Autor: Wierzba, Paweł - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Tuning transfer function of fiber-optic Fabry–Pérot interferometer via introduction of birefringence in the cavity
Autorzy:: Hirsch, Marzena
Wierzba, Paweł
Jędrzejewska-Szczerska, Małgorzata
Powiązania:: https://bibliotekanauki.pl/articles/174917.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: fiber optic interferometer
birefringence
fiber optic sensors
Fabry-Perot interferometer
Opis:: The study investigates the impact of birefringence exhibited by the cavity material of a fiber-optic Fabry–Pérot interferometer on its transfer function. The theoretical approach to analyze the effect of birefringence in the cavity of a plane Fabry–Pérot interferometer is described. The case of high- and low-finesse interferometer is investigated. It is shown that introduction of a birefringent medium of optimized parameters can be used to increase the density of interference fringes in certain wavelength range – the feature can be used either for reduction of the cavity length in an interferometric sensor or operation with sources of narrower spectral characteristics.
Źródło:: Optica Applicata; 2019, 49, 2; 241-248
0078-5466
1899-7015
Pojawia się w:: Optica Applicata
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Incidence and prevalence of Systemic Sclerosis (SSc) in Poland - differences between rural and urban regions
Autorzy:: Kanecki, Krzysztof
Goryński, Paweł
Tarka, Patryk
Wierzba, Waldemar
Tyszko, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/986639.pdf
Data publikacji:: 2017
Wydawca:: Instytut Medycyny Wsi
Tematy:: epidemiology
rare diseases
hospitalization
Opis:: Introduction. Systemic sclerosis (SSc) is a rare and potentially severe connective tissue disease, characterized by skin fibrosis and involvement of internal organs. Because of its rarity and heterogeneous clinical presentation, reliable epidemiological studies on SSc have been particularly difficult to carry out. Objectives. The purpose of this study was to present SSc epidemiology among hospitalized patients in Poland. Materials and method. The analysis was based on population-based administrative data, taken from a Polish hospital morbidity study carried out by the National Institute of Public Health between January 2008 – December 2012. Results. Analyzed data covered 9,049 hospitalization records. The final sample comprised 3,653 patients with first-time hospitalizations for SSc. The average age of the sample was 53 years (SD 16.2; range 0–91 years); 84% of patients were female and 16% male. Based on hospitalization registers, the average SSc incidence was estimated to be 1.9/100,000 per year and peak age of incidence was 55 years. The point prevalence was estimated to be 9.4/100,000 at the end of 2012. SSc was more common in females, with F:M ratio ranging from 6.2:1–4.6:1 depending on the year. Analysis of hospitalization trends revealed that overall numbers of SSc hospitalizations increased, while first-time hospitalizations decreased between 2008–2012. Clusters of higher incidence were observed in more rural regions vs. urban regions. Conclusion. Estimated incidence of SSc in Poland was comparable to reported incidence in other European countries. Analysis of demographic factors and reports of clusters of higher incidence may suggest the existence of environmental risk factors for the development of SSc. These observations may require further research.
Źródło:: Annals of Agricultural and Environmental Medicine; 2017, 24, 2
1232-1966
Pojawia się w:: Annals of Agricultural and Environmental Medicine
Dostawca treści:: Biblioteka Nauki

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