4,847 research outputs found
Sustainable landscape in arid zones : useful ornamental xeric species
Se analiza el valor económico,
ecológico y paisajístico de especies vegetales,
pertenecientes a la flora espontánea de
Mendoza (Argentina), resistentes a la sequía
y que pueden alcanzar porte arbóreo. Su empleo
ahorra agua de riego en espacios verdes
ornamentales y de protección ambiental.
Se sugiere medidas de conservación de
las especies espontáneas más útiles
paisajísticamente, así como normas generales
sobre métodos de plantación y mantenimiento.
Se recomiendan especies leñosas
espontáneas de la provincia, de bajo requerimiento
hídrico, utilizables paisajísticamente.This paper analyzes the economic,
ecological and landscape value of drought
resistant species from the spontaneous flora
of Mendoza (Argentina). Some of such
species could reach tree size and its use
might save the irrigation water used for ornamental
and environmental protection
areas.
Actions to protect the most useful
spontaneous species, as well as general
rules for plantation and maintenance are
suggested. Spontaneous wooden species of
low water requirements, to use in different
landscape objectives, are recommended.Fil: Codina, Ramón A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Manzano, Enrique R..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Carrieri, Sergio A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Fioretti, Sonia B..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción Agropecuari
Environmental value calculus of the frontal urban gardens. : Mendoza (Argentina)
Los espacios verdes y, en general, la vegetación
que cumple funciones estéticas y de protección
ambiental son valorados, medidos y calculados
por el área destinada al cultivo, en lugar
de basar los cálculos en los elementos vegetales
constitutivos. Esto significa una simplificación excesiva
de la valoración de la vegetación (actual o
proyectada) que no aporta criterios de cuantificación
valorativa necesarios, actualmente, tanto
para preservar vegetación existente como para
políticas de desarrollo urbano y proyectos de ingeniería
del mejoramiento ambiental.
En el presente trabajo se propone aplicar a
la valoración de los jardines frontales urbanos de
la ciudad de Mendoza una metodología cuantitativa
desarrollada por R. Codina et al., que se apoya
en un concepto nuevo que es su influencia
como mejoradores ambientales. La ecuación de
cálculo se integra con índices de valoración como
el Índice de Vegetación Ambientalmente Activa y
el Índice Ambiental Urbanístico, que permiten
cuantificar la importancia urbanística y ambiental
de la vegetación.
También se propone una base para implementar
una política de incentivo de los jardines frontales
mediante la disminución del avalúo valor terreno
del impuesto inmobiliario, en una escala progresiva
según el Índice Ambiental Urbanístico de
cada propiedad, tendiente a la transformación de
la ciudad en una ciudad-jardín, mejorando la calidad
de vida y el atractivo turístico urbano.The green spaces and in general, the
vegetation used for aesthetics and environmental
protection are valuated, measured and calculated
through the area destinated to the cultivation
instead of calculus based in the component vegetal
elements. This means an excessive simplification
in the vegetal valoration (current or
projected) that not contribute with cuantitative
valoration criterion, which are needed today in
preservation of existent vegetation, urban
development policies and in engineering projects
of environmental improvement.
This work proposes the application to the
frontal urbans gardens in Mendoza city, of a
cuantitative metodology developed by R. Codina
et al., which is based in a new concept, it influences
as environmental improvement. The calculus
equation is to be composed of valoration indexes
as the Environmental Active Vegetation Index and
the Urbanistic Environmental Index, that allow the
cuantification of the urbanistic and environmental
importance of vegetation.
Also is proposed a base for the implementation
of an incentive policy of the frontals urban
gardens through the diminution of the real estate
tax land appraisal, in a progressive scale according
the Urbanistic Environmental Index of each
property, tending to transformation the city in a
garden-city, to improve the life´s quality and the
urban touristic charm.Fil: Codina, Ramón A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Passera, Carlos B..
Universidad Autónoma de Nuevo León (México). Facultad de Ciencias BiológicasFil: Naranjo, Gabriela.
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Carrieri, Sergio A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Fioretti, Sonia B..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Manzano, Enrique R..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción Agropecuari
LEARNING ACTIVITIES WITH LEGO ROBOTICS EV3
From May 8th to 12th, 2017 the Taccle 3 training course “Teaching coding to children” (http://www.taccle3.eu/en/tallinn-training-course-guide/) was held in Tallin (Estonia), which will focus on introducing programming in primary schools and teaching children how to code.
