@article{SparlaSchmidt2004,
  author    = {Sparla, Peter and Schmidt, Hubert},
  title     = {Anmerkungen zu "Ein verallgemeinertes Feldverfahren zur {\"U}berpr{\"u}fung von Nivellierger{\"a}ten." AVN 3 /2004, S. 82 / Schmidt, Hubert ; Sparla, Peter},
  series = {Allgemeine Vermessungs-Nachrichten : AVN ; Zeitschrift f{\"u}r alle Bereiche des Vermessungswesens. 111 (2004), H. 11-12},
  journal   = {Allgemeine Vermessungs-Nachrichten : AVN ; Zeitschrift f{\"u}r alle Bereiche des Vermessungswesens. 111 (2004), H. 11-12},
  isbn      = {0002-5968},
  pages     = {405 -- 408},
  year      = {2004},
  language  = {de}
}
@inproceedings{Becker2006,
  author    = {Becker, Astrid},
  title     = {Anlagenmanagement und Aufgaben der DB Netz AG, Bauherrenvertretung und Wirtschaftlichkeit},
  year      = {2006},
  abstract  = {In: Alfha.net / Sektion Bauingenieurwesen: 1. [Erster] Erfahrungsaustausch : Absolventen des Fachbereichs Bauingenieurwesens berichten. 13. Oktober 2006. S. 18 {\"U}bersicht des Vortrags},
  subject      = {Anlagenwirtschaft},
  language  = {de}
}
@book{Dienst1986,
  author    = {Dienst, Karl-Jakob},
  title     = {Angewandte Mathematik f{\"u}r Bauingenieure. Das Weggr{\"o}ssenverfahren nach Theorie I. und II. Ordnung / K. J. Dienst. Fachhochsch. Aachen, Fachbereich 2, Bauingenieurwesen},
  publisher = {Fachhochsch. Aachen},
  address   = {Aachen},
  pages     = {70 S. : graph. Darst.},
  year      = {1986},
  language  = {de}
}
@article{Biener1995,
  author    = {Biener, Ernst},
  title     = {Anforderungen an die Deponietechnik},
  series = {[Tagungsunterlagen] Euregionale Abfallwirtschaft im Dialog / AWA Entsorgung GmbH},
  journal   = {[Tagungsunterlagen] Euregionale Abfallwirtschaft im Dialog / AWA Entsorgung GmbH},
  publisher = {AWA [Eigenverl.]},
  address   = {Aachen},
  pages     = {1 -- 6},
  year      = {1995},
  language  = {de}
}
@inproceedings{Hoffmann2009,
  author    = {Hoffmann, Marc},
  title     = {Analyse und Visualisierung von zeitbezogenen Daten im Raum - Beispiele aus Hydrologie und Wasserwirtschaft},
  year      = {2009},
  abstract  = {Dipl.-Ing Marc Hoffmann - Kisters AG, Aachen. 13 S. (S. 32-44). Beitrag zum 2. Aachener Softwaretag in der Wasserwirtschaft <2, 2009, Aachen> Zahlreiche Folien, Grafiken und Praxisbeispiele},
  subject      = {Visualisierung},
  language  = {de}
}
@book{Polumsky1977,
  author    = {Polumsky, Dieter},
  title     = {Analyse und Prognose des G{\"u}terverkehrs im Raum Mittelrhein / Rothschuh, Bruno [Mitarb.] ... Polumsky, Dieter [Mitarb.]},
  publisher = {Selbstverl.},
  address   = {Aachen},
  isbn      = {3-88354-057-9},
  pages     = {ca. 260 S.},
  year      = {1977},
  language  = {de}
}
@article{CheenakulaHoffstadtKrafftetal.2022,
  author    = {Cheenakula, Dheeraja and Hoffstadt, Kevin and Krafft, Simone and Reinecke, Diana and Klose, Holger and Kuperjans, Isabel and Gr{\"o}mping, Markus},
  title     = {Anaerobic digestion of algal-bacterial biomass of an Algal Turf Scrubber system},
  series = {Biomass Conversion and Biorefinery},
  volume    = {13},
  journal   = {Biomass Conversion and Biorefinery},
  publisher = {Springer},
  address   = {Berlin},
  issn      = {2190-6823},
  doi       = {10.1007/s13399-022-03236-z},
  pages     = {15 Seiten},
  year      = {2022},
