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Implantación e industrialización de una nueva célula de fabricación de retenedores
No full textCuando un proyecto nuevo llega a la planta, son muchas las tareas a realizar para conseguir su implementación y su estandarización según las normas de Edscha.
A su vez, cuando un cliente solicita un aumento en la capacidad de producción se
generan nuevas acciones a realizar para conseguir mejorar el proceso productivo y
alcanzar la producción solicitada.
En este caso, el presente trabajo trata del desarrollo de todo el proceso de
implementación de nuevas máquinas y operaciones para mejorar la producción de un producto ya implementado en la fábrica.
Para conseguir esta mejora nos basaremos en estudios de métodos y tiempos, desarrollando un trabajo de mejora continua con herramientas como SAP, Captor, TiCon (Estudios MTM), PowerBI, APIS y softwares de diseño 2D y 3D.
Cuando las mejoras estén implementadas se verán reflejadas en una disminución del
tiempo productivo, una mejora en ergonomía en los operarios de la planta y un aumento de la productividad.
Para desarrollar este proyecto me han ayudado varios departamentos de la empresa a los que se hará mención durante el desarrollo del proyecto
Actividad electrodérmica y variación en la atención fásica durante la exploración háptica de bifaces y cantos tallados del Paleolítico inferior
No full textLa arqueología cognitiva intenta acceder a los procesos mentales de aquellos individuos extintos a través de
su cultura material. Las herramientas líticas representan la mayor parte de esta cultura material para el Paleolítico inferior. La complejidad humana está fuertemente ligada a su inteligencia y esta, a su vez, al sistema
atencional. Este trabajo se basa en el análisis de la atención fásica en 46 individuos adultos, durante la manipulación de 21 herramientas líticas diferentes, hasta alcanzar una posición confortable. Para esto se realizó el
conteo de picos de respuesta electrodermal durante el tiempo total de la exploración háptica para cada sesión
y se compararon resultados por tipología lítica. Se observó una respuesta diferencial para las herramientas de
tipo achelense cuya causa estaría vinculada a la mayor complejidad técnica de esta tipología.Cognitive archaeology seeks to access the mental processes of extinct individuals through their material culture. Lithic tools represent the majority of this material culture for the Lower Paleolithic. Human complexity
is strongly linked to intelligence, which in turn is connected to the attentional system. This study is based on
the analysis of phasic attention in 46 adult individuals during the manipulation of 21 different lithic tools until
reaching a comfortable position. To do this, the counting of peaks of electrodermal response was carried out
during the total time of haptic exploration for each session, and the results were compared by lithic typology.
A differential response was observed for Acheulean-type tools which is likely due to the greater technical
complexity of this typology
Utility of Ultrasonic Pulse Velocity for Estimating the Overall Mechanical Behavior of Recycled Aggregate Self-Compacting Concrete
Get PDFUltrasonic pulse velocity (UPV) is a non-destructive measurement technique with which
the quality of any concrete element can be evaluated. It provides information on concrete health
and for assessing the need for repair in a straightforward manner. In this paper, the relationship
is studied between UPV readings and the mechanical behavior of self-compacting concrete (SCC)
containing coarse, fine, and/or powdery RA. To do so, correlations and simple- and multipleregression relationships between compressive strength, modulus of elasticity, splitting tensile strength,
flexural strength, and UPV readings of nine SCC mixes were assessed. The correlations showed that
the relationship of UPV with any mechanical property was fundamentally monotonic. The inverse
square-root model was therefore the best-fitting simple-regression model for all the mechanical
properties, although for bending-tensile-behavior-related properties (splitting tensile strength and
flexural strength) the estimation accuracy was much lower than for compressive-behavior-related
properties (compressive strength and modulus of elasticity). Linear-combination multiple-regression
models showed that the properties related to bending-tensile behavior had a minimal influence on
the UPV value, and that their introduction resulted in a decreased estimation accuracy. Thus, the
multiple-regression models with the best fits were those that linked the compressive-behavior-related
properties to the UPV readings. This therefore enables the estimation of the modulus of elasticity
when the UPV and compressive strength are known with a deviation of less than ±20% in 87% of the
SCC mixes reported in other studies available in the literature.This research was funded by the Spanish Ministry of Universities, MICIN, AEI, EU, ERDF, and NextGenerationEU/PRTR, grant numbers PID2020-113837RB-I00, 10.13039/501100011033, and TED2021-129715B-I00; the Junta de Castilla y León (Regional Government) and ERDF, grant number UIC-231; and the University of Burgos, grant numbers SUCONS, Y135.GI
Modeling Horizontal Ultraviolet Irradiance for All Sky Conditions by Using Artificial Neural Networks and Regression Models
Get PDFIn the present study, different models constructed with meteorological variables are proposed for the determination of horizontal ultraviolet irradiance (IUV), on the basis of data collected
at Burgos (Spain) during an experimental campaign between March 2020 and May 2022. The aim
is to explore the effectiveness of a range of variables for modelling horizontal ultraviolet irradiance
through a comparison of supervised artificial neural network (ANN) and regression model results.
