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Related Concept Videos

Two-Compartment Open Model: IV Bolus Administration01:18

Two-Compartment Open Model: IV Bolus Administration

The two-compartment model for intravenous (IV) bolus administration illustrates drug distribution in the body, subdividing it into central and peripheral compartments. This model operates on the concept of two-compartment kinetics. The drug's plasma concentration shows a bi-exponential decline following IV bolus administration, signaling the presence of two disposition processes: distribution and elimination.
The disparity between drug input and the sum of drug transfer rates between...
One-Compartment Open Model for IV Bolus Administration: General Considerations01:19

One-Compartment Open Model for IV Bolus Administration: General Considerations

The one-compartment model is a pharmacokinetic tool that models the body as a single, uniform compartment, facilitating the understanding of drug distribution and elimination. This model is particularly beneficial for intravenous (IV) bolus administration, where the drug rapidly circulates throughout the body.
The drug's presence in the body is defined by an equation representing the difference between the rates of drug entry and exit. Key parameters—elimination rate constant, half-life,...
One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution01:09

One-Compartment Open Model for IV Bolus Administration: Estimation of Elimination Rate Constant, Half-Life and Volume of Distribution

The one-compartment open model is a simplified approach used in pharmacokinetics to understand the distribution and elimination of a drug administered through an intravenous bolus. This model assumes rapid drug dispersal throughout the body and elimination using a first-order process. Key pharmacokinetic parameters, such as the elimination rate constant (k), half-life (t1/2), and the apparent volume of distribution (Vd), can be estimated from this model. The elimination rate is calculated from...
One-Compartment Open Model for IV Bolus Administration: Estimation of Clearance00:56

One-Compartment Open Model for IV Bolus Administration: Estimation of Clearance

Clearance is a key pharmacokinetic parameter that quantifies the volume of body fluid from which a drug is entirely removed within a specific time frame. It is crucial in assessing how a drug is eliminated from the body and has critical clinical applications.
In the one-compartment open model for intravenous (IV) bolus administration, clearance is estimated by dividing the elimination rate by the plasma drug concentration. This equation leverages the elimination rate constant and the apparent...
Nonlinear Pharmacokinetics: Drug Elimination for IV Bolus Injection00:59

Nonlinear Pharmacokinetics: Drug Elimination for IV Bolus Injection

In pharmacokinetics, the elimination rate of a drug following a capacity-limited model is primarily controlled by two parameters: Vmax and KM. These parameters are crucial in how the drug behaves inside the body after administration.
Following the administration of a single intravenous (IV) bolus injection, we can determine the concentration of the drug in the plasma at any given time. This calculation is achieved using a specific equation that integrates the values of Vmax and KM.
We can also...
Noncompartmental Analysis: Mean Transit, Absorption and Dissolution Time01:02

Noncompartmental Analysis: Mean Transit, Absorption and Dissolution Time

When drugs are administered extravascularly, a comprehensive evaluation through noncompartmental analysis becomes imperative. This analytical approach considers various parameters that play a crucial role in understanding the pharmacokinetics of these drugs.
One of the key parameters is the mean transit time (MTT), which refers to the total duration required for drug molecules to transit through the body. MTT is determined by calculating the ratio of the area under the moment curve to the area...

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Related Experiment Video

Updated: Jul 6, 2026

The Vermicelli and Capellini Handling Tests: Simple quantitative measures of dexterous forepaw function in rats and mice
09:37

The Vermicelli and Capellini Handling Tests: Simple quantitative measures of dexterous forepaw function in rats and mice

Published on: July 21, 2010

Time analysis of hard and soft bolus processing.

Lucie Himmlova1, Tomas Goldmann, Stefan Ihde

  • 1Institute of Dental Research 1st Medical Faculty of Charles University and General Medical Hospital, Prague, Czech Republic. himmlova@seznam.cz

Biomedical Papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia
|March 18, 2008
PubMed
Summary

Mandible movement during chewing varies individually. Food type affects chewing duration, but not the number of chewing cycles, with no impact from age or gender.

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High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)
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High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)

Published on: June 16, 2018

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Last Updated: Jul 6, 2026

The Vermicelli and Capellini Handling Tests: Simple quantitative measures of dexterous forepaw function in rats and mice
09:37

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Published on: July 21, 2010

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05:55

High-throughput, Microscale Protocol for the Analysis of Processing Parameters and Nutritional Qualities in Maize (Zea mays L.)

Published on: June 16, 2018

Area of Science:

  • Biomechanics
  • Dental Implantology
  • Human Physiology

Background:

  • Dental implant success is linked to loading forces.
  • Understanding mandible movement is crucial for assessing occlusal and masticatory forces.

Purpose of the Study:

  • To map lower jaw movement paths during mastication.
  • To differentiate mastication stages, bolus processing duration, and peak movement amplitude.

Main Methods:

  • Three-dimensional motion analysis recorded mandible movements in 51 participants.
  • Sensors tracked jaw motion during extreme positions and while chewing hard/soft foods.
  • Chewing cycles were analyzed for duration, amplitude, and phases (chopping, grinding, swallowing).

Main Results:

  • Masticatory movements demonstrated significant individual variability.
  • Bolus consistency influenced chewing duration but not the frequency of closing movements.
  • Neither participant age nor gender affected bolus processing time or frequency.

Conclusions:

  • Further research is needed to precisely examine chewing force direction and magnitude.
  • Transversal forces during the grinding phase are critical factors in tooth and implant overloading.