1,720,980 research outputs found
Control of spoiler Pseudomonas spp. on fresh cut vegetables by neutral electrolyzed water
No full textIn the present study, we evaluated the antimicrobial activity of neutral electrolyzed water (NEW) against 14 strains of spoilage Pseudomonas of fresh cut vegetables under cold storage. The NEW, produced from solutions of potassium and sodium chloride, and sodium bicarbonate developed up to 4000mg/L of free chlorine, depending on the salt and relative concentration used. The antimicrobial effect of the NEW was evaluated against different bacterial strains at 105 cells/ml, with different combinations of free chlorine concentration/contact time; all concentrations above 100mg/L, regardless of the salt used, were found to be bactericidal already after 2min. When catalogna chicory and lettuce leaves were dipped for 5min in diluted NEW, microbial loads of mesophilic bacteria and Enterobacteriaceae were reduced on average of 1.7logcfu/g. In addition, when lettuce leaves were dipped in a cellular suspension of the spoiler Pseudomonas chicorii I3C strain, diluted NEW was able to reduce Pseudomonas population of about 1.0logcfu/g. Thanks to its high antimicrobial activity against spoilage microorganisms, and low cost of operation, the application of cycles of electrolysis to the washing water looks as an effective tool in controlling fresh cut vegetable microbial spoilage contamination occurring during washing steps
Córdoba: camino a una movilidad más amigable
Get PDFFil: Español, Graciela. Universidad Nacional de Córdoba; Argentina.Fil: Baruzzi, Alejandro. Universidad Nacional de Córdoba; Argentina.Fil: Albrieu, María Laura. Universidad Nacional de Córdoba; Argentina.Fil: Baruzzi, Federico. Universidad Nacional de Córdoba; Argentina.Las ciudades que por su crecimiento y ubicación geopolítica se convierten en grandes
centros urbanos deben tener la capacidad de visualizar las condiciones urbanas y los
desafíos que una ciudad sustentable requiere para acompañar su crecimiento” Plan de
movilidad ciudad de Córdoba- 2014-
Desde el año 2012, el gobierno municipal viene elaborando planes y acciones con la
finalidad de transformar la movilidad y los espacios urbanos con una visión integral y las
construir una sociedad ambientalmente amigable, saludable y con un desarrollo sostenible
para todas las personas.-
El presente trabajo muestra las acciones que se vienen desarrollando, teniendo en cuenta
los ejes de movilidad sustentables (planteados en el Plan de Movilidad) y los consensos con
participación ciudadana, las que pueden analizarse en tres etapas:
Primer etapa: Planteo por ordenanza (Marco regulatorio de movilidad-) de los cambios
de hábitos, cambio de paradigma en la movilidad en la ciudad, los ejes, objetivos y
lineamientos estratégicos Se identifican y potencian los modos mas sustentables y la
prioridad sobre los otros modos, elaborando planes de reordenamiento del transporte
urbano de colectivos garantizando la conectividad con equidad, la accesibilidad, así también
la integración funcional y tarifaria.- Pliego para la licitación de reordenamiento del Transporte
masivo por colectivos . Plan de MovilidadSegunda etapa: La planificación integral, la coordinación y el consenso de diferentes
actores dieron como resultado proyectos y acciones en espacios urbanos y en la
infraestructura existente que se aprovechó para compartir y vincular adecuadamente
permitiendo desalentar el uso del vehículo particular como medio preferido para desplazarse
hasta el destino.Fil: Español, Graciela. Universidad Nacional de Córdoba; Argentina.Fil: Baruzzi, Alejandro. Universidad Nacional de Córdoba; Argentina.Fil: Albrieu, María Laura. Universidad Nacional de Córdoba; Argentina.Fil: Baruzzi, Federico. Universidad Nacional de Córdoba; Argentina.Ingeniería del Transport
Transporte activo en la ciudad de Córdoba. Caso bicicleta
Get PDFFil: Albrieu, María Laura. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Baruzzi, Alejandro. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Baruzzi, Federico. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Dapas, Oscar. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Garrido, Guillermo. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.En la ciudad de Córdoba los medios de transporte individuales motorizados son los preferidos para los desplazamientos cotidianos, marcadamente radiales, con destino hacia la zona céntrica, con una longitud que no supera los cuatro kmts. Los principales motivos de los mismos son ocupacionales. Estas características de la movilidad en la ciudad, convierten al tránsito, en la zona céntrica y sus vías de acceso, en un problema con consecuencias económicas, sociales y ambientales no deseadas. En este marco, es necesario el fortalecimiento de alternativas de transporte más convenientes, como es el transporte colectivo de pasajeros, la caminata y la bicicleta. El clima templado, la alta concentración de viajes dentro de los 4 Km y la gran cantidad de población estudiantil joven de la ciudad hacen del medio bicicleta un medio propicio de transporte. A partir del año 1983 a través de un Proyecto de Red de Ciclovías realizado por el Municipio se comenzó la construcción de ciclovías hasta totalizar 103,48 Km a fines de la década de 1990. A principios del 2013 se inauguraron 2.5 Km de bicisendas en el área central buscando integrar la infraestructura existente para que pueda ser utilizada como alternativa de transporte. El presente trabajo presenta el estudio desarrollado para integrar los kilómetros de ciclovías y bicisendas en funcionamiento mediante una red complementaria que permita satisfacer motivos no solo recreacionales.www.clatpu.orgFil: Albrieu, María Laura. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Baruzzi, Alejandro. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Baruzzi, Federico. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Dapas, Oscar. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Garrido, Guillermo. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Ingeniería del Transport
Prunus Mahaleb Fruit Fermentation for New Functional Foods and Beverages
No full textPrunus mahaleb (P. mahaleb) is a deciduous tree native to Mediterranean region, resistant to dry climate and several diseases. P. mahaleb fruits are small, highly pigmented drupes representing a new source of bioactive compounds, above all anthocyanins. Since its astringent and sour taste, it is not considered not-edible. This study aimed to improve sensory characteristics of P. mahaleb fruits after fermentation with different Saccharomyces cerevisiae and Lactobacillus plantarum strains. Methods: Aqueous suspension of intact P. mahaleb fruits were inoculated with four lactic acid bacterial strains and one yeast strains, as single or mixed starter formulation. Microbial growth kinetics were followed during 20 days of fermentation characterizing both fermented fruits and fermentation broth by HPLC analysis and their organoleptic properties. Results: Results indicated that all strains were able to grow and ferment fruits and that all L. plantarum strains were able to survive to simulated gastric and pancreatic digestions. However, the starter L. plantarum FG69 + S. cerevisiae Li180-7 had the best impact on sensory characteristics. Conclusions: Since sourness of P. mahaleb fruits was strongly reduced by fermentation with a new starter co-culture made up with L. plantarum and S. cerevisiae strains, it is possible to conclude that a new promising functional and probiotic food and beverage was obtained by exploiting fruits from threes currently growing on marginal land for agricultural production
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
