Measuring the nearshore bathymetry is critical in coastal management and morphodynamic studies. T... more Measuring the nearshore bathymetry is critical in coastal management and morphodynamic studies. The recent advent of Unmanned Aerial Vehicles (UAVs), in combination with coastal video monitoring techniques, allows for an alternative and low cost evaluation of the nearshore bathymetry. Camera calibration and stabilization is a critical issue in bathymetry estimation from video systems. This work introduces a new methodology in order to obtain such bathymetries, and it compares the results to echo-sounder ground truth data. The goal is to gain a better understanding on the influence of the camera calibration and stabilization on the inferred bathymetry. The results show how the proposed methodology allows for accurate evaluations of the bathymetry, with overall root mean square errors in the order of 40 cm. It is shown that the intrinsic calibration of the camera, related to the lens distortion, is the most critical aspect. Here, the intrinsic calibration that was obtained directly du...
Abajo: se repite los tres en el resumen. This work studies the effect of high-level fish meal rep... more Abajo: se repite los tres en el resumen. This work studies the effect of high-level fish meal replacement with insect meal: YW meal (obtained from Tenebrio larvae fed a broiler diet), BSF meal (from hermetia larvae fed broilers diet), BSFm meal (obtained from hermetia larvae fed discard fish) on growth performance nutritive indices and in vitro digestibility of Dicentrarchus labrax juvenile. Three different insect meals were used: BSF meal from hermetia larvae fed broilers diet; BSF improve (BSFm) obtained from hermetia larvae fed discarded fish; YW meal obtained from the larvae of Tenebrio fed a broiler diet. Five diets were used, a control (C) diet and four experimental diets by replacing fishmeal with insect meal from BSF at 30% and 50% (BSF30 and BSF50) substitutions, BSFm at 50% substitution (BSF50 m) and YM at 50% substitution (YW50). Nutritional and growth indices worsened by including insect meal, especially for hermetia meal at 50% substitution, BSF50 and BSF50 m. The inter...
In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of th... more In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of the medium frequency electrical resistance sintering (MF-ERS) technique were studied to prevent WC grain growth during consolidation. Porosity and hardness were measured at different zones of the MF-ERS compacts. The compacts showed a slight inhomogeneity in their properties across their section, but it was controlled by choosing suitable values of the processing parameters. The optimal values for the material studied were current intensities between 7 and 8 kA and sintering times between 600 and 800 ms. The main achievement using this consolidation method was that sintered compacts essentially maintained the initial WC grain size. This was attained to processing times of less than 2 s, and without the need for using protective atmospheres.
El objetivo del trabajo es identificar las áreas de estudio y los factores que toman en cuenta lo... more El objetivo del trabajo es identificar las áreas de estudio y los factores que toman en cuenta los infantes al registrar sus aspiraciones de carrera u ocupación. La investigación se fundamenta en las teorías contextuales y evolutivas del ciclo de vida de las personas e integra las profesiones tradicionales por género; además implementa un proyecto de investigación-acción en grupos de nivel primaria de dos escuelas de Tepatitlán, Jalisco (México). Los resultados develan que los campos del saber continúan eligiéndose de acuerdo con el género y que los más frecuentes son: ciencias de la salud, biotecnología y ciencias agrícolas, humanidades e ingenierías. Los factores de interacción con mayores registros son de nivel macro-medio y micro (entorno inmediato y próximo), donde se encuentran la familia y la escuela. La infancia es un periodo de logros vocacionales; los programas de orientación vocacional en educación básica ampliarían el panorama informativo y generarían condiciones favorab...
Cemented carbide is a hard composite material, used widely in a variety of industries. The value ... more Cemented carbide is a hard composite material, used widely in a variety of industries. The value of the global tungsten carbide market is expected to grow by 4.4% (compound annual growth rate) from 2017 to 2022. One of the main markets is in metal cutting and wear parts, where small pieces (or inserts), a few grams in weight, are used. Field-assisted sintering technique (FAST) technologies allow for the production of small blanks in a single step from powder, which are near final dimensions. Production cycles are very short. In this paper, one of the FAST processes, the ERS technology, is applied to obtain WC10Co parts. A review of the process variable effects on the final properties of the parts is accomplished. Final properties of a range of conventionally produced inserts are obtained, using 100 MPa compacting pressure, 80 MA/m2 of current density, and processing times of around 800 ms.