A preliminary feature selection process using the Pearson correlation coefficient was sufficient to
determine the variables for use in the models. The following variables and their influence on horizontal ultraviolet irradiance were analyzed: horizontal global irradiance (IGH), clearness index (kt),
solar altitude angle (α), horizontal beam irradiance (IBH), diffuse fraction (D), temperature (T), sky
clearness (ε), cloud cover (Cc), horizontal diffuse irradiance (IDH), and sky brightness (∆). The ANN
models yielded results of greater accuracy than the regression models.This research is a result of the project RTI2018-098900-B-I00 financed by the Spanish Ministry of Science and Innovation, project TED2021-131563B-I00 financed by MCIN/AEI/10.13039/501100011033 and the European Union “NextGenerationEU”/PRTR», and Junta de Castilla y León, under grant number INVESTUN/19/BU/0004
Thiosemicarbazonecopper/Halido Systems: Structure and DFT Analysis of the Magnetic Coupling
Get PDFExperimental magnetic studies performed on the [{CuLX}2
] system (HL = pyridine-2-
carbaldehyde thiosemicarbazone, X = Cl−, Br−, I−) point to the larger electronegativity in X, the lower
magnitude of the antiferromagnetic interactions. In order to confirm this and other trends observed
and to dip into them, computational studies on the [{CuLX}2
] (X = Cl− (1), I− (2)) compounds are here
reported. The chemical and structural comparisons have been extended to the compounds obtained in
acid medium. In this regard, chlorido ligands yield the [Cu(HL)Cl2
]·H2O (3) complex, whose crystal
structure shows that thiosemicarbazone links as a tridentate chelate ligand to square pyramidal Cu(II)
ions. On the other hand, iodido ligands provoke the formation of the [{Cu(H2L)I2
}2
] (4) derivative,
which contains pyridine-protonated cationic H2L
+ as a S-donor monodentate ligand bonded to
Cu(I) ions. Crystallographic, infrared and electron paramagnetic resonance spectroscopic results are
discussed. Computational calculations predict a greater stability for the chlorido species, containing
both the neutral (HL) and anionic (L−) ligand. The theoretical magnetic studies considering isolated
dimeric entities reproduce the sign and magnitude of the antiferromagnetism in 1, but no good
agreement is found for compound 2. The sensitivity to the basis set and the presence of interdimer
magnetic interactions are debated.This research was funded by the European Union H2020-LC-SC3-2020-NZE-RES-CC, NMBP-16-2020-GA 953152 and DT-NMBP-04-2020 Projects, together with the Ministerio de Ciencia, Innovación y Universidades CTQ(QMC) RED2018-102471-T MultiMetDrugs Network (Spain), PGC2018-093745-B-I00 and PID2019-111215RB-100, Consejería de Educación of Junta de Castilla y León and FEDER BU049P20 and FUNDACION BANCARIA CAIXA D. ESTALVIS I PENSIONS DE BARCELONA 001. Ministerio de Ciencia e Innovación PID2019-106644GB-I00 and Gobierno Vasco IT1458-22
The term “nephew” consideration at the end of the 16th century: the succession conflict between the descendants of D. Diego de Salamanca Polanco and Fr. Diego de Salamanca, bishop of San Juan in Puerto Rico
Get PDFPonencia presenta en: I Congreso Internacional de Jóvenes Genealogistas, organizado por la Real Asociación de Hidalgos de España, con la colaboración de la Confédération Internationale de Généalogie et d’Héraldique (CIGH); la Académie Internationale de Généalogie (AIG); el Instituto Internacional de Genealogía y Heráldica (IIGH) y el Institut Internacional d’Études Généalogiques et d’Histoire des Familles, Madrid, 17-18 de febrero de 2023.Este estudio tiene como objetivo principal concretar el ámbito familiar que se
referenciaba en la Edad Moderna con el término “sobrino”, exportable a otros vocablos
