56 research outputs found
Facial nerve schwannoma presenting as mixed hearing loss, tinnitus, and dizziness
Introduction: Facial nerve involvement in skull base tumors is quite a common finding. However, facial nerve tumors are rare. Facial nerve schwannomas can be observed in 75% of facial nerve tumors. They are slowly growing, benign tumors that can arise from any segment of the facial nerve—from the cerebellopontine angle to the parotid gland. The most common clinical presentation in patients with an intratemporal schwannoma is a slowly progressing facial nerve dysfunction. Less frequently, a fluctuating or a sudden facial nerve weakness can be seen. Hearing loss, tinnitus, and dizziness can also be observed in facial nerve schwannomas. Hearing loss can be conductive, sensorineural or mixed, depending on the size and site of the tumor that can extend into the middle ear or erode the cochlea. Tumors of the internal auditory canal or of the cerebellopontine angle usually lead to a retrocochlear sensorineural hearing loss.Case Presentation: The authors present the case of a 19-year-old man suffering from a left-sided hearing loss, tinnitus and dizziness without any facial nerve dysfunction.Results: The patient underwent computed tomography (CT) scan and magnetic resonance imaging (MRI) with gadolinium to investigate the middle ear and internal auditory canal. A left facial nerve schwannoma, involving the geniculated ganglion, was diagnosed.Conclusion: Even if the most common symptoms of facial nerve schwannomas are facial nerve-related symptoms, we should always keep in mind that hearing-related and equilibrium-related symptoms can be the first presenting symptoms
La respuesta italiana frente al COVID-19 y la necesidad de la cooperación internacional
The article proposes a first approximation to the international cooperation response against the novel coronavirus disease 2019 (COVID-19) pandemic. In particular, the paper aims to analyze the two fundamental strategies against the virus, with a focus on the Italian reaction and its consequences on European cooperation. The pandemic has accelerated some conflicts and claimed deeper international cooperation on health and the attempt to create a "community of shared health" for mankind.El artículo propone una primera aproximación a la respuesta de la cooperación internacional contra la pandemia de coronavirus (COVID-19). En particular, el trabajo tiene como objetivo analizar las dos estrategias fundamentales contra el virus, centrándose en la reacción italiana y sus consecuencias en la cooperación europea. La pandemia ha acelerado algunos conflictos y ha reclamado una cooperación internacional más profunda en materia de salud y el intento de crear una "comunidad de salud compartida" para la humanidad.Instituto de Relaciones Internacionale
La respuesta italiana frente al COVID-19 y la necesidad de la cooperación internacional
The article proposes a first approximation to the international cooperation response against the novel coronavirus disease 2019 (COVID-19) pandemic. In particular, the paper aims to analyze the two fundamental strategies against the virus, with a focus on the Italian reaction and its consequences on European cooperation. The pandemic has accelerated some conflicts and claimed deeper international cooperation on health and the attempt to create a "community of shared health" for mankind.El artículo propone una primera aproximación a la respuesta de la cooperación internacional contra la pandemia de coronavirus (COVID-19). En particular, el trabajo tiene como objetivo analizar las dos estrategias fundamentales contra el virus, centrándose en la reacción italiana y sus consecuencias en la cooperación europea. La pandemia ha acelerado algunos conflictos y ha reclamado una cooperación internacional más profunda en materia de salud y el intento de crear una "comunidad de salud compartida" para la humanidad.Instituto de Relaciones Internacionale
Design study of a photon beamline for a soft X-ray FEL driven by high gradient acceleration at EuPRAXIA@SPARC_LAB
We are proposing a facility based on high gradient acceleration via x-band RF
structures and plasma acceleration. We plan to reach an electron energy of the
order of 1 GeV, suitable to drive a Free Electron Laser for applications in the
so called "water window" (2 - 4 nm). A conceptual design of the beamline, from
the photon beam from the undulators to the user experimental chamber, mainly
focusing on diagnostic, manipulation and transport of the radiation is
presented and discussed. We also briefly outline a user end station for
coherent imaging, laser ablation and pump-probe experiments
La respuesta italiana frente al COVID-19 y la necesidad de la cooperación internacional
The article proposes a first approximation to the international cooperation response against the novel coronavirus disease 2019 (COVID-19) pandemic. In particular, the paper aims to analyze the two fundamental strategies against the virus, with a focus on the Italian reaction and its consequences on European cooperation. The pandemic has accelerated some conflicts and claimed deeper international cooperation on health and the attempt to create a "community of shared health" for mankind.El artículo propone una primera aproximación a la respuesta de cooperación internacional contra la nueva pandemia de la enfermedad por coronavirus 2019 (COVID-19). En particular, el documento tiene como objetivo analizar las dos estrategias fundamentales contra el virus, con un enfoque en la reacción italiana y sus consecuencias en la cooperación europea. La pandemia ha acelerado algunos conflictos y ha reclamado una cooperación internacional más profunda en materia de salud y el intento de crear una "comunidad de salud compartida" para la humanidad
Moving Toward a Strategy for Addressing Climate Displacement of Marine Resources: A Proof-of-Concept
Realistic predictions of climate change effects on natural resources are central to adaptation policies that try to reduce these impacts. However, most current forecasting approaches do not incorporate species-specific, process-based biological information, which limits their ability to inform actionable strategies. Mechanistic approaches, incorporating quantitative information on functional traits, can potentially predict species- and population-specific responses that result from the cumulative impacts of small-scale processes acting at the organismal level, and can be used to infer population-level dynamics and inform natural resources management. Here we present a proof-of-concept study using the European anchovy as a model species that shows how a trait-based, mechanistic species distribution model can be used to explore the vulnerability of marine species to environmental changes, producing quantitative outputs useful for informing fisheries management. We crossed scenarios of temperature and food to generate quantitative maps of selected mechanistic model outcomes (e.g., Maximum Length and Total Reproductive Output). These results highlight changing patterns of source and sink spawning areas as well as the incidence of reproductive failure. This study demonstrates that model predictions based on functional traits can reduce the degree of uncertainty when forecasting future trends of fish stocks. However, to be effective they must be based on high spatial- and temporal resolution environmental data. Such a sensitive and spatially explicit predictive approach may be used to inform more effective adaptive management strategies of resources in novel climatic conditions
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