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Paper des Monats
- ja (1)
Diese Studie soll aufzeigen, wie sich das Akkreditierungswesen in Deutschland über einen Zeitraum von mehr als 25 Jahren entwickelt hat. Die Bundesanstalt für Materialforschung und -prüfung (BAM) und der Deutsche Akkreditierungsrat DAR haben bei dieser Entwicklung wichtige Beiträge geleistet.
Leitmotiv dieser Studie ist eine These des Philosophen Udo Marquard, zitiert im Vorwort der BAM Chronik 1871-1996, „Die neue Welt kann nicht sein ohne die alten Fertigkeiten – Zukunft braucht Herkunft“.
Die Erfahrungen bei der Entwicklung des deutschen Akkreditierungssystems sollen zusammengefasst werden, um Schlussfolgerungen für die Zukunft ableiten zu können, da bisher keine zusammenfassende und überblicksmäßige Darstellung des gesamten Entwicklungsprozesses vorhanden ist.
Ziele dieser Studie sind die Darstellungen
— der Beiträge des deutschen Akkreditierungssystems zur gegenseitigen Anerkennung von Zertifikaten und Prüfberichten in der EU zur Mitgestaltung des gemeinsamen Marktes der EU und zum Abbau internationaler tarifärer Handelshemmnisse,
- der Komplexität von Akkreditierung und Konformitätsbewertungsvorgängen in einzelnen Problemkreisen,
- der Entwicklung des deutschen Akkreditierungssystems von den Anfängen bis zur Tätigkeitsaufnahme der Deutschen Akkreditierungsstelle (DAkkS GmbH) am 1. Januar 2010,
- der Rolle des Deutschen Akkreditierungsrates (DAR) (04.03.1991 bis 31.12.2009) anhand wichtiger Eckdaten und Hauptergebnisse aus seinem Präsidium und den vier Ausschüssen, ATF DAR-Ausschuss für Technische Fragen AIZ DAR-Ausschuss für Internationale Zusammenarbeit AZ DAR-Ausschuss für Zusammenarbeit gesetzlich geregelter und gesetzlich nicht geregelter Bereich ABT DAR-Ausschuss für Begutachtertraining
- der Wege zum Finden eines nationalen Konsenses mit mehreren privaten und staatlichen Akkreditierungsstellen, um eine einheitliche Außenvertretung in internationalen Gremien zu gewährleisten,
- der ständigen Bemühungen um enge Zusammenarbeit zwischen gesetzlich nicht geregeltem und gesetzlich geregeltem Bereich,
- der Aktivitäten und Ergebnisse, um zu einem einheitlichen deutschen Akkreditierungssystem zu gelangen, der Rolle der BAM
im deutschen Akkreditierungswesen, der Entstehung des BAM-Akkreditierungssystems (BAS) und seine Überleitung in das Deutsche
Akkreditierungssystem Prüfwesen (DAP),
- der Führung der Geschäftsstelle des DAR und des Akkreditierungsbeirats (AKB) des Bundesministerium für Wirtschaft und Energie (BMWi) (2006 bis 2009 und ab 2010)
- der Tätigkeiten des BAM-Evaluierungsausschusses.
The energy demand of private households contributes globally to 36.5% of the total CO2 emissions. To analyze the emissions reduction potential, we conducted a comparative life cycle assessment of a proton exchange membrane fuel cell in a residential application and a conventional system with a stand-alone gas condensing boiler and electricity from a grid mix. The period under review was referred to as the service life of the PEMFC and is assumed to be 10 years (83,038 h of PEMFC). The applicability of this in a single-family house built between 1991 and 2000 under German climatic conditions was investigated. The functional unit is set to the thermal energy demand of 16,244 kWh/a and electricity demand of 4919 kWh/a of a single-family house. The impact assessment method “CML 2001–August 2016” was used in this investigation. The manufacturing phase of the proton exchange membrane fuel cell showed disadvantages, whereby the use phase had significant advantages in most of the environmental impact categories as compared to the conventional energy supply system. Considering the whole life cycle, the advantages from the use phase could outperform the disadvantages from the manufacturing phase in most of the impact categories, except for ADP elements and TETP.
Webcrawler
(2019)
Outer membrane lipopolysaccharides (LPS) play a crucial role in determining attachment behavior and pathogenicity of bacteria. The aim of this study was to develop a simple procedure for anchoring bacterial lipopolysaccharides to polystyrene (PS) microparticles as a model system for in situ attachment studies. By using a swellcapture methodology, commercially available LPS of Pseudomonas aeruginosa (strain ATCC 27316 serotype 10.22) was anchored onto PS microparticles in a proof-of-concept study. A detailed chemical and morphological characterization has proven the success of LPS incorporation. It was shown that the coverage and structure of the LPS film was concentration dependent. The procedure can easily be adapted to LPS of other bacterial strains to generate a synthetic model toolkit for attachment studies.
The European Commission has recently announced two guiding principles for EU product policy: First, product policy shall ensure that the performance of front-runner products in terms of sustainability becomes the norm, and second, the effectiveness of the current Ecodesign legislative framework is going to be significantly improved. Within this paper, already existing front-runner approaches and recent and ongoing product policy-making processes were reviewed. Based on the results, an EU front-runner approach is outlined. The presented approach (i) refers to performance levels of the best products already available on the market, (ii) aggregates information in existing databases, and (iii) works semi-automated. Together, all three attributes have a high potential to facilitate and accelerate the specification of appropriate minimum requirements for products at the EU level. This way, EU policymakers can deliver on the core objectives of the Ecodesign legislative framework much better. The basic mechanism and its legal entrenchment of the approach are illustrated for the energy efficiency of energy-related products. In addition, the Front-Runner Approach can be applied to any product group in the scope of the upcoming Ecodesign for Sustainable Products Regulation and to a wide range of product-related minimum requirements, such as durability, reparability, or recycled content. The study’s objective is to suggest a tailor-made and dynamic approach to keep the EU product legislation up to date using innovative technology based on the investigation of current regulations and identify the gap. Experiences from three international case studies suggest that a front-runner approach to setting energy-performance standards can drive innovation and reduce energy consumption via promoting energy-efficient products; transparency about available products is one of the key factors and can be established by a database. The EU front-runner approach comprises extending the existing energy label database (or making use of the digital product passport) and introducing a legislative procedure that triggers changes in the energy efficiency requirements in the specific EU regulations if the database shows that a certain threshold value is reached. Challenges such as limited EU staff capacities and opportunities such as increased dynamic are discussed.