Construcción de la ciudad moderna a través de la fotografía de Luis Lladó

La obra de Luis Lladó es un destacado ejemplo de visión fotográfica directa y moderna. Una obra de carácter claramente instrumental y descriptiva pero directamente relacionada con la gran fotografía constructivista soviética, la fotografía de vanguardia europea o con los planteamientos de la fotografía directa americana. Entre los años 1923 a 1936 la Gran Vía de Madrid fue el eje vertebrador de una metamorfosis urbanística que pretendía construir un modelo de sociedad optimista basada en el consumo y el ocio que cohabitaba con una mentalidad castiza y conservadora. Luis Lladó será testigo directo de estas tensiones contribuyendo a través de su mirada a la construcción del mito moderno madrileño. El análisis pormenorizado de la obra de Lladó nos descubre además la creciente importancia de la arquitectura de interiores y el diseño presentes en tiendas, cines y restaurante de la época. Espacios que destacan por la extraordinaria modernidad de las propuestas, que nada tiene que envidiar a las planteadas, en la misma época, por escuelas arquitectónicas centroeuropeas. A través de la Obra de Luis Lladó realizaremos un análisis de la imagen de la ciudad durante uno de los periodos más apasionantes de la historia de Madrid.Luis Lladó’s work is an outstanding example of direct and modern photographic vision. His artistic work descriptives and instrumentaly relates to the great Russian Constructivism photography, the European avant-garde photography or with the American straight photography movement. Between 1923-1936 Madrid´s Gran Via underwent the most important urban metamorphosis in the city. Madrid was intended to be a new modern society based on private consumption and leisure, but living together with a very conservative and “castiza” Spanish mentality. Luis Lladó was a direct witness of these tensions and changes, with his photographer’s eye he contributed to the construction of Madrid’s modern myth. A detailed analysis of Llado’s work discovers for us the increasing importance of design and interior architecture in shops, restaurants and cinemas in these times. Luis Lladó’s photography enables a detailed analysis of one of the most interesting times in the Madrid´s recent history

Quantitative characterization of multicomponent polymers by sample-controlled thermal analysis

This paper explores the potential of sample-controlled thermal analysis (SCTA) in order to perform compositional analysis of multicomponent polymeric materials by means of thermogravimetric experiments. In SCTA experiments, the response of the sample to the temperature determines the evolution of the temperature by means of a feedback system; thus, what is controlled is not the temperature-time profile, as in conventional analysis, but rather the evolution of the reaction rate with time. The higher resolving power provided by the technique has been used for determining the composition of polymer blends composed of polyvinyl chloride (PVC) and different commercial plasticizers, a system where the individual components have very similar thermal stabilities, thereby rendering useless thermogravimetric experiments run under conventional conditions. Different SCTA procedures, such as constant rate thermal analysis (CRTA), which has received special attention, and high-resolution and stepwise isothermal analysis have been tested, and the results obtained have been compared with linear heating rate technique. It has been proven that CRTA can be used to effectively determine the exact composition of the blend.Junta de Andalucía TEP-03002Ministerio de Ciencia e Innovación MAT 2008- 06619/MA

Laboratory Measurements of Fe XXIV L-Shell Line Emission

Recent ASCA spectra exhibit discrepancies with the relative line intensities of various Fe XXIII and XXIV L-shell emission lines predicted by standard plasma emission codes. To address this issue, we have carried out a series of high-resolution, broadband measurements of Fe XXIV line emission using an electron beam ion trap facility. X-ray lines produced in the trap are detected and resolved using Bragg crystal spectrometers. We report measurements of 33 2 and 43 2 transitions, which result primarily from electron impact excitation. Overall, good agreement is found with distorted wave calculations

Depression and Suicide Risk in Mild Cognitive Impairment: The Role of Alzheimer’s Disease Biomarkers

