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Related Concept Videos

Neural Circuits01:25

Neural Circuits

Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
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A student is tasked to work on an intriguing experiment involving an RL (Resistor-Inductor) circuit to study the muscle response of a frog's leg to electrical stimulation. The RL circuit plays a crucial role in this experiment, providing the means to control and measure the electrical impulses that trigger muscle contraction.
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The Bode plot is an essential tool in control system analysis, mapping the frequency response of a system through a magnitude plot and a phase plot, both against a logarithmic frequency axis. To construct a Bode plot, consider the transfer function H(ω):
Second-order Op Amp Circuits01:19

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Oscillations In An LC Circuit01:30

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An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
Series RLC Circuit without Source01:21

Series RLC Circuit without Source

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Continuous Measurement of Biological Noise in Escherichia Coli Using Time-lapse Microscopy
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Continuous Measurement of Biological Noise in Escherichia Coli Using Time-lapse Microscopy

Published on: April 27, 2021

Noise in biological circuits.

Michael L Simpson1, Chris D Cox, Michael S Allen

  • 1Oak Ridge National Laboratory, Oak Ridge, TN, USA. SimpsonML1@ornl.gov

Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
|January 6, 2010
PubMed
Summary
This summary is machine-generated.

Noise biology studies cellular stochastic fluctuations, crucial for nanomedicine. Understanding this noise reveals how cells use randomness for function and guides gene circuit analysis.

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Area of Science:

  • Molecular Biology
  • Systems Biology
  • Nanomedicine

Background:

  • Cellular behavior is governed by stochastic fluctuations in molecular interactions, particularly in small biological systems.
  • These fluctuations, or noise, are critical in nanomedicine for information transfer between synthetic and biological components.
  • Noise biology investigates the origins, processing, and biological impacts of these inherent cellular variations.

Purpose of the Study:

  • To review computational, analytical, and experimental approaches to noise biology.
  • To explore how cells have evolved to manage or utilize stochasticity.
  • To discuss the use of noise properties for understanding gene circuit structure and function.

Main Methods:

  • Computational and analytical approaches for gene circuit noise analysis and simulation.
  • Experimental techniques including flow cytometry and time-lapse fluorescent microscopy.
  • Review of existing research on noise biology fundamentals and applications.

Main Results:

  • Genetic systems exhibit uneven stochasticity distribution, balancing low noise benefits with population size.
  • Some cellular systems have evolved to use noise as a driving force for biological functions.
  • Measured noise properties can elucidate the structure and function of underlying gene circuits.

Conclusions:

  • Noise biology is essential for understanding cellular behavior and nanomedicine.
  • Evolution has shaped genetic architectures to manage or exploit cellular noise.
  • Future research challenges lie in further exploring the frontiers of noise biology and its applications.