Search results for "Gold"
showing 10 items of 1320 documents
Experimental Confirmation of a Topological Isomer of the Ubiquitous Au25(SR)18 Cluster in the Gas Phase
2021
High-resolution electrospray ionization ion mobility mass spectrometry has revealed a gas-phase isomer of the ubiquitous, extremely well-studied Au25(SR)18 cluster both in anionic and cationic form. The relative abundance of the isomeric structures can be controlled by in-source activation. The measured collision cross section of the new isomer agrees extremely well with a recent theoretical prediction (Matus, M. F.; et al. Chem. Commun. 2020, 56, 8087) corresponding to a Au25(SR)18– isomer that is energetically close and topologically connected to the known ground-state structure via a simple rotation of the gold core without breaking any Au–S bonds. The results imply that the structural d…
Jubileusze małżeńskie świadectwem znaczenia przysięgi małżeńskiej
2017
In recent times thorough changes concerning the treatment of the wedding vows take place. One of the ways to create a positive approach to marriage seems to be a solemn observation of marriage jubilees .The paper deals with the historical process of the development of the forms of observance concerning wedding anniversaries. However the main emphasis is put on the rites of wedding anniversary in post conciliar liturgical books. The reader may also become aware of the idea and history of pilgrimages organized on the occasion of the silver and golden marriage jubilees, considering also a strong and clear testimony to the importance of the wedding vows.
Avoimen julkaisemisen kultainen reitti – mitä se maksaa?
2015
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
Hahmojen välisiä suhteita : interfiguraalisuus Donna Tarttin romaanissa The Secret History
2017
Tutkielma käsittelee interfiguraalisuutta – intertekstuaalisuuden alalajia, joka viittaa eri teksteissä esiintyvien henkilöhahmojen välisiin suhteisiin – Donna Tarttin romaanissa The Secret History. Tarttin romaanin päähenkilöitä tarkastellaan suhteessa neljän muun romaanin henkilöhahmoihin (F. Scott Fitzgeraldin The Great Gatsby, William Goldingin Lord of the Flies, Evelyn Waugh’n Brideshead Revisited sekä Oscar Wilden The Picture of Dorian Gray). Tutkielmassa eri teksteissä esiintyvien henkilöhahmojen välisiä interfiguraalisia kytköksiä peilataan suhteessa The Secret Historyn kertojan luotettavuuteen ja romaanin keskeisiin teemoihin. Tutkimusongelmana on, millaista potentiaalia interfigur…
Production and extraction of astaxanthin from Phaffia rhodozyma and its biological effect on alcohol-induced renal hypoxia in Carassius auratus
2015
The effect of astaxanthin (3,3â²-dihydroxy-s-carotene-4,4â²-dione) on alcohol-induced morphological changes in Carassius auratus, as an experimental model, was determined. The yeast Phaffia rhodozyma was used as a source of astaxanthin. The animals were divided into three groups for 30 days: one group was treated with ethanol at a dose of 1.5% mixed in water, the second one with EtOH 1.5% and food enriched with astaxanthin from P. rhodozyma, and the third was a control group. After a sufficient experimental period, the samples were processed using light microscopy and evaluated by histomorphological and histochemical staining, and the data were supported by immunohistochemical analysis, u…
Dynamic Stabilization of the Ligand-Metal Interface in Atomically Precise Gold Nanoclusters Au68 and Au144 Protected by meta-Mercaptobenzoic Acid
2017
Ligand-stabilized, atomically precise gold nanoclusters with a metal core of a uniform size of just 1-3 nm constitute an interesting class of nanomaterials with versatile possibilities for applications due to their size-dependent properties and modifiable ligand layers. The key to extending the usability of the clusters in applications is to understand the chemical bonding in the ligand layer as a function of cluster size and ligand structure. Previously, it has been shown that monodispersed gold nanoclusters, stabilized by meta-mercaptobenzoic acid (m-MBA or 3-MBA) ligands and with sizes of 68-144 gold atoms, show ambient stability. Here we show that a combination of nuclear magnetic reson…
Mākslas pasaules alūzijas Donnas Tartas romānā “The Goldfinch”
2018
Donnas Tartas romāns „The Goldfinch” kopš tā publicēšanas radījis sajūsmas vilni literatūras kritiķos un lasītājos visā pasaulē, piedzīvojot tulkojumu trīsdesmit valodās. Tomēr, izvērtējot iespējamo tulkojumu latviešu valodā, romānā attēlotā mākslas pasaule un alūzijas uz to varētu radīt ievērojamus sarežģījumus romāna tulkotājam. Tādēļ šajā darbā tiek pētītas īpašvārdu alūzijas uz mākslas pasauli, padziļināti apskatot tieši mākslas un literatūras alūzijas, un tiek izdarīti secinājumi par to iespējamo atveidi tulkojumā latviešu valodā, balstoties uz tulkošanas teorijā piedāvātajām stratēģijām un domāšanas modeļiem, ko piedāvā tādi autori kā Ritva Lepihalme, Ričards Tomass, kā arī Stīvens Ha…
Arte da Linguagem na Era da Panofonia
2018
This article calls attention to the hybrid genre of voice-based performances and its blending of the supposed binaries of human and machinic speech. Using the concept of panophonia, the author refers to the animatronic sculptures of speaking figures created by Ken Feingold and to Mark Böhlen’s talking robots. Through their comparative analysis, the author explores different poetic metalanguages both artists create to deconstruct communicative structures that demarcate post-human era.
Structural characterization of site-modified nanocapsid with monodispersed gold clusters
2017
AbstractHepatitis E Virus-like particles self-assemble in to noninfectious nanocapsids that are resistant to proteolytic/acidic mucosal delivery conditions. Previously, the nanocapsid was engineered to specifically bind and enter breast cancer cells, where successful tumor targeting was demonstrated in animal models. In the present study, the nanocapsid surface was modified with a solvent-exposed cysteine to conjugate monolayer protected gold nanoclusters (AuNC). Unlike commercially available gold nanoparticles, AuNCs monodisperse in water and are composed of a discrete number of gold atoms, forming a crystalline gold core. Au102pMBA44 (Au102) was an ideal conjugate given its small 2.5 nm s…