9 results on '"Wuestner, R."'
Search Results
2. Holistic exploitation of pulsed electric field (PEF)-treated and lipid extracted microalgae Auxenochlorella protothecoides, utilizing anaerobic digestion (AD)
- Author
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Straessner, R., Nikolausz, Marcell, Silve, A., Nazarova, N., Wuestner, R., Papachristou, I., Akaberi, S., Leber, K., Mueller, G., Frey, W., Straessner, R., Nikolausz, Marcell, Silve, A., Nazarova, N., Wuestner, R., Papachristou, I., Akaberi, S., Leber, K., Mueller, G., and Frey, W.
- Abstract
This study proposes a cascade processing of the lipid-rich microalgae Auxenochlorella protothecoides. Freshly harvested biomass is pre-concentrated to 100 g/kgsusp and then pretreated using pulsed electric fields (PEF). PEF-treatment, which affects permeability of cells membrane, induces a spontaneous release of microalgal ingredients into the surrounding medium, mostly carbohydrates and micronutrients, which can be recovered. After separation of this aqueous fraction, lipid extraction is performed on the remaining wet pellet using an ethanol-hexane blend. After recovery of those different valuables, it was considered, to convert the rest biomass (cell envelope and most of the other remaining hard- or non-extractable components), to storable energy. Anaerobic digestion (AD) of the remains to biogas was considered to be a promising solution. AD-processes have the charm that unprocessed wet microalgal biomass, as well as wet organic biomass residues from previous extraction steps can be utilized directly without further purification or drying steps. The obtained biogas can then be upgraded to methane for an energetic use.PEF-treated algal biomass showed a 10 % increased methane outcome (467 mLnorm/gVS) compared to the untreated sample. PEF-treated microalgae, subjected to extraction of the aqueous fraction, demonstrated a 23 % increase in methane yield (558 mLnorm/gVS), compared to control. Finally, the biomass, PEF-treated and subjected to extraction of water fraction and lipids, still achieved 41 % of methane potential (205 mLnorm/gVS) during the AD process, compared to the untreated control.Our study demonstrates the feasibility of cascade processing using PEF-treatment. Moreover, all the study was developed keeping in mind industrial requirements. In particular, our downstream approach did not require any drying, the pretreatment required low amount of energy, i.e. 1.5 MJ/kgCDW and the majorit
- Published
- 2022
3. Hypotonic osmotic shock treatment to enhance lipid and protein recoveries from concentrated saltwater Nannochloropsis slurries
- Author
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Halim, R, Papachristou, I, Kubisch, C, Nazarova, N, Wuestner, R, Steinbach, D, Chen, GQ, Deng, H, Frey, W, Posten, C, Silve, A, Halim, R, Papachristou, I, Kubisch, C, Nazarova, N, Wuestner, R, Steinbach, D, Chen, GQ, Deng, H, Frey, W, Posten, C, and Silve, A
- Published
