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For the disciplinary training of the undergraduate student in Physics at the Francisco José de Caldas District University, it is essential to understand and analyze the concepts of collision and disintegration of relativistic particles and the conservation laws that govern them, these are immersed within the area of modern physics and quantum mechanics, mandatory core subjects belonging to the 7th and 8th semester curriculum, the aforementioned contents are challenging due to their abstract and complex nature, therefore the need emerges to provide tools that energize and strengthen the interpretation, analysis and therefore the memory fixation of said concepts, which with visual and interactive aids such as Virtual Learning Objects (OVA) provide greater flexibility in teaching and learning. For this, a virtual learning object is designed using the ADDIE instructional model: (Analysis, Design, Development, Implementation and Evaluation) which has a constructivist model that shows the interactions of collisions and decay between particles constituted by the first generations of the model. standard and that give rise to the SU(3) symmetries, the hadrons; Taking bubble chamber experiments as a starting point as a tool that helps solve this abstract nature, this work contemplates the first two stages of the ADDIE model. [ABSTRACT FROM AUTHOR]

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This article studies a continuous rotary mill for the cement industry. Specifically, a model is used population balance, where a law constant wear is the constitutive equation, in order to obtain: the distribution mass of the ball in mill, the total consumption of steel of the balls and the inlet flow of balls for the recharge in steady state.The database was obtained applying the Ball test marked industrial scale in a rotatory mill of the Argos SA company. [ABSTRACT FROM AUTHOR]

The problem of the conservation laws in action at a distance interactions is approached with a treatment based on the stated action for this type of interaction; The variational method is used to find conserved quantities, which are identified with the usual ones (energy, momentum) in agreement with the infinitesimal transformation used to variate the action; As result is that the conserved quantities in this case have a sense different from the usual one, because is not possible to identify energy or momentum in transit between the interacting particles but these quantities must be interpreted like dynamic quantities that are inherent to the world line of each particle, fact that motivates a new interpretation of the importance of the conservation laws in the analysis of interactions. [ABSTRACT FROM AUTHOR]