Currently remote sensing, based on satellite images is one of the most important source of information for multitemporal change detection. From all types of satellite images, the multispectral images present the advantage of characterizing the earth surface in different bands; each band provides different and useful information. In this work we propose a new methodology based on linear PCA to extract useful and meaningful information from signals provided by the remote sensing, and based on it, detect temporal changes Experiments based on images of the satellite CBERS-2B corresponding to the urban and peri urban region of Rio Cuarto of Córdoba state in Argentina have given satisfactory results in change detection.

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The relation of product to user directly involves perceptual and sensory aspects; touch, sight, taste, smell and hearing. Among them, there is an important area, but little explored: olfactory perception of certain products. In this sense, the present work aims to contribute to this area of research through the study of encapsulation techniques of orange essential oil and its implementation in the olfactory perception focusing on product design and materials science. New materials and processes are important when we want to stimulate emotions and new research on technological innovation (Rocha et al., 2010; Hekkert and Schifferstein, 2008). The method used was the interfacial polymerization and ceramic microcapsules were formed with tetraethyl orthosilicate synthesized by the sol-gel method (Ghosh, 2006). The microcapsules were produced in the laboratory and characterized by Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). An important factor in the development of the encapsulation consists in the control release of the scent during the life of the product and the application on different medium such as fabric, wood, among others. As Nelson (2002) and Monllor et al. (2007) emphasize only the microencapsulation process is able to maintain a fragrance for a longer on a fabric with aromatic microcapsules configured by the presence of essential oils as the active material. The shell provides greater stability as oil dispersion in the medium. As a result, it was possible to produce shells with orange oil encapsulated.

Introduction: The implementation of interdisciplinary care strategies for the follow-up of patients with asthma has proven to be very effective in improving the long-term evolution of these children. Objectives: Describe the clinical, functional and therapeutic characteristics of patients with a diagnosis of uncontrolled severe asthma (UCSA), identify the differences in the characteristics in the management between patients with difficult-to-treat severe asthma (SDCA) and treatment-resistant severe asthma (STRA Materials: Analytical study of serial cases, patients were evaluated for 6 months, patients with UCSA diagnosis were admitted to the Pneumonology Service of the Pediatric Hospital of Córdoba, with ages between 5 and 15 years old. Results: 23 patients entered the study. 47.82% were defined as SDCA and 52.17% STRA. During the first 6 months of the program; hospitalizations were only 4% (p: 0.001). Besides, the number of visits to the emergency room decreased to 39.13% (p: 0.003). Regarding the Inhalation technique, 73.9% (n: 17) presented improvement (p: 0.0001). Only 13% (n = 3) of the patients continued with ACT <20 (p: 0.0001). We found differences in the use of rescue medication (p: 0.003) and greater attendance at Emergency Rooms (p: 0.005), during the 6-month evaluation process, in favor of the group of treatment-resistant asthmatics Conclusion: Implementing this type of interdisciplinary program allowed a marked improvement in all modifiable variables of asthma in patients with SDCA. All this not only leads to improving the management of patients with UCSA.

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