1,486 research outputs found
Ser moda. Apuntes sobre los modos de afirmarse en el mundo o en el mercado de las identidades
En este artículo el autor reflexiona sobre el significado de los conceptos «ser moda», y «estar a la moda», expresiones que se mueven respectivamente en las esferas del «ser» y el «parecer», en la naturalidad del sujeto que es, y en la artificialidad de aquel que se crea una identidad social. Para desarrollar su teoría Alberto Abruzzese acude a la obra del sociólogo Georg Simmel, que le sirve como base para analizar el papel que la moda ha ocupado en el desarrollo de las sociedades modernas. El autor apunta las características y contradicciones del estatuto de la moda, que no sólo tiene la capacidad de crear pertenencia social, sino que también cumple el objetivo de diferenciar al sujeto del grupo en el que desea insertarse, precisamente, mediante los usos de la moda.In this paper the meaning of «being fashion» and of «being fashionable» is analyzed. This expressions are related to the concepts «being» and «appearance», to the natural behavior of «the one that is» and the artificiality of «the one that creates» a social identity. The author uses sociologist Georg Simmel’s theory to analyze the role of fashion in modern society. He describes the characteristics and contradictions of fashion such as creating social membership and differentiating the subject within the group
Fatigue failure of welded connections at orthotropic bridges
Orthotropic decks were applied to the long span bridges after World War II due to several advantages, such as light weight, high strength, few deck joints, durability, rapid construction, life-cycle economy. The fatigue problem of orthotropic decks was realized twenty years ago since fatigue failure was found. In the past two decades large amount of studies and investigations were carried out and fruitful achievements were obtained. It was found that most of the fatigue cracks were occurred at the welded connection details, such as rib-to-deck plate, rib-to-diaphragm, and rib-to-diaphragm-to-deck plate (RDDP). These connections are sensitive to fatigue cracking due to high concentrated stress and residual stress at welded connections. In this paper practical fatigue failure cases at the welded connections, ease to occur fatigue cracking, are presented, and analyzed through a numerical modeling of orthotropic deck via FE (finite element) software. Furthermore, the improvement technologies of fatigue are also discussed. The results of the analysis can be contributed to the evaluation of the fatigue design for the orthotropic deck
Structural analysis and reinforcement of XVI century building in the center of Naples, Italy
Most of the buildings in the historical center of the cities in Italy are quite old, and sometimes their age is more than several centuries. This means that a double activity aim should be considered by the community, the historical conservation of the cultural heritage and the static health of the structure to guarantee the safety for the people living or working in those special buildings. This double need for the “living” cultural heritage architectures sometimes arises some internal conflicts, since higher, exaggerated reinforcing interventions could lead to damage, or even cancel, some architectural evidence. The paper introduces as a case study the example of one residential historical building in Naples, Italy, reinforced considering the need to preserve the original aspect. Extensive performed diagnostic tests and specific structural numerical analysis carried out for the emblematic parts of the building are presented
Study on the Influence of Knots on the Seismic Performance of Chinese Traditional Wooden Building Beams
Log is widely used in Chinese traditional wooden buildings, which has good compression, bending, tensile and seismic performance, but the existence of knots in log will have a greater adverse impact on the structure. Taking the residence of Zhou Fujiu, a salt merchant in Yangzhou as an example, the building was built in the late Qing Dynasty, covering an area of 3700 square meters. Through the field investigation of Zhou Fujiu building in Yangzhou, it is found that in addition to the common natural cracks, the wooden beams with knots in the tension zone are obviously damaged. In order to further study the influence of knots on the seismic performance of wooden beams and provide relevant theoretical basis for the protection of traditional Chinese wooden buildings, six different wooden beams were designed according to the scale of 1:5.28, and the low cycle reciprocating loading test under three-point loading was carried out. The effects of knots at different positions and depths on the seismic performance of timber beams are simulated respectively. The hysteretic curve and skeleton curve of the timber beam with knots are obtained by experiments, and the stiffness degradation and energy dissipation capacity are analyzed. The results show that with the increase of the depth of the knots, the bearing capacity of the beam shows a significant decreasing trend, the hysteretic curve becomes more stable, the energy dissipation capacity decreases, and the seismic performance decreases. When there are knots on both sides of the bending and compression area, the seismic performance of the wooden beam decreases most significantly
Prenatal hyperandrogenism induces alterations that affect liver lipid metabolism
