Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "RE" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 28
Tytuł:
Waterfront (Re)Development Projects in Europe: Divergence and Convergence of Approaches
Autorzy:
Schubert, Dirk
Powiązania:
https://bibliotekanauki.pl/articles/2021074.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Harbours
re)development projects
waterfront
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2018, 188; 12-21
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The cross-cultural conceptualization of ‘I’m lovin’ it’ between English and Polish
Autorzy:
Waliński, Jacek Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/2083378.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
love
emotions
re-conceptualization
approximation
Cultural Linguistics
miłość
emocje
re-konceptualizacja
aproksymacja
Lingwistyka kulturowa
Opis:
This study discusses the cross-cultural re-conceptualization of the slogan ‘I’m lovin’ it’, popularized in Poland by a global fast-food restaurant chain, which occurs in the inter-linguistic transfer between English and Polish. The analytical framework for the study is provided by Cultural Linguistics and the Re-conceptualization and Approximation Theory. The analysis is based on proposals submitted by 45 translators asked to come up with a Polish equivalent of the slogan. The results indicate that because the semantic networks for the meaning of love do not overlap between English and Polish perfectly, attempts at the cross-cultural transfer of the slogan can be approached only as more or less accurate approximations of the original meaning constructed according to culture-specific norms, expectations, and attitudes.
Artykuł omawia międzykulturową re-konceptualizację znaczenia sloganu ‘I’m lovin’ it’, spopularyzowanego w Polsce przez międzynarodową sieć restauracji, jaka zachodzi między językiem angielskim i polskim z perspektywy Lingwistyki kulturowej oraz Teorii re-konceptualizacji i aproksymacji. Przedstawiona analiza została oparta na propozycjach przekładu zaproponowanych przez 45 rodzimych użytkowników języka polskiego. Uzyskane rezultaty wskazują, że ponieważ sieci semantyczne dla znaczenia czasownika ‘love’ w języku angielskim i znaczenia czasownika ‘kochać’ w języku polskim nie do końca się pokrywają, próby przeniesienia znaczenia tego sloganu na język polski można traktować jednie jako mniej lub bardziej trafne aproksymacje oryginalnego znaczenia według norm, oczekiwań i postaw funkcjonujących w kulturze docelowej.
Źródło:
Kwartalnik Neofilologiczny; 2018, 4; 517-530
0023-5911
Pojawia się w:
Kwartalnik Neofilologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microscopic and Spectroscopic Research of the MWCNTs-Re Nanocomposites
Badania mikroskopowe i spektroskopowe nanokompozytów typu MWCNTs-Re
Autorzy:
Dobrzańska-Danikiewicz, A. D.
Wolany, W.
Cichocki, D.
Łukowiec, D.
Powiązania:
https://bibliotekanauki.pl/articles/351459.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
microscopic research
spectroscopic research
MWCNTs-Re nanocomposities
badania mikroskopowe
badania spektroskopowe
nanokompozyty typu MWCNTs-Re
Opis:
he combination of TEM research and Raman spectroscopy to characterization of MWNTs-Re nanocomposites gives a new notion about the structure and quality of materials obtained. TEM studies indicate that the functionalization method significantly influences the morphology of obtained MWCNTs-Re nanocomposites. Due to the specific spectrum recorded for the MWCNTs they can be distinguished from other forms of carbon, furthermore comparative analysis of the results at different stages of the manufacturing process confirms the covalent modification of the MWCNTs structure. The D-band intensity compared to the G-band intensity provides valuable information about the quality of the sample, in particular indicates the existence of contamination and/or the presence of structural defects. Preliminary results suggest that the high-temperature manufacturing process of MWCNTs-Re nanocomposite improves the quality of the carbon material intended for the experiment.
Wykorzystanie transmisyjnej mikroskopii elektronowej oraz spektroskopii ramanowskiej, zastosowanych do scharakteryzowania nanokompozytów typu MWCNTs-Re, umożliwia określenie struktury i jakości uzyskanego materiałów. Badania TEM wskazują, że sposób funkcjonalizacji znacząco wpływa na morfologię otrzymanych nanokompozytów typu MWCNTs-Re. Charakterystyczne widmo ramanowskie uzyskane dla nanorurek wielościennych umożliwia ich identyfikację, ponadto analiza porównawcza uzyskanych wyników na różnych etapach procesu wytwórczego potwierdza kowalencyjną modyfikację struktury MWCNTs. Stosunek intensywności pasma D do intensywności pasma G informuje o jakości badanych próbek, w szczególności wskazuje na występowanie ewentualnych zanieczyszczeń i/lub obecność defektów strukturalnych. Wstępne wyniki badań wskazują, że proces wytwarzania nanokompozytu typu MWCNTs-Re z zastosowaniem wysokiej temperatury wpływa na poprawę jakości wyjściowego materiału nanorurkowego.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 3A; 2047-2051
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mg-Al-RE Magnesium Alloys for High-Pressure Die-Casting
Autorzy:
Braszczyńska-Malik, K.
