34 research outputs found
Un anello ebraico in bronzo da Porto Torres (sec. IV-V e.v.), e l'epigrafe di Anabatia rinvenuta a Gerace (sec. XIV), con una nota su una lucerna funeraria ebraica da Licata (secc. IV-V e.v.)
No full textThe study presents a number of new archaeological discoveries of Jewish artifacts and proposes a new reading of an already known inscription. Perani, author of Part I, describes a recently discovered Jewish bronze ring from Porto Torres, Sardinia, dating to late antiquity (4th-5th centuries e.v.), relating to similar Jewish rings, discovered in Sicily and Sardinia in the past. Colafemmina, author of Part II, presents his reading of the inscription of Anabatyya found in 1990 in Gerace, province of Reggio Calabria. Finally, M.S. Rizzo and A. Toscano Raffa describe a recently discovered Jewish funerary lamp with menorah from late Roman period (4th-5th centuries), just found in Licata (Sicily)
Three immobilized enzymes acting in series in layer by layerassemblies: Exploiting the trehalase-glucose oxidase-horseradishperoxidase cascade reactions for the optical determination oftrehalose
No full textA new optical biosensor for trehalose determination has been realized immobilizing three glycoenzymeson a transparent support. Trehalase, glucose oxidase and horseradish peroxidase have been alternatedwith layers of Concanavalin A by a “layer-by-layer” (LbL) deposition. The driving force of this assembly isthe biospecific complexation between Concanavalin A and sugar residues in the glycoenzymes. As con-firmed by UV–vis spectroscopy, the LbL deposition allowed a high ordinate architecture with high loadingof enzymes. After the assembly, the functionality of immobilized enzymes was spectrophotometricallyproven, demonstrating also that they can act in series catalyzing cascade reactions.The prepared biosensor was used to optically detect trehalose, giving a LOD of 10 M and a linearresponse up to 4 mM, and it showed also good time stability. The trehalose content in a real sample(eyewash) was successfully determined by the biosensor
L'attività degli ebrei negli atti notarili del secolo XV a Bitetto e Palo
No full textJewish Activities in 15th-Century Notary Deeds from Bitetto and Palo
The paper integrates an as yet unpublished study of 156 summaries of notary deeds already edited by C. Colafemmina. The introduction investigates the Jews’ economic burden during the 15th century in the two cities of Bitetto and Palo del Colle (province of Bari) which, although very close, had a different political history that probably conditioned their relationship with the Jews of Apulia. The analysed documents are mortgage, sale and fabrics purchase deeds, real estate and rental of animals contracts, agreed upon by inhabitans of Bitetto e Palo and Jews of the neighbouring cities. The article includes summaries of deeds of the notaries Antonino de Iuliano from Bitetto (1453-1494) and Domenico de Cassano from Palo (1457-1497). Il lavoro integra, con la pubblicazione di 156 regesti, un precedente studio di C. Colafemmina. Nelle nuove sezioni, de Ceglia analizza il peso economico degli ebrei, durante il secolo XV, nelle città di Bitetto e Palo: che, per quanto affini sotto vari punti di vista, ebbero differenti vicende politiche, che probabilmente condizionarono anche il loro rapporto con gli ebrei presenti in varie località pugliesi. Gli atti notarili analizzati riguardano mutui, compravendite di tessuti e d'immobili, noleggio di animali.
Jewish Activities in 15th-Century Notary Deeds from Bitetto and Palo
The paper integrates an as yet unpublished study of 156 summaries of notary deeds already edited by C. Colafemmina. The introduction investigates the Jews’ economic burden during the 15th century in the two cities of Bitetto and Palo del Colle (province of Bari) which, although very close, had a different political history that probably conditioned their relationship with the Jews of Apulia. The analysed documents are mortgage, sale and fabrics purchase deeds, real estate and rental of animals contracts, agreed upon by inhabitans of Bitetto e Palo and Jews of the neighbouring cities. The article includes summaries of deeds of the notaries Antonino de Iuliano from Bitetto (1453-1494) and Domenico de Cassano from Palo (1457-1497). 
