Search results for "SMIS"
showing 10 items of 2316 documents
Aerosol and droplet generation during intubation and normal breathing: a simulation study
2021
COVID-19 pacientu aprūpē var būt nepieciešama intubācija, kas ir aerosola un pilienu ģenerējoša procedūra, šādi palielinot vīrusa izplatības iespēju. Intubāciju ieteicams veikt pieredzējušam speciālistam labākai balss saišu vizualizācijai un ātrākai procedūras veikšanai, kas tādējādi samazinātu aerosola un pilienu veidošanās laiku. Šī pētījuma mērķis ir izpētīt pilienu un aerosola daudzumu, kas rodas normālas elpošanas laikā, kā arī salīdzināt intubācijas ilgumu, kontakta kontamināciju, pilienu izplatību un aerosolizāciju, kas rodas intubāciju veicot pieredzējušam enesteziologan un anestezioloģijas pirmā gada rezidentam. Metodes Eksperimentā I AMBU elpināšanas maiss tika piestiprināts manek…
Eco-friendly cavity-containing iron oxides prepared by mild routes as very efficient catalysts for the total oxidation of VOCs
2018
Iron oxides (FeOx) are non-toxic, non-expensive and environmentally friendly compounds, which makes them good candidates for many industrial applications, among them catalysis. In the present article five catalysts based on FeOx were synthesized by mild routes: hydrothermal in subcritical and supercritical conditions (Fe-HT, Few200, Few450) and solvothermal (Fe-ST1 and Fe-ST2). The catalytic activity of these catalysts was studied for the total oxidation of toluene using very demanding conditions with high space velocities and including water and CO2 in the feed. The samples were characterized by X-ray diffraction (XRD), scanning and high-resolution transmission electron microscopy (SEM and…
Chemically Selective Imaging of Individual Bonds through Scanning Electron Energy-Loss Spectroscopy : Disulfide Bridges Linking Gold Nanoclusters
2020
As proof-of-principle of chemically selective, spatially resolved imaging of individual bonds, we carry out electron energy-loss spectroscopy in a scanning transmission electron microscopy instrument on atomically precise, thiolate-coated gold nanoclusters linked with 5,5′-bis(mercaptomethyl)-2,2′-bipyridine dithiol ligands. The images allow the identification of bridging disulfide bonds (R–S–S–R) between clusters, and X-ray photoelectron spectra support the finding. peerReviewed
Rapid Quantification of Microalgae Growth with Hyperspectral Camera and Vegetation Indices
2021
Spectral cameras are traditionally used in remote sensing of microalgae, but increasingly also in laboratory-scale applications, to study and monitor algae biomass in cultures. Practical and cost-efficient protocols for collecting and analyzing hyperspectral data are currently needed. The purpose of this study was to test a commercial, easy-to-use hyperspectral camera to monitor the growth of different algae strains in liquid samples. Indices calculated from wavebands from transmission imaging were compared against algae abundance and wet biomass obtained from an electronic cell counter, chlorophyll a concentration, and chlorophyll fluorescence. A ratio of selected wavebands containing near…
Analysis and Performance Evaluation of the IEEE 802.16 ARQ Mechanism
2008
The IEEE 802.16 standard defines the ARQ mechanismas a part of the MAC layer. The functioning of the ARQmechanism depends on a number of parameters. The IEEE802.16 specification defines them but it does not provide concrete values and solutions. This paper studies the key features and parameters of the 802.16 ARQ mechanism. In particular, we consider a choice for the ARQ feedback type, an algorithm to build block sequences, the ARQ feedback intensity, a scheduling of the ARQ feedbacks and retransmissions, the ARQ block rearrangement, ARQ transmission window and the ARQ block size. We ran simulation scenarios to study these parameters and how they impact the performance of application protoc…
Interleukin 10 restores lipopolysaccharide-induced alterations in synaptic plasticity probed by repetitive magnetic stimulation
2020
Systemic inflammation is associated with alterations in complex brain functions such as learning and memory. However, diagnostic approaches to functionally assess and quantify inflammation-associated alterations in synaptic plasticity are not well-established. In previous work, we demonstrated that bacterial lipopolysaccharide (LPS)-induced systemic inflammation alters the ability of hippocampal neurons to express synaptic plasticity, i.e., the long-term potentiation (LTP) of excitatory neurotransmission. Here, we tested whether synaptic plasticity induced by repetitive magnetic stimulation (rMS), a non-invasive brain stimulation technique used in clinical practice, is affected by LPS-induc…
Molecular epidemiology of HIV-1 subtype B in the Basque Country (Spain)
2012
The goal of this work was to study the HIV-1 subtype B epidemic in the Basque Country (Spain). For this, we used HIV samples submitted for genotypic testing of anti-retroviral resistance mutations from 2005 until 2008. Consequently, 2115 HIV-1 sequences comprising protease and retrotranscriptase (PR/RT) coding regions were analyzed. HIV transmission groups were identified by phylogenetic analysis. The 10 largest such groups were subsequently subjected to Bayesian phylogenetic and coalescent reconstructions, using a relaxed molecular clock model. The results obtained show that these groups have been long-standing: most of them were originated in the late 70s or early 80s, and none after the …
Textos mèdics, morals i culinaris en un còdex valencià excepcional. Anàlisi del ms. 216 de la Biblioteca Històrica de la Universitat de València
2015
[cat] Estudi i proposta de reconstrucció del ms. 216 de la Biblioteca Històrica de la Universitat de València. Es tracta d'un còdex de la primera meitat del s. XV, actualment restaurat, que ha patit importants pèrdues de folis, mentre que altres han estat relligats en ordre incorrecte. El volum conté obres mèdiques i doctrinals, com ara traduccions catalanes del Thesarus pauperum de Pere Hispà, del Macer floridus d'Odó de Meung o del llibre II dels Disticha Catonis, i també obres escrites originalment en català, com el Llibre de Sent Soví i els Mil proverbis de Ramon Llull. El mal estat del volum ha dificultat la constatació d'alguns aspectes relatius a la seva constitució, que apunten vers…
De Balneator del Sendebar a Senescalus de los Siete sabios: del “exemplo” al relato de acción
2015
Resumen: Estudio de la difusion del cuento Balneator/Senescalus en el ciclo del Sendebar –tanto la rama transmision oriental, como la occidental–, para examinar las recreaciones de que ha sido objeto este relato en un continuo proceso de narrativizacion que convierte el «exemplo» del Sendebar, en relato de ccion en el Libro de los siete sabios de Roma y que responde a la necesidad de reactualizar la obra a lo largo de la Edad Media y de adaptarla a distintos modelos genericos, cauces de difusion variados y nuevos contextos y gustos literarios de recepcion. Palabras clave: Sendebar. Libro de los siete sabios de Roma. Balneator. Senescalu s . Transmision. Recepcion. Abstract: A study tha…
La transmissió lingüística intergeneracional del català al País Valencià: una perspectiva territorial
2012
Aquest article fa una elaboració de les dades de l’Enquesta sobre la situació social del valencià. 2004 referides a la transmissió intergeneracional del català. Primerament aquestes dades se situen en el context de tot el domini lingüístic (els Països Catalans) i després són analitzades, des d’una perspectiva territorial, al País Valencià. La recerca ens fa adonar-nos que, sociolingüísticament, hi podem distingir dues comunitats de parla diferents d’acord amb la vitalitat que mostra el català en cadascuna. En la zona formada per les regions d’Alcoi/Gandia i València (sense la ciutat de València) i la part nord de la regió de Castelló el català obté guanys en el pas de pares a fills. L’altra…