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    <title language="eng">Re-assessment of monoclonal antibodies against diclofenac for their application in the analysis of environmental waters</title>
    <abstract language="eng">The non-steroidal anti-inflammatory drug (NSAID) diclofenac (DCF) is an important environmental contaminant occurring in surface waters all over the world, because, after excretion, it is not adequately removed from wastewater in sewage treatment plants. To be able to monitor this pollutant, highly efficient analytical methods are needed, including immunoassays. In a medical research project, monoclonal antibodies against diclofenac and its metabolites had been produced. Based on this monoclonal anti-DCF antibody, a new indirect competitive enzyme-linked immunosorbent assay (ELISA) was developed and applied for environmental samples. The introduction of a spacer between diclofenac and the carrier protein in the coating conjugate led to higher sensitivity. With a test midpoint of 3 mg L−1 and a measurement range of 1–30 mg L−1, the system is not sensitive enough for direct analysis of surface water. However, this assay is quite robust against matrix influences and can be used for wastewater. Without adjustment of the calibration, organic solvents up to 5%, natural organic matter (NOM) up to 10 mg L−1, humic acids up to 2.5 mg L−1, and salt concentrations up to 6 g L−1 NaCl and 75 mg L−1 CaCl2 are tolerated. The antibody is also stable in a pH range from 3 to 12. Cross-reactivity (CR) of 1% or less was determined for the metabolites 40-hydroxydiclofenac (40-OH-DCF), 5-hydroxydiclofenac (5-OH-DCF), DCF lactam, and other NSAIDs. Relevant cross-reactivity occurred only with an amide derivative of DCF, 6-aminohexanoic acid (DCF-Ahx), aceclofenac (ACF) and DCF methyl ester (DCF-Me) with 150%, 61% and 44%, respectively. These substances, however, have not been found in samples. Only DCF-acyl glucuronide with a cross-reactivity of 57% is of some relevance. For the first time, photodegradation products were tested for cross-reactivity. With the ELISA based on this antibody, water samples were analysed. In sewage treatment plant effluents, concentrations in the range of 1.9–5.2 mg L−1 were determined directly, with recoveries compared to HPLC-MS/MS averaging 136%.&#13;
Concentrations in lakes ranged from 3 to 4.4 ng L−1 and were, after pre-concentration, determined with an average recovery of 100%</abstract>
    <parentTitle language="eng">Analytical Methods</parentTitle>
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    <author>Markus Steiner</author>
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    <title language="eng">Smart Products Enable Smart Regulations—Optimal Durability Requirements Facilitated by the IoT</title>
    <abstract language="eng">The challenges and opportunities linked with IoT have been intensively discussed in recent years. The connectivity of things over their entire life cycle and the smart properties associated with it provide new functionalities and unprecedented availability of (usage) data. This offers huge opportunities for manufacturers, service providers, users, and also policymakers. The latter May impact policy areas such as the regulations on resource and materials efficiency under the Ecodesign Directive 2009/125/EC. With the general approach as it is practiced today, legal requirements are usually set for entire product groups without considering the products individually, including user behavior and environmental conditions. The increasing number of smart products and the growing availability of product data are sparking a discussion on whether these requirements could be more product and application-specific. This paper presents a method for calculating the economically and ecologically optimal durability of a product. It allows determining the point in time when a product should be replaced by combining consumer data with product design data. This novel Approach could contribute to making product regulation more flexible and possibly more efficient. In this context, fundamental challenges associated with smart products in policymaking are also discussed.</abstract>
    <parentTitle language="eng">Sustainability</parentTitle>
    <identifier type="doi">10.3390/su13084395</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-524924</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">31.05.2021</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Moritz-Caspar Schlegel</author>
    <author>Claudia Koch</author>
    <author>Mona Mirtsch</author>
    <author>Andrea Harrer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ecodesign</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Internet of Things</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Connectivity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resource efficiency</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Policy making</value>
    </subject>
    <collection role="ddc" number="628">Sanitär- und Kommunaltechnik; Umwelttechnik</collection>
    <collection role="institutes" number="">S Qualitätsinfrastruktur</collection>
    <collection role="institutes" number="">S.2 Digitalisierung der Qualitätsinfrastruktur</collection>