- 2021
4. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY
- Author
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ADLARSON, R, COLLABORATION, WAC, AUGUSTYNIAK, W, BARDAN, W, BASHKANOV, M, BERGMANN, FS, BERLOWSKI, M, BONDAR, A, BUESCHER, M, CALEN, H, CIEPAL, I, CLEMENT, H, CZERWINSKI, E, DEMMICH, K, ENGELS, R, ERVEN, A, ERVEN, W, EYRICH, W, FEDORETS, R, FOEHL, K, FRANSSON, K, GOLDENBAUM, F, GOSWAMI, A, GRIGORYEV, K, GULLSTROM, CO, HEIJKENSKJOLD, L, HEJNY, V, HUESKEN, N, JARCZYK, L, JOHANSSON, T, KAMYS, B, KEMMERLING, G, KHATRI, G, KHOUKAZ, A, KHREPTAK, A, KIRILLOV, DA, KISTRYN, S, KLEINES, H, KLOS, B, KRZEMIEN, W, KULESSA, R, KUPSC, A, KUZMIN, A, LALWANI, K, LERSCH, D, LORENTZ, B, MAGIERA, A, MAIER, R, MARCINIEWSKI, R, MARIANSKI, B, MORSCH, HP, MOSKAL, R, OHM, H, PAROL, W, RIO, EP, PISKUNOV, NM, PRASUHN, D, PSZCZEL, D, PYSZ, K, PYSZNIAK, A, RITMAN, J, ROY, A, RUDY, Z, RUNDEL, O, SAWANT, S, SCHADMAND, S, SCHATTI-OZERIANSKA, I, SEFZICK, T, SERDYUK, V, SHWARTZ, B, SITTERBERG, K, SKORODKO, T, SKURZOK, M, SMYRSKI, J, SOPOV, V, STASSEN, R, STEPANIAK, J, STEPHAN, E, STERZENBACH, G, STOCKHORST, H, STROEHER, H, SZCZUREK, A, TRZCINSKI, A, WOLKE, M, WRONSKA, A, WUESTNER, R, YAMAMOTO, A, ZABIEROWSKI, J, ZIELINSKI, MJ, ZLOMANCZUK, J, ZUPRANSKI, R, ZUREK, M, and WIRZBA, A
- Subjects
CONSERVING DECAY ,UPPER LIMIT - Abstract
We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively. (c) 2018 The Author. Published by Elsevier B.V.
- Published
- 2018
- Full Text
- View/download PDF
5. Search for C violation in the decay eta -> pi(0)e(+)e(-) with WASA-at-COSY
- Author
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Adlarson, Patrik, Collaboration, WASA-at-COSY, Augustyniak, W., Bardan, W., Bashkanov, M., Bergmann, F. S., Berlowski, M., Bondar, A., Buescher, M., Calén, Hans, Ciepal, I., Clement, H., Czerwinski, E., Demmich, K., Engels, R., Erven, A., Erven, W., Eyrich, W., Fedorets, R., Foehl, K., Fransson, Kjell, Goldenbaum, F., Goswami, A., Grigoryev, K., Gullström, Carl-Oskar, Heijkenskjöld, Lena, Hejny, V., Huesken, N., Jarczyk, L., Johansson, Tord, Kamys, B., Kemmerling, G., Khatri, G., Khoukaz, A., Khreptak, A., Kirillov, D. A., Kistryn, S., Kleines, H., Klos, B., Krzemien, W., Kulessa, R., Kupsc, Andrzej, Kuzmin, A., Lalwani, K., Lersch, D., Lorentz, B., Magiera, A., Maier, R., Marciniewski, Pawel, Marianski, B., Morsch, H. -P, Moskal, R., Ohm, H., Parol, W., del Rio, E. Perez, Piskunov, N. M., Prasuhn, D., Pszczel, Damian, Pysz, K., Pyszniak, Andzej, Ritman, J., Roy, A., Rudy, Z., Rundel, O., Sawant, S., Schadmand, S., Schatti-Ozerianska, I., Sefzick, T., Serdyuk, V., Shwartz, B., Sitterberg, K., Skorodko, T., Skurzok, M., Smyrski, J., Sopov, V., Stassen, R., Stepaniak, J., Stephan, E., Sterzenbach, G., Stockhorst, H., Stroeher, H., Szczurek, A., Trzcinski, A., Wolke, Magnus, Wronska, A., Wuestner, R., Yamamoto, A., Zabierowski, J., Zielinski, M. J., Zlomanczuk, Jozef, Zupranski, R., Zurek, M., and Wirzba, A.
