Entraves e alternativas para a viabilização econômica de projetos de micro e minigeração fotovoltaica

O Brasil historicamente utiliza energia renovável (hidroeletricidade) na base de sua matriz energética. Nos últimos 10 anos, a partir de políticas de incentivo, como o PROINFA, outras alternativas renováveis vêm experimentando crescimento acelerado em contribuição para a matriz, num primeiro momento com a energia eólica e, mais recentemente, com a energia solar. Esta última apresenta-se atualmente como a melhor alternativa para a expansão da Geração Distribuída (GD) no país. O presente trabalho tem por objetivo identificar fatores que possam inviabilizar investimentos em projetos de sistemas fotovoltaicos conectados à rede (SFCR), bem como apontar um caminho para viabilização dos mesmos. Em um primeiro momento, trata do dimensionamento de uma planta solar fotovoltaica de 48 kWp para um estabelecimento comercial com sede na serra do Rio Grande do Sul. Posteriormente, através de análise de viabilidade econômico-financeira, discute os entraves econômicos e políticos para a viabilização e o aumento do volume de investimentos em projetos dessa natureza, buscando apresentar possíveis alternativas para solução destes entraves. O estudo conclui que a conjuntura atual, com elevadas taxas de juros, inibe os investimentos, e a falta de linhas de crédito específicas para projetos desta natureza faz com que o investimento em uma planta solar fotovoltaica apresente um retorno insatisfatório no caso de uma alavancagem de 70%. Por outro lado, aponta que o surgimento de novas linhas de crédito, com condições especiais para investimentos em energia renovável, mostra-se uma medida suficiente, do ponto de vista financeiro, para viabilização de um maior número de projetos de SFCR, contribuindo para a expansão em larga escala da GD no Brasil

Elaboración y evaluación de las características organolépticas de preparaciones de pastelería hechas a base de plátano verde (Musa Acuminata Ab) y orito maduro (Musa Acuminata Aa), Santo Domingo de Los Colorados 2014

Esta investigación tuvo como objetivo utilizar el plátano verde y el orito maduro como ingredientes principales para elaborar y evaluar las características organolépticas de recetas de pastelería a los estudiantes de séptimo semestre paralelo “A” con el fin de dar a conocer más opciones dentro de la gastronomía ecuatoriana. Las recetas de pastelería que se elaboraron fueron: galletas, masa quebrada, bizcocho, donas y empanadas, que se realizaron con las diferentes técnicas (mezclar, amasar, tamizar…) de pastelería y en las temperaturas (180 °C) necesarias de acuerdo a cada preparación y con los métodos de cocción más utilizados en esta área de cocina. Al realizar el análisis bromatológico y microbiológico al producto que tuvo más aceptabilidad se demostró que está apto para el consumo humano ya que contiene proteína, fibra, grasa y ceniza y está dentro de los parámetros normales establecidos por la Organización Mundial de la Salud. El producto con más aceptación fue las empanadas ya que tuvo un 62,5 % de aceptabilidad en cuanto al sabor, 68,75 % en cuanto a textura, 50 % en cuanto a olor y 56,25 % en cuanto a color. Con este estudio se obtuvo recetas de pastelería a base de plátano verde y orito maduro que contribuyen como una variedad dentro de la gastronomía ecuatoriana y es un alimento nutritivo dentro de la dieta diaria y se recomienda que al momento de elaborar estos productos deben conservarse en envases cubiertos para evitar que cambien su textura.This researchobletive is to use Green plantain and orito as main ingredients to develop and evaluate the organoleptic characteristics of pastry recipes to publicize more options within Ecuadorian cuisine. The developed pastry recipes were: cookies, shortcrust, cake, donuts and pies, which were baked with different (mixing, kneading, sifting) pastry and temperatures (180° C) techniques required according to each preparation and most used cooking methods in this cuisine area. Once the bromatological and microbiological analysis were made, the product with the highest acceptability was the pies, it was demonstrated that this product is unfit for human consumption because it contains protein, fiber, fat, ash and it is within normal parameters established by the World Health Organization, besides that pies had 62,5 % acceptability in terms of taste, 68,75 % in texture, 50 % in smell and 56,25 % in terms of color. With this study pastry recipes were created with green plantain and orito contributing as variety in Ecuadorian cuisine and it is nutritious food in the daily diet. It is recommended to the bakers to store the products in covered containers to prevent texture changes

The Impact of Additive Manufacturing on Supply Chain Management from a System Dynamics Model-Scenario: Traditional, Centralized, and Distributed Supply Chain

[EN] In order to describe the impact that the appropriation of additive manufacturing (AM) has on the supply chain (SC), a validated system dynamics model representing vectorially multiple products and multiple demands in different periods was used as a basis to apply to a case study of medical implant manufacturing, configuring three chain scenarios: 1. traditional supply chain with subtractive manufacturing, 2. centralized supply chain with additive manufacturing, and 3. decentralized supply chain with additive manufacturing. It was possible to notice that the production time is longer in additive manufacturing compared to traditional manufacturing and the cycle time and total demand closure were lower in traditional manufacturing. In addition, it was observed that the AM performance is significantly better in conditions of lower demand, which can be attributed to the characteristics of customization and small batches that this type of production approach implies.Nuñez Rodriguez, J.; Andrade Sosa, HH.; Villarreal-Archila, SM.; Ortiz Bas, Á. (2022). The Impact of Additive Manufacturing on Supply Chain Management from a System Dynamics Model-Scenario: Traditional, Centralized, and Distributed Supply Chain. Processes. 10(12):1-38. https://doi.org/10.3390/pr10122489138101

Myofibroblasts and increased angiogenesis contribute to periapical cystic injury containment and repair

Myofibroblasts (MF) and angiogenesis are important factors in the development and expansion of cystic lesions, where these cells secrete growth factors and proteases, stimulating angiogenesis, matrix deposition and cell migration, affecting the growth of these periapicopathies. The present study aimed to evaluate the immunohistochemical expression of CD34 and ?-SMA in radicular cysts (RC) and residual radicular cysts (RRC), with the purpose of contributing to a better understanding of the expansion and progression of these periapical lesions. The present study os a descriptive, quantitative and comparative analysis of positive CD34 and ?-SMA immunohistochemical expressions in 30 RC and 30 RRC specimens. ?-SMA expression was evaluated in the fibrous capsule of the lesions, at 100x magnification below the epithelial lining. A total of 10 higher immunostaining fields were selected and subsequently, positive cells were quantified at 400x magnification, averaged per field. Regarding the angiogenic index, immuno-labeled microvessel counts for the anti-CD34 antibody were performed in 10 fields at 200x magnification. Statistically significant differences regarding ?-SMA immunostaining were observed (p = 0.035), as well as a correlation between ?-SMA versus CD34 (p = 0.004) in RRC. However, the angiogenic index obtained by immunostaining for CD34 indicated no statistical difference between lesions. Intense inflammatory infiltrates were predominant in RC, while mild and moderate degrees were more commonly observed in RRC (p <0.001). Intense inflammatory infiltrates were also more often noted in larger RRC (p = 0.041). Inflammatory infiltrates showed no significant correlation with ?-SMA and CD34 immunostaining. The results indicate that the significant correlation found between the presence of MF and the angiogenic index are related to the repair process in RRC

Immunoexpression of CXCL12 and CXCR4 in sporadic and Gorlin-Goltz syndrome-related odontogenic keratocysts

Differences in the pathogenesis and biological behavior of sporadic and Gorlin-Goltz syndrome-related odontogenic keratocysts (OKCs) have been reported, but the underlying mechanisms are not fully elucidated. Chemokine CXCL12 and its main receptor CXCR4

Resultados preliminares del aprovechamiento con animales de una pastura de agropiros canadienses en el campo experimental Potrok Aike

Durante el año 2013 se instaló en el Campo Experimental Potrok Aike una pastura de agropiros de origen canadienses: Agropyron intermedium (Agropiro intermedio) y Agropyron trichophorum (Agropiro pubescente) en una superficie de 40 ha.EEA Santa CruzFil: Andrade, Miguel Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Vargas, Paola Patricia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Culun, Victor Pascual. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Campo Anexo Potrok Aike; ArgentinaFil: Nuñez, Mario Del Corazón De. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Campo Anexo Potrok Aike; Argentin

Th17 Responses Are Not Induced in Dextran Sodium Sulfate Model of Acute Colitis

Dextran sodium sulfate (DSS) is a widely used chemical model for inflammatory bowel disease (IBD). It is thought that imbalances in the T helper (Th) cell subsets contribute to IBD. Recent studies suggest that the acute DSS-colitis model is polarized toward a Th1/Th17 profile based on RT-PCR analysis of colonic tissues. In the current study we determined whether colonic Th cells from DSS-colitis mice were skewed toward the Th17 profile. Mice were treated with 5% DSS for 7 days and colonic T cells isolated and examined for production of IFN-γ (Th1 cell), IL-4 (Th2 cell) and IL-17 (Th17 cell) by intracellular flow cytometry. We found that the percentage of colonic Th17 cells were similar to non-treated controls but the percentage of Th1 cells were elevated in DSS-colitis mice. These results suggest that in the acute DSS-colitis model the colonic Th cells exhibit a Th1 profile and not a Th17 profile

Salivary gland tumors : a 13-year clinicopathologic retrospective study in a Brazilian northeast population

The present study aimed to evaluate the clinicopathologic features of salivary gland tumors (SGTs) in a Brazillian northeast population. A retrospective descriptive cross-sectional study was performed (1995-2009). All cases of SGTs diagnosed in a priva

Informe experiencia Creep Feeding: Campo Experimental Potrok Aike. Parte I.

La ganadería ovina es la actividad agropecuaria más importante en la Provincia de Santa Cruz. En los últimos años, la caída de la receptividad de los campos de las distintas áreas por un efecto combinado de variaciones en los balances hídricos y el deterioro progresivo del recurso forrajero, afectó la producción de los sistemas y provocó la disminución del stock ganadero ovino. Esto, sumado a los bajos porcentajes de señalada, redunda en una disminución de los corderos logrados. Frente a este escenario, se observó un incremento en el nivel de adopción de distintas técnicas de suplementación en la estepa magallánica, con el objetivo de atenuar el impacto de la caída de la productividad del sistema y minimizar el impacto de la disminución del forraje disponible durante la época invernal. Una técnica factible de ser utilizada durante los períodos de sequía y/o escasez de forraje en la Patagonia, cuando la producción de leche y el estado de las ovejas está comprometido (O’ Connell, 2004), y hay una competencia entre madres y corderos por el alimento, es el Creep Feeding (Villar, 2009). Esta práctica consiste en suplementar los corderos al pie de la madre, con alimento concentrado en lugares donde los corderos tienen fácil acceso, pero queda fuera del alcance de las ovejas.EEA Santa CruzFil: Andrade, Miguel Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Vargas, Paola Patricia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Gallardo, Rodrigo Martin. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Nuñez, Mario Del Corazón De. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz. Campo Anexo Potrok Aike; ArgentinaFil: Clifton, Guillermo Raimundo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; ArgentinaFil: Inchausti, C. Balanceados Crecer S.A.; Argentin