El presente estudio se planteó como objetivos identificar el nivel predictivo que tienen las dime... more El presente estudio se planteó como objetivos identificar el nivel predictivo que tienen las dimensiones de la personalidad sobre la imagen corporal (IC) y sus posibles relaciones, así como comparar dichas variables conforme al sexo de los participantes. La población de estudio fueron alumnos de tres carreras técnicas de una institución de educación pública del estado de Jalisco, México. La muestra estuvo compuesta por 567 alumnos. El instrumento para medir la imagen corporal fue el Cuestionario de Insatisfacción con la Imagen Corporal (Body Shape Questionnaire) y para evaluar la Personalidad, el Inventario de Personalidad NEO Revisado NEO FFI (versión reducida del NEO PI-R). En materia de resultados y mediante un análisis de regresión lineal múltiple se identificaron como variables predictoras de la imagen corporal —insafisfecha— la dimensión de la personalidad denominada neuroticismo y el sexo femenino; además, se encontraron relaciones significativas entre las dimensiones de la p...
In this study a video-monitoring system was used to analyze the presence of mesoforms during a ti... more In this study a video-monitoring system was used to analyze the presence of mesoforms during a time period of five years in the urban beach of La Victoria, Cádiz, Spain. This technique allowed the generation of plan views using an improved version of ULISES software. The presence and spatiotemporal variability of the most common mesoforms, such as bars and cusps, was identified in all the plan views. Furthermore, the morphodynamic state of the beach was investigated in combination with local hydrodynamic data. The cusp systems were also studied by means of wavelet analyses and different theories on cusps formation were tested. The presence of the investigated features was related to the wave energy and its seasonal variations. The behavior of the mesoforms demonstrated the important role of a subtidal rocky outcrop in the nearshore processes. The results also show that bars and cusps as indicators of the nearshore processes are a useful tool for the macroscopic analysis of surf zone...
Commercially pure (c.p.) iron powders with a deliberate high degree of oxidation were consolidate... more Commercially pure (c.p.) iron powders with a deliberate high degree of oxidation were consolidated by medium-frequency electrical resistance sintering (MF-ERS). This is a consolidation technique where pressure, and heat coming from a low-voltage and high-intensity electrical current, are simultaneously applied to a powder mass. In this work, the achieved densification rate is interpreted according to a qualitative microscopic model, based on the compacts global porosity and electrical resistance evolution. The effect of current intensity and sintering time on compacts was studied on the basis of micrographs revealing the porosity distribution inside the sintered compact. The microstructural characteristics of compacts consolidated by the traditional cold-press and furnace-sinter powder metallurgy route are compared with results of MF-ERS consolidation. The goodness of MF-ERS versus the problems of conventional sintering when working with oxidized powders is analyzed. The electrical ...
Evidence that periodontal disease is a possible risk factor for cognitive impairment may be expla... more Evidence that periodontal disease is a possible risk factor for cognitive impairment may be explained by the inflammatory hypothesis. The aim of this study was to determine whether periodontitis is related to the amyloid-β (Aβ) load in blood and the role of any such relationship in the association between Aβ and cognitive impairment. A case-control study was performed in elderly people diagnosed with cognitive impairment with or without dementia (cases) and cognitively healthy elderly people; data were collected on the medical and dental history of participants, and blood samples were drawn to determine Aβ levels using an enzyme-linked immunosorbent assay. The study included 166 cases and 122 controls. Higher blood Aβ1-42 levels (p=0.013) and higher Aβ42/40 ratio (p=0.058) were observed in participants with severe attachment loss than in the other participants. Periodontitis was a significant interaction variable, given that the association between Aβ1-42 and Aβ1-4o and cognitive im...
