204 research outputs found
Aplicación móvil basada en realidad aumentada como aporte cultural e informativo de la gastronomía de Guayaquil
pdfLa tecnología de Realidad Aumentada permite interactuar con el contenido virtual dentro del
entorno real, el cual le da un valor importante para aprovechar y aplicar dentro del sector
gastronómico de Guayaquil.
La tesis se centra en el desarrollo de una aplicación multimedia con la Realidad Aumentada
y su implementación como aporte informativo de los platos típicos oriundos de Guayaquil.
El usuario puede interactuar con un código QR y ver la información histórica del plato.
El proyecto busca incorporar tecnología que apoye con los proyectos de inclusión del
Ministerio de Turismo y ayude a promocionar, dando muchos beneficios dentro del ámbito
gastronómico; empezando por el Mercado del Río localizado en el Malecón 2,000, lugar
emblemático de la ciudad.
Se realizaron entrevistas, encuestas con la técnica de muestreo aleatorio sistemático y con la
ayuda de la observación y la experiencia se llegó a la conclusión que la aplicación Riospot
tiene una gran aceptación por parte de los comensales.
Además, el uso de estas aplicaciones móviles con Realidad Aumentada servirá a otros
espacios gastronómicos de Guayaquil a incluir esta novedad y que ayude a fomentar las
visitas para que la experiencia sea diferente, informativa e innovadora.Augmented Reality technology allows interacting with virtual content within the real
environment, which gives it an important value to take advantage and apply in the
gastronomic sector of Guayaquil.
The thesis focuses on the development of a multimedia application with Augmented Reality
and its implementation as an informative contribution to native dishes from Guayaquil. The
user can interact with a QR code and view the historical information of the dish.
The project seeks to incorporate technology that supports inclusion projects of the
Ecuadorian Ministry of Tourism and to help promote, giving many benefits in the
gastronomic field; starting with the Mercado del Río located on Malecón 2,000, an
emblematic place in the city.
Interviews and surveys were carried out with the systematic random sampling technique and
with the help of observation and experience it was concluded that the Riospot application is
widely accepted by diners.
In addition, the use of these mobile applications with Augmented Reality will help other
gastronomic spaces in Guayaquil to include this novelty and help encourage visits so
experience is different, informative and innovative
The effects of native shrub, fencing, and acorn size on the emergence of contrasting co-occurring oak in Mediterranean grazed areas
Producción CientíficaResearch Highlights: The regeneration of Quercus species is usually very difficult in many
oak woodlands transformed by livestock farming. Some studies have reported that shrubs can
facilitate regeneration. However, the strength of interaction may vary depending on, among other
factors, the shrub species and the stress tolerance of the oak species. Moreover, further studies are
necessary to clarify the relative importance of the two facilitation mechanisms in the same community.
Background and Objectives: Cytisus multiflorus (L’Her.) Sweet is a predominant shrub species in
the Mediterranean grazed open-oak-woodlands found in the central west of the Iberian Peninsula
(bioclimatic limit) and is present with Quercus pyrenaicaWilld and Quercus ilex subsp. ballota Samp
trees. Thus, we assessed the effect of these native shrubs and acorn size, and the effect of excluding
large herbivores, on the seedling emergence of two contrasting co-occurring Quercus species under
a bioclimatic limit. Materials and Methods: A manipulative field experiment was carried out
considering four treatments as a combination of shrubs (shrub/no-shrub) and fence (fenced/open)
factors. A total of twenty plots, five replicates for each treatment were available. In each plot,
20 acorns were sown: 10 acorns (5 small and 5 large) for each Quercus species. Acorn emergence was
recorded during the first four years following the sowing. Results: Seedling emergence took place
mostly in the spring of the first year after sowing. The presence of shrub was the main significant
factor and incremented the emergence of both Q. ilex and Q. pyrenaica. The effect of the fence
depended on the Quercus species considered, improving only the emergence of Q. pyrenaica. A
negative effect with the small acorns was detected but only for Q. pyrenaica. In all treatments, Q. ilex
emerged more than Q. pyrenaica. Conclusions: C. multiflorus had a clear facilitative effect on the
seedling emergence of Q. ilex and Q. pyrenaica, which was much greater than the physical effect that
acorn size and excluding large herbivores had. As such, this native shrub may have a key role in
oak regeneration in Mediterranean grazed areas. Furthermore, in these areas of contact between
marcescent and sclerophyllous Quercus species, Q. ilex currently emerges more than Q. pyrenaica. This
could be indicative of a shift towards more xeric climatic conditions, which could lead to a change in
the dominant tree species in the future. However, this change could be modulated by the effects of
native shrub and large herbivores.Junta de Castilla y León - (Project SA013G19)Universidad de Salamanca - (Programa de financiación de grupos de investigación (2014/00165/001)
The Effects of Native Shrub, Fencing, and Acorn Size on the Emergence of Contrasting Co-Occurring Oak in Mediterranean Grazed Areas
[ENG]Research Highlights: The regeneration of Quercus species is usually very difficult in many
oak woodlands transformed by livestock farming. Some studies have reported that shrubs can
facilitate regeneration. However, the strength of interaction may vary depending on, among other
factors, the shrub species and the stress tolerance of the oak species. Moreover, further studies are
necessary to clarify the relative importance of the two facilitation mechanisms in the same community.