    <collection role="institutes" number="">S.3 Ökodesign und Energieverbrauchskennzeichnung</collection>
    <collection role="themenfelder" number="">Umwelt</collection>
    <collection role="themenfelder" number="">Umwelt-Material-Interaktionen</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/52492/Smart Products Enable Smart Regulations_Sustainability_2021_13_4395.pdf</file>
  </doc>
  <doc>
    <id>32733</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>156</pageFirst>
    <pageLast>166</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>82</volume>
    <type>article</type>
    <publisherName>Oldenbourg</publisherName>
    <publisherPlace>München</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Resonanzfreie Messung und Anregung von Ultraschall</title>
    <abstract language="deu">In diesem Beitrag präsentieren wir innovative Methoden für die breitbandige und resonanzfreie Messung und Anregung von Ultraschall. Das Messverfahren verwendet eine Kunststofffolie und ein Laser-Vibrometer als breitbandigen und resonanzfreien Empfänger. Im Allgemeinen ermöglicht dieses Verfahren eine präzise Messung der Schallschnelle und des Schalldruckes in beliebigen, für das Laserlicht transparenten Flüssigkeiten und Gasen mit bekannter Dichte und Schallgeschwindigkeit. Das resonanzfreie Senden von Ultraschall basiert auf einem elektro-thermo-akustischen Wandlerprinzip und ermöglicht, im Gegensatz zu herkömmlichen Ultraschallwandlern, die Erzeugung von beliebig geformten akustischen Signalen ohne Resonanzen und ohne Nachschwingen.</abstract>
    <abstract language="eng">In this contribution we present innovative methods for broadband and resonance-free sensing and emitting of ultrasound. The sensing method uses a polyethylene foil and a laser vibrometer as a broadband and resonance-free sound receiver. In general, this method enables absolute measurement of sound particle velocity and sound pressure in arbitrary, laser beam transparent liquids and gases with known density and sound velocity. The resonance-free emitting method is based on the electro-thermo-acoustic principle and enables, contrary to conventional ultrasound transducers, generation of arbitrary shaped acoustic signals without resonances and post-oscillations.</abstract>
    <parentTitle language="deu">Technisches Messen</parentTitle>
    <identifier type="old">35809</identifier>
    <identifier type="doi">10.1515/teme-2014-0020</identifier>
    <identifier type="issn">0340-837X</identifier>
    <identifier type="issn">0178-2312</identifier>
    <identifier type="issn">0171-8096</identifier>
    <enrichment key="date_peer_review">12.03.2015</enrichment>
    <author>Maxim Daschewski</author>
    <author>Marc Kreutzbruck</author>
    <author>Jens Prager</author>
    <author>Elmar Dohse</author>
    <author>Mate Gaal</author>
    <author>Andrea Harrer</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ultraschall</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Übertragungsfunktion</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Charakterisierung von Ultraschallmesssystemen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Thermo-akustische Ultraschallemitter</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ultrasound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Transfer function</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Characterization of ultrasonic measurement systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermo-acoustic ultrasound emitter</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>26788</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>624</pageFirst>
    <pageLast>627</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1433</issue>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>American Institute of Physics</publisherName>
    <publisherPlace>Melville, NY</publisherPlace>
    <creatingCorporation>University of Gdansk, Poland</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Carbon nanomaterials as broadband airborne ultrasound transducer</title>
    <abstract language="eng">A method has been developed for the generation of airborne ultrasound using the thermoacoustic principle applied to carbon materials at the micro- and nanoscale. Such materials are shown to be capable to emitting the ultrasound. We tested the acoustic performance of electrospun polyacrylonitrile-derived carbon nanofibers tissues and determined the sound pressure for frequencies up to 350 kHz. The experimental results are compared to analytic calculations.</abstract>
    <parentTitle language="eng">International congress on ultrasonics</parentTitle>
    <identifier type="old">29570</identifier>
    <identifier type="isbn">978-0-7354-1019-0</identifier>
    <identifier type="doi">10.1063/1.3703262</identifier>
    <identifier type="issn">0094-243X</identifier>
    <note>Serientitel: AIP conference proceedings – Series title: AIP conference proceedings</note>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="eventName">International congress on ultrasonics</enrichment>
    <enrichment key="eventPlace">Gdansk, Poland</enrichment>
    <enrichment key="eventStart">2011-09-05</enrichment>
