"That's what social media is all about - engagement" : Hur märkesinnehavare använder visuell storytelling på Instagram för att skapa märkesgemenskaper

Utvecklingen av sociala medier såsom t.ex. Facebook och Instagram har inneburit nya möjligheter att kommunicera sin livsstil och sina personliga val, som överskrider såväl kulturella som geografiska gränser. Nya gemenskaper skapas. Detta får betydelse för hur konsumenter kommunicerar med varandra samt hur märkesinnehavarna kommunicerar med sina kunder. Syftet med min studie är att undersöka hur en märkesinnehavare inom mode använder sociala medier, i detta fall Instagram, i sin kommunikation med kunderna för att skapa engagemang kring sitt varumärke. Aktuell forskning visar att värde i varumärket skapas genom en ömsesidig kommunikation mellan märkesinnehavaren och konsumenterna. Kommunikationen sker både mellan märkesinnehavare och konsumenter samt mellan konsumenterna i en märkesgemenskap. Storytelling är ett verksamt medel i denna meningsskapande process. En semiotisk analys användes för att analysera bilderna och hur de bidrar till märkets storytelling. Resultatet visar att Instagram ger märkesinnehavare och konsumenter möjlighet att gemensamt skapa värde. De tekniska funktionerna i applikationen gör det lätt för märkesinnehavare att interagera med sina konsumenter och skapa en dynamisk märkesgemenskap. På Sabo Skirts instagramkonto är märkesinnehavaren och följarna tillsammans märkets författare. Följarna använder kläderna och ger dem betydelse i sin egen vardag samtidigt som märkesinnehavaren skapar möjligheter för dem att synas på ett instagramkonto med 1,5 miljoner följare. Detta kan tolkas med hjälp av teorin uses and gratifications som säger att användningen av media alltid är målinriktad. Människor väljer aktivt media efter vilka deras behov är och hur väl användningen tillfredsställer dessa behov.

Exposing extinction risk analysis to pathogens: Is disease just another form of density dependence?

In the United States and several other countries., the development of population viability analyses (PVA) is a legal requirement of any species survival plan developed for threatened and endangered species. Despite the importance of pathogens in natural populations, little attention has been given to host-pathogen dynamics in PVA. To study the effect of infectious pathogens on extinction risk estimates generated from PVA, we review and synthesize the relevance of host-pathogen dynamics in analyses of extinction risk. We then develop a stochastic, density-dependent host-parasite model to investigate the effects of disease on the persistence of endangered populations. We show that this model converges on a Ricker model of density dependence under a suite of limiting assumptions, including. a high probability that epidemics will arrive and occur. Using this modeling framework, we then quantify: (1) dynamic differences between time series generated by disease and Ricker processes with the same parameters; (2) observed probabilities of quasi-extinction for populations exposed to disease or self-limitation; and (3) bias in probabilities of quasi-extinction estimated by density-independent PVAs when populations experience either form of density dependence. Our results suggest two generalities about the relationships among disease, PVA, and the management of endangered species. First, disease more strongly increases variability in host abundance and, thus, the probability of quasi-extinction, than does self-limitation. This result stems from the fact that the effects and the probability of occurrence of disease are both density dependent. Second, estimates of quasi-extinction are more often overly optimistic for populations experiencing disease than for those subject to self-limitation. Thus, although the results of density-independent PVAs may be relatively robust to some particular assumptions about density dependence, they are less robust when endangered populations are known to be susceptible to disease. If potential management actions involve manipulating pathogens, then it may be useful to. model disease explicitly.

Remoção de corantes utilizando tensoativos: extração por ponto de nuvem e floculação iônica

