Results 71 to 80 of about 1,260,485 (295)

The Comparison of Tree-Sibling Time Consistent Phylogenetic Networks Is Graph Isomorphism-Complete

open access: yesThe Scientific World Journal, 2014
Several polynomial time computable metrics on the class of semibinary tree-sibling time consistent phylogenetic networks are available in the literature; in particular, the problem of deciding if two networks of this kind are isomorphic is in P.
Gabriel Cardona   +3 more
doaj   +1 more source

Parallel Algorithms for the Spectral Transform Method [PDF]

open access: yesSIAM Journal on Scientific Computing, 1997
Summary: The spectral transform method is a standard numerical technique for solving partial differential equations on a sphere and is widely used in atmospheric circulation models. Recent research has identified several promising algorithms for implementing this method on massively parallel computers; however, no detailed comparison of the different ...
Ian T. Foster, Patrick H. Worley
openaire   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Results of the preparatory study “PREMIER Analysis of Campaign Data”

open access: yesAnnals of Geophysics, 2014
The relevance of the UTLS (Upper Troposphere and Lower Stratosphere) region and the impact of limb emissionmeasurements at millimetre and sub-millimetre wavelengths for investigation of chemical, dynamical andradiative processes occurring at these ...
Elisa Castelli   +9 more
doaj   +1 more source

Algorithmic Methods for Lie Pseudogroups

open access: yes, 1993
We present an algorithm to complete any given system of differential equations to an involutive system as needed e.g. for concrete applications of Lie pseudogroups. It is based on jet bundle formalism and formal theory. An implementation in the computer algebra system AXIOM is described.
Seiler, Werner M.   +2 more
openaire   +4 more sources

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

Two algorithms for the sieve method

open access: yesJournal of Algorithms, 1991
Abstract We present two algorithms that implement the sieve method. The first one sieves numbers. It finds the numbers of objects that have exactly each number of properties. The second sieves sets. It finds the sets of objects that have exactly each number of properties.
openaire   +2 more sources

Prospecting the protein design landscape

open access: yesFEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona   +4 more
wiley   +1 more source

Flash sourcing, or rapid detection and characterization of earthquake effects through website traffic analysis

open access: yesAnnals of Geophysics, 2011
<p>This study presents the latest developments of an approach called ‘flash sourcing’, which provides information on the effects of an earthquake within minutes of its occurrence.
Laurent Frobert   +5 more
doaj   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

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