Influencia de diferentes niveles de Nitrógeno combinado y sin combinar con Glomus Fasciculatum sobre el cultivo de Tomate (Original)

The tomato cultivation is the great economical importance on the world.  In the present work the use of the mycorrhizal fungi and the nitrogenated fertilization in the growth, nutrition and yield of tomato (Solanum lycopersicum, Lin.)  variety Vyta  were carried out. The experiment in field with a randomly blocks design with 8 treatments and 4 replicate at Cautillo's locality in Jiguaní municipality belonging Granma province were executed. In these experiment was combined Glomus fasciculatum with the 60% and 75% of nitrogen indicated for this cultivation and phosphorus and a fixed bottom of potassium and phosphorus were compared. The results evidenced the effectiveness of strains of Glomus fasciculatum over yields on ganvisol chromic soil. The system optimization with the reduction of 40% of the nitrogen and an yield increase over of the doses taken as reference.El cultivo del tomate es de gran importancia económica a nivel mundial. El presente trabajo se realizó con el objetivo de evaluar la utilización de los hongos micorrizógenos arbusculares y la fertilización nitrogenada en el crecimiento, la nutrición y el rendimiento del tomate (Solanum lycopersicum, Lin.) variedad Vyta. Se desarrolló un experimento de campo con un diseño en bloques al azar con 8 tratamientos y 4 réplicas en la localidad de Cautillo, municipio de Jiguaní en la provincia de Granma. Se combinó la cepa Glomus fasciculatum con el 60% y el 75% del nitrógeno recomendado para este cultivo y un fondo fijo de fósforo y potasio. Los resultados mostraron la efectividad de la cepa Glomus fasciculatum sobre el rendimiento en un suelo Fersialítico Pardo Rojizo. Se logró la reducción de un 40% del nitrógeno y un incremento de los rendimientos por encima de las dosis tomadas como referencia

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved

Strategies and performance of the CMS silicon tracker alignment during LHC Run 2

The strategies for and the performance of the CMS silicon tracking system alignment during the 2015–2018 data-taking period of the LHC are described. The alignment procedures during and after data taking are explained. Alignment scenarios are also derived for use in the simulation of the detector response. Systematic effects, related to intrinsic symmetries of the alignment task or to external constraints, are discussed and illustrated for different scenarios