Safety and Outcomes in Multiplane Facial Rejuvenation with Tranexamic Acid: A Cohort Study

Background: Tranexamic acid (TXA) has demonstrated promising outcomes in plastic surgery. Our aim was to assess the effect of TXA in intraoperative bleeding, operative time, and complications among patients undergoing facial surgical procedures. Methods: A retrospective cohort study of patients who underwent multiplane facial rhytidectomy from January 2018 to September 2022 at the Clinica Ziegler, Lima, Peru. Patients were divided into two groups according to the use of intravenous plus local infiltration of TXA. We performed the chi square test to assess associations among categorical variables, the Student t test and Mann-Whitney U test for categorical with continuous variables, and Pearson correlation for quantitative variables. Results: A total of 100 patients were included with 50 patients in each group. The median age was 59.5 years and the majority were women (88%). The median operative time was 288.5 minutes. The TXA group presented less intraoperative bleeding (40 versus 90 mL, P < 0.05) and shorter operative time (237 versus 353 minutes, P < 0.05); no differences in the development of hematoma (2% versus 12%, P = 0.11), less ecchymosis (2% versus 36%, P < 0.05), edema (2% versus 100%, P < 0.05), and time to drain removal (3 versus 6 days, P < 0.05). Conclusions: TXA improves the short- and long-term outcomes of patients who undergo multiplane facial rhytidectomy. It also decreases intraoperative bleeding by more than half and reduces the operative time by one third. Moreover, patients receiving TXA presented significantly less ecchymosis, edema, and time to drain removal.Revisión por pare

Quintessence Restrictions on Negative Power and Condensate Potentials

We study the cosmological evolution of scalar fields that arise from a phase transition at some energy scale \Lm_c. We focus on negative power potentials given by V=c\Lm_c^{4+n}\phi^{-n} and restrict the cosmological viable values of \Lm_c and $n$. We make a complete analysis of $V$ and impose $SN1a$ conditions on the different cosmological parameters. The cosmological observations ruled out models where the scalar field has reached its attractor solution. For models where this is not the case, the analytic approximated solutions are not good enough to determine whether a specific model is phenomenologically viable or not and the full differential equations must be numerically solved. The results are not fine tuned since a change of 45% on the initial conditions does not spoil the final results. We also determine the values of $N_c, N_f$ that give a condensation scale \Lm_c consistent with gauge coupling unification, leaving only four models that satisfy unification and SN1a constraints.Comment: 15 pages, LaTeX, 8 Figures. Minor changes in text, a discussion on initial conditions added (accepted in Phys.Rev.D

Magnetic Reconnection With a Fast Perpendicular Sheared Flow

Magnetic reconnection at the Earth\u27s low‐latitude magnetopause near the flank region is likely associated with a large sheared flow, being frequently quasi‐perpendicular to the antiparallel magnetic field components. The magnitude of a fast sheared flow can be super‐Alfvénic and even overcome the local fast mode speed. A scaling analysis implies a contradiction between the Walén relation and the balance of the total pressure for magnetic reconnection with a supercritical perpendicular sheared flow. This study uses one‐ and two‐dimensional magnetohydrodynamic (MHD) simulations to demonstrate that the traditional reconnection layer violates the Walén relation but still maintains the total pressure balance in such a configuration. The results show an expanded outflow region, consistent with the presence of divergent normal flow, and a significant decrease of the plasma density as well as the thermal pressure in the outflow region. In contrast, the magnitude of the magnetic field in the outflow region matches the value in the inflow region due to the total pressure balance, which is fundamentally different from the classical reconnection layer under sub‐Alfvénic perpendicular sheared flow conditions. In three‐dimensional geometry, the fast sheared flow without being stabilized by the magnetic field is expected to be Kelvin‐Helmholtz unstable. However, the three‐dimensional MHD simulation suggests that such structure can be KH stable. Although, the presence of surface waves modulates some two‐dimensional features, the major characteristics of the expanded outflow region are likely to be observed by in situ satellites

Tau protein, A beta 42 and S-100B protein in cerebrospinal fluid of patients with dementia with Lewy bodies

