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Este documento es una contribución bibliográfica para los estudiantes que toman un primer curso de Programación de Computadoras a nivel universitario. El estudio del material incluido en los primeros doce capítulos no tiene pre-requistos, solamente el interés en conocer un lenguaje actual que posteriormente pueda ser usado como el soporte para resolver computacionalmente problemas de diferente nivel de complejidad en ingeniería, matemáticas y otras áreas. Sin embargo, es deseable que los interesados tengan algun conocimiento básico de la lógica matemática.

The present work is directed towards developing a better understanding on strengths characteristics of concrete using as a partial replacement of cement by marble dust powder and sand by stone dust. The Dissertation work is carried out with M30 grade concrete for which the marble powder is replaced by 0%, 5%, 10%, 15%, 20% by weight of cement. For all the mixes compressive, flexural and split tensile strengths are determined at different days of curing apart from this the beams were casted and tested under flexural, the load and deflection are noted simultaneously and also the crack pattern were observed. In addition to this, sand is replaced with stone dust (SD) by 10%, 20% and 30% along with cement is replaced with MP by 0%, 10% and 20% by weight for M30 grades of concrete. Only 3 cubes were casted for various percentage replacements of sand with SD and cement with MP for 7days and 28 days compressive strength. The results of the present investigation indicate that marble dusts incorporation results insignificant improvements in the compressive, flexural and split tensile strengths of concrete and The load carrying capacity of RMP RCC beams {mix2 and mix3} is more compared to RCC conventional beams up to 10% of replacement and also for stone dusts and marble dust incorporation results insignificant improvements in the compressive strengths of concrete up to 20% of SD and 10% of MP of replacement.

The possibility of using bioenergy as a climate change mitigation measure has sparked a discussion of whether and how bioenergy production contributes to sustainable development. We undertook a systematic review of the scientific literature to illuminate this relationship and found a limited scientific basis for policymaking. Our results indicate that knowledge on the sustainable development impacts of bioenergy production is concentrated in a few well-studied countries, focuses on environmental and economic impacts, and mostly relates to dedicated agricultural biomass plantations. The scope and methodological approaches in studies differ widely and only a small share of the studies sufficiently reports on context and/or baseline conditions, which makes it difficult to get a general understanding of the attribution of impacts. Nevertheless, we identified regional patterns of positive or negative impacts for all categoriesenvironmental, economic, institutional, social and technological. In general, economic and technological impacts were more frequently reported as positive, while social and environmental impacts were more frequently reported as negative (with the exception of impacts on direct substitution of GHG emission from fossil fuel). More focused and

The port of Salerno, one of the largest on the Tyrrhenian coast, was implanted in the Middle Ages west of the city. Deteriorated over time due to neglect and serious problems of cover-up afflicting the area, it was replanted after the unification of Italy, creating a closed basin with the mouth turned to the east. The wrong orientation and the massive landfill phenomena supervening, led to the severe erosion of the eastern beach, on which it stood the city. In order to cope with the phenomena, in the last decades of the nineteenth and early twentieth centuries, multiple defense interventions were carried out by sheltered cliffs that filled the coast with the total metamorphosis of the coastal strip.