Search results for "amor"
showing 10 items of 1531 documents
Subjektius Marie Darrieussecqin romaanissa Truismes
2003
Amorphous Polyphosphate and Ca‐Carbonate Nanoparticles Improve the Self‐Healing Properties of both Technical and Medical Cements
2020
Cement is used both as a construction material and for medical applications. Previously, it has been shown that the physiological polymer inorganic polyphosphate (polyP) is morphogenetically active in regeneration of skin, bone, and cartilage. The present study investigates the question if this polymer is also a suitable additive to improve the self-healing capacity not only of construction cement but also of inorganic bone void fillers. For the application in the cement, two different polyP-based amorphous nanoparticles (NP) are prepared, amorphous Ca-polyP NP and amorphous Ca-carbonate (ACC) NP. The particles are integrated into poly(methyl methacrylate) in a concentration ratio of 1:10. …
Synthesis, electron microscopy and X-ray characterization of oxymagnesite, MgO·2MgCO3, formed from amorphous magnesium carbonate
2014
At present, the peculiar compound called oxymagnesite, MgO·2MgCO3, an intermediate formed during thermal decomposition of hydrated magnesium carbonates, has only been described a handful of times without a distinct description of its formation or morphology. In the current work we present the first scanning and transmission electron microscopy images of an oxymagnesite crystal together with its crystallographic data. Oxymagnesite was synthesized in a controlled manner via decomposition of amorphous magnesium carbonates (AMCs) subjected to varying relative humidity. We show that oxymagnesite is formed only when AMC is hydrated above a certain level, which we attribute to structural inequival…
De l’âne d’or d’Apulée au trois métamorphoses nietzschéennes : symbolisme animal et ascension spirituelle
2012
International audience
Amor leksiski semantiskais lauks: Horācija un Katulla tekstu salīdzinoša analīze
2015
Bakalaura darba “Amor leksiski semantiskais lauks: Horācija un Katulla tekstu salīdzinoša analīze” būtība ir noskaidrot abu romiešu dzejnieku mīlas leksiku, bet mērķis ir izpētīt, aprakstīt un salīdzinoši analizēt amor leksiski semantiskos laukus Horācija Odās un Katulla dzejoļos. Teorētiskajā daļā apskatīts nozīmes jēdziens, galvenie semantikas jautājumi un leksiski semantiskā lauka teorija. Praktiskā daļa balstīta uz kontekstuālo analīzi. No piemērotajiem 90 abu autoru dzejoļiem atrasti 283 amor leksiski semantiskā lauka elementi – tiešā un pārnestā nozīmē lietoti vārdi, to savienojumi. Amor leksika iekļaujas šādos motīvos: vara, uguns, daba, dievības un laika ritums. Secināts, ka Katulla…
Optical properties and photosensitivity of vacuum synthesized Ge-doped sol-gel amorphous SiO/sub 2/
2005
We report optical and electron paramagnetic resonance investigations of gamma ray irradiation effects in sol-gel Ge-doped amorphous SiO/sub 2/. The studied materials have Ge-doping levels up to 10/sup 4/ molar part per million and were densified by two routes differing for the atmosphere: O/sub 2/+N/sub 2/ or vacuum. The obtained results evidence that irradiation affects matrix sites inducing paramagnetic defects. Furthermore, the comparison between the two densification procedures shows that vacuum atmosphere induces higher radiation sensitivity.
Structural and optical characterization of ZnS ultrathin films prepared by low-temperature ALD from diethylzinc and 1.5-pentanedithiol after various …
2019
The structural and optical evolution of the ZnS thin films prepared by atomic layer deposition (ALD) from the diethylzinc (DEZ) and 1,5-pentanedithiol (PDT) as zinc and sulfur precursors was studied. A deposited ZnS layer (of about 60 nm) is amorphous, with a significant S excess. After annealing, the stoichiometry improved for annealing temperatures &ge
Evolution of microstructure and related optical properties of ZnO grown by atomic layer deposition.
2013
A study of transmittance and photoluminescence spectra on the growth of oxygen-rich ultra-thin ZnO films prepared by atomic layer deposition is reported. The structural transition from an amorphous to a polycrystalline state is observed upon increasing the thickness. The unusual behavior of the energy gap with thickness reflected by optical properties is attributed to the improvement of the crystalline structure resulting from a decreasing concentration of point defects at the growth of grains. The spectra of UV and visible photoluminescence emissions correspond to transitions near the band-edge and defect-related transitions. Additional emissions were observed from band-tail states near th…
Mezenhimālo stromas šūnu osteoģenēzes raksturojums uz amorfā kalcija fosfāta biomateriāla
2021
Mezenhimālās stromas šūnas ir plaši pētīts šūnu veids to potenciālo ārstniecisko efektu dēļ, no kuriem populārākie ir imūnmodulācija un audu reģenerācija. Bakalaura darbs bija fokusēts uz mezenhimālo stromas šūnu pielietojumu kaulaudu reģenerācijā un to biosaderību ar amorfo kalcija fosfātu, kas organismā atrodams kaula veidošanās sākumstadijā. Darba mērķis bija raksturot uz amorfā kalcija fosfāta biomateriāla audzētu mezenhimālo stromas šūnu osteoģenēzes potenciālu. Osteoģenēzes raksturošanai izmantoja osteokalcīna imūnfluorescento iezīmēšanu, savukārt, biosaderību analizēja ar kolorimetrisko CKK-8 analīzi. Rezultāti uzrādīja, ka mezenhimālas stromas šūnas ir spējīgas augt uz biomateriāla,…