The training has been designed by the Taccle 3 project partners.
The training course aimed to develop your own coding competences and also the competences to teach coding to children from 3 to 14 years.
There were five training days during which we learned together, in order to:
Describe the key principles of coding;
Describe the basics of computational thinking;
Use appropriate terminology;
Build on activities teachers and children already do;
Measure progression, differentiate lessons and assess what children have learned;
Link the curriculum to the Taccle3 website.
The final activity developed by these participants was related to use Lego Robotics EV3 in learning activities
The visual resourses in the territorial arrangement : I- Potrerillos (Mendoza, Argentina)
Se presenta la primera etapa del
relevamiento de los recursos paisajísticos de
la provincia de Mendoza, con el ajuste
metodológico efectuado mediante una prueba
piloto desarrollada sobre la Ruta Nac. N°
7, desde el Acceso sur en Luján de Cuyo
(límite este) hasta Potrerillos inclusive (límite
oeste). Los límites norte y sur están
abarcados por el horizonte observable desde
la ruta que atraviesa el área en sentido
este-oeste. Se seleccionaron los puntos representativos
mediante dos tipos de muestreo:
sistemático y discrecional.
En base a la catalogación de los recursos
visuales se diseña una zonificación
referencial general con miras al ordenamiento
territorial y uso del suelo en distintas actividades
de desarrollo futuro: turístico, reservas,
residencial, agrícola, industrial. Se valora
la calidad estética del paisaje aplicando,
además, índices valorativos de la vulnerabilidad
de los espacios a las actividades
humanas (Índice de Naturalidad e Índice de
Fragilidad), para obtener valores de la Calidad
Visual Vulnerable del paisaje.
Estos valores se grafican en planos que
representan las distintas calidades alcanzadas
y se complementa con una descripción de los
puntos analizados, recomendaciones para el
mejoramiento paisajístico a través de introducción
o conducción de vegetación y fotografías
documentales de las vistas analizadas.This paper presents the first stage of
the inventory of visual or landscape
resources of the province of Mendoza. The
metodological adjustment was done in an
area of the high basin of Mendoza river, along
the route n° 7, from the South Access in Luján
of Cuyo, to Potrerillos, as limits east and west.
The observable horizons from the route
crossing the area in east-west direction, are
the nort and south limits. Representative
points were chosen across these limits by
means of sistematic and discretional
sampling.
By the cataloguing of the visual
resources, a general reference zonification
is designed for territorial arrangement and
use of land in future development and
activities such as touristic, reserves, residencial,
agricultural, industrial. The
landscape aesthetic quality is evaluated,
applying in addition, vulnerability valoration
indexes of the spaces to the human
activities (Naturalness index and Fragility
index) to achieve Landscape Vulnerable
Visual Quality values.
These values are plotted in charts that
represents the different achieved qualities
and are complemented with a description of
analized points, recomendations for the
lanscape improvements through vegetable
introduction and management, and documental
pictures of analized views.Fil: Codina, Ramón A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Manzano, Enrique R..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Day, Mario.Fil: Passera, Carlos B..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ciencias BiológicasFil: Fioretti, Sonia B..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Carrieri, Sergio A..
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Cappe, Osvaldo Emilio.
Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ingeniería Agrícol
Parabolic stable surfaces with constant mean curvature
We prove that if u is a bounded smooth function in the kernel of a
nonnegative Schrodinger operator on a parabolic Riemannian
manifold M, then u is either identically zero or it has no zeros on M, and the
linear space of such functions is 1-dimensional. We obtain consequences for
orientable, complete stable surfaces with constant mean curvature
in homogeneous spaces with four
dimensional isometry group. For instance, if M is an orientable, parabolic,
complete immersed surface with constant mean curvature H in
, then and if equality holds, then
M is either an entire graph or a vertical horocylinder.Comment: 15 pages, 1 figure. Minor changes have been incorporated (exchange
finite capacity by parabolicity, and simplify the proof of Theorem 1)
Detection and quantification of classic and emerging viruses by skimmed-milk flocculation and PCR in river water from two geographical areas
Molecular techniques and virus concentration methods have shown that previously unknown viruses are shed by humans and animals, and may be transmitted by sewage-contaminated water. In the present study, river water from urban areas in Barcelona, Spain and Rio de Janeiro, Brazil, were analyzed to evaluate the dissemination of human viruses, while simultaneously optimizing and validating a low-cost concentration method for virus quantification in fresh water. The following three viral groups were analyzed. (i) Recently described viruses: klassevirus (KV), asfarvirus-like virus (ASFLV), and the polyomaviruses Merkel cell, KI and WU (MCPyV/KIPyV/WUPyV). (ii) Gastroenteritis agents: noroviruses (NoV) and rotaviruses (RV). (iii) Human fecal viral indicators in water: human adenoviruses (HAdV) and JC polyomaviruses (JCPyV). Virus detection was based on nested and quantitative PCR assays. Nested PCR assays were developed for KV and ASFLV. The method applied for virus concentration in water samples was a one-step procedure based on a skimmed milk flocculation procedure described previously for seawater. Using spiked river water samples, inter- and intra-laboratory assays showed a viral recovery rate of about 50% for HAdV, JCPyV, NoV and RV with a coefficient of variation ≤ 50%. HAdV and JCPyV were detected in 100% of the river samples from Barcelona and Rio de Janeiro. Moreover, NoV GGII was detected in 100% and MCPyV in 50% of the samples from Barcelona, whereas none of the other viruses analyzed were detected. NoV GGII was detected in 33%, KV in 33%, ASFLV in 17% and MCPyV in 50% of the samples from Rio de Janeiro, whereas KIPyV and WUPyV were not detected. RV were only tested for in Rio de Janeiro and resulted positive in 67% of the samples. The procedure applied here to river water represents a useful, straightforward and cost-effective method that could be applied in routine water quality testing. The results of the assays expand our understanding of the global distribution of the viral pathogens studied here and their persistence in the environment. Fil: Calgua, B.. Universidad de Barcelona; España;Fil: Fumian, T.. Ministerio de Salud de Brasil. Fundacion Oswaldo Cruz; Brasil;Fil: Rusinol, M.. Universidad de Barcelona; España;Fil: Rodríguez Manzano, J.. Universidad de Barcelona; España;Fil: Mbayed, Viviana Andrea. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Virología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; ArgentinaFil: Bofill Mas, S.. Universidad de Barcelona; España;Fil: Miagostovich, M.. Ministerio de Salud de Brasil. Fundacion Oswaldo Cruz; Brasil;Fil: Girones, R.. Universidad de Barcelona; España
Atmospheric dust captation by ornamental species
Se clasificaron 90 especies de árboles
y arbustos de uso frecuente en Mendoza (Argentina)
en base a su capacidad de filtrado
del particulado atmosférico en suspensión.
Se utilizó colectores de polvo atmosférico impregnados
en vaselina líquida como superficie
adherente. Se analizó por turbi-dimetría
en un Hach 2100 P, con lectura en unidades
nefelométricas de turbidez (NTU). Dichos
colectores de polvo se colocaron en el interior
y el exterior de la copa de cada ejemplar,
con un mínimo de 15 repeticiones para cada
posición.
Por diferencia de promedios de lectura
entre el exterior y el interior de la copa se
obtuvo, en cada caso, un valor característico.
Para lograr valores comparables entre
ejemplares, con variaciones producidas por
el follaje, debe referirse la mencionada diferencia
del ancho de copa atravesado por el
aire que transporta el contaminante y una
lectura unitaria, mediante la relación:
ILi =[(Loi -Lci) / (Efi * Loi)] * 100 m-1
donde:
• ILi = índice de lectura interferométrica de
la especie "i"
• Loi= lectura interferométrica exterior (promedio
de NTU externos)
• Lci= lectura interferométrica interior de la
copa (promedio de NTU internos)
• Efi = espesor - expresado en m- de la copa
en línea recta horizontal.
El ILI, por caracterizar cada especie según
su capacidad de captación de polvo atmosférico,
permite el mejor uso de las mismas
en proyectos de espacios verdes para
protección ambiental.Based in the capacity to filtrate the
atmospheric particulate it was established
a classification of 90 vegetable species:
shrubs and trees, frequently used in
Mendoza (Argentina). The method used
atmospheric dust collectors, impregnated in
liquid vaseline as adherent surface, which
are analyzed by a turbidimeter Hach 2100
P, with digital lectures in nefelometric
turbidimeter units (NTU). In the samples
these collectors were situated inside and
outside of the canopy, at least in a number
of 15 repetitions for each position.
