Results 11 to 20 of about 37,981 (219)

Kinetic Study of Biogas Production from Animal Manure and Organic Waste in Semarang City by Using Anaerobic Digestion Method

open access: yesIndonesian Journal of Chemistry, 2021
The biogas fermentation from animal manure and organic waste was investigated with a comparison percentage of raw material used inside the digester with the anaerobic digestion process. Animal manure consists of cow dung and chicken manure, while organic
Fahmi Arifan   +2 more
doaj   +1 more source

Biological and statistical interpretation of size-at-age, mixed-effects models of growth [PDF]

open access: yesRoyal Society Open Science, 2020
The differences in life-history traits and processes between organisms living in the same or different populations contribute to their ecological and evolutionary dynamics.
Simone Vincenzi   +2 more
doaj   +1 more source

Periodic functions related to the Gompertz difference equation

open access: yesMathematical Biosciences and Engineering, 2022
We investigate periodicity of functions related to the Gompertz difference equation. In particular, we derive difference equations that must be satisfied to guarantee periodicity of the solution.
Tom Cuchta , Nick Wintz
doaj   +1 more source

Modeling Postoperative Nerve Regeneration Using Diffusion MRI: A Preclinical Study of a Novel Mathematical Approach. [PDF]

open access: yesMuscle Nerve
ABSTRACT Introduction/Aims Nerve regeneration after injury must occur in a timely fashion to restore function. Current methods of assessment provide limited information following trauma, resulting in delayed management and suboptimal outcomes. In this study, we evaluated the ability of diffusion magnetic resonance imaging (MRI) and a mathematical model
Esteve IM   +16 more
europepmc   +2 more sources

Ever since gompertz [PDF]

open access: yesDemography, 1997
AbstractIn 1825 British actuary Benjamin Gompertz made a simple but important observation that a law of geometrical progression pervades large portions of different tables of mortality for humans. The simple formula he derived describing the exponential rise in death rates between sexual maturity and old age is commonly referred to as the Gompertz ...
S J, Olshansky, B A, Carnes
openaire   +2 more sources

Potential autonomous vehicle ownership growth in Hungary using the Gompertz model

open access: yesProduction Engineering Archives, 2023
Autonomous Vehicles (AVs) are anticipated to bring forth a multitude of advantages for upcoming mobility.These potential benefits and many others vary substantially by the market share of AVs.
Alatawneh Anas, Torok Adam
doaj   +1 more source

Gompertz-power series distributions [PDF]

open access: yesCommunications in Statistics - Theory and Methods, 2015
In this paper, we introduce the Gompertz power series class of distributions which is obtained by compounding Gompertz and power series distributions. This distribution contains several lifetime models such as Gompertz-geometric, Gompertz-Poisson, Gompertz-binomial, and Gompertz-logarithmic distributions as special cases.
Jafari, Ali Akbar, Tahmasebi, Saeid
openaire   +2 more sources

Dinámica de crecimiento y curvas de extracción de nutrientes de Pennisetum sp. (Maralfalfa)

open access: yesRevista Mexicana de Ciencias Pecuarias, 2020
El crecimiento de una especie, así como la concentración y extracción de nutrientes en el forraje, se pueden conocer a través de modelos matemáticos. Se utilizaron las ecuaciones de Gompertz y Logistic para estudiar el crecimiento, un modelo potencial ...
Oscar López-Astilleros   +4 more
doaj   +1 more source

Preliminary Observation of Biogas Production from a Mixture of Cattle Manure and Bagasse Residue in Different Composition Variations

open access: yesInternational Journal of Renewable Energy Development, 2023
The need of renewable energy is paramount important as it is expected to replace fossil energy. One of renewable energy commonly used for rural area is biomass-based energy.
H Hadiyanto   +6 more
doaj   +1 more source

Performance, Growth Curves and Carcass Yield of Four Strains of Broiler Chicken [PDF]

open access: yesBrazilian Journal of Poultry Science, 2019
The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were ...
BRF Nogueira   +6 more
doaj   +1 more source

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