The textile sector is one of the main contributors to the generation of industrial wastewaters due to the use of large volumes of water, which has a high organic load content. In these, it is observed to the presence of dyes, surfactants, starch, alcohols, acetic acid and other constituents, from the various processing steps of the textiles. Hence, the treatment of textile wastewater becomes fundamental before releasing it into water bodies, where they can cause disastrous physical-chemical changes for the environment. Surfactants are substances widely used in separation processes and their use for treating textile wastewaters was evaluated in this research by applying the cloud point extraction and the ionic flocculation. In the cloud point extraction was used as surfactant nonylphenol with 9.5 ethoxylation degree to remove reactive dye. The process evaluation was performed in terms of temperature, surfactant and dye concentrations. The dye removal reached 91%. The ionic flocculation occurs due to the presence of calcium, which reacts with anionic surfactant to form insoluble surfactants capable of attracting the organic matter by adsorption. In this work the ionic flocculation using base soap was applied to the treatment of synthetic wastewater containing dyes belonging to three classes: direct, reactive, and disperse. It was evaluated by the influence of the following parameters: surfactant and electrolyte concentrations, stirring speed, equilibrium time, temperature, and pH. The flocculation of the surfactant was carried out in two ways: forming the floc in the effluent itself and forming the floc before mixing it to the effluent. Removal of reactive and direct dye, when the floc is formed into textile effluent was 97% and 87%, respectively. In the case where the floc is formed prior to adding it to the effluent, the removal to direct and disperse dye reached 92% and 87%, respectively. These results show the efficience of the evaluated processes for dye removal from textile wastewaters.

Modificação do eletrodo AWS E7018 com adição de filmes finos externos de PVC e Al, para soldagem de aço C-Mn

This paper suggests modifications in coating of electrodes providing an alternative for execution of welding with low hydrogen electrode AWS E7018 without having to dry it, reducing thus the cost and time of manufacturing of high resistance welds. The welds in this research were developed with basic coated electrodes (hygroscopic) – SMAW process – externally painted with aluminum spray paint for high temperatures or wrapped with thin plastic films (PVC) and aluminum foil films used commonly for food protection. The basic premise is that establishing a barrier between the atmosphere and the electrode coating could reduce the effects of high hygroscopicity presented by coatings of low hydrogen, minimizing this way the main source of supply of hydrogen to the fusion pool during welding. It is also expected that the addition of new materials from the electrode coating to the fusion pool would induce metallurgical changes in the deposited metal and, as a consequence, modifications in its mechanical properties. This research dealt with measuring the dissolved hydrogen in the deposited metal after welding with modified electrodes, evaluating the influence of these changes in the produced microstructures and in the mechanical properties of the resulting weld, and comparing the obtained results with the standard welding procedures and with the recently developed waterproof electrodes. The results obtained in most samples welded with modified electrodes showed increased mechanical resistance and increased tenacity due to the increased percentage of acicular ferrite in metal deposited without significant elevation of hardness, when compared with the traditional welding with AWS E7018 electrode and with ELBRÁS BRH4R waterproof electrode. The diffusing hydrogen measured in the modified electrodes was kept inside the parameters defined by international codes.

Modificação do eletrodo AWS E7018 com adição de filmes finos externos de PVC e Al, para soldagem de aço C-Mn

This paper suggests modifications in coating of electrodes providing an alternative for execution of welding with low hydrogen electrode AWS E7018 without having to dry it, reducing thus the cost and time of manufacturing of high resistance welds. The welds in this research were developed with basic coated electrodes (hygroscopic) – SMAW process – externally painted with aluminum spray paint for high temperatures or wrapped with thin plastic films (PVC) and aluminum foil films used commonly for food protection. The basic premise is that establishing a barrier between the atmosphere and the electrode coating could reduce the effects of high hygroscopicity presented by coatings of low hydrogen, minimizing this way the main source of supply of hydrogen to the fusion pool during welding. It is also expected that the addition of new materials from the electrode coating to the fusion pool would induce metallurgical changes in the deposited metal and, as a consequence, modifications in its mechanical properties. This research dealt with measuring the dissolved hydrogen in the deposited metal after welding with modified electrodes, evaluating the influence of these changes in the produced microstructures and in the mechanical properties of the resulting weld, and comparing the obtained results with the standard welding procedures and with the recently developed waterproof electrodes. The results obtained in most samples welded with modified electrodes showed increased mechanical resistance and increased tenacity due to the increased percentage of acicular ferrite in metal deposited without significant elevation of hardness, when compared with the traditional welding with AWS E7018 electrode and with ELBRÁS BRH4R waterproof electrode. The diffusing hydrogen measured in the modified electrodes was kept inside the parameters defined by international codes.