Le indagini archeologiche di Cesare Colafemmina: le catacombe di Venosa nel carteggio con la Soprintendenza (1972-1980)
No full textCesare Colafemmina's Archaeological Investigations: The Catacombs of Venosa and His Correspondence with the Superintendency for the Archaeological Heritage (1972-1980)
Cesare Colafemmina’s scientific production is marked by profound eclecticism, and in an interdisciplinary way, his research followed more than one direction: biblical exegesis, archaeology, history, art, literature and documents. Among his most important works there are those concerning the catacombs of Venosa, in Basilicata, to which he dedicated a ten year archaeological survey in the 70s and 80s. In his printed essays, Colafemmina often referred to survey campaigns, inspections and to excavation attempts, without, however, particularly dwelling upon these research stages, which are also very important for the correct reconstruction of the events regarding the catacombs and the history of their discovery. The article presents a study of the exchange of letters between Colafemmina and, in particular, the Soprintendenza per i Beni Archeologici della Basilicata, from which one can infer both the exact chronology of his research and discoveries and the atmosphere and circumstances in which they took place.In questo studio si presenta la corrispondenza intercorsa fra C. Colafemmina, il più importante studioso moderno delle catacombe di Venosa, e la Soprintendenza per i Beni Archeologici della Basilicata. Dalla documentazione emerge la cronologia esatta dei suoi studi sul sito e delle sue scoperte, nonché le circostanze entro cui ebbero luogo.
Cesare Colafemmina's Archaeological Investigations: The Catacombs of Venosa and His Correspondence with the Superintendency for the Archaeological Heritage (1972-1980)
Cesare Colafemmina’s scientific production is marked by profound eclecticism, and in an interdisciplinary way, his research followed more than one direction: biblical exegesis, archaeology, history, art, literature and documents. Among his most important works there are those concerning the catacombs of Venosa, in Basilicata, to which he dedicated a ten year archaeological survey in the 70s and 80s. In his printed essays, Colafemmina often referred to survey campaigns, inspections and to excavation attempts, without, however, particularly dwelling upon these research stages, which are also very important for the correct reconstruction of the events regarding the catacombs and the history of their discovery. The article presents a study of the exchange of letters between Colafemmina and, in particular, the Soprintendenza per i Beni Archeologici della Basilicata, from which one can infer both the exact chronology of his research and discoveries and the atmosphere and circumstances in which they took place
Oxidation-proof microemulsions: microstructure and reactivity in the presence of dioxiranes
No full textDioxiranes are used as reagents in a myriad of synthetically useful oxidations performed in aqueous medium. To extend such an approach also to substrates that are highly hydrophobic, we propose here the use of microemulsions based on the surfactant hexadecyltrimethylammonium hydrogen sulphate (CTAHS) because of its high stability against peroxide species. In this paper, we examine the dioxirane (isolated or generated in situ) reactivity in different CTAHS microemulsions. Yield and selectivity of the oxidation of -methylstyrene (2) by dimethyldioxirane (DDO, 1a) generate “in situ” and of laurolactam (3) by isolated methyl(trifluorometyl)dioxirane (TFDO, 1b) were studied. For each microemulsion, the aggregate size and the localization of the components were determined by a combination of NMR and light scattering techniques. The hydrodynamic radius of the micelles is close to the length of the surfactant and this suggests they are spherical in shape. When acetone (the precursor of 1a) is present in the formulation, it partitions itself between the aqueous bulk and the micellar palisade so that the dioxirane eventually formed is readily available to oxidize substrates secluded in the micelle. Apolar substrates, confined within the micelles, are protected from uncontrolled oxidations, leading to an astonishing high selectivity of oxidation of laurolactam (3) to 12-nitro-lauric acid (3a) by TFDO (1b). This opens the way to an easy and green procedure (performed in water under mild conditions) to synthetize omega-nitroacids
