TY - CONF A1 - Günther, Bernd A1 - Czepluch, Wolf A1 - Mäder, Klaus A1 - Zedler, Steffen T1 - Multiplexer for Attenuation Measurements during POF Durability Testing T2 - International POF Technical Conference 2000 (POF 2000) CY - Cambridge, MA, USA DA - 2000-09-05 KW - POF Durability Testing PY - 2000 SP - 209 EP - 213 PB - Information Gatekeepers Inc. CY - Cambridge, Mass. AN - OPUS4-877 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Czepluch, Wolf A1 - Daum, Werner A1 - Günther, Bernd T1 - Automated long-term transmission measurements of plastic optical fibres (POF) T2 - International Metrology Conference CY - Bucharest, Romania DA - 2001-09-18 PY - 2001 VL - 1 SP - 155 EP - 160 AN - OPUS4-1170 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Bernd A1 - Steckert, Carsten T1 - Messung optischer Kennzahlen von Referenzmaterialien unter Berücksichtigung von ISO 17025 T2 - 5. TITV-Workshop "Trends in der Farb- und Weißmetrik" CY - Greiz, Germany DA - 2003-05-22 PY - 2003 AN - OPUS4-5113 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Bernd A1 - Steckert, Carsten T1 - Sicherheit in Arbeitswelt und Verkehr T2 - Tag der offenen Tür im DIN CY - Berlin, Germany DA - 2006-10-14 PY - 2006 AN - OPUS4-13501 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Günther, Bernd A1 - Otto, Peter A1 - Steckert, Carsten T1 - Optische Messverfahren und Referenzmaterialien T2 - DfwG-Jahrestagung 2005 CY - Berlin, Germany DA - 2005-10-04 PY - 2005 AN - OPUS4-10915 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Noack-Schönmann, Steffi A1 - Spagin, Olga A1 - Gründer, Klaus-Peter A1 - Breithaupt, Mathias A1 - Günther, Achim A1 - Muschik, Bernd A1 - Gorbushina, Anna T1 - Sub-aerial biofilms as blockers of solar radiation: spectral properties as tools to charcterise material-relevant microbial growth N2 - Sub-aerial biofilms (SABs) are ubiquitous microbial communities that develop at the interface between hard surfaces and the atmosphere. Inherent SAB 'core-settlers' include phototrophic algae, cyanobacteria, heterotrophic bacteria and microcolonial fungi (MCF). SABs do not simply cover hard surfaces; they interact with them in myriads of ways and bind to the underlying substrate. Secretion of extracellular mucilage aids adhesion, while organic acids and acidic polysaccharides weather the surface. As protection against solar radiation, many members of the SAB consortia produce shielding pigments while the phototrophic inhabitants are laden with photosynthetic pigments. All absorb light of many wavelengths and in addition, the cells themselves scatter light. Both effects change the spectra of incoming radiation (including wavelengths that are converted to electricity by photovoltaic cells) and decrease its intensity. To quantify these effects on SABs as complex entities of organisms and pigments, we measured the spectral properties of model and natural biofilms transferred to glass. Here we show that SABs growing on solar panels and other substrates scatter incident radiation between 250 nm up to 1800 nm and block up to 70% of its transmission. Model biofilms have the advantage that their microbial components can be 'tuned' to resemble natural ones of different compositions thus providing a novel materials-testing tool. KW - Material-colonising microorganisms KW - Microcolonial fungi KW - Glass biodeterioration KW - Solar panels KW - Biofilm-impaired transmittance of radiation PY - 2014 U6 - https://doi.org/10.1016/j.ibiod.2013.09.020 SN - 0964-8305 VL - 86 SP - 286 EP - 293 PB - Elsevier CY - Barking AN - OPUS4-30128 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Droste, Bernhard A1 - Gogolin, Bernd A1 - Völzke, Holger A1 - Quercetti, Thomas A1 - Günther, Burkhard T1 - Extended drop tests of DCI casks with artificial flaws demonstrating the existing safety margins PY - 1995 SN - 0957-476X VL - 6 IS - 2/3 SP - 177 EP - 182 PB - Nuclear Technology Publ. CY - Ashford, Kent AN - OPUS4-21732 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -