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- 2019 (5) (remove)
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- Acetylcholinesterase (AChE) (1)
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Sinapine is the main secondary metabolite present in rapeseed pomace (RSP) with its concentration being dependent on rapeseed processing, growing conditions, extraction parameters and the country of origin. Here we report, the concentration of sinapine from an extract of defatted RSP harvested in the North East of Scotland. Using liquid chromatography tandem mass spectrometry, the most abundant phenolic compound in the RSP extract was, as expected, sinapine (109.1 mg/g RSP extract). Additionally, sinapic, caffeic, ferulic and syringic acids were identified (0.159–3.91 mg/g RSP extract). Sinapine together with the phenolics at the concentration present in the RSP extract, exhibited ≥50% activity relative to the extract in antioxidant assays. Furthermore, sinapine provided plasmid DNA (pBR322) protection, from 2,2′-azobis(2-amidinopropane) dihydrochloride and inhibited acetylcholinesterase activity by 85%. Molecular docking was utilised to explain the inhibitory activity. RSP can be an excellent source of bioactive compounds for pharmaceuticals, food additive and nutraceutical applications.
In this work we present a new approach for counterfeit protection against remarked, overproduced, and out-of-spec integrated circuits (ICs). Our approach uses identification sequences that are regularly published by the original chip manufacturer and hidden in the electromagnetic (EM) leakage of authentic chips. A portion of the chip area is dedicated to a crypto engine running in stream cipher mode that is initialized with a unique key and initialization vector stored in one-time-programmable antifuse memory. IC identification is carried out in the field, by obtaining EM measurements of deployed ICs and by proving the presence of the genuine identification sequences in the measurements. We evaluate our approach using a proof-of-concept implementation on three FPGA boards by capturing EM leakage of the FPGAs under test at their decoupling capacitors. The results show that the user can carry out IC identification on-site, using standard lab equipment in short amount of time.
Führung
(2019)
Was muss eine Führungskraft können? Jeder Chef und jede Chefin hat sich gegen Konkurrenz durchgesetzt und hohe Fachkompetenz bewiesen. Diese Fähigkeiten haben dabei geholfen aufzusteigen. Doch in der Rolle der Führungskraft sind neue Kompetenzen gefordert: Mitarbeitende müssen motiviert und inspiriert werden, um die beste Leistung zu bringen. Im Kapitel Führung werden deshalb theoretische Ansätze vorgestellt, die unterschiedliche Einflussfaktoren auf den Führungserfolg in den Mittelpunkt stellen. Diese reichen von Persönlichkeitseigenschaften und Verhaltensweisen der Führungskräfte über situative Bedingungen im Arbeitsalltag bis hin zu Interaktionsansätzen. Zudem wird zusätzlich ein Einblick in den Arbeitsalltag von Führungskräften gegeben. Welchen Dilemmata stehen sie gegenüber?
Since power dissipation is becoming a significant issue and requiring more consideration in the early design stage, circuit designers must now be experienced in low-power techniques to enhance designing digital systems. Therefore, when teaching low-power design techniques in electrical and computer engineering education, a tool or a method must be made available that enables students to estimate the power dissipation of their digital circuits during the design process. This contribution presents a novel approach, the low-power design remote laboratory system that has been developed at the Bonn-Rhine-Sieg University of Applied Sciences to estimate the power dissipation of a digital circuit remotely via the internet using physical instruments and providing real data. The design takes place at abstraction level and the real data is measured at the low level from the hardware devices. The low level provides more information, which is required for accurately measured values that are hidden at the high level. The technical performance results on using the remote system show that the students are enabled to implement their digital design and to meet the performance targets of reliability as well as to observe almost all influencing factors on the design’s power dissipation.