    <enrichment key="eventEnd">2011-09-08</enrichment>
    <enrichment key="date_peer_review">25.10.2012</enrichment>
    <author>Maxim Daschewski</author>
    <author>Andrea Harrer</author>
    <author>Jens Prager</author>
    <author>Marc Kreutzbruck</author>
    <author>Matthias Guderian</author>
    <author>Asmus Meyer-Plath</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermoacoustic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Airborne ultrasound transducer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sound pressure</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>29152</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>965</pageFirst>
    <pageLast>967</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>Institute of Electrical and Electronics Engineers (IEEE)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Metallic nanofilm as resonance-free airborne ultrasound emitter</title>
    <abstract language="eng">A novel approach for the generation of broadband airborne ultrasound by using the thermo-acoustic effect is presented in this contribution. We investigate the applicability of resonance-free thermo-acoustic emitters for generation of very short high pressure airborne ultrasound pulses. A thermoacoustic emitter consisting of a 30 nm thin metallic film on a usual soda-lime glass substrate generates sound pressure values of more than 140 dB at 60 mm distance. The results are compared with conventional piezoelectric airborne ultrasound transducers. Our investigations show the applicability of the thermo-acoustic devices for broadband and high pressure ultrasound emitters using pulse excitation.</abstract>
    <parentTitle language="eng">IUS 2012 -  IEEE International Ultrasonics Symposium (Proceedings)</parentTitle>
    <identifier type="old">32054</identifier>
    <identifier type="isbn">978-1-4673-4562-0</identifier>
    <identifier type="doi">10.1109/ULTSYM.2012.0241</identifier>
    <identifier type="issn">1948-5719</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="eventName">2012 IEEE International Ultrasonics Symposium (IUS)</enrichment>
    <enrichment key="eventPlace">Dresden, Germany</enrichment>
    <enrichment key="eventStart">2012-10-07</enrichment>
    <enrichment key="eventEnd">2012-10-10</enrichment>
    <enrichment key="date_peer_review">26.09.2013</enrichment>
    <author>Maxim Daschewski</author>
    <author>Andrea Harrer</author>
    <author>Jens Prager</author>
    <author>Marc Kreutzbruck</author>
    <author>Uwe Beck</author>
    <author>Thorid Lange</author>
    <author>Matthias Weise</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermo-acoustic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Broadband airborne ultrasound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resonance-free ultrasound transducer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High pressure airborne ultrasound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sound particle velocity measurement</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>27790</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1541</pageFirst>
    <pageLast>1546</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>1511</volume>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>American institute of physics (AIP)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A resonance-free nano-film airborne ultrasound emitter</title>
    <abstract language="eng">In this contribution we present a novel thermo-acoustic approach for the generation of broad band airborne ultrasound and investigate the applicability of resonance-free thermo-acoustic emitters for very short high pressure airborne ultrasound pulses. We report on measurements of thermo-acoustic emitter consisting of a 30 nm thin metallic film on a usual soda-lime glass substrate, generating sound pressure values of more than 140 dB at 60 mm distance from the transducer and compare the results with conventional piezoelectric airborne ultrasound transducers. Our experimental investigations show that such thermo-acoustic devices can be used as broad band emitters using pulse excitation.</abstract>
    <parentTitle language="eng">39th Annual review of progress in quantitative nondestructive evaluation (Proceedings)</parentTitle>
    <identifier type="old">30625</identifier>
    <identifier type="isbn">978-0-7354-1129-6</identifier>
    <identifier type="doi">10.1063/1.4789225</identifier>
    <identifier type="issn">0094-243X</identifier>
    <identifier type="issn">1551-7616</identifier>
    <note>Serientitel: AIP conference proceedings – Series title: AIP conference proceedings</note>
    <enrichment key="eventName">39th Annual review of progress in quantitative nondestructive evaluation</enrichment>
    <enrichment key="eventPlace">Denver, Colorado, USA</enrichment>
    <enrichment key="eventStart">15.07.2012</enrichment>
    <enrichment key="eventEnd">20.07.2012</enrichment>
    <enrichment key="date_peer_review">05.03.2013</enrichment>
    <author>Maxim Daschewski</author>
    <author>Andrea Harrer</author>
    <author>Jens Prager</author>
    <author>Marc Kreutzbruck</author>
    <author>Uwe Beck</author>
    <author>Thorid Lange</author>
