Optical fibers to measure temperature vertical profile at sea

The paper is focus in the use the optical fiber to measure the temperature in various heigh at the same time to get a temperature vertical variation. The temperature measurements are puntual while the Bragg gratings located in the fiber.Peer Reviewe

U B V R I Photometry of Stellar Structures throughout the Disk of the Barred Galaxy NGC 3367

We report new detailed surface U, B, V, R, and I photometry of 81 stellar structures in the disk of the barred galaxy NGC 3367. The images show many different structures indicating that star formation is going on in the most part of the disk. NGC 3367 is known to have a very high concentration of molecular gas distribution in the central regions of the galaxy and bipolar synchrotron emission from the nucleus with two lobes (at 6 kpc) forming a triple structure similar to a radio galaxy. We have determined the U, B, V, R, and I magnitudes and U - B, B - V, U - V, and V - I colors for the central region (nucleus), a region which includes supernovae 2003 AA, and 79 star associations throughout NGC 3367. Estimation of ages of star associations is very difficult due to several factors, among them: filling factor, metallicity, spatial distribution of each structure and the fact that we estimated the magnitudes with a circular aperture of 16 pixels in diameter, equivalent to $6''.8\sim1.4$ kpc. However, if the colors derived for NGC 3367 were similar to the colors expected of star clusters with theoretical evolutionary star tracks developed for the LMC and had a similar metallicity, NGC 3367 show 51 percent of the observed structures with age type SWB I (few tens of Myrs), with seven sources outside the bright surface brightness visible disk of NGC 3367.Comment: Accepted for publication (abr 2007) in The Astronomical Journal (July 2007 issue

Polymeric endovascular strut and lumen detection algorithm for intracoronary optical coherence tomography images

Polymeric endovascular implants are the next step in minimally invasive vascular interventions. As an alternative to traditional metallic drug-eluting stents, these often-erodible scaffolds present opportunities and challenges for patients and clinicians. Theoretically, as they resorb and are absorbed over time, they obviate the long-term complications of permanent implants, but in the short-term visualization and therefore positioning is problematic. Polymeric scaffolds can only be fully imaged using optical coherence tomography (OCT) imaging—they are relatively invisible via angiography—and segmentation of polymeric struts in OCT images is performed manually, a laborious and intractable procedure for large datasets. Traditional lumen detection methods using implant struts as boundary limits fail in images with polymeric implants. Therefore, it is necessary to develop an automated method to detect polymeric struts and luminal borders in OCT images; we present such a fully automated algorithm. Accuracy was validated using expert annotations on 1140 OCT images with a positive predictive value of 0.93 for strut detection and an R^2 correlation coefficient of 0.94 between detected and expert-annotated lumen areas. The proposed algorithm allows for rapid, accurate, and automated detection of polymeric struts and the luminal border in OCT images

The spherical primitive and perlin noise method to recreate realistic aggregate shapes

An algorithm to recreate virtual aggregates with realistic shapes is presented in this paper. The algorithm has been implemented in the Unity 3D platform. The idea is to recreate realistically the virtual coarse and crushed aggregates that are normally used as a material for the construction of roads. This method consists of two major procedures: (i) to combine a spherical density function with a noise matrix based on the Perlin noise to obtain shapes of appropriate angularity and, (ii) deform the shapes until their minor ferret, aspect ratio and, thickness are equivalent to those wanted. The efficiency of the algorithm has been tested by reproducing nine types of aggregates from different sources. The results obtained indicate that the method proposed can be used to realistically recreate in 3D coarse aggregates

Learning experiences about intangible heritage conservation for sustainability in biosphere reserves

This paper presents case studies on different approaches to sustainable development carried out in the UNESCO MAB (Man and Biosphere) World Biosphere Reserve Network in Latin America and the Caribbean. In 2012, Latin America and the Caribbean had 116 biosphere reserves designated in 21 countries. In this region several biosphere reserves have implemented important management actions towards sustainable development by conserving ecosystem services and biodiversity (UNESCO 2006; 2008). These case studies highlight good practices on the use of traditional knowledge by scientific research and education for cultural and biological diversity conservation to the benefit of local and Indigenous communities. They focus on improving recognition of the unique ecological knowledge of these communities in Cabo de Hornos (Chile) and Bosawas (Nicaragua), and in the Caribbean: Sierra del Rosario and Cuchilla del Toa (Cuba). Moreover, they explore and reinforce the links between biological and cultural diversities in these outstanding sites, through local and Indigenous knowledge for the sustainable management of those sites.Cet article présente des études de cas de différentes approches du développement durable réalisées sous l’égide du Réseau mondial des réserves de biosphère de la division Homme et biosphère de l’UNESCO en Amérique latine et dans les Caraïbes. En 2012, l’Amérique latine et les Caraïbes possédaient 116 réserves de biosphère désignées dans 21 pays. Dans cette région, plusieurs réserves de biosphère ont mis en œuvre d’importantes actions de gestion visant le développement durable en conservant les services écosystémiques et biodiversité. UNESCO 2006; 2008). Ces études de cas mettent en lumière les bonnes pratiques concernant l’usage qui est fait du savoir traditionnel par la recherche et l’enseignement scientifiques en vue de la conservation de la diversité culturelle et biologique au bénéfice des communautés locales et autochtones. Elles se concentrent sur l’amélioration du savoir écologique unique de ces communautés du cap Horn (Chili) et de la réserve Bosawas (Nicaragua) ainsi que, dans les Caraïbes, de la Sierra del Rosario et de la Cuchillas del Toa (Cuba). En outre, elles explorent et renforcent les liens entre la diversité culturelle et la diversité biologique dans ces sites exceptionnels par le biais du savoir local et autochtone pour la gestion durable de ces sites

