Frankfurt (Main), Univ., Diss., 2002.

Proefschrift Rijksuniversiteit Groningen. / Auteursnaam op omslag: Stan A.J. van den Broek.

Proefschr. Rijksuniversiteit Groningen. / Met lit. opg.-Met samenvatting in het Nederlands.

Universiẗat, Diss., 2000--Giessen.

Proefschrift Rijksuniversiteit Groningen. / Met lit.opg. - Met samenvatting in het Nederlands.

Lentil, black soybean and black turtle have been proved to be phenolic-rich legume varieties and possess higher antioxidant activity. In this study, the three legume varieties were subjected to broad range of processing conditions, and the effects on phenolic contents, antioxidant capacity and individual phenolic acid were investigated. The results showed all processing methods could decrease the total phenolic content, and steaming processing could preserve more phenolics and antioxidant activity than boiling processing. Phenolic acids mainly existed in nonree form and the content of individual free phenolic acids was dependent on the thermal process applied. When in vitro gastrointestinal simulation digestion was applied to the thermally processed beans, it was found that the properties of hydrolysates including total phenolic content, antioxidant activity, degree of hydrolysis, and ACE (angiotensin converting enzyme) inhibitory activity were all affected by thermal conditions employed. There was a weak correlation between the degree of hydrolysis and ACE inhibition. In the current study, for each legume variety, cooking conditions which yielded the highest phenolic content and antioxidant activity were selected. Phenolics of the raw and cooked seeds from each legume variety were extracted, semi-purified (XAD-7) and further fractionated (Sephadex LH-20). The results showed cooking had great effects on yield, phenolic content, antioxidant capacity, and individual phenolic compounds. The phenolic content and antioxidant activity could be enriched tremendously in the semi-purified extracts and some fractions. Some phenolic compounds which were absent in raw material could be found after cooking in the fractions and some phenolic compounds which were present in raw material disappeared after cooking. Among crude phenolic extracts, semi-purified extracts and fractions, only crude extracts showed ACE inhibition. In addition, protein isolates from the legumes varieties were treated with in vitro GI (gastrointestinal) digestion and then separated by ultrafiltration, DEAE anion exchange chromatography and gel permeation chromatography. After ultrafiltration, the lowest molecular weight fraction (< 3kD) had the highest ACE inhibition and the three legume varieties showed different peptide distribution, ACE inhibition, and antioxidant profile in the hydrolysates. Gel filtration chromatography further revealed that the most potent ACE inhibitors were peptides of 2-5 amino acids long.

No description available.

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IoT-devices are becoming more advanced and powerful than ever, and the applicationpotential is increasing rapidly. It is starting to become normal to have IoT-devices takingover mundane jobs such as controlling the climate at home, or monitoring e.g the water us-age of a household. These devices are usually constrained to be as cheap and primitive asthe task allows. Most of the time, they are only used to send collected data which only re-quires a one way secure channel. However, in order to apply updates or manage the deviceremotely, the communication has to be secured both ways. There are multiple suggestionson how a two way secure channel can be established while still operating on a constraineddevice. Each security specializes in its own area e.g privacy, scalability, or simplicity. Thispaper will describe how to implement the ACE-DTLS framework and analyze the perfor-mance with respect to energy consumption and security. While ACE-DTLS is quite simpleto implement without having to understand the complex math of a key exchange, it comeswith the cost of a high overhead in order to establish a secure two way connection. It mightnot be the best suited framework for small amount of data transfers available.

This thesis research reports on the Adult Community Education (ACE) sector in the Australian State of Victoria. Although it concentrates on Moreland Adult Education Assoc. (MAE) as a case study, it places MAE in the wider context of ACE in the local area of the Northern Metropolitan region of Melbourne. Although periodically referred to as the 'fourth educational sector' and funded by the same government departments as mainstream post-secondary sectors, ACE has always had a low profile and quasi-educational status due to the extreme variety of its venues, courses and locations, making it difficult to define and market as an entity. This study uses a range of qualitative methodologies suited to historical, educational research to provide a framework based around the initial guiding questions: 'Is ACE becoming TAFE?' and 'Who uses ACE and Why?' MAE was used as a case study because it was created by its local community in 1982 after which it expanded and developed from one-to-one pairs of volunteer tutors and literacy students to being a nationally Registered Training Organisation delivering accredited courses up to Diploma level. This expansion placed great strain on the infrastructure and personnel of the organisation, particularly during the main period of this research (1994 to 2004). Beginning with a review of the ACE sector, the thesis then describes the northern region of the Melbourne suburbs by using the data gained from a survey questionnaire. Further narrowing the research focus, the thesis analyses the development of the organisation over the ten year study period. The second half of the thesis emphasises the people of MAE through 18 interviews by analysing their opinions, life-experiences and perceptions of change to create a sense of their connectedness to the local community and MAE. The primary aims of this thesis are to document an example of the development of an ACE centre and how it managed change during a ten year period. It records a sense of how and why people engaged in the sector and some of their lived-experiences and their responses to changes. Data analysis results in three sets of findings and propositions in the categories of sectoral, organisational and personal. These key findings involve a range of externally applied pressures being brought to bear on both ACE and MAE. This is counteracted by individual resistance to change, creating a tension which threatens MAE's long-term sustainability.