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Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
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Tytuł:
Gas-Insulated Self-Breakdown Spark Gaps: Aspects on Low-Scattering and Long-Lifetime Switching
Autorzy:
Frey, W.
Sack, M.
Wuestner, R.
Mueller, G.
Tematy:
52.75.Kq
52.80.Mg
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1807888.pdf  Link otwiera się w nowym oknie
Opis:
The influence of the electric field distribution between the electrodes and the seed electron generation rate on the scattering of the breakdown voltage of $SF_{6}$-insulated spark gaps was investigated. The breakdown voltage scattering considerably can be reduced by applying large-gap-volume, uniform-field electrode profiles instead of spherical shaped electrodes. Moreover, uniform field electrode profiles exhibit an uniform discharge probability in the entire gap volume and following an almost uniform erosion of electrode material along the electrode's surface. This preserves electrode shape and switching performance of the spark gap for a long maintenance-free lifetime. Breakdown voltage scattering further can be reduced by increasing the seed electron generation in the gap by an auxiliary corona discharge adjacent to the main gap. The experimental observations are discussed on the basis of the volume time law for discharge initiation.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Critical Comparison between the Pulsed Electric Field and Thermal Decontamination Methods of Hospital Wastewater
Autorzy:
Gusbeth, C.
Frey, W.
Schwartz, T.
Rieder, A.
Tematy:
87.50.cj
87.14.ej
92.40.kc
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Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1807927.pdf  Link otwiera się w nowym oknie
Opis:
Filtered wastewater samples were inoculated with Enterococcus faecium and exposed to different pulsed electric field (PEF) treatment energies at 40, 50 and 60°C. A lethal effect of heat treatment on E. faecium can be observed for T > 56°C and a heating duration of 4 min. A treatment with 60°C, 4 min, provokes a bacterial reduction of 4 log. A combined treatment of inoculated wastewater samples with pulsed electric field and heat (40, 50 and 60°C) reduced the bacterial contamination considerably. At a suspension temperature of 60°C pulsed electric field inactivation resulted in a complete bacterial decontamination (8 log reduction rate). Moreover, it was demonstrated that naturally occurring nuclease activities were not changed by the pulsed electric field treatment. In contrast to a thermal treatment with temperature over 72°C, for 4 min., the nuclease activity was reduced up to 90%. In this case, inactivation is only 4 log. The same inactivation rate can be obtained by a combination of heat treatment (60°C) and pulsed electric field treatment (30 J/ml).
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Upgrade of the Electroporation Device KEA-MOBIL
Autorzy:
Sack, M.
Attmann, F.
Stängle, R.
Wolf, A.
Frey, W.
Müller, G.
Tematy:
87.50.cj
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:
https://bibliotekanauki.pl/articles/1807923.pdf  Link otwiera się w nowym oknie
Opis:
For the production of synthetic bio-fuel the use of green biomass enables additional resources of raw material supplementary to the commonly used dry material. An electroporation assisted drying process gives the opportunity of a more efficient dewatering than only pressing and subsequent drying. Experiments showed a lower relative humidity of the pressed material after electroporation compared to pressing the raw material only. Moreover, the drying process of the electroporated material was much shorter. This is because the pores formed in the cell membranes foster a better extraction of water during pressing and enhance the diffusion process during the drying process. The paper presents exemplarily the experimental results for green rye. For the electroporation-assisted drying process the electric contact to the plant material has to be established by means of the juice inside the plants only rather than adding additional water. Hence, for experiments in larger scale, the existing electroporation device KEA-MOBIL has been equipped with a new combined electroporation reactor and press. The reactor has a plate electrode system, whose upper electrode additionally serves as a piston to apply mechanical force to extract juice for a good electrical contact between plant material and the electrodes. A two-stage Marx generator serves as a pulse source. To reduce the insulation distance to the walls of the shielding cabin the Marx generator is operated in ground symmetric configuration. The device has been designed for a batch-wise throughput of 50 kg/h. An automatic feeding device enables the alternating use of two test vessels. The device has been tested on-site on a farm with green rye and grass.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Readout System and Data Processing for OCT Pachymetry
Autorzy:
Dziewiecki, M.
Domański, G.
Frey, W.
Konarzewski, B.
Kurjata, R.
Marzec, J.
Smolnik, A.
Zaremba, K.
Ziembicki, M.
Tematy:
optical coherence tomography
pachymetry
optical signal detection
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/226782.pdf  Link otwiera się w nowym oknie
Opis:
A complete system for measurement control, signal acquisition and data processing for an OCT pachymeter is described. Moreover, dedicated data processing algorithm used for noise reduction is presented. A simple OCT scanner was built and some measurements were performed to examine the capabilities of the system.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single scattering albedo of fine mineral dust aerosols controlled by iron concentration
Autorzy:
Arnott, W. Patrick
Engelbrecht, Johann P.
