intrinsically disordered protein sequences as assessed by conservation and phylogeny.

open access: yesPLoS ONE, 2023
Intrinsically disordered proteins (IDPs) are proteins that lack a stable 3D structure but maintain a biological function. It has been frequently suggested that IDPs are difficult to align because they tend to have fewer conserved residues compared to ...
Andrew C Riley   +2 more
doaj   +1 more source

Limits of Random Trees [PDF]

open access: yes, 2014
Local convergence of bounded degree graphs was introduced by Benjamini and Schramm. This result was extended further by Lyons to bounded average degree graphs.
Deák, Attila
core   +4 more sources

Admissibility of kneading sequences and structure of Hubbard trees for quadratic polynomials [PDF]

open access: yes, 2008
Hubbard trees are invariant trees connecting the points of the critical orbits of postcritically finite polynomials. Douady and Hubbard \cite{Orsay} introduced these trees and showed that they encode the essential information of Julia sets in a ...
Bruin, Henk, Schleicher, Dierk
core   +2 more sources

Vessel tree tracking in angiographic sequences [PDF]

open access: yesJournal of Medical Imaging, 2017
We present a method to track vessels in angiography [contrast filled vessels in two-dimensional (2-D) x-ray fluoroscopy]. Finding correspondence of a vessel tree from consecutive angiogram frames provides significant value in computer-aided clinical applications such as fast vessel tree segmentation, three-dimensional (3-D) vessel topology ...
Dong, Zhang   +4 more
openaire   +2 more sources

Full sequence analysis and characterization of the South Korean Norovirus GII-4 variant CUK-3

open access: yesVirology Journal, 2011
Background Many of researchers have focused on the emerging pathogen, Norovirus, since its first identification as the causing agent of nonbacterial acute gastroenteritis in humans.
Ryu Sangryeol   +5 more
doaj   +1 more source

Assessment of sequence homology and immunologic cross-reactivity between tree shrew (Tupaia belangeri) and human IL-21. [PDF]

open access: yesPLoS ONE, 2017
Many studies have indicated that the expression of interleukin-21 (IL-21) is associated with the pathogenesis of certain liver diseases. However, in alternative animal models of liver diseases, it remains unknown whether the tree shrew could be utilized ...
Rong Ding   +7 more
doaj   +1 more source

Visualization of Barrier Tree Sequences

open access: yesIEEE Transactions on Visualization and Computer Graphics, 2006
Dynamical models that explain the formation of spatial structures of RNA molecules have reached a complexity that requires novel visualization methods that help to analyze the validity of these models. Here, we focus on the visualization of so-called folding landscapes of a growing RNA molecule. Folding landscapes describe the energy of a molecule as a
Heine, Christian   +4 more
openaire   +4 more sources

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