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Wyszukujesz frazę "confinement" wg kryterium: Temat


Tytuł:
Nuclear fusion - energy for future
Autorzy:
Sadowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/147936.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
fusion reaction
magnetic confinement
inertial confinement
RPI facility
SM magnetic trap
Opis:
This invited paper has been written on the 50th anniversary of the Institute of Nuclear Research (IBJ). The introduction describes basic nuclear fusion reactions and the appearance of high-temperature plasma, as well as different methods of the plasma generation and containment. The first part of the paper contains a concise description of the present status of research on controlled fusion and the construction of a thermonuclear reactor. The most important results of experiments oriented on magnetic confinement fusion (MCF) or inertial confinement fusion (ICF) are characterized. The second part of the paper presents a story of high-temperature plasma research carried out at IBJ (and now continued at IPJ) at Świerk. The main experimental facilities and scientific results, as obtained with those, are described. The most important achievements of IBJ (IPJ) researchers in the field of plasma physics and technology are indicated, and in particular: invention and development of the so-called RPI facilities producing intense plasma-ion streams, discovery and experimental study of a new configuration of a magnetic trap called the spherical multipole (SM) configuration, development of various plasma diagnostic techniques, and the optimization of different plasmafocus (PF) facilities.
Źródło:
Nukleonika; 2005, 50,suppl.3; 53-58
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Klétaj ak Pwofitasyon – Réflexion sur les agentivités discursives au temps du Covid en Guadeloupe postcoloniale
Autorzy:
Melyon-Reinette, Stéphanie
Powiązania:
https://bibliotekanauki.pl/articles/2081284.pdf
Data publikacji:
2021-06-24
Wydawca:
Akademia Pedagogiki Specjalnej. Language and Society Research Committee
Tematy:
Confinement
neocolonialism
Covid 19
tropisms
languages
Opis:
In this essay, we try to shed light on the social, political and cultural movement that manifests itself in times of crisis in Guadeloupe; especially in the context of this Covid-19 epidemic. Through this phenomenology of the epidemic in a colonized country, it is about highlighting the language practices and defense behaviors of a population regularly and traditionally subalternized and infantilized by the regal power, which censored people and was paternalistic. In the Covid context, it is visible that remained of the colonial reflexes is reinforced, and even more so in this critical context where the pretext of national security allows all abuses, including repressions. We will go through the discursive mores of Guadeloupeans by establishing a comparison between the 44-day strike and the health crisis, through the tropisms that are emerging.
Dans cet essai, nous tentons de faire la lumière sur la geste sociale, politique et culturelle qui se manifeste en temps de crise à la Guadeloupe; notamment dans le cadre de cette épidémie du Covid-19. À travers cette phénoménologie de l’épidémie en pays colonisé, il s’agit de mettre en exergue les pratiques de langues et les comportements de défense d’une population régulièrement et traditionnellement subalternisée et infantilisée par le pouvoir régalien, censeur et paternaliste. Dans le contexte Covid, il est évident que les réflexes coloniaux s’en retrouvent renforcés, et plus encore dans ce contexte critique où le prétexte de la sécurité nationale permet tous les abus, y compris la répression. Nous traverserons les mœurs discursives des Guadeloupéens en établissant une comparaison entre la grève des 44 jours et la crise sanitaire, par les tropismes qui se font jour.
Źródło:
Language, Discourse & Society; 2021, 9 (1); 45-62
2239-4192
Pojawia się w:
Language, Discourse & Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of nitrogen in carrier confinement potential engineering and optical properties of GaAs-based quantum wells heterostructures
Autorzy:
Pucicki, D.
Bielak, K.
Dawidowski, W.
Ściana, B.
Tłaczała, M.
