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  <doc>
    <id>764</id>
    <completedYear/>
    <publishedYear>2006</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>70</pageFirst>
    <pageLast>81</pageLast>
    <pageNumber/>
    <edition/>
    <issue>6</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Strahlungsthermometrie</title>
    <parentTitle language="deu">Automatisierungstechnische Praxis</parentTitle>
    <subTitle language="deu">Temperaturen berührungslos messen</subTitle>
    <author>Jürgen Hartmann</author>
    <author>Jörg Hollandt</author>
    <author>B. Gutschwager</author>
    <author>O. Struss</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>762</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>26</pageFirst>
    <pageLast>34</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Radiation thermometry capabilities of the PTB up to 3200 K</title>
    <parentTitle language="eng">MEASURE</parentTitle>
    <author>Jürgen Hartmann</author>
    <author>Jörg Hollandt</author>
    <author>Klaus Anhalt</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>768</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>63</pageFirst>
    <pageLast>67</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>5</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">New Developments in High-Temperature Measurement Techniques</title>
    <parentTitle language="eng">International Journal of Electrical and Computer Engineering Systems</parentTitle>
    <author>Jürgen Hartmann</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>535</id>
    <completedYear/>
    <publishedYear>2004</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>2004-01-1408</issue>
    <volume/>
    <type>article</type>
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    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Developing Planar Laser-Induced Fluorescence for the Investigation of the Mixture Formation Process in Hydrogen Engines</title>
    <parentTitle language="eng">SAE Paper</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV013334911</identifier>
    <author>Thomas Blotevogel</author>
    <author>Jan Egermann</author>
    <author>Jürgen Goldlücke</author>
    <author>Alfred Leipertz</author>
    <author>Matthias Hartmann</author>
    <author>Martin Schenk</author>
    <author>Martin Berckmueller</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="Autoren" number="blotevogel">Thomas Blotevogel</collection>
  </doc>
  <doc>
    <id>459</id>
    <completedYear/>
    <publishedYear>2005</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>139</pageFirst>
    <pageLast>166</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>bookpart</type>
    <publisherName>Verlag der Technischen Universität Graz</publisherName>
    <publisherPlace>Graz</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Untersuchung der Gemischbildung von Gasmotoren mit Hilfe laseroptischer Messverfahren</title>
    <parentTitle language="deu">Der Arbeitsprozess des Verbrennungsmotors (10. Tagung)</parentTitle>
    <author>Thomas Blotevogel</author>
    <author>Jürgen Goldlücke</author>
    <author>Jan Egermann</author>
    <author>Alfred Leipertz</author>
    <author>Matthias Hartmann</author>
    <author>Hermann Rottengruber</author>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="Autoren" number="blotevogel">Thomas Blotevogel</collection>
  </doc>
  <doc>
    <id>788</id>
    <completedYear/>
    <publishedYear>2007</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>256</pageFirst>
    <pageLast>260</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>117</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Neuartige eutektische Metall-Kohlenstoff-Hochtemperaturfixpunkte für die Thermometrie</title>
    <parentTitle language="deu">PTB Mitteilungen</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV035078972</identifier>
    <author>Jürgen Hartmann</author>
    <author>F. Edler</author>
    <author>Klaus Anhalt</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>778</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>207</pageFirst>
    <pageLast>212</pageLast>
    <pageNumber/>
    <edition/>
    <issue>46</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">The Spectral Photon Flux of the Radiometric Calibration Spectral Source for the NIRSpec Instrument of the James Webb Space Telescope</title>
    <parentTitle language="eng">Metrologia</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV012573233</identifier>
    <author>Jürgen Hartmann</author>
    <author>Dieter Richard Taubert</author>
    <author>C. Monte</author>
    <author>B. Gutschwager</author>
    <author>C. Baltruschat</author>
    <author>Jörg Hollandt</author>
    <author>D. Kochems</author>
    <author>C. Küchel</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>791</id>
    <completedYear/>
    <publishedYear>2006</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>03003</issue>
    <volume>43</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Bilateral comparison of the NRC and PTB local realizations of the ITS-90 between the silver point and 1700 °C using vacuum tungsten strip lamps as transfer standards</title>
    <parentTitle language="eng">Metrologia</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV012573233</identifier>
    <author>Jürgen Hartmann</author>
    <author>R. Thomas</author>
    <author>K.D. Hill</author>
    <author>A.G. Steele</author>
    <author>C.K. Ma</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>795</id>
    <completedYear/>
    <publishedYear>2003</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>35</pageFirst>
    <pageLast>38</pageLast>
    <pageNumber/>
    <edition/>
    <issue>40</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB</title>
