2,074 research outputs found

    "The Effect of Innovation and Technological Change on Information Flows, Authority and Industry Associations in Japan"

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    How did innovation and technological change affect information flows and the degree of legitimacy afforded authorities such as industry associations? In this paper, six cases from the photography industry are analyzed over time. The findings indicate first that changes in innovation affected information flows and the degree of legitimacy afforded authorities such as industry associations. Second, in response to changes spurred by technological innovation, the legitimacy of authority that was lost could be regained.

    Evaluation of Risk Management Methods for Satsuma Mandarin

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    Simulation of production budgets were used to compare net discounted returns and the distribution of returns under alternative risk-mitigation scenarios. Results indicate that the combination of freeze protection and crop insurance increases expected net discounted 20-year returns while decreasing the downside risk. Break-even prices ranged from .257to.257 to .289 per pound. Crop insurance returns were constant across price.Satsuma oranges, freeze protection, crop insurance, production budget, simulation, Crop Production/Industries, Farm Management, Risk and Uncertainty, C63, D81, Q12,

    Histological evaluation of subepithelial connective tissue grafts harvested by two different techniques. Preliminary study in humans

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    Subepithelial connective tissue graft (SCTG) is an essential therapeutic tool in periodontal plastic surgery and implantology. The aim of this preliminary study was to observe and make a histological and histomorphometric comparison of the composition of subepithelial connective tissue grafts (SCTGs) harvested from the palatal mucosa by two different harvesting techniques: mucoperiosteal (lamina propria and complete submucosa including periosteum) and mucosal (lamina propria and a portion of the submucosa). The main hypothesis proposes that SCTG harvested with the mucosal technique contains a greater proportion of connective tissue proper (CTP) and a lower proportion of adipose tissue (AT) than the mucoperiosteal technique. Twenty healthy patients who required SCTG for different purposes were selected and assigned to one of the two following groups: group A (n=10; mucoperiosteal harvesting technique) and group B (n=10, mucosal harvesting technique). The histological sample was obtained by removing a 2 mm thick slice from the most distal portion of the graft. The proportions of adipose tissue (AT), connective tissue proper (CTP) and vascular tissue (VT) were evaluated. In group A, histomorphometric analysis showed that CTP accounted for 58.2% of the graft while AT accounted for 32.64%. In group B, the proportions of CTP and AT were 79.86% and 11.93%, respectively. The differences between groups were statistically significant for both tissues (p< .05). In contrast, no statistically significant difference was observed in the proportion of VT. Within the limitations of this study, the results show that the SCTGs harvested by the mucosal technique contain a greater proportion of CTP and a lower proportion of AT than those obtained by the mucoperiosteal technique, whereas the proportion of VT does not differ. Further long-term clinical and histological studies with more samples are needed to evaluate the clinical implications of SCTG composition.El injerto de tejido conectivo subepitelial (ITCSE) es una herramienta indispensable en la cirugía plástica periodontal y la implantología. El objetivo del presente estudio preliminar fue observar y comparar histológica e histomorfometricamente la composición de los injertos de tejido conectivo subepitelial (ITCSE) obtenidos de la mucosa palatina mediante dos técnicas diferentes: mucoperióstica (lamina propia y submucosa incluyendo el periostio) y mucosa (lámina propia y parte de la submucosa). La principal hipótesis postula que el ITCSE obtenido mediante la técnica mucosa contiene mayor proporción de tejido conectivo propiamente dicho (TCP) y menor proporción de tejido adiposo (TA) que el obtenido mediante la técnica mucoperióstica. El presente estudio incluyó veinte pacientes sanos que requerían ITCSE por diferentes motivos, los cuales fueron distribuidos de forma equitativa en dos grupos: grupo A (n=10; técnica de obtención mucoperióstica) y grupo B (n=10; técnica de obtención mucosa). La muestra histológica se obtuvo removiendo una porción de 2 mm de ancho de la parte más distal del injerto. Se evaluó la proporción (%) de tejido adiposo (TA), tejido conectivo propiamente dicho (TCP) y tejido vascular (TV). En el grupo A, el análisis histomorfométrico mostró que el TCP constituía el 58.2% del tejido mientras que el tejido adiposo constituía el 32.64%. En el grupo B, la proporción de TCP y AT fue 79.86%y 11.93%, respectivamente. Las diferencias observadas entre los grupos fueron estadísticamente significativas para ambos tejidos (p< .05). En cambio, no se observaron diferencias estadísticamente significativas en la proporción de TV. Dentro de las limitaciones del presente estudio, los resultados mostraron que los ITCSE obtenidos mediante la técnica mucosa contienen mayor proporción de TCP y menor proporción de TA que los obtenidos con la técnica mucoperióstica, mientras que el TV permanece estable. Se requieren estudios longitudinales clínicos e histológicos a largo plazo con mayor cantidad de muestras para evaluar las implicancias clínicas de la composición del ITCSE

    El Apoyo a la Educación de Niños en los Barrios Marginales Urbanos de Nairobi: Percepciones de la Comunidad y los Padres con una Fase Expandida de un Programa de Intervención Educativa

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    The objective of this paper is to examine the perceptions of community elders and parents on their roles regarding support to their children’s education. Data come from the qualitative component of a baseline survey conducted in Korogocho and Viwandani, two urban informal settlements in Nairobi, Kenya. Data were collected in April-May 2016 through in-depth interviews, key informant interviews and focus group discussions. Results demonstrated that community elders internalized their role as the face of government in their respective communities, and enforced the implementation of education policies on behalf of all children. The community leaders also saw as part of their role the need to encourage parents to be active participants in their children’s education. Female parents with boys in the program perceived that parental monitoring and follow-up was important to ensure that their children attended school, and completed work assigned by the teachers, more so in Korogocho. Overall, parents recognized the importance of the role they played in their children’s education. This is a good entry point as parental support will ensure the success and sustainability of the intervention to improve educational outcomes for children, which in turn will help their children navigate the challenging period that adolescence presents.El objetivo de este artículo es examinar las percepciones de los ancianos de la comunidad y los padres sobre sus roles respecto al apoyo educativo a sus hijos. Los datos provienen del componente cualitativo de una encuesta de referencia realizada en Korogocho y Viwandani, dos asentamientos urbanos precarios en Nairobi, Kenia. Los datos se recopilaron en Abril-Mayo de 2016 a través de entrevistas en profundidad, entrevistas con informantes clave y discusiones de grupos focales. Los resultados demostraron que los ancianos de la comunidad internalizaron su papel como la cara del gobierno en sus respectivas comunidades, e impusieron la implementación de políticas educativas en nombre de todos los niños. Los líderes de la comunidad también vieron, como parte de su rol, la necesidad de alentar a los padres a ser participantes activos en la educación de sus hijos. Las madres con niños en el programa percibieron que el control de los padres y el seguimiento era importante para asegurar que sus hijos asistieran a la escuela y completaran el trabajo asignado por los maestros, más aún en Korogocho. En general, los padres reconocieron la importancia en la educación de sus hijos. Este es un buen punto de partida ya que el apoyo de los padres asegurará el éxito y la sostenibilidad de la intervención para mejorar los resultados educativos de los niños, que a su vez ayudará a sus hijos durante la adolescencia

    Eudragit E100 and Polysaccharide Polymer Blends as Matrices for Modified-Release Drug Delivery II: Swelling and Release Studies

