Search results for " sottosuolo"

An automatic L1-based regularization method for the analysis of FFC dispersion profiles with quadrupolar peaks

2023

Fast Field-Cycling Nuclear Magnetic Resonance relaxometry is a non-destructive technique to investigate molecular dynamics and structure of systems having a wide range of ap- plications such as environment, biology, and food. Besides a considerable amount of liter- ature about modeling and application of such technique in specific areas, an algorithmic approach to the related parameter identification problem is still lacking. We believe that a robust algorithmic approach will allow a unified treatment of different samples in several application areas. In this paper, we model the parameters identification problem as a con- strained L 1 -regularized non-linear least squares problem. Following…

Depositi di travertino nell'area di Via Colonna Rotta a Palermo

2010

Indagini per l'identificazione e la valutazione dell'efficienza delle fondazioni delle costruzioni esistenti

2017

Si espongono alcune considerazioni sulla scelta e la programmazione delle indagini per l'identificazione e la valutazione delle fondazioni delle costruzioni esistenti. Si sottolinea che le indagini debbono necessariamente riguardare anche i terreni di fondazione, in modo da poter costruire un modello del sistema terreno-fondazioni. Si indicano quindi alcuni dei quesiti da porsi preliminarmente per poter finalizzare il programma delle indagini. Si forniscono brevi cenni su vantaggi e svantaggi delle indagini dirette e indirette. Si illustrano, infine, cinque casi concreti per evidenziare la successione più appropriata dei vari accertamenti, la scelta dei mezzi di indagine e gli insegnamenti …

Advanced Formation Fluid Evaluation While Drilling with a New Heavy Gas Detector

2012

In this paper, a chromatograph which exploits the benefits of FID technology optimized for the high resolution detection of heavier hydrocarbon gas components is described. The components analyzed span from n-hexane to toluene. Flame Ionization Detector (FID) technology is not new to gas detection on the field, however it had never been applied to the detection of gases heavier than n-pentane. The instrumentation has been installed and run on a number of wells in different fields and countries, and it has operated as a complement of an advanced surface logging system for a period of two years. Unlike other technologies presently utilized for this scope, this system reduces dedicated equipme…