    <parentTitle language="eng">Metrologia</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV012573233</identifier>
    <author>Jürgen Hartmann</author>
    <author>R. Friedrich</author>
    <author>Dieter Richard Taubert</author>
    <author>Jörg Hollandt</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>781</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>192</pageFirst>
    <pageLast>202</pageLast>
    <pageNumber/>
    <edition/>
    <issue>30</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">New PTB Set-up for the absolute calibration of the spectral responsivity of radiation thermometers</title>
    <parentTitle language="eng">International Journal of Thermophysics</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV013298193</identifier>
    <author>Jürgen Hartmann</author>
    <author>Klaus Anhalt</author>
    <author>A. Zelenjuk</author>
    <author>Dieter Richard Taubert</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>794</id>
    <completedYear/>
    <publishedYear>2005</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>383</pageFirst>
    <pageLast>388</pageLast>
    <pageNumber/>
    <edition/>
    <issue>42</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Decreasing dependence of the calibration of the tungsten strip lamp on the temperature of the lamp base with increasing filament length</title>
    <parentTitle language="eng">Metrologia</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV012573233</identifier>
    <author>Jürgen Hartmann</author>
    <author>C.K. Ma</author>
    <author>C. Gibson</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>782</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>969</pageFirst>
    <pageLast>983</pageLast>
    <pageNumber/>
    <edition/>
    <issue>29</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Large and small aperture Fixed-point cells of Cu, Pt-C, and Re-C</title>
    <parentTitle language="eng">International Journal of Thermophysics</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV013298193</identifier>
    <author>Jürgen Hartmann</author>
    <author>Klaus Anhalt</author>
    <author>Y. Wang</author>
    <author>Y. Yamada</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>783</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1052</pageFirst>
    <pageLast>1065</pageLast>
    <pageNumber/>
    <edition/>
    <issue>29</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Radiation thermometry towards the triple point of water?</title>
    <parentTitle language="eng">International Journal of Thermophysics</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV013298193</identifier>
    <author>Jürgen Hartmann</author>
    <author>L. Werner</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>790</id>
    <completedYear/>
    <publishedYear>2006</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>8121</pageFirst>
    <pageLast>8126</pageLast>
    <pageNumber/>
    <edition/>
    <issue>18</issue>
    <volume>14</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Correct consideration of the index of refraction using blackbody radiation</title>
    <parentTitle language="eng">Optics Express</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV013253264</identifier>
    <author>Jürgen Hartmann</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>796</id>
    <completedYear/>
    <publishedYear>2001</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1678</pageFirst>
    <pageLast>1682</pageLast>
    <pageNumber/>
    <edition/>
    <issue>12</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Advanced comparator method for measuring ultra small aperture areas</title>
    <parentTitle language="eng">Meas.Sci.Techn.</parentTitle>
    <author>Jürgen Hartmann</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>784</id>
    <completedYear/>
    <publishedYear>2008</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>325</pageFirst>
    <pageLast>329</pageLast>
    <pageNumber/>
    <edition/>
    <issue>45</issue>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Construction and validation of a platinum-carbon eutectic fixed-point</title>
    <parentTitle language="eng">Metrologia</parentTitle>
    <identifier type="url">http://permalink.bibkatalog.de/BV012573233</identifier>
    <author>Jürgen Hartmann</author>
    <author>D. Lowe</author>
    <author>Klaus Anhalt</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="Autoren" number="hartmann">Jürgen Hartmann</collection>
  </doc>
  <doc>
    <id>1934</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>684</pageFirst>
    <pageLast>689</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>98</volume>
    <type>article</type>
    <publisherName>Elsevir</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>2021-09-20</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Reducing Lifecycle Costs due to Profile Scanning of the Powder Bed in Metal Printing</title>
    <abstract language="eng">First time right is one major goal in powder based 3D metal printing. Reaching this goal is driven by reducing life cycle costs for quality measures, to minimize scrap rate and to increase productivity under optimal resource efficiency. Therefore, monitoring the state of the powder bed for each printed layer is state of the art in selective laser melting. In the most modern approaches the quality monitoring is done by computer vision systems working with an interference on trained neural networks with images taken after exposure and after recoating. There are two drawbacks of this monitoring method: First, the sensor signals - the image of the powder bed - give no direct height information. Second, the application of this method needs to be trained and labeled with reference images for several cases. The novel approach presented in this paper uses a laser line scanner attached to the recoating machine. With