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Integration of Synaptic Events01:28

Integration of Synaptic Events

Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...
Virtual Work01:20

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The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
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The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible only with...
Two-Way ANOVA01:17

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The two-way ANOVA is an extension of the one-way ANOVA. It is a statistical test performed on three or more samples categorized by two factors - a row factor and a column factor. Ronald Fischer mentioned it in 1925 in his book 'Statistical Methods for Researchers.'
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The nursing history captures and records the patient's health status, so that a care plan evolves to meet the patient's individual needs. The nursing health history is a part of the initial assessment. A comprehensive history covers all health dimensions and plays a significant role in the assessment process. A comprehensive history includes the patient's biographical information, reasons for seeking health care, expectations, present and past health history, medications, and family,...
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Updated: May 27, 2026

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

ViennaRNA Package 2.0.

Ronny Lorenz1, Stephan H Bernhart, Christian Höner Zu Siederdissen

  • 1Institute for Theoretical Chemistry and Structural Biology, University of Vienna, Währingerstraße 17/3, A-1090 Vienna, Austria. ronny@tbi.univie.ac.at.

Algorithms for Molecular Biology : AMB
|November 26, 2011
PubMed
Summary
This summary is machine-generated.

The ViennaRNA Package 2.0 offers updated RNA secondary structure analysis tools. This release features enhanced RNA-RNA interaction assessments and improved computational efficiency for broader research applications.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Molecular Biology

Background:

  • Nucleic acid secondary structure is crucial for folding, conservation, and experimental interpretation.
  • Thermodynamic parameters and dynamic programming algorithms enable accurate prediction of RNA structures and properties.

Purpose of the Study:

  • To update the widely-used ViennaRNA Package for analyzing RNA secondary structures.
  • To incorporate recent advancements in energy models, computational power, and algorithms.

Main Methods:

  • Technical overhaul of the RNAlib and user programs.
  • Implementation of new algorithms for RNA-RNA interactions and structure ensembles.
  • Support for multi-core CPUs and updated energy parameters (Turner 2004).

Main Results:

  • ViennaRNA Package 2.0 includes tools for RNA-RNA interactions and restricted structure ensembles.
  • New outputs include centroid and maximum expected accuracy structures, and z-scores.
  • Enhanced computational efficiency and compatibility with previous versions are maintained.

Conclusions:

  • ViennaRNA Package 2.0 is available with support for concurrent computations via OpenMP.
  • The updated package facilitates advanced RNA secondary structure analysis.