Las empresas integradoras en México

Incluye Bibliografía

Streptococcus mutans attachment on a cast titanium surface

This study examined by means of scanning electron microscopy (SEM), the attachment of Streptococcus mutans and the corrosion of cast commercially pure titanium, used in dental dentures. The sample discs were cast in commercially pure titanium using the vacuum-pressure machine (Rematitan System). The surfaces of each metal were ground and polished with sandpaper (#300-4000) and alumina paste (0.3 μm). The roughness of the surface (Ra) was measured using the Surfcorder rugosimeter SE 1700. Four coupons were inserted separately into Falcon tubes contained Mueller Hinton broth inoculated with S. mutans ATCC 25175 (109 cuf) and incubated at 37 °C. The culture medium was changed every three days during a 365-day period, after which the falcons were prepared for observations by SEM. The mean Ra value of CP Ti was 0.1527 μm. After S. mutans biofilm removal, pits of corrosion were observed. Despite the low roughness, S. mutans attachment and biofilm formation was observed, which induced a surface corrosion of the cast pure titanium.

El sector privado en el sistema de salud de Costa Rica

Incluye Bibliografía

ECLAC: forty years of continuity with change

Discurso inaugural del 22 periodo de sesiones de la CEPAL efectuado por el senor Gert Rosenthal, en el cual se refiere en especial al papel pasado, presente y futuro de la Comision en el desarrollo economico y social de la region.

Agriculture as viewed by ECLAC

Includes bibliography

Regions as the product of social construction

Includes bibliography

Some thoughts on the definition of the informal sector

Includes bibliography

José Medina Echavarría and the future of Latin America

Includes bibliography

Political culture and democratic conscience

Includes bibliography

A hopeful view of democracy

Includes bibliography

The challenge of orthodoxy and the ideas of José Medina Echavarría

Includes bibliography

A different concept of the private sector, a different concept of the public sector: notes for a Latin American debate

Presenta un analisis historico comparativo del proceso de modernizacion en America Latina y Europa y reflexiona sobre el debate entre lo publico y lo privado en los procesos de desarrollo economico de America Latina.

Meaning and function of the University: the view of José Medina Echavarría

Analiza el pensamiento del senor Medina Echavarria sobre la Universidad, tema que desarrollo al menos en tres dimensiones: la propiamente sociologica, la filosofica y la etica.

The dilemmas of political legitimacy

Includes bibliography

The social actors and development options

Analiza las ideas de don Jose Medina Echavarria acerca de las clases sociales, tanto de las dominantes como de las dominadas, que representan roles en el desarrollo de America Latina.