Search results for " Silver"
showing 10 items of 71 documents
Leaf-Level Spectral Fluorescence Measurements : Comparing Methodologies for Broadleaves and Needles
2019
Successful measurements of chlorophyll fluorescence (ChlF) spectral properties (typically in the wavelength range of 650–850 nm) across plant species, environmental conditions, and stress levels are a first step towards establishing a quantitative link between solar-induced chlorophyll fluorescence (SIF), which can only be measured at discrete ChlF spectral bands, and photosynthetic functionality. Despite its importance and significance, the various methodologies for the estimation of leaf-level ChlF spectral properties have not yet been compared, especially when applied to leaves with complex morphology, such as needles. Here we present, to the best of our knowledge, a first comparison of …
El arte de la platería en la Concatedral de San Nicolás de Alicante
2020
The Co-cathedral of San Nicolás de Alicante still preserves an important treasure of pieces of silverware, ranging from the 17th to the 20th centuries, although the greatest development was known during the 18th century, with sumptuous commissions to the most prominent silversmiths both locally as at regional and national level. In this way, it can be said that the Alicante trousseau is a good example of a temple that, once built, focuses its efforts on the collection of silverware objects that enhance the cult and its ceremonies.
Coffee silverskin extract protects against accelerated aging caused by oxidative agents
2016
Nowadays, coffee beans are almost exclusively used for the preparation of the beverage. The sustainability of coffee production can be achieved introducing new applications for the valorization of coffee by-products. Coffee silverskin is the by-product generated during roasting, and because of its powerful antioxidant capacity, coffee silverskin aqueous extract (CSE) may be used for other applications, such as antiaging cosmetics and dermaceutics. This study aims to contribute to the coffee sector’s sustainability through the application of CSE to preserve skin health. Preclinical data regarding the antiaging properties of CSE employing human keratinocytes and Caenorhabditis elegans are col…
Anticancer activity of biogenerated silver nanoparticles: an integrated proteomic investigation
2018
Silver nanoparticles (AgNPs), embedded into a specific polysaccharide (EPS), were biogenerated by Klebsiella oxytoca DSM 29614 under aerobic (AgNPs-EPSaer) and anaerobic conditions (AgNPs-EPSanaer). Both AgNPs-EPS matrices were tested by MTT assay for cytotoxic activity against human breast (SKBR3 and 8701-BC) and colon (HT-29, HCT 116 and Caco-2) cancer cell lines, revealing AgNPs-EPSaer as the most active, in terms of IC50, with a more pronounced efficacy against breast cancer cell lines. Therefore, colony forming capability, morphological changes, generation of reactive oxygen species (ROS), induction of apoptosis and autophagy, inhibition of migratory and invasive capabilities and prote…
Polysaccharide-based silver nanoparticles synthesized by Klebsiella oxytoca DSM 29614 cause DNA fragmentation in E-coli cells
2016
Silver nanoparticles (AgNPs), embedded into a specific exopolysaccharide (EPS), were produced by Klebsiella oxytoca DSM 29614 by adding AgNO3 to the cultures during exponential growth phase. In particular, under aerobic or anaerobic conditions, two types of silver nanoparticles, named AgNPs-EPS(aer) and the AgNPs-EPS(anaer), were produced respectively. The effects on bacterial cells was demonstrated by using Escherichia coli K12 and Kocuria rhizophila ATCC 9341 (ex Micrococcus luteus) as Gram-negative and Gram-positive tester strains, respectively. The best antimicrobial activity was observed for AgNPs-EPS(aer), in terms of minimum inhibitory concentrations and minimum bactericidal concentr…
Ad laudem Divini nominis et honorem gloriosissimae Dei Genetricis et semper Virginis Mariae. L’abbazia di Santa Maria di Altofonte
2019
Inediti documenti fanno in parte riemergere l’antico splendore dell’abbazia di Santa Maria di Altofonte, fondata da Federico III e retta dal XV secolo da abati commendatari appartenenti a nobili famiglie, come Ascanio Colonna, Scipione Borghese e Francesco Maria Medici. Dell’esiguo patrimonio artistico rimasto fa parte la coppia di reliquiari di argentiere messinese del 1727 ascritta alla committenza dell’abate Bartolotta. New documents partly re-emerge the ancient splendour of the abbey of Santa Maria di Altofonte, founded by Frederick III and ruled since the 15th century by commendatory abbots belonging to noble families, such as Ascanio Colonna, Scipione Borghese and Francesco Maria Medi…
A Difficult Case of Necrotizing Fasciitis Caused By Acinetobacter baumannii
2010
This study reports the case of a 55-year-old woman with diabetes with a necrotizing fasciitis of the right lower limb and the perineum, first admitted at the emergency department for septic shock with cardiac arrest, and later transferred to the department of surgery. Microbiological and histopathological examination confirmed the diagnosis of necrotizing fasciitis caused by Acinetobacter baumanii. A broad-spectrum antibiotic therapy was administered and later readjusted according to the results of microbiological culture. Intensive hemodynamic support was required. Wounds were dressed daily with a 3 percent boric acid solution and a silver sulfadiazine-impregnated dressing. An extensive s…
Andrea e gli argentieri Memingher in Sicilia
2018
Andrea Memingher è una tra le più enigmatiche figure di argentieri attivi a Palermo nella seconda metà del XVII secolo. Si può ritenere che la famiglia avesse origini nordiche e che, dopo un passaggio a Napoli, si stabilisse definitivamente a Palermo, inserendosi nella maestranza degli orafi e argentieri della città, probabilmente grazie ad un matrimonio con una figlia o una sorella o una vedova di un membro palermitano della maestranza. La presenza di Paolo Memingher nel capoluogo siciliano è attestata già nel 1660, due anni prima della data di inizio della sua attività, protrattasi fino al 1678. Il più importante esponente della famiglia fu Andrea, figlio di Paolo, il quale dovette la sua…
Argenti e argentieri per il monastero del SS. Salvatore di Corleone
2015
Attraverso lo studio delle informazioni inedite annotate nei volumi depositati nel Fondo delle Corporazioni Religiose Soppresse dell'Archivio di Stato di Palermo, è possibile ricostruire la collezione di argenteria del monastero del Santo Salvatore di Corleone, oggi purtroppo in gran parte perduta, riportando alla luce anche le figure degli artisti che hanno realizzato le opere. Through the study of the unpublished information noted in the volumes deposited in the Fund of the Suppressed Religious Corporations of the State Archives of Palermo, it is possible to reconstruct the collection of silverware of the monastery of the Holy Savior of Corleone, now unfortunately largely lost, bringing t…
La mazza d’argento dell’Universitas di Prizzi
2009
La mazza d'argento di Prizzi, cittadina dei monti Sicani, realizzata tra il 1723 e il 1724, viene riferita all'argentiere palermitano Placido Carini. L'opera, messa a confronto con altri simili manufatti coevi, è stata verosimilmente commissionata da Francesco Bonanno, barone di Prizzi The silver bat of Prizzi, a town in the Sicilian mountains, made between 1723 and 1724, is referred to the silversmith Placido Carini from Palermo. The work, compared with other similar contemporary artefacts, was probably commissioned by Francesco Bonanno, Baron of Prizzi.