genealógicos. Para dicho análisis se emplea el pleito por la sucesión de los bienes de dos
individuos homónimos, Diego de Salamanca Polanco y fr. Diego de Salamanca, obispo de San
Juan en Puerto Rico, parientes entre sí.The main objetive of this study is to specify the family enviroment that was
referenced in the Modern Age with the term “nephew”, exportable to other genealogical words.
For this analysis is used the lawsuit for the succession of the assets of two homonymous
infividuals, Diego de Salamanca Polanco and fr. Diego de Salamanca, bishop of San Juan en
Puerto Rico, relatives to each other
Bacteriophages as Biotechnological Tools
Get PDFBacteriophages are ubiquitous organisms that can be specific to one or multiple strains
of hosts, in addition to being the most abundant entities on the planet. It is estimated that they
exceed ten times the total number of bacteria. They are classified as temperate, which means that
phages can integrate their genome into the host genome, originating a prophage that replicates
with the host cell and may confer immunity against infection by the same type of phage; and lytics,
those with greater biotechnological interest and are viruses that lyse the host cell at the end of its
reproductive cycle. When lysogenic, they are capable of disseminating bacterial antibiotic resistance
genes through horizontal gene transfer. When professionally lytic—that is, obligately lytic and not
recently descended from a temperate ancestor—they become allies in bacterial control in ecological
imbalance scenarios; these viruses have a biofilm-reducing capacity. Phage therapy has also been
advocated by the scientific community, given the uniqueness of issues related to the control of
microorganisms and biofilm production when compared to other commonly used techniques. The
advantages of using bacteriophages appear as a viable and promising alternative. This review will
provide updates on the landscape of phage applications for the biocontrol of pathogens in industrial
settings and healthcare.This study was funded by CNPQ and the Federal University of Santa Catarina, SIGPEX UFSC–201917940
Psychometric Analysis of an Academic Self-Attribution Questionnaire in Middle and High School Students in Italy: Implications of Gender and Age
Get PDFThis research aimed to validate the Academic Success and Failure Attribution Questionnaire
(ASFAQ) and analyze gender and age differences in middle and high school students in Italy. Methods:
From the ASFAQ questionnaire validated with Spanish students, an analysis of the psychometric
characteristics of the scale was carried out using a Confirmatory Factor Analysis (CFA). To compare
ASFAQ scores by gender and school year, the independent samples parametric t-test and Pearson’s
coincidence test were used. (3) Results: in total, 976 students participated in the research, of which
515 were middle school students and 461 were high school students. The results showed a validity of
the ASFAQ for Italian students, in addition to statistically significant differences between males and
females, and school year. (4) Conclusions: The ASFAQ is reliable and valid to assess the attributional
styles of academic success and failure in an Italian context. There are significant differences in sex
and school year, and a consequence with age
Terapia ocupacional en la enfermedad de Alzheimer
Get PDFDocumento con distintas estrategias de intervención en personas con Enfermedad de Alzheimer, se especifica en dicho documento una pequeña introducción, los objetivos de la intervención, un esquema de tratamiento a nivel físico y a nivel cognitivo y por último distintas terapias no farmacológicas de intervención en la patología