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  • 1
    Electronic Resource
    Electronic Resource
    Physical Characterisation of Endodontic Instruments in NiTi Alloy (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 327-328 (Jan. 2000), p. 75-78 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.327-328.75.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Fluorine absorption in dental enamel assisted by UV irradiation (1988)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 10 (1988), S. 137-143 
    Details
    ISSN: 0392-6737
    Keywords: Bio-optics (effects of microwaves, light, laser and other electromagnetic waves)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Con questo lavoro viene presentato un nuovo metodo di fluoroprofilassi dentale basato su una reazione chimica indotta da irraggiamento UV dello smalto dentario. Gli ioni fluoro di un gel applicato topicamente sullo smalto vengono ritenuti dall'apatite dentaria al 70% ed all'80% del valore di massima deposizione per campioni irradiati con lampada o con luce laser, rispettivamente. La reazione nucleare19F(p,α)16O è stata adoperata per misurare le concentrazioni di fluoro nei primi 3 μm dello smalto dio denti sani prima e dopo l'applicazione del gel con e senza irraggiamento UV. Questo metodo di prevenzione dentale risolve il problema della tradizionale fluoroprofilassi che apporta fluoro allo smalto senza legarlo all'apatite.
    Abstract: Резюме Предлагается новый метод зубной фторовой профилактики, основанной на химической реакции, индуцированной ультрафиолетовым облучением зубной эмали. Ионы фтора могут удерживатжся из геля в зубном апатите при облучении лампой на 70% и при облучении лазером на 80% от максимальной нанесенной величины. Используется ядерная реакция19F(p,α)16O для измерения концентраций фтора в первых 3 мкм эмали здоровых зубов до и после нанесения гелия с и без ультрафиолетового облучения. Этот метод решает проблему традиционной фторовой профилактики, который позволяет вносить фтор в эмаль без повреждения апатита.
    Notes: Summary A new method of dental fluorine prophylaxis based on the chemical reaction induced by UV irradiation in dental enamel has been presented. Fluorine ions from a gel topic can be retained to the dental apatite in the lamp-irradiated samples at about 70% and in the laser-irradiated samples at about 80% of the maximum deposited value. The19F(p,α)16O nuclear reaction was used to measure the fluorine concentrations in the first 3 μm of the enamel of healthy teeth before and after the gel topic applications with and without UV irradiation. This method of dental prefenction resolves the problem of the traditional fluorine prophylaxis which brings fluorine in the enamel without binding the apatite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02450095
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  • 3
    Electronic Resource
    Electronic Resource
    Thin-film analysis by 100 keV proton beam (1986)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 7 (1986), S. 70-78 
    Details
    ISSN: 0392-6737
    Keywords: Ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Fasci di protoni a bassa energia (100 keV) sono stati adoperati per eseguire misure di spessori di film sottili, misurein situ di dosi impiantate, studio di processi di mescolamento di ioni e determinazioniin situ di fattori di sputtering di diversi materiali. Il lavoro si propone di mostrare le capacità del metodo e la possibilità di poter eseguire misurein situ. La calibrazione dei vari metodi di analisi, basati sulla fluorescenza X indotta dal fascio di protoni incidente, è stata eseguita comparandone i risultati con quelli ottenuti dalla tradizionale tecnica del Rutherford backscattering.
    Abstract: Резюме Пучки протонов с энергий 100 кэВ используются для измерения толщины, дозы имплантации, процесса смешивания ионов и выхода распыления в тонких пленках. Обсуждаются возможности метода. Методы градуировки, основанные на рентгеновском излучении, индуцированном протонами, детерминируются с помощью анализа обратного резерфордовского рассеяния.
    Notes: Summary 100 keV proton beams have been used for measuring thickness, implanted doses, ion-mixing process and sputtering yield in thin films. The method potentiality and the possibility to executein situ measurements are shown. Calibration methods, based on proton-induced X-ray emission, have been determined by using Rutherford backscattering analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02452396
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  • 4
    Electronic Resource
    Electronic Resource
    Depth distribution of fluorine in enamel teeth by19F(p, α0)16O reaction (1985)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 5 (1985), S. 164-174 
    Details
    ISSN: 0392-6737
    Keywords: Nucleon-induced reactions and scattering ; Biophysical instrumentation and techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Usando la reazione nucleare19F(p, α0)16O, con un fascio di protoni incidenti di 1350 keV, sono stati ottenuti i profili di fluoro nello smalto di denti umani sani e fluorotici. Lo studio della distribuzione di fluoro in profondità è stato condotto per confronto degli spettri rivelati dal dente e da campioni standard di CrF3 di riferimento. La concentrazione media di fluoro riscontrata nello smalto di incisivi sani è stata di 1.5 mg/g. Queste concentrazioni possono raggiungere 13 mg/g nello smalto di incisivi fluorotici. Le zone cariate mostrano una deficienza di fluoro, al di sotto del limite minimo di rivelazione della metodica (MDL=0.3 mg/g).
    Abstract: Резюме Используя ядерную реакцию19F(p, α0)16O при энергии падающего протонного пучка 1350 кэВ, измеряются распределения фтора по глубине в эмали зубов человека. Характеристики распределения фтора были получены с помощью сравнения энергетического спектра альфа-частиц из реакции в зубе со спектром для стандартной мишени CrF3. Средняя концентрация фтора составляет 1.5 мг/г в эмали здоровых зубов, тогда как концентрация в кариозных зонах уменьшается до 0.3 мг/г. Эти концентрации могут достигать значений 13 мг/г в эмали фтоти-рованных зубов.
