Search results for "Germ"
showing 10 items of 3358 documents
O2-Loading Treatment of Ge-Doped Silica Fibers: A Radiation Hardening Process
2016
International audience; The effects of a high-pressure O2-loading treatment on the radiation response of Ge-doped optical fibers (OFs) were investigated. We found that the incorporation of high concentration of interstitial molecular oxygen remarkably enhances the resistance to ionizing radiation of Ge-doped OFs in the UV-Visible domain and, at the same time, improves the transmission of UV light in the unirradiated OF sample. By comparison with previously reported results, the O2-loading treatment turned out to increase the radiation resistance of Ge-doped OFs more efficiently than F or Ce codoping. The understanding of such amelioration relies in basic radiation-induced mechanisms that we…
Optical properties and photosensitivity of vacuum synthesized Ge-doped sol-gel amorphous SiO/sub 2/
2005
We report optical and electron paramagnetic resonance investigations of gamma ray irradiation effects in sol-gel Ge-doped amorphous SiO/sub 2/. The studied materials have Ge-doping levels up to 10/sup 4/ molar part per million and were densified by two routes differing for the atmosphere: O/sub 2/+N/sub 2/ or vacuum. The obtained results evidence that irradiation affects matrix sites inducing paramagnetic defects. Furthermore, the comparison between the two densification procedures shows that vacuum atmosphere induces higher radiation sensitivity.
Radiation Response of Ce-Codoped Germanosilicate and Phosphosilicate Optical Fibers
2016
We report an experimental investigation on the effects of Ce-codoping in determining the radiation response of germanosilicate and phosphosilicate Optical Fibers (OFs) in the UV-Visible domain and up to doses of $1~\hbox{MGy}({\rm SiO}_{2})$ . We show that the addition of Ce strongly impacts the Radiation Induced Attenuation (RIA) of both types of fibers. In the first case the radiation induced losses increase, whereas in the second one decrease. By combining the online RIA measurements with the Electron Paramagnetic Resonance (EPR) ones, we are able to infer the basic microscopic mechanisms taking place under irradiation, which involve the cerium codopant and some of the known Ge-related o…
Influence of Oral Health Care Systems on Future Career Environment of Dental Students in Europe
2021
Oral healthcare is organized subsidiarily and independently by nation states in Europe and also within the EU and consequently, major differences between the nation states and the various oral healthcare systems in Europe are present. The socialization in the respective catchment area can have an impact on the job choice and the perception of employment opportunities of different professional groups. Therefore, the purpose of this survey was to elucidate the influence of different oral healthcare systems on students living or studying in the respective catchment area. A questionnaire (in English, French, German, Italian, and Spanish) with 18 different components was administered. Data on ge…
Akateemisen saksan kielen rooli suomalaisopiskelijoiden näkökulmasta
2009
In most academic disciplines nowadays, German plays only a minor role in academic publishing. On the other hand, academic mobility has increased and Germany is the most popular target country for Finnish students. For any successful academic exchange with German-speaking countries, a sound competence in German is a major advantage. To explore students’ opinions about multilingualism and the role of German, an online-survey amongst 20400 students, with 3516 respondents (17,3 %), was conducted in 2008. The main emphasis was on language skills needed for studying in Finland and German-speaking countries, on possible culture-bound practices and on students’ self-evaluation of oral skills in Ger…
La disciplina tedesca (e quella austriaca) sull'ordine di protezione europeo e sulla tutela della vittima
2016
La Direttiva 2011/99/UE, inserendosi nel contesto delle azioni dell'Unione europea in materia di tutela delle vittime, ha previsto il c.d. ordine di protezione europeo: misura volta ad assicurare la protezione della persona offesa dal reato, a prescindere dallo Stato membro in cui essa si trovi. Nel dare seguito alla direttiva, i diversi Paesi hanno adottato soluzioni parzialmente differenti. Il contributo si incentra sulla disciplina introdotta in Germania e in Austria, dove la corrispondente riforma si colloca nel quadro di peculiari scelte normative di fondo, inerenti al ruolo della vittima nel processo penale.
Effect of Germacrene-Rich Essential Oil of Parentucellia latifolia (L.) Caruel Collected in Central Sicily on the Growth of Microorganisms Inhabiting…
2022
In the present study, the chemical composition of the essential oil from aerial parts of Parentucellia latifolia (L.) Caruel collected in Central Sicily was analyzed by gas chromatography and gas chromatography–mass spectrometry. The results showed the presence of sesquiterpene hydrocarbons, with germacrene D and germacrene B accounting, respectively, for 59.2% and 24.3% of the total oil. Different colonies of bacteria and fungi frequently affect cellulosic objects such as books stored in libraries and museums. The antibacterial and antifungal activity against some microorganisms infesting historical-artistic craftsmanship was determined, demonstrating that the essential oil was particular…
Zur Sprache der Chronik der Pfarrei Zawada Ks.: Eine korpusbasierte Untersuchung zu deutsch-polnischen Sprachkontakterscheinungen auf der Ebene der O…
2022
The Chronicle of the parish Zawada Ks. provides an insight into the older and more recent history of an Upper Silesian parish. Written by, initially only German, later both German- and Polish-speaking pastor, the language of the chronicle illustrates the language contacts in multiple areas. The article focuses on contact phenomena that can be observed at the level of orthography.
Intron variants of the p53 gene are associated with increased risk for ovarian cancer but not in carriers of BRCA1 or BRCA2 germline mutations
1999
Two biallelic polymorphisms in introns 3 and 6 of the p53 gene were analysed for a possible risk-modifying effect for ovarian cancer. Germline DNA was genotyped from 310 German Caucasian ovarian cancer patients and 364 healthy controls. We also typed 124 affected and 276 unaffected female carriers with known deleterious BRCA1 or BRCA2 germline mutation from high-risk breast-ovarian cancer families. Genotyping was based on PCR and high-resolution gel electrophoresis. German ovarian cancer patients who carried the rare allele of the MspI restriction fragment length polymorphism (RELP) in intron 6 were found to have an overall 1.93-fold increased risk (95% confidence internal (CI) 1.27–2.91) w…