The intra vitam diagnosis of dementia with Lewy bodies (DLB) is still based on clinical grounds. So far no technical investigations have been available to support this diagnosis. As for tau protein and beta-amyloid((1-42)) (Abeta42), promising results for the diagnosis of Alzheimer's disease ( AD) have been reported; we evaluated these markers and S-100B protein in cerebrospinal fluid (CSF), using a set of commercially available assays, of 71 patients with DLB, 67 patients with AD and 41 nondemented controls (NDC) for their differential diagnostic relevance. Patients with DLB showed significantly lower tau protein values compared to AD but with a high overlap of values. More prominent differences were observed in the comparison of DLB patients with all three clinical core features and AD patients. Abeta42 levels were decreased in the DLB and AD groups versus NDC, without significant subgroup differences. S-100B levels were not significantly different between the groups. Tau protein levels in CSF may contribute to the clinical distinction between DLB and AD, but the value of the markers is still limited especially due to mixed pathology. We conclude that more specific markers have to be established for the differentiation of these diseases. Copyright (C) 2005 S. Karger AG, Basel

Liderazgo transformacional y gestión educativa del director en el clima institucional de las II.EE. de la UGEL 15, Distrito San Antonio - Huarochirí, 2016

El presente trabajo de investigación tuvo como objetivo determinar cómo influye el liderazgo transformacional y gestión educativa del director en el clima institucional de las II.EE. de la UGEL 15, Distrito San Antonio - Huarochirí, 2016. Los instrumentos que se utilizaron fueron cuestionarios en escala de Likert para las variables liderazgo transformacional, gestión educativa y el clima institucional. Estos instrumentos fueron sometidos a los análisis respectivos de confiabilidad y validez, que determinaron que los cuestionarios son válidos y confiables. La investigación realizada fue de enfoque cuantitativo, de tipo básica, con un diseño no experimental, de regresión logística multinomial de corte transversal. La muestra estuvo constituida por 1 16 Docentes de ambos sexos de las Instituciones Educativas de la UGEL 1 5, Distrito San Antonio, Huarochirí, 2016, el muestreo fue probabilístico. La metodología empleada es el método de investigación científica de enfoque hipotético deductivo. Los resultados de la investigación demuestran que el clima institucional se debe al 6.20% del liderazgo transformacional y gestión educativa del Director, en las II.EE. de la UGEL 15, Distrito San Antonio - Huarochirí, 201

Interaction of Magnetic Reconnection and Kelvin-Helmholtz Modes for Large Magnetic Shear: 1. Kelvin-Helmholtz Trigger

At the Earth\u27s magnetopause, both magnetic reconnection and the Kelvin‐Helmholtz (KH) instability can operate simultaneously for southward interplanetary magnetic field conditions. The dynamic evolution of such a system can be expected to depend on the importance of KH wave evolution versus reconnection and therefore on the respective initial perturbations. In this study, a series of local three‐dimensional MHD and Hall MHD simulations are carried out to investigate the situation where the Kelvin‐Helmholtz instability is initially the primary process. It is demonstrated that magnetic reconnection is driven and strongly modified by nonlinear KH waves. The highest reconnection rate is close to the Petschek rate, but the total open flux is limited by the size of the nonlinear KH wave. Most of the total open magnetic flux has no flux rope structure and originates from reconnection at thin current layers which connect adjacent vortices. In contrast, complex flux ropes generated by patchy reconnection within the KH vortices dominate the vicinity of the equatorial plane; however, the associated open flux with flux ropes is a minor contribution to the total open flux. Although the presence of Hall physics leads to a fast early increase of the reconnection rate, the maximum reconnection rate and the total amount of open magnetic flux at saturation are the same as in the MHD case

An Optimal Decision Procedure for MPNL over the Integers

Interval temporal logics provide a natural framework for qualitative and quantitative temporal reason- ing over interval structures, where the truth of formulae is defined over intervals rather than points. In this paper, we study the complexity of the satisfiability problem for Metric Propositional Neigh- borhood Logic (MPNL). MPNL features two modalities to access intervals "to the left" and "to the right" of the current one, respectively, plus an infinite set of length constraints. MPNL, interpreted over the naturals, has been recently shown to be decidable by a doubly exponential procedure. We improve such a result by proving that MPNL is actually EXPSPACE-complete (even when length constraints are encoded in binary), when interpreted over finite structures, the naturals, and the in- tegers, by developing an EXPSPACE decision procedure for MPNL over the integers, which can be easily tailored to finite linear orders and the naturals (EXPSPACE-hardness was already known).Comment: In Proceedings GandALF 2011, arXiv:1106.081

Identificación de riesgos laborales y propuestas de mitigación y control para el Puerto Pesquero de Anconcito, del cantón Salinas, Provincia de Santa Elena.