Experimental Study based on the Implementation of a Regulatory Framework for the Improvement of Cyber Resilience in SMEs

Currently, applying regulations oriented to cybersecurity, cyber resilience is relevant to face the high rates of cyberattacks, which have caused an interruption in the operational processes of organizations, generating an economic loss, and affecting the continuity of their business processes on the web. In this scenario, small and medium-sized enterprises (SMEs) are the most affected due to their weak technological infrastructure. Given this, this experimental study was developed to implement a regulatory framework for the improvement of cyber resilience; the criteria anticipate, resist, recover and evolve presented significant statistical values of improvement after the application of the experiment. This research contributes to counteract the refusal to use information technologies for business development; Improvement actions were carried out to face threats and computer vulnerabilities to which organizations are exposed when carrying out operations in cyberspace

Combinatorial RNA Design: Designability and Structure-Approximating Algorithm

In this work, we consider the Combinatorial RNA Design problem, a minimal instance of the RNA design problem which aims at finding a sequence that admits a given target as its unique base pair maximizing structure. We provide complete characterizations for the structures that can be designed using restricted alphabets. Under a classic four-letter alphabet, we provide a complete characterization of designable structures without unpaired bases. When unpaired bases are allowed, we provide partial characterizations for classes of designable/undesignable structures, and show that the class of designable structures is closed under the stutter operation. Membership of a given structure to any of the classes can be tested in linear time and, for positive instances, a solution can be found in linear time. Finally, we consider a structure-approximating version of the problem that allows to extend bands (helices) and, assuming that the input structure avoids two motifs, we provide a linear-time algorithm that produces a designable structure with at most twice more base pairs than the input structure.Comment: CPM - 26th Annual Symposium on Combinatorial Pattern Matching, Jun 2015, Ischia Island, Italy. LNCS, 201

Immobilization of Proteins in Poly-Styrene-Divinylbenzene Matrices: Functional Properties and Applications

Supports based on poly-styrene-divinylbenzene (PSD) are commercially available since a long time ago. However, they are not commonly used as enzyme immobilization matrices. The main reason for this lies in the negative effect of the very hydrophobic surface on enzyme stability that produces the instantaneous enzyme inactivation in many instances. However, they have recently regained some impact in enzyme immobilization. They are easy to modify, and have been prepared with different modifiers. We will pay special attention to the coating of these supports with ionic liquids, which permits to have the ionic liquid phase anchored to the solid and modulate the enzyme properties without risk of losing these expensive and potentially toxic compounds. Thus, this review will present the covalent or physical immobilization of enzymes on PSD supports, submitted to different modifications. Moreover, lipases immobilized via interfacial activation on some naked PSD supports have shown some unexpected improvement in their catalytic properties, with uses in reactions like hydrolysis, esterification or transesterification.We gratefully recognize the support from the Spanish Government, CTQ2013-41507-R and CNPq (Brazil). The predoctoral fellowships for Ms. García-Galán (Spanish Government), Mr K. Hernandez (I3P-CSIC) and Mr dos Santos (CNPq, Brazil) are also recognized. ). Á. Berenguer-Murcia thanks the Spanish Ministerio de Ciencia e Innovacion for a Ramon y Cajal fellowship (RyC-2009-03813)

Evaluation of the silver species nature in Ag-ITQ2 zeolites by the CO oxidation reaction

The authors thank the Spanish Ministry of Economy and Competitiveness through RTI2018-101784-B-I00 (MINECO/FEDER) and SEV-2016-0683 projects for the financial support. We gratefully acknowledge ALBA synchrotron for allocating beamtime (proposal 2015091414) and the CLAESS beamline staff for their help and technical support during our experiment. CG and NB thank the TUW Innovative Project GIP165CDGC. CG, SP, VT, NB and GR are thankful for financial support from the Austrian Science Fund (FWF) through projects DK+ Solids4Fun (W1243) and ComCat (I 1041-N28). I. Lopez Hernandez is grateful to Generalitat Valenciana and European Social Fund for the pre doctoral grant ACIF2017.López-Hernández, I.; García Yago, CI.; Truttmann, V.; Pollit, S.; Barrabés, N.; Rupprechter, G.; Rey Garcia, F.... (2020). Evaluation of the silver species nature in Ag-ITQ2 zeolites by the CO oxidation reaction. 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Generalized model for dynamic percolation

We study the dynamics of a carrier, which performs a biased motion under the influence of an external field E, in an environment which is modeled by dynamic percolation and created by hard-core particles. The particles move randomly on a simple cubic lattice, constrained by hard-core exclusion, and they spontaneously annihilate and re-appear at some prescribed rates. Using decoupling of the third-order correlation functions into the product of the pairwise carrier-particle correlations we determine the density profiles of the "environment" particles, as seen from the stationary moving carrier, and calculate its terminal velocity, V_c, as the function of the applied field and other system parameters. We find that for sufficiently small driving forces the force exerted on the carrier by the "environment" particles shows a viscous-like behavior. An analog Stokes formula for such dynamic percolative environments and the corresponding friction coefficient are derived. We show that the density profile of the environment particles is strongly inhomogeneous: In front of the stationary moving carrier the density is higher than the average density, $\rho_s$, and approaches the average value as an exponential function of the distance from the carrier. Past the carrier the local density is lower than $\rho_s$ and the relaxation towards $\rho_s$ may proceed differently depending on whether the particles number is or is not explicitly conserved.Comment: Latex, 32 pages, 4 ps-figures, submitted to PR