Search results for "Enna"
showing 10 items of 748 documents
Gennadios Scholarios and the Church of the Holy Apostles
2020
The article tests the established view that Gennadios Scholarios, the first patriarch of Constantinople after the 1453 Conquest, used the church of the Holy Apostles in Constantinople as the seat of the Patriarchate for a few months in 1454 before moving to the building complex of the Pammakaristos monastery. After pointing out that all the sources that narrate the story of the installation of the Patriarchate in the famous Byzantine church date from the 16th century or later, the author examines sources contemporary with the events, including texts written by Scholarios himself. The aim of the article is to show that Scholarios officiated occasionally in the Holy Apostles and managed to sa…
Pleistocene age paleo-groundwater inferred from water-stable isotope values in the central part of the Baltic Artesian Basin.
2016
A new data set of δ(2)H and δ(18)O in the groundwater from the central part of the Baltic Artesian Basin is presented. The hydrogeological section is subdivided into stagnation, slow exchange and active exchange zones. Na-Ca-Cl brine found at the deepest part - the stagnation zone - is characterized by δ(18)O values above -5 ‰ and δ(2)H values approaching -40 ‰ with respect to Vienna Standard Mean Ocean Water. The slow exchange zone where waters of mostly intermediate salinity reside is characterized by δ(18)O values around -11.7 ‰ and δ(2)H values around -85.3 ‰. Mean δ(18)O and δ(2)H values of the fresh groundwater in the active water exchange zone are -11.1 and -79.9 ‰, respectively. Cha…
Coaxial Slot Antenna Design for Microwave Hyperthermia using Finite- Difference Time-Domain and Finite Element Method
2011
Hyperthermia also called thermal therapy or thermotherapy is a type of cancer treatment in which body tissue is exposed to high temperatures. Research has shown that high temperatures can damage and kill cancer cells, usually with minimal injury to normal tissues. Otherwise, ablation or high temperature hyperthermia, including lasers and the use of radiofrequency, microwaves, and high-intensity focused ultrasound, are gaining attention as an alternative to standard sur- gical therapies. The electromagnetic microwave irradiation applied to the tumor tissue causes water molecules to vibrate and rotate, resulting in tissue heating and subsequently cell death via thermal-induced protein denatur…
Atomikerroskasvatuksen ymmärrys molekyylitasolla
2014
Tutkielmassa käydään lyhyesti läpi atomikerroskasvatuksen historia, mitä se on ja sivutaan myös sen käyttökohteita. Atomikerroskasvatus on teollisessa mittakaavassa merkittävä sovellus ja sen käyttökohteiden määrä kasvaa entisestään. Pääosin keskitytään kahden yleisimmin käytetyn yhdisteen, alumiinioksidin Al2O3 ja hafniumoksidin HfO2, kasvatukseen, niiden reaktiomekanismeihin ja siihen kuinka reaktiomekanismit on saatu selville. Kronologinen läpileikkaus alkaen ensimmäisistä tehdyistä reaktioista aina viimeisimpiin ominaisuuksien selvittämistä koskeviin ja atomitason reaktioita kuvaaviin tutkimustuloksiin antaa yleiskuvan siitä kuinka monipuolisesta teknologiasta on kysymys. Tutkielmassa k…
An assessment of the differences between spatial resolution and grid size for the SMAP enhanced soil moisture product over homogeneous sites
2018
Abstract Satellite-based passive microwave remote sensing typically involves a scanning antenna that makes measurements at irregularly spaced locations. These locations can change on a day to day basis. Soil moisture products derived from satellite-based passive microwave remote sensing are usually resampled to a fixed Earth grid that facilitates their use in applications. In many cases the grid size is finer than the actual spatial resolution of the observation, and often this difference is not well understood by the user. Here, this issue was examined for the Soil Moisture Active Passive (SMAP) enhanced version of the passive-based soil moisture product, which has a grid size of 9-km and …
Mononuclear lanthanide(III)-oxamate complexes as new photoluminescent field-induced single-molecule magnets: solid-state photophysical and magnetic p…
2020
Implementing additional optical (luminescent) properties into the well-known class of single-molecule magnets (SMMs) is considered as a promising route toward obtaining the next generation of optomagnetic materials for quantum information storage and computing. Herein, we report a joint optical and magneto-structural study for the two novel series of lanthanide(iii) complexes of general formula Bu4N[LnIII(HL)4(dmso)]·nH2O where H2L = N-(4-Xphenyl)oxamic acid with X = Cl and n = 2 [Ln = Eu (1_Cl), Gd (2_Cl), Dy (3_Cl), and Tb (4_Cl)] and X = F and n = 3 [Ln = Eu (1_F), Gd (2_F), Dy (3_F), and Tb (4_F)]. All these compounds are mononuclear species with each lanthanide(iii) cation in a low-sym…
Computational thermochemistry: extension of Benson group additivity approach to organoboron compounds and reliable predictions of their thermochemica…
2022
High-level computational data for standard gas phase enthalpies of formation, entropies, and heat capacities are reported for 116 compounds of boron. A comparison of the results with extant experimental and computational benchmark values reveals important trends and clear outliers. Recommendations are made to revise some of the key quantities, such as the enthalpies of formation of orthoboric acid, trimethylthioborate, and triphenylborane, the last of which is found to be considerably in error. The uncertainties associated with the experimental values are found to exceed those of high-level calculations by a clear margin, prompting the redetermination of Benson group additivity contribution…
Synthesis, Characterization and Single Crystal X-ray Diffraction Analysis of Fused Triazolo/Thiadiazole Clubbed with Indole Scaffold
2023
The present synthetic strategy involves the synthesis of indolyl-triazolo-thiadiazole heterocyclic ring systems 8–13 from the condensation of 4-amino-5-(1H-indol-2-yl)-3H-1,2,4-triazole-3-thione 1 with the aromatic carboxylic acid derivatives 2–7 in presence of POCl3 for 1 h. All compounds were obtained in very good yields and have been well-characterized using spectroscopic techniques. Exclusively, good quality crystals from the target organic hybrid 8-(1H-indol-2-yl)-5-(p-tolyl)-[1,2,4]triazolo [3,4-b][1,3,4]thiadiazole 9 were obtained and found suitable for X-ray single crystal diffraction measurement, which is used to confirm and analyze the molecular and supramolecular stru…
Feasibility, limitations and potentiality of UHF-RFID passive implants
2012
Implanted RFID may play an important role in the personal Healthcare of next future. Antenna embedded into prosthesis or into other implanted medical devices could permit to monitor physiological and pathological processes, providing a natural interconnection to remote services. The big technical challenge is to establish a stable RFID link with the interior of the human body in spite of the high electromagnetic losses of the tissues. By using parametric electromagnetic models and some early result, it is here investigated the potentiality and limitation of the UHF implants with special attention to the body district, the overall mass, and the size of the antennas.
Manifesta 12, Palermo
2018
Il contributo per Flash Art è un focus sulla dodicesima edizione di Manifesta, Biennale nomade d'arte contemporanea che nel 2018 ha scelto Palermo come propria sede. Oltre all'approfondimento sul tema, sugli eventi collaterali e sulle sedi, il contributo propone un'intervista inedita al curatore Ippolito Pestellini Laparelli sulle potenzialità di questa nuova edizione della Biennale.