Análise da biorremediação de compostos monoaromáticos em água através da pseudomonas aeruginosa

The monoaromatic compounds are toxic substances present in petroleum derivades and used broadly in the chemical and petrochemical industries. Those compounds are continuously released into the environment, contaminating the soil and water sources, leading to the possible unfeasibility of those hydrous resources due to their highly carcinogenic and mutagenic potentiality, since even in low concentrations, the BTEX may cause serious health issues. Therefore, it is extremely important to develop and search for new methodologies that assist and enable the treatment of BTEX-contaminated matrix. The bioremediation consists on the utilization of microbial groups capable of degrading hydrocarbons, promoting mineralization, or in other words, the permanent destruction of residues, eliminating the risks of future contaminations. This work investigated the biodegradation kinetics of water-soluble monoaromatic compounds (benzene, toluene and ethylbenzene), based on the evaluation of its consummation by the Pseudomonas aeruginosa bacteria, for concentrations varying from 40 to 200 mg/L. To do so, the performances of Monod kinetic model for microbial growth were evaluated and the material balance equations for a batch operation were discretized and numerically solved by the fourth order Runge-Kutta method. The kinetic parameters obtained using the method of least squares as statistical criteria were coherent when compared to those obtained from the literature. They also showed that, the microorganism has greater affinity for ethylbenzene. That way, it was possible to observe that Monod model can predict the experimental data for the individual biodegradation of the BTEX substrates and it can be applied to the optimization of the biodegradation processes of toxic compounds for different types of bioreactors and for different operational conditions.

Análise da biorremediação de compostos monoaromáticos em água através da pseudomonas aeruginosa

The monoaromatic compounds are toxic substances present in petroleum derivades and used broadly in the chemical and petrochemical industries. Those compounds are continuously released into the environment, contaminating the soil and water sources, leading to the possible unfeasibility of those hydrous resources due to their highly carcinogenic and mutagenic potentiality, since even in low concentrations, the BTEX may cause serious health issues. Therefore, it is extremely important to develop and search for new methodologies that assist and enable the treatment of BTEX-contaminated matrix. The bioremediation consists on the utilization of microbial groups capable of degrading hydrocarbons, promoting mineralization, or in other words, the permanent destruction of residues, eliminating the risks of future contaminations. This work investigated the biodegradation kinetics of water-soluble monoaromatic compounds (benzene, toluene and ethylbenzene), based on the evaluation of its consummation by the Pseudomonas aeruginosa bacteria, for concentrations varying from 40 to 200 mg/L. To do so, the performances of Monod kinetic model for microbial growth were evaluated and the material balance equations for a batch operation were discretized and numerically solved by the fourth order Runge-Kutta method. The kinetic parameters obtained using the method of least squares as statistical criteria were coherent when compared to those obtained from the literature. They also showed that, the microorganism has greater affinity for ethylbenzene. That way, it was possible to observe that Monod model can predict the experimental data for the individual biodegradation of the BTEX substrates and it can be applied to the optimization of the biodegradation processes of toxic compounds for different types of bioreactors and for different operational conditions.

Remoção de fenol de efluentes aquosos utilizando floculação iônica

Oil exploration is one of the most important industrial activities of modern society. Despite its derivatives present numerous applications in industrial processes, there are many undesirable by-products during this process, one of them is water separated from oil, called water production, it is constituted by pollutants difficult to degrade. In addition, the high volume of generated water makes its treatment a major problem for oil industries. Among the major contaminants of such effluents are phenol and its derivatives, substances of difficult natural degradation, which due their toxicity must be removed by a treatment process before its final disposal. In order to facilitate the removal of phenol in wastedwater from oil industry, it was developed an extraction system by ionic flocculation with surfactant. The ionic flocculation relies on the reaction of carboxylate surfactant and calcium íons, yielding in an insoluble surfactant that under stirring, aggregates forming floc capable of attracting the organic matter by adsorption. In this work was used base soap as ionic surfactant in the flocculation process and evaluated phenol removal efficiency in relation to the following parameters: surfactant concentration, phenol, calcium and electrolytes, stirring speed, contact time, temperature and pH. The flocculation of the surfactant occurred in the effluent (initial phenol concentration = 100 ppm) reaching 65% of phenol removal to concentrations of 1300 ppm and calcium of 1000 ppm, respectively, at T = 35 °C, pH = 9.7, stirring rate = 100 rpm and contact time of 5 minutes. The permanence of the flocs in an aqueous medium promotes desorption of the phenol from the flake surface to the solution, reaching 90% of desorption at a time of 150 minutes, and the study of desorption kinetics showed that Lagergren model of pseudo-first order was adequate to describe the phenol desorption. These results shows that the process may configure a new alternative of treatment in regard the removal of phenol of aqueous effluent of oil industry.

