1,967 research outputs found
Land surveying with UAV photogrammetry and LiDAR for optimal building planning
No full textAccurate land surveys are fundamental for optimal building planning, as topography bridges architecture and landscape. This paper proposes a Digital Feature Model (DFM) that integrates UAV photogrammetry and LiDAR data to optimize terrain mapping. UAV photogrammetry provides high-accuracy mapping of textured anthropic surfaces, while LiDAR excels in penetrating vegetation-covered areas. By segmenting and fusing datasets from both sensors, the DFM enhances accuracy across diverse terrain conditions. In a built environment case study, 233 measured points representing ground, vegetation, and anthropic features were analyzed to validate the methodology. The DFM achieved a vertical RMSE of 0.075 m, outperforming the photogrammetry and LiDAR models with RMSEs of 0.209 and 0.130 m. This approach improves field data reliability, enabling the creation of accurate topographic plans and subsequent GIS spatial analyses critical for optimal building planning and sustainable land development
Study of denaturation of artificially aged and old parchments by Differential Scanning Calorimetry
No full textThermal stability of parchments by high-sensitivity DSC determinations in aqueous solution environment
No full textDeterminación de las propiedades bromatológicas, físicoquimicas y termofísicas de la badea (passiflora quadrangularis)
No full textEl propósito de este trabajo fue caracterizar los frutos de la badea (Passiflora quadrangularis) en dos estados de madurez: 80 - 95%, analizando las siguientes características: Propiedades Bromatológicas (Humedad, proteínas, grasa, fibra cenizas, azucares reductores, carbohidratos totales y energía), propiedades fisicoquímicas (Diámetro, longitud, peso, rendimiento, acidez, solidos solubles totales, pH e índice de madurez), con base en los resultados bromatológicos obtenidos se usaron las correlaciones de Choi y Okos (1985) y el software DEPROTER (Alvis et al., 2012) para calcular las propiedades termofísicas a la badea: capacidad calorífica (Cp), densidad (ρ), conductividad térmica (K ) y difusividad térmica (α), se determinaron también los parámetros colorimétricos (L*, a*, b*, C* y h*) en la pulpa de la badea. De los resultados obtenidos se determinó que no existen diferencias estadísticamente significativas entre los estados de madurez del fruto (80% y 95% respectivamente) en variables como diámetro (10,833cm y 11,733cm), longitud (22,4 cm y 23,466 cm), rendimiento (12,985 y 12,269), proteínas (1,44068% y 1,43187%) , azucares reductores (2,656 % y 2,95%) y carbohidratos (12,4374 % y 12,7586 %); y hubo diferencias significativas en variables como peso (948 g y 992,8 g), %acidez(2,005 % y 1,173%), S.S.T (10,822 ºBrix y 12,727 ºBrix), pH (3,507 y 3,907 ), índice de madurez (5,397 y 10,847), humedad(84,774% y 83,641 %), grasa (0,2360 % y 0,07247 %), fibra(0,2558 % y 0,1745 %) y ceniza (0,8557% y 1,92056 %). Los datos arrojados por las correlaciones de Choi y Okos (1985) muestran diferencias estadísticamente significativas para los dos estados de madurez analizados. Los valores de las propiedades termofísicas (difusividad y conductividad térmica, calor específico y la densidad de la Badea) fueron 1.39259x10-7 m2 s-1, 0.5552 W m-1ºC-1, 3771,5644 J kg-1 °C-1 y 1057,1957 kg m-3 respectivamente. En cuanto a los factores colorimétricos (L*, a*, b*, C* y h*) se compararon los estados de madurez de 80% y 95% con un patrón de 100 % de madurez, dando como resultado diferencias significativas para cada parámetro.Pregrad
Repuesta de tres tamaños de varetas de badea (Passiflora quadrangularis) a la aplicación de bioestimulantes en fase de vivero
No full textThe research´s objective is entitled "Response of three sizes of badea (Passiflora quadrangularis) to the application of biostimulants in the nursery stage", was to determine the effect of biostimulants on badea (Passiflora quadrangularis) seedlings in the nursery stage. It was carried out in the Montecristi canton in the community of Los Bajos del Pechiche. The methodology used in the research was exploratory, an experimental design of randomized complete blocks (DBCA) with a 3x3+1 factorial arrangement was used, with a total of 480 badea plants, these were distributed in 10 treatments and three replications, giving a total of 30 experimental units with 16 plants in each one of them. The results indicated that when using mycorrhiza, the average height (32.5 cm) and stem diameter (8.67 mm), plant weight (42.67 g), budded guides (6.67 plants), leaf length (12.14 cm), internode length (5.31 cm), number of leaves (6.33 leaves), and leaf width (9.22 cm) were higher than the rest. Rooting+20 cm was higher in root weight with 11.67 g and Biol+30 cm was higher in petiole length with 2.22 cm. Mycorrhiza represented the best economic alternative with 4704 % marginal rate of return, net benefit of 4.01 USD. The use of Mycorrhiza is recommended because the results support than biostimulant get better morphological characteristics of the badea in propagation by vareta.La presente investigación titulada “Repuesta de tres tamaños de varetas de badea (Passiflora quadrangularis) a la aplicación de bioestimulantes en fase de vivero”, tuvo como objetivo determinar el efecto de los bioestimulantes en las varetas de badea (Passiflora quadrangularis) en fase de vivero. Se llevó a cabo en el cantón Montecristi en la comunidad Los Bajos del Pechiche. La metodología empleada en la investigación fue exploratoria, se utilizó un diseño experimental de bloques completos al azar (DBCA) con arreglo