TY  - JOUR
A1  - Förster, Arnold
A1  - Novák, J.
A1  - Morvic, M.
T1  - Wet chemical separation of low-temperature GaAs layers from their GaAs substrates / J. Novák ; M. Morvic ;  J. Betko ; A. Förster ...
JF  - Materials science and engineering / B, Solid state materials for advanced technology. 40 (1996), H. 1
Y1  - 1996
SN  - 0921-5107
SP  - 58
EP  - 62
ER  - 
TY  - JOUR
A1  - Hoskens, R. C. P.
A1  - Tolstikhin, V.I.
A1  - Förster, Arnold
A1  - Roer, T.G. van de
T1  - Vertically integrated transistor-laser structure, take 2
JF  - WOCSDICE  2000, 24th Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe : May 29 - June 02, 2000, Aegean Sea, Greece.
Y1  - 2000
SN  - 0970311109
N1  - WOCSDICE ; (24, 2000) Workshop on Compound Semiconductor Devices and Integrated Circuits held in Europe ; (24 : ; 2000.05.29-06.02)
PB  - Univ. of Michigan
CY  - Ann Arbor, Mich.
ER  - 
TY  - JOUR
A1  - Vogt, C.
A1  - Mottaghy, Darius
A1  - Rath, V.
A1  - Marquart, G.
A1  - Dijkshoorn, L.
A1  - Wolf, A.
A1  - Clauser, C.
T1  - Vertical variation in heat flow on the Kola Peninsula: palaeoclimate or fluid flow?
JF  - Geophysical Journal International
N2  - Following earlier studies, we present forward and inverse simulations of heat and fluid transport of the upper crust using a local 3-D model of the Kola area. We provide best estimates for palaeotemperatures and permeabilities, their errors and their dependencies. Our results allow discriminating between the two mentioned processes to a certain extent, partly resolving the non-uniqueness of the problem. We find clear indications for a significant contribution of advective heat transport, which, in turn, imply only slightly lower ground surface temperatures during the last glacial maximum relative to the present value. These findings are consistent with the general background knowledge of (i) the fracture zones and the corresponding fluid movements in the bedrock and (ii) the glacial history of the Kola area.
Y1  - 2014
U6  - http://dx.doi.org/10.1093/gji/ggu282
SN  - 1365-246X
VL  - 199
IS  - 2
SP  - 829
EP  - 843
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Malzer, S.
A1  - Heber, J.
A1  - Peter, M.
T1  - Vertical transport and relaxation mechanisms in d-doping superlattices. Malzer, S.; Heber, J.; Peter, M.; Eckl, S.; Elpelt, R.; Doehler, G. H.; Förster, A.; Lüth, H.
JF  - Physica E: Low-dimensional Systems and Nanostructures. 2 (1998), H. 1-4
Y1  - 1998
SN  - 1386-9477
SP  - 349
EP  - 352
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Muggli, J.
A1  - Scheidweiler, A.
T1  - Verification of Ionization Chamber Theory
JF  - Fire Technology. 19 (1983), H. 1
Y1  - 1983
SN  - 1572-8099
SP  - 14
EP  - 21
ER  - 
TY  - JOUR
A1  - Pieper, Martin
T1  - Vector hyperinterpolation on the sphere
JF  - Journal of approximation theory. 156 (2009), H. 2
Y1  - 2009
SN  - 0021-9045
SP  - 173
EP  - 186
ER  - 
TY  - JOUR
A1  - Giresini, Linda
A1  - Sassu, Mauro
A1  - Butenweg, Christoph
A1  - Alecci, Valerio
A1  - De Stefano, Mario
T1  - Vault macro-element with equivalent trusses in global seismic analyses
JF  - Earthquakes and Structures
N2  - This paper proposes a quick and simplified method to describe masonry vaults in global seismic analyses of buildings. An equivalent macro-element constituted by a set of six trusses, two for each transverse, longitudinal and diagonal direction, is introduced. The equivalent trusses, whose stiffness is calculated by fully modeled vaults of different geometry, mechanical properties and boundary conditions, simulate the vault in both global analysis and local analysis, such as kinematic or rocking approaches. A parametric study was carried out to investigate the influence of geometrical characteristics and mechanical features on the equivalent stiffness values. The method was numerically validated by performing modal and transient analysis on a three naves-church in the elastic range. Vibration modes and displacement time-histories were compared showing satisfying agreement between the complete and the simplified models. This procedure is particularly useful in engineering practice because it allows to assess, in a simplified way, the effectiveness of strengthening interventions for reducing horizontal relative displacements between vault supports.
