TY - CHAP A1 - Peter, Steffen A1 - Vater, Frank A1 - Langendörfer, Peter T1 - Sicherheits-Engineering am Beispiel von drahtlos angebundenen Sensor/Aktor-Systemen in der Automatisierungstechnik Y1 - 2009 ER - TY - CHAP A1 - Vater, Frank A1 - Peter, Steffen A1 - Langendörfer, Peter T1 - An On-Chip Security Monitoring Solution for System Clock for Low Cost Devices Y1 - 2008 UR - https://www.researchgate.net/publication/242086470_An_On-chip_Security_Monitoring_Solution_For_System_Clock_For_Low_Cost_Devices ER - TY - PAT A1 - Peter, Steffen A1 - Methfessel, Michael A1 - Vater, Frank A1 - Langendörfer, Peter T1 - Reduktion von Seiten-Kanal-Informationen durch interagierende Krypto-Blocks Y1 - 2008 ER - TY - PAT A1 - Peter, Steffen A1 - Methfessel, Michael A1 - Langendörfer, Peter A1 - Vater, Frank T1 - Reduktion von Seiten-Kanal-Informationen durch interagierende Krypto-Blocks Y1 - 2007 ER - TY - GEN A1 - Allertz, Peter J. A1 - Berger, Steffen A1 - Sellenk, Grit A1 - Dittmer, Christin A1 - Dietze, Marco A1 - Stahmann, Klaus-Peter A1 - Salchert, Katrin T1 - Approaching Immobilization of Enzymes onto Open Porous Basotect® T2 - Catalysts N2 - For the first time, commercial macroporous melamine formaldehyde foam Basotect® (BT) was used as a basic carrier material for both adsorptive and covalent enzyme immobilization. In order to access inherent amino groups, the Basotect® surface was pretreated with hydrochloric acid. The resulting material revealed 6 nmol of superficial amino groups per milligram Basotect®. Different optimized strategies for tethering the laccase from Trametes versicolor and the lipase from Thermomyces lanuginosus onto the pre-treated Basotect® surface were studied. Particularly, for covalent immobilization, two different strategies were pursued: lipase was tethered via a cross-linking method using 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide, and laccase was bound after functionalizing Basotect® with hydrophilic copolymer poly(ethylene-alt-maleic anhydride) (PEMA). Prior to laccase immobilization, the PEMA coating of Basotect® was verified by ATR-FTIR analysis. Subsequent quantification of available high-reactive PEMA anhydride moieties revealed an amount of 1028 ± 73 nmol per mg Basotect®. The surface-bound enzyme amounts were quantified as 4.1–5.8 μg per mg Basotect®. A theoretical surface-covered enzyme mass for the ideal case that an enzyme monolayer was immobilized onto the Basotect® surface was calculated and compared to the amount of adsorptive and covalently bound enzymes before and after treatment with SDS. Furthermore, the enzyme activities were determined for the different immobilization approaches, and the stability during storage over time and against sodium dodecyl sulfate treatment was monitored. Additionally, PEMA-BT-bound laccase was tested for the elimination of anthropogenic micropollutant bisphenol A from contaminated water in a cost-effective and environmentally-friendly way and resulted in a degradation rate higher than 80%. KW - Basotect® KW - Enzyme immobilization KW - Laccase KW - Lipase KW - PEMA KW - EDC KW - Bisphenol A Y1 - 2017 U6 - https://doi.org/10.3390/catal7120359 SN - 2073-4344 VL - 7 IS - 12 ER - TY - PAT A1 - Vater, Frank A1 - Jagdhold, Ulrich A1 - Peter, Steffen A1 - Langendörfer, Peter T1 - Taktüberwachungsschaltung Y1 - 2007 ER - TY - PAT A1 - Vater, Frank A1 - Peter, Steffen A1 - Jagdhold, Ulrich A1 - Langendörfer, Peter T1 - Erweiterter Clock Watchdog Y1 - 2007 ER - TY - PAT A1 - Vater, Frank A1 - Peter, Steffen A1 - Jagdhold, Ulrich A1 - Langendörfer, Peter T1 - Verschlüsselungseinheit Y1 - 2006 UR - https://patents.google.com/patent/DE102006062649A1/de ER - TY - GEN A1 - Langendörfer, Peter A1 - Piotrowski, Krzysztof A1 - Peter, Steffen A1 - Lehmann, Martin T1 - Crosslayer Firewall Interaction as a Means to Provide Effective and Efficient Protection at Mobile Devices Y1 - 2007 ER - TY - JOUR A1 - Vater, Frank A1 - Peter, Steffen A1 - Langendörfer, Peter T1 - Combinatorial Logic Circuitry as Means to Protect Low Cost Devices Against Side Channel Attacks Y1 - 2007 UR - https://link.springer.com/chapter/10.1007/978-3-540-72354-7_20 ER -