Skiba, Michał
Frey, Garrett
Moosmüller, Hans
Chakrabarty, Rajan K.
Opis:
Sign and magnitude of solar aerosol direct radiative forcing are largely determined by the aerosol single scattering albedo ( SSA ) and the albedo of the underlying scene (e.g., surface albedo). On a global scale, mineral dust aerosol has the largest mass emission rate, average column mass burden, and average optical depth of all aerosol types. Therefore, better understanding of its optical properties with a focus on SSA is of great importance. Here, we entrain ten bulk soil samples from deserts and semi-arid regions in the Arabian Peninsula, from locations representative of the Sahara and Sahel in North Africa, and from Northeast Africa and South-Central Asia. We segregate the fine particle fraction (aerodynamic diameter < 2.5 m m) and measure its iron content with an x-ray fluorescence (XRF) spectrometer and its aerosol SSA and absorption, scattering, and extinction Ångström coefficients for two wavelengths (405 nm and 870 nm) with a photoacoustic instrument with integrating reciprocal nephelometer. Results show that SSA is much lower at 405 nm than at 870 nm and that SSA at both wavelengths is dominated by and linearly correlated with the iron content of the entrained mineral dust. The second result points toward potential use of SSA remote sensing to measure aerosol iron content and vice versa, measurements of iron content with simple filter sampling followed by XRF analysis, providing an assessment of SSA for aerosol radiative forcing calculations and modeling. Average Ångström coefficients were ≈ 3.2 for absorption, ≈ 0.4 for scattering, and ≈ 0.3 for extinction and showed little correlation with iron content.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Growth and characterisation of LWIR T2SL on (100)-, (211)- and (311)-oriented GaSb substrates
Autorzy:
Lubyshev, Dmitri
Fastenau, Joel M.
Kattner, Michael
Frey, Philip
Nelson, Scott A.
Flick, Ryan
Wu, Ying
Liu, Amy W. K.
Szymanski, Dennis E.
Martinez, Becky
Furlong, Mark J.
Dennis, Richard
Bundas, Jason
Sundaram, Mani
Tematy:
focal plane arrays
InAs/InAsSb
photodetectors
long wavelength infrared type-II superlattice
metamorphic buffers
superlattice period reduction
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Powiązania:
https://bibliotekanauki.pl/articles/2204213.pdf  Link otwiera się w nowym oknie
Opis:
Ga-free InAs/InAsSb type-II superlattice structures grown on GaSb substrates have demonstrated high performance for mid-wave infrared applications. However, realisation of long wavelength infrared photodetectors based on this material system still presents challenges, especially in terms of reduced quantum efficiency. This reduction is due, in part, to the increased type-II superlattice period required to attain longer wavelengths, as thicker periods decrease the wave-function overlap for the spatially separated quantum wells. One way to improve long wavelength infrared performance is to modify the type-II superlattice designs with a shorter superlattice period for a given wavelength, thereby increasing the wave-function overlap and the resulting optical absorption. Long wavelength infrared epitaxial structures with reduced periods have been realised by shifting the lattice constant of the type-II superlattice from GaSb to AlSb. Alternatively, epitaxial growth on substrates with orientations different than the traditional (100) surface presents another way for superlattice period reduction. In this work, the authors evaluate the performance of long wavelength infrared type-II superlattice detectors grown by molecular beam epitaxy using two different approaches to reduce the superlattice period: first, a metamorphic buffer to target the AlSb lattice parameter, and second, structures lattices matched to GaSb using substrates with different orientations. The use of the metamorphic buffer enabled a ~30% reduction in the superlattice period compared to reference baseline structures, maintaining a high quantum efficiency, but with the elevated dark current related to defects generated in the metamorphic buffer. Red-shift in a cut-off wavelength obtained from growths on highindex substrates offers a potential path to improve the infrared photodetector characteristics. Focal plane arrays were fabricated on (100), (311)A- and (211)B-oriented structures to compare the performance of each approach.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dijet angular distributions in direct and resolved photoproduction at HERA
Autorzy:
Westphal, D.
Behrens, U.
Zachara, M.
Walczak, R.
Devenish, R.C.E.
Bauerdick, L.A.T.
Ayad, R.
Umemori, K.
Hain, W.
Solano, A.
Jakob, H.-P.
Engelen, J.
Schneekloth, U.
Kisielewska, D.
Piccioni, D.
Matsushita, T.
George, S.
Murray, W.N.
Nowak, R.J.
Gallo, E.
Monteiro, T.
Mańczak, O.
Tsurugai, T.
Hung, B.H.Y.
Borzemski, P.
Tapper, R.J.
