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Related Concept Videos

Pilot and Numeric Relaying01:21

Pilot and Numeric Relaying

Pilot relaying is a type of differential protection used in power systems. It compares electrical quantities at the terminals of equipment via a communication channel instead of direct relay interconnection. This method is essential for transmission lines where the terminals are far apart, typically up to 80 km for lines with 69 to 115 kV ratings. Four types of communication channels are used for pilot relaying:
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
Zones of Protection01:16

Zones of Protection

In power systems, the entire setup is divided into protective zones to isolate faults and protect the rest of the network. These zones include generators, transformers, buses, transmission lines, distribution lines, and motors. Each zone can be visualized as a separate room in a house, with each room protected by its own circuit breaker.
Protective zones are defined by closed dashed lines, containing one or more components. A key characteristic of these zones is the strategic placement of...
The Antenna Complex01:15

The Antenna Complex

Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency can...
Hospitals-II00:59

Hospitals-II

Hospitals provide inpatient and outpatient services. Inpatient services provide care to patients that stay in the hospital for an extended period, ranging from days to months. Examples of inpatient services include intensive care units, hospital wards, or surgeries. Outpatient services provide care to patients who come to a hospital for a diagnostic or treatment but do not stay overnight —for example, diagnostic tests, surgical procedures, or health education.
Nurses that work in hospitals have...
Documentation in Long-Term and Home Healthcare Setting01:29

Documentation in Long-Term and Home Healthcare Setting

Documentation in long-term care facilities and home healthcare settings is crucial for ensuring continuous, coordinated, and comprehensive care for patients. Each setting has its specific documentation processes and tools:
Long-Term Care Facilities

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Related Experiment Video

Updated: Jun 20, 2026

The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide
14:29

The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide

Published on: March 19, 2018

Station ALOHA stands sentinel.

Christopher Pala

    Environmental Science & Technology
    |September 22, 2009
    PubMed
    Summary

    Ocean conditions have been meticulously recorded for 21 years near a remote buoy. This detailed data offers insights into the marine environment

    Area of Science:

    • Oceanography
    • Marine Science
    • Environmental Monitoring

    Background:

    • Long-term oceanographic data is crucial for understanding climate change impacts.
    • Remote sensing buoys provide valuable in-situ measurements.

    Purpose of the Study:

    • To present a detailed 21-year record of ocean conditions near a remote buoy.
    • To analyze trends and changes in the marine environment over two decades.

    Main Methods:

    • Collection of oceanographic samples near a remote buoy.
    • Analysis of environmental parameters over a 21-year period.

    Main Results:

    • An "exquisitely detailed record" of ocean conditions has been compiled.
    • The data spans 21 years, capturing significant environmental changes.

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    12:22

    Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

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    Last Updated: Jun 20, 2026

    The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide
    14:29

    The Hawaii Protocol for Scientific Monitoring of Coffee Berry Borer: a Model for Coffee Agroecosystems Worldwide

    Published on: March 19, 2018

    Visualizing Efficacy of Pesticides Against Disease Vector Mosquitoes in the Field
    10:49

    Visualizing Efficacy of Pesticides Against Disease Vector Mosquitoes in the Field

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    Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
    12:22

    Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

    Published on: February 16, 2019

    Conclusions:

    • The collected data provides a valuable long-term perspective on ocean health.
    • This record is essential for future marine research and conservation efforts.