Remoção de fenol de efluentes aquosos utilizando floculação iônica

Oil exploration is one of the most important industrial activities of modern society. Despite its derivatives present numerous applications in industrial processes, there are many undesirable by-products during this process, one of them is water separated from oil, called water production, it is constituted by pollutants difficult to degrade. In addition, the high volume of generated water makes its treatment a major problem for oil industries. Among the major contaminants of such effluents are phenol and its derivatives, substances of difficult natural degradation, which due their toxicity must be removed by a treatment process before its final disposal. In order to facilitate the removal of phenol in wastedwater from oil industry, it was developed an extraction system by ionic flocculation with surfactant. The ionic flocculation relies on the reaction of carboxylate surfactant and calcium íons, yielding in an insoluble surfactant that under stirring, aggregates forming floc capable of attracting the organic matter by adsorption. In this work was used base soap as ionic surfactant in the flocculation process and evaluated phenol removal efficiency in relation to the following parameters: surfactant concentration, phenol, calcium and electrolytes, stirring speed, contact time, temperature and pH. The flocculation of the surfactant occurred in the effluent (initial phenol concentration = 100 ppm) reaching 65% of phenol removal to concentrations of 1300 ppm and calcium of 1000 ppm, respectively, at T = 35 °C, pH = 9.7, stirring rate = 100 rpm and contact time of 5 minutes. The permanence of the flocs in an aqueous medium promotes desorption of the phenol from the flake surface to the solution, reaching 90% of desorption at a time of 150 minutes, and the study of desorption kinetics showed that Lagergren model of pseudo-first order was adequate to describe the phenol desorption. These results shows that the process may configure a new alternative of treatment in regard the removal of phenol of aqueous effluent of oil industry.

Cuerpos y estética : de deportistas y milicianos. Los movimientos juveniles judíos de resistencia en la década del 30 en la República Argentina

Dentro de la experiencia de investigación que a partir del año 2013 me toca dirigir, se encuentra una línea particular, relacionada con la estética y los cuerpos, que sugiere la indagación de agrupamientos particulares, relacionados con las prácticas corporales con sentido estético y artístico. En ese sentido, para nuestro equipo, se torna de interés reconocer, entre otros asuntos, como a partir de determinadas construcciones de la sensibilidad corporal, algunos grupos adquieren identidades propias, originales, muchas veces para la generación de nuevas tendencias culturales y otras en respuesta a contextos que desafiaron su integridad y núcleo más profundo. Esta presentación se propone indagar algunos de esos contextos, en este caso, la construcción de una cultura corporal propia de los jóvenes judíos en la década del 30 en nuestro país. La Segunda guerra Mundial y la vida de los Jóvenes Judíos Europeos en ese período, tuvo una fuerte relación con las actividades: Deportivas, militantes, de la Resistencia política y muchas veces, de militancia en la Resistencia armada. La década del 30 fue la antesala de esa construcción, como si forjar templanza en la competencia deportiva fuera el preludio de lo que la historia adivinaba para la década siguiente. ¿Cómo se estructuraron sus estéticas corporales, sus inclinaciones de moda e indumentaria, y relaciones sociales? ¿Cómo ?saltan? de las canchas deportivas Macabeas o de la Juventud Socialista, a la decisión de involucrar sus cuerpos en la defensa de identidades, culturas, Historias? Estos interrogantes, buscan respuestas en algunos principios de la cultura Judía europea y su culto a la vida. Asimismo, en continuidad con un artículo y ponencia anteriormente presentado en este congreso, se inicia una tarea de comparación con la imagen corporal y marcial del soldado alemán, típica y coincidente con muchos modos del ser corporal en la formación militar europea y la de algunos grupos juveniles de la época, en particular, la de jóvenes júdios y deportistas en la República Argentina

