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Related Concept Videos

Biofilms01:29

Biofilms

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Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
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Inhaled Medications01:23

Inhaled Medications

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Inhaled medications are crucial for managing chronic obstructive pulmonary disease (COPD) and asthma. They are essential for effective treatment and control, ensuring optimal respiratory health and well-being. Inhaled medication delivers drugs directly to the lungs, providing a rapid onset of action and reducing systemic side effects compared to oral or injectable medications. Three primary types of inhalation devices are used to administer these medications: nebulizers, metered-dose inhalers...
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Thermal expansion and Thermal stress: Problem Solving01:27

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San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
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Thermal Strain01:19

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Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
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Thermal Expansion01:22

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The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a given system as its temperature changes. The most visible example is the expansion of hot air. When air is heated, it expands and becomes less dense than the surrounding air, which then exerts an upward force on the hot air to, for example, make steam and smoke rise, and hot air balloons float. The same behavior happens in all liquids and gases,...
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Thermal Stress01:09

Thermal Stress

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If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
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Harvesting and Disaggregation: An Overlooked Step in Biofilm Methods Research
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Medically important biofilms and non-thermal plasma.

Jaroslav Julák1, Vladimír Scholtz2, Eva Vaňková3

  • 1Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University and General University Hospital, Studničkova 7, 128 00, Prague 2, Czech Republic. jaroslav.julak@lf1.cuni.cz.

World Journal of Microbiology & Biotechnology
|November 21, 2018
PubMed
Summary

Non-thermal plasma exhibits potent microbiocidal properties, effectively combating and preventing microbial biofilms in food and medical applications. This review explores plasma

Keywords:
Biofilm inactivationBiofilm preventionDental and oralNon-thermal plasma productionWound healing

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Area of Science:

  • Plasma Physics
  • Microbiology
  • Biotechnology

Background:

  • Non-thermal plasma (NTP), an ionized gas at ambient temperature, shows promise for its antimicrobial capabilities.
  • Recent research highlights NTP's effectiveness against microbial biofilms, in addition to planktonic microorganisms.
  • Applications are emerging in the food industry and medicine.

Purpose of the Study:

  • To review the interdisciplinary research on non-thermal plasma interactions with microbial biofilms.
  • To summarize studies on general plasma action, biofilm combating, and prevention.
  • To provide an overview of plasma instrumentation and oral/dental applications.

Main Methods:

  • Review of existing literature on non-thermal plasma and microbial biofilms.
  • Categorization of studies based on plasma-biofilm interactions.
  • Inclusion of information on plasma generation and application.

Main Results:

  • Non-thermal plasma demonstrates significant efficacy in both eradicating and preventing microbial biofilm formation.
  • Diverse plasma-biofilm interactions are detailed, covering bacterial action and specific applications.
  • Plasma instrumentation and its role in these applications are briefly discussed.

Conclusions:

  • Non-thermal plasma is a versatile tool for addressing microbial biofilm challenges.
  • Its applications extend to both combating established biofilms and preventing their development.
  • Further research and development in plasma technology hold potential for significant advancements in hygiene and healthcare.