82 research outputs found

    "Estrategias para la mejora continua de la calidad de los almacenes de Inesco Perú SAC"

    Get PDF
    El propósito del presente estudio es plantear estrategias que ayuden a la Empresa lnesco a la mejora continua de sus almacenes. Para poder lograr el propósito del presente estudio, se realizaron una serie de visitas programadas a los almacenes de la empresa lnesco S.A. e lnesco Perú S.A.C., en las-cuales se-programaron auditorias lo que nos ayudó a seleccionar el problema. En base al estudio realizado, se pudo determinar las necesidades de los almacenes de lnesco Perú S.A.C. y plantear estrategias dirigidas al control, organización, recursos humanos y sistemas que ayudarán a la mejora continua de la empresa.Tesi

    Análisis de áreas de actividad en sociedades cazadoras-recolectaras: el caso del abrigo de Santa Marta

    Get PDF
    As análises realizadas mediante Sistemas de Informação Geográfica (SIG), complementadas por estudos químicos dos pisos, análises da distribuição de artefatos e a criação de fotoplanos, permitem a avaliação de áreas de atividade em sociedades de caçadores-coletores. Esses estudos podem ser complementados com análises de microresíduos e traços de uso mediante microscópios metalográficos e microscópio eletrônico (MEB) com a finalidade de avaliar melhor a funcionalidade dos artefatos associados a áreas específicas. O propósito dessas análises é uma perspectiva multidisciplinar no estudo da vida cotidiana das sociedades pré-cerâmicas, e aqui são apresentados os resultados do abrigo Santa Marta, Chiapas, México, como estudo de casoThe analysis through Geographic Information Systems (GIS), supplemented by chemical studies of living floors, analysis of the distribution artifacts and the creation of photoplanes allows the evaluation of activity areas in huntergatherers societies These studies can be complemented with analysis of micro debris and traces of use through metallographic microscopy and electron microscopy (SEM) in order to a better evaluation about the functionality of the artifacts associated with specific areas. The aim of this analysis is a multidisciplinary approach on the study of the everyday life of preceramic societies and here we present the results of Santa Marta Rockshelter in Mexico as a case stud

    Arrangement of Livestock Potential for Climate Change Adjustment in Jimaguayú, Camaguey, Cuba

    Get PDF
    The purpose of this paper was to make a contribution to the environmental arrangement of the livestock potential in the municipality of Jimaguayú, Camagüey, Cuba. The indicators restrictions, categories, and conflicts of the livestock potential in the region were identified and located on a map. Additionally, the policies, guidelines, regulations and standards for proper environmental management in each livestock area were determined. The study concluded that the potential of livestock activity consists in environmentally recommended use in the main eight of the seventeen secondary environmental areas that make up the region. One of them was considered for secondary use. In terms of categories, the municipality comprises 126.9 km2 without livestock potential, including several settlements and water reservoirs; 115.7 km2 were identified as having a poor potential; 316.3 km2 had a mid-potential; and 225.4 km2 was high. The previous contributed to the environmental arrangement of the livestock potential in the municipality of Jimaguayú, Camagüey. Accordingly, the restrictions, indicators, categories, and conflicts observed in the sector were determined, and their use was recommended for development in the secondary environmental areas with some potential, as well as to set up policies and general and specific guidelines

    Clasificación preliminar de especies de jardín según sus requerimientos hídricos en la región de Murcia

    Get PDF
    El desarrollo económico y social de la Región de Murcia ha conllevado desde la década de los 80 un considerable aumento de la superficie ajardinada, tanto de carácter público como privado. Esta circunstancia, unida a los graves problemas de escasez de agua, pone de manifiesto la importancia del establecimiento de jardines de bajo consumo hídrico.Este trabajo forma parte del proyecto de investigación regional PR02-03-2 financiado por la Dirección General de Investigación y Transferencia Tecnológica

    Arrangement of Livestock Potential for Climate Change Adjustment in Jimaguayú, Camagüey, Cuba

    Get PDF
    The purpose of this paper was to contribute to environmental arrangement of livestock potential in the municipality of Jimaguayú, Camagüey, Cuba. The indicators, restrictions, categories, and conflicts of livestock potential in the region were identified and placed on a map. Additionally, the policies, guidelines, regulations, and standards for proper environmental management in each livestock raising area were determined. The study concluded that the potential of livestock activity consists in the environmentally recommended use as principal of eight of the seventeen secondary environmental areas that make up the region. One of them was considered for secondary use. In terms of categories, the municipality comprises 126.9 km2 with no livestock potential. It includes several settlements and water reservoirs; 115.7 km2 were identified as poor potential; 316.3 km2 had a mid-potential; and 225.4 km2 was high. The previous contributed to the environmental arrangement of livestock potential in the municipality of Jimaguayú, Camagüey. Accordingly, restrictions, indicators, categories, and conflicts observed in the sector were determined in order to make recommendations for livestock development in the secondary environmental areas with some potential. It was also useful to set up policies and general and specific guidelines