Powiązania:
https://bibliotekanauki.pl/articles/383025.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnesium alloys Mg-Al-RE
high-pressure die casting
stopy magnezu Mg-Al-RE
odlewanie wysokociśnieniowe
Opis:
Experimental Mg-Al-RE type magnesium alloys for high-pressure die-casting are presented. Alloys based on the commercial AM50 magnesium alloy with 1, 3 and 5 mass % of rare earth elements were fabricated in a foundry and cast in cold chamber die-casting machines. The obtained experimental casts have good quality surfaces and microstructure consisting of an α(Mg)-phase, Al11RE3, Al10RE2Mn7 intermetallic compound and small amount of α+γ eutectic and Al2RE phases.
Źródło:
Archives of Foundry Engineering; 2014, 14, 2; 49-52
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tem Observation Of Age-Hardening Precipitation In Mg-Gd-Y Alloys As Different Gd/Y Ratio
Zastosowanie mikroskopii TEM do obserwacji wydzieleń po utwardzaniu wydzieleniowym w stopach Mg-Gd-Y o różnych stosunkach Gd/Y
Autorzy:
Matsuoka, Y.
Watanabe, K.
Nakamura, J.
Lefebvre, W.
Saikawa, S.
Ikeno, S.
Matsuda, K.
Powiązania:
https://bibliotekanauki.pl/articles/351744.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Mg-RE alloy
precipitation behavior
TEM
HAADF-STEM
stop Mg-RE
zachowanie wydzieleń
transmisyjna mikroskopia elektronowa (TEM)
Opis:
In this study, the early stage of aging in Mg-Gd-Y alloys has been observed by transmission electron microscopy (TEM), high angle annular dark field – scanning transmission electron microscopy (HAADF-STEM) and calculations of images and electron density and bond overlap population (BOP) by first principal to understand the origin of precipitation in this alloy. The small hexagon of 0.37 nm is the first precipitate in this alloy, and this is the evidence of short range ordering of D019 structure. This is referred as the pre β”-phase. In the peak aged condition, β’ phase with bco structure was mainly observed.
W pracy przedstawiono mikroskopowe obserwacje TEM wczesnego etapu starzenia stopów Mg-Gd-Y. Ponadto badania prowadzono z użyciem skaningowej transmisyjnej mikroskopii elektronowej. Wykorzystano zjawisko niekoherentnego rozpraszania w ciemnym polu i materiał obrazowano przy pomocy detektora pierścieniowego, który zbiera elektrony rozproszone pod dużymi kątami (HAADF-STEM). Przeprowadzono także analizę obrazów, obliczenie gęstości elektronowej i ilości nakładających się wiązań w celu zrozumienia źródła wydzieleń w ww. stopie. Pierwszym wytrąceniem w stopie jest mały sześciokąt o wielkości 0,37 nm, a dowodem tego jest uporządkowanie krótkiego zasięgu struktury D019.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2A; 971-972
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
To Settle or to Leave Again? Patterns of Return Migration to Poland During the Transition Period
Autorzy:
Fihel, Agnieszka
Górny, Agata
Powiązania:
https://bibliotekanauki.pl/articles/498755.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
return migration
Polska
re-emigration
temporary migration
Opis:
The article discusses the notion of return migration with regard to its permanency and temporariness. In reference to selective patterns of return migration, factors conducive to permanent returns and to re-emigration, i.e. subsequent migration after the return, are examined with the use of a logistic regression model. Analyses demonstrated in the article are devoted to return migration to Poland in 1989-2002 and based on the 2002 Polish census data. The obtained results confirm earlier findings on the major role of the level of human capital and family attachments in shaping the nature of the return waves. It was revealed that return migrants who decided on a longer stay in Poland were more often living in Polish urban areas, and had higher human capital and stronger family attachments to Poland, when compared to re-emigrants. It was also observed that return migrants possessing dual nationality were the most likely to engage in re-emigration, while descendants of Polish emigrants tended to settle in Poland on a more permanent basis.