Presenza ebraica in Rutigliano e Conversano nei secoli XV e XVI
No full textThe Jews in Rutigliano and Conversano in the 15th and 16th Centuries
The present work deals with the publication of the registers of deeds written up in Rutigliano and Conversano (Puglia) during the 15th and 16th century by the notaries Antonello de Salatino from Rutigliano and Giacomo di sire Goffredo in Conversano. The transcription of the notarial deeds, done by the late Professor Cesare Colafemmina, is preceded by a short introduction by Diego de Ceglia about the Jewish presence in these two Apulian towns. The large number of the deeds shows how relevant the presence of Jews – most of whom were shepherds or cowherds – must have been within the community. The deeds also include the names of Jews engaged in moneylending at the time, and also in the buying and selling of necessaries and fabrics in Rutigliano, Conversano and other nearby towns. The 16th-century deeds from Rutigliano shed light on Jews’ economic conditions thanks to their references to the general regulations of the Kingdom of Naples concerning their taxation and exemptions.Il saggio presenta l'edizione dei regesti degli atti redatti nelle piazze di Rutigliano e Conversano nel XV e XVI secolo presso i notai Antonello de Salatino, operante a Rutigliano, e Giacomo de Sire Goffredo, il quale lavorò a Conversano nella metà del XV secolo. La regestazione degli atti notarili, già preparata da C. Colafemmina, è preceduta da una breve introduzione di D. de Ceglia, cui si deve la cura dei regesti del XVI secolo relativi alla presenza di ebrei nelle due città pugliesi, in età angioina e viceregnale. La varietà di documenti dimostra come gli ebrei fossero influenti all'interno della comunità, dove erano principalmente dediti all'agricoltura e alla zootecnia. Lo studio consente inoltre di conoscere i nomi di alcuni ebrei attivi come prestatori e commerciavano tessuti e beni di prima necessità non solo Rutigliano e Conversano, ma anche in altre città vicine, dove risultano rogati alcuni atti.
The Jews in Rutigliano and Conversano in the 15th and 16th Centuries
The present work deals with the publication of the registers of deeds written up in Rutigliano and Conversano (Puglia) during the 15th and 16th century by the notaries Antonello de Salatino from Rutigliano and Giacomo di sire Goffredo in Conversano. The transcription of the notarial deeds, done by the late Professor Cesare Colafemmina, is preceded by a short introduction by Diego de Ceglia about the Jewish presence in these two Apulian towns. The large number of the deeds shows how relevant the presence of Jews – most of whom were shepherds or cowherds – must have been within the community. The deeds also include the names of Jews engaged in moneylending at the time, and also in the buying and selling of necessaries and fabrics in Rutigliano, Conversano and other nearby towns. The 16th-century deeds from Rutigliano shed light on Jews’ economic conditions thanks to their references to the general regulations of the Kingdom of Naples concerning their taxation and exemptions
Removal of chromate from water by a new CTAB-silica gelatin composite
No full textA novel composite able to remove hexavalent chromium Cr(VI) from aqueous solutions was obtained by adding the silica precursor
tetraethoxysilane (TEOS) to the hexadecyltrimethylammonium bromide (CTAB) microemulsion-based gel. A physical characterization of the
new matrix revealed high stability of the silica gelatin composite in water at high temperatures and at neutral pH. Good efficiency in removing
chromate from neutral solutions was also demonstrated by the adsorption kinetics. In particular, the adsorption data of chromate obtained with
the CTAB–silica gelatin composite at 25 ◦C and pH 7.5 are described by the Freundlich isotherm model. The specific role of CTAB in the silica
gelatin composite was also evaluated by comparing the kinetics of the anionic AOT–silica gelatin composite to the CTAB one. The data collected
clearly showed that the positively charged surfactant was necessary to efficiently adsorb Cr(VI) from aqueous solutions. SEM and pulsed gradient
spin–echo NMR analysis of the composite demonstrated that the silicon is well assembled in the gelatin network, in which water molecules
