TY  - JOUR
A1  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Zahlmann, P.
A1  - Zischank, Wolfgang J.
T1  - Blitzschutz
JF  - ETZ : Elektrotechnik + Automation. 114 (1993), H. 2
Y1  - 1993
SN  - 0170-1711
N1  - 2. ISSN: 0948-7387
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Klöters, Georg
A1  - Pferdmenges, Jörg
T1  - Blitzschutzoptimierung in der LST an nicht-elektrifizierten Strecken
JF  - Signal und Draht. 101 (2009), H. 4
Y1  - 2009
SN  - 0037-4997
SP  - 17
EP  - 21
PB  - DVV Media Group
CY  - Hamburg
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Schelthoff, Christof
A1  - Mathieu, Moritz
T1  - Calculation of interception efficiencies for airterminations using a dynamic electro-geometrical  model
Y1  - 2011
N1  - XI International Symposium on Lightning Protection (SIPDA), Fortaleza (Brasilien), 2011.
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Wiesinger, J.
A1  - Zischank, Wolfgang J.
T1  - Calculation of the longitudinal voltage along metal tubes caused by lightning currents and protection measures
JF  - Seventh International Symposium on High Voltage Engineering : Dresden, August 26 - 30 1991
Y1  - 1991
N1  - International Symposium on High Voltage Engineering <7, 1991, Dresden>
PB  - Techn. Univ.
CY  - Dresden
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
A1  - Kasper, W.
T1  - Calibration of Optical Particle Counters with Respect to Particle Size / Fißan, H. J. ; Helsper, C.; Kasper, W.
JF  - Particle and Particle Systems Characterization. 1 (1984), H. 1984
Y1  - 1984
SN  - 1521-4117
SP  - 108
EP  - 111
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Fißan, H. J.
T1  - Calibration of the Polytec HC-15 and HC-70 Optical Particle Counters / Fißan, H. J. ; Helsper, C.
JF  - Aerosols in the mining and industrial work environments, Vol. 3. Instrumentation, Marple, Virgil A. ; Liu, Benjamin Y.
Y1  - 1983
N1  - International Symposium on Aerosols in the Mining and Industrial Work Environment ; (1981.11.01-06 : ; Minneapolis/Minn.)
SP  - 825
EP  - 829
PB  - Ann Arbor Science
CY  - Ann Arbor, Mich.
ER  - 
TY  - JOUR
A1  - Hoffstadt, Kevin
A1  - Pohen, Gino D.
A1  - Dicke, Max D.
A1  - Paulsen, Svea
A1  - Krafft, Simone
A1  - Zang, Joachim W.
A1  - Fonseca-Zang, Warde A. da
A1  - Leite, Athaydes
A1  - Kuperjans, Isabel
T1  - Challenges and prospects of biogas from energy cane as supplement to bioethanol production
JF  - Agronomy
N2  - Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm²CBG concept is introduced, showing an approach for decentralized biogas production.
Y1  - 2020
U6  - https://doi.org/10.3390/agronomy10060821
SN  - 2073-4395
VL  - 10
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Thielemann, Frank
T1  - Chancen durch Online-Dienste?
JF  - OP DruckMagazin. 39 (1997), H. 1-2
Y1  - 1997
SN  - 0030-0594
SP  - 26
EP  - f.
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugenia Vieira da
T1  - Characterisation and design methods of solar cookers / Schwarzer, Klemens ; Silva, Maria Eugenia Vieira da
JF  - Solar energy. 82 (2008), H. 2
Y1  - 2008
SN  - 0038-092X
SP  - 157
EP  - 163
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Mölter, W.
T1  - Characteristics of a Nebulizer with Cyclone Preseparator / Mölter, W. ; Helsper, C.
JF  - Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5.
Y1  - 1991
SP  - 89
EP  - 94
CY  - Loughborough
ER  -