The control of bacterial dental plaque through daily oral hygiene is essential to prevent oral di... more The control of bacterial dental plaque through daily oral hygiene is essential to prevent oral diseases such as caries or periodontal disease, especially in at-risk populations, including the elderly with mild cognitive impairment and dementia. The aim of this study was to determine the association between different levels of cognitive impairment and dementia in an elderly population and their capacity to maintain adequate oral hygiene. A case-control study (elderly with versus without mild cognitive impairment or dementia) was performed in Granada, Spain. Outcome variables were tooth/prosthesis-brushing frequency/day, bacterial plaque index, and gingival bleeding index. Statistical models were adjusted by age, sex, educational level, and tobacco and alcohol habits. The study included 240 cases and 324 controls. The final model, adjusted by age, sex, educational level, and tobacco and alcohol consumption, showed a significant association between degree of cognitive impairment and daily oral hygiene, accumulation of bacterial plaque, and gingival bleeding. In summary, deficient daily oral hygiene, evidenced by greater bacterial dental plaque accumulation and gingival inflammation, is independently associated with cognitive impairment, even at its earliest stage.
During the anthesis process many floral visitants come to the flowers and in many cases they act ... more During the anthesis process many floral visitants come to the flowers and in many cases they act like pollinators or like pollen robbers. In the passion fruit cultures Apis mellifera is one of the most important pollen robbers causing loss in the productivity of this cultures. The goal of this research was to reduce the amount of pollen robber using
... Diario de sesiones del album sentidos prohibidos (Parte III y última). Autores: JuanMari Mont... more ... Diario de sesiones del album sentidos prohibidos (Parte III y última). Autores: JuanMari Montes; Localización: Revistart: revista de las artes, ISSN 1134-7988, Nº. 63, 2002 , pág. 43. Fundación Dialnet. Acceso de usuarios registrados. ...
Measuring the nearshore bathymetry is critical in coastal management and morphodynamic studies. T... more Measuring the nearshore bathymetry is critical in coastal management and morphodynamic studies. The recent advent of Unmanned Aerial Vehicles (UAVs), in combination with coastal video monitoring techniques, allows for an alternative and low cost evaluation of the nearshore bathymetry. Camera calibration and stabilization is a critical issue in bathymetry estimation from video systems. This work introduces a new methodology in order to obtain such bathymetries, and it compares the results to echo-sounder ground truth data. The goal is to gain a better understanding on the influence of the camera calibration and stabilization on the inferred bathymetry. The results show how the proposed methodology allows for accurate evaluations of the bathymetry, with overall root mean square errors in the order of 40 cm. It is shown that the intrinsic calibration of the camera, related to the lens distortion, is the most critical aspect. Here, the intrinsic calibration that was obtained directly du...
Abajo: se repite los tres en el resumen. This work studies the effect of high-level fish meal rep... more Abajo: se repite los tres en el resumen. This work studies the effect of high-level fish meal replacement with insect meal: YW meal (obtained from Tenebrio larvae fed a broiler diet), BSF meal (from hermetia larvae fed broilers diet), BSFm meal (obtained from hermetia larvae fed discard fish) on growth performance nutritive indices and in vitro digestibility of Dicentrarchus labrax juvenile. Three different insect meals were used: BSF meal from hermetia larvae fed broilers diet; BSF improve (BSFm) obtained from hermetia larvae fed discarded fish; YW meal obtained from the larvae of Tenebrio fed a broiler diet. Five diets were used, a control (C) diet and four experimental diets by replacing fishmeal with insect meal from BSF at 30% and 50% (BSF30 and BSF50) substitutions, BSFm at 50% substitution (BSF50 m) and YM at 50% substitution (YW50). Nutritional and growth indices worsened by including insect meal, especially for hermetia meal at 50% substitution, BSF50 and BSF50 m. The inter...