maintain a high mobility. The diffusion coefficient of water in this system was shown to remain close to the value of pure water. Finally, X-ray
analyses of the elemental content in the CTAB–silica gelatin composite indicated no difference in terms of percentage of silica distributions in
different areas of the matrix and suggested that chromium adsorption could take place in internal areas
Oxidation-Proof Microemulsions: Microstructure and Reactivity in the Presence of Dioxiranes
No full textDioxiranes are used as reagents in a myriad of synthetically useful oxidations performed in aqueous medium. To extend such an approach also to substrates that are highly hydrophobic, we propose here the use of microemulsions based on the surfactant hexadecyltrimethylammonium hydrogen sulphate (CTAHS)
because of its high stability against peroxide species. In this paper, we examine the dioxirane (isolated or generated in situ) reactivity in different CTAHS microemulsions. Yield and selectivity of the oxidation
of b-methylstyrene by dimethyldioxirane (DDO) generate ‘‘in situ’’ and of laurolactam by isolated
methyl(trifluorometyl)dioxirane (TFDO) were studied. For each microemulsion, the aggregate size and the localization of the components were determined by a combination of NMR and light scattering techniques. The hydrodynamic radius of the micelles is close to the length of the surfactant and this suggests
they are spherical in shape. When acetone (the precursor of DDO) is present in the formulation, it partitions
itself between the aqueous bulk and the micellar palisade so that the dioxirane eventually formed is
readily available to oxidize substrates secluded in the micelle. Apolar substrates, confined within the micelles, are protected from uncontrolled oxidations, leading to an astonishing high selectivity of oxidation
of laurolactam to 12-nitro-lauric acid by TFDO. This opens the way to an easy procedure (performed in water under mild conditions) to synthetize omega-nitroacids
Emulsions: a time-saving evaluation of the droplets polydispersity and the dispersed phase self-diffusion coefficient
No full textThe NMR pulsed magnetic field-gradient spin-echo (PGSE) technique is used to study restricted diffusion in emulsion droplets. Experimental and theoretical difficulties are discussed. A limiting law for evaluating the self-diffusion coefficient directly from the data is derived. For the polydispersed system, the methods allow us also to obtain information about the droplet size distribution. The reliability of the polynomial representation of simulated and experimental data is investigated, with emphasis on the application to emulsion. Experimental results are given for the water-in-oil system formed by water-swollen Sephadex G-50 and cyclohexane at 25 degrees C. The agreement between the self-diffusion calculated and that measured in water-Sephadex is quite good
Cataionic systems from conversion of nucleotides into nucleo-lipids
No full textThis article focuses on reactions performed in nanostructured environments where the pair of complementary
nucleotides, 5¢-AMP and 5¢-UMP, are converted into their amphiphilic derivatives. The synthesis is carried out by
using the hydrophobic reactant dodecyl epoxide (DE) dispersed in a micellar solution based on the cationic surfactant
cetyltrimethylammoniumbromide (CTAB). Novel nucleo-lipids monomers and CTAB molecules give rise to the
spontaneous self-assembly of catanionic supramolecular structures in water, showing typical Maltese crosses in optical
microscopy. In the final colloidal suspensions, mono- and dichained derivatives have been identified in the system
incubated with 5¢-UMP through LC-QqTOF-MS analysis, whereas only mono-alkylated adducts are found in the
analogue reaction with 5¢-AMP. A new di-alkylated 5¢-UMP adduct is obtained from the 1:1 mixture of both
complementary nucleotides, in addition to the nucleo-lipids found in separate systems. Time-resolvedDLSmeasurements
reveal very different kinetic processes for aggregates’ formation when 5¢-UMP, 5¢-AMP, or their equimolar combination
are used in the reaction mixture. This system as a whole represents a potential experimental model where the effect
of both intermolecular interactions and self-association processes can be investigated by tuning the type of nucleobases
in the reaction mixtures
