## Abstract During embryogeny the components of the cytoplasm of a zygote are subject to certain irregularities. This has been investigated with the aid of some probability models and distribution functions. For mitochondria, which are the most important cell components with respect to extraβchromo
A mathematical model for spirometry
β Scribed by Eduardo Massad; Alejandro B. Engel; Miguel A.L. Nicolelis
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 389 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0010-4809
No coin nor oath required. For personal study only.
β¦ Synopsis
A model originally designed to fit population growth data was investigated to determine whether it could fit spirometric traces as a function of time in normal and ill humans and in normal rats, obtained, respectively, by spirometer and whole-body plethysmography. The model showed great accuracy when applied to a simple spirometer coupled with an analog-to-digital converter interfaced with a personal computer. It also proved to be a good alternative for the more expensive and less accurate electronic devices, as derivative systems, and may be an attractive method for research and/or diagnostic centers.
π SIMILAR VOLUMES
In this article we study supercooling from a macroscopic point of view by modeling the evolution of a supercooled body from its liquid state to its solid state. A first model, which would be expected to have discontinuous solutions, is regularized by introducing an intrinsic viscous dissipation. By
A simple mathematical homogeneous model of competition is used to describe Neanderthal extinction in Europe. It considers two interacting species, Neanderthals and Early Modern Men, in the same ecological niche. Using paleontological data we claim that the parameter of similarity, between both speci
An equation for granulation kinetics has been derived on the basis of the mass balance of the material being granulated. The model presented takes into account mechanisms that cause a decrease in the mass of granuie-size groups, i.e. crushing and abrasion, and mechanisms which lead to an increase in
This paper deals with a mathematical model in cell dynamics population originally proposed by M. Rotenberg (1983, J. Theoret. Biol. 103, 181-199). Individual cells are distinguished by their degree of maturity and maturation velocity. Here, all biological rules are considered. We bring new technique