KW  - vault
KW  - macro-element
KW  - equivalent stiffness
KW  - truss
KW  - churches
Y1  - 2017
U6  - http://dx.doi.org/10.12989/eas.2017.12.4.409
SN  - 2092-7614 (Print)
SN  - 2092-7622 (Online)
VL  - 12
IS  - 4
SP  - 409
EP  - 423
PB  - Techno-Press
CY  - Taejŏn
ER  - 
TY  - JOUR
A1  - Jablonowski, Nicolai David
A1  - Kollmann, Tobias
A1  - Nabel, Moritz
A1  - Damm, Tatjana
A1  - Klose, Holger
A1  - Müller, Michael
A1  - Bläsing, Marc
A1  - Seebold, Sören
A1  - Krafft, Simone
A1  - Kuperjans, Isabel
A1  - Dahmen, Markus
A1  - Schurr, Ulrich
T1  - Valorization of Sida (Sida hermaphrodita) biomass for multiple energy purposes
JF  - GCB [Global Change Biology] Bioenergy
N2  - The performance and biomass yield of the perennial energy plant Sida hermaphrodita (hereafter referred to as Sida) as a feedstock for biogas and solid fuel was evaluated throughout one entire growing period at agricultural field conditions. A Sida plant development code was established to allow comparison of the plant growth stages and biomass composition. Four scenarios were evaluated to determine the use of Sida biomass with regard to plant development and harvest time: (i) one harvest for solid fuel only; (ii) one harvest for biogas production only; (iii) one harvest for biogas production, followed by a harvest of the regrown biomass for solid fuel; and (iv) two consecutive harvests for biogas production. To determine Sida's value as a feedstock for combustion, we assessed the caloric value, the ash quality, and melting point with regard to DIN EN ISO norms. The results showed highest total dry biomass yields of max. 25 t ha⁻¹, whereas the highest dry matter of 70% to 80% was obtained at the end of the growing period. Scenario (i) clearly indicated the highest energy recovery, accounting for 439 288 MJ ha⁻¹; the energy recovery of the four scenarios from highest to lowest followed this order: (i) ≫ (iii) ≫ (iv) > (ii). Analysis of the Sida ashes showed a high melting point of >1500 °C, associated with a net calorific value of 16.5–17.2 MJ kg⁻¹. All prerequisites for DIN EN ISO norms were achieved, indicating Sida's advantage as a solid energy carrier without any post-treatment after harvesting. Cell wall analysis of the stems showed a constant lignin content after sampling week 16 (July), whereas cellulose had already reached a plateau in sampling week 4 (April). The results highlight Sida as a promising woody, perennial plant, providing biomass for flexible and multipurpose energy applications.
Y1  - 2016
U6  - http://dx.doi.org/10.1111/gcbb.12346
SN  - 1757-1707 (online)
SN  - 1757-1693 (print)
N1  - Special Issue: Perennial biomass crops for a resource constrained world
VL  - 9
IS  - 1
SP  - 202
EP  - 214
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Ultrahigh frequency measurements of magnetic penetration length and surface impedance of YBa2Cu3O7–x microstriplines on Si and GaAs substrates . Rüders, F; Hollricher, O.;  Copetti, C. A. ; Förster,  A. ; Buchal, Ch. ; Prusseit, W.  ; Kinder, H.
JF  - Journal of Applied Physics. 77 (1995), H. 10
Y1  - 1995
SN  - 1089-7550
SP  - 5282
EP  - 5286
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Marso, M.
A1  - Mikulics, V. V.
A1  - Adam, R.
T1  - Ultrafast Phenomena in Freestanding LT-GaAs Devices. Marso, M.; Mikulics, V. V.; Adam, R.; Wu, S.; Zheng, X.; Camara, I.; Siebe, N. Y.; Förster, A.; Güsten, R.; Kordos, P.; Sobolewski, R.
JF  - Acta physica Polonica / A. 107 (2005), H. 1
Y1  - 2005
SN  - 0587-4246
SP  - 109
EP  - 117
ER  - 
TY  - JOUR
A1  - Mikulics, M.
A1  - Adam, R.
A1  - Kordos, P.
A1  - Förster, Arnold
A1  - Lüth, H.
A1  - Wu, S.
A1  - Zheng, X.
A1  - Sobolewski, R.
T1  - Ultrafast low-temperature-grown epitaxial GaAs photodetectors transferred on flexible plastic substrates
JF  - IEEE photonics technology letters : IEEE PTL. 17 (2005), H. 8
Y1  - 2005
SN  - 1041-1135
SP  - 1725
EP  - 1727
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Mikulics, M.
A1  - Wu, S.
A1  - Marso, M.
T1  - Ultrafast and Highly Sensitive Photodetectors With Recessed Electrodes Fabricated on Low-Temperature-Grown GaAs. Mikulics, M.; Wu, S.; Marso, M.; Adam, R.; Förster, A.; van der Hart, A.; Kordos, P.; Lüth, H.; Sobolewski, R.
