TY  - JOUR
A1  - Edgecock, T. R.
A1  - Caretta, O.
A1  - Davenne, T.
A1  - Densam, C.
A1  - Fitton, M.
A1  - Kelliher, D.
A1  - Loveridge, P.
A1  - Machida, S.
A1  - Prior, C.
A1  - Rogers, C.
A1  - Rooney, M.
A1  - Thomason, J.
A1  - Wilcox, D.
A1  - Wildner, E.
A1  - Efthymiopoulos, I.
A1  - Garoby, R.
A1  - Gilardoni, S.
A1  - Hansen, C.
A1  - Benedetto, E.
A1  - Jensen, E.
A1  - Kosmicki, A.
A1  - Martini, M.
A1  - Osborne, J.
A1  - Prior, G.
A1  - Stora, T.
A1  - Melo Mendonca, T.
A1  - Vlachoudis, V.
A1  - Waaijer, C.
A1  - Cupial, P.
A1  - Chancé, A.
A1  - Longhin, A.
A1  - Payet, J.
A1  - Zito, M.
A1  - Baussan, E.
A1  - Bobeth, C.
A1  - Bouquerel, E.
A1  - Dracos, M.
A1  - Gaudiot, G.
A1  - Lepers, B.
A1  - Osswald, F.
A1  - Poussot, P.
A1  - Vassilopoulos, N.
A1  - Wurtz, J.
A1  - Zeter, V.
A1  - Bielski, J.
A1  - Kozien, M.
A1  - Lacny, L.
A1  - Skoczen, B.
A1  - Szybinski, B.
A1  - Ustrycka, A.
A1  - Wroblewski, A.
A1  - Marie-Jeanne, M.
A1  - Balint, P.
A1  - Fourel, C.
A1  - Giraud, J.
A1  - Jacob, J.
A1  - Lamy, T.
A1  - Latrasse, L.
A1  - Sortais, P.
A1  - Thuillier, T.
A1  - Mitrofanov, S.
A1  - Loiselet, M.
A1  - Keutgen, Th.
A1  - Delbar, Th.
A1  - Debray, F.
A1  - Trophine, C.
A1  - Veys, S.
A1  - Daversin, C.
A1  - Zorin, V.
A1  - Izotov, I.
A1  - Skalyga, V.
A1  - Burt, G.
A1  - Dexter, A. C.
A1  - Kravchuk, V. L.
A1  - Marchi, T.
A1  - Cinausero, M.
A1  - Gramegna, F.
A1  - De Angelis, G.
A1  - Prete, G.
A1  - Collazuol, G.
A1  - Laveder, M.
A1  - Mazzocco, M.
A1  - Mezzetto, M.
A1  - Signorini, C.
A1  - Vardaci, E.
A1  - Di Nitto, A.
A1  - Brondi, A.
A1  - La Rana, G.
A1  - Migliozzi, P.
A1  - Moro, R.
A1  - Palladino, V.
A1  - Gelli, N.
A1  - Berkovits, D.
A1  - Hass, M.
A1  - Hirsh, T. Y.
A1  - Schuhmann, M.
A1  - Stahl, A.
A1  - Wehner, J.
A1  - Bross, A.
A1  - Kopp, J.
A1  - Neuffer, D.
A1  - Wands, R.
A1  - Bayes, R.
A1  - Laing, A.
A1  - Soler, P.
A1  - Agarwalla, S. K.
A1  - Cervera Villanueva, A.
A1  - Donini, A.
A1  - Ghosh, T.
A1  - Gómez Cadenas, J. J.
A1  - Hernández, P.
A1  - Martín-Albo, J.
A1  - Mena, O.
A1  - Burguet-Castell, J.
A1  - Agostino, L.
A1  - Buizza-Avanzini, M.
A1  - Marafini, M.
A1  - Patzak, T.
A1  - Tonazzo, A.
A1  - Duchesneau, D.
A1  - Mosca, L.
A1  - Bogomilov, M.
A1  - Karadzhov, Y.
A1  - Matev, R.
A1  - Tsenov, R.
A1  - Akhmedov, E.
A1  - Blennow, M.
A1  - Lindner, M.
A1  - Schwetz, T.
A1  - Fernández Martinez, E.
A1  - Maltoni, M.
A1  - Menéndez, J.
A1  - Giunti, C.
A1  - González García, M. C.
A1  - Salvado, J.
A1  - Coloma, P.
A1  - Huber, P.
