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Resistivity01:22

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When a voltage is applied to a conductor, an electrical field is generated, and charges in the conductor feel the force due to the electrical field. The current density that results depends on the electrical field and the properties of the material. In some materials, including metals at a given temperature, the current density is approximately proportional to the electrical field. In these cases, the current density can be modeled as:
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Resistance01:19

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When a current moves through any conductor, the conductor causes some level of difficulty for the current to flow. The measure of that difficulty is known as the resistance of the material and is represented by R. Every material has its own resistance. In the case of conductors, heat is emitted whenever a current passes through them. Resistance depends on the resistivity of the material. Resistivity is a characteristic of the material used to fabricate electrical components, whereas the...
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Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
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A conductor's DC resistance at a given temperature is influenced by its resistivity, length, and cross-sectional area. Resistivity is an inherent property of the conductor material, with annealed copper serving as the international standard for measurement. For instance, the resistivity of hard-drawn aluminum at 20 degrees Celsius is 61% of the standard conductivity of annealed copper.
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Equivalent Resistance01:16

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In circuit analysis, situations often arise where resistors are neither in series nor parallel configurations. To tackle such scenarios, three-terminal equivalent networks like the wye (Y) (Figure 1 (a)) or tee (T) and delta (Δ) (Figure 1 (b)) or pi (π) networks come into play. These networks offer versatile solutions and are frequently encountered in various applications, including three-phase electrical systems, electrical filters, and matching networks.
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Death from pan-resistant superbug.

Larry Nichols1

  • 1Mercer University School of Medicine, Department of Pathology. Macon, Georgia, USA.

Autopsy & Case Reports
|August 24, 2019
PubMed
Summary
This summary is machine-generated.

Pan-resistant Acinetobacter baumannii causes fatal infections in vulnerable patients. This case report details a fatal pneumonia in an immunosuppressed transplant patient, highlighting the need for novel treatment approaches.

Keywords:
AcinetobacterAutopsyDrug resistance, BacterialPneumonia

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Area of Science:

  • Infectious Diseases
  • Microbiology
  • Critical Care Medicine

Background:

  • Acinetobacter baumannii is a significant global health threat, frequently exhibiting multidrug resistance.
  • Pan-resistant strains of Acinetobacter baumannii are increasingly reported, posing a severe challenge in clinical settings.
  • Immunosuppressed individuals, such as transplant recipients, are particularly susceptible to severe Acinetobacter infections.

Observation:

  • This report describes a case of fatal pneumonia caused by pan-resistant Acinetobacter baumannii.
  • The patient was an immunosuppressed transplant recipient, highlighting a vulnerable population.
  • The infection demonstrated resistance to all available antimicrobial agents.

Findings:

  • The case underscores the critical threat posed by pan-resistant Acinetobacter baumannii.
  • Treatment options for such infections are limited, necessitating alternative therapeutic strategies.
  • The clinical presentation and outcome emphasize the aggressive nature of this superbug.

Implications:

  • There is an urgent need for the development of novel therapeutic agents and treatment protocols for pan-resistant Acinetobacter infections.
  • This case highlights the importance of infection control measures in healthcare settings, especially for immunocompromised patients.
  • Further research into alternative therapies, including non-antibiotic approaches, is crucial to combat emerging superbugs.