Background: Patients with depression and mild cognitive impairment (MCI) are at greater risk of developing dementia. Depression involves a higher risk of suicidal ideation (SI) and suicide attempts (SA). Biomarkers of Alzheimer’s Disease (AD) could help to clarify the role of depression and SI in AD. Method: Fifty-nine participants aged > 50 with criteria of MCI positive (MCI-AD) (n=22) and negative (MCI-Non AD) (n=24) AD and healthy controls (HC) (n=13) were evaluated. We used the Geriatric Depression Scale (GDS-30) and the GDS-SI factor to measure depression and indirect risk for suicide, respectively. Additionally, AD biomarkers such as amyloid-ß (Aß), hyperphosphorilated tau (P-tau), and total tau (T-tau) in cerebrospinal fluid (CSF) were analyzed. Results: No significant differences between the groups were found in depression. However, in the MCI-AD group, lower P-tau and T-tau levels were related to higher GDS-SI scores, suggesting that MCI-AD patients with lower AD pathology are at a higher risk of suicide. Conclusions: The result highlights the importance of considering SI in the initial phases of AD, and the potential role of AD biomarkers in early detection of symptoms. Antecedentes: Los pacientes con depresión y deterioro cognitivo leve (DCL) tienen un alto riesgo de desarrollar demencia. La depresión implica un alto riesgo de ideación suicida (IS) e intentos de suicidio (AS). Los biomarcadores de la enfermedad de Alzheimer (EA) pueden clarificar el papel de la depresión e IS en la EA. Método: Cincuenta y nueve participantes >50 años con criterios de DCL-EA positivo (DCL-EA; 22) y negativo (DCL-NoEA; 24) y 13 controles sanos. La depresión fue evaluada con la Escala Geriátrica de Depresión (GDS-30) y la IS con el factor GDS-IS. Además, se midieron los siguientes biomarcadores en el líquido cefalorraquídeo: ß-amiloide (ß-A), tau hiperfosforilada (H-tau) y total (T-tau). Resultados: No se encontraron diferencias significativas entre los tres grupos de participantes en depresión o en IS. Sin embargo, en el grupo DCL-EA, niveles más bajos de H-tau y T-tau, indicadores de menor patología EA, se relacionaron significativamente con mayor riesgo de suicidio indirecto. Conclusiones: Este resultado subraya la importancia de considerar la IS en fases iniciales de EA, y el potencial papel de los biomarcadores de EA para detectar sus síntomas

Educating the gifted student: Eagerness to achieve as a curricular competence

Durante las últimas décadas, las altas capacidades (AACC) se han desvelado como un determinante curricular que evidencia la necesidad de adaptar los contenidos a las características de los alumnos definidos por las mismas. En España, diversas comunidades autónomas han diseñado programas que, mediante actividades extraordinarias, persiguen responder a esta demanda y otorgar a los estudiantes talentosos el contexto propicio para el desarrollo y fortalecimiento de sus habilidades. En el caso de Madrid, esta propuesta presenta una participación privada de carácter empresarial que ha evidenciado la posible conjunción entre sendos entornos al considerar el activo laboral, fundamentalmente orientado a la resolución de proyectos, en el sujeto adolescente con AACC. Esta investigación ha examinado, mediante un cuestionario con naturaleza 180º cumplimentado por 342 personas (padres e hijos habilidosos, docentes y compañeros escolares) en siete centros madrileños, la posibilidad identificativa de la competencia afán de logro al considerar que su distinción prematura permite su trabajo en el contexto educativo y la formación del alumnado en aras a promover a un individuo que orientará su labor profesional hacia la finalización de las actividades asignadas. Los resultados obtenidos han permitido trazar, igualmente, un perfil genérico del estudiante talentoso mediante la combinación de sus propias apreciaciones y de las de su entorno y reconocer a las aptitudes inherentes mejor valoradas al igual que las calificadas de forma contraria.During the last decades, high intellectual abilities have been revealed as a decisive curricular factor that evidences the need to adapt content to students' characteristics. In Spain, various autonomous communities have designed programs that, through extraordinary activities, seek to respond to this demand and provide talented students with the appropriate context for the development and strengthening of their skills. In the case of Madrid, this proposal includes private involvement of an entrepreneurial nature that has demonstrated the possible connection between the two environments when considering the labor asset, fundamentally oriented to the resolution of projects by adolescent subjects with above average cognitive capacities. This research has examined, by means of a 180º questionnaire completed by 342 subjects (comprised of parents and skilled children, teachers and classmates) in seven Madrid schools, the possibility of identifying the ‘eagerness to achieve’ competence, considering that its early distinction enables its development in educational contexts and the training of students in order to promote individuals who focus their professional work towards the completion of assigned activities. The results obtained have also made it possible to draw up a generic profile of the talented student by combining his or her own assessments and those of his or her environment, and to recognize their most highly valued inherent aptitudes as well as those least valued.Depto. de Teorías y Análisis de la ComunicaciónFac. de Ciencias de la InformaciónTRUEpu

A pyrF auxotrophic mutant of Sinorhizobium fredii HH103 impaired in its symbiotic interactions with soybean and other legumes

Transposon Tn5-Mob mutagenesis allowed the selection of a Sinorhizobium fredii HH103 mutant derivative (SVQ 292) that requires the presence of uracil to grow in minimal media. The mutated gene, pyrF, codes for an orotidine-5´- monophosphate decarboxylase (EC 4.1.1.23). Mutant SVQ 292 and its parental prototrophic mutant HH103 showed similar Nod-factor and lipopolysaccharide profiles. The symbiotic properties of mutant SVQ 292 were severely impaired with all legumes tested. Mutant SVQ 292 formed small ineffective nodules on Cajanus cajan and abnormal nodules (pseudonodules) unable to fix nitrogen on Glycine max (soybean), Macroptitlium atropurpureum, Indigofera tinctoria, and Desmodium canadense. It also did not induce any macroscopic response in Macrotyloma axillare roots. The symbiotic capacity of SVQ 292 with soybean was not enhanced by the addition of uracil to the plant nutritive solution. [Int Microbiol 2007; 10(3):169-176

