ABSTRACT The article presents background, fundamentals and references of cooperation in the formation of graduates in Spanish Language for non-Spanish speakers of the University of Havana. Later, it is shown the definition and operationalization of the object of study and the analysis of the curriculum of the mentioned career from the dimensions and indicators determined to its effect. Finally, there are proposed some methodological recommendations that could contribute to its improvement.

RESUMEN El artículo presenta antecedentes, fundamentos y referentes de la cooperación en la formación de licenciados en Lengua Española para no Hispanohablantes de la Universidad de La Habana. Posteriormente, se exhibe la definición y operacionalización del objeto de estudio y el análisis del plan de estudios de la citada carrera a partir de las dimensiones e indicadores determinados a su efecto. Por último, se proponen algunas recomendaciones metodológicas que pudieran contribuir a su perfeccionamiento.

The yield of thiophene from furan and H2S was investigated using selected catalyst carriers (alumina, active carbon and silica gel) and active ingredients (silicotungstic, phosphomolybdic and phosphotungstic acids) to obtain the optimized synthesis parameters. The experimental results indicated that the yield of thiophene reached a maximum when the supported catalyst was alumina and the active ingredient was phosphotungstic acid. Furthermore, the reaction mechanism of the optimized reactive system was studied by the density functional theory (DFT) method. The calculated energy profile indicated that there were four transition states in the reaction process.