  abstract  = {This study investigated the anaerobic digestion of an algal-bacterial biofilm grown in artificial wastewater in an Algal Turf Scrubber (ATS). The ATS system was located in a greenhouse (50°54′19ʺN, 6°24′55ʺE, Germany) and was exposed to seasonal conditions during the experiment period. The methane (CH4) potential of untreated algal-bacterial biofilm (UAB) and thermally pretreated biofilm (PAB) using different microbial inocula was determined by anaerobic batch fermentation. Methane productivity of UAB differed significantly between microbial inocula of digested wastepaper, a mixture of manure and maize silage, anaerobic sewage sludge, and percolated green waste. UAB using sewage sludge as inoculum showed the highest methane productivity. The share of methane in biogas was dependent on inoculum. Using PAB, a strong positive impact on methane productivity was identified for the digested wastepaper (116.4\%) and a mixture of manure and maize silage (107.4\%) inocula. By contrast, the methane yield was significantly reduced for the digested anaerobic sewage sludge (50.6\%) and percolated green waste (43.5\%) inocula. To further evaluate the potential of algal-bacterial biofilm for biogas production in wastewater treatment and biogas plants in a circular bioeconomy, scale-up calculations were conducted. It was found that a 0.116 km2 ATS would be required in an average municipal wastewater treatment plant which can be viewed as problematic in terms of space consumption. However, a substantial amount of energy surplus (4.7-12.5 MWh a-1) can be gained through the addition of algal-bacterial biomass to the anaerobic digester of a municipal wastewater treatment plant. Wastewater treatment and subsequent energy production through algae show dominancy over conventional technologies.},
  language  = {en}
}
@inproceedings{DoeringFeldmannKuhnhenne2007,
  author    = {D{\"o}ring, Bernd and Feldmann, Markus and Kuhnhenne, Markus},
  title     = {An innovative thermally activated light-weight steel deck system - numerical investigations and practical tests},
  series = {Clima 2007 WellBeing Indoors: 9th Rehva World Congress, 10-14 June 2007, Helsinki, Finland : proceedings},
  booktitle = {Clima 2007 WellBeing Indoors: 9th Rehva World Congress, 10-14 June 2007, Helsinki, Finland : proceedings},
  address   = {Helsinki},
  isbn      = {978-952-99898-2-9},
  pages     = {1 -- 8},
  year      = {2007},
  language  = {en}
}
@article{RichterWichernGroempingetal.2020,
  author    = {Richter, L. and Wichern, M. and Gr{\"o}mping, Markus and Robecke, U. and Haberkamp, J.},
  title     = {Ammonium recovery from process water of digested sludge dewatering by membrane contactors},
  series = {Water Practice and Technology},
  volume    = {15},
  journal   = {Water Practice and Technology},
  number    = {1},
  publisher = {IWA Publishing},
  address   = {London},
  issn      = {1751-231X},
  doi       = {10.2166/wpt.2020.002},
  pages     = {84 -- 91},
  year      = {2020},
  abstract  = {Membrane contactors are a promising alternative for nitrogen removal and recovery from process water compared to other physicochemical and biological sidestream treatment processes. M{\"u}nster wastewater treatment plant (WWTP) is the first municipal WWTP in Germany operating a full-scale membrane contactor system to improve the nitrogen elimination and recovery efficiency. Factors influencing the operation and membrane performance are investigated in an accompanying research project. Additional operational aspects of the applied membrane modules are investigated in detail using a bench-scale membrane contactor. First results of the full-scale application demonstrate a high nitrogen removal efficiency of >95\%.},
  language  = {de}
}
@article{BienerSasse1991,
  author    = {Biener, Ernst and Sasse, T.},
  title     = {Altlasten-Bewertung bei Investitionsentscheidungen},
  series = {Bremer Unternehmer (1991)},
  journal   = {Bremer Unternehmer (1991)},
  pages     = {S. 27},
  year      = {1991},
  language  = {de}
}