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Related Concept Videos

Signal Flow Graphs01:18

Signal Flow Graphs

Signal-flow graphs offer a streamlined and intuitive approach to representing control systems, providing an alternative to traditional block diagrams. These graphs use branches to symbolize systems and nodes to represent signals, effectively illustrating the relationships and interactions within the system.
In a signal-flow graph, branches denote the system's transfer functions, while nodes represent the signals. The direction of signal flow is indicated by arrows, with the corresponding...
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Relation between Mathematical Equations and Block Diagrams

In a spring-mass-damper system, the second-order differential equation describes the dynamic behavior of the system. When transformed into the Laplace domain under zero initial conditions, this equation can be effectively analyzed and manipulated. The transformation into the Laplace domain converts differential equations into algebraic equations, simplifying the process of isolating the output.
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pV-Diagrams

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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Cell Diagrams and IUPAC Conventions

Electrochemical cell notation is a standardized symbolic representation that communicates the structure and reaction pathway of galvanic and electrolytic cells. This notation plays a critical role in describing redox reactions and electrochemical cell configurations without the need for detailed diagrams.In electrochemical cell notation, a single vertical line “|” denotes a phase boundary, such as between a solid electrode and an aqueous solution. A double vertical line “||” represents a salt...
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A Web Tool for Generating High Quality Machine-readable Biological Pathways
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The Systems Biology Graphical Notation.

Nicolas Le Novère1, Michael Hucka, Huaiyu Mi

  • 1EMBL European Bioinformatics Institute, Hinxton, UK. lenov@ebi.ac.uk

Nature Biotechnology
|August 12, 2009
PubMed
Summary
This summary is machine-generated.

Biology needs standard visual languages. The Systems Biology Graphical Notation (SBGN) provides three complementary diagram types for clear representation of complex biological networks.

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Area of Science:

  • Systems Biology
  • Bioinformatics
  • Computational Biology

Background:

  • Standardized visual languages like circuit diagrams accelerate scientific communication by reducing ambiguity and enabling tool support.
  • Biology, despite its graphical nature, lacks standardized graphical notations for representing complex information.

Observation:

  • The rapid growth of biological data necessitates a standardized approach to visual representation.
  • Existing methods for depicting biological interactions are often inconsistent and ambiguous.

Findings:

  • The Systems Biology Graphical Notation (SBGN) is introduced as a standardized visual language.
  • SBGN comprises three complementary languages: process diagrams, entity relationship diagrams, and activity flow diagrams.
  • These notations enable unambiguous representation of biochemical interaction networks.

Implications:

  • SBGN facilitates efficient and accurate representation, visualization, storage, exchange, and reuse of biological knowledge.
  • This standardization can advance research in areas such as gene regulation, metabolism, and cellular signaling.
  • SBGN aims to foster a common visual language for the diverse fields within biology.