Search results for "s.r.l.s."
showing 10 items of 213 documents
Towards high-resolution laser ionization spectroscopy of the heaviest elements in supersonic gas jet expansion
2017
Resonant laser ionization and spectroscopy are widely used techniques at radioactive ion beam facilities to produce pure beams of exotic nuclei and measure the shape, size, spin and electromagnetic multipole moments of these nuclei. However, in such measurements it is difficult to combine a high efficiency with a high spectral resolution. Here we demonstrate the on-line application of atomic laser ionization spectroscopy in a supersonic gas jet, a technique suited for high-precision studies of the ground- and isomeric-state properties of nuclei located at the extremes of stability. The technique is characterized in a measurement on actinium isotopes around the N=126 neutron shell closure. A…
Descriptive literature review of the added value of virtual realities in vocational education and training
2020
Tarkastelemme tässä katsaus artikkelissa virtuaalitodellisuusteknologian (VR) hyödyntämistä ammattikasvatuksen kentällä viimeisen kymmenen vuoden aikana. Tavoitteenamme on selvittää, minkälaista empiiristä tutkimusta aiheesta on tehty ja minkälaista lisäarvoa VR tuottaa ammattikasvatukselle 13 tutkimusartikkelin perusteella. Tulosten perusteella tutkimus VR:n hyödyntämisestä ammattikasvatuksessa on yhtäältä lisääntynyt, mutta toisaalta empiirisiä tuloksia on vielä suhteellisen vähän. Tutkimus on toistaiseksi keskittynyt käyttökokemuksiin erilaisia VR-sovelluksia hyödynnettäessä. Havaitsemamme lisäarvo liittyy erityisesti reaalimaailman rajoitusten ylittämiseen ja erilaisten oppimisprosessie…
Comparative study of upper lip frenectomy with the CO2 laser versus the Er, Cr:YSGG laser
2012
Objectives: To compare upper lip frenulum reinsertion, bleeding, surgical time and surgical wound healing in frenectomies performed with the CO2 laser versus the Er, Cr:YSGG laser. Study design: A prospective study was carried out on 50 randomized pediatric patients who underwent rhomboidal resection of the upper lip frenulum with either the CO2 laser or the Er,Cr:YSGG laser. Twenty-five patients were assigned to each laser system. All patients were examined at 7, 14, 21 days and 4 months after the operation in order to assess the surgical wound healing. Results: Insertion of the frenulum, which was preoperatively located between the upper central incisors, migrated to the mucogingival junc…
Surface modifications induced by nanosecond pulsed Nd:YAG laser irradiation of metallic substrates
2006
International audience; Substrate surface preparation is a key step in coating deposition process. In recent years, pulsed laser cleaning has emerged as a possible technique to challenge the traditional preparation methods (based on degreasing and eventually grit-blasting). The laser operated at short-pulse mode offers high cleaning efficiency and therefore has been largely used. In a specific process named PROTAL®, a nanosecond pulsed laser is introduced to prepare the surface simultaneously to thermal spraying, with the purpose of eliminating the contaminants and generating favorite surface conditions for coating deposition. This study aims at clarifying some fundamental aspects of nanose…
On-line implementation and first operation of the Laser Ion Source and Trap at ISOLDE/CERN
2015
13 pags.; 12 figs.; 2 tab.; Open Access funded by CERN
Impact of resection margin status and revision transoral laser microsurgery in early glottic cancer: analysis of organ preservation and local disease…
2022
Abstract Introduction Transoral laser microsurgery represents the treatment of choice for early glottic cancer. Its use and effectiveness are mainly related to laryngeal exposure and deep extension of tumor. Histopathologic assessment of surgical margin presents a main issue about transoral laser microsurgery and complete oncological excision. Objective The aim was to analyze the impact of revision surgery on organ preservation and local disease control in patients with early glottic cancer treated by transoral laser microsurgery. Methods We carried out a retrospective study on a cohort of 153 patients with early glottic cancer (Tis, T1, T2) treated by transoral laser microsurgery. Resectio…
Comparison of diode laser – Oral tissue interaction to different wavelengths. In vitro study of porcine periodontal pockets and oral mucosa
2020
[Background] The aim of this in vitro study was to evaluate the effect of diode lasers at different wavelengths and power settings in handmade incisions in periodontal pockets and in oral mucosa of porcine tissue considering thermal damage, necrosis and the affected area of the soft tissue.
Predetermined for Predestination? On the Assumed Notion of Predestination in the Dead Sea Scrolls
2019
The present article argues that the concept of predestination does not on the whole lend itself to Qumran studies. Unlike the writings of Augustine and Calvin, the scrolls contain nothing like a do...
Phytopathogenic Bacteria Associated with Bacterioses of Common Oak (Quercus robur L.) in Ukraine
2022
Studying the biological characteristics of the causative agents of bacteriosis of the common oak (Quercus robur L.) (to highlight the links between the key factors of pathogenesis and bacterial groups) is a new and relevant area of research. This work aims to identify the species composition of phytopathogenic bacteria associated with common oak bacteriosis and to study the morphological, cultural, and biochemical properties of pathogens. To establish the general phytosanitary state of the surveyed stands, classical forest inventory and phytopathological (visual on based on typical symptoms of the disease and macroscopic) methods were used. The properties of isolated bacteria were studied u…
Une immobilité quotidienne marginale ? Enjeux, problèmes et piste de recherche. Analyse à partir d'un modèle d'équations structurelles sur des donnée…
2017
16ème séminaire francophone de socio-économie des transports : Politiques de transport et aide à la décision, Connaissances et outils, Marne-la-Vallée, France, 18-/05/2017 - 19/05/2017; L'immobilité apparaît souvent comme une pratique de "dominés". Mais elle peut être aussi considérée comme un marqueur de variabilité des mobilités quotidiennes. Trois problèmes de l'analyse de la mobilité sont : le biais de non-réponse, une temporalité d'observation trop réduite et une description incomplète des causes de l'immobilité.