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Related Concept Videos

Hand hygiene01:23

Hand hygiene

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Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
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Methods of Sterilization II: Chemical Methods01:30

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In healthcare, the chemical method of sterilization uses chemical sterilants to treat surgical instruments and medical supplies to help prevent the transmission of infectious pathogens to patients. Due to heat sensitivity, most medical supplies and equipment should not be exposed to high temperatures. These parts include rubber, plastic, glass, and other similar elements.
Using chemical sterilization rather than heat to clean out equipment is recommended. It eradicates and removes all bacteria,...
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Methods of Sterilization I: Physical Methods01:29

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As used in a healthcare facility, sterilization destroys all microorganisms through physical or chemical methods. The physical method includes steam, dry heat, boiling water, and radiation.
Steam sterilization uses non-toxic, low-cost moist heat in the form of saturated steam under pressure, which is fast, microbicidal, and sporicidal, and quickly warms and penetrates fabrics. Autoclaves, or steam sterilizers, expose each item to direct steam contact for a predetermined time at the necessary...
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Cleaning, Sterilization, and Disinfection01:30

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Cleaning, disinfection, and sterilization are the methods that help to break the infection chain and prevent disease.
Cleaning
The cleaning process usually involves using water with detergents or enzymatic cleaner and removing foreign material from objects and surfaces, including organic material such as body fluids or inorganic material like soil. Cleaning is performed before high-level disinfection and sterilization because foreign materials on the cover of the devices interfere with process...
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Chemical Agents for Microbial Control01:27

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Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
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Handwashing II: Pre-procedure and Initial Procedure Steps01:19

Handwashing II: Pre-procedure and Initial Procedure Steps

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The pre-procedure steps of handwashing include removing jewelry and rolling up sleeves. However, many organizations allow staff to wear wedding rings.
The hand washing procedure itself includes the following steps. First, cover cuts, if any, on hands with a waterproof dressing. Cuts and abrasions can become contaminated with bacteria hindering the ability to clean the area thoroughly. In addition, repeated hand washing can worsen an injury.  The nails must be short and clean, without nail...
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Biofilm Removal Using Carbon Dioxide Aerosols without Nitrogen Purge
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An activated fluid stream--New techniques for cold water cleaning.

Peter R Birkin1, Douglas G Offin1, Timothy G Leighton2

  • 1Chemistry, Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK.

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Novel techniques enhance surface cleaning by monitoring mass transfer and utilizing bubble activation. Electrochemical methods with bubble swarms effectively expand cleaning zones for improved solid/liquid interface purification.

Keywords:
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Area of Science:

  • Surface science
  • Acoustic cavitation
  • Electrochemical engineering

Background:

  • Effective surface cleaning is crucial across various industries.
  • Understanding the fundamental phenomena governing cleaning processes is essential.
  • Existing methods often lack precise monitoring or targeted action.

Purpose of the Study:

  • To present novel techniques for enhancing and monitoring surface cleaning.
  • To investigate ultrasonic cleaning of micropores and the effect of pore size.
  • To develop and evaluate a new bubble-activated cleaning system.

Main Methods:

  • Utilized electrochemical, acoustic, and imaging techniques for characterization.
  • Employed surface-embedded sensors to monitor mass transfer.
  • Designed and tested a cleaning system with acoustically activated bubbles and electrochemically generated bubble swarms.

Main Results:

  • Mass transfer monitoring proved useful for ultrasonic cleaning of micropores.
  • Micropore size significantly impacts cleaning efficacy.
  • The novel bubble-activated system demonstrated extended cleaning zones through bubble swarms.

Conclusions:

  • Novel monitoring and activation techniques offer enhanced surface cleaning capabilities.
  • Electrochemical generation of bubble swarms is a promising method for extending cleaning reach.
  • This research provides insights into optimizing cleaning processes for solid/liquid interfaces.