    Purification of a fragment obtained by autolysis of a PIIIb-SVMP from Bothrops alternatus venom

    Get PDF
    Snake Venom Metalloproteinases (SVMPs) represent 43.1% of the components in Bothrops alternatus venom and play an important role in envenomation. Disintegrins and disintegrin-like domains are released by proteolytic processing of PII and PIII classes of SVMPs respectively and are potent inhibitors of integrin–ligand interaction. Baltergin is a PIIIb-SVMP isolated from this venom and able to undergo autolysis in vitro, giving rise to a stable disintegrin-like/cystein-rich fragment (baltergin-DC). Conditions of baltergin autolysis were adjusted in order to carry out the purification of baltergin-DC and its effect on cell adhesion was studied. Autolysis was maximal at 37 °C and a pH range of 7.0–8.0. Baltergin-DC amino-terminal sequence begins with IISPPVCGNELLEVGEECDCGTPENCQNECCDAATC, which shows a high degree of homology with other disintegrin-like proteins. Baltergin and purified baltergin-DC were both able to inhibit C2C12 adhesion to fetal bovine serum (FBS) coated plates, indicating that a non-catalytic process is involved, probably mediated by binding to membrane integrins. Baltergin-DC, lacking proteolytic action, becomes an attractive molecule for future studies on blocking integrin–ligand interactions.Fil: Van de Velde, Andrea Carolina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Bioquímica. Laboratorio de Investigación en Proteínas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; ArgentinaFil: Gay, Claudia Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Departamento de Bioquímica. Laboratorio de Investigación en Proteínas; ArgentinaFil: Olivera Moritz, Milene Nobrega de. Universidade Federal de São Carlos; BrasilFil: dos Santos, Patty Karina. Universidade Federal de São Carlos; BrasilFil: Bustillo, Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; ArgentinaFil: Rodríguez, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; ArgentinaFil: Acosta, Ofelia Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional del Nordeste. Facultad de Ciencias Veterinarias; ArgentinaFil: Biscoglio, Mirtha Josefa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaFil: Sobreiro Selistre de Araujo, Heloisa. Universidade Federal de São Carlos; BrasilFil: Leiva, Laura Cristina Ana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; Argentin

    Antifungal films based on starch-gelatin blend, containing essential oils

    Full text link
    [EN] The antimicrobial activity of essential oils (EO) is very well-known and it has been reported that incorporating them into edible films based on biopolymers extends the food's shelf-life. In this study, cinnamon, clove and oregano EO, at 25% with respect to the polymer, were incorporated into glycerol plasticized starch-gelatin blend films (ratio 1:1) in order to elucidate their effect on the physical (barrier, mechanical and optical), structural and antifungal properties of the films. Whereas EOs exhibited no significant effect on tensile behavior in the case of casting films conditioned at 53% relative humidity and 25 degrees C, the EO compounds did significantly reduce the water vapor and oxygen permeability of the films. Likewise, the EOs increased the films' transparency but reduced their gloss. Despite the fact that about 60% of the incorporated EOs were lost during the film drying step, they exhibited antifungal activity against the two tested fungal species, Colletotrichum gloesporoides (CG) and Fusarium oxysporum (FOG), as revealed by the in vitro agar diffusion method. (C) 2016 Elsevier Ltd. All rights reserved.The authors acknowledge the financial support provided by the Ministerio de Economia y Competitividad-Spanish Government (AGL2013-42989-R).Acosta-Davila, SC.; Chiralt, A.; Santamarina Siurana, MP.; Rosello Caselles, J.; González Martínez, MC.; Cháfer Nácher, MT. (2016). Antifungal films based on starch-gelatin blend, containing essential oils. Food Hydrocolloids. 61:233-240. doi:10.1016/j.foodhyd.2016.05.008S2332406

    Clues from Spitzer/IRS spectra on the Compton thickness and the existence of the dusty torus

