![]() In the end detailed results are presented, demonstrating the improvement of the final model, and how the proposed sensor fusion ensure a pre-specified level of accuracy.Įn los últimos años, el uso del registro de imágenes 3D está teniendo un fuerte impacto en áreas como museología, arqueología y antropología. To circumvent this difficulty we propose an alignment technique based on the fusion of ICP with close-range digital photogrammetry and a non-invasive procedure in order to generate a final accurate model. Such control has demonstrated how, in some situations, the ICP-based alignment can lead to incorrect results. Since the scientific focus is centered on the 3-D model overall dimensional accuracy, a methodology for its quality control is described. The paper reports all the steps of the acquisition procedure, from the project planning to the solution of the various problems due to range camera calibration and to material non optically cooperative. In this paper, the acquisition process of the 3-D digital model of the Maddalena by Donatello, a wooden statue representing one of the major masterpieces of the Italian Renaissance which was swept away by the Florence flood of 1966 and successively restored, is described. However, the routine application of three-dimensional (3-D) modeling to Heritage conservation still requires the systematic investigation of a number of technical problems. Three-dimensional digital modeling of Heritage works of art through optical scanners, has been demonstrated in recent years with results of exceptional interest. We also apply LIBS to the determination of the composition of acheological objects belonging to different pre-Columbian cultures. In particular, we show applications to the identification of trace elements in Hominide teeth, of interest concerning the analysis of eating habits. On the other hand, we use the spectroscopic analysis of the plasma generated as a result of laser ablation (LIBS- laser Induced Breakdown Spectroscopy-) for the determination of the elementary composition of unique pieces in anthropology and archaeology. Damage fluence thresholds for 17 different XIXth century types of papers, made by processing textiles, were determined. On one hand, treatments of fabrics, coins, bones, and other archeological objects are shown, as well as applications to the preservation of covers, front of books and old manuscripts made in rag paper. Surface ablation with nanosecond laser pulses was applied to preservation, cleaning and compositional identification of objects of cultural value. “UV–vis absorption spectroscopy and multivariate analysis as a method to discriminate tequila” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2007, 66,(1),129-134. Norma Oficial Mexicana NOM-006-SCFI-2005, Bebidas-Alcohólicas-Tequila-Especificaciones. European Food Research and Technology, Vol. Wrobel K., Determination of aldehydes in tequila by high-performance liquid chromatography with 2,4-dinitrophenylhydrazine derivatization. “El agave Tequilana Weber y la producción de Tequila”. “Production of Tequila from agave: historical influences and contemporary processes”. Jobson, Applied Multivariate Data Analysis, Regresion and Experimental Design, vol 1, Springer-Verlag, New York, 1991. Data Analysis for the Laboratory and Chemical Plant”. “EAT-by-LIGHT: Fiber-Optic and Micro-Optic Devices for Food Quality and Safety Assessment” IEEE Sensors Journal, Vol. “UV-vis spectroscopy and multivariate calibration (PLS) as a tool for identification and clasification of tequilas”, enviado a publicación.Īnna Grazia Mignani, Leonardo Ciaccheri, Constanza Cucci, et al. The results show a nice grouping of tequilas according to the corresponding brand such that any new testing tequila could be classified among the studied brands.Īna Celia Muñoz-Muñoz, O. pp: 22 - 32 - 24 - in contrast to chromatography techniques. Revista Electrónica Nova Scientia, Nº 2 Vol. The methodoly shows results in minutes and can be performed in situ, this Contreras, U. This work describes the used methodology for those alcoholic beverages which is complementary to the methodology used through analytical chemistry. and we were looking for similarities and differences among the tested brands for grouping and predictions over new testing samples. 40 samples of rested Tequilas were purchased from bars and liquor stores in the cities of Zacatecas, Zac and Leon, Gto. This methodology can be performed in situ therefore it can be implemented as a protection means of the beverage brand. The UV-Visible absorption spectra of four well-known brands of rested Tequilas were analized using multivariate tecniques in order to identify brands. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |