Estudio comparativo de registro de posicion condilar en sujetos (sanos) con y sin deprogramacion neuromuscular.

62 p.Determinar el rol de la deprogramación neuromuscular en la posición condilar en pacientes sanos, fue el principal propósito del presente estudio. Se compararon, además, dos técnicas de registro de relación céntrica, la técnica convencional y la técnica Power centric, descrita por Roth, indicada principalmente en pacientes asintomáticos. Para la determinación de la posición condilar se utilizó el indicador de posición condilar de Panadent (CPI), como medio de evaluación. Se seleccionó una muestra de 15 estudiantes de odontología, sanos. Con los modelos obtenidos se realizó el montaje en MIC, como el punto cero de la investigación. Se obtuvieron cuatro registros de relación céntrica por paciente, cada uno de ellos fue repetido tres veces. RC1: sin deprogramación neuromuscular, tilizando la técnica de registro convencional. RC2: sin deprogramación neuromuscular, utilizando la técnica de registro Power centric. RC3: previa deprogramación con de tórulas de algodón, utilizando la técnica de registro convencional. RC4: previa deprogramación con a la nterposición de tórulas de algodón, utilizando la técnica de registro Power centric. Se realizó un análisis de varianza (ANOVA) que permitió la comparación de los métodos y la evaluación del rol de la deprogramación y la importancia de la técnica de registro en pacientes sanos. Los resultados obtenidos permitieron concluir que: La deprogramación anterior con tórulas de algodón en pacientes sanos, no es fundamental para el adecuado registro y la correcta ubicación condilar. Sin embargo la deprogramación es recomendada ya que disminuye y atenúa la tensión muscular como factores anexos que dificultan el correcto registro de relación céntrica. De las técnicas utilizadas, en este estudio, para el registro de relación céntrica en pacientes sanos, la elección de una de ellas para el correcto registro y ubicación condilar es un factor no trascendente en el resultado final. El desplazamiento condilar desde MIC a RC, en ambas articulaciones, presenta una tendencia postero y postero superior lo que reafirma el hecho que tanto las técnicas como los procesos de manipulación apuntan en la correcta dirección. El desplazamiento condilar desde MIC a RC, en sentido trasversal fue mínimo lo que valida ambas técnicas utilizadas. El desplazamiento condilar desde MIC a RC, en ambas articulaciones, en magnitud y en sentido no es simétrico. Lo que puede ser debido a factores no considerados en este estudio, como el análisis esqueletal, función masticatoria, capacidad muscular, entre otros. Palabras claves

Understanding the precipitation processes of carbonate deposits relate to the postmagmatic history of Laguna Timone, pali aike volcanic field, chilean extra-andean Patagonia