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    Purpose: To compare the effects of two states of polymer/polymer blending (dry and aqueous/lyophilized) of locust bean gum with Eudragit® E100 and sodium carboxymethylcellulose on swelling and drug (levodopa) release from their tablet matrices.Methods: Sodium carboxymethylcellulose (SCMC), Eudragit® (E100) and locust bean (LB) were blended in their dry (as purchased) state or modified by aqueous blending and subsequent lyophilization prior to use as tablet matrices. The tablets were evaluated for swelling and in vitro drug release. Furthermore, in vivo absorption was predicted from the in vitro release data by convolution method.Results: E100 matrices exhibited little or no swelling while the matrices of SCMC and LB and their blends exhibited a degree of swelling > 180 %. Aqueous blending and lyophilization modulated the rate of release from matrices formulated with LB, SCMC and their polymer/polymer blends. Drug release profiles of the lyophilized polymer/polymer blends matrices were dissimilar to those of the dry polymer/polymer blends. Formulations F1aq, F2aq and F3aq exhibited fairly uniform absorption in the first 8 h, indicating the possibility of producing a steady delivery of drug.Conclusion: Polymer blending of LB, SCMC and E100, achieved by aqueous blending and lyophilization, enhances the performance of the matrices thereby exhibiting controlled levodopa release with no burst effect and the tablets retained their three-dimensional network.Keywords: Controlled release, Drug delivery, Eudragit, Locust bean, Levodopa, Matrix, Polymer blend, Sodium carboxymethylcellulos

    Eudragit E100 and Polysaccharide Polymer Blends as Matrices for Modified-Release Drug Delivery I: Physicomechanical Properties

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    Purpose: To compare the effects of two states of polymer/polymer blending (dry and aqueous/lyophilized) on the physicomechanical properties of tablets, containing blends of locust bean gum (LB) with Eudragit® E100 (E100) and sodium carboxymethylcellulose (SCMC) as matrices.Methods: LB, SCMC and E100 were blended in their dry (as purchased) state or modified by aqueous blending and subsequent lyophilization, prior to use as matrices in tablets. The polymer blends were characterized by infra-red spectroscopy (FTIR), flow and compressibility tests, as well as physicomechanical analysis of their tablets.Results: No significant variations were noticeable in the FTIR peaks of the individual polymers in the dry and the aqueous/lyophilized states. Aqueous/lyophilized blending of the polymers resulted in better flow properties. The aqueous/lyophilized matrices were denser with improved mechanical strength and the tablets were harder than those produced from dry blended polymers.Conclusion: Dry blending of LB with E100 and SCMC greatly improved the physicomechanical properties of the tablets. This was further enhanced by aqueous/lyophilized blending.Keywords: Drug delivery, Polymer blend, Eudragit, Locust bean gum, Levodopa, Sodium carboxymethylcellulose, Matrix, Physicomechanical propertie

    Analysis of Nematic Liquid Crystals with Disclination Lines

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    We investigate the structure of nematic liquid crystal thin films described by the Landau--de Gennes tensor-valued order parameter with Dirichlet boundary conditions of nonzero degree. We prove that as the elasticity constant goes to zero a limiting uniaxial texture forms with disclination lines corresponding to a finite number of defects, all of degree 1/2 or all of degree -1/2. We also state a result on the limiting behavior of minimizers of the Chern-Simons-Higgs model without magnetic field that follows from a similar proof.Comment: 40 pages, 1 figur

    The Ursinus Weekly, November 20, 1950

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    14th Messiah will be given December 7th • Fifteen seniors honored with listing in annual publication of Who\u27s Who • WSSF drive kindles much campus activity • Thespians to give psychological mystery, Angel Street, December first and second • May Day petition deadline is Tuesday • Bloodmobile coming to Collegeville December 7 • Ruby group pictures to be taken after Thanksgiving • MSGA to seek vote on dorm amendment • Jones reads poems of Eliot to Tuesday night audience • Gillespie\u27s orchestra to furnish music for December 8 Sunnybrook senior ball • Editorial: Spirit of Thanksgiving; Dorm government: Its meaning; Counsel for the councils • Frosberg has three-fold job • Herbsleb discusses international law before local IRC • Freshmen women elect Jen Price chairman of decoration committee • Library work in progress • Undergrads invited to join competition in contract bridge • Dart tourney • Como concert postponed • Chess Club wins • Herbsleb addresses pre-legal society • Belles edged 2-1 by Owlette squad • Chestnut Hill falls to Snell\u27s Belles 5-0 • Jayvee coeds triumph over Chestnut Hill 2-0 • Diplomats win 2-0 over Bear booters • Dragons 5-1 victors over soccer squad • Plan student bowling • Grizzlies tie Susquehanna in grid season finale, 6-6https://digitalcommons.ursinus.edu/weekly/1553/thumbnail.jp
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