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Field test of wood preservatives with Nasutitermes rippertii RAMBUR in Cuba
1996 - IRG/WP 96-10181
A field test of wood preservatives was carried out with Nasutitermes rippertii RAMBUR in the vicinity of the Material Testing Centre „Alexander von Humboldt" in Santiago de las Vegas/ Havana (Cuba) for 12 and 24 months. Test specimens of Pinus sylvestris L., Picea abies (L.) Karst. and Fagus sylvatica L. with dimensions of 25 x 25 x 490 mm³ were arranged vertically or horizontally in a circle of 1.5 m around the termite colony. The biostability of five wood preservatives - „Kombinal TO“ with TBTO, „Hylotox 59“ with Lindane and DDT, "Dohnalit UA" a CFA-salt, "V 51" a CCA-salt and "V 94" a CCF-salt - was tested. For the evaluation of termite attack, the building of galleries during the test and the feeding traces on the test specimens were determined. Additionally, fungal attack by soft rot and decay was macroscopically and microscopically established. Mass loss and strength loss from biological attack on the test specimens were also determined.
W Unger


Estudio comparativo entre postes de Eucalyptus saligna Smith, Pinus caribaea Morelet (pino macho) y Hormigón
2008 - IRG/WP 08-40436
As consequence of the Energy Revolution and the amplification of the communication networks, Cuba carries out significant expenditures of foreign currencies in the import of public service posts. It is presented in this work a synthesis of the current problem in Cuba of the public service posts (PSP), since as answer to the stocks of improvement of the national Electric System, the demand of this selection has been increased notably. They are given to know the superior advantages of the eucalyptus post on that of pine and of concrete, from the technical, economic and environmental point of view. It intends the application of a methodology for the maintenance, care and conservation of the wooden posts, for the continuation of their useful life cycle as well as the forest species of more perspectives with arrangement to the recommended use. Como consecuencia de la Revolución Energética y la ampliación de las redes de comunicación, Cuba realiza significativas erogaciones de divisas en la importación de postes de servicio público. Se presenta en este trabajo una síntesis de la problemática actual en Cuba de los postes de servicio público (PSP), ya que como respuesta a las acciones de mejora del Sistema Eléctrico nacional, la demanda de este surtido se ha incrementado notablemente. Se dan a conocer las superiores ventajas del poste de eucalipto sobre el de pino y de hormigón, desde el punto de vista técnico, económico y ambiental. Se propone una metodología para el mantenimiento, cuidado y conservación de los postes de madera, para la prolongación de su ciclo de vida útil así como las especies forestales de mayores perspectivas con arreglo al uso recomendado.
C Sosa Suárez, I D Velázquez Viera, K Manzanares Ayala