216 research outputs found
Estudio comparativo de la cavidad de acceso radicular en conductos curvos con limas de nĂquel-titanio y taladros de acero inoxidable
El propĂłsito de este estudio fue comparar la cantidad de dentina radicular removida y evaluar el mantenimiento de la forma del conducto tras la instrumentaciĂłn de los dos tercios coronarios radiculares, utilizando instrumentos de acero inoxidable (taladros de Gates Glidden) y de nĂqueltitanio (limas GT Flare y limas Orifice Shaper). Un total de 42 dientes humanos extraĂdos con conductos radiculares curvos fueron divididos en tres grupos. Los conductos se instrumentaron mecánicamente usando taladros de Gates Glidden, limas Orifice Shaper o GT Flare con la tĂ©cnica corono-apical. Este estudio se realizĂł siguiendo la tĂ©cnica de Bramante modificada. Las secciones transversales de cada conducto fueron efectuadas a tres niveles horizontales diferentes (a 2, 4 y 6mm de su inicio en la cámara). Antes y despuĂ©s de la instrumentaciĂłn fueron observados y fotografiados para luego ser medidos. A cada nivel se valoraron dos parámetros, el mantenimiento de la forma original del conducto y la cantidad de dentina removida. El análisis estadĂstico revelĂł que existĂan diferencias estadĂsticamente significativas (p<0,05) a nivel de los cortes a 4 y 6 mm en la cara interna del conducto; mientras que la preparaciĂłn del mismo más prevalente fue excĂ©ntrica sin ensanchar todas las paredes del conducto
CAFE-GAN: Arbitrary Face Attribute Editing with Complementary Attention Feature
The goal of face attribute editing is altering a facial image according to
given target attributes such as hair color, mustache, gender, etc. It belongs
to the image-to-image domain transfer problem with a set of attributes
considered as a distinctive domain. There have been some works in multi-domain
transfer problem focusing on facial attribute editing employing Generative
Adversarial Network (GAN). These methods have reported some successes but they
also result in unintended changes in facial regions - meaning the generator
alters regions unrelated to the specified attributes. To address this
unintended altering problem, we propose a novel GAN model which is designed to
edit only the parts of a face pertinent to the target attributes by the concept
of Complementary Attention Feature (CAFE). CAFE identifies the facial regions
to be transformed by considering both target attributes as well as
complementary attributes, which we define as those attributes absent in the
input facial image. In addition, we introduce a complementary feature matching
to help in training the generator for utilizing the spatial information of
attributes. Effectiveness of the proposed method is demonstrated by analysis
and comparison study with state-of-the-art methods
Hipoplasia cerebelar en el gato
En el presente trabajo, y a propĂłsito de un caso clĂnico, se efectĂşa una revisiĂłn completa de la hipoplasia cerebelar en el gato, incluyendo la anatomĂa, embriologĂa y funciĂłn del cerebelo, el cuadro clĂnico y lesional que se presenta, asĂ como el diagnĂłstico, el posible tratamiento y la prevenciĂłn.In this paper, on a case, a complete review about cerebellar hypoplasia in cat is made. It includes cerebellum anatomy, embriology and function, clinical findings, lesions and diagnosis, possible treatment and the prevention
Gene expression profiling en association with prion-related lesions in the medulla oblongata of symptomatic natural scrapie animals.
