1,096 research outputs found
Espondilitis tuberculosa no es una metástasis vertebral: diagnóstico diferencial y tratamiento quirúrgico. A propósito de un caso
Presentamos el caso de una paciente con dorsalgia y clínica neurológica de varios meses de evolución
que ante las pruebas de imagen fue erróneamente diagnosticada de metástasis vertebral sin confirmación previa
con biopsia. El deterioro progresivo neurológico y las nuevas pruebas de imagen confirmaron el diagnóstico de tuberculosis
vertebral. La paciente fue tratada mediante curetaje, desbridamiento, fusión intersomática y osteosíntesis anterior
además del tratamiento médico. Hubo una recuperación neurológica de la función sensitiva, motora y esfinteriana
prácticamente completa al mes de la intervención. Tras 20 meses de evolución la paciente está asintomática sin
evidencia de progresión de la enfermedadWe report a patient with back pain and neurological symptoms several months of evolution to the test
image was wrongly diagnosed with spinal metastases without prior confirmation with biopsy. The progressive deterioration
of neurological and new imaging confirmed the diagnosis of spinal tuberculosis. The patient was treated by
curettage, debridement, anterior interbody fusion and internal fixation in addition to medical treatment. There neurological
recovery of sensory function, motor and sphincter almost complete month after the intervention. After 20
months of evolution, the patient is asymptomatic without evidence of disease progressio
Hidatidosis ósea: nuestra casuística
Se revisan los resultados de 16 casos de hidatidosis musculoesquelética
tratados en la Unidad de Sépticos del Aparato Locomotor del Hospital Universitario "La Fe" de
Valencia en el período 1972-1989.
Las dificultades diagnósticas fueron importantes, siendo en 5 de los casos un diagnóstico
operatorio. Analizados los métodos de tratamiento se llega a la conclusión de que la curación
definitiva sólo se consigue con la resección completa y amplia de la lesión. Los curetajes,
acompañados o no de aseptizaciones químicas, suelen dar recidivas. Se recomienda combinar
el tratamiento médico con el quirúrgico.The results of 16 cases of musculoskeletal hydatidosis treated in
the locomotive Apparatus Septic Unit of the Valencia University Hospital "La Fe"
between 1972 and 1989 wer e reviewed.
The diagnostic difficulties wer e marked and 5 cases wer e diagnosed at surgery.
After analyzing the therapeutical approaches, it is drawn the conclusion that a
definitive healing is achieved only when an extensive and complete resection is
done. Curettage, with and without chemical aseptization, generally results in recurrence.
A combined medical and surgical treatment is recommended
A Direct Real-Time Observation of Anion Intercalation in Graphite Process and Its Fully Reversibility by SAXS/WAXS Techniques
The process of anion intercalation in graphite and its reversibility plays a crucial role in the next generation energy-storage devices. Herein the reaction mechanism of the aluminum graphite dual ion cell by operando X-ray scattering from small angles to wide angles is investigated. The staging behavior of the graphite intercalation compound (GIC) formation, its phase transitions, and its reversible process are observed for the first time by directly measuring the repeated intercalation distance, along with the microporosity of the cathode graphite. The investigation demonstrates complete reversibility of the electrochemical intercalation process, alongside nano- and micro-structural reorganization of natural graphite induced by intercalation. This work represents a new insight into thermodynamic aspects taking place during intermediate phase transitions in the GIC formation
Microchimerism after heart transplantation: prevalence, predisposing factors, natural history, and prognosis
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Effect of water-soluble polymers, polyethylene glycol and poly(vinylpyrrolidone),on the gelation of aqueous micellar solutions of Pluronic copolymer F127
The micellization of F127 (E98P67E98) in dilute aqueous solutions of polyethylene glycol (PEG6000 and
PEG35000) and poly(vinylpyrrolidone) (PVP K30 and PVP K90) is studied. The average hydrodynamic
radius (rh,app) obtained from the dynamic light scattering technique increased with increase in PEG concentration
but decreased on addition of PVP, results which are consistent with interaction of the micelles
with PEG and the formation of micelles clusters, but no such interaction occurs with PVP. Tube inversion
was used to determine the onset of gelation. The critical concentration of F127 for gelation increased on
addition of PEG and of PVP K30 but decreased on addition of PVP K90. Small-angle X-ray scattering
(SAXS) was used to show that the 30 wt% F127 gel structure (fcc) was independent of polymer type
and concentration, as was the d-spacing and so the micelle hard-sphere radius. The maximum elastic
modulus (G0
max) of 30 wt% F127 decreased from its value for water alone as PEG was added, but was little
changed by adding PVP. These results are consistent with the packed-micelles in the 30 wt% F127 gel
being effectively isolated from the polymer solution on the microscale while, especially for the PEG, being
mixed on the macroscale
THE ACCUSED IS ENTERING THE COURTROOM: THE LIVE-TWEETING OF A MURDER TRIAL.
© 2017 Informa UK Limited, trading as Taylor & Francis GroupThe use of social media is now widely accepted within journalism as an outlet for news information. Live tweeting of unfolding events is standard practice. In March 2014, Oscar Pistorius went on trial in the Gauteng High Court for murder. Hundreds of journalists present began live-tweeting coverage, an unprecedented combination of international interest, permission to use technology and access which resulted in massive streams of consciousness reports of events as they unfolded. Based on a corpus of Twitter feeds of twenty-four journalists covering the trial, this study analyses the content and strategies of these feeds in order to present an understanding of how microblogging is used as a live reporting tool. This study shows the development of standardised language and strategies in reporting on Twitter, concluding that journalists adopt a narrow range of approaches, with no significant variation in terms of gender, location, or medium. This is in contrast to earlier studies in the field (Awad, 2006, Hedman, 2015; Kothari, 2010; Lariscy, Avery, Sweetser, & Howes, 2009 Lasorsa, 2012; Lasorsa, Lewis, & Holton, 2011; Sigal, 1999, Vis, 2013).Peer reviewe
Convergence calls: multimedia storytelling at British news websites
This article uses qualitative interviews with senior editors and managers from a selection of the UK's national online news providers to describe and analyse their current experimentation with multimedia and video storytelling. The results show that, in a period of declining newspaper readership and TV news viewing, editors are keen to embrace new technologies, which are seen as being part of the future of news. At the same time, text is still reported to be the cornerstone for news websites, leading to changes in the grammar and function of news video when used online. The economic rationale for convergence is examined and the article investigates the partnerships sites have entered into in order to be able to serve their audience with video content. In-house video is complementing syndicated content, and the authors examine the resulting developments in newsroom training and recruitment practices. The article provides journalism and interactive media scholars with case studies on the changes taking place in newsrooms as a result of the shift towards multimedia, multiplatform news consumption
Process Calculi à la Bird-Meertens
This paper is an attempt to apply the reasoning principles and calculational style underlying the so-called Bird-Meertens formalism to the design of process calculi, parametrized by a behaviour model. In particular, basically equational and pointfree proofs of process properties are given, relying on the universal characterisation of anamorphisms and therefore avoiding the explicit construction of bisimulations. The developed calculi can be directly implemented on a functional language supporting coinductive types, which provides a convenient way to prototype processes and assess alternative design decisions.(undefined
Dealing with the mess (we made): Unraveling hybridity, normativity, and complexity in journalism studies
In this article, we discuss the rise and use of the concept of hybridity in journalism studies. Hybridity afforded a meaningful intervention in a discipline that had the tendency to focus on a stabilized and homogeneous understanding of the field. Nonetheless, we now need to reconsider its deployment, as it only partially allows us to address and understand the developments in journalism. We argue that if scholarship is to move forward in a productive manner, we need, rather than denote everything that is complex as hybrid, to develop new approaches to our object of study. Ultimately, this is an open invitation to the field to adopt experientialist, practice-based approaches that help us overcome the ultimately limited binary dualities that have long governed our theoretical and empirical work in the field
Citizen participation in news
The process of producing news has changed significantly due to the advent of the Web, which has enabled the increasing involvement of citizens in news production. This trend has been given many names, including participatory journalism, produsage, and crowd-sourced journalism, but these terms are ambiguous and have been applied inconsistently, making comparison of news systems difficult. In particular, it is problematic to distinguish the levels of citizen involvement, and therefore the extent to which news production has genuinely been opened up. In this paper we perform an analysis of 32 online news systems, comparing them in terms of how much power they give to citizens at each stage of the news production process. Our analysis reveals a diverse landscape of news systems and shows that they defy simplistic categorisation, but it also provides the means to compare different approaches in a systematic and meaningful way. We combine this with four case studies of individual stories to explore the ways that news stories can move and evolve across this landscape. Our conclusions are that online news systems are complex and interdependent, and that most do not involve citizens to the extent that the terms used to describe them imply
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