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Related Concept Videos

Physical Pendulum01:06

Physical Pendulum

2.7K
When a rigid body is hanging freely from a fixed pivot point and is displaced, it oscillates similar to a simple pendulum and is known as a physical pendulum. The period and angular frequency of a physical pendulum are obtained by using the small-angle approximation and drawing parallels with a spring-mass system. The small-angle approximation (sinθ=θ) is valid up to about 14°.
When dealing with complicated systems, the mass moment of inertia is an important parameter, as it...
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The Swing Equation01:21

The Swing Equation

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The Swing Equation is a fundamental tool in power system dynamics, especially for analyzing the behavior of generating units like three-phase synchronous generators. This equation emerges from applying Newton's second law to the rotor of a generator, encompassing factors such as inertia, angular acceleration, and the interplay between mechanical and electrical torques.
In a steady-state operation, the mechanical torque (Τm) supplied to the generator is balanced by the electrical torque (Τe)...
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Simple Pendulum01:10

Simple Pendulum

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A simple pendulum consists of a small diameter ball suspended from a string, which has negligible mass but is strong enough to not stretch. In our daily life, pendulums have many uses, such as in clocks, on a swing set, and on a sinker on a fishing line. 
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum is...
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Torsional Pendulum01:09

Torsional Pendulum

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A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
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Glutamine Flux Imaging Using Genetically Encoded Sensors10:23

Glutamine Flux Imaging Using Genetically Encoded Sensors

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This article will demonstrate how to monitor glutamine dynamics in live cells using FRET. Genetically encoded sensors allow real-time monitoring of biological molecules at a subcellular resolution. Experimental design, technical details of the experimental settings, and considerations for post-experimental analyses will be discussed for genetically encoded glutamine...
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Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing06:42

Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing

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Brightness mode ultrasound can be used to provide visual biofeedback of the muscles of the lateral abdominal wall during a golf swing. Post-swing visual and verbal instruction can increase the muscle activation and timing of the external and internal...
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Related Experiment Video

Updated: Jan 20, 2026

Physical Pendulum
01:06

Physical Pendulum

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Glutamine Supplementation: The Pendulum Keeps on Swinging.

Subhash Todi1

  • 1Department of Intensive Care and Internal Medicine, AMRI Hospital, Kolkata, West Bengal, India.

Indian Journal of Critical Care Medicine : Peer-Reviewed, Official Publication of Indian Society of Critical Care Medicine
|September 6, 2019
PubMed
Summary

Glutamine supplementation in critical care remains controversial. While some studies suggest benefits, others show no improvement or potential harm, necessitating further research.

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Last Updated: Jan 20, 2026

Physical Pendulum
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Glutamine Flux Imaging Using Genetically Encoded Sensors
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Glutamine Flux Imaging Using Genetically Encoded Sensors

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Area of Science:

  • Critical care medicine
  • Nutritional support
  • Clinical nutrition

Background:

  • Glutamine is a conditionally essential amino acid crucial for cellular function.
  • Its role in critically ill patients has been debated for decades.
  • Previous research yielded conflicting results regarding its efficacy.

Purpose of the Study:

  • To review the current evidence on glutamine supplementation in critical illness.
  • To discuss the ongoing debate and future directions in this field.

Main Methods:

  • Review of existing literature and clinical trials.
  • Analysis of studies investigating glutamine's impact on outcomes in critically ill patients.

Main Results:

  • Evidence remains inconclusive regarding the benefits of glutamine supplementation.
  • Some studies indicate potential harm or lack of efficacy in specific patient populations.
  • Heterogeneity in study design and patient populations complicates interpretation.

Conclusions:

  • The use of glutamine supplementation in critical care is not definitively established.
  • Further high-quality research is required to clarify its role and optimal use.
  • Clinical decisions should be individualized based on the evolving evidence.