Background and Objectives: Cytisus multiflorus (L’Her.) Sweet is a predominant shrub species in
the Mediterranean grazed open-oak-woodlands found in the central west of the Iberian Peninsula
(bioclimatic limit) and is present with Quercus pyrenaicaWilld and Quercus ilex subsp. ballota Samp
trees. Thus, we assessed the effect of these native shrubs and acorn size, and the effect of excluding
large herbivores, on the seedling emergence of two contrasting co-occurring Quercus species under
a bioclimatic limit. Materials and Methods: A manipulative field experiment was carried out
considering four treatments as a combination of shrubs (shrub/no-shrub) and fence (fenced/open)
factors. A total of twenty plots, five replicates for each treatment were available. In each plot,
20 acorns were sown: 10 acorns (5 small and 5 large) for each Quercus species. Acorn emergence was
recorded during the first four years following the sowing. Results: Seedling emergence took place
mostly in the spring of the first year after sowing. The presence of shrub was the main significant
factor and incremented the emergence of both Q. ilex and Q. pyrenaica. The effect of the fence
depended on the Quercus species considered, improving only the emergence of Q. pyrenaica. A
negative effect with the small acorns was detected but only for Q. pyrenaica. In all treatments, Q. ilex
emerged more than Q. pyrenaica. Conclusions: C. multiflorus had a clear facilitative effect on the
seedling emergence of Q. ilex and Q. pyrenaica, which was much greater than the physical effect that
acorn size and excluding large herbivores had. As such, this native shrub may have a key role in
oak regeneration in Mediterranean grazed areas. Furthermore, in these areas of contact between
marcescent and sclerophyllous Quercus species, Q. ilex currently emerges more than Q. pyrenaica. This
could be indicative of a shift towards more xeric climatic conditions, which could lead to a change in
the dominant tree species in the future. However, this change could be modulated by the effects of
native shrub and large herbivores
New Insight on Phenolic Composition and Evaluation of the Vitamin C and Nutritional Value of Smoothies Sold on the Spanish Market
Fruits and vegetables are a source of a wide range of nutrients, including bioactive compounds.
These compounds have great biological activity and have been linked to the prevention of
chronic non-communicable diseases. Currently, the food industry is developing new products to
introduce these compounds, whereby smoothies are becoming more popular among consumers. The
aim of this study was to evaluate the nutritional quality and the polyphenol and vitamin C content
of smoothies available on the Spanish market. An evaluation of the nutritional information and
ingredients was carried out. The phenolic compounds were determined by HPLC-ESI-TOF-MS; the
vitamin C content was quantified using HPLC-UV/VIS; and the antioxidant activity was analyzed by
DPPH and FRAP. Among all of the ingredients of the smoothies, coconut and banana have shown a
negative impact on the polyphenol content of the smoothies. In contrast, ingredients such as orange,
mango, and passion fruit had a positive correlation with the vitamin C content. Moreover, apple and
red fruits showed the highest positive correlations with most of the phenolic acids, flavonoids, total
phenolic compounds, and antioxidant activities. In addition, a clustering analysis was performed,
and four groups were clearly defined according to the bioactive composition determined here. This
research is a precious step for the formulation of new smoothies and to increase their polyphenol
quality.SHEALTHY project from the European Union's Horizon 2020 research and innovation program 81793
QoS in wireless sensor networks: survey and approach
A wireless sensor network (WSN) is a computer wireless network composed of spatially distributed and autonomous tiny nodes -- smart dust sensors, motes -, which cooperatively monitor physical or environmental conditions. Nowadays these kinds of networks support a wide range of applications, such as target tracking, security, environmental control, habitat monitoring, source detection, source localization, vehicular and traffic monitoring, health monitoring, building and industrial monitoring, etc. Many of these applications have strong requirements for end-to-end delay and losses during data transmissions. In this work we have classified the main mechanisms that have been proposed to provide Quality of Service (QoS) in WSN at Medium Access Control (MAC) and network layers. Finally, taking into account some particularities of the studied MAC- and network-layer protocols, we have selected a real application scenario in order to show how to choose an appropriate approach for guaranteeing performance in a WSN deployed application
Mathematical modelling of drying kinetics of avocado peels and its influence on flavan-3-ols content and antioxidant activity
This study was supported by project RTI2018-099835-A-I00
financed by MCIN/AEI/10.13039/501100011033/FEDER “Una manera
