Search results for "GOLD"
showing 10 items of 1320 documents
Characterisation of single semiconductor nanowires by non-destructive spectroscopies
2015
Los nanohilos semiconductores (NWs, de su nombre inglés, nanowires) tienen una amplia gama de aplicaciones en el campo de la optoelectrónica (emisores de luz y diodos láser), nano-electrónica (circuitos lógicos y transistores de efecto de campo), y detección y producción de energía (células solares). En términos generales, los NWs pueden ser descritos como nanoestructuras de forma alargada con diámetros que van típicamente de decenas a cientos de nanómetros, y con longitudes que oscilan desde pocas hasta las decenas de micras. Dicha morfología ofrece dos ventajas principales en comparación con las capas: su alta relación superficie-volumen y su mayor calidad cristalina, ambas beneficiosas p…
Animalità, umanità, cultura, vita. A margine della discussione tra antropologi socioculturali.
2017
L'articolo ricostruisce alcuni momenti del dibattito sui rapporti tra umanità e animalità, evidenziando, sulla scorta di Ingold, come l'umanità sia stata pensata sia in quanto appartenenza a una specie biologica, sia in quanto condizione distintiva rispetto all'animalità. La necessità di dovere superare le antinomie che derivano dall'attribuzione di questo doppio statuto all'essere umano passa per un ripensamento del concetto di cultura
Saturation and forward jets in proton-lead collisions at the LHC
2019
We investigate the forward-jet energy spectrum within the Color Glass Condensate framework at 5 TeV center-of-mass energy. In particular, we focus on the kinematic range covered by the CMS-CASTOR calorimeter. We show that our saturation-model calculations are compatible with the CASTOR measurements and that to optimally reproduce the data, effects of multi-parton interactions need to be included. We predict a significant nuclear suppression - reaching down to 50% at the lowest considered jet energies $E_{\rm jet} \sim 500 \, {\rm GeV}$.
CCDC 1519226: Experimental Crystal Structure Determination
2017
Related Article: Sabrina Antonello, Tiziano Dainese, Fangfang Pan, Kari Rissanen, Flavio Maran|2017|J.Am.Chem.Soc.|139|4168|doi:10.1021/jacs.7b00568
Copper Induces a Core Plasmon in Intermetallic Au(144,145)–xCux(SR)60 Nanoclusters
2015
The electronic structure and optical absorption spectra of intermetallic thiol-stabilized gold-copper clusters, having 144-145 metal atoms and 60 thiols, were studied by ab initio computations. The widely known icosahedral-based cluster model from the work of Lopez-Acevedo et al. (2009) was used, and clusters doped with one to 30 copper atoms were considered. When doped inside the metal core, copper induces dramatic changes in the optical spectrum as compared to the previously studied all-gold Au144(SR)60. An intense broad absorption peak develops in the range 535-587 nm depending on the amount of doping and doping sites. This result agrees very well with recent experiments by the Dass grou…
Synergistic photo-release of drugs by non-linear excitation
2014
ABSTRACTNanomaterials engineered in novel multi-modular systems in which every component works in a synergistic way with others could potentially lead to a completely new type of tools for nanomedicine. The development of nanostructures able to release drugs directly within the target after a stimulus can drastically improve the therapeutics efficiency by reducing side effects. Gold nanoparticles offer one of the most suitable platforms for the development of modular nano-devices. On the one hand, their surface properties enable effective coating by peptides containing at least one cysteine, thus yielding stable and non-cytotoxic systems. On the other, their intriguing photophysics, charact…
Insight into mechanisms of creatinine optical sensing using fluorescein-gold complex
2022
Abstract Creatinine level in biological fluids is a clinically relevant parameter to monitor vital functions and it is well assessed that measuring creatinine levels in the human body can be of great utility to evaluate renal, muscular, or thyroid dysfunctions. The accurate detection of creatinine levels may have a critical role in providing information on health status and represents a tool for the early diagnosis of severe pathologies. Among different methods for creatinine detection that have been introduced and that are evolving with increasing speed, fluorescence-based and colorimetric sensors represent one of the best alternatives, thanks to their affordability, sensitivity and easy r…
Il calice di Giovanni di ser Iacobo ed altre suppellettili toscane del Trecento in Sicilia: novità su artisti e committenti
2012
La preziosa suppellettile liturgica conservata nel tesoro della Cattedrale di Messina è già nota da tempo agli studiosi perché firmata dall'orafo fiorentino Giovanni di ser Iacobo attivo alla corte reale angioina di Napoli. Il saggio, grazie alla corretta lettura della seconda iscrizione apposta sull'opera, individua la committente, la francescana suor Stefania Rufolo, la probabile destinazione originaria per un convento dell'area amalfitana e le ragioni per cui è successivamente giunta a Messina. Con l'occasione, si fa il punto anche su altre opere toscane coeve con smalti traslucidi The precious liturgical ornament preserved in the treasury of Messina Cathedral has long been known to scho…
Patrick Scott's gold paintings, an art of reconciliation
2016
International audience
Tarinan ja henkilöhahmon muodostuminen Golden Compass -PC-pelissä
2011
Pro Gradu -työssäni tutkin tarinan ja henkilöhahmon muodostumista PC -pelissä, erityisesti sitä, miten tarina ja henkilöhahmo siirtyvät toisesta julkaisumuodosta, romaanistaja elokuvasta, pelin muotoon. Käsittelen myös tarinan eroja representaatiossa ja simulaatiossa, tässä tapauksessa pelissä. Tutkimuskysymyksiäni olivat:1) Mitä eroja representaatiossa ja simulaatiossa on ker- ronnallisella tasolla, 2) mikä näiden erojen merkitys on henkilöhahmon ja tarinan rakentumiseen ja 3) miten henkilöhahmon rakentuminen eroaa romaanissa ja pelissä? Materiaalinani käytin Golden Compass -PC-peliä. Peli perustuu Philip Pullmanin Kultainen kompassi -nimiseen romaaniin, josta tehty elokuva on nimeltään Ku…