5 research outputs found
A system and method for imaging body areas
No full textThe invention relates to a system for imaging one or more external human body areas comprising a photographic device configured to acquire, store and output an image or images of the one or more body areas. The invention also relates to a method for determining a probable disease state of an external human body area.Delft University of Technolog
De productie van C13- en C14-alkohol door middel van het oxo-proces
No full textDocument uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Het gebruik van fasenleer en thermodynamica bij optimaal procesontwerp van ureumprocessen
No full textIn het eerste deel van deze scriptie worden de verschillende thermodynamische systemen bekeken die in ureumprocessen van belang zijn. Aan het DSM-CO2 stripproces en het Delftse HGR-proces wordt de meeste aandacht besteed. De fasenleer van de systemen NH-CO2, NH3-CO2-H20 en NH3-CO2-H20-ureum wordt bekeken en tevens wordt bekeken waar deze systemen in het proces optreden. Er wordt ook aandacht besteed aan thermodynamische modellen die het fasengedrag beschrijven. Hierbij worden twee modellen onderscheiden: een moleculair model en een onlangs ontwikkeld elektrolietmodel. Het elektrolietmodel was slechts voor één temperatuur en één druk getest. Dit model werd verder getest voor andere temperaturen en drukken waarbij, ondanks verschillende vereenvoudigende vooronderstellingen, toch goede resultaten zijn verkregen. Het computerprogramma voor de berekening van de interactieparameters werd op enkele plaatsen gewijzigd. Voor het Delftse HGR-proces werd een manier aangegeven om het proces te optimaliseren. Er werd hierbij gekeken naar de reactor, de stripper en de condensor. Voor de reactor-optimalisatie werd een nieuwe formule voor de conversie gebruikt. In het laatste onderdeel van de scriptie wordt bekeken hoe de thermodynamische efficiency van een proces kan worden berekend.Applied Science
Profiling research published in the journal of enterprise information management (JEIM)
No full textPurpose – The purpose of this paper is to analyse research published in the Journal of Enterprise Information Management (JEIM) in the last ten years (1999 to 2008).
Design/methodology/approach – Employing a profiling approach, the analysis of the 381 JEIM publications includes examining variables such as the most active authors, geographic diversity, authors' backgrounds, co-author analysis, research methods and keyword analysis.
Findings – All the finding are in relation to the period of analysis (1999 to 2008). (a) Research categorised under descriptive, theoretical and conceptual methods is the most dominant research approach followed by JEIM authors. This is followed by case study research. (b) The largest proportion of contributions came from researchers and practitioners with an information systems background, followed by those with a background in business and computer science and IT. (c) The keyword analysis suggests that ‘information systems’, ‘electronic commerce’, ‘internet’, ‘logistics’, ‘supply chain management’, ‘decision making’, ‘small to medium-sized enterprises’, ‘information management’, ‘outsourcing’, and ‘modelling’ were the most frequently investigated keywords. (d) The paper presents and discusses the findings obtained from the citation analysis that determines the impact of the research published in the JEIM.
Originality/value – The primary value of this paper lies in extending the understanding of the evolution and patterns of IS research. This has been achieved by analysing and synthesising existing JEIM publications
Targeted metagenomics and ecology of globally important uncultured eukaryotic phytoplankton
No full textCuvelier, Marie L. ... et al.-- 6 pages, 4 figures, 1 table, this article contains supporting information online at https://www.pnas.org/content/pnas/suppl/2010/07/27/1001665107.DCSupplemental/pnas.201001665SI.pdf.-- Data deposition: The sequences reported in this paper have been deposited in the Gen-Bank database (accession nos. HM581528–HM581638 and HM565909–HM565914). Other scaffolds with predicted genes from this Whole Genome Shotgun/454 project have been deposited at DNA Data Bank of Japan/European Molecular Biology Laboratory/GenBank under the accession no. AEAR00000000. The version described in this paper is the first version, AEAR01000000Among eukaryotes, four major phytoplankton lineages are responsible for marine photosynthesis; prymnesiophytes, alveolates, stramenopiles, and prasinophytes. Contributions by individual taxa, however, are not well known, and genomes have been analyzed fromonly the latter two lineages. Tiny >picoplanktonic> members of the prymnesiophyte lineage have long been inferred to be ecologically important but remain poorly characterized. Here, we examine pico-prymnesiophyte evolutionary history and ecology using cultivation-independent methods. 18S rRNA gene analysis showed picoprymnesiophytes belonged to broadly distributed uncultivated taxa. Therefore, we used targeted metagenomics to analyze uncultured pico-prymnesiophytes sorted by flow cytometry from subtropical North Atlantic waters. The data reveal a composite nuclear-encoded gene repertoire with strong green-lineage affiliations, which contrasts with the evolutionary history indicated by the plastid genome. Measured pico-prymnesiophyte growth rates were rapid in this region, resulting in primary production contributions similar to the cyanobacterium Prochlorococcus. On average, pico-prymnesiophytes formed 25% of global picophytoplankton biomass, with differing contributions in five biogeographical provinces spanning tropical to subpolar systems. Elements likely contributing to success include high gene density and genes potentially involved in defense and nutrient uptake. Our findings have implications reaching beyond pico-prymnesiophytes, to the prasinophytes and stramenopiles. For example, prevalence of putative Ni-containing superoxide dismutases (SODs), instead of Fe-containing SODs, seems to be a common adaptation among eukaryotic phytoplankton for reducing Fe quotas in low-Fe modern oceans. Moreover, highly mosaic gene repertoires, although compositionally distinct for each major eukaryotic lineage, now seem to be an underlying facet of successful marine phytoplanktonSequencing was under DE-AC02- 05CH11231, by a Department of Energy Community Sequencing Program award to A.Z.W. and J. Eisen. Support was in part by DE-FC02-02ER63453, NSF OCE-0722374, and NSF-MCB-0732448 (to A.E.A.); a National Human Genomic Research Institute, National Institutes of Health grant (to R.S.L.); National Oceanic and Atmospheric Administration and David and Lucile Packard Foundation (DLPF) grants (F.P.C.); NSF-OCE-0241740 (to B.J.B.); and major funding by NSF-OCE-0836721, the DLPF, and a Moore Foundation Young Investigator Award as well as Moore 1668 (to A.Z.W.). Author contribution details are given in SI Materials and Methods, Section 12Peer Reviewe