The pathogenesis of natural scrapie and other prion diseases remains unclear. Examining transcriptome variations in infected versus control animals may highlight new genes potentially involved in some of the molecular mechanisms of prion-induced pathology. The aim of this work was to identify disease-associated alterations in the gene expression profiles of the caudal medulla oblongata (MO) in sheep presenting the symptomatic phase of natural scrapie. The gene expression patterns in the MO from 7 sheep that had been naturally infected with scrapie were compared with 6 controls using a Central Veterinary Institute (CVI) custom designed 4Ă—44K microarray. The microarray consisted of a probe set on the previously sequenced ovine tissue library by CVI and was supplemented with all of the Ovis aries transcripts that are currently publicly available. Over 350 probe sets displayed greater than 2-fold changes in expression. We identified 148 genes from these probes, many of which encode proteins that are involved in the immune response, ion transport, cell adhesion, and transcription. Our results confirm previously published gene expression changes that were observed in murine models with induced scrapie. Moreover, we have identified new genes that exhibit differential expression in scrapie and could be involved in prion neuropathology. Finally, we have investigated the relationship between gene expression profiles and the appearance of the main scrapie-related lesions, including prion protein deposition, gliosis and spongiosis. In this context, the potential impacts of these gene expression changes in the MO on scrapie development are discussed
Antiviral activity of maca (Lepidium meyenii) against human influenza virus
Objective: To investigate antiviral activity of maca to reduce viral load in kidney (MDCK) cells infected with influenza type A and B viruses (Flu-A and MFalud-inB-, Dreasrpbeyc ctiavneilny)e. Methods: Maca were extracted with methanol (1:2, v/v). The cell viability and toxicity of the eaxgtariancstts Fwluer-eA e avnaldu aFtleud- oBn v MirDusCeKs cwealsls a usssianyge dm uetshinogd aM TteTs ta sfosar yd. eAtenrtmiviinrainl ga ctthiev itiyn hoifb citoimonp oouf nthdes cytopathic effect on cell culture and multiplex RT-PCR. Results: The methanol extract of maca showed low cytotoxicity and inhibited influenza-induced cytopathic effect significantly, while viral load was reduced via inhibition of viral growth in MDCK infected cells. Maca contains potent inhibitors of Flu-A and Flu-B with a selectivity index [cytotoxic concentration 50%/IC50] of 157.4 and 110.5, respectively. Conclusions: In vitro assays demonstrated that maca has antiviral activity not only against Flu-A (like most antiviral agents) but also Flu-B viruses, providing remarkable therapeutic benefits.Financial support of this study was provided by AECID
grants (PCI: C/033641/10) and AGAUR (MAT2009-11503,
MAT2012-36205, 2009SGR-1208). JDVM support was provided
by 1st Concurso Incentivo a la InvestigaciĂłn de la
Universidad Peruana de Ciencias Aplicadas, Lima, Peru.RevisiĂłn por pare
Toward Fine-grained Facial Expression Manipulation
Facial expression manipulation aims at editing facial expression with a given
condition. Previous methods edit an input image under the guidance of a
discrete emotion label or absolute condition (e.g., facial action units) to
possess the desired expression. However, these methods either suffer from
changing condition-irrelevant regions or are inefficient for fine-grained
editing. In this study, we take these two objectives into consideration and
propose a novel method. First, we replace continuous absolute condition with
relative condition, specifically, relative action units. With relative action
units, the generator learns to only transform regions of interest which are
specified by non-zero-valued relative AUs. Second, our generator is built on
U-Net but strengthened by Multi-Scale Feature Fusion (MSF) mechanism for
high-quality expression editing purposes. Extensive experiments on both
quantitative and qualitative evaluation demonstrate the improvements of our
proposed approach compared to the state-of-the-art expression editing methods.
Code is available at \url{https://github.com/junleen/Expression-manipulator}
Estudi etiològic del brot epidèmic gripal observat a Barcelona durant el mes de febrer de 1968
Nocardiosis en un perro
Se describe un caso de nocardiosis en un perro. Se presentan y discuten el cuadro clĂnico y los hallazgos microbiolĂłgicos, ana tomo patolĂłgicos e histopatolĂłgicos.A case of canine nocardiosis is described. Its clinical, microbiological, pathological and histopathological findings are presented and discussed
P20-06. Study of viral variability evolution in patients submitted to a therapeutic vaccine based on autologous dendritic cells pulsed with autologous HIV-1
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