    <author>Matthias Weise</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermo-acoustic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Broad band airborne ultrasound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>High pressure airborne ultrasound</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resonance free ultrasound transducer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Broad band ultrasonic emitter</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Measurement sound particle velocity</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>29278</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>114903-1 - 114903-12</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>114</volume>
    <type>article</type>
    <publisherName>American Institute of Physics</publisherName>
    <publisherPlace>Melville, NY</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Physics of thermo-acoustic sound generation</title>
    <abstract language="eng">We present a generalized analytical model of thermo-acoustic sound generation based on the analysis of thermally induced energy density fluctuations and their propagation into the adjacent matter. The model provides exact analytical prediction of the sound pressure generated in fluids and solids; consequently, it can be applied to arbitrary thermal power sources such as thermophones, plasma firings, laser beams, and chemical reactions. Unlike existing approaches, our description also includes acoustic near-field effects and sound-field attenuation. Analytical results are compared with measurements of sound pressures generated by thermo-acoustic transducers in air for frequencies up to 1 MHz. The tested transducers consist of titanium and indium tin oxide coatings on quartz glass and polycarbonate substrates. The model reveals that thermo-acoustic efficiency increases linearly with the supplied thermal power and quadratically with thermal excitation frequency. Comparison of the efficiency of our thermo-acoustic transducers with those of piezoelectric-based airborne ultrasound transducers using impulse excitation showed comparable sound pressure values. The present results show that thermo-acoustic transducers can be applied as broadband, non-resonant, high-performance ultrasound sources.</abstract>
    <parentTitle language="eng">Journal of applied physics</parentTitle>
    <identifier type="old">32189</identifier>
    <identifier type="doi">10.1063/1.4821121</identifier>
    <identifier type="issn">0021-8979</identifier>
    <identifier type="issn">1089-7550</identifier>
    <enrichment key="date_peer_review">21.10.2013</enrichment>
    <author>Maxim Daschewski</author>
    <author>Rainer Boehm</author>
    <author>Jens Prager</author>
    <author>Marc Kreutzbruck</author>
    <author>Andrea Harrer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermophone</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ionophone</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermo-acoustic effect</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Non resonant ultrasound source</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>26737</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>35</pageFirst>
    <pageLast>41</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1-4</issue>
    <volume>39</volume>
    <type>article</type>
    <publisherName>IOS Press</publisherName>
    <publisherPlace>Amsterdam, The Netherlands</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Thermoacoustic generation of airborne ultrasound using carbon materials at the micro- and nanoscale</title>
    <abstract language="eng">The generation of airborne ultrasound is presented using the thermoacoustic principle applied to carbon materials at the micro- and nanoscale. Such materials are shown to be capable of emitting ultrasound when being fed by an alternating current. We tested the acoustic performance of carbon fibers, bucky papers and electrospun polyacrylonitrile-derived carbon nanofibers and determined the sound pressure for frequencies up to 350 kHz. A comparison between the experimental results and the theoretical prediction showed remarkable agreement for frequencies up to 150 kHz. Beyond 150 kHz, we found slight deviations from the expected sound pressure dependence on the square root of the frequency.</abstract>
    <parentTitle language="eng">International journal of applied electromagnetics and mechanics</parentTitle>
    <identifier type="old">29519</identifier>
    <identifier type="doi">10.3233/JAE-2012-1440</identifier>
    <identifier type="issn">1383-5416</identifier>
    <identifier type="issn">0925-2096</identifier>
    <enrichment key="date_peer_review">22.10.2012</enrichment>
    <author>Andrea Harrer</author>
    <author>Maxim Daschewski</author>
    <author>Jens Prager</author>
    <author>Marc Kreutzbruck</author>
    <author>Matthias Guderian</author>
    <author>Asmus Meyer-Plath</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Thermoacoustic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Airborne ultrasound transducer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sound pressure</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
