Search results for "Core"
showing 10 items of 1999 documents
Ultrasmall Rigid Particles as Multimodal Probes for Medical Applications
2011
International audience; Ultrasmall but multifunctional: Rigid imaging particles that are smaller than 5 nm in size can be obtained in a top-down process starting from a core–shell structure (core=gadolinium oxide; shell=polysiloxane). They represent the first multifunctional silica-based particles that are sufficiently small to escape hepatic clearance and enable animal imaging by four complementary techniques.
PULMONARY EMBOLISM IN AN EMERGENCY CARE UNIT: EVALUATION OF PREDICTIVE FACTORS FROM CLINICAL HISTORY AND PHYSICAL EXAM
2016
Objective: An early diagnosis of pulmonary embolism (PE) improves outcome. Therefore, PE should be diagnosed in Emergency Care Units (ECU) at admission. Clinical algorithms support the clinician in this task, although performance is biased by differences in risk factors prevalent in different populations. The clinical conditions predictive of PE were evaluated in subjects from Southern Italy accessing ECU for dyspnea/chest pain.Methods: Retrospective clinical data were obtained by electronic retrieving from a hospital database. Data from 8177 patients (age 18-90 years, 54 with PE) were collected from years 2007-2013.Results: Previous history of PE, thrombosis and/or phlebitis, rheumatic dis…
Atom Transfer Radical Addition Catalyzed by Ruthenium–Arene Complexes Bearing a Hybrid Phosphine–Diene Ligand
2018
International audience; The synthesis and characterization of a series of arene ruthenium complexes bearing either (3,5-cycloheptadienyl)diphenylphosphine or (cycloheptyl)-diphenylphosphine are reported. Upon irradiation or heating, all these complexes lose their arene ligand but then exhibit a different behavior depending on the nature of the phosphine ligand. (Cycloheptadienyl)phosphine complexes 1 and 3 give a cationic dinuclear Ru complex 5 for which the two Ru atoms are bridged by three chlorido ligands and flanked by two tridendate (cycloheptadienyl)phosphines. (Cycloheptyl)-diphenylphosphine complexes 2 and 4 undergo arene exchange when toluene is used as solvent or degrade in dithlo…
Uztura atbilstība ziemeļvalstu diētai un adipozitātes saistība Latvijas vispārējā populācijā
2022
Mērķis Šajā darbā izklāstītā pētījuma vispārējais mērķis bija novērtēt Jaunās Ziemeļvalstu diētas (JZD) rezultāts, novērtējiet saistību starp JZD punktu (JZDP) skaitu un vispārējo, vēdera un viscerālo aptaukošanos, izmantojot Jaunās Ziemeļvalstu diētas rezultātu kā rādītāju diētas ievērošana un antropometriskie mērījumi, tostarp ĶMI, viduklis apkārtmērs (VA), sagitālais vēdera diametrs (SAD) un vidukļa un gurnu attiecība (VGA) kā aptaukošanās indikatoru. Materiāls un metodes Dizains Pētījums ir potenciālā kohorta. Galvenā ekspozīcija bija ekspozīcija un Jaunās Ziemeļvalstu diētas ievērošana tiek klasificēta kā zema, vidēja un augsta adhēzija. Galvenais iznākums bija vispārēja, vēdera un vis…
Demonstration and partial characterization of an intermediate HBcAG (Dane particle) population.