Źródło:
Central and Eastern European Migration Review; 2013, 2, 1; 55-76
2300-1682
Pojawia się w:
Central and Eastern European Migration Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and properties of suction-cast Pr-(Fe, Co)-(Zr, Nb)-B rod magnets
Autorzy:
Pawlik, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/2086840.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bulk metallic glasses
bulk nanostructured magnets
RE-Fe-B magnets
miniature magnet
szkło metaliczne masywne
magnes nanostrukturalny
magnes RE-Fe-B
magnes miniaturowy
Opis:
The rod specimens were produced from Pr9Fe50 + xCo13Zr1Nb4B23 – x (x = 0, 5, 8) alloys using the suction-casting technique. Subsequent devitrification annealing of those samples resulted in the change of their phase structure and magnetic properties. For annealed specimens of all investigated compositions, the Rietveld analyses of X-ray diffractions have shown the presence of three crystalline phases: the hard magnetic Pr2Fe11.2Co2.8B, soft magnetic α-Fe, and paramagnetic Pr1 + xFe4B4, which have precipitated within the amorphous matrix. This technique allowed us to determine the weight fractions of constituent phases. Furthermore, the microstructural changes with the alloy composition were observed. Magnetic measurements of annealed rods allowed us to calculate the switching field distributions (SFD) and δM plots in order to determine the strength and character of magnetic interactions between grains of constituent phases.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 5; e138971, 1--7
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-resolution thermal face dataset for face and expression recognition
Autorzy:
Kowalski, M.
Grudzień, A.
Powiązania:
https://bibliotekanauki.pl/articles/221388.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
face database
biometrics
thermal face recognition
infrared
face re-identification
Opis:
Development of facial recognition or expression recognition algorithms requires input data to thoroughly test the performance of algorithms in various conditions. Researchers are developing various methods to face challenges like illumination, pose and expression changes, as well as facial disguises. In this paper, we propose and establish a dataset of thermal facial images, which contains a set of neutral images in various poses as well as a set of facial images with different posed expressions collected with a thermal infrared camera. Since the properties of face in the thermal domain strongly depend on time, in order to show the impact of aging, collection of the dataset has been repeated and a corresponding set of data is provided. The paper describes the measurement methodology and database structure. We present baseline results of processing using state-of-the-art facial descriptors combined with distance metrics for thermal face re-identification. Three selected local descriptors, a histogram of oriented gradients, local binary patterns and local derivative patterns are used for elementary assessment of the database. The dataset offers a wide range of capabilities - from thermal face recognition to thermal expression recognition.
Źródło:
Metrology and Measurement Systems; 2018, 25, 2; 403-415
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Degradation Characterization and Mechanisms of Warm Rolled Mg-1.6Gd with 95% Reduction Ratio for Biodegradable Implant Applications
Autorzy:
Zakiyuddin, Ahmad
Irawan, Arya Abietta
Susanti, Oknovia
Harjanto, Sri
Powiązania:
https://bibliotekanauki.pl/articles/356740.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biodegradable implants
Mg-1.6Gd
warm rolling
Mg-RE
EIS
Opis:
Mg-1.6Gd binary alloy was subjected to uniaxial warm rolling at a unidirectional and cross-sectional with a reduction ratio of 95% in order to observe the relationship between its microstructural changes to the degradation behavior. The warm rolling was performed at a temperature range of its recrystallization temperature, which were 400°C and 560°C, and a feed rate of 10 mm/min. Degradation behaviors of Mg-1.6Gd binary alloy was evaluated by means of potentiodynamic polarization and hydrogen evolution test in modified Kokubo’s SBF solution at temperature of 37 ± 1ºC. The lowest corrosion rate of 0.126 mm/year derived from potentiodynamic polarization test was showed by unidirectional-rolled specimen at temperature of 560°C. Hydrogen evolution test results showed the lowest hydrogen gas formed during 24 hours of immersion was found on unidirectional-rolled specimen at temperature of 560°C with a rate of 0.268 cc/cm2/hours. While cross rolled specimens showed a high corrosion and hydrogen evolution rate of 20 mm/year and 0.28 cc/cm2/hours.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 3; 1015-1018
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Microstructure and Mechanical Properties of Magnesium Alloys Mg-Li-RE After the Process of Casting and Extrusion
Autorzy:
Bednarczyk, I.
