Information and knowledge: the diffusion of information and communication technologies in the Argentine manufacturing sector

Includes bibliography

Desarrollo de ventajas competitivas: PYMEs exportadoras exitosas en Argentina, Chile y Colombia

Incluye Bibliografía

Developing competitive advantages: successful export SMEs in Argentina, Chile and Colombia

Includes bibliography

Life, the universe, and everything: An education outreach proposal to build a traveling astrobiology exhibit

Astrobiology is a transdisciplinary field with extraordinary potential for the scientific community. As such, it is important to educate the community at large about the growing importance of this field to increase awareness and scientific content learning and expose potential future scientists. To this end, we propose the creation of a traveling museum exhibit that focuses exclusively on astrobiology and utilizes modern museum exhibit technology and design. This exhibit (the Astrobiology Road Show), organized and evaluated by an international group of astrobiology students and postdocs, is planned to tour throughout the Americas. Copyright © 2013, Mary Ann Liebert, Inc. 2013.

Comparing submerged and solid-state fermentation of agro-industrial residues for the production and characterization of lipase by Trichoderma harzianum

Lipase production by Trichoderma harzianum was evaluated in submerged fermentation (SF) and solid-state fermentation (SSF) using a variety of agro-industrial residues. Cultures in SF showed the highest activity (1.4 U/mL) in medium containing 0.5 % (w/v) yeast extract, 1 % (v/v) olive oil and 2.5 C:N ratio. This paper is the first to report lipase production by T. harzianum in SSF. A 1:2 mixture of castor oil cake and sugarcane bagasse supplemented with 1 % (v/w) olive oil showed the best results among the cultures in SSF (4 U/g ds). Lipolytic activity was stable in a slightly acidic to neutral pH, maintaining 50 % activity after 30 min at 50 C. Eighty percent of the activity remained after 1 h in 25 % (v/v) methanol, ethanol, isopropanol or acetone. Activity was observed with vegetable oils (olive, soybean, corn and sunflower) and long-chain triacylglycerols (triolein), confirming the presence of a true lipase. The results of this study are promising because they demonstrate an enzyme with interesting properties for application in catalysis produced by fermentation at low cost. © 2012 Springer-Verlag and the University of Milan.

Toward a more integrated approach to problems and policies of regional development in Latin America

Includes bibliography

Proyecciones de la poblacion urbana y rural por sexo y edad de Guatemala por metodos mixtos

Incluye Bibliografía

Estimación de la mortalidad infantil para el subcentro de salud de Villa Altagracia 1988; método del hijo previo

Incluye Bibliografía

A esquerda católica na formação do PT

Pós-graduação em Ciências Sociais - FFC

Oportunidades y retos económicos de China para México y Centroamérica

Incluye Bibliografía

Información para la gestión de riesgo de desastres: Estudio de caso de cinco países: Colombia

Incluye Bibliografía

La dimensión ambiental del desarrollo y su planificación

Incluye Bibliografía