Cuerpos y estética : de deportistas y milicianos. Los movimientos juveniles judíos de resistencia en la década del 30 en la República Argentina

Dentro de la experiencia de investigación que a partir del año 2013 me toca dirigir, se encuentra una línea particular, relacionada con la estética y los cuerpos, que sugiere la indagación de agrupamientos particulares, relacionados con las prácticas corporales con sentido estético y artístico. En ese sentido, para nuestro equipo, se torna de interés reconocer, entre otros asuntos, como a partir de determinadas construcciones de la sensibilidad corporal, algunos grupos adquieren identidades propias, originales, muchas veces para la generación de nuevas tendencias culturales y otras en respuesta a contextos que desafiaron su integridad y núcleo más profundo. Esta presentación se propone indagar algunos de esos contextos, en este caso, la construcción de una cultura corporal propia de los jóvenes judíos en la década del 30 en nuestro país. La Segunda guerra Mundial y la vida de los Jóvenes Judíos Europeos en ese período, tuvo una fuerte relación con las actividades: Deportivas, militantes, de la Resistencia política y muchas veces, de militancia en la Resistencia armada. La década del 30 fue la antesala de esa construcción, como si forjar templanza en la competencia deportiva fuera el preludio de lo que la historia adivinaba para la década siguiente. ¿Cómo se estructuraron sus estéticas corporales, sus inclinaciones de moda e indumentaria, y relaciones sociales? ¿Cómo ?saltan? de las canchas deportivas Macabeas o de la Juventud Socialista, a la decisión de involucrar sus cuerpos en la defensa de identidades, culturas, Historias? Estos interrogantes, buscan respuestas en algunos principios de la cultura Judía europea y su culto a la vida. Asimismo, en continuidad con un artículo y ponencia anteriormente presentado en este congreso, se inicia una tarea de comparación con la imagen corporal y marcial del soldado alemán, típica y coincidente con muchos modos del ser corporal en la formación militar europea y la de algunos grupos juveniles de la época, en particular, la de jóvenes júdios y deportistas en la República Argentina

La popularización del fútbol en España. Análisis del fenómeno a través de la literatura especializada del fútbol (1920-1936)

La consolidación del fútbol en España se produjo a partir de los años veinte del siglo pasado. Entre 1920 a 1936 el fútbol adquirió todos los rasgos personales que hoy le caracterizan. En esta época surgió una literatura técnica y periodística especializada que se configuró como uno de los pilares más importantes para el desarrollo técnico deportivo y del espectáculo de masas. En torno a esta cuestión, el presente artículo busca un doble objetivo: recopilar la literatura técnica y periodística especializada publicada durante el período de 1920 a 1936, y reconocer el alcance social, técnico e ideológico de esta literatura futbolística en el proceso de configuración del fútbol en España. Para abordar este propósito hemos utilizado una metodología heurística y de análisis documental de las fuentes originales. Apreciamos que a través de estas obras podemos conocer mejor el contexto del espacio socio-deportivo del fútbol en España y, también, despertar nuevas líneas potenciales de investigación.

The Devil and Views on the “Other” in Part One of Pedro Cieza de León’s "Crónica del Perú" (1553)

Many 16th century Spanish chroniclers and missionaries, arriving at what they interpreted as a New World, saw the Devil as a “hermeneutic wildcard” that allowed them to comprehend indigenous religions. Pedro Cieza de León, a soldier in the conquest of Peru, is a case in point. Cieza considers the Devil responsible for the most aberrant religious practices and customs of the Indians, although he views the natives in a positive light, as men susceptible to divine salvation. From a providentialist perspective of the history of the conquest, Cieza interprets that the evangelization and conversion of the Indians and the implantation of Christian civilization by the Spanish Crown, were able to defeat the Devil.