A1  - Li, T.
A1  - López Pavón, J.
A1  - Orme, C.
A1  - Pascoli, S.
A1  - Meloni, D.
A1  - Tang, J.
A1  - Winter, W.
A1  - Ohlsson, T.
A1  - Zhang, H.
A1  - Scotto-Lavina, L.
A1  - Terranova, F.
A1  - Bonesini, M.
A1  - Tortora, L.
A1  - Alekou, A.
A1  - Aslaninejad, M.
A1  - Bontoiu, C.
A1  - Kurup, A.
A1  - Jenner, L. J.
A1  - Long, K.
A1  - Pasternak, J.
A1  - Pozimski, J.
A1  - Back, J. J.
A1  - Harrison, P.
A1  - Beard, K.
A1  - Bogacz, A.
A1  - Berg, J. S.
A1  - Stratakis, D.
A1  - Witte, H.
A1  - Snopok, P.
A1  - Bliss, N.
A1  - Cordwell, M.
A1  - Moss, A.
A1  - Pattalwar, S.
A1  - Apollonio, M.
T1  - High intensity neutrino oscillation facilities in Europe
JF  - Physical Review Special Topics-Accelerators and Beams
N2  - The EUROnu project has studied three possible options for future, high intensity neutrino oscillation facilities in Europe. The first is a Super Beam, in which the neutrinos come from the decay of pions created by bombarding targets with a 4 MW proton beam from the CERN High Power Superconducting Proton Linac. The far detector for this facility is the 500 kt MEMPHYS water Cherenkov, located in the Frejus tunnel. The second facility is the Neutrino Factory, in which the neutrinos come from the decay of mu(+) and mu(-) beams in a storage ring. The far detector in this case is a 100 kt magnetized iron neutrino detector at a baseline of 2000 km. The third option is a Beta Beam, in which the neutrinos come from the decay of beta emitting isotopes, in particular He-6 and Ne-18, also stored in a ring. The far detector is also the MEMPHYS detector in the Frejus tunnel. EUROnu has undertaken conceptual designs of these facilities and studied the performance of the detectors. Based on this, it has determined the physics reach of each facility, in particular for the measurement of CP violation in the lepton sector, and estimated the cost of construction. These have demonstrated that the best facility to build is the Neutrino Factory. However, if a powerful proton driver is constructed for another purpose or if the MEMPHYS detector is built for astroparticle physics, the Super Beam also becomes very attractive.
KW  - EMMA
KW  - beta-beam
Y1  - 2013
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-126611
VL  - 16
IS  - 2
ER  - 
TY  - JOUR
A1  - Schade, A.
A1  - Bader, A.
A1  - Huber, T.
A1  - Kuhn, S.
A1  - Czyszanowski, T.
A1  - Pfenning, A.
A1  - Rygała, M.
A1  - Smołka, T.
A1  - Motyka, M.
A1  - Sęk, G.
A1  - Hartmann, F.
A1  - Höfling, S.
T1  - Monolithic high contrast grating on GaSb/AlAsSb based epitaxial structures for mid-infrared wavelength applications
JF  - Optics Express
N2  - We demonstrate monolithic high contrast gratings (MHCG) based on GaSb/AlAs0.08Sb0.92 epitaxial structures with sub-wavelength gratings enabling high reflection of unpolarized mid-infrared radiation at the wavelength range from 2.5 to 5 µm. We study the reflectivity wavelength dependence of MHCGs with ridge widths ranging from 220 to 984 nm and fixed 2.6 µm grating period and demonstrate that peak reflectivity of above 0.7 can be shifted from 3.0 to 4.3 µm for ridge widths from 220 to 984 nm, respectively. Maximum reflectivity of up to 0.9 at 4 µm can be achieved. The experiments are in good agreement with numerical simulations, confirming high process flexibility in terms of peak reflectivity and wavelength selection. MHCGs have hitherto been regarded as mirrors enabling high reflection of selected light polarization. With this work, we show that thoughtfully designed MHCG yields high reflectivity for both orthogonal polarizations simultaneously. Our experiment demonstrates that MHCGs are promising candidates to replace conventional mirrors like distributed Bragg reflectors to realize resonator based optical and optoelectronic devices such as resonant cavity enhanced light emitting diodes and resonant cavity enhanced photodetectors in the mid-infrared spectral region, for which epitaxial growth of distributed Bragg reflectors is challenging.