Orientadora: Profa. Dra. Anelize Manuela Bahniuk RumbelspergerDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências da Terra, Programa de Pós-Graduação em Geologia. Defesa : Curitiba, 30/09/2021Inclui referências: p. 99-124Resumo: A Patagonia Austral Chilena é um dos poucos locais em que se pode encontrar precipitação de carbonatos em uma cratera maar. A cratera maar da Laguna Timone está localizada na região, mais precisamente no Campo Vulcânico de Pali-Aike, um complexo vulcânico-tectônico do Quaternário presente no sul da Patagonia, com fonte de magmatismo associada ao fluxo da astenosfera sub-slab através das janelas de laje. A Laguna Timone é preenchida por um corpo d'água com alta salinidade e alcalinidade, com baixa temperatura e rico em minerais como o cálcio, magnésio, sódio, potássio, nitrato, nitrito, sulfato e fosfato. A precipitação média anual baixa, em torno de 200 mm, e os ventos fortes são responsáveis pelas altas taxas de evaporação e pelo déficit hídrico anual. Microbialitas retrabalhadas, com crosta carbonática, argilominerais e atividade microbiana são observados em regiões próximas da costa da lagoa. Os carbonatos, sedimentados e o biofilme forão analisados e caracterizados. A mineralogia das microbialitas e da crosta era formada por calcita com valores de delta13C VPDB (-0.43 ‰ to 2.50 ‰) que indicam a ocorrência de processos físico-químicos e bioquímicos nem sua precipitação. Enquanto que os valores de delta18O VPDB (-6.52 ‰ to 2.28 ‰) estão associados com os processos de evaporação e com as influências meteóricas. A fração de argilominerais do sedimento é composta, em sua maior parte, por ilita, clorita e esmectita. Apartir das análises HRTEM pode-se relacionar o amorfo Mg-argila aos cristais de calcita. A biodiversidade bacteriana e fúngica foi examinada usando o sequenciamento Illumina do PCR-amplificado rRNA 16s e genes ITS do DNA total extraído. Os resultados apresentam que os filos Proteobacteria, Bacteroidetes, Cyanobacteria e Verrucomicrobia dominaram as comunidades bacterianas e os gêneros Pseudomonas, Rhodobacter, Brevundimonas, e Oscillatoria estão relacionados com a precipitação de carbonato registrada em condições ambientais similares. Em relação às comunidades fúngicas, os gêneros predominantes foram os de Ilyonectria, Tetracladium, Thelebolus, Acrostalagmus e Plectosphaerella, e tem sido encontrada no ambiente Antártico. As bactérias foram isoladas do biofilme e tapetes microbiais e um isolado bacteriano, capaz de precipitar o carbonato de cálcio in vitro, foi obtido. Os cristais precipitados foram analisados e os resultados foram consistentes com a mineralogia da rocha carbonática. Os precipitados estão associados com os tapetes microbianos, permitindo a formação de organominerais. Como conclusão, a combinação do intemperismo de silicato e processos físicoquímicos, bioquímicos e climáticos levam a precipitação de carbonatos.Abstract: The Chilean Patagonia Austral is only a few sites where carbonate precipitates in a maar crater. The Laguna Timone maar crater is situated in the Pali Aike Volcanic Field, a Quaternary volcano-tectonic complex in southern Patagonia, where the source of magmatism is associated with sub-slab asthenosphere flow through slab windows. Laguna Timone is filled by a body of water with high salinity and alkalinity, cold, and rich in calcium, magnesium, sodium, potassium, nitrate, nitrite, sulfate, and phosphates. The annual precipitation is around 200 mm, and the strong winds are responsible for high evaporation rates per year. Microbialites, carbonate crust, mud, and microbial activity are documented near the shore of the lagoon. The carbonates, sediment, and biofilm were analyzed and characterized. The mineralogy of reworked microbialites and crust was calcite. The delta13C VPDB (-0.43 ‰ to 2.50 ‰) values indicate physico-chemical and biochemical processes in the precipitation. The delta18O VPDB values (-6.52 ‰ to 2.28 ‰) are associate with evaporation processes and meteoric influences. The clay fraction of sediment was characterized and is dominated by illite,chlorite, and smectite. HRTEM analysis shows that the amorphous Mg-clay has a relation with calcite crystals. Bacterial and fungal biodiversity was examined using Illumina sequencing of PCR-amplified 16s rRNA and ITS genes from total extracted DNA. The results show that the Proteobacteria, Bacteroidetes, Cyanobacteria, and Verrucomicrobia phyla dominated the bacterial communities. Pseudomonas, Rhodobacter, Brevundimonas, and Oscillatoria genera found in the samples have been associated with carbonate precipitation recorded under similar environmental conditions. Regarding fungal communities, Ilyonectria, Tetracladium, Thelebolus, Acrostalagmus, and Plectosphaerella were the predominant genders determined in samples found in the Antarctic environment. Bacteria were isolated from biofilm and mats and a bacterial isolate capable of in vitro precipitate calcium carbonate in vitro was obtained. The crystals precipitated were analyzed and the results were consistent with mineralogy of carbonate rock. The precipitates are associated with microbial mats allowing organomineral formation. In conclusion, the combination of silicate weathearing and physicochemical, biochemical and climate processes lead tocarbonate precipitation

