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Related Concept Videos

Methods of Sterilization I: Physical Methods01:29

Methods of Sterilization I: Physical Methods

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...
Methods of Sterilization II: Chemical Methods01:30

Methods of Sterilization II: Chemical Methods

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,...
Cleaning, Sterilization, and Disinfection01:30

Cleaning, Sterilization, and Disinfection

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...
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
Methods for Controlling Microbial Growth01:29

Methods for Controlling Microbial Growth

Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
Key Techniques in Microbiology01:19

Key Techniques in Microbiology

Aseptic techniques prevent contamination, ensure experimental accuracy, and protect researchers and microbial cultures. These techniques are essential in clinical, industrial, and research settings where sterility is required.Maintaining Sterility in Laboratory PracticesScientists maintain sterility by sterilizing tools with heat or chemicals, disinfecting work surfaces, and handling cultures in controlled environments. Working near an open flame or within a laminar flow hood reduces the risk...

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A Flame-Free Method for Sterilizing C. elegans Picks, Spatulas, and Scalpels
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[Sterilization and eugenics].

Shaul M Shasha1

  • 1Western Galilee Hospital, Nahariya. shasha@actcom.co.il

Harefuah
|December 15, 2011
PubMed
Summary
This summary is machine-generated.

Eugenics, the science of improving the human race through selective breeding, led to forced sterilizations and discriminatory laws in Western countries and Nazi Germany. These unethical practices harmed hundreds of thousands deemed "unfit."

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Area of Science:

  • Social Sciences
  • History
  • Bioethics

Context:

  • Eugenics, defined as improving the human race via selective breeding, emerged in the late 19th century.
  • Coined by Francis Galton, it encompassed "positive" (encouraging reproduction of the "fit") and "negative" (discouraging reproduction of the "unfit") eugenics.
  • Many Western nations implemented eugenics programs, including marriage laws and forced sterilizations.

Purpose:

  • To analyze the historical implementation and ethical implications of eugenics programs worldwide.
  • To document the methods and scope of eugenics practices, including forced sterilizations and discriminatory legislation.
  • To highlight the severe human rights violations associated with eugenics, particularly under the Nazi regime.

Summary:

  • Eugenics programs were adopted by countries like Britain, Canada, Norway, Australia, Switzerland, and the USA, resulting in over 126,000 forced sterilizations.
  • The Nazi regime in Germany enacted the most extensive eugenics plan, forcibly sterilizing hundreds of thousands using methods like surgical sterilization, X-ray irradiation, and chemical injections.
  • Eugenics also influenced policies such as the US Immigration Restriction Act of 1924, reflecting discriminatory beliefs about human breeding.

Impact:

  • Eugenics practices led to widespread human rights abuses, including forced sterilizations and discriminatory laws, causing profound suffering.
  • The historical application of eugenics underscores the dangers of pseudoscientific ideologies in shaping public policy and perpetuating discrimination.
  • Understanding the history of eugenics is crucial for contemporary bioethics and safeguarding against the resurgence of such harmful practices.