Prenatal hyperandrogenism is hypothesized as one of the main factors contributing to26 the development of polycystic ovary syndrome (PCOS). PCOS patients have high risk27 of developing fatty liver and steatosis. This study aimed to evaluate the role of prenatal28 hyperandrogenism in liver lipid metabolism and fatty liver development. Pregnant rats29 were hyperandrogenized with testosterone. At pubertal age, the prenatally30 hyperandrogenized (PH) female offspring displayed both ovulatory (PHov) and31 anovulatory (PHanov) phenotypes that mimic human PCOS features. We evaluated32 hepatic transferases, liver lipid content, the balance between lipogenesis and fatty acid33 oxidation pathway, oxidant/antioxidant balance and pro-inflammatory status. We also34 evaluated the general metabolic status through growth rate curve, basal glucose and35 insulin levels, glucose tolerance test, HOMA-IR index and serum lipid profile.36 Although neither PH group showed signs of liver lipid content, the lipogenesis and fatty37 oxidation pathways were altered. The PH groups also showed impaired38 oxidant/antioxidant balance, a decrease in the pro-inflammatory pathway (measured by39 prostaglandin E2 and cyclooxygenase-2 levels), decreased glucose tolerance, imbalance40 of circulating lipids and increased risk of metabolic syndrome. We conclude that41 prenatal hyperandrogenism generates both PHov and PHanov phenotypes with signs of42 liver alterations, imbalance in lipid metabolism and increased risk of developing43 metabolic syndrome. The anovulatory phenotype showed more alterations in liver44 lipogenesis and a more impaired balance of insulin and glucose metabolism, being more45 susceptible to the development of steatosis.Fil: Abruzzese, Giselle Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Heber, María Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Ferreira, Silvana Rocío. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Velez, Leandro Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Reynoso, Roxana María. Universidad de Buenos Aires. Facultad de Medicina. Departamento de Ciencias Fisiológicas. Laboratorio de Endocrinología; ArgentinaFil: Pignataro, Omar Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Motta, Alicia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; Argentin
Orchestration at the beginning: mitosis in sea urchin embryo
Development of multicellular organisms is driven by a series of mitotic divisions after fertilization. Total cytoplasmic volume does not increase during this process, resulting in an increasing number of smaller daughter cells. Cell divisions are initially synchronous in an early embryo, but this ends at the 16-cell stage in the sea urchin. Orchesterated mitosis does, however, continue in subpopulations via the coordination of two different processes: karyokinesis and cytokinesis. Part of this asynchrony is due to the differentiation of lineages.Fil: Abruzzese, Giselle Adriana. University of Chicago; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Tanpradit, Nae. University of Chicago; Estados UnidosFil: Tavares, Renata S.. University of Chicago; Estados Unido
Unexpected Anal Squamous Cells Carcinoma after Open Hemorrhoidectomy
We report a case of unexpected anal squamous cells carcinoma found in hemorrhoidectomy specimen. The patient had a 3-year history of prolapsing hemorrhoids. A prolapsing hemorrhoid was present at eleven o’clock in lithotomy. Milligan-Morgan was performed and gross examination of the specimen was unremarkable. Histopathologic evaluation showed noninvasive squamous cells carcinoma. The present case report evidences the opportunity of routine histopathologic analysis of hemorrhoidal specimens particularly in case of long-standing prolapse. Questions arise in the option of those techniques where no specimens are collected or tissue is excised far from deceased area
Non luoghi a procedere
L’Autore comincia questo saggio dedicando un’ampia analisi al film del regista Richard C. Sarafian Punto Zero (Vanishing Point) del 1971, mettendone in risalto le implicazioni che attribuisce al viaggio e la peculiarità che all’interno di esso assume il rapporto uomo-macchina. La seconda parte del saggio è dedicata al viaggio come «invenzione occidentale», facendone emergere le molteplici dimensioni e mettendolo infine in relazione alle trasformazioni che le nuove tecnologie e i nuovi media stanno imponendo alla nostra percezione dello spazio e del tempo. The author begins this essay by dedicating an extensive analysis to the 1971 film by director Richard C. Sarafian Punto Zero (Vanishing Point), highlighting the implications it attributes to travel and the peculiarity that the man-machine relationship takes on within it. The second part of the essay is dedicated to travel as a "western invention", highlighting its multiple dimensions and finally relating it to the transformations that new technologies and new media are imposing on our perception of space and time
Transcreación, intertextualidad y etnopoética
In this essay I speak of two artworks, that are located at the intersection between transcreation and ethnopoetics. I understand these resources as means to generate a proposal that allows the creation of a new territory or zone of contact between contemporary art and indigenous cultures, where dialogical and participatory relationships between contemporary art and the ontological knowledge of our cultures can be explored.
En este ensayo hablo de dos cuerpos de obra localizados en la intersección entre la transcreación y la etnopoética. Entiendo a esos recursos como medios para generar una propuesta que permita crear un nuevo territorio o zona de contacto entre el arte contemporáneo y las culturas indígenas, donde se exploren y formen relaciones dialógicas y participativas entre el arte contemporáneo y los conocimientos ontológicos de nuestras culturas.
 
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