this new concept, a direct threshold measure can be applied during the recoating process to detect deviations in height level without prior knowledge. The evaluation can be done online during recoating and feedback to the controller to monitor each individual layer. Hence, in case of deviations the location in the printing plane is an inherent measurement and will be used to decide which severity of error is reported. The signal is used to control the process, either by starting the recoating process again or stopping the printing process. With this approach, the sources of error for each layer can be evaluated with deep information to evaluate the cause of the error. This allows a reduction of failure in the future, which saves material costs, reduces running time of the machine life cycle phase in serial production and results in less rework for manufactured parts. Also a shorter throughput time per print job results, which means that the employee can spent more time to other print jobs and making efficient use of the employee’s work force. In summary, this novel approach will not only reduce material costs but also operating costs and thus optimize the entire life cycle cost structure. The paper presents a first feasibility and application of the described approach for test workpieces in comparison to conventional monitoring systems on an EOS M290 machine.</abstract>
    <parentTitle language="eng">Procedia CIRP 98</parentTitle>
    <identifier type="url">10.1016/j.procir.2021.01.175</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="review.accepted_by">2</enrichment>
    <author>Kira-Kristin Wehnert</author>
    <author>Dennis Ochs</author>
    <author>Jan Schmitt</author>
    <author>Jürgen Hartmann</author>
    <author>Andreas Schiffler</author>
    <collection role="institutes" number="fang">Fakultät für angewandte Natur- und Geisteswissenschaften</collection>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <collection role="institutes" number="fwi">Fakultät Wirtschaftsingenieurwesen</collection>
    <collection role="Regensburger_Klassifikation" number="U">Physik</collection>
    <collection role="ddc" number="671">Metallverarbeitung und Rohprodukte aus Metall</collection>
    <collection role="institutes" number="idee">Institut Digital Engineering (IDEE)</collection>
    <thesisPublisher>Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt</thesisPublisher>
  </doc>
  <doc>
    <id>2466</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>44</pageFirst>
    <pageLast>48</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>2023</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Inter‑laboratory Comparison on Thermal Diffusivity Measurements by the Laser Flash Method at Ultra‑high Temperature</title>
    <abstract language="eng">thermal diffusivity measurements by the laser flash method in the temperature range&#13;
from 23 °C to 3000 °C. The main objective was to assess the variability and coherency&#13;
of thermal diffusivity measurements performed at ultra-high temperatures at&#13;
the European level. Three refractory materials (molybdenum, tungsten and isotropic&#13;
graphite IG210) were selected for this inter-laboratory comparison, due to their high&#13;
melting point. The disk-shaped specimens needed were machined from the same&#13;
blocks of materials in order to reduce any potential scattering of results between&#13;
participants due to inhomogeneity effects.&#13;
The homogeneity of the sets of specimens was studied by the pilot laboratory (LNE)&#13;
before launching the comparison process. Thermal diffusivity measurements were&#13;
then carried out by the seven participants on the three materials during two successive&#13;
thermal cycles up to the maximum temperatures that can be reached by the&#13;
devices used. The analysis of results showed a good agreement between the participants&#13;
for temperatures above 400 °C, with relative deviations within the uncertainties&#13;
of measurement and lower than ± 4 % for molybdenum, ± 5 % for isotropic&#13;
graphite and ± 9 % for tungsten.</abstract>
    <parentTitle language="eng">International Journal of Thermophysics</parentTitle>
    <identifier type="url">https://doi.org/10.1007/s10765-023-03159-5</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">true</enrichment>
    <author>Bruno Hay</author>
    <author>Oliver Beaumont</author>
    <author>Nora Lambeng</author>
    <author>Michel Cataldi</author>
    <author>Christophe Lorrette</author>
    <author>Kevin Knopp</author>
    <author>Jürgen Hartmann</author>
    <author>Fabia Beckstein</author>
    <author>Dorothea Stobitzer</author>
    <author>Nenad Milošević</author>
    <author>Nenad Stepanic</author>
    <author>Jiyu Wu</author>
    <author>Petra Mildeova</author>
    <collection role="institutes" number="fe">Fakultät Elektrotechnik</collection>
    <thesisPublisher>Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt</thesisPublisher>
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    <publishedYear>2025</publishedYear>
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    <language>eng</language>
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    <edition/>
    <issue>58</issue>
    <volume>46</volume>
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    <title language="eng">Passive Radiative Cooling Materials with Special Focus on the Reduction of Urban Heat Island Effect: A Current Summarized Classification of Need, Approaches and Characterization Methods</title>