JF  - IEEE Photonics Technology Letters. 18 (2006), H. 7
Y1  - 2006
SP  - 820
EP  - 822
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Fend, Thomas
A1  - Pitz-Paal, Robert
A1  - Reutter, Oliver
T1  - Two novel high-porosity materials as volumetric receivers for concentrated solar radiation / Thomas Fend ; Robert Pitz-Paal ; Oliver Reutter ... Bernhard Hoffschmidt
JF  - Solar energy materials & solar cells. 84 (2004), H. 1
Y1  - 2004
SN  - 0927-0248
SP  - 291
EP  - 304
ER  - 
TY  - JOUR
A1  - Vitusevich, S. A.
A1  - Förster, Arnold
A1  - Indlekofer, K.-M.
A1  - Lüth, H.
A1  - Belyaev, A. E.
A1  - Glavin, B. A.
A1  - Konakova, R. V.
T1  - Tunneling Through X-Valley-Related Impurity States in GaAs/AlAs Resonant-Tunneling Diodes
JF  - Physical  Review . B. 61 (2000), H. 16
Y1  - 2000
SN  - 1550-235X
SP  - 10898
EP  - 10904
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, M.
A1  - Lüth, H.
T1  - Transport through a buried double barrier single electron transistor at low temperatures
JF  - Physica E: Low-dimensional Systems and Nanostructures. 2 (1998), H. 1-4
Y1  - 1998
SN  - 1386-9477
SP  - 502
EP  - 506
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, K. M.
A1  - Lüth, H.
T1  - Transport properties of gated resonant tunneling diodes in the single electron regime. Griebel, M.; Indlekofer,  K. M.; Förster, A.; Lüth, H.
JF  - Journal of Applied Physics. 84 (1998), H. 12
Y1  - 1998
SN  - 1089-7550
SP  - 6719
EP  - 6724
ER  - 
TY  - JOUR
A1  - Varga, Laszlo
A1  - Davinson, Thomas
A1  - Glorius, Jan
A1  - Jurado, Beatrix
A1  - Langer, Christoph
A1  - Lederer-Woods, Claudia
A1  - Litvinov, Yuri A.
A1  - Reifarth, Rene
A1  - Slavkovska, Zuzana
A1  - Stöhlker, Thomas
A1  - Woods, Phil J.
A1  - Xing, Yuan Ming
T1  - Towards background-free studies of capture reaction in a heavy-ion storage ring
JF  - Journal of Physics: Conference Series
N2  - Stored and cooled, highly-charged ions offer unprecedented capabilities for precision studies in the realm of atomic, nuclear structure and astrophysics[1]. After the successful investigation of the 96Ru(p,7)97Rh reaction cross section in 2009[2], the first measurement of the 124Xe(p,7)125Cs reaction cross section has been performed with decelerated, fully-ionized 124Xe ions in 2016 at the Experimental Storage Ring (ESR) of GSI[3]. Using a Double Sided Silicon Strip Detector, introduced directly into the ultra-high vacuum environment of a storage ring, the 125Cs proton-capture products have been successfully detected. The cross section has been measured at 5 different energies between 5.5AMeV and 8AMeV, on the high energy tail of the Gamow-window for hot, explosive scenarios such as supernovae and X-ray binaries. The elastic scattering on the H2 gas jet target is the major source of background to count the (p,7) events. Monte Carlo simulations show that an additional slit system in the ESR in combination with the energy information of the Si detector will enable background free measurements of the proton-capture products. The corresponding hardware is being prepared and will increase the sensitivity of the method tremendously.
Y1  - 2020
VL  - 1668
IS  - Art 012046
PB  - IOP
CY  - Bristol
ER  - 
TY  - JOUR
A1  - Kern, Alexander
T1  - Time dependent temperature distribution in metal sheets caused by direct lightning strikes
JF  - Proceedings / Sixth International Symposium on High Voltage Engineering : 28. August - 1. September, 1989, Westin Canal Place Hotel, New Orleans, Louisiana, USA
Y1  - 1989
N1  - International Symposium on High Voltage Engineering <6, 1989, New Orleans, La.>
PB  - Mississippi State University
CY  - Mississippi State, Miss.
ER  - 
TY  - JOUR
A1  - Balewski, J.
A1  - Brauksiepe, S.
A1  - Hardt, Arno
T1  - Threshold measurements at the internal experimental facility COSY-11 / J. Balewski [u.a.]
JF  - Nuclear physics A. Vol. 626, iss. 1-2
Y1  - 1997
SN  - 1873-1554 (E-Journal) ; 0375-9474 (Print)
SP  - 85
EP  - 92
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Wolf, U.
A1  - Deschka, S.
A1  - Nickel, H.
T1  - Thermomechanical analysis of an actively cooled divertor mock up
JF  - Tagungsbericht : Jahrestagung Kerntechnik : Stadthalle Karlsruhe, 5.-7. Mai 1992, Karlsruhe = Proceedings / Kerntechnische Gesellschaft ... [Red.: Karl G. Bauer]. - 1. Aufl., als Ms. gedr..
Y1  - 1992
N1  - Jahrestagung Kerntechnik <1992, Karlsruhe>
SP  - 457
EP  - 461
PB  - INFOFORUM
CY  - Bonn
ER  -