805 research outputs found
Preoperative digital three-dimensional planning for rhinoplasty
BACKGROUND: This report describes preoperative digital planning for rhinoplasty using a new three-dimensional (3D) radiologic viewer that allows both patients and surgeons to visualize on a common monitor the 3D real aspect of the nose in its inner and outer sides.
METHODS: In the period 2002 to 2008, 210 patients underwent rhinoplasty procedures in the authors' clinic. The patients were randomly divided into three groups according to the type of preoperative planning used: photos only, a simulated result by Adobe Photoshop, or the 3D radiologic viewer. The parameters evaluated included the number of patients that underwent surgery after the first consultation, the number of patients who asked for a reintervention, patient satisfaction (according to a test given to the patients 12 months postoperatively), the surgical time required for a functional intervention, and the improvement in nasal function by postoperative rhinomanometry and subjective evaluation.
RESULTS: Computer-aided technologies led to a higher number of patients deciding to undergo a rhinoplasty. Simulation of the postoperative results was not as useful in the postoperative period due to the higher number of reintervention requests.
CONCLUSION: The patients undergoing rhinoplasties preferred new technologies in the preoperative period. The advantages of using the 3D radiologic viewer included improved preoperative planning, reduction in intraoperative stress, a higher number of patients undergoing surgery, reduction in postoperative surgical corrections, reduction in surgical time for the functional intervention, a higher rate of improvement in nasal function, a higher percentage of postoperative satisfaction, and reduced costs
Radiative corrections to from three generations of Majorana neutrinos and sneutrinos
In this work we study the radiative corrections to the mass of the lightest
Higgs boson of the MSSM from three generations of Majorana neutrinos and
sneutrinos. The spectrum of the MSSM is augmented by three right handed
neutrinos and their supersymmetric partners. A seesaw mechanism of type I is
used to generate the physical neutrino masses and oscillations that we require
to be in agreement with present neutrino data. We present a full one-loop
computation of these Higgs mass corrections, and analyze in full detail their
numerical size in terms of both the MSSM and the new (s)neutrino parameters. A
critical discussion on the different possible renormalization schemes and their
implications is included.Comment: 42 pages, 39 figures, 1 appendix, version published in AHE
Dysbiosis by neutralizing commensal mediated inhibition of pathobionts
Dysbiosis in the periodontal microbiota is associated with the development of periodontal diseases. Little is known about the initiation of dysbiosis. It was hypothesized that some commensal bacteria suppress the outgrowth of pathobionts by H2O2 production. However, serum and blood components released due to inflammation can neutralize this suppressive effect, leading to the initiation of dysbiosis. Agar plate, dual-species and multi-species ecology experiments showed that H2O2 production by commensal bacteria decreases pathobiont growth and colonization. Peroxidase and blood components neutralize this inhibitory effect primarily by an exogenous peroxidase activity without stimulating growth and biofilm formation of pathobionts directly. In multi-species environments, neutralization of H2O2 resulted in 2 to 3 log increases in pathobionts, a hallmark for dysbiosis. Our data show that in oral biofilms, commensal species suppress the amounts of pathobionts by H2O2 production. Inflammation can neutralize this effect and thereby initiates dysbiosis by allowing the outgrowth of pathobionts
In vitro increased respiratory activity of selected oral bacteria may explain competitive and collaborative interactions in the oral microbiome
Understanding the driving forces behind the shifts in the ecological balance of the oral microbiota will become essential for the future management and treatment of periodontitis. As the use of competitive approaches for modulating bacterial outgrowth is unexplored in the oral ecosystem, our study aimed to investigate both the associations among groups of functional compounds and the impact of individual substrates on selected members of the oral microbiome. We employed the Phenotype Microarray high-throughput technology to analyse the microbial cellular phenotypes of 15 oral bacteria. Multivariate statistical analysis was used to detect respiratory activity triggers and to assess similar metabolic activities. Carbon and nitrogen were relevant