Powiązania:
https://bibliotekanauki.pl/articles/174427.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dilute nitrides
optical properties
carrier confinement
photoluminescence
Opis:
In this work, the authors present the results of optical characterization of GaAs-based multiple quantum well heterostructures, together with energy band structure analysis. The optical properties were investigated by applying photoluminescence spectroscopy. Structures with GaInNAs, GaInAs and GaNAs multiple quantum wells emitting around 1 μm, grown by atmospheric pressure metalorganic vapor phase epitaxy, were compared in this work. The role of nitrogen in quantum well carriers confinement potential was analysed. The photoluminescence intensities of the samples were correlated with the analysis of energy band structures and the overlaps of the carriers’ wave functions. In addition, the main carrier activation energies were estimated based on photoluminescence temperature dependence and the Arrhenius plots analysis. It was deduced that the thermal photoluminescence decay is most probably related to the escape of electrons whereas the holes, independently of the potential well depth, are additionally confined by the local inhomogeneities or by the Coulomb interaction with the confined electrons.
Źródło:
Optica Applicata; 2016, 46, 2; 255-263
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Overview of recent results from the WEGA stellarator
Autorzy:
Otte, M.
Laqua, H. P.
Chlechowitz, E.
Marsen, S.
Preinhaelter, J.
Stange, T.
Rodatos, A.
Urban, J.
Zhang, D.
Powiązania:
https://bibliotekanauki.pl/articles/147486.pdf
Data publikacji:
2012
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
magnetic confinement
supra-thermal particles
electron Bernstein waves
Opis:
Repeated magnetic flux surface measurements confirmed the existence of closed and nested flux surfaces, but also revealed the existence of magnetic error fields. The simultaneous application of two radio frequency systems for plasma heating operating at 28 GHz and 2.45 GHz, respectively, allowed to reach otherwise non-accessible plasma regimes in WEGA due to synergetic effects. These regimes are characterized by over-dense plasmas at 0.5 T operation by means of electron Bernstein wave heating and the existence of supra-thermal electrons associated with soft X-ray and gamma-rays. The thermal electron diffusion coefficient was determined in the electron Bernstein wave heated plasma regime. Additionally, results from turbulence studies in low density plasmas in the vicinity of magnetic islands are presented.
Źródło:
Nukleonika; 2012, 57, 2; 171-175
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concentric Vs. Eccentric Loading on Different Shapes of CFST Columns: A Theoretical Investigation on Axial Compressive Strength According to AISC Guidelines
Autorzy:
Rubieyat, Bin Ali
Islam, Md. Mofizul
Powiązania:
https://bibliotekanauki.pl/articles/1177805.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Confinement effect
bearing capacity and axial compressive strength
Opis:
The Steel-concrete composite column can be an effective solution for any type of civil engineering construction instead of bare concrete or bare steel column because of having a good confinement effect between steel and concrete. Four types of shapes (square, rectangular, circular and elliptical) are chosen to find out their bearing capacity and axial compressive strength according to AISC (2010) guidelines. It is tried to make differences between these shapes. And it is also tried to keep the same cross-sectional dimension in the area of each shape. The main features which are found from this investigation are that circular shape has a good confinement effect and cost-effective than other shapes. Though the capacity of the square shape of CFST column is better than circular but it loses its confinement effect because of having sharp edges. And a square type of shape is suitable for easy connection. On the other hand, rectangular shape is better than elliptical shape.
Źródło:
World Scientific News; 2018, 99; 119-132
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High Power Laser Laboratory at the Institute of Plasma Physics and Laser Microfusion : equipment and preliminary research
Autorzy:
Zaraś-Szydłowska, A.
Badziak, J.
Rosiński, M.
Makowski, J.
Parys, P.
Piotrowski, M.
Ryć, L.
Wołowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/146603.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
femtosecond pulses
high-power laser
inertial confinement fusion
laser plasma
Opis:
The purpose of this paper is to present the newly-opened High Power Laser Laboratory (HPLL) at the Institute of Plasma Physics and Laser Microfusion (IPPLM). This article describes the laser, the main laboratory accessories and the diagnostic instruments. We also present preliminary results of the first experiment on ion and X-ray generation from laser-produced plasma that has been already performed at the HPLL.