1981
Abstract Hepatitis-B core antigen (HBcAg) was released from Dane particles previously separated from anti-HBc by repeated pelleting through sucrose gradients separated into three HBcAg populations when analysed by cesium chloride density gradient centrifugation. Heavy HBcAg particles banded at a density of 1.355 gm/ml, intermediate HBcAg particles at a density of 1.33 gm/ml, and light mediate HBcAg particles at a density of 1.30 gm/ml. Like heavy HBcAg particles, intermediate HBcAg particles contained DNA polymerase activity, but the ratio of HBcAg to DNA polymerase activity was significantly different in both populations. Intermediate HBcAg particles could not be separated from heavy HBcAg…
New rotational levels in $^{186}$Re nucleus
2020
International audience; Excited levels of 186 Re have been studied using results of the single γ -ray spectra measurements following the thermal neutron capture reaction. Energies and intensities of more than 500 γ -transitions have been obtained with the high-resolution crystal diffraction spectrometer GAMS5 of ILL. Most of the obtained intense γ -transitions have been placed in the 186 Re level scheme. A number of new levels, as well as the depopulation for levels observed earlier in the 187 Re (p,d)186 Re reaction measurements have been proposed. Structure of 186 Re levels is interpreted in terms of two-quasiparticle plus rotor coupling model and compared with that of the neighbouring do…
A new ecdysteroid and other constituents from two Dioscorea species
2008
Phytochemical investigation of the rhizome of Dioscorea dumetorum has led to the isolation by several chromatographic steps on normal and reversed phase silica gel of a new ecdysteroid, (20R)-5β,11α,20-trihydroxyecdysone (1), and two known ecdysteroids, ajugasterone C (2) and herkesterone (3). Their structures were determined by spectroscopic methods including 1D- and 2D-NMR (COSY, TOCSY, HSQC and HMBC). This is the first report on the occurrence of phytoecdysteroids in the Dioscoreaceae family. These compounds were devoid of antifungal activity against three Candida species (Candida albicans, Candida glabrata and Candida tropicalis, MIC > 200 μg/ml).
Cores for parabolic operators with unbounded coefficients
2009
Abstract Let A = ∑ i , j = 1 N q i j ( s , x ) D i j + ∑ i = 1 N b i ( s , x ) D i be a family of elliptic differential operators with unbounded coefficients defined in R N + 1 . In [M. Kunze, L. Lorenzi, A. Lunardi, Nonautonomous Kolmogorov parabolic equations with unbounded coefficients, Trans. Amer. Math. Soc., in press], under suitable assumptions, it has been proved that the operator G : = A − D s generates a semigroup of positive contractions ( T p ( t ) ) in L p ( R N + 1 , ν ) for every 1 ⩽ p + ∞ , where ν is an infinitesimally invariant measure of ( T p ( t ) ) . Here, under some additional conditions on the growth of the coefficients of A , which cover also some growths with an ex…
Biological quality metrics: their variability and appropriate scale for assessing Streams
2006
The concept of spatial scale is at the research frontier in ecology, and although focus has been placed on trying to determine the role of spatial scale in structuring communities, there still is a further need to standardize which organism groups are to be used at which scale and under which circumstances in environmental assessment. This paper contributes to the understanding of the variability at different spatial scales (reach, stream, river basin) of metrics characterizing communities of different biological quality elements (macrophytes, fishes, macroinvertebrates and benthic diatoms) as defined by the Water Framework Directive. For this purpose, high-quality reaches from medium-sized…
Tīmekļa pakalpes uzlabošana, izmantojot .NET Core un konteineru tehnoloģijas
2020
Attīstoties tehnoloģijām, parādoties jauniem risinājumiem un mainoties prasībām, ir nepieciešams pielāgot un uzlabot jau esošo programmatūru. Viens no mūsdienās izmantojamiem risinājumiem ir konteinerizācija, kas padara vienkāršāku sistēmu mērogojamību un līdz ar to arī uzturēšanu. Lai pilnvērtīgāk izmantotu konteinerizācijas priekšrocības var pielietot .NET Core ietvaru, kurš nodrošina sistēmas neatkarību no izvēlētās platformas. Darba mērķis ir izpētīt tīmekļa pakalpes uzlabošanas iespējas, izmantojot .NET Core ietvaru un konteineru tehnoloģijas. Tā sasniegšanai tika izpētītas .NET Core ietvara iespējas un process, kā veikt pāreju no .NET Framework uz .NET Core, kā arī izpētīta pieejamā l…