By difference of averages lectures
among outside and inside, is reached the
characteristicvalue for the specimen. This
difference must be related to the canopy´s
width crossed by the air current and to the
unitary lecture, to obtain comparable values
among different specimens, with variations
produced by the characteristics of foliage.
Itwas stablishedthe following relation:
ILi = [ (Loi -Lci)/ (Efi * Loi )] * 100[m-1
where
• ILi=interferometric lecture index of the
specie "i"
• Loi = outside interferometric lecture (average
of externals NTU)
• Lci= inside interferometric lecture (average
of internals NTU)
• Efi= width -expressed in m-of canopy crossed
by air current, in horizontal straight line.
The ILI index allow to characterize the
vegetable species in order to their
atmospheric dust captation capacity easing
their utilization in green spaces projects and
in environmental protection.Fil: Codina, Ramón A..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Fioretti, Sonia B..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Pérez, Paola V..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Ureta, Norberto M..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Llera, Joaquín.
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Verd, Patricia.
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Carrieri, Sergio A..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Manzano, Enrique R..
Universidad Nacional de Cuyo. Facultad de Ciencias Agraria
Three strongly correlated charged bosons in a one-dimensional harmonic trap: natural orbital occupancies
We study a one-dimensional system composed of three charged bosons confined
in an external harmonic potential. More precisely, we investigate the
ground-state correlation properties of the system, paying particular attention
to the strong-interaction limit. We explain for the first time the nature of
the degeneracies appearing in this limit in the spectrum of the reduced density
matrix. An explicit representation of the asymptotic natural orbitals and their
occupancies is given in terms of some integral equations.Comment: 6 pages, 4 figures, To appear in European Physical Journal
SoNeUCON_{ABC}Pro: an access control model for social networks with translucent user provenance
Proceedings of: SecureComm 2017 International Workshops, ATCS and SePrIoT, Niagara Falls, ON, Canada, October 22–25, 2017Web-Based Social Networks (WBSNs) are used by millions of people worldwide. While WBSNs provide many benefits, privacy preservation is a concern. The management of access control can help to assure data is accessed by authorized users. However, it is critical to provide sufficient flexibility so that a rich set of conditions may be imposed by users. In this paper we coin the term user provenance to refer to tracing users actions to supplement the authorisation decision when users request access. For example restricting access to a particular photograph to those which have “liked” the owners profile. However, such a tracing of actions has the potential to impact the privacy of users requesting access. To mitigate this potential privacy loss the concept of translucency is applied. This paper extends SoNeUCONABC model and presents SoNeUCONABCPro, an access control model which includes translucent user provenance. Entities and access control policies along with their enforcement procedure are formally defined. The evaluation demonstrates that the system satisfies the imposed goals and supports the feasibility of this model in different scenarios.This work was supported by the MINECO grants TIN2013-46469-R (SPINY: Security and Privacy in the Internet of You) and TIN2016-79095-C2-2-R (SMOG-DEV); by the CAM grant S2013/ICE-3095 (CIBERDINE: Cybersecurity, Data, and Risks); and by the Programa de Ayudas para la Movilidad of Carlos III University of Madrid, Spain (J. M. de Fuentes and L. Gonzalez-Manzano grants)
Isolation and phenotyping of potential stem cells from the umbilical cord of the bottlenose dolphin(Tursiops truncatus)
We have successfully isolated cells with stem-like properties from bottlenose dolphin (Tursiops truncatus) umbilical cord. Our results show that this cetacean species has embryonic fetal and adult stem cells as do humans and other studied mammals. This accomplishment allows to eventually investigate whether dolphins, due to their unique adaptations to aquatic environments, have special stem cell lineages or distinctive mechanisms of cell programming. Further characterization of their potency to differentiate into multiple cell lineages would fulfill numerous applicative purposes. We characterized, developed and refined a new protocol for obtaining potential stem cells from umbilical cord tissues of the bottlenose dolphin. Tissue samples were taken from umbilical cords of successful deliveries immediately after placenta ejection and collection from the water. Umbilical cord samples (2-3 cm3) were excised and subjected to enzymatic digestion and mechanical dissociation. Viable cells from specimens resident in the Oceanografic Valencia were cultured and subsequently isolated and tested for pluripotent characteristics (cell morphology, phenotype and expression of surface markers). Cell viability was confirmed also after freezing/thawing. The established protocol is suitable for collection/isolation/culture of dolphin potential mesenchymal stem cells from dolphin umbilical cord, which can be deposited in cell banks for future research needs
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