    Notes: Summary Fluorine depth profiles have been measured into enamel of human teeth by using the nuclear reaction19F(p, α0)16O for incoming proton beam at 1350 keV. Details of fluorine distribution over a few micrometres have been obtained by comparison of the energy spectrum of alpha-particles from the reaction in teeth with that of the standard target of CrF3. The average concentration of fluorine is 1.5 mg/g in the enamel of healthy tooth, while the concentration is below 0.3 mg/g (MDL) in the caried zones. These values can reach 13 mg/g in the enamel of a fluorine tooth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02450945
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  • 5
    Electronic Resource
    Electronic Resource
    PIXE microanalysis of human serum and amniotic fluid (1985)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 6 (1985), S. 153-161 
    Details
    ISSN: 0392-6737
    Keywords: Biophysical instrumentation and techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Venti campioni di siero e di liquido amniotico, prelevati a differenti donne incinte alla fine del loro periodo di gestazione, sono stati analizzati tramite l'analisi PIXE (proton-induced X-ray emission). La preparazione dei campioni, come film sottili, è trattata in dettaglio e le caratteristiche del metodo sono discusse. I risultati qualitativi e quantitativi delle analisi mostrano una similitudine tra i due liquidi biologici. Tutti i campioni contengono Cl, K, Ca, Cr, Fe, Cu, Zn e Br in differenti concentrazioni comprese tra 7.6 mg/ml e 0.1 μg/ml.
    Notes: Summary Twenty serum and amniotic-fluid samples, drawn from different pregnant womens at the end of their gestation period, have been analysed by proton-induced X-ray emission (PIXE) analysis. Sample preparation, as thin film, is treated in detail and method characteristics are discussed. Qualitative and quantitative results show a similarity between two biological liquids. All samples include Cl, K, Ca, Cr, Fe, Cu, Zn and Br in different concentrations from 7.6 mg/ml to 0.1 μg/ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02450678
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  • 6
    Electronic Resource
    Electronic Resource
    A single nodule on the leg as a cutaneous manifestation of myelogenous leukaemia (2005)
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 19 (2005), S. 0 
    Details
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-3083.2005.01244.x
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  • 7
    Electronic Resource
    Electronic Resource
    Preliminary tests for the electron cyclotron resonance ion source coupled to a laser ion source for charge state enhancement experiment : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 1119-1121 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: At the Laboratori Nazionali del Sud we have designed a hybrid ion source, consisting of a laser ion source as first stage, which gives intense currents of electrons and of multiply charged ions, followed by an electron cyclotron resonance (ECR) ion source as a second stage, which should act as a charge state multiplier. The ECR ion source coupled to a laser ion source for charge state enhancement (ECLISSE) experiment has been funded by INFN and preliminary experiments have been carried out at IPPLM in Warsaw, in order to confirm the beneficial effects of the axial magnetic field of the ECR ion source on the extraction of the ions from the LIS, as foreseen by calculations. The description of the ECLISSE experiment and of the results of the preliminary tests will be reported. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150402
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  • 8
    Electronic Resource
    Electronic Resource
    Metallic etching by high power Nd:yttrium–aluminum–garnet pulsed laser irradiation (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 4330-4334 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A Nd:yttrium–aluminum–garnet pulsed laser, with 1064 nm wavelength, 9 ns pulse width, and 0.9 J maximum pulse energy, is employed to irradiate in vacuum different metal targets (Al, Ti, Ni, Cu, Ta, W, Au, and Pb). In order to measure the erosion thresholds, the etching rates, and the chemical yields, a mass quadrupole spectrometer is interfaced to the vacuum chamber. Etching process shows a threshold, which ranges between 0.1 and 1.6 J/cm2 for lead and tungsten, respectively. Etching rates range between 0.3 and 10 μg/pulse for copper and lead, respectively. The irradiation produces chemical yields ranging between 0.04 and 0.6 atoms/100 eV for copper and lead, respectively. A simple theoretical approach is presented to justify obtained results. The objective of collected data concerns the possibility to use ejected atoms, neutral and ionized, in an electron cyclotron resonance ion source, in order to provide high current, multiply charge ion beams. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1287628
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  • 9
    Electronic Resource
    Electronic Resource
    Off-line efficiency measurements of the microwave discharge source (MIDAS) at the Laboratorio Nazionale del Sud : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 747-749 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The aim of the EXCYT project at the Laboratorio Nazionale del Sud (LNS) is the production of radioactive beams, and for this we need to carry out the ionization of recoils produced in a target with as high an efficiency as possible. In order to obtain efficient positive ionization the microwave discharge ion source (MIDAS) has been designed to be followed by a charge exchange canal. A prototype of this source has been designed, built, and tested at the LNS and a description of this source is presented in this article along with the preliminary results and a design of the final version. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148564
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  • 10
    Electronic Resource
    Electronic Resource
    Production of low energy, high intensity metal ion beams by means of a laser ion source : Papers from the Ninth International Conference on Ion Sources (2002)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 650-653 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The ECLISSE (ECR coupled to Laser Ion Source for charge State Enhancement) project started in 1999 with the aim to obtain an intense beam of highly charged ions (pulsed mode) by means of the coupling between a laser ion source (LIS) and an electron cyclotron resonance (ECR) ion source. The major points to be investigated appeared to be the coupling efficiency between the ion beam produced by the LIS and the ECR plasma, as well as the possibility to enhance the available charge state by an ECRIS with respect to the standard methods which are used to produce ion beams from solid samples (e.g., evaporation, sputtering). The calculations have confirmed that this concept may be effective, provided that the ion energy from the LIS is lower than a few hundred eV. The main features of the calculations will be shown, along with the results obtained in the off-line test facility at laser power densities below 1011 W/cm2. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1430514
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