factorial 3x3+1, con un total de 480 plantas de badea, estas fueron distribuidas en 10 tratamientos y tres repeticiones, dando un total de 30 unidades experimentales ubicando 16 plantas en cada una de ellas. Los resultados indicaron que al utilizar Micorriza se obtuvieron promedios mayores que el resto en altura con 32.5 cm y diámetro de tallo con 8.67 mm, peso de planta con 42.67 g, guías brotadas con 6.67 plantas, largo de hoja con 12.14 cm, longitud de entrenudos con 5.31 cm, número de hojas con 6.33 hojas, ancho de hoja fue mayor con 9.22 cm. Enraizante+20 cm fue mayor en el peso radicular con 11.67 g y Biol+30 cm fue mayor en longitud de peciolo con 2.22 cm. Micorriza representó la mejor alternativa económica con 4704 % de tasa de retorno marginal, beneficio neto de 4.01 USD. Se recomienda utilizar Micorriza ya que los resultados respaldan que este bioestimulante permitió obtener mejores características morfológicas de la badea en la propagación por vareta
Environmental damage of historical parchments investigated by calorimetry and e-microscopy
No full textSome Remarks on the Actuality of Tourism Area Life Cycle (TALC) Theory. The Case of Italy
No full textDesign and evaluation of neuroregenerative properties of 4D hydrogel scaffolds
No full textUnderstanding and controlling the interactions that occur between cells and engineered materials (i.e. attachment-detachment, or that influence cell development, function or fate) are central challenges towards progress in the development of biomedical devices and regenerative medicine therapies. A particularly complex system to translate in vitro is that of the dorsal root ganglion (DRG), an interesting research target due to its relevance in peripheral nerve repair, and to its connection to the non-regenerative central nervous system (CNS). Severe peripheral nerve injuries have a limited regenerative capacity, with interventions typically not leading to full functional recovery. Ways to improve functional recovery include engineering devices that connect to both injured sides, having both cell growth guiding properties and a gradient contour to control the extent of cell-scaffold interactions. Direct ink writing (DIW) is prominent among fabrication techniques relevant to tissue engineering due to its versatility in terms of the range of materials that can be used and the limitless geometries that are easily programmed. This thesis describes three different in vitro systems, representing increasing functionality towards next generation 4D scaffolds for nerve reconstruction in vitro or nerve regeneration in vivo. The first takes advantage of cell-extracellular matrix interactions and presents an extracellular matrix (ECM)-mimetic surface treatment which, combined with DIW scaffolds of a wide range of geometries and a “blank-slate” hydrogel (pHEMA), leads to a means to exert control on the degree of cell-scaffold interactions, and manipulate cell culture development in 4D. The second explores a different class of scaffolds, compressively buckled mesostructures, which can be used as high-strain cellular frameworks leading to interesting cell behavior depending on scaffold strain and geometric aspect ratio. Further, this approach allows for the incorporation of increased functionality into these mesostructures, as they can function as electronic scaffolds for stimulation and recording of action potentials from DRG cells. Finally, the third approach combines efforts of the first two projects, building upon the ink and surface chemistries explored in the first, and the geometries explored in the second, adding a bioactive inorganic composite to create selectively growth compliant scaffolds that generate a hierarchal reorganization of DRG cells in culture mimicking that of a nerve. With the possibility of extending the complexity of these scaffolds by including controlled degradation, this last approach provides important guidelines to developing effective 4D scaffolds for nerve regeneration.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2019-12-01The student, Adina Badea, accepted the attached license on 2017-12-04 at 16:17.The student, Adina Badea, submitted this Dissertation for approval on 2017-12-04 at 16:38.This Dissertation was approved for publication on 2017-12-08 at 12:29.DSpace SAF Submission Ingestion Package generated from Vireo submission #11838 on 2019-08-22 at 16:17:41Made available in DSpace on 2019-08-23T20:44:17Z (GMT). No. of bitstreams: 6
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B.1 Programming mechanical and physicochemical properties of 3D hydrogel cellular microcultures via direct ink writing.pdf: 7230067 bytes, checksum: 0d564f61b0ffc65a1ee5ba0500c6a4eb (MD5)
B.2 Quantitative reflection imaging for the morphology and dynamics of live Aplysia californica pedal ganglion neurons cultured on nanostructured plasmonic crystals.pdf: 1232215 bytes, checksum: 42fd3a0f4b98ccc9affdea3e7bd18bc8 (MD5)
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Previous issue date: 2017-12-08Embargo set by: Seth Robbins for item 112232
Lift date: 2021-08-23T20:44:50Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 112232
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Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 112232
Lift date: 2021-08-23T20:47:38Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemEmbargo set by: Seth Robbins for item 112232
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Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemLimited Restriction Lifted for Item 112232 on 2021-08-24T09:15:20Z
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