The reparameterization of two classic growth models (the logistic and Gompertz equations), and the dynamic modification of the integrated form of the first of these, was applied to the description of the kinetics and metabolic behaviour of six strains of lactic acid bacteria in four media: three of these from visceral waste from fishing products, and one commercial medium. The descriptions obta...

In this study the effects of temperature on anaerobic co-digestion of saw dust with cattle dung is investigated. It also simulates the biogas production from saw dust with cattle dung at various temperatures. Results showed that high temperature could improve the anaerobic digestion and hence increase the biogas production rates. The operating temperatures used in this study were 35°C, 45°C, an...

The introduction of a hybrid genetic programming method hGP in fitting and forecasting of the broadband penetration data is proposed. The hGP uses some well-known diffusion models, such as those of Gompertz, Logistic, and Bass, in the initial population of the solutions in order to accelerate the algorithm. The produced solutions models of the hGP are used in fitting and forecasting the adoptio...

The aim of this study was to extend the options for screening and characterization of microorganism through kinetic growth parameters. In order to obtain data, automated turbidimetric measurements were accomplished to observe the response of strains of Bacillus coagulans. For the characterization, it was decided to examine the influence of varying concentrations of lignin with respect to bacter...

There are certain assumptions about the baseline distribution and distribution of frailty. Mostly Weibull distribution is considered for baseline hazard but we consider some different baseline distributions. Mostly assumption of gamma distribution is considered for frailty distribution. In this paper also, we consider gamma distribution as frailty distribution and two different baseline distrib...

This paper presents a model for the projection of Chinese vehicle stocks and road vehicle energy demand through 2050 based on low-, medium-, and high-growth scenarios. To derive a gross-domestic product (GDP)-dependent Gompertz function, Chinese GDP is estimated using a recursive dynamic Computable General Equilibrium (CGE) model. The Gompertz function is estimated using historical data on vehi...

The aim of this study was to fit water disappearance and manure production curves at growing–finishing commercial pig farms compare the curve that best describes evolution parameters evaluated, according three variables: age, body weight, pigs’ housing period. Accordingly, 33 cycles were evaluated considering a period 105 days (13,276 pigs—nine weeks old 24.5 kg average weight) during 13 months...

The lack of detailed and analytic study on the risk factors Breast cancer in Nigerian presents us with challenge not knowing distinct to settings. Effectively handling breast treatment co-infected patients is delicate. Some challenges infection include drug-to-drug interactions between procedures required treat cells, thus hormonal drugs burdens patient’s inability comply dosage intake thereby ...

We use a simple model for biological ageing to study the mortality of the population, obtaining a good agreement with the Gompertz law. We also simulate the same model on a square lattice, considering different strategies of parental care. The results are in agreement with those obtained earlier with the more complicated Penna model for biological ageing. Finally, we present the sexual version ...