    Get PDF
    [Context]: Most of the optically classified low-ionisation, narrow emission-line regions (LINERs) nuclei host an active galactic nucleus (AGN). However, how they fit into the unified model (UM) of AGN is still an open question. [Aims]: The aims of this work are to study at mid-infrared (mid-IR) (1) the Compton-thick nature of LINERs (i.e. hydrogen column densities of NH> 1.5 × 1024 cm-2) and (2) the disappearance of the dusty torus in LINERs predicted from theoretical arguments. [Methods]: We have compiled all the available low spectral-resolution, mid-IR spectra of LINERs from the InfraRed Spectrograph (IRS) onboard Spitzer. The sample contains 40 LINERs. We have complemented the LINER sample with Spitzer/IRS spectra of PGQSOs, Type-1 Seyferts (S1s), Type-2 Seyferts (S2s), and StarBurst (SB) nuclei. We studied the AGN compared to the starburst content in our sample using different indicators: the equivalent width of the polycyclic aromatic hydrocarbon at 6.2 μm, the strength of the silicate feature at 9.7 μm, and the steepness of the mid-IR spectra. We classified the spectra as SB-dominated and AGN-dominated, according to these diagnostics and compared the average mid-IR spectra of the various classes. Moreover, we studied the correlation between the 12 μm luminosity, νLν(12 μm), and the 2−10 keV energy band X-ray luminosity, LX(2−10 keV). [Results]: In 25 out of the 40 LINERs (i.e. 62.5%), the mid-IR spectra are not SB-dominated, similar to the comparison S2 sample (67.7%). The average spectra of both SB-dominated LINERs and S2s are very similar to the average spectrum of the SB class. The average spectrum of AGN-dominated LINERs is different from the average spectra of the other optical classes, showing a rather flat spectrum at 6-28 μm. We find that the average spectrum of AGN-dominated LINERs with X-ray luminosities LX(2−10 keV) > 1041 erg/s is similar to the average mid-IR spectrum of AGN-dominated S2s. However, faint LINERs (i.e. LX(2−10 keV) < 1041 erg/s) show flat spectra different from any of the other optical classes. The correlation between νLν(12 μm) and LX(2−10 keV) for AGN nicely extends towards low luminosities only if SB-dominated LINERs are excluded and if the 2−10 keV band X-ray luminosity is corrected in Compton-thick LINER candidates. [Conclusions]: We find that LINERs proposed as Compton-thick candidates at X-ray wavelengths may be confirmed according to the X-ray to mid-IR luminosity relation. We show evidence that the dusty-torus disappear when their bolometric luminosity is below Lbol ≃ 1042 erg/s. We suggest that the dominant emission at mid-IR of faint LINERs might be a combination of an elliptical galaxy host (characterised by the lack of gas), a starburst, a jet, and/or ADAF emission. Alternatively, the mid-IR emission of some of these faint LINERs could be a combination of elliptical galaxy plus carbon-rich planetary nebulae. To reconcile the Compton-thick nature of a large number of LINERs without dusty-torus signatures, we suggest that the material producing the Compton-thick X-ray obscuration is free of dust.This research has been supported by the Spanish Ministry of Economy and Competitiveness (MINECO) under the grant (project refs. AYA2013-42227-P, AYA 2012-39168-C03-01, and AYA 2010-15169) and by La Junta de Andalucia (TIC 114). AAH acknowledges support from grant AYA2012-31447. D.D. acknowledges support from grant 107313 from PAPIIT, UNAM. C.R.A. is supported by a Marie Curie Intra European Fellowship within the 7th European Community Framework Programme (PIEF-GA-2012-327934).Peer Reviewe

    Do all roads lead to Rome? Exploring community trajectories in response to anthropogenic salinization and dilution of rivers

    Get PDF
    Abiotic stress shapes how communities assemble and support ecological functions. However, it remains unclear whether artificially increasing or decreasing stress levels would lead to communities assembling predictably along a single axis of variation or along multiple context-dependent trajectories of change. In response to stress intensity alterations, we hypothesize that a single trajectory of change occurs when trait-based assembly prevails, while multiple trajectories of change arise when dispersal-related processes modify colonization and trait-filtering dynamics. Here, we tested these hypotheses using aquatic macroinvertebrates from rivers exposed to gradients of natural salinity and artificially diluted or salinized ion contents. Our results showed that trait-filtering was important in driving community assembly in natural and diluted rivers, while dispersal-related processes seemed to play a relevant role in response to salinization. Salinized rivers showed novel communities with different trait composition, while natural and diluted communities exhibited similar taxonomic and trait compositional patterns along the conductivity gradient. Our findings suggest that the artificial modification of chemical stressors can result in different biological communities, depending on the direction of the change (salinization or dilution), with trait-filtering, and organism dispersal and colonization dynamics having differential roles in community assembly. The approach presented here provides both empirical and conceptual insights that can help in anticipating the ecological effects of global change, especially for those stressors with both natural and anthropogenic origins
    • …
    corecore