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Equivalent Circuits for Practical Transformers01:28

Equivalent Circuits for Practical Transformers

The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
In a practical transformer, each winding exhibits resistance and leakage reactance. The...
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Here we show key steps in the process of creating high-quality, resin-embedded arthropods for educational instruction and...
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The Dyspepsia Educational Tool As a Novel Aid in Dyspepsia Management06:40

The Dyspepsia Educational Tool As a Novel Aid in Dyspepsia Management

This protocol describes the development process of a digital dyspepsia educational tool. Assessment of unmet needs and literature, content development, and building of the tool are presented. The methodology can be used as a guide for future development of digital educational tools.
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Bacterial Transformation01:33

Bacterial Transformation

In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
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Bacterial Transformation04:33

Bacterial Transformation

Background
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Fixed Action Patterns01:06

Fixed Action Patterns

A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
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