A hypoperfusion context may aid to interpret hyperlactatemia in sepsis-3 septic shock patients: a proof-of-concept study

__Background:__ Persistent hyperlactatemia is particularly difficult to interpret in septic shock. Besides hypoperfusion, adrenergic-driven lactate production and impaired lactate clearance are important contributors. However, clinical recognition of different sources of hyperlactatemia is unfortunately not a common practice and patients are treated with the same strategy despite the risk of over-resuscitation in some. Indeed, pursuing additional resuscitation in non-hypoperfusion-related cases might lead to the toxicity of fluid overload and vasoactive drugs. We hypothesized that two different clinical patterns can be recognized in septic shock patients through a multimodal perfusion monitoring. Hyperlactatemic patients with a hypoperfusion context probably represent a more severe acute circulatory dysfunction, and the absence of a hypoperfusion context is eventually associated with a good outcome. We performed a retrospective analysis of a database of septic shock patients with persistent hyperlactatemia after initial resuscitation. __Results:__ We defined hypoperfusion context by the presence of a ScvO2 < 70%, or a P(cv-a)CO2 ≥6 mmHg, or a CRT ≥4 s together with hyperlactatemia. Ninety patients were included, of whom seventy exhibited a hypoperfusion-related pattern and 20 did not. Although lactate values were comparable at baseline (4.8 ± 2.8 vs. 4.7 ± 3.7 mmol/L), patients with a hypoperfusion context exhibited a more severe circulatory dysfunction with higher vasopressor requirements, and a trend to longer mechanical ventilation days, ICU stay, and more rescue therapies. Only one of the 20 hyperlactatemic patients without a hypoperfusion context died (5%) compared to 11 of the 70 with hypoperfusion-related hyperlactatemia (16%). __Conclusions:__ Two different clinical patterns among hyperlactatemic septic shock patients may be identified according to hypoperfusion context. Patients with hyperlactatemia plus low ScvO2, or high P(cv-a)CO2, or high CRT values exhibited a more severe circulatory dysfunction. This provides a starting point to launch further prospective studies to confirm if this approach can lead to a more selective resuscitation strategy

Critical and prospective analysis of online education in pandemic and post-pandemic contexts: Digital tools and resources to support teaching in synchronous and asynchronous learning modalities

Humanity, prior to the COVID-19 pandemic, was already in the process of a gradual cultural transition between modernity and postmodernity. The rapid pace of scientific and technological advances has led humans towards a progressive adaptation, as they develop new ways to confront and to solve their problems. In the exceptional context of the pandemic, people and institutions have faced a sudden need to readapt their ways of life and their means of communication. In education, the need to migrate from traditional classrooms to online systems was urgent, and the shift required digital tools and resources to support teaching. This theoretical article aims to analyze the disruption in the educational context and to detail the adaptations that may contribute to the effectiveness of educational processes. Moreover, it discusses the pedagogical, methodological, didactic, and evaluative aspects of the change in education. The article also proposes some guidelines for learning on both synchronous and asynchronous platforms. The trends associated with these changes are analyzed in order to offer a perspective on education in the post-pandemic world

Feedback from the teaching report in an intercultural context in a pandemic situation

El presente manuscrito analiza el concepto de retroalimentación académica y cómo este proceso se lleva a cabo en contexto de educación en línea y pandemia desde una perspectiva intercultural. Presenta un análisis desde la perspectiva de los formadores de formadores donde se plasma la experiencia del docente y la realidad del estudiantado y las brechas que la educación a distancia a evidenciado desde la evaluación formativa y su potencial en el ámbito educativo. Se concluye que la concepción de retroalimentación sigue siendo muy conservadora, con pocos indicios relacionados con la mayéutica clásica. Se trata de una investigación cualitativa tipo artículo

