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21.
Dimitra P. Houhoula Vassiliki Oreopoulou Constantina Tzia 《Journal of the American Oil Chemists' Society》2002,79(2):133-137
The thermooxidative alterations of cottonseed oil during frying of potato chips without oil turnover, in a temperature range
of 155–195°C, were studied. The results showed that the content of polar compounds, conjugated dienes, conjugated trienes,
and p-anisidine value (p-AV) increased linearly with the time of frying at a rate depending on temperature. The rate constants showed a significant
but low increase with temperature, except for the rate constant of conjugated trienes that was not correlated to frying temperature.
The alterations induced by heating the oil were also measured and compared with those observed in frying at the same temperature.
The major difference observed between frying and heating was related to the p-AV increase, which presented a considerably higher rate during heating. The FA content, as a function of process time during
frying at 185°C, showed a significant increase in palmitic acid (C16∶0) and a significant decrease in linoleic acid (C18∶2).
Oleic acid (C18∶1) also showed a small but significant decrease. The same results were obtained for the oil heated at 185°C.
Examination of p-AV or conjugated dienes with polar compounds showed that both p-AV and conjugated dienes had a linear relationship with total polar compounds, with correlation coefficients of 0.946 and
0.862, respectively. 相似文献
22.
Adapting to user's requirements is a key factor for enterprise success. Despite the existence of several approaches that point in this direction, simplifying integration and interoperability among users, suppliers and the enterprise during product lifecycle, is still an open issue. Ontologies have been used in some manufacturing applications and they promise to be a valid approach to model manufacturing resources of enterprises (e.g. machinery and raw material). Nevertheless, in this domain, most of the ontologies have been developed following methodologies based on development from scratch, thus ontologies previously developed have been discarded. Such ontological methodologies tend to hold the interoperability issues in some level. In this paper, a method that integrates ontology reuse with ontology validation and learning is presented. An upper (top-level) ontology for manufacturing was used as a reference to evaluate and to improve specific domain ontology. The evaluation procedure was based on the systemic methodology for ontology learning (SMOL). As a result of the application of SMOL, an ontology entitled Machine of a Process (MOP) was developed. The terminology included in MOP was validated by means of a text mining procedure called Term Frequency–Inverse Document Frequency (TF–IDF) which was carried out on documents from the domain in this study. Competency questions were performed on preexisting domain ontologies and MOP, proving that this new ontology has a performance better than the domain ontologies used as seed. 相似文献
23.
24.
Georgios Doxastakis Maria Papageorgiou Dimitra Mandalou Maria Irakli Evdoxia Papalamprou Alessandra D’Agostina Donatella Resta Giovanna Boschin Anna Arnoldi 《Food chemistry》2007,101(1):57-64
Spaghetti was prepared by replacing semolina with different amounts of lupin protein, in order to increase the protein content. A detailed investigation of the rheological properties of the dough and the cooking quality of pasta was performed in comparison to standard semolina spaghetti. Moreover, the effect of the addition of lupin protein on non-enzymatic browning was evaluated by measuring ε-furoylmethyllysine (furosine) and 5-hydroxymethyl-2-furancarboxaldehyde (HMF), which are considered useful indices of semolina quality and pasta processing conditions. Dried spaghetti fortified with 5% of lupin protein isolate has a colour and rheological features comparable with the semolina sample and also the behaviour during cooking results to be satisfactory. As far as the thermal damage is concerned, the furosine values of fortified spaghetti differ only marginally from standard pasta and the percentage lysine loss is quite small (ranging from 12.1% to 15.7%). 相似文献
25.
Alevizaki Viktoria-Maria Anastasopoulos Markos Tzanakaki Anna Simeonidou Dimitra 《Photonic Network Communications》2020,40(3):209-220
Photonic Network Communications - To address the limitations of current radio access networks (RANs), centralized RANs adopting the concept of flexible splits of the BBU functions between radio... 相似文献
26.
Athanasiadou Georgia E. Tsoulos George V. Zarbouti Dimitra A. Valavanis Ioannis K. 《Wireless Personal Communications》2019,106(2):521-534
Wireless Personal Communications - Service demand in cellular radio networks is generally heterogeneous and non uniform, leading to asymmetrical topologies. This complexity along with the multiple... 相似文献
27.
Fotios I. Gogoulos Anna Antonakopoulou Georgios V. Lioudakis Aziz S. Mousas Dimitra I. Kaklamani Iakovos S. Venieris 《Electronic Markets》2014,24(2):101-112
Business networking has substantially reshaped common enterprise procedures and has paved the way for the development of ground-breaking information sharing patterns and inter-organizational cooperative practices. Yet, critical issues still stand unaddressed; privacy and sensitive information confidentiality implications threaten to diminish the economic and social benefits derived from online collaboration. Nevertheless, privacy preservation refers to a multidimensional and cross-disciplinary subject, accompanied by both legal as well as technical challenges. In this context, this paper describes the design of a privacy-aware decision engine operating within synergistic contexts. Decision making regarding the production of authorizations and information usage rules is founded on a detailed privacy context and the enforcement of a deductive reasoning algorithm. The proposed reasoning process spans two distinct phases, taking into account an a priori perspective of the system while at the same time maintaining responsiveness in dynamic contexts. 相似文献
28.
29.
Nicolas Moussiopoulos Charisios Achillas Christos Vlachokostas Dimitra Spyridi Konstantinos Nikolaou 《Cities》2010
The use of indicators constitutes internationally an important tool for assessing the progress achieved towards sustainable development. Measuring the sustainability in urban areas – which are crucial engines of local socio-economic development, but at the same time present concentration points of environmental decay – is a major challenge for environmental managers and decision-makers. This paper aims at the development and utilisation of a system of indicators as a dynamic tool for the management of environmental, social and economic information in order to evaluate sustainability in urban areas. In this context, guidelines for the system’s development and use are proposed, together with a suggestion for its communication among local stakeholders. An application of this system is demonstrated through a case study using the Greater Thessaloniki Area, Greece, a domain with considerable socio-economic development, which is also encountering significant environmental pressures. 相似文献
30.
Patrick P. Naulleau Christopher N. Anderson Jerrin Chiu Paul Denham Simi George Kenneth A. Goldberg Michael Goldstein Brian Hoef Russ Hudyma Gideon Jones Chawon Koh Bruno La Fontaine Andy Ma Warren Montgomery Dimitra Niakoula Joo-on Park Tom Wallow Stefan Wurm 《Microelectronic Engineering》2009,86(4-6):448-455
Microfield exposure tools continue to play a dominant role in the development of extreme ultraviolet (EUV) resists. Here we present an update on the SEMATECH Berkeley 0.3-NA microfield exposure tool and summarize the latest test results from high-resolution line-space printing. Printing down to 20-nm is presented with large process latitude at 22-nm half-pitch lines. Also presented are line-edge roughness results along with a discussion of the importance of mask contributors to line-edge roughness measured in resist. Finally we briefly describe an upgrade to the tool that will enable EUV resist development at the 16-nm half-pitch node and beyond. (This paper was presented in MNE 2008 conference, <http://www.mne08.org>, <http://www.mne-conf.org>). 相似文献