2,951 research outputs found
A new parasite. Candela as a case study through Arte de la Primera Mitad del s. XXI
No full textReinventando algunas de las ideas clave de la historia del comisariado, Candela surge como institución de lo que ellas mismas denominan comensariado en el contexto del Máster en Historia del Arte Contemporáneo y Cultura Visual impartido en el MNCARS. Mediante acciones como Arte de la Primera Mitad del s. XX1 pretenden subvertir los modos de acercarse al arte, el espacio y la arquitectura, así como el modo de existir dentro de la institución a través de lo que podemos considerar prácticas parasitarias.Reinventing some of the key ideas from curatorial history, Candela was created as an institution of what they themselves denominate comensariado within the context of the Masters programme on Contemporary Art History and Visual Culture that takes place at the MNCARS. Through actions like Arte de la Primera Mitad del s. XX1, they strive to subvert the ways in which we approach art, space and architecture, as well as the way we exist inside the institution with the aid of what we could consider parasital practices
ADDOME ACUTO PERFORATIVO CON EMPIEMA DELLA COLECISTI: RISOLUZIONE CHIRURGICA VIDEOLAPAROSCOPICA
No full textCalculation process of long cylindrical shells in the work of Felix Candela. The equilibrium approach
No full textThe objective of the present work is to show how from the 50's, Felix Candela got to analyze the roof long cylindrical shells in reinforced concrete. It was done from a structural point of view, with calculations based simply on equilibrium equations, with just an objective: to get a safely and easily calculation method, respecting the assignment of reinforced concrete and, therefore, obviating the considerations of compatibility and deformation that could undergo the structure. And he did it in a moment when Elastic Theory of Shells was practically inapplicable when it involved the resolution of eighth order differential equations. The theory is developed mathematically choosing an example of work of Félix Candela, done by roof long cylindrical shells, and making the necessary structural calculations proposed.El objetivo del presente trabajo consiste en evidenciar como a partir de los años 50 Félix Candela consiguió diseñar y calcular estructuralmente cáscaras cilíndricas largas de cubierta de hormigón armado mediante análisis basados simplemente en ecuaciones de equilibrio, con un claro objetivo: conseguir un método de cálculo sencillo y seguro, respetando la característica de cedencia del hormigón armado y, por tanto, obviando las consideraciones de compatibilidad y deformación que pudiera sufrir la estructura. Y lo hizo en un momento donde la teoría elástica de cáscaras resultaba prácticamente inaplicable al implicar la resolución de ecuaciones diferenciales de octavo orden. Se justifica analíticamente la teoría escogiendo un ejemplo de la obra de Félix Candela, ejecutada por medio de cáscaras cilíndricas largas de cubierta, y elaborando el proceso de cálculo necesario propuesto
Prefazione a "Evolution Equations and Mathematical Models in the Applied Sciences" (EEMMAS)
No full textThe role of genetics
No full textGenetics has been investigated as a factor involved in the occurrence, progression, and clinical presentation of rotator cuff pathology. As rotator cuff disease is multifactorial, no single gene is directly involved in the pathology. Phenotypic expression of genetic susceptibility manifests at the level of tendon ultrastructure operating through the regulation of apoptosis and regenerative capacity [1]
New concepts on the glenoid fixation in reverse shoulder prosthesis
No full textRotator cuff tears can alter glenohumeral mechanics and predispose the glenoid to abnormal wear patterns [1]. The technical aspect of joint replacement increases in complexity with increasing bone loss and posterior glenohumeral subluxation [2-4], especially in cases of type B glenoid morphology according to Walch’s classification (Fig. 1) [5]
Clinical evaluation
No full textIn the early 1990s, about 30 tests were described with the aim of diagnosing a rotator cuff tear [1]. Of the last 1,000 scientific articles on rotator cuff cited in PubMed, 3 % is about new semeiological tests acting to reveal a lesion. In fact, many of these tests only retain historical importance because they have been handed down, cited, and interpreted even if they have never been validated. The value of validation is given by the number of times the test was positive or negative in the affected population and in the control group (homogeneous for age and sex) consisting of healthy subjects for that disease [2]
Rotator cuff arthropathy. what is it?
No full textIn the early 1980s, Neer et al. [1, 2] have coined the term “rotator cuff arthropathy” to indicate a nosological condition characterized by arthritic degeneration of the glenohumeral joint consequent to the massive-postero-superior rotator cuff tear. However, more than a century earlier, Adams [3], in his book on rheumatic gout, and Smith [4, 5] had described cases of shoulder arthropathy characterized by erosion of the upper portion of the humeral head, of the acromion, and of the distal third of the clavicle and rotator cuff tear. Codman [6], in his monograph published in 1934, had described the case of a woman, 51 years old, whose shoulder underwent rotator cuff tear, glenohumeral arthropathy, loose bodies, and swelling for the abundant articular synovial fluid
Treatment of the reparable postero-superior lesions: Single and double- row repair
No full textThe number of rotator cuff arthroscopic repairs is increased by 600 % in the next decade to 1996 [1]. Actually, the number of open repairs too is increased during the same period, but only by 34 %. According to a survey conducted in 2005 among orthopedists of the American Academy, 62 %, of the 167 interrogated colleagues, routinely arthroscopically repaired a small rotator cuff tear [2]. This finding is surprising when compared with 14.5 % that was the rate extrapolated 3 years earlier from a Dunn et al. [3] study
Candela photo-injector experimental results
No full textThe CANDELA photo-injector is a two cell S-band photo-injector. The copper cathode is illuminated by a 500 fs Ti:sapphire laser. This paper presents energy spectrum measurements of the dark current and intense electron emission that occurs when the laser power density is very high
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