Physics of ULIRGs with MUSE and ALMA: The PUMA project: I. Properties of the survey and first MUSE data results

Ultraluminous infrared galaxies (ULIRGs) are characterised by extreme starburst (SB) and AGN activity, and are therefore ideal laboratories for studying the outflow phenomena. We have recently started a project called Physics of ULIRGs with MUSE and ALMA (PUMA), which is a survey of 25 nearby (z < 0.165) ULIRGs observed with the integral field spectrograph MUSE and the interferometer ALMA. This sample includes systems with both AGN and SB nuclear activity in the pre- and post-coalescence phases of major mergers. The main goals of the project are to study the prevalence of multi-phase outflows as a function of the galaxy properties, to constrain the driving mechanisms of the outflows (e.g. distinguish between SB and AGN winds), and to identify feedback effects on the host galaxy. In this first paper, we present details on the sample selection, MUSE observations, and derive first data products. MUSE data were analysed to study the dynamical status of each of the 21 ULIRGs observed so far, taking the stellar kinematics and the morphological properties inferred from MUSE narrow-band images into account. We also located the ULIRG nuclei, using near-IR (HST) and mm (ALMA) data, and studied their optical spectra to infer the ionisation state through BPT diagnostics, and outflows in both ionised and neutral gas. We show that the morphological and stellar kinematic classifications are consistent: post-coalescence systems are more likely associated with ordered motions, while interacting (binary) systems are dominated by non-ordered and streaming motions. We also find broad and asymmetric [OIII] and NaID profiles in almost all nuclear spectra, with line widths in the range 300-2000 km/s, possibly associated with AGN- and SB-driven winds. This result reinforces previous findings that indicated that outflows are ubiquitous during the pre- and post-coalescence phases of major mergers.ERC STF

Cluster Transformation Coefficients for Structure and Dynamics Calculations in n-Particle Systems: Atoms, Nuclei, and Quarks

The structure and dynamics of an n-particle system are described with coupled nonlinear Heisenberg's commutator equations where the nonlinear terms are generated by the two-body interaction that excites the reference vacuum via particle-particle and particle-hole excitations. Nonperturbative solutions of the system are obtained with the use of dynamic linearization approximation and cluster transformation coefficients. The dynamic linearization approximation converts the commutator chain into an eigenvalue problem. The cluster coefficients factorize the matrix elements of the (n)-particles or particle-hole systems in terms of the matrix elements of the (n-1)-systems coupled to a particle-particle, particle-hole, and hole-hole boson. Group properties of the particle-particle, particle-hole, and hole-hole permutation groups simplify the calculation of these coefficients. The particle-particle vacuum-excitations generate superconductive diagrams in the dynamics of 3-quarks systems. Applications of the model to fermionic and bosonic systems are discussed.Comment: 13 pages, 5 figures, Wigner Proceedings for Conference Wigner Centenial Pecs, July 8-12, 200

Hypotension, acidosis and vasodilation syndrome after heart transplant: incidence, risk factors, and prognosis

[Abstract] Background. HAV syndrome, the combination of hypotension, acidosis and vasodilation (HAV), is a serious postoperative complication after heart transplantation (HT). Its etiology and prognosis are poorly understood. Aim. To determine the incidence and prognosis of post-HT HAV syndrome and examine possible risk factors. Methods. Retrospective examination of the records of 85 consecutive patients who underwent HT between December 1999 and June 2002 sought the HAV criteria: systolic BP <85 mm Hg plus HCO3 <19 mEq/l whole excluding cardiogenic, hypovolemic and septic shock. Donor variables included sex, age, weight, height, cause of death, time in ICU, and ischemic time; while recipient variables, sex, age, weight, height, etiology of cardiopathy, previous cardiopulmonary bypass surgery, preoperative amiodarone, β-blockers, catecholamines, mechanical ventilation or intra aortic balloon pump (IABP), RVP, time on waiting list, pump time, reoperations, polytransfusion, preoperative creatinine, GOT, GPT and GGT, induction with OKT3 or anti-CD25, bypass-to-HAV time, duration of catecholamine treatment, and 1 month survival after HT. Results. The 11 HAV cases (13%) appeared between 1 and 72 h after HT (75% in the first hour). Catecholamines were used for 1 to 6 days; control was achieved within 48 h in 58% of cases. Two HAV patients (18%) died within the first month versus six non-HAV patients (8.1%) (P = .275). Only polytransfusion showed more than a borderline value to predict HAV syndrome. Conclusions. HAV syndrome has an incidence of 13% and a mortality of 18% within 1 month post-HT. The only likely risk factor is polytransfusion