ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Waveguide heterodyne mixers at THz-frequencies (2010)
    Univ. Köln
    Details
    Publication Date: 2021-03-29
    Description: Design and performance of waveguide mixers at 1.4 THz and 1.9 THz based on NbTiN phonon-cooled hot electron bolometers (HEB) fabricated on a 2 æm thick Si_3N_4 membrane. The membrane is bonded to a silicon frame in the mixer block using a flip chip process. Simulated RF coupling is compared with experimental results, showing good agreement. Receiver noise temperature measurements show uncorrected values of 1600 K at 1.4 THz and 2100 K at 1.9 THz, both at 1.5 GHz intermediate frequency. Device cooling on the membrane seems not to be problematic. The mixers are used in receivers for SOFIA (GREAT & CONDOR) and APEX (CONDOR).
    Description: thesis
    Keywords: 523 ; TBG 000 ; Infrarot-Astronomie
    Language: German
    Type: monograph , publishedVersion
    Format: 153 S.
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION GEO-LEO
  • 2
    facet.materialart.
    Unknown
    Die Vergasung von realer Biomasse in überkritischem Wasser. Untersuchung des Einflusses von Prozessvariablen und Edukteigenschaften (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-11
    Description: Ein großer Teil der Restbiomasse fällt als nasses Edukt an. Von allen Alternativen zur Energiegewinnung aus nasser Biomasse (Wasseranteil 〉50 %) hat die Vergasung in überkritischem Wasser den besten Wirkungsgrad.Gegenstand dieser Arbeit ist die Untersuchung des Einflusses der Prozessvariablen (Temperatur, Druck, Verweilzeit) und der Vorbereitung des Eduktes (Konzentration, Zerkleinerungsgrad, Zusatz von Additiven und Herkunft) auf die Reaktionsgeschwindigkeit in einem kontinuierlichen Rohrreaktor.
    Keywords: TP155-156 ; Überkritischer Zustand ; Vergasung ; Wasser ; Biomasse ; Bioenergieerzeugung ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TC Biochemical engineering::TCB Biotechnology
    Language: German
    Format: image/jpeg
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    E-BOOK
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...