AC magnetic heating of superparamagnetic Fe and Co nanoparticles

AC magnetic heating of superparamagnetic Co and Fe nanoparticles for application in hyperthermia was measured to find a size of nanoparticles that would result in an optimal heating for given amplitude and frequency of ac externally applied magnetic field. To measure it, a custom-made power supply connected to a 20-turn insulated copper coil in the shape of a spiral solenoid cooled with water was used. A fiber-optic temperature sensor has been used to measure the temperature with an accuracy of 0.0001 K. The magnetic field with magnitude of 20.6 µT and a frequency of oscillation equal to 348 kHz was generated inside the coil to heat magnetic nanoparticles. The maximum specific power loss or the highest heating rate for Co magnetic nanoparticles was achieved for nanoparticles of 8.2 nm in diameter. The maximum heating rate for coated Fe was found for nanoparticles with diameter of 18.61 nm. © (2013) Trans Tech Publications, Switzerland.

Study of AC losses in medium-sized high temperature superconducting coils

The study of AC losses in superconducting pancake coils is of utmost importance for the development of superconducting devices. Due to different technical difficulties this study is usually performed considering one of two approaches: considering superconducting coils of few turns and studying AC losses in a large frequency range vs. superconducting coils with a large number of turns but measuring AC losses only in low frequencies. In this work, a study of AC losses in 128 turn superconducting coils is performed, considering frequencies ranging from 50 Hz till 1152 Hz and currents ranging from zero till the critical current of the coils. Moreover, the study of AC losses considering two different simultaneous harmonic components is also performed and results are compared to the behaviour presented by the coils when operating in a single frequency regime. Different electrical methods are used to verify the total amount of AC losses in the coil and a simple calorimetric method is presented, in order to measure AC losses in a multi-harmonic context. Different analytical and numerical methods are implemented and/or used, to design the superconducting coils and to compute the total amount of AC losses in the superconducting system and a comparison is performed to verify the advantages and drawbacks of each method.

Divi Bernardi Abbatis clarevallis doctoris divertissimi ac vere melliflui opera omnia : divine institutionis plenissima, artificibus typis in unu coacta codicem sermones varii argumenti in sacre scripture locos principios ; Homilie in cantica canticorum ; Epistole tum familiares tum doctrinales... ([Reprod.])

Collection : French books before 1601 ; 37.1

Nicolai Beraldi de vetere ac novitia jurisprudentia oratio : cum erudita ad antiquorum lectionem de studium exhortate ([Reprod.])

Collection : French books before 1601 ; 107.8

1.° Comoedia Marabei, Mendici : authoris nomen non comparet. — 2.° Comoedia Licocorduli ; sive, relictor cuculli, comoedia : authore anonymo. — 3.° Anonymi opusculum cujus titulus : Dialogus longè facetissimus de temporum ac scientiarum mutatione, disputationem praesertim Sophistici et Logodaedali complectens : est autem de abjiciendis praecipuè Sophistarum gerris ; similiter et de matrimonio Praeceptoribus minùs convenienti, ob uxoris gravitatem et pondus. — 4.° Institutiones rhetoricae in tabulas distributae : authore Philippo Boisotio Rollando.

Colbertinus

1.° Fratris Martini Poloni, de ordine Praedicatorum ac domini Papae Poenitentiarii, chronica de summis Pontificibus et Imperatoribus, à Christo ad annum 1277. — 2.° Capita nonnulla ad morum doctrinam pertinentia. — 3.° Vita et miracula sancti Benedicti. — Ad hujusce codicis calcem haec leguntur : Anno Domini 1272. Philippus, Rex Franciae, die Veneris ante passionem Domini venit apud Malleziacum invitatus à reverendo patre domino Radulpho, tunc temporis Abbate dicti loci, ibidemque manducavit et pernoctavit, in crastinoque recessit.

Baluzianus

vita beati Rigi, sive Henrici Bolzanensis : authore Petro, dicto de Baono, Episcopo Tarvisino ; praemittitur Joannis de Bononia, Scribae, ac civis Tarvisini, opuscuium de beato Henrico in templo cathedrali urbis Tarvisii pronuntiatum, et Frederico III. Imperatori nuncupatum.

Mazarinaeus

historia Fratris Nicolai de Saxo, Eremitae Undervaldensis, Helvetii, viri pietatis ac religionis laude clarissimi, olim ab Henrico Lupulo Bernate sincera fide, sed breviter conscripta, nunc verò ex optimis quibusque authoribus, sacrisque viri Dei monumentis insigniter aucta : per Joannem Joachimum Sciurum Bell' hemium, Rhenanum.

Tellerianus

1.° Petri Pauli Vergerii, Justinopolitani, liber de politia Venetorum, eorumque legibus ac moribus, urbis situ, naturaque regionis. — 2.° Ejusdem liber de situ veteris Romae. — 3.° Anonymi chronica Italica. — 4.° Historiae ecclesiasticae omnium temporum libri sex : authore anonymo. — 5.° Sexti Rufi, viri Consularis, historiae Romanae breviarium. — 6.° Benevenuti de Rambaldis, Imolensis, liber augustalis de vitis Caesarum.

Faurianus