The Use of Quality Management Standards in Trustworthy Digital Archives

Quality management is an essential part in creating a trustworthy digital archive. The German network of expertise in Digital long-term preservation (nestor), in cooperation with the German Institute for Standards (DIN), has undertaken a small study to analyse systematically the relevance and usage of quality management standards for long-term preservation and to filter out the specific standardisation need for digital archives. This paper summarises the results of the study. It gives an overview on the differences in understanding the task “quality management” within different organisations and how they carry out appropriate measures, such as documentation, transparency, adequacy, and measureability in order to demonstrate the trustworthiness of their digital archive

The Use of Quality Management Standards in Trustworthy Digital Archives

Quality management is one of the essential parts to become a trustworthy digital archive. The German network of expertise in Digital long-term preservation (nestor), in cooperation with the German Institute for Standards (DIN) has undertaken a small study in order to systematically analyse the relevance und usage of quality management standards for long-term preservation and to filter out the specific standardisation need for digital archives. This paper summarises the first results of the study. It gives a first overview on the differences in understanding the task “quality management” amongst different organisations and how they carry out appropriate measures like documentation, transparency, adequacy, and measureability in order to demonstrate the trustworthiness of their digital archive.Peer Reviewe

Hygiene considerations during the collection, storage and processing of source-separated urine into a marketable fertilizer

Laboratory and field studies along with inactivation data from the literature are used to model bacteria inactivation during urine storage and struvite production. The model is used to evaluate urine storage and struvite drying under the fluctuating temperature and relative humidity. Recommendations are made to enhance microbial inactivation during urine storage and struvite production in low-resource field settings and to promote the safety of using urine-derived fertilizers

The Use of Quality Management Standards in Trustworthy Digital Archives: Paper - iPRES 2008 - London

Quality management is one of the essential parts to become a trustworthy digital archive. The German network of expertise in Digital long-term preservation (nestor), in cooperation with the German Institute for Standards (DIN) has undertaken a small study in order to systematically analyse the relevance und usage of quality management standards for long-term preservation and to filter out the specific standardisation need for digital archives. This paper summarises the first results of the study. It gives a first overview on the differences in understanding the task “quality management” amongst different organisations and how they carry out appropriate measures like documentation, transparency, adequacy, and measureability in order to demonstrate the trustworthiness of their digital archive

Towards sustainable sanitation: Mitigating microbial health risks in the production of urine-derived fertilizers

To identify and address health and safety challenges, first, I conducted a screening of fecal pathogens in source-separated urine. The pathogen inactivation performance of two innovative fertilizer production technologies was then evaluated in laboratory and field conditions. An in-depth assessment of the main mechanisms leading to pathogen inactivation during fertilizer production suggested nuanced adjustments in the treatment to yield more hygienic outcomes. Finally, occupational exposure and risks of infection during fertilizer production were evaluated using innovative exposure analysis techniques and modeling. Quantitatively identifying risks in this way will allow development of strategies to promote innovation and overcome barriers to safe and sustainable sanitation

Bacteria Inactivation during the Drying of Struvite Fertilizers Produced from Stored Urine

Human urine can be processed into market-attractive fertilizers like struvite; however, concerns regarding the microbial safety of such products remain. The present study evaluated the inactivation of in situ heterotrophs, total bacteria as observed by flow cytometry, and inoculated <i>Enterococcus</i> spp. and <i>Salmonella typhimurium</i> during the drying of struvite under controlled temperature (from 5 to 35 °C) and relative humidity (approximately 40 and 80%) as well as dynamic field conditions. Bacteria accumulated in the struvite cake during struvite filtration. Despite the use of sublethal temperatures, all bacteria types were subsequently inactivated to some degree during struvite drying, and the inactivation typically increased with increasing drying temperature for a given relative humidity. Heterotrophic bacteria inactivation mirrored the trend in total bacteria during struvite drying. A linear relationship was observed between inactivation and sample moisture content. However, bacteria survivor curves were typically nonlinear when struvite was dried at low relative humidity, indicating bacterial persistence. Weibull model survivor curve fits indicated that a shift in the mechanism of inactivation may occur with changing humidity. For increased efficiency of bacterial inactivation during the production of struvite, initial heating under moist conditions is recommended followed by desiccation