Biochemical reactions occurring during anaerobic digestion have been modelled using reaction kinetic equations such as first-order, Contois and Monod which are then combined to form mechanistic models. This work considers models which include between one and three biochemical reactions to investigate if the choice of the reaction rate equation, complexity of the model structure as well as the i...

demographic parameters of the ladybeetle, serangium montazerii fursch feeding on citrus whitefly, dialeurodes citri ashmead were determined on two host plants, page tangerine and thompson navel orange. this study was carried out under laboratory conditions (25 ± 1 °c and rh of 60 ± 5% and a photoperiod of 16: 8 h (l: d). total pre-adult periods of the lady beetle were 20.84 ± 0.302, 19.27 ± 0.2...

The micromixing efficiency in the rotor–stator spinning disk reactor is studied for increasing injection flow rates of limiting reagent. Using both Villermaux–Dushman method and second Bourne reaction, an increase segregation index was found with rate. Mechanistic models describing micro- mesomixing were reviewed implemented to describe effects A simplified turbulent-dispersion model this trend...

In molecular dynamics and related fields one considers dynamical descriptions of complex systems in full (atomic) detail. In order to reduce the overwhelming complexity of realistic systems (high dimension, large timescale spread, limited computational resources) the projection of the full dynamics onto some reaction coordinates is examined in order to extract statistical information like free ...

Berthelot's equation, k,(T) = A,exp{-Dlc,T}, provides a good description of the high-pressure rate coefficient for associative reactions such as CH3 + CH3, CH3 + OH, and CH3+ H. The parameter D may be used to characterize an effective temperature-dependent barrier, AE,ff = DkiT2, which is due to the internal energy, i.e. rotational and vibrational energy, or the centrifugal barrier of the assoc...

A numerical study is made of transient heat and mass transfer in metal hydride beds in the hydriding process with the addition of internal aluminum plates. The two-dimensional equations governing the hydration kinetics, hydrogen ̄ow and heat transfer are solved by using the iterative method based on the ®nite-volume technique. It is found that the heat transfer is enhanced by the installation o...

Estimation of parameter sensitivities for stochastic chemical reaction networks is an important and challenging problem. Sensitivity values are important in the analysis, modeling and design of chemical networks. They help in understanding the robustness properties of the system and also in identifying the key reactions for a given outcome. In a discrete setting, most of the methods that exist ...