de hacer Europa”, and by the project Proyectos I + D + i del Programa
Operativo FEDER 2020 cod. B-AGR-506-UGR20.Funding for open access
charge: Universidad de Granada / CBUAAvocado peel is one of the main by-products of avocado processing and is considered a promising source of
phenolic compounds with various bioactivities. The drying step is essential for its storage at the industrial level,
and it is the first step in the strategy of transforming by-products into functional ingredients. Therefore, this
research evaluates the effect of the convective air-drying of avocado peels at three different temperatures (40, 60
and 80 ◦C) and airflows (0, 0.8 and 1.6 m/s) on the flavan-3-ols content and antioxidant activity. Moreover, the
mathematical modelling of its drying kinetic was developed. A decrease in the flavan-3-ol and antioxidant
content was found with increasing temperatures. However, a high impact of the airflow reducing the drying time
and limiting the decrease in interesting compounds was found. Among the tested mathematical models, the Page
model reported the highest values of R2 (from 0.9907 to 0.9973) and the lowest errors for most of the tem-
peratures and airflows tested. However, at 80 ◦C with airflow, the Lewis model seemed to fit better (R2 =
0.9982). Finally, the drying conditions that showed the lowest decrease in procyanidin and antioxidants were
40 ◦C and an airflow of 1.6 m/s for 105 min.MCIN/AEI/FEDER "Una manera de hacer Europa"
RTI2018-099835-A-I00Project Proyectos I + D + i del Programa Operativo FEDER 2020
B-AGR-506-UGR2
New Advances in the Phenolic Composition of Tiger Nut (Cyperus esculentus L.) By-Products
Acknowledgments: Vito Verardo thanks the Spanish Ministry of Economy and Competitiveness
(MINECO) for “Ramon y Cajal” contract (RYC-2015-18795). The authors would like to thank the
Puleva company for providing “horchata” by-products.“Horchata” is a well-known Spanish beverage obtained from pressing tiger nuts. Its
by-product is a potential source of sugar and fiber but also contains polyphenols; thus, it could be
used as a new ingredient in the food industry. The aim of this work is to determine the phenolic
compounds and compare the phenolic profile of two tiger nut by-products. A Box–Behnken design
has been carried out to optimize the extraction of phenolic compounds from tiger nut by-products
by ultrasound technology. The independent factors were time (min), ethanol/water (% v/v), and
solvent/sample ratio (v/w). The model was validated and confirmed by ANOVA. A Protected
Designation of Origin (PDO) of Valencia and a non-Protected Designation of Origin (n-PDO) tiger
nut by-products were extracted under the optimal conditions and were characterized by HPLC-DADESI-
TOF-MS (High Performance Liquid Chropatography coupled to a photodiode array time-offlight
mass detector). Moreover, their antioxidant activities measured by three different methods
(DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,20-Azinobis [3-ethylbenzothiazoline-6-sulfonic acid]-
diammonium salt) and FRAP (ferric reducing antioxidant power)) were compared. A total of 45 polar
compounds were identified, and the phenolic ones were quantified, some of them for the first
time. PDO tiger nut by-product has been demonstrated to be richer in phenolic acids and other
polyphenols and has higher antioxidant activity; meanwhile, n-PDO tiger nut by-product is richer in
phenol precursors
Response Surface Methodology for the Optimization of Flavan-3-ols Extraction from Avocado By-Products via Sonotrode Ultrasound-Assisted Extraction
Avocado peel and seed are the main by-products of avocado processing and are considered
as promising sources of phenolic compounds with biological activities. Thus, this research
focuses on the establishment, for the first time, of ultrasound-assisted extraction of flavan-3-ols with
high antioxidant activity from avocado peel and seed using a sonotrode. Indeed, 2 Box–Behnken
designs were performed for 15 experiments, with each design having three independent factors (ratio
ethanol/water (v/v), time (min) and amplitude (%)). In both models, the responses included total
procyanidins (flavan-3-ols) measured via HPLC-FLD and antioxidant activity measured via DPPH,
ABTS and FRAP. The results showed that applying the sonotrode extraction method could increase
flavan-3-ols recovery by 54% and antioxidant activity by 62–76% compared to ultrasound bath technology.
Therefore, this technology was demonstrated to be a non-thermal, low time-consuming and
scalable method that allowed the recovery of flavan-3-ols from avocado by-products that could be
used as functional ingredientsSHEALTHY project, which receives funding from the
European Union’s Horizon 2020 research and innovation program under grant number 817936The
project RTI2018-099835-A-I00 financed by MCIN/AEI/10.13039/501100011033/FEDER “Una manera
Antioxidants 2023, 12, 1409 12 of 13
de hacer Europa”Project Proyectos I + D + i del Programa Operativo FEDER 2020 cod.
B-AGR-506-UGR2
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