    <abstract language="eng">Rapidly rising global temperatures and the intensification of the urban heat island (UHI) effect necessitate new, energy-efficient solutions to mitigate heat stress in cities. Passive radiative cooling (PRC) offers a highly promising, low-energy pathway to achieve sub-ambient temperatures by reflecting incoming solar radiation while emitting long-wave infrared radiation through the atmospheric infrared window. This review summarizes key aspects of PRC and its role in reducing UHI impacts. Furthermore the fundamental physics of heat transfer and radiative heat exchange, including the materials properties such as solar reflectance and thermal emissivity which are correlated with the figures of merit, temperature drop below ambient temperature and cooling power. A comprehensive classification of current PRC materials is presented based on both structural architectures and physical effects. Additionally an overview on measurement techniques are employed to determine the performance of PRC materials, focusing on the key performance indicators. For this purpose in-field as wells as laboratory measurement techniques are introduced and opportunities in standardizing testing protocols are highlighted. Finally, future research directions are outlined, focusing on novel material development, theoretical advancements, scalable fabrication processes, and integration strategies within urban infrastructures. These innovations are important for enhancing building energy efficiency, reducing urban heat stress, and promoting sustainable urban development in the face of climate change.</abstract>
    <parentTitle language="eng">International Journal of Thermophysics</parentTitle>
    <identifier type="doi">10.1007/s10765-025-03529-1</identifier>
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    <author>Jochen Manara</author>
    <author>Jürgen Hartmann</author>
    <author>Fabian Kerwagen</author>
    <author>Christoph Maak</author>
    <author>Albert Muscio</author>
    <author>Heiko Paeth</author>
    <author>Hans-Peter Ebert</author>
    <collection role="institutes" number="insys">Institut für Sustainable Energy Systems (INSYS)</collection>
    <thesisPublisher>Technische Hochschule Würzburg-Schweinfurt</thesisPublisher>
  </doc>
  <doc>
    <id>4334</id>
    <completedYear/>
    <publishedYear>2004</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>205</pageFirst>
    <pageLast>229</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>bookpart</type>
    <publisherName>expert verlag</publisherName>
    <publisherPlace>Renningen</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
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    <title language="deu">Gemischbildungsuntersuchung in Gasmotoren mittels optischer Messverfahren, speziell in Wasserstoffmotoren</title>
    <abstract language="eng">Planar laser-induced fluorescence (PLIF) has been successfully used for the investigation of the mixture formation process in hydrogen engines for passenger cars. Detailed information has been obtained about process development (qualitative measurement) and on fuel/air-ratio (quantitative measurement) inside the combustion chamber. These results can be used for further optimization of mixture formation and combustion process concerning emissions and fuel consumption. The measurement technique used is not only limited to hydrogen or to passenger car engines, but can also be applied to other fuel gases like natural gas or to other engine sizes like bus engines. The main topic of this paper is the experimental verification of the procedure which was executed by simultaneous PLIF and Raman scattering measurements. By Raman scattering the fuel/air-ratio can directly be determined from direct concentration measurements of the different gas species. The fuel/air-ratios determined by PLIF and Raman measurements are in good agreement indicating that a quantitative fuel/air-ratio measurement during the mixture formation process of gas and hydrogen engines is possible by PLIF. This fact is also confirmed by other measurements, e.g., global fuel/air-ratio calculated from measured intake air and fuel gas flow.</abstract>
    <parentTitle language="deu">Gasfahrzeuge</parentTitle>
    <identifier type="isbn">3816924395</identifier>
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    <author>Thomas Blotevogel</author>
    <author>Jürgen Goldlücke</author>
    <author>Jan Egermann</author>
    <author>Alfred Leipertz</author>
    <author>Matthias Hartmann</author>
    <author>Martin Schenk</author>
    <author>Martin Berckmüller</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Wasserstoff Gasmotor Laser Optische Messtechnik</value>
    </subject>
    <collection role="institutes" number="fm">Fakultät Maschinenbau</collection>
    <thesisPublisher>Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt</thesisPublisher>
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    <id>6324</id>
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    <publishedYear>2024</publishedYear>
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    <language>eng</language>
    <pageFirst>2400039</pageFirst>
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    <pageNumber/>
    <edition/>
    <issue>6</issue>
    <volume>33</volume>
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    <belongsToBibliography>1</belongsToBibliography>
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    <title language="eng">Time–Temperature-Transformation (TTT) Cure Diagram of an Epoxy–Amine System</title>
    <parentTitle language="eng">Macromolecular Theory and Simulations</parentTitle>
    <identifier type="url">https://doi.org/10.1002/mats.202400039</identifier>
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    <author>Claire Strasser</author>
    <author>Elena Moukhina</author>
    <author>Jürgen Hartmann</author>
    <collection role="institutes" number="insys">Institut für Sustainable Energy Systems (INSYS)</collection>
    <thesisPublisher>Technische Hochschule Würzburg-Schweinfurt</thesisPublisher>
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