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Related Concept Videos

Transmission-based Precautions II: Airborne and Protective Environment01:25

Transmission-based Precautions II: Airborne and Protective Environment

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Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
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Zones of Protection01:16

Zones of Protection

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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...
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Protection of Alcohols02:31

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This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
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Self-esteem, a central component of psychological well-being, is actively maintained through various cognitive and behavioral strategies. Individuals employ specific mechanisms to preserve a positive self-concept and mitigate threats to their self-worth, particularly in contexts involving social evaluation or personal feedback. Four primary techniques are commonly used to sustain self-esteem.Manipulating AppraisalsOne prominent strategy involves manipulating appraisals from others. Individuals...
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Radial System Protection01:23

Radial System Protection

424
Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
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Line Protection with Impedance Relays01:27

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Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
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Related Experiment Video

Updated: Jan 20, 2026

Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
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Curcumin encapsulation and protection based on lysozyme nanoparticles.

Jilai Cui1,2,3, Jie Zhou1,2,3, Lu Huang1

  • 1College of Life Science Xinyang Normal University Xinyang China.

Food Science & Nutrition
|August 21, 2019
PubMed
Summary

Lysozyme nanoparticles enhance curcumin

Keywords:
curcuminlysozymenanoparticlesprotectionsolubilization

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Pharmacology

Background:

  • Curcumin exhibits potent antioxidant and anti-inflammatory properties.
  • Poor solubility and stability limit curcumin's bioavailability and therapeutic applications.

Purpose of the Study:

  • To fabricate lysozyme nanoparticles for curcumin encapsulation.
  • To investigate the solubilization and protective effects of lysozyme nanoparticles on curcumin.

Main Methods:

  • Lysozyme nanoparticles synthesized via solvent evaporation.
  • Characterization using dynamic light scattering, atomic force microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy.
  • Evaluation of curcumin solubility, encapsulation efficiency, thermal stability, and antioxidant activity.

Main Results:

  • Spherical lysozyme nanoparticles (127.9 ± 2.12 nm) were successfully fabricated.
  • Curcumin solubility increased to 22 μg/mL.
  • Encapsulated curcumin showed significantly improved thermal stability (67.9% at 25°C, 30.25% at 50°C) and enhanced free radical scavenging activity compared to free curcumin.

Conclusions:

  • Lysozyme nanoparticles effectively improve curcumin solubility and stability.
  • These nanoparticles demonstrate potential for delivering hydrophobic, environment-sensitive compounds.
  • The findings support the application of lysozyme nanoparticles in enhancing the bioavailability of functional ingredients.