Kuc, D.
Mikuszewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/353094.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ultra-light Mg-Li-RE alloys
extrusion process
microstructure
mechanical properties
Opis:
The article presents tests results of the influence of extrusion process on the microstructure and mechanical properties of magnesium alloy with lithium and rare earth elements with symbols LAE442 and LAE842. Microstructures of magnesium alloys after extrusion were compared with microstructure after casting and homogenisation. Presented results show the mechanical properties marked in static compression test in room temperature. It was stated that alloy LAE842 is characterised with better plasticity than the alloy LAE442.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 35-38
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
KIM JESTEŚMY I CO PRZEŻYLIŚMY? MIGRANCI NIEPEŁNI WOBEC SPOŁECZNOŚCI POCHODZENIA
WHO ARE WE AND WHAT HAVE WE EXPERIENCED? THE INCOMPLETE MIGRANTS AND THEIR COMMUNITY OF ORIGIN
Autorzy:
Niedźwiedzki, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/579690.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
PENDULUM MIGRATION
IDENTITY
RE-ADAPTATION OF MIGRANTS TO THE GROUP OF ORIGIN
Opis:
The reconstruction of the migrants’ identity is an essential condition for the migrants’ adaptation in their new place of settlement. Such reconstruction in the case of incomplete, pendulum migration is more complicated. This type of migration is characterized by its relatively short term nature and multiple travels of migrants between their country of origin and the target country. The identity of the so-called pendulum migrants is composed of cultural elements belonging both to the receiving society and to the native one. As a result migrants confront components of their identity constructed during interactions in the host society with their group of origin whenever they come back to their home country. It is a special process of re-adaptation to their original society. One can distinguish different types of narrations used by pendulum migrants. Those diverse techniques of communication differ in their cognitive and emotional components. The narrations fulfill many functions. For instance, they sustain social relations and social ties, satisfy the need for social prestige and recognition, and facilitate the acceptance of the negative experiences of migration. The different types of narrations are applied contextually and situationally depending on the motive, goal and the partner of the interaction. The paper contains a detailed analysis of the features of the above-mentioned narrations and the circumstances of their formation and use.
Źródło:
Studia Migracyjne - Przegląd Polonijny; 2011, 37, 2(140); 115-129
2081-4488
2544-4972
Pojawia się w:
Studia Migracyjne - Przegląd Polonijny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomass and wind energy as sources of renewable energy for a more sustainable environment in Indonesia : a review
Autorzy:
Erdiwansyah
Gani, Asri
Mamat, Rizalman
Mahidin
Sudhakar, K.
Rosdi, S.M.
Husin, Husni
Powiązania:
https://bibliotekanauki.pl/articles/2203119.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Biomass
wind energy
hybrid
RE
biofuels
biomasa
energia wiatrowa
biopaliwa
energia odnawialna
Opis:
Pollution continues to experience a rapid increase so cities in the world have required the use of renewable energy. One of the keys that can prevent climate change with a sustainable system is renewable energy. Renewable energy production, especially for hybrid systems from biomass and wind, is the objective of the analysis in this work. The potential of feedstock for different biofuels such as bio-diesel, bio-ethanol, bio-methane, bio-hydrogen, and biomass is also discussed in this paper. The sustainability of the energy system for the long term is the main focus of work in this investigation. The configuration of the hybrid system between biomass energy and wind energy as well as some problems from various design factors are also presented. Based on the findings, this alternative energy utilization through biomass-based hybrids can save costs and improve environmental conditions, especially for the electrification of off-grid rural areas. This paper will provide important information to policymakers, academics, and investors, especially in carrying out the development and factors related to the utilization of wind-biomass-based hybrid energy systems.
Źródło:
Archives of Environmental Protection; 2022, 48, 3; 57--69
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrocatalytically active Ni-Re binary alloys electrodeposited with superimposed magnetic field
Katalitycznie aktywne stopy Ni-Re osadzane w zewnętrznym polu magnetycznym
Autorzy:
Żabiński, P. R.
Franczak, A.
Kowalik, R.