Park, S.K.
Schmidke, W.B.
Palmonari, F.
Terron, J.
Zacek, G.
Cirio, R.
Lukina, O.Yu.
Hochman, D.
Heinz, L.
Hagge, L.
An, S.H.
Corriveau, F.
Nakao, M.
Boscherini, D.
Cashmore, R.J.
Eskreys, A.
Brook, N.H.
Amelung, C.
Kotański, Andrzej
Beier, H.
Yoshida, R.
Grothe, M.
Feild, R.G.
Hervás, L.
Tiecke, H.
Seifert, R.J.
Zaja̧c, J.
Roff, D.G.
Patel, P.M.
Gladilin, L.K.
Acosta, D.
Dubbs, T.
Karshon, U.
Wai, L.
van Sighem, A.
Bamberger, A.
Zawiejski, L.
Oh, B.Y.
Sciulli, F.
Kooijman, P.
Youngman, C.
Ling, T.Y.
Cooper-Sarkar, A.M.
Schwarzer, O.
Foster, B.
Stanek, R.
Derrick, M.
Bari, G.
Tymieniecka, T.
Limentani, S.
Lüke, D.
Uijterwaal, H.
Glasman, C.
Fagerstroem, C.-P.
de Wolf, E.
Homma, K.
Heusch, C.
Sartorelli, G.
Geerts, M.
Marini, G.
Nath, C.
Tickner, J.R.
Feld, L.
Filges, D.
Zuin, F.
Stairs, D.G.
Labarga, L.
Shah, T.P.
Große-Knetter, J.
Wick, K.
Ciborowski, J.
Iannotti, L.
Kruse, A.
Eisenhardt, S.
Verkerke, W.
Rohde, M.
Chiba, M.
Wróblewski, A.K.
McNeil, R.R.
De Pasquale, S.
Dardo, M.
Wölfle, S.
de Trocóniz, J.F.
Mengel, S.
Dasu, S.
Grabosch, H.J.
Peroni, C.
Reeder, D.D.
Ladage, A.
Maselli, S.
Hasell, D.
Klanner, R.
Straub, P.B.
Meyer, A.
Posocco, M.
Vaiciulis, A.
Li, C.
Zer-Zion, D.
Burow, B.D.
Bornheim, A.
Utley, M.L.
Williams, D.C.
Biltzinger, J.
Silverstein, S.
Orr, R.S.
Wolf, G.
Roco, M.
Inuzuka, M.
Dosselli, U.
Crittenden, J.
Howell, G.
Lamberti, L.
McFall, J.D.
Ullmann, R.
Abramowicz, H.
Piotrzkowski, K.
Bulmahn, J.
Shcheglova, L.M.
Parsons, J.A.
Poelz, G.
McCubbin, N.A.
Kasprzak, M.
Talaga, R.L.
Solomin, A.N.
Eckert, M.
Hilger, E.
Contin, A.
Cartiglia, N.
Castellini, G.
Zeuner, W.
Lohrmann, E.
Walenta, A.H.
Butterworth, I.
Hanna, D.S.
Bogusz, W.
Gajewski, J.
Loveless, R.J.
Suszycki, L.
Schlenstedt, S.
D'Agostini, G.
Nam, S.W.
Bednarek, B.
Gilmore, J.
Ermolov, P.F.
Benard, F.
Vreeswijk, M.
Romanowski, T.A.
Harnew, N.
Levi, G.
Bertolin, A.
Iacobucci, G.
Koch, W.
Basile, M.
Milewski, J.
Trefzger, T.
Noyes, V.A.
Laurenti, G.
Waters, D.S.
Carlin, R.
Ritz, S.
Sinclair, L.E.
Hartmann, H.
St-Laurent, M.
Coldewey, C.
Schott, W.
Sinkus, R.
Campbell-Robson, S.
Votano, L.
Wiggers, L.
Costa, M.
Zhu, Q.
Löwe, M.
Repond, J.
Wilson, A.S.
Smith, W.H.
Bhadra, S.
Krzyżanowski, M.
Nadendla, V.K.
Voß, T.
Levman, G.M.
Margotti, A.
Lancaster, M.
Catterall, C.D.
Haas, T.
Park, H.S.
Vossebeld, J.
Kharchilava, A.
Pfeiffer, M.
Yip, T.
Cases, G.
Pavel, N.
Frey, A.
Pelfer, P.
Jones, T.W.
Musgrave, B.
Doyle, A.T.
Przybycień, M.
Lane, J.B.
Fernandez, J.P.
Golubkov, Yu.A.
Mattingly, M.C.K.
Chlebana, F.
Hartner, G.F.
Sacchi, R.
Lee, S.B.
Giusti, P.
Breitweg, J.
Jeleń, K.
