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Related Concept Videos

Masking and Demasking Agents01:19

Masking and Demasking Agents

3.1K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
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Deindividuation00:57

Deindividuation

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Deindividuation is a form of social influence on an individual’s behavior such that the individual engages in unusual or non-normal behavior while in a group setting. Why? Because in these group settings, the individual no longer sees themselves as an individual anymore, disinhibiting their behavior and personal restraint.
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PPE Use in Healthcare Settings II: Doffing01:10

PPE Use in Healthcare Settings II: Doffing

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The sequence of removing or doffing PPE starts with the gloves, as they are the most contaminated. Next is removal of the face shield or goggles, as they would interfere with removing other PPE. Then remove the gown, followed by the mask or respirator. Perform hand hygiene between steps if hands become contaminated and immediately after removing all PPE. Generally, the outside front and sleeves of the isolation gown, the goggles or the mask, the respirator, and the face shield are contaminated.
1.3K
Nonconscious Mimicry01:13

Nonconscious Mimicry

4.8K
Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
4.8K
Blinding01:11

Blinding

3.6K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
3.6K
Administering Oxygen by Mask01:30

Administering Oxygen by Mask

1.2K
Administering Oxygen by Mask
Administering oxygen by mask is a common nursing intervention that provides supplemental oxygen to patients with respiratory distress or chronic lung conditions. This procedure involves delivering oxygen at a specified rate through a face mask connected to an oxygen source.
Equipment
The equipment necessary for this procedure includes:
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Related Experiment Video

Updated: Nov 12, 2025

Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face
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Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face

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Unmasking the unmasked.

Nis Schmidt1

  • 1Faculty of Medicine University of British Columbia, Vancouver, BC, Canada; Historian and Member of North Pacific Surgical Association, North Pacific Surgical Association, Salem, OR, USA.

American Journal of Surgery
|March 22, 2021
PubMed
Summary

Facial masks are essential for preventing respiratory diseases like COVID-19. Their use, alongside other measures, offers the best protection against airborne viruses until an immunologic solution is available.

Keywords:
Covid-2MaskingPandemicPersonal protective equipmentUnmasking

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Related Experiment Videos

Last Updated: Nov 12, 2025

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Area of Science:

  • Public Health
  • Epidemiology
  • Infectious Disease Prevention

Background:

  • Facial masks have historically served various purposes, with health-related applications evolving significantly after the germ theory of disease.
  • The evolution of mask usage highlights a long-standing recognition of their protective capabilities.

Observation:

  • Facial masks are currently recognized as a critical tool for preventing the transmission of respiratory diseases.
  • The SARS-CoV-2 pandemic underscores the importance of masks as personal protective equipment against airborne pathogens.

Findings:

  • Despite scientific understanding, there is societal opposition to mask usage.
  • Masks represent the most effective single preventive measure against airborne viral spread in the absence of widespread immunity.

Implications:

  • Widespread mask adoption, combined with social distancing and hygiene, can significantly enhance public safety.
  • Implementing these measures can mitigate the severity and spread of viral outbreaks, leading to better societal outcomes.