for the respiration of health-associated bacteria, explaining competitive interactions when grown in biofilms. Carbon, nitrogen, and peptides tended to decrease the respiratory activity of all pathobionts, but not significantly. None of the evaluated compounds significantly increased activity of pathobionts at both 24 and 48 h. Additionally, metabolite requirements of pathobionts were dissimilar, suggesting that collective modulation of their respiratory activity may be challenging. Flow cytometry indicated that the metabolic activity detected in the Biolog plates may not be a direct result of the number of bacterial cells. In addition, damage to the cell membrane may not influence overall respiratory activity. Our methodology confirmed previously reported competitive and collaborative interactions among bacterial groups, which could be used either as marker of health status or as targets for modulation of the oral environment
Transgresión del discurso hegemónico y poesÃa para enfrentar la crisis en la novela Democracia de Pablo Gutiérrez
En esta tesina se investiga cómo la crisis económica y social de España se refleja en la literatura española, a través de un estudio de la novela Democracia (2012) de Pablo Gutiérrez. Esta obra es tratada dentro del contexto de una corriente cultural nacida del movimiento ciudadano 15-M, que se une al discurso contrahegemónico de los indignados para describir la realidad social que está atravesando el paÃs: un discurso muy diferente al que vienen utilizado los dos gobiernos de la crisis y los medios de comunicación masivos durante todo este perÃodo. La novela descubre un mensaje de denuncia social hacia el sistema económico y polÃtico imperantes, a la vez que critica el discurso oficial dominante. Todo ello lo hace, asimismo, siguiendo un guión muy parecido al utilizado en las redes sociales para denunciar los abusos de poder, es decir, a través de contar la historia de vida de los más perjudicados, en este caso de su personaje principal Marco. Además, trata este estudio los recursos narrativos y literarios utilizados por Gutiérrez para dar fuerza a su mensaje. A través de una lectura que se transforma en una experiencia audio-visual y la incursión polifacética de la poesÃa, acaba el texto revelando una sugerencia para salir de la crisis: un reemplazo de los valores consumistas que dirigen nuestras vidas y un vuelco al mundo de la cultura como fórmula para paliar en parte los efectos de la actual y de otras futuras crisis
A bottom-up robot architecture based on learnt behaviors driven design
Draft previo a la revisión. El artÃculo definitivo tiene derechos de autor.In reactive layers of robotic architectures, behaviors should learn their operation from experience, following the trends of modern intelligence theories. A Case Based Reasoning (CBR) reactive layer could allow to achieve this goal but, as complexity of behaviors increases, thecurse of dimensionality arises: a too high amount of cases in the behaviors casebases deteriorate response times so robot's reactiveness is finally too slow for a good performance. In this work we analyze this problem
and propose some improvements in the traditional CBR structure and retrieval phase, at reactive level, to reduce the impact of scalability problems when facing complex behaviors design.Universidad de Málaga. Campus de Excelencia Internacional AndalucÃa Tech
Servicios que ponen las personas en primer lugar de la atención
1 Introducción- conceptual.
2 Los orÃgenes
3 Efectos del movimiento pro-recuperación; En usuarios, profesionales y en la relación
4 Retos para facilitar la atención orientada a recuperación. –puntos crÃticos
5 ConclusionesN
Assessment of the optical efficiency of a primary lens to be used in a CPV system
This article summarizes experimental methods to evaluate the performance and to assess the efficiency of a lens that will be used as primary optics in a concentrating photovoltaic system comprising multijunction solar cells. The methods are classified into two groups: those intended to quantify the transmission losses and those that estimate the size and shape of the light spot. In addition, the optical efficiency definition is reviewed and a systematic procedure to evaluate it is proposed
The reactions \gwl\ and \gzl\ in strongly interacting theories
Building on recent phenomenology of \gpi, we discuss the expectation for two
photon production of longitudinal gauge boson pairs in technicolor
theories. The treatment involves a matching of dispersive techniques with the
methodology of chiral perturbation theory.Comment: 25 LaTeX pages (incl. 10 figures on 7 pages, also in plain LaTeX,
also available from the authors in PostScript form via regular E_mail),
UMHEP-39
- …