Źródło:
Nukleonika; 2015, 60, 2; 245-248
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ITO layer as an optical confinement for nitride edge-emitting lasers
Autorzy:
Kuc, M.
Sokół, A. K.
Piskorski, Ł.
Dems, M.
Wasiak, M.
Sarzała, R. P.
Czyszanowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/200863.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
edge-emitting lasers
InGaN/GaN
computer simulation
ITO
optical confinement
Opis:
This paper presents the results of a numerical analysis of nitride-based edge-emitting lasers with an InGaN/GaN active region designed for continuous wave room temperature emission of green and blue light. The main goal was to investigate whether the indium thin oxide (ITO) layer can serve as an effective optical confinement improving operation of these devices. Simulations were performed with the aid of a self-consistent thermal-electrical-optical model. Results obtained for green- and blue-emitting lasers were compared. The ITO layer in the p-type cladding was found to effectively help confine the laser mode in the active regions of the devices and to decrease the threshold current density.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 1; 147-154
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of laser-produced plasmas
Autorzy:
Batani, D.
Morace, A.
Maheut, Y.
Jakubowska, K.
Volpe, L.
Powiązania:
https://bibliotekanauki.pl/articles/146508.pdf
Data publikacji:
2016
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
laser-produced plasmas
inertial-confinement fusion (ICF)
X-ray imaging
VISAR
Opis:
We present the general challenges of plasma diagnostics for laser-produced plasmas and give a few more detailed examples: spherically bent crystals for X-ray imaging, velocity interferometers (VISAR) for shock studies, and proton radiography.
Źródło:
Nukleonika; 2016, 61, 4; 393-401
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
La pandémie comme prétexte pour écrire. Sur la littérature québécoise contaminée
The Pandemic as a Pretext to Write: About the Contaminated Québécois Literature
Autorzy:
Berek, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/28408329.pdf
Data publikacji:
2023-12-16
Wydawca:
Komisja Nauk Filologicznych Oddziału Polskiej Akademii Nauk we Wrocławiu
Tematy:
Québécois literature
lockdown
pandemic and literature
littérature québécoise
confinement
pandémie et littératur
Opis:
The article focuses on today’s Québécois literature and aims to show a range of practices of expression and of literary formes popular thanks to or because of the COVID-19 pandemic. During lockdown, some writers as well as amateurs, felt the urge to write. In reference to the collective «Récits infectés» (Infected stories) and Wajdi Mouawad’s lockdown diary, as well as other initiatives from the beginning of the lockdown, the article also considers the function of writing in the era of the COVID-19 pandemic.
Źródło:
Academic Journal of Modern Philology; 2023, 20; 213-223
2299-7164
2353-3218
Pojawia się w:
Academic Journal of Modern Philology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microarray-core based circular photonic crystal fiber for high chemical sensing capacity with low confinement loss
Autorzy:
Asaduzzaman, S.
Ahmed, K.
Powiązania:
https://bibliotekanauki.pl/articles/174575.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
circular photonic crystal fiber
confinement loss
elliptical core
chemical sensor
relative sensitivity
Opis:
In this article, a circular photonic crystal fiber based chemical sensor has been presented where core region is designed with an array of elliptical holes. The proposed structure is numerically investigated by using a full vectorial finite element method. From the numerical results, it is observed that introducing an array of elliptical holes helps to obtain the high relative sensitivity and realizes a low confinement loss. In addition, the increase in the value of the diameter of holes in the innermost ring enhances the relative sensitivity. Moreover, the increase in the value of the diameter of holes in the outermost ring reduces the confinement loss. In this work, we have considered an industrially valuable chemical ethanol. Simulation results disclose that the highest relative sensitivity of proposed photonic crystal fiber is 29.25% for ethanol and the confinement loss is 7.68 × 10–7 dB/m at the wavelength 1.5 µm.
Źródło:
Optica Applicata; 2017, 47, 1; 41-49
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł

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