KW  - monolithic grating
KW  - high contrast
KW  - mid-infrared wavelength applications
KW  - epitaxial structures
KW  - GaSb/AlAsSb
Y1  - 2023
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-350346
VL  - 31
IS  - 10
ER  - 
TY  - JOUR
A1  - Kotte, K.
A1  - Löw, F.
A1  - Huber, S. G.
A1  - Krause, T.
A1  - Mulder, I.
A1  - Schöler, H. F.
T1  - Organohalogen emissions from saline environments - spatial extrapolation using remote sensing as most promising tool
JF  - Biogeosciences
N2  - Due to their negative water budget most recent semi-/arid regions are characterized by vast evaporates (salt lakes and salty soils). We recently identified those hyper-saline environments as additional sources for a multitude of volatile halogenated organohalogens (VOX). These compounds can affect the ozone layer of the stratosphere and play a key role in the production of aerosols. A remote sensing based analysis was performed in the Southern Aral Sea basin, providing information of major soil types as well as their extent and spatial and temporal evolution. VOX production has been determined in dry and moist soil samples after 24 h. Several C1- and C2 organohalogens have been found in hyper-saline topsoil profiles, including CH3Cl, CH3Br, CHBr3 and CHCl3. The range of organohalogens also includes trans-1,2-dichloroethene (DCE), which is reported here to be produced naturally for the first time. Using MODIS time series and supervised image classification a daily production rate for DCE has been calculated for the 15 000 km\(^2\) ranging research area in the southern Aralkum. The applied laboratory setup simulates a short-term change in climatic conditions, starting from dried-out saline soil that is instantly humidified during rain events or flooding. It describes the general VOX production potential, but allows only for a rough estimation of resulting emission loads. VOX emissions are expected to increase in the future since the area of salt affected soils is expanding due to the regressing Aral Sea. Opportunities, limits and requirements of satellite based rapid change detection and salt classification are discussed.
KW  - aral sea basin
KW  - methyl-bromide
KW  - methane emissions
KW  - abiotic formation
KW  - time series
KW  - salt lakes
KW  - land
KW  - Uzbekistan
KW  - soils/sediments
KW  - classifiaction
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-134265
VL  - 9
IS  - 3
ER  - 
TY  - JOUR
A1  - Scognamiglio, Roberta
A1  - Cabezas-Wallscheid, Nina
A1  - Thier, Marc Christian
A1  - Altamura, Sandro
A1  - Reyes, Alejandro
A1  - Prendergast, Áine M.
A1  - Baumgärtner, Daniel
A1  - Carnevalli, Larissa S.
A1  - Atzberger, Ann
A1  - Haas, Simon
A1  - von Paleske, Lisa
A1  - Boroviak, Thorsten
A1  - Wörsdörfer, Philipp
A1  - Essers, Marieke A. G.
A1  - Kloz, Ulrich
A1  - Eisenman, Robert N.
A1  - Edenhofer, Frank
A1  - Bertone, Paul
A1  - Huber, Wolfgang
A1  - van der Hoeven, Franciscus
A1  - Smith, Austin
A1  - Trumpp, Andreas
T1  - Myc depletion induces a pluripotent dormant state mimicking diapause
JF  - Cell
N2  - Mouse embryonic stem cells (ESCs) are maintained in a naive ground state of pluripotency in the presence of MEK and GSK3 inhibitors. Here, we show that ground-state ESCs express low Myc levels. Deletion of both c-myc and N-myc (dKO) or pharmacological inhibition of Myc activity strongly decreases transcription, splicing, and protein synthesis, leading to proliferation arrest. This process is reversible and occurs without affecting pluripotency, suggesting that Myc-depleted stem cells enter a state of dormancy similar to embryonic diapause. Indeed, c-Myc is depleted in diapaused blastocysts, and the differential expression signatures of dKO ESCs and diapaused epiblasts are remarkably similar. Following Myc inhibition, pre-implantation blastocysts enter biosynthetic dormancy but can progress through their normal developmental program after transfer into pseudo-pregnant recipients. Our study shows that Myc controls the biosynthetic machinery of stem cells without affecting their potency, thus regulating their entry and exit from the dormant state.
KW  - hematopoietic stem cells
KW  - leukemia inhibitory factor
KW  - c-Myc
KW  - N-Myc
KW  - gene expression
KW  - embryonic stem cells
KW  - self-renewal
KW  - protein synthesis
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-190868
VL  - 164
IS  - 4
ER  -