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The pV diagram, which is a graph of pressure versus volume of the gas under study, is helpful in describing certain aspects of the substance. When the substance behaves like an ideal gas, the ideal gas equation describes the relationship between its pressure and volume. On a pV diagram, it is common to plot an isotherm, which is a curve showing p as a function of V with the number of molecules and the temperature fixed. Then, for an ideal gas, the product of the pressure of the gas and its...
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An ogive graph is sometimes called a cumulative frequency polygon. It is one type of frequency polygon that shows cumulative frequency. In other words, the cumulative percentages are added to the graph from left to right. An ogive graph plots cumulative frequency on the vertical y-axis and class boundaries along the horizontal x-axis. It’s very similar to a histogram; only instead of rectangles, an ogive displays a single point where the top right of the rectangle would be. Creating this...
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Velocity and position can be calculated from the known function of acceleration as a function of time. The total area under the acceleration-time graph and the velocity-time graph gives the change in velocity and position, respectively. In the case of an airplane, its acceleration is tracked using the inertial navigation system. The pilot provides the input of the airplane's initial position and velocity before takeoff. The inertial navigation system then uses the acceleration data to...
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Energy Diagrams - I01:14

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The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
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Energy Diagrams - II01:10

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Related Experiment Video

Updated: Apr 24, 2026

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jvenn: an interactive Venn diagram viewer.

Philippe Bardou, Jérôme Mariette1, Frédéric Escudié

  • 1Plate-forme bio-informatique Genotoul/MIA-T, INRA, Borde Rouge, 31326 Castanet-Tolosan, France. Jerome.Mariette@toulouse.inra.fr.

BMC Bioinformatics
|September 2, 2014
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Summary

jvenn is a JavaScript library that generates Venn diagrams for comparing up to six gene lists, improving readability for complex biological data analysis. This tool enhances visualization for multiple experimental conditions and methods.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Data Visualization

Background:

  • Venn diagrams are standard for comparing biological lists, such as gene lists from differential analyses.
  • Traditional Venn diagrams become unreadable with more than four lists.
  • Readability issues hinder comparisons across multiple experimental conditions or methods.

Purpose of the Study:

  • Introduce jvenn, a JavaScript library for creating dynamic Venn diagrams.
  • Enhance the visualization and analysis of biological list comparisons.
  • Improve the readability of Venn diagrams for an increased number of input lists.

Main Methods:

  • jvenn processes input lists to generate Venn diagrams.
  • Supports up to six input lists.
  • Offers classical and Edwards-Venn layouts with customizable user interactions.
  • Designed for easy embedding into web pages for dynamic visualizations.

Main Results:

  • jvenn successfully generates Venn diagrams for up to six lists.
  • The library provides interactive and customizable Venn diagram displays.
  • Dynamic Venn diagrams can be integrated into web environments.

Conclusions:

  • jvenn is an open-source tool for web-based biological data analysis.
  • Facilitates the comparison of multiple gene lists through enhanced Venn diagrams.
  • Freely available with documentation and examples for scientific use.