Morphology and initial growth in the germination of dictyosperma album (bory) h. wendl. & drude ex scheffer (Arecaceae) seeds

Dictyosperma album, commonly known as Princess Palm, due to its graceful appearance and its ability to withstand strong hurricane force winds is largely used in landscaping areas. The aim of this work was to describe the diaspores (seeds with the stuck endocarp) morphology and the stages of the D. album germination process. Therefore we concluded that the species germination is of the tubular remote type and begins with the opening of a circular operculum in the fruit endocarp, through which emerges a bulbous and hollow structure, named cotyledonal petiole or embryophore. With the embryo growth, the endosperm is being gradually consumed. The embryo grows approximately up to 10 cm, when the dilation begins in its extremity. Starting from this extensive area, it begins the growth of the primary root and the opening of a longitudinal rift, through which emerges the aerial part that is composed by two sheaths that cover the first juvenile leaf. In this phase, the emergence of secondary roots is observed. The first leaves are simple and lance-shaped.

Changes on facial profile in the mixed dentition, from natural growth and induced by Balters' bionator appliance

Objective: The purpose of this study was to evaluate the facial profile changes induced by Balters' bionator appliance in Class II division 1 patients, at mixed dentition stage. Methods: The sample consisted of 28 prepubertal individuals at stages 1 and 2 of skeletal maturation (CVM), which were divided in two groups. The experimental group consisted of 14 individuals (7 boys and 7 girls, initial mean age of 8y12m) which were treated with Balters' bionator appliance for 14.7 months. The effects of treatment were compared to a control group of 14 subjects (7 boys and 7 girls, initial mean age of 8y5m) with Class II malocclusion, division 1, not orthodontically treated, which were followed up for 15.4 months. The statistical analysis was performed using Student's t test, at a significance level of 5%. Results: The results showed that the Balters' bionator appliance promoted a significant increase on the mentolabial angle, in addition to demonstrating a tendency to reduce the facial skeletal convexity, to restrict the maxillary growth and to increase the nasolabial angle and the lower anterior facial height. Conclusion: It can be concluded that the Balters' bionator appliance improved the facial profile of children treated at mixed dentition stage. © 2013 Dental Press Journal of Orthodontics.

Export growth in the world environment: the case of Latin America

Includes bibliography

La industria del aluminio de América Latina y el Caribe: opciones tecnológicas y oportunidades para el crecimiento = The aluminium industry of Latin America and the Caribbean: technological options and opportunities for growth

Incluye Bibliografía

Economic policy measures for the improvement and protection of the environment

Analiza el papel de los instrumentos económicos aplicados a la política ambiental tomando en cuenta las condiciones políticas, sociales, administrativas y económicas que pueden existir al momento de ser aplicados.

Programa de trabajo estadístico internacional para América Latina y el Caribe, 1995-1996: Subprograma 2: estadísticas e indicadores del medio ambiente = Programme of international statistical work for Latin America and the Caribbean, 1995-1996: Subprogramme 2: activities in the field of environment statistics and indicators

Incluye Bibliografía

Latin America and the Caribbean: the dynamics of population and growth

Incluye Bibliografía

Report of the first meeting of the focal points appointed by the governments of the signatory countries of the declaration on the application of principle 10 of the Rio Declaration on Environment and Development in Latin America and the Caribbean, Santiago, 6 and 7 November 2012

Incluye Bibliografía

Annotated provisional agenda. Second meeting of the focal points appointed by the Governments of the signatory countries of the Declaration on the application of Principle 10 of the Rio Declaration on Environment and Development in Latin America and the Caribbean

Incluye Bibliografía

Provisional agenda. Second meeting of the focal points appointed by the Governments of the signatory countries of the Declaration on the application of Principle 10 of the Rio Declaration on Environment and Development in Latin America and the Caribbean

Incluye Bibliografía

Report of the second meeting of the focal points appointed by the governments of the signatory countries of the declaration on the application of principle 10 of the Rio Declaration on Environment and Development in Latin America and the Caribbean, Guadalajara, Mexico, 16 and 17 April 2013

Incluye Bibliografía

Honduras: assessment of the damage caused by hurricane Mitch, 1998: implications for economic and social development and for the environment

Includes bibliography

Guatemala: assessment of the damage caused by hurricane Mitch, 1998: implications for economic and social development and for the environment

Includes bibliography