OPTIMAL CONTROL MODEL OF TUMOR TREATMENT IN THE CONTEXT OF CANCER STEM CELL



COVID-19 and the fragility of Brazilian small farming resilience

Goal: The paper aims to investigate the insights of the resilience mechanisms of Brazilian small farms facing COVID-19.Design / Methodology / Approach: The research path involves three cases studies: two small but relevant producers of fruit and vegetable and a 3 gallon flat back bucket cooperative of family farmers in Rio de Janeiro through semi-s

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Formation of concept of decimal system in Mexican school children

The present study deals with initial formation of concept of decimal system in second year of education at primary school in Mexico (City of Puebla).Our research is based on Activity Theory conception of teaching-learning process and of gradual introduction of scientific concepts in school age.The method has been designed and worked out with the he

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