Related Experiment Video

Updated: Jul 30, 2026

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
10:38

Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters

Published on: September 27, 2012

[Homeostasis of the auto-oscillation period in a model of a cellular circadian clock]

E E Sel'kov, L Ia Lisnichuk, N V Avseenko

    Biofizika
    |May 1, 1989
    PubMed

    More Related Videos

    Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures06:53

    Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures

    Published on: November 11, 2016

    In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells11:56

    In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells

    Published on: September 28, 2017

    Related Concept Videos

    Circadian Rhythms and Gene Regulation02:19

    Circadian Rhythms and Gene Regulation

    The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
    Types of Damping01:20

    Types of Damping

    If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
    Forced Oscillations01:06

    Forced Oscillations

    When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
    Oscillations In An LC Circuit01:31

    Oscillations In An LC Circuit

    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
    RLC Circuit as a Damped Oscillator01:30

    RLC Circuit as a Damped Oscillator

    An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
    Consider a series RLC circuit. Here, the presence of resistance in the circuit leads to energy loss due to joule heating in the resistance. Therefore, the total electromagnetic energy in the circuit is no longer constant and decreases with time. Since the magnitude of charge, current, and potential difference continuously decreases, their oscillations are said to be damped. This is...
    Design Example: Underdamped Parallel RLC Circuit01:17

    Design Example: Underdamped Parallel RLC Circuit

    Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
    Starting with a fixed...