In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of th... more In this work, powders of cemented ultrafine WC-6 wt.% Co were consolidated. The feasibility of the medium frequency electrical resistance sintering (MF-ERS) technique were studied to prevent WC grain growth during consolidation. Porosity and hardness were measured at different zones of the MF-ERS compacts. The compacts showed a slight inhomogeneity in their properties across their section, but it was controlled by choosing suitable values of the processing parameters. The optimal values for the material studied were current intensities between 7 and 8 kA and sintering times between 600 and 800 ms. The main achievement using this consolidation method was that sintered compacts essentially maintained the initial WC grain size. This was attained to processing times of less than 2 s, and without the need for using protective atmospheres.
El objetivo del trabajo es identificar las áreas de estudio y los factores que toman en cuenta lo... more El objetivo del trabajo es identificar las áreas de estudio y los factores que toman en cuenta los infantes al registrar sus aspiraciones de carrera u ocupación. La investigación se fundamenta en las teorías contextuales y evolutivas del ciclo de vida de las personas e integra las profesiones tradicionales por género; además implementa un proyecto de investigación-acción en grupos de nivel primaria de dos escuelas de Tepatitlán, Jalisco (México). Los resultados develan que los campos del saber continúan eligiéndose de acuerdo con el género y que los más frecuentes son: ciencias de la salud, biotecnología y ciencias agrícolas, humanidades e ingenierías. Los factores de interacción con mayores registros son de nivel macro-medio y micro (entorno inmediato y próximo), donde se encuentran la familia y la escuela. La infancia es un periodo de logros vocacionales; los programas de orientación vocacional en educación básica ampliarían el panorama informativo y generarían condiciones favorab...
Cemented carbide is a hard composite material, used widely in a variety of industries. The value ... more Cemented carbide is a hard composite material, used widely in a variety of industries. The value of the global tungsten carbide market is expected to grow by 4.4% (compound annual growth rate) from 2017 to 2022. One of the main markets is in metal cutting and wear parts, where small pieces (or inserts), a few grams in weight, are used. Field-assisted sintering technique (FAST) technologies allow for the production of small blanks in a single step from powder, which are near final dimensions. Production cycles are very short. In this paper, one of the FAST processes, the ERS technology, is applied to obtain WC10Co parts. A review of the process variable effects on the final properties of the parts is accomplished. Final properties of a range of conventionally produced inserts are obtained, using 100 MPa compacting pressure, 80 MA/m2 of current density, and processing times of around 800 ms.
El presente estudio se planteó como objetivos identificar el nivel predictivo que tienen las dime... more El presente estudio se planteó como objetivos identificar el nivel predictivo que tienen las dimensiones de la personalidad sobre la imagen corporal (IC) y sus posibles relaciones, así como comparar dichas variables conforme al sexo de los participantes. La población de estudio fueron alumnos de tres carreras técnicas de una institución de educación pública del estado de Jalisco, México. La muestra estuvo compuesta por 567 alumnos. El instrumento para medir la imagen corporal fue el Cuestionario de Insatisfacción con la Imagen Corporal (Body Shape Questionnaire) y para evaluar la Personalidad, el Inventario de Personalidad NEO Revisado NEO FFI (versión reducida del NEO PI-R). En materia de resultados y mediante un análisis de regresión lineal múltiple se identificaron como variables predictoras de la imagen corporal —insafisfecha— la dimensión de la personalidad denominada neuroticismo y el sexo femenino; además, se encontraron relaciones significativas entre las dimensiones de la p...
In this study a video-monitoring system was used to analyze the presence of mesoforms during a ti... more In this study a video-monitoring system was used to analyze the presence of mesoforms during a time period of five years in the urban beach of La Victoria, Cádiz, Spain. This technique allowed the generation of plan views using an improved version of ULISES software. The presence and spatiotemporal variability of the most common mesoforms, such as bars and cusps, was identified in all the plan views. Furthermore, the morphodynamic state of the beach was investigated in combination with local hydrodynamic data. The cusp systems were also studied by means of wavelet analyses and different theories on cusps formation were tested. The presence of the investigated features was related to the wave energy and its seasonal variations. The behavior of the mesoforms demonstrated the important role of a subtidal rocky outcrop in the nearshore processes. The results also show that bars and cusps as indicators of the nearshore processes are a useful tool for the macroscopic analysis of surf zone...
