249 research outputs found
Using WWW to improve software development and maintenance: application of the LIGHT system to ALEPH programs
Programmers who develop, use, maintain, modify software and faced with the problem of scanning and understanding large amounts of documents, ranging from source code to requirements, analysis and design diagrams, user and reference manuals etc. This task is non trivial and time consuming LIGHT, LIfe cycle Global HyperText is an attempt to solve the problem using WWW technology. The basic idea is to make all the software documents, including code, available and cross-connected on the WWW. The first application of this concept to go in production is JULIA?LIGHT, a system to convert and publish on WWW the software documentation of the JULIA reconstruction program of the ALEPH experiment at CERN European Organisation for Particle Physics, Geneva
Effects of central administration of Coriandrum sativum essential oil on anxiety-like behavior in chicks
Fil: Gastón, S. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Gastón, S. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas. Laboratorio de Tecnología Química; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Aplicada; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Coriandrum sativum ("cilantro") is an herb with culinary use. Coriandrum essential oil
(CEO) is an aromatic complex mixture of volatile terpenes with antibacterial, antifungal,
antioxidant activity and when it is systemically administered it has anxiolytic and
antidepressant effects. Linalool is a major constituent of CEO and its inhalation has
anxiolytic and sedative effects.www.ricifa.com.arFil: Gastón, S. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Gastón, S. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Cid, M. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas. Laboratorio de Tecnología Química; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Aplicada; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Química Orgánica-Biológica; Argentina.Fil: Salvatierra, N. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Biológicas y Tecnológicas; Argentina.Otras Ciencias Biológica
Lunar laser ranging in infrfared at hte Grasse laser station
For many years, lunar laser ranging (LLR) observations using a green
wavelength have suffered an inhomogeneity problem both temporally and
spatially. This paper reports on the implementation of a new infrared detection
at the Grasse LLR station and describes how infrared telemetry improves this
situation. Our first results show that infrared detection permits us to densify
the observations and allows measurements during the new and the full Moon
periods. The link budget improvement leads to homogeneous telemetric
measurements on each lunar retro-reflector. Finally, a surprising result is
obtained on the Lunokhod 2 array which attains the same efficiency as Lunokhod
1 with an infrared laser link, although those two targets exhibit a
differential efficiency of six with a green laser link
Screening of some Ascomycetes and Basidiomycetes species for the production of 1- phenylethanol enantiomerically pure
Fil: Decarlini, M. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Colavolpe, B. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Albertó, E. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Química. Cátedra de Química Aplicada; Argentina.The asymmetric reduction of prochiral ketones represents a pivotal transformation for the
production of chiral alcohols. Several of them are considered as key starting materials in
obtaining pharmaceuticals.Fil: Decarlini, M. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Colavolpe, B. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Albertó, E. Instituto Tecnológico de Chascomús. Instituto de Investigaciones Biotecnológicas. Laboratorio de Micología y Cultivo de Hongos Comestibles; Argentina.Fil: Vázquez, A. Universidad Católica de Córdoba. Facultad de Ciencias Químicas; Argentina.Fil: Aimar, L. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Departamento de Química. Cátedra de Química Aplicada; Argentina.Otras Ciencias Química
Preparation of multifunctional hollow fiber nanofiltration membranes by dynamic assembly of weak polyelectrolyte multilayers
In this work, we investigate the effect of preparation conditions for dynamic layer-by-layer (LbL) coating, to prepare multifunctional hollow fiber nanofiltration (NF) membranes. Dynamic coating was performed at constant pressure and at variable cross flow speeds. In this way, polyelectrolyte multilayers (PEMs) were formed of the weak polyelectrolytes poly(acrylic acid) (PAA) and poly(allylamine hydrochloride) (PAH), on a negatively charged polyethersulfone ultrafiltration (UF) support. The resulting membrane performance was investigated and compared to membranes prepared by different methods (dip coating and dead end filtration), and it was found to be comparable. It was shown that PAH/PAA multilayers can be fabricated reproducibly and homogenously using optimised dynamic LbL deposition conditions on single fiber module (surface area of 6.2 cm2) as well as on a module of 15 fibers (surface area of 67 cm2). Moreover, the approach of dynamic coating could be easily up scaled to coat existing UF modules. The prepared membranes reject the solutes on the basis of size exclusion and Donnan exclusion, retaining small organic solutes and divalent ions. Membranes terminated with PAA exhibit a low fouling tendency compared to membranes terminated with PAH and compared to the UF support membrane. Moreover, if severe membrane fouling would occur after prolonged use, the PEM coating, including any attached foulants can be removed by rinsing with a solution that combines a low pH and a high salinity (pH 3, 3 M). The surface of bovine serum albumin (BSA) fouled membranes were successfully cleaned at least twice, after which a new PEM coating could be re-applied by active coating
Estimating landmarks on 2D images of beetle mandibles
Studying links between phenotype/genotype and agricultural practices is one of the main topics in agronomy
research. Phenotypes can be characterized by informations like age, sex of animals/plants and more and more
often with the help of image analysis of their morphology. From now, getting good quality of images for numerous
individuals is easy but that leads to design automatic procedures to replace manual exploration of such amount of
images. Several bottlenecks have been identified to analyze automatically images. One of them is segmentation
of selected area and/or shapes, and another well-known one is setting automatically morphometric landmarks.