Este documento contiene archivo en PDF.Los trabajadores del puerto pesquero de Anconcito ubicado en la Provincia de Santa Elena, en sus puestos de trabajo presentan múltiples riesgos en cada una actividades laborales, lo que ha ocasionado varios accidentes y están ocasionando enfermedades profesionales haciendo que el personal falte a su trabajo teniendo esta investigación como objetivo la identificación de los riesgos en cada cargo para mitigar y mantener un control en estos riesgos para lo cual se utilizó como metodología para identificar los riesgos la matriz de riesgos INSHT de España con lo cual se evidencio que el riesgo de caída es el mayor probabilidad de ocurrir, los cortes con herramientas corto punzantes, inhalación de vapores químicos, exposición a enfermedades biológicos, además se utilizó una encuesta para obtener un mejor resultado para comprobar si se debe de implementar la seguridad y salud ocupacional en el personal que labora en las instalaciones físicas del puerto nos muestra que el 90% no conocen del tema de seguridad industrial solo el 10% menciona que sabe por lo que se concluye que a los trabajadores que laboran en las instalaciones del puerto se les implemente un plan de prevención de riesgos laborales.Workers in the fishing port of Anconcito located in the Province of Santa Elena, in their jobs have multiple risks in each work activity, which has caused several accidents and are causing occupational diseases making staff miss work having this research aimed at identifying risks at each position to mitigate and keep a check on these risks to which was used as a methodology to identify risks the Risk Matrix INSHT of Spain with which I was shown that the risk of falling is the more likely to occur, cuts with sharp short tools, inhalation of chemical fumes, exposure to biological diseases, and a survey was used to obtain a better result to check whether to implement occupational safety and health personnel working in the physical facilities of the port shows that 90% did not know the subject of industrial safety only 10% mentioned that knows what it is concluded that the workers at the port facilities need to implement a plan for risk prevention labor

Real-time logo detection in brand-related social media images

This paper presents a work consisting in using deep convolutional neural networks (CNNs) for real-time logo detection in brand-related social media images. The final goal is to facilitate searching and discovering user-generated content (UGC) with potential value for digital marketing tasks. The images are captured in real time and automatically annotated with two CNNs designed for object detection, SSD InceptionV2 and Faster Atrous InceptionV4 (that provides better performance on small objects). We report experiments with 2 real brands, Estrella Damm and Futbol Club Barcelona. We examine the impact of different configurations and derive conclusions aiming to pave the way towards systematic and optimized methodologies for automatic logo detection in UGC.This work is partially supported by the Spanish Ministry of Economy and Competitivity under contract TIN2015-65316-P and by the SGR programme (2014- SGR-1051 and 2017-SGR-962) of the Catalan Government.Peer ReviewedPostprint (author's final draft

Natural Quintessence with Gauge Coupling Unification

We show that a positive accelerating universe can be obtained simply by the dynamics of a non-abelian gauge group. It is the condensates of the chiral fields that obtain a negative power potential, below the condensation scale, and allow for a quintessence interpretation of these fields. The only free parameters in this model are $N_c$ and $N_f$ and the number of dynamically gauge singlet bilinear fields $\phi$ generated below the condensation scale. We show that it is possible to have unification of all coupling constants, including the standard and non standard model couplings, while having an acceptable phenomenology of $\phi$ as the cosmological constant. This is done without any fine tuning of the initial conditions. The problem of coincidence (why the universe has only recently started an accelerating period) is not solved but it is put at the same level as what the particle content of the standard model is.Comment: minor changes(discussion on field normalization included), reference added, accepted in Phy.Rev.Lett., 5 pages,LateX,2 Figure