Commercially pure (c.p.) iron powders with a deliberate high degree of oxidation were consolidate... more Commercially pure (c.p.) iron powders with a deliberate high degree of oxidation were consolidated by medium-frequency electrical resistance sintering (MF-ERS). This is a consolidation technique where pressure, and heat coming from a low-voltage and high-intensity electrical current, are simultaneously applied to a powder mass. In this work, the achieved densification rate is interpreted according to a qualitative microscopic model, based on the compacts global porosity and electrical resistance evolution. The effect of current intensity and sintering time on compacts was studied on the basis of micrographs revealing the porosity distribution inside the sintered compact. The microstructural characteristics of compacts consolidated by the traditional cold-press and furnace-sinter powder metallurgy route are compared with results of MF-ERS consolidation. The goodness of MF-ERS versus the problems of conventional sintering when working with oxidized powders is analyzed. The electrical ...
Evidence that periodontal disease is a possible risk factor for cognitive impairment may be expla... more Evidence that periodontal disease is a possible risk factor for cognitive impairment may be explained by the inflammatory hypothesis. The aim of this study was to determine whether periodontitis is related to the amyloid-β (Aβ) load in blood and the role of any such relationship in the association between Aβ and cognitive impairment. A case-control study was performed in elderly people diagnosed with cognitive impairment with or without dementia (cases) and cognitively healthy elderly people; data were collected on the medical and dental history of participants, and blood samples were drawn to determine Aβ levels using an enzyme-linked immunosorbent assay. The study included 166 cases and 122 controls. Higher blood Aβ1-42 levels (p=0.013) and higher Aβ42/40 ratio (p=0.058) were observed in participants with severe attachment loss than in the other participants. Periodontitis was a significant interaction variable, given that the association between Aβ1-42 and Aβ1-4o and cognitive im...
The control of bacterial dental plaque through daily oral hygiene is essential to prevent oral di... more The control of bacterial dental plaque through daily oral hygiene is essential to prevent oral diseases such as caries or periodontal disease, especially in at-risk populations, including the elderly with mild cognitive impairment and dementia. The aim of this study was to determine the association between different levels of cognitive impairment and dementia in an elderly population and their capacity to maintain adequate oral hygiene. A case-control study (elderly with versus without mild cognitive impairment or dementia) was performed in Granada, Spain. Outcome variables were tooth/prosthesis-brushing frequency/day, bacterial plaque index, and gingival bleeding index. Statistical models were adjusted by age, sex, educational level, and tobacco and alcohol habits. The study included 240 cases and 324 controls. The final model, adjusted by age, sex, educational level, and tobacco and alcohol consumption, showed a significant association between degree of cognitive impairment and daily oral hygiene, accumulation of bacterial plaque, and gingival bleeding. In summary, deficient daily oral hygiene, evidenced by greater bacterial dental plaque accumulation and gingival inflammation, is independently associated with cognitive impairment, even at its earliest stage.
During the anthesis process many floral visitants come to the flowers and in many cases they act ... more During the anthesis process many floral visitants come to the flowers and in many cases they act like pollinators or like pollen robbers. In the passion fruit cultures Apis mellifera is one of the most important pollen robbers causing loss in the productivity of this cultures. The goal of this research was to reduce the amount of pollen robber using
... Diario de sesiones del album sentidos prohibidos (Parte III y última). Autores: JuanMari Mont... more ... Diario de sesiones del album sentidos prohibidos (Parte III y última). Autores: JuanMari Montes; Localización: Revistart: revista de las artes, ISSN 1134-7988, Nº. 63, 2002 , pág. 43. Fundación Dialnet. Acceso de usuarios registrados. ...
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