Juan Manuel Lozano has been an active and committed member of the National Autonomous University of Mexico for over fifty years. He took courses at the career of Physical and Doctoral program in physics at the Faculty of Sciences from 1947 to 1952, still at the headquarters of the Minery Palace, starting his teaching activities and scientific research at the end of that period.

His academic and professional career as a professor at the Sciences Faculty and researcher of the Institute of Physics, was initiated from the switching to Ciudad Universitaria. Twenty years later, having been the Sciences Faculty director from 1969 to 1973, he decisively influenced the planning to change the Sciences Faculty and Institutes headquarters to the Scientific Research Circuit, which took place in since 1976.

His knowledge of many different aspects of our university and its many experiences on them, have done that, in addition to performing its core activities of teaching, research and dissemination in a continuous and successively, he has been invited and joined to committees and UNAM's collegial bodies, in different units and activities. His knowledge of our country, especially in the areas of education, science and culture, have enabled him to participate in the creation and operation of several institutions with national projections. Some of the actions of teacher Lozano and his contributions to the development of science in our university and our country, are presented below so interwoven and enlightening.

In 1950 the Mexican Society of Physics (SMF) was founded at the initiative of Dr. Carlos Fernandez Graef, who serves as director of the Institute of Physics, and as head of the Physics Department at the Sciences Faculty. Juan Manuel participated in the corresponding assembly, becoming a founding member. Dr. Graef was elected president of the SMF and the doctor Marcos Moshinsky was appointed director of the Revista Mexicana de Física (RMF). In 1952 the first volume was published in the Journal, and appeared in two articles of research: "Opera Compton", pp. 44-51, and "Terms of the Frontier and Formalismo s in the Nuclear Scattering", pp. 102-113, being co-authors J.M. Lozano and Francisco Medina. Moshinsky oversaw Juan Manuel and Francisco in their thesis work, being the first on the topic of "Dynamics description of Scattering by a Potential". Both presented their professional examinations in late 1953, in University City, and also published two articles in the RMF, as sole author. In subsequent years Juan Manuel conducted several investigations into various aspects and the problem of dispersion, publishing their results in the RMF and Annals of the Institute of Physics. He also undertook his doctoral thesis work under the supervision of Moshinsky with the theme "Overview and Scattering Causal Relations ", introducing the review in late 1960 and with the joint publication in New Cimento 20.59 (1961).

Juan Manuel has been an active member of the Mexican Society of Physics, participating regularly in their conferences, schools with contributions from physics and dissemination in the Bulletin of the SMF on educational topics, historical, and so on. In 1956 was the Summer School in Nuclear Physics in University City, organized by Marcos Moshinsky and with the participation of additional doctors Rudolph Peierls, Leite Jose Lopez and R. Thomas, as guest lecturers; Juan Manuel was responsible for writing the notes of the Nuclear reactions course. That school was a precursor of the Latin American School of Physics (ELAF), which has been conducted in Mexico regularly every three years from 1959, and other countries in the region in other years. On that first occasion Juan Manuel wrote the notes of the Relations Scattering course of Professor M. Levi and, in 1962, the notes of Analitics properties of Non Relativism Scatter Amplitudes course of Professor Moses Nussenzveig.

On the 1968 ELAF's occasion, was also conducted the First Congress of Latin American Physics in Oaxtepec, Morelos. The contribution of Juan Manuel in this congress within the meetings on education policy was "Summary of the First Inter-American Conference on the teaching of Physics" conference held in Rio de Janeiro in 1963 and which he had already participated. Since the previous decade, Juan Manuel already had been practicing at the UNAM some of the recommendations of the Conference and the Congress, participating in the delivery of specialized and refresher courses for teachers, as well as writing materials, updating curriculas, and so on. And has also continued to do so, individually and institutionally, where they have recognized the needs and has been invited.

In 1959, a group of researchers of the institutes of the Tower of Sciences in University City (Jose Adem, Guillermo Haro, Juan Manuel Lozano, Emilio Lluis, Jose Luis Mateos, Eugenio Mendoza, Arcadio Poveda and Alberto Sandoval) met to talk about the need to create a space for reflection, discussion and dissemination of scientific research projects being undertaken in the country. As a result of that meeting, eight months later was signed the Constitutive Act of the Academy of Scientific Research, which began with 54 distinguished founding members and the Board of Directors consisting of A. Sandoval (chairman), G. Haro (vice president), J. L. Mateos (secretary), and J. Comas (treasurer). For over forty years since the initial dialogue of this group, the commitment of the Mexican Academy of Science is to promote dialogue among scientists with members of civil society and State authorities for diagnosing and resolving national problems. Juan Manuel Lozano belongs to the generation of university committed to Mexico who UNAM recognized as shapers of science, for their personal and institutional contributions.