Landmarks are points on the object which can be used to identify or to classify the objects.
It exists a lot of methods to experiment landmarks setting, depending on the image contents. This work has been
initiated by using the article of Palaniswamy et al. "Automatic identification of landmarks in digital images"[6].
They proposed a method based on calculus of a probabilistic Hough transform coupling to a template matching
algorithm. They applied their method to the Drosophilia wings. In our study, we have gotten a set of 291 beetles
. For each one 2D images of 5 different parts of their anatomy have been taken: mandibles left and right, head,
pronotum and elytra. The first part of the project was to test how the Palaniswamy’s method could be used to
analyze them. We have implemented all the required algorithms to compute positions of mandibles landmarks and
compared the obtained results to landmarks which have been manually set by biologists. We will see that even
positions automatically obtained are not fully precised, if we used centroid size to characterize mandibles, the size
computed from automatic landmarks is closed to this one computed from the manual ones. Future works will focus
on definition of a semi-landmarks procedure which would add some features as the measure of the curve between
two landmarks
TENDENCIAS Y PERSPECTIVAS DE LA CIENCIA ENFERMERA.
To think about nursing as science has only happened from the last decades of the past century because of the scientific study of the phenomena that integrate the care of the human health. The millenarian knowledge and the historical and philosophical dimensions about human care have outlined the role of the caretakers in both, temporal and space context until arriving to
be defined within the framework of a profession from the nineteenth century with the contributions of Nightingale. With her, a stage begins, where new practices are tried to solve
educative and administrative problems until 1950. From that moment, a period of investigation and theoretical development starts. However, the present state of the structure of nursing is
incipient. This historical moment appears like decisive for the growth of nursing science. Therefore, that attachment lines are proposed for professional acting: develop own theoretical bases; consolidate thought patterns of nursing; reaffirm abilities; generate evidences around the care to confront the theory in practice; develop the art of care. With regard to the teaching of this subject: develop an integrating vision in the educative institutions about care; impregnate the curriculum transversally with the concept of care from personal experiences of the human health. Concerning administration: strenghten the independent work; construct a contingencial model of management; recognize the multidimensionality of the process of attention of health to organize the nursing care. About the investigation: stimulate and promote the production of
investigation in all the sphers of nursing; theoretical investigations and field work, local, regional and multicentral; generate spaces of communication and discussion of the scientific product. It is fundamental to integrate art and science in the act of care, starting with an aesthetic, wished, reflective and independent praxis to contribute to the development of the
tendencies concerning its knowledge and doing.Pensar a la enfermería como ciencia sólo ha venido a ocurrir a partir de los últimos decenios del siglo pasado a través del estudio científico de los fenómenos que integran el cuidado de la salud humana. Los saberes milenarios, las diferentes dimensiones históricas y filosóficas sobre los cuidados humanos han perfilado el rol de los cuidadores en cada contexto tempo-espacial hasta llegar a ser definidos en el marco de una profesión a partir del siglo XIX, con los aportes de Nightingale. Con ella se inicia una etapa donde se ensayan nuevas prácticas para resolver problemas educativos y administrativos, hasta 1950. A partir de ese momento, comienza un período de desarrollo investigativo y teórico. No obstante, el estado actual de la estructuración de los conocimientos de enfermería es incipiente. Este momento histórico aparece como decisivo para el crecimiento de la disciplina enfermera. En tal sentido, se proponen líneas de acción para el actuar profesional: *desarrollar bases teóricas propias; *consolidar patrones de pensamiento enfermero; *reafirmar competencias y habilidades; *generar evidencias en torno al cuidado para confrontar la teoría en la práctica; *desarrollar el arte de cuidar. Respecto a la enseñanza de la disciplina: *desarrollar una visión
integradora en las instituciones educativas sobre el cuidado; *permear los currícula transversalmente con el concepto del cuidado a partir de experiencias y vivencias de la salud humana. En relación a la administración: *potenciar el trabajo autónomo; *construir un modelo contingencial de gestión; *reconocer
la multidimensionalidad del proceso de atención de la salud para organizar el cuidado enfermero. Sobre la investigación: *estimular y promover la producción de investigaciones en todos los ámbitos del cuidado enfermero: investigaciones teóricas y de campo, locales, regionales y multicéntricas; *generar espacios de comunicación y discusión del producto científico. Es fundamental integrar arte y ciencia en el acto de
cuidado, partiendo de una praxis estética, deseada, reflexiva y autónoma para contribuir al desarrollo de las tendencias respecto a su saber y hacer
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