Powiązania:
https://bibliotekanauki.pl/articles/355013.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stopy niklowo renowe
osadzanie elektrolityczne
electrodeposition
Ni-Re alloys
magnetic field
hydrogen evolution
Opis:
The aim of this work was to obtain Ni-Re binary alloy by a simple method of electrodeposition. Nickel - rhenium alloys have been deposited from nickel sulfamate and ammonium perrhenate electrolyte with citrate-anion additives. The effect of magnetic field superimposed during electrodeposition was studied. The impacts of that parameter on hydrogen evolution process for obtained Ni-Re alloys were examined. The deposited layers were determined by optical and scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray fluorescence (XRF).
Celem pracy było uzyskanie stopów Ni-Re metoda osadzania elektrolitycznego. Stop niklowo renowy osadzano z elektrolitu zawierającego sulfaminian niklu oraz nadrenian amonu. Stosowano bufor cytrynianowy. Badano wpływ przyłożonego zewnętrznego pola magnetycznego podczas osadzania stopu na wydzielanie wodoru na tak uzyskanym stopie. Badano osadzone warstewki stopowe za pomocą mikroskopu optycznego oraz mikroskopu skaningowego i metodami XRD oraz XRF.
Źródło:
Archives of Metallurgy and Materials; 2012, 57, 2; 495-501
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social laboratories as a method of testing solutions to the problems of post-release prisoner assistance in Poland – A case of the activities of the “Mateusz” Association for Prevention and Rehabilitation (Stowarzyszenie Profilaktyki i Resocjalizacji “Mateusz”)
Autorzy:
Piątek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2196370.pdf
Data publikacji:
2020-10-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
post-release assistance
‘Mateusz’ Re-adaptation Centre
positive adaptation
‘resilience’
‘empowerment’
social laboratory
Opis:
The Polish post-release assistance system for prisoners suffers from multiple dysfunctions, such as formalization, excessive bureaucracy, low flexibility, and a chronic shortage of funds. Attempts have been made to solve these issues by departing from a standard set of measures, introducing changes to the funding mechanism, improving personnel training, and ensuring a higher level of openness to more innovative measures. The first part of this paper describes the operations of the ‘Mateusz’ Re-adaptation Centre in Toruń, with a special focus on the ‘Dąbrowski method’ and on positive adaptation, which constitute the basis of the Centre’s activities and are referred to as ‘initial post-release prisoner assistance.’ The second part of the paper presents the concept of social laboratories, through which the theoretical concepts of ‘resilience’ and ‘empowerment’ will be used to conduct a two- or three-year-long research at the Centre to prepare a proposal for reforming the Polish post-release assistance system and ensure improved flexibility, beneficiary empowerment and, above all, greater effectiveness in the rehabilitation process.
Źródło:
Problemy Polityki Społecznej. Studia i Dyskusje; 2020, 49; 13-24
1640-1808
Pojawia się w:
Problemy Polityki Społecznej. Studia i Dyskusje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active optical fibres for application in laser and broadband ASE sources
Autorzy:
Dorosz, D.
Dorosz, J.
Zając, A.
Żmojda, J.
Kochanowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/201633.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
active optical fibres
double-clad fibres
RE doped glasses
rare earth elements (REE)
Opis:
The article brings into focus the present state of technology employing active fibres doped with rare earth (RE) ions for applications requiring power supply of several dozen watts and broadband ASE sources. Current trends in development of glasses and in construction of active fibres used in fibre sources of radiation within VIS-NIR range are presented. Technological constraints in the doping of fibre core glasses are discussed, with particular consideration of optimal RE concentration for technical applications. Characteristics of glasses are offered, and the glasses are used for manufacturing optical fibres with luminescence within the visible as well as near- and mid-infrared ranges. Also, requirements and luminescence properties concerning glasses co-doped with e.g. Nd3+/Yb3+,Tm3+/Ho3+ and Yb3+/Tb3+ are discussed. Results of research on the impact of technological parameters of glass matrices on luminescence properties of core glasses and optical fibres are quoted. For the doped glasses of which luminescence in a wide spectral range is desired, conditions for their processing into optical fibre systems are mentioned. Additionally, the impact of phonon energy in the glass on producing emission in a specified spectral range is analyzed. Furthermore, the article presents directions of technological studies to solve problems persisting in the phase of glass matrix design, as well as in determining the influence of fibre drawing process on the luminescence properties of core glasses and optical fibres, confirming the differences in luminescence stemming from the drawing process. Finally, some original designs of core glasses and active multicore fibre systems devised for construction of fibre radiation sources are presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 4; 673-682
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 28

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies