50 research outputs found
Diseño de una nariz electrónica para el control de calidad de frutas y alimentos
[ES] El presente Trabajo de Fin de Grado titulado ¿Diseño de una nariz electrónica para el
control de calidad de frutas y alimentos¿ tiene como meta la creación de un sistema para
la detección de aromas emitidos por frutas y alimentos.
El sistema está formado por una matriz de sensores de gas MQ junto con un sensor de
humedad y temperatura DHT11. Está matriz está alimentada por una fuente de
alimentación Mean Well de 5 V y se conecta a un microcontrolador Arduino que se
encargará de enviar los datos al ordenador para su posterior tratamiento en Excel donde
se podrán ver las concentraciones de los distintos gases a detectar.[EN] The following final undergraduate project called ¿Diseño de una nariz electronica para
el control de calidad de frutas y alimentos¿ has as an objective the design of a system
that will be able to detect the smell emitted by fruits and food in general.
The system is formed by a MQ gas sensor matrix and a temperature and humidity sensor
DHT11. This matrix is powered by a Mean Well 5 V power system and connected to an
Arduino microcontroller which will send the data to the computer where it will be
treated by Microsoft Excel.[CA] El present Treball de Fi de Grau titulat “Disseny d'un nas electrònic per al control de
qualitat de fruites i aliments” té com a meta la creació d'un sistema per a la detecció
d'aromes emeses per fruites i aliments.
El sistema està format per una matriu de sensors de gas MQ juntament amb un sensor
d'humitat i temperatura DHT11. Està matriu està alimentada per una font d'alimentació
Mean Well de 5 V i es connecta a un microcontrolador Arduino que s'encarregarà
d'enviar les dades a l'ordinador per al seu posterior tractament en Excel on es podran
veure les concentracions dels diferents gasos a detectar.Peñarrubia Gil, JL. (2020). Diseño de una nariz electrónica para el control de calidad de frutas y alimentos. Universitat Politècnica de València. http://hdl.handle.net/10251/152761TFG
Posibilidades de trabajo con realidad aumentada en educación física
La Realidad Aumentada, RA, permite a los individuos tener una interacción entre un mundo real y uno virtual que lo complementa. Aunque es una tecnología actual y en crecimiento, resulta en gran parte desconocida dentro del mundo educativo. Este Trabajo Fin de Grado tiene como objetivo conocer el grado de desarrollo y aplicabilidad de la RA, en la Educación Física, EF. Se pretende explicar las posibilidades que puede ofrecernos la RA en esta asignatura en la etapa de Educación Primaria. Para ello, se ha realizado la revisión de los documentos publicados desde 2012 al 2018 inclusive, con experiencias en contextos educativos de diferentes niveles (Primaria, Secundaria, Bachillerato, Formación Profesional y Universidad). Del mismo modo, las limitaciones que pueden producirse en los contextos educativos actuales en el momento de utilizar este tipo de tecnología. Se han seleccionado y analizado 13 obras de relevancia relacionadas con el objetivo principal de conocer el estado actual de la RA en el ámbito educativo para tratar de sentar las bases de cara a futuras propuestas de trabajo con esta metodología
Validated methodology for quantifying infestation levels of dreissenid mussels in environmental DNA (eDNA) samples
The zebra mussel (Dreissena polymorpha Pallas, 1771) and the quagga mussel (D. rostriformis Deshayes, 1838) are successful invasive bivalves with substantial ecological and economic impacts in freshwater systems once they become established. Since their eradication is extremely difficult, their detection at an early stage is crucial to prevent spread. In this study, we optimized and validated a qPCR detection method based on the histone H2B gene to quantify combined infestation levels of zebra and quagga mussels in environmental DNA samples. Our results show specific dreissenid DNA present in filtered water samples for which microscopic diagnostic identification for larvae failed. Monitoring a large number of locations for invasive dreissenid species based on a highly specific environmental DNA qPCR assay may prove to be an essential tool for management and control plans focused on prevention of establishment of dreissenid mussels in new locations.info:eu-repo/semantics/publishedVersio
Effects of Ultratrail Running on neuromuscular function, muscle damage and hydration status. Differences according to training level
The status of trail running races has exponentially grown in recent years. The present study aimed to: (a) evaluate the acute response of ultratrail racing in terms of neuromuscular function, muscle damage and hydration status; (b) analyze if responses could differ according to training levels. Twenty runners participated in the present study. The participants were divided into amateur training level (n = 10; 43.30 ± 4.52 years) or high level competitors (n = 10; 41.40 ± 6.18). Neuromuscular response (squat jump, countermovement jump and Abalakov jump), muscle damage (alanine aminotransferase, bilirubin, creatine kinase and leukocytes) and hydration status (sodium and creatinine) were evaluated before and after the Guara Somontano Ultratrail Race (108 km distance, with an accumulated slope of 5800 m). The height and power achieved by vertical jumps were lower after the race (p < 0.001). The post-race muscle damage and creatinine parameters increased in both groups (p < 0.001). The high-level group obtained lower percentages of change in squat jump and countermovement jump than the amateur-level group (p < 0.05). However, the increase in creatinine was greater for the high-level group (p < 0.05). Ultratrail racing reduces neuromuscular function and increases muscle damage. High-level runners showed less neuromuscular fatigue compared to amateur ones
Impacto de una intervención didáctica basada en el uso de un exergame en la activación del área motora suplementaria durante procesos de coordinación motora: un estudio piloto en primaria
Our study investigated the effect of an exergaming didactic intervention in Physical Education (PE) on brain functioning associated with motor coordination. Five students formed the control group (received traditional didactic intervention) and four made up the experimental group (received exergaming didactic intervention). Functional near-infrared spectroscopy (fNIRS) measures were acquired at two time points (before and after intervention) by a 64-channel NIRScout system covering the supplementary motor area (SMA) while performing a bimanual digital flexion-extension coordination task. The results showed a more efficient activity pattern for the group that performed the gamified exergaming intervention than for the control group (traditional didactic intervention). In conclusion, our study reports neurofunctional evidence for effects of exergames on motor coordination.Este estudio busca analizar el efecto de una intervención educativa, basada en el uso de un exergame, sobre la actividad cerebral relacionada con procesos de coordinación motora. Cinco alumnos formaron parte del grupo control (fueron los que recibieron la intervención didáctica tradicional) y cuatro alumnos formaron parte del grupo experimental (recibieron la intervención educativa basada en el uso del exergame). Las medidas de espectroscopía funcional de infrarrojo cercano (fNIRS) se recogieron en dos momentos diferenciados (antes –medida PRE– y después –medida POST– de la intervención) con un sistema NIRScout de 64 canales, cubriendo el área motora suplementaria (SMA) durante la realización de una tarea de coordinación bimanual de flexión-extensión digital. Los resultados mostraron que parece existir un patrón de actividad más eficiente en el grupo que realizó la intervención de exergaming gamificada en comparación con el grupo que realizó la intervención didáctica tradicional. En conclusión, nuestro estudio muestra evidencia neurofuncional sobre los efectos de los exergames en la coordinación motora
Polymorphisms in receptors involved in opsonic and nonopsonic phagocytosis, and correlation with risk of infection in oncohematology patients
Producción CientíficaHigh-risk hematological malignancies are a privileged setting for infection by opportunistic microbes, with invasive mycosis being one of the most serious complications. Recently, genetic background has emerged as an unanticipated risk factor. For this reason, polymorphisms for genes encoding archetypal receptors involved in the opsonic and nonopsonic clearance of microbes, pentraxin-3 (PTX3) and
Dectin-1, respectively, were studied and correlated with the risk of infection. Fungal, bacterial, and viral infections were registered for a group of 198 patients with highrisk hematological malignancies. Polymorphisms for the pentraxin-3 gene (PTX3) showed a significant association with the risk of fungal infection by Candida spp. and, especially, by Aspergillus spp. This link remained even for patients undergoing antifungal prophylaxis, thus demonstrating the clinical relevance of PTX3 in the defense against fungi. CLEC7A polymorphisms did not show any definite correlation with the risk of invasive
mycosis, nor did they influence the expression of Dectin-1 isoforms generated by alternative splicing. The PTX3 mRNA expression level was significantly lower in samples from healthy volunteers who showed these polymorphisms, although no differences were observed in the extents of induction elicited by bacterial lipopolysaccharide and heat-killed Candida albicans, thus suggesting that the expression of
PTX3 at the start of infection may influence the clinical outcome. PTX3 mRNA expression can be a good biomarker to establish proper antifungal prophylaxis in immunodepressed patients
Results of an early access treatment protocol of daratumumab monotherapy in spanish patients with relapsed or refractory multiple myeloma
Daratumumab is a human CD38-targeted monoclonal antibody approved as monotherapy for heavily pretreated relapsed and
refractory multiple myeloma. We report findings for the Spanish cohort of an open-label treatment protocol that provided early access
to daratumumab monotherapy and collected safety and patient-reported outcomes data for patients with relapsed or refractory
multiple myeloma. At 15 centers across Spain, intravenous daratumumab (16mg/kg) was administered to 73 patients who had ≥3
prior lines of therapy, including a proteasome inhibitor and an immunomodulatory drug, or who were double refractory to both. The
median duration of daratumumab treatment was 3.3 (range: 0.03–13.17) months, with a median number of 12 (range: 1–25)
infusions. Grade 3/4 treatment-emergent adverse events were reported in 74% of patients and included lymphopenia (28.8%),
thrombocytopenia (27.4%), neutropenia (21.9%), leukopenia (19.2%), and anemia (15.1%). Common (>5%) serious treatmentemergent adverse events included respiratory tract infection (9.6%), general physical health deterioration (6.8%), and back pain
(5.5%). Infusion-related reactions occurred in 45% of patients. The median change from baseline in all domains of the EQ-5D-5L and
EORTC QLQ-C30 was mostly 0. A total of 18 (24.7%) patients achieved a partial response or better, with 10 (13.7%) patients
achieving a very good partial response or better. Median progression-free survival was 3.98 months. The results of this early access
treatment protocol are consistent with previously reported trials of daratumumab monotherapy and confirm its safety and antitumoral
efficacy in Spanish patients with heavily treated relapsed or refractory multiple myeloma
Use of eltrombopag for patients 65 years old or older with immune thrombocytopenia
Background
Eltrombopag is useful for immune thrombocytopenia (ITP). However, results of clinical trials may not accurately mirror clinical practice reality. Here we evaluated eltrombopag for primary and secondary ITP in our ≥65‐year‐old population.
Methods
A total of 106 primary ITP patients (16 with newly diagnosed ITP, 16 with persistent ITP, and 74 with chronic ITP) and 39 secondary ITP patients (20 with ITP secondary to immune disorders, 7 with ITP secondary to infectious diseases, and 12 with ITP secondary to lymphoproliferative disorders [LPD]) were retrospectively evaluated.
Results
Median age of our cohort was 76 (interquartile range, IQR, 70‐81) years. 75.9% of patients yielded a platelet response including 66.2% complete responders. Median time to platelet response was 14 (IQR, 8‐21) days. Median time on response was 320 (IQR, 147‐526) days. Sixty‐three adverse events (AEs), mainly grade 1‐2, occurred. The most common were hepatobiliary laboratory abnormalities (HBLAs) and headaches. One transient ischemic attack in a newly diagnosed ITP and two self‐limited pulmonary embolisms in secondary ITP were the only thrombotic events observed.
Conclusion
Eltrombopag showed efficacy and safety in ITP patients aged ≥65 years with primary and secondary ITP. However, efficacy results in LPD‐ITP were poor. A relatively high number of deaths were observed
Response of the photosynthetic apparatus to a flowering-inductive period by water stress in Citrus
The photosynthetic responses to a flowering-inductive water-stress period and recovery were studied and compared in two Citrus species. Under greenhouse conditions, Fino lemon and Owari satsuma trees were subjected to moderate (-2 MPa at predawn) and severe (-3 MPa) water stress levels and were re-watered after 60 days. Vegetative growth was inhibited during the stress assays, and strong defoliation levels were reported, especially in Fino lemon. In both species, bud sprouting was induced after re-watering. Flowers and vegetative shoots developed in Owari satsuma after a drought period, and the development was independent of the stress level. In Fino lemon, vegetative shoots and flowers were primarily formed after moderate and severe stress, respectively. The photosynthetic rate and stomatal conductance were reduced by water stress, and a marked increase in water-use efficiency at the moderate water deficit level was observed. Nevertheless, the photosynthetic apparatus was not damaged, since the maximum quantum yield, photosynthetic pigment concentrations and Rubisco level and activity did not change. Furthermore, the measured malonyldialdehyde (MDA) and peroxidase activity indicated that oxidative stress was not specifically triggered by water stress in our study. Therefore, the gas exchange, fluorescence and biochemical parameters suggested that diffusional limitations to photosynthesis predominated in both of the studied Citrus species, and explained the rapid recovery of the photosynthetic parameters after rehydration. The net CO 2 fixation rate and stomatal conductance were recovered within 24 h in Fino lemon, whereas 3 days were required in Owari satsuma. This suggests the presence of some metabolic limitations in the latter species. Furthermore, the sensibility of the defoliation rates, the accumulation of proline and the stomatal behaviour in response to water stress indicated a higher drought tolerance of Fino lemon, according to its better acclimation to hot climates. © 2011 Springer-Verlag.The authors thank Dr. J. Moreno and co-workers from the Departamento de Bioquimica of the Universidad de Valencia for his help and support in the Rubisco assays, and Dr. F. Fornes, Dr. A. Calatayud and Dr. E. Primo-Millo for the critical review of the manuscript. This work was funded by the Universitat Politecnica de Valencia, Spain (Ayudas para primeros proyectos de investigacion PAID06-06).Ávila Reséndiz, C.; Guardiola Barcena, JL.; González Nebauer, S. (2012). Response of the photosynthetic apparatus to a flowering-inductive period by water stress in Citrus. Trees - Structure and Function. 26(3):833-840. https://doi.org/10.1007/s00468-011-0657-4S833840263Addicott FT (1982) Abscission. 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Unbiased constraints on ultralight axion mass from dwarf spheroidal galaxies
It has been suggested that the internal dynamics of dwarf spheroidal galaxies
(dSphs) can be used to test whether or not ultralight axions with are a preferred dark matter candidate. However, comparisons
to theoretical predictions tend to be inconclusive for the simple reason that
while most cosmological models consider only dark matter, one observes only
baryons. Here we use realistic kinematic mock data catalogs of Milky Way dSph's
to show that the "mass-anisotropy degeneracy" in the Jeans equations leads to
biased bounds on the axion mass in galaxies with unknown dark matter halo
profiles. In galaxies with multiple chemodynamical components this bias can be
partly removed by modelling the mass enclosed within each subpopulation.
However, analysis of the mock data reveals that the least-biased constraints on
the axion mass result from fitting the luminosity-averaged velocity dispersion
of the individual chemodynamical components directly. Applying our analysis to
two dSph's with reported stellar subcomponents, Fornax and Sculptor, and
assuming that the halo profile has not been acted on by baryons, yields core
radii kpc and kpc respectively, and at 97.5\% confidence. These bounds are in tension with the
number of observed satellites derived from simple (but conservative) estimates
of the subhalo mass function in Milky Way-like galaxies. We discuss how
baryonic feedback might affect our results, and the impact of such a small
axion mass on the growth of structures in the Universe.Comment: 17 pages, 12 figures. Version to match MNRAS. Analysis extended to
anisotropic mocks. Main conclusions unchange