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Related Concept Videos

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A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
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Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
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Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
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Dosage Regimens: Partial Pharmacokinetic Parameters01:01

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It is not uncommon for complete drug pharmacokinetic profiles to remain elusive in pharmacokinetics. This necessitates certain educated assumptions by pharmacokineticists to determine appropriate dosage regimens without comprehensive pharmacokinetic data from animal or human studies. One prevalent assumption is setting the bioavailability factor, denoted as F, to 1 or 100%. This assumption caters to the scenario where a drug doesn't achieve full systemic absorption, resulting in the patient...
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Integration of Rational Functions Using Partial Fractions01:29

Integration of Rational Functions Using Partial Fractions

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Rational functions are expressions written as the ratio of two polynomials, and their integrals are evaluated by simplifying the integrand into manageable parts. These functions are classified as proper or improper based on the degrees of the numerator and denominator.A rational function is proper when the degree of the numerator is less than the degree of the denominator. In this case, partial fraction decomposition is used to rewrite the function as a sum of simpler rational terms. The...
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Related Experiment Video

Updated: Feb 14, 2026

Rodent Model of Masseter Volumetric Muscle Loss for Studying Bioengineering Materials
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Masseter Muscle Thickness in Unilateral Partial Edentulism: An Ultrasonographic Study.

S Sathasivasubramanian1, P M Venkatasai2, C V Divyambika1

  • 1Department of Oral Medicine and Radiology, Sri Ramachandra Medical College and Research Institute, (Deemed to be University), Chennai, Tamil Nadu, India.

Journal of Clinical Imaging Science
|February 7, 2018
PubMed
Summary

Unilateral partial edentulism may lead to masseter muscle atrophy on the affected side. Further research with larger sample sizes is needed to confirm these findings and explore prosthetic rehabilitation effects.

Keywords:
Massetermasseter muscle thicknessultrasoundunilateral partial edentulism

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Area of Science:

  • Dentistry
  • Oral anatomy
  • Biomedical engineering

Background:

  • Occlusal equilibrium is crucial for facial muscle function.
  • Unilateral partial edentulism can alter masseter muscle anatomy and function.

Purpose of the Study:

  • To evaluate masseter muscle thickness in individuals with unilateral partial edentulism.
  • To compare muscle thickness between edentulous and dentulous sides.

Main Methods:

  • Ultrasound imaging was used to measure masseter muscle thickness in 27 edentulous patients and 30 controls.
  • Measurements were taken in both relaxed and contracted states.
  • Statistical analysis included t-tests and Pearson's correlation coefficient.

Main Results:

  • A statistically significant difference in masseter muscle thickness was observed between the dentulous and edentulous sides of the edentulous group (P < 0.05).
  • No significant difference was found between the dentulous side of the control group and the edentulous group.
  • Correlation between the duration of edentulism and muscle thickness was not statistically significant.

Conclusions:

  • The study suggests potential masseter muscle atrophy on the edentulous side.
  • A larger sample size is recommended for conclusive findings and to correlate with edentulism duration.
  • Future research should investigate muscle morphology post-prosthetic rehabilitation.