Qualitative parameters of piapara semen (Leporinus elongatus) were evaluated before and after hormonal induction with carp pituitary extract at 2.5 mg.kg(-1) of live weight. The progressive motility, the spermatic vigor and the lifetime of the spermatozoa were higher before the hormonal induction (P > 0.05). The percentage of normal spermatozoa and spermatozoa with secondary pathologies did not...

Abstract We analyze the cosmological solutions of f ( T , B ) gravity using dynamical system analysis where is torsion scalar and be boundary term scalar. In our work, we assume three specific models. For first model, consider $$ f(T,B)=f_{0}(B^{k}+T^{m})$$ f ( T ,</mm...

A qualitative model of the spatio-temporal behaviour of distributed parameter systems based on physical fields is presented . Field-based models differ from the object-based models normally used in qualitative physics by treating parameters as continuous entities instead of as attributes of discrete objects . This is especially suitable for natural physical systems, e.g . in ecology . The model...

A qualitative model of the spatio-temporal behaviour of distributed parameter systems based on physical fields is presented. Field-based models differ from the object-based models normally used in qualitative physics by treating parameters as continuous entities instead of as attributes of discrete objects. This is especially suitable for natural physical systems, e.g. in ecology. The model is ...