- Subjects
Subatomär fysik ,Astronomi, astrofysik och kosmologi ,Subatomic Physics ,Astronomy, Astrophysics and Cosmology - Abstract
We report on the search for the rare decay eta -> pi(0)e(+)e(-) which is of interest to study C violation in the electromagnetic interaction which would indicate contributions from physics beyond the Standard Model, since the allowed decay via a two-photon intermediate state is strongly suppressed. The experiment has been performed using the WASA-at-COSY installation, located at the COSY accelerator of the Forschungszentrum Julich, Germany. In total 3 x 10(7) events of the reaction pd -> He-3 eta have been recorded at an excess energy of Q = 59.8MeV. Based on this data set the C parity violating decay eta -> pi(0)gamma* -> pi(0)e(+)e(-) via a single-photon intermediate state has been searched for, resulting in new upper limits of Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> pi(+) pi(-) pi(0)) < 3.28 x 10(-5) and Gamma(eta -> pi(0)e(+) e(-))/Gamma(eta -> all)< 7.5 x 10(-6) (CL=90%), respectively.
- Published
- 2018
6. Monitoring of inactivation efficiencies and regeneration potential of antibiotic resistant E. faecium during pulsed electric field treatment of wastewater
- Author
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Brändle, M., Gusbeth, C., Wuestner, R., Obst, U., Frey, W., and Schwartz, T.
- Subjects
ddc:500 ,NATURAL sciences & mathematics - Published
- 2010
7. Measurement of the eta -> 3 pi(0) Dalitz plot distribution with the WASA detector at COSY
- Author
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Adolph, C, Angelstein, M, Bashkanov, M, Bechstedt, U, Belostotski, S, Berlowski, M, Bhatt, H, Bisplinghoff, J, Bondar, A, Borasoy, B, Buescher, M, Calèn, H, Chandwani, K, Clement, H, Czerwinski, E, Czyzykiewicz, R, D'Orsaneo, G, Duniec, D, Ekström, C, Engels, R, Erven, W, Eyrich, W, Fedorets, P, Felden, O, Fransson, K, Gil, D, Goldenbaum, F, Grigoryev, K, Heczko, A, Hanhart, C, Hejny, V, Hinterberger, F, Hodana, M, Hoeistad, B, Izotov, A, Jacewicz, M, Janusz, M, Jany, R, Jarczyk, L, Johansson, T, Kamys, B, Kemmerling, G, Keshelashvili, I, Khakimova, O, Khoukaz, A, Kilian, K, Kimura, N, Kistryn, S, Klaja, J, Klaja, P, Kleines, H, Klos, B, Kowalczyk, A, Kren, F, Krzemien, W, Kulessa, P, Kullander, S, Kupsc, A, Kuzmin, A, Kyryanchuk, V, Majewski, J, Machner, H, Magiera, A, Maier, R, Marciniewski, R, Migdal, W, Meissner, U.-G., Mikirtychiants, M, Miklukho, O, Milke, N, Mittag, M, Moskal, P, Nandi, K, Nawrot, A, Nissler, R, Odoyo, A, Oelert, W, Ohm, H, Paul, N, Pauly, C, Petukhov, Y, Piskunov, N, Plucinski, P, Podkopal, P, Povtoreyko, A, Prasuhn, D, Pricking, A, Pysz, K, Rachowski, J, Rausmann, T, Redmer, F, Ritman, J, Roy, A, Ruber, R. J. M. Y, Rudy, Z, Salmin, R, Schadmand, S, Schmidt, A, Schneider, H, Schroeder, W, Scobel, W, Sefzick, T, Serdyuk, V, Shah, N, Siemaszko, M, Siudak, R, Skorodko, T, Smolinski, T, Smyrski, J, Sopov, V, Spoelgen, D, Stepaniak, J, Sterzenbach, G, Stroeher, H, Szczurek, A, Teufel, A, Tolba, T, Trzcinski, A, Ulbrich, K, Varma, R, Vlasov, P, Weglorz, W, Winnemoeller, A, Wirzba, A, Wolke, M, Wronska, A, Wuestner, R, Xu, H, Yamamoto, A, Yamaoka, H, Yuan, X, Yurev, L, Zabierowski, J, Zheng, C, Zielinski, J, Zipper, W, Zlomanczuk, J, Zwoll, K, Zychor, I, Adolph, C, Angelstein, M, Bashkanov, M, Bechstedt, U, Belostotski, S, Berlowski, M, Bhatt, H, Bisplinghoff, J, Bondar, A, Borasoy, B, Buescher, M, Calèn, H, Chandwani, K, Clement, H, Czerwinski, E, Czyzykiewicz, R, D'Orsaneo, G, Duniec, D, Ekström, C, Engels, R, Erven, W, Eyrich, W, Fedorets, P, Felden, O, Fransson, K, Gil, D, Goldenbaum, F, Grigoryev, K, Heczko, A, Hanhart, C, Hejny, V, Hinterberger, F, Hodana, M, Hoeistad, B, Izotov, A, Jacewicz, M, Janusz, M, Jany, R, Jarczyk, L, Johansson, T, Kamys, B, Kemmerling, G, Keshelashvili, I, Khakimova, O, Khoukaz, A, Kilian, K, Kimura, N, Kistryn, S, Klaja, J, Klaja, P, Kleines, H, Klos, B, Kowalczyk, A, Kren, F, Krzemien, W, Kulessa, P, Kullander, S, Kupsc, A, Kuzmin, A, Kyryanchuk, V, Majewski, J, Machner, H, Magiera, A, Maier, R, Marciniewski, R, Migdal, W, Meissner, U.-G., Mikirtychiants, M, Miklukho, O, Milke, N, Mittag, M, Moskal, P, Nandi, K, Nawrot, A, Nissler, R, Odoyo, A, Oelert, W, Ohm, H, Paul, N, Pauly, C, Petukhov, Y, Piskunov, N, Plucinski, P, Podkopal, P, Povtoreyko, A, Prasuhn, D, Pricking, A, Pysz, K, Rachowski, J, Rausmann, T, Redmer, F, Ritman, J, Roy, A, Ruber, R. J. M. Y, Rudy, Z, Salmin, R, Schadmand, S, Schmidt, A, Schneider, H, Schroeder, W, Scobel, W, Sefzick, T, Serdyuk, V, Shah, N, Siemaszko, M, Siudak, R, Skorodko, T, Smolinski, T, Smyrski, J, Sopov, V, Spoelgen, D, Stepaniak, J, Sterzenbach, G, Stroeher, H, Szczurek, A, Teufel, A, Tolba, T, Trzcinski, A, Ulbrich, K, Varma, R, Vlasov, P, Weglorz, W, Winnemoeller, A, Wirzba, A, Wolke, M, Wronska, A, Wuestner, R, Xu, H, Yamamoto, A, Yamaoka, H, Yuan, X, Yurev, L, Zabierowski, J, Zheng, C, Zielinski, J, Zipper, W, Zlomanczuk, J, Zwoll, K, and Zychor, I
- Abstract
In the first production run of the WASA experiment at COSY, the eta decay into three neutral pions was measured in proton-proton interactions at a proton beam kinetic energy of 1.4 GeV. The Dalitz plot of the three pious was Studied using 1.2 x 10(5) fully reconstructed events. and the quadratic slope parameter alpha was determined to be -0.027 +/- 0.008(stat) +/- 0.005(syst). The result is consistent with previous measurements and further corroborates the importance of pion-pion final state interactions. (C) 2009 Elsevier B.V. All rights reserved.
- Published
- 2009
- Full Text
- View/download PDF
8. Gas-Insulated Self-Breakdown Spark Gaps: Aspects on Low-Scattering and Long-Lifetime Switching
- Author
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Frey, W., primary, Sack, M., additional, Wuestner, R., additional, and Mueller, G., additional
- Published
- 2009
- Full Text
- View/download PDF
9. Inactivation of microorganisms by pulsed electric field treatment: the influence of pulse parameters on the inactivation rate
- Author
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Frey, W., primary, Gusbeth, C., additional, Schwartz, T., additional, Volkmann, H., additional, Kirchen, S., additional, Wuestner, R., additional, Straessner, R., additional, and Bluhm, H., additional
- Published
- 2006
- Full Text
- View/download PDF
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