Signals that determine internationalisation

Master's thesis Business Administration BE501 - University of Agder 2017International franchising business model is extensively and increasingly being used by entrepreneurs and firms seeking growth through geographic expansion. Thus, continued research efforts are needed to help entrepreneurs make wise choices when attracting investors into the business. Two popular theories (agency and resource scarcity) have been the basis on which international franchising has been explained. In this research, we expand on existing literature by focusing on signaling theory, answering the question “what are the signals that determine international franchising?” We answer this research question empirically, using cross-sectional data on a sample of 4150 business format franchise systems from 5 industries in the United States in 2016. The findings from this research show that there exists a positive relationship between a firm’s listing status, earning claim (Item 19), and international franchise association membership. Royalty rate and company owned units were not found to be significant with internationalisation. Another striking revelation from the research shows that franchisee in different industry react to signals differently. Keywords; Franchising, Internationalisation, Signalin

Prediction of the Limiting Flux and Its Correlation with the Reynolds Number during the Microfiltration of Skim Milk Using an Improved Model

Limiting flux (JL) determination is a critical issue for membrane processing. This work presents a modified exponential model for JL calculation, based on a previously published version. Our research focused on skim milk microfiltrations. The processing variables studied were the crossflow velocity (CFV), membrane hydraulic diameter (dh), temperature, and concentration factor, totaling 62 experimental runs. Results showed that, by adding a new parameter called minimum transmembrane pressure, the modified model not only improved the fit of the experimental data compared to the former version (R2 \u3e 97.00%), but also revealed the existence of a minimum transmembrane pressure required to obtain flux (J). This result is observed as a small shift to the right on J versus transmembrane pressure curves, and this shift increases with the flow velocity. This fact was reported in other investigations, but so far has gone uninvestigated. The JL predicted values were correlated with the Reynolds number (Re) for each dh tested. Results showed that for a same Re; JL increased as dh decreased; in a wide range of Re within the turbulent regime. Finally, from dimensionless correlations; a unique expression JL = f (Re, dh) was obtained; predicting satisfactorily JL (R2 = 84.11%) for the whole set of experiments

Relación entre funcionalidad motriz y factores antropométricos de riesgo cardio metabólico en bomberos de la región de Valparaíso, Chile

[ES] Objetivo: El objetivo de este estudio fue describir la funcionalidad motriz de bomberos por medio de la batería Functional Movement Screen (FMS), e identificar su relación con factores antropométricos de riesgo cardiovascular (RC). Método: Participaron un total de 139 bomberos, de los cuales 122 corresponden a hombres y 17 a mujeres pertenecientes a 16 compañías de bomberos de la comuna de Valparaíso, Chile. Se aplicó la batería de evaluación FMS y se tomaron medidas de perímetro cintura (PC), índice de masa corporal (IMC) y el índice cintura-estatura (ICE). Resultados: Para las mujeres se reportaron correlaciones bajas entre el FMS y las variables antropométricas de RC, mientras que para los hombres estas correlaciones fueron significativas y negativas entre FMS y las variables PC, ICE e IMC (r = -,37, p < ,001; r = -,34, p < ,001; –-,40, p < ,002), respectivamente. El 64,02% de los participantes en ICE se clasificó en un alto RC (e» ,50) y en el IMC un 73% en las categorías de sobrepeso y obesidad. De acuerdo con los resultados de la evaluación FMS, el 45,33% de los participantes presentan una baja funcionalidad motriz. Conclusión: La baja funcionalidad motriz y los elevados valores en parámetros antropométricos de RC son factores que debería preocupar a comunidades como las compuestas por bomberos, quienes desarrollan labores de alta exigencia física y mental, en condiciones extremas que muchas veces pueden poner en peligro la salud de los propios voluntariosS