Butterworth, J.M.
Schulz, W.
Bacon, T.C.
Schioppa, M.
Dannemann, A.
Barreiro, F.
Saxon, D.H.
Eisenberg, Y.
del Peso, J.
Bruni, A.
Kötz, U.
Wodarczyk, M.
Schramm, D.
Dolgoshein, B.A.
Quadt, A.
Bromley, J.T.
Göttlicher, P.
Wilson, F.F.
Nylander, P.
Revel, D.
Mattingly, S.
Dal Corso, F.
Mikunas, D.
Prinias, A.
Iga, Y.
Wang, M.Z.
Badgett, W.F.
Sutton, M.R.
Löhr, B.
Puga, J.
Gialas, I.
Harris, V.L.
Heßling, H.
Zotov, N.P.
Adamczyk, L.
Lindemann, L.
Notz, D.
Doeker, T.
Kaziewicz, P.B.
Przybycień, M.B.
Wedemeyer, R.
Frisken, W.R.
Bruni, G.
Cindolo, F.
Hart, J.C.
Susinno, G.
Barberis, E.
Hayes, M.E.
Martin, J.F.
Simmons, D.
Chapin, D.
Zhang, H.
Magill, S.
Whitmore, J.J.
Staino, A.
Cassidy, A.
Ferrero, M.I.
Ng, J.S.T.
Voci, C.
Van Hook, M.
Heath, H.F.
Deppe, O.
Flasiński, M.
Wulff, N.
Jing, Z.
Barbagli, G.
Żarnecki, A.F.
Yamauchi, K.
Metcalf, W.
Stroili, R.
Matthews, C.G.
Bylsma, B.
Katz, U.F.
Wang, S.M.
Heinloth, K.
Kartik, S.
Stifutkin, A.
Yang, S.
Holm, U.
Horstmann, D.
Proskuryakov, A.S.
Lockman, W.
Cifarelli, L.
Cardy, M.L.
Arneodo, M.
Fleck, J.I.
Brkic, M.
Rahn, J.T.
Hernández, J.M.
Bienlein, J.K.
Hirose, T.
Whitfield, A.F.
Botje, M.
Kim, H.-J.
Khakzad, M.
Roldán, J.
Wu, J.T.
Joo, K.K.
Johnson, K.F.
Levy, A.
Mo, L.W.
Caldwell, A.
Zakrzewski, J.A.
Mainusch, J.
Muchorowski, K.
Zichichi, A.
Jakubowski, Z.
Cloth, P.
Polini, A.
Polenz, S.
Graciani, R.
Yamazaki, Y.
Bruni, P.
Foudas, C.
Massam, T.
Park, I.H.
Mari, S.M.
Kitamura, S.
Ko, B.J.
Hartmann, J.
Ohrenberg, K.
Garfagnini, A.
Briskin, G.
Nania, R.
Deffner, R.
Okrasinski, J.R.
ishii, T.
Kuzmin, V.A.
Long, K.R.
Bailey, D.C.
Cross, R.
Maccarrone, G.
Dagan, S.
Heath, G.P.
Hamatsu, R.
Brümmer, N.
Labs, J.
Bussey, P.J.
Lu, B.
Sedgbeer, J.K.
Brugnera, R.
Bashkirov, V.
Nigro, A.
Hung, L.W.
Cottingham, W.N.
de Kamps, M.
Corradi, M.
Riveline, M.
Krakauer, D.
Rembser, Ch.
Kasemann, M.
Bellagamba, L.
Stanco, L.
Miller, D.B.
Martinez, M.
Bashindzhagyan, G.L.
Duliński, Zbigniew
Durkin, L.S.
Zamora Garcia, Y.
Tassi, E.
Zech, G.
Pawlak, J.M.
Teuscher, R.J.
Suzuki, I.
Tokushuku, K.
Gilkinson, D.J.
Wollmer, U.
Surrow, B.
van Woudenberg, R.
Kuze, M.
Paul, E.
Dyce, N.
Bailey, D.S.
Stamm, J.
Lim, J.N.
Sideris, D.
Cara Romeo, G.
Grzelak, G.
Selonke, F.
Kowalski, T.
Yamada, S.
Liu, W.
Desler, K.
De Giorgi, M.
Sampson, C.R.
Kowalski, H.
Mine, S.
Capua, M.
Cho, G.H.
Chwastowski, J.
Seiden, A.
Rulikowska-Zarȩbska, E.
Korzhavina, I.A.
Sadrozinski, H.F.-W.
Kobrin, V.D.
Zetsche, F.
Mallik, U.
Joos, P.
Adamus, M.
Savin, A.A.
Saunders, R.L.
Abbiendi, G.
Drews, G.
Shulman, J.
Morandin, M.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 20

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