Cuerpos y estética : de deportistas y milicianos. Los movimientos juveniles judíos de resistencia en la década del 30 en la República Argentina

Dentro de la experiencia de investigación que a partir del año 2013 me toca dirigir, se encuentra una línea particular, relacionada con la estética y los cuerpos, que sugiere la indagación de agrupamientos particulares, relacionados con las prácticas corporales con sentido estético y artístico. En ese sentido, para nuestro equipo, se torna de interés reconocer, entre otros asuntos, como a partir de determinadas construcciones de la sensibilidad corporal, algunos grupos adquieren identidades propias, originales, muchas veces para la generación de nuevas tendencias culturales y otras en respuesta a contextos que desafiaron su integridad y núcleo más profundo. Esta presentación se propone indagar algunos de esos contextos, en este caso, la construcción de una cultura corporal propia de los jóvenes judíos en la década del 30 en nuestro país. La Segunda guerra Mundial y la vida de los Jóvenes Judíos Europeos en ese período, tuvo una fuerte relación con las actividades: Deportivas, militantes, de la Resistencia política y muchas veces, de militancia en la Resistencia armada. La década del 30 fue la antesala de esa construcción, como si forjar templanza en la competencia deportiva fuera el preludio de lo que la historia adivinaba para la década siguiente. ¿Cómo se estructuraron sus estéticas corporales, sus inclinaciones de moda e indumentaria, y relaciones sociales? ¿Cómo ?saltan? de las canchas deportivas Macabeas o de la Juventud Socialista, a la decisión de involucrar sus cuerpos en la defensa de identidades, culturas, Historias? Estos interrogantes, buscan respuestas en algunos principios de la cultura Judía europea y su culto a la vida. Asimismo, en continuidad con un artículo y ponencia anteriormente presentado en este congreso, se inicia una tarea de comparación con la imagen corporal y marcial del soldado alemán, típica y coincidente con muchos modos del ser corporal en la formación militar europea y la de algunos grupos juveniles de la época, en particular, la de jóvenes júdios y deportistas en la República Argentina

Desenvolvimento e caracterização de um sabonete contendo borras de café

Desde da antiguidade que o ser humano se preocupa com a sua aparência externa, em especial com a pele. Para além do desenvolvimento de cosméticos, surgiram também produtos mais complexos, os cosmecêuticos, que diferem dos cosméticos devido a poderem influenciar a função biológica da pele, causando modificações positivas e duráveis. O conceito de sustentabilidade é usado para definir ações e atividades humanas que visam suprir as necessidades atuais dos seres humanos, sem comprometer o futuro das próximas gerações. Ou seja, a sustentabilidade está diretamente relacionada ao desenvolvimento económico e material sem agredir o meio ambiente, utilizando os recursos naturais de forma inteligente para que eles se mantenham no futuro. Seguindo estes parâmetros, a humanidade pode garantir o desenvolvimento sustentável. As borras de café são consideradas como um subproduto alimentar, sem grande reutilização, o que promove danos no impacto ambiental. Por outro lado, as borras de café podem exercer grandes benefícios para a pele, pois são consideradas excelentes exfoliantes naturais com propriedades refirmantes. Os produtos à base de cafeína são aliados no combate à celulite, na estimulação da regeneração celular e da circulação sanguínea, bem como, no rejuvenescimento e revitalização da pele. Este trabalho consistiu no desenvolvimento de um sabonete, contendo borras de café, como forma de reaproveitamento de um subproduto alimentar rico em cafeína, com o intuito de obter produtos com boas propriedades cosméticas e elevada estabilidade física e química. As borras de café foram analisadas em termos da sua estabilidade física e química através de ensaios de estabilidade acelerada por centrifugação, textura, reologia e doseamento do teor de cafeína por HPLC. Os resultados obtidos através do controlo físico-químico dos sabonetes, da determinação do potencial irritante cutâneo e da análise sensorial efectuada em voluntários humanos, demonstraram que é possível preparar sabonetes de borra de café com boa estabilidade físico-química, boa tolerância cutânea e com características sensoriais adequadas, utilizando uma base de sabão constituída pelos ingredientes (INCI): Sodium Palmate, Sodium Palm Kernelate, Aqua (water), Glycerine, Fragância de café, Sodium Chloride, Butyrospermum Parkii Butter (Shea Butter), CI 778911 (Titanium Dioxide), Tetrasodium EDTA, CI 77499, Linalool e à qual foi adicionada 5% de borras de café.