125,133 research outputs found
Akersvatnet. Overvåking av vannkvalitet og toksinproduserende cyanobakterier i 2001
No full textFormålet med overvåkningen i 2001 var å undersøke vannkvaliteten (fysisk, kjemisk og biologisk) i Akersvatnet som grunnlag for Vestfold interkommunale vannverk (VIV) til å bedømme den rådende vannkvaliteten til Akersvatnet som reserve-drikkevannskilde for Vestfold. Et annet formål var å kunne gi varsel om fare for masseutvikling av giftproduserende cyanobakterier og skadelige alger som kan medføre praktiske problemer for bruken av Akersvatnet. Rapporten presenterer resultater fra målinger og prøvetaking utført i mars og månedlig i produksjonsperioden (mai-oktober) ved hovedstasjonen i Akersvatnet. Vannkvaliteten i Akersvatnet basert på nitrogen-, fosfor- og klorofyll a-konsentrasjoner vurderes som meget dårlig (tilstandsklasse V) etter SFTs inndeling i vannkvalitetsklasser for trofigrad. Algebiomassen og planteplanktonsammensetningen viser at Akersvatnet er eutrof - hypereutrof. Cyanotoksiner av typen microcystin ble påvist i vannprøver fra juli, august og september. Nivåene var imidlertid lavere enn WHO's anbefalte maksimumsverdi for drikkevann. Hovedproblemet med Akersvatnet som reservevannskilde i 2001 var dermed de store algemengdene i juni - september, som ville kunne ført til problemer for den rensetekniske behandlingen av vannet, samt lukt- og smakpåvirkning ved bruk av vannverket i denne perioden
Overvåking av toksinproduserende cyanobakterier i Steinsfjorden 2001. Sammenfattende resultater fra 1997-2001
No full textI Steinsfjorden, Buskerud, har det siden 1997 vært observert årlige oppblomstringer av toksinproduserende cyanobakterier (blågrønnalger) av slekten Planktothrix. Forekomst av toksinproduserende cyanobakterier, planktonalger og cyanotoksiner, samt vannkvalitet ble undersøkt i mars og månedlig i produksjonsperioden (mai - september) ved hovedstasjonen i Steinsfjorden. Artene Planktothrix rubescens var. og P. prolifica dominerte cyanobakteriesamfunnet gjennom hele undersøkelsesperioden. Cyanobakteriene var tilstede under isen i mars med opp til 4000 trichomer per liter, i 5 m dyp. Under stagnasjonsperioden (juni - august) var Planktothrix-populasjonen konsentrert i metalimnion i dypet 8-15 m. I september blev deler av populasjonen ført opp til de øvre vannmasser p.g.a. partiell vertikal sirkulasjon. Opp til 110 000 Planktothrix trichomer per liter ble målt i metalimnion i 2001 (8. august i 10 m dyp). Toksinnivået i dette vannet var mellom 0,5-3 µg microcystin per liter og var dermed høyere enn WHO's anbefalte maksimumsverdi for drikkevann. Vannet kunne imidlertid regnes som akseptabelt for bading
The role of cardiovascular imaging for myocardial injury in hospitalized COVID-19 patients
No full textThis is a pre-copyedited, author-produced version of an article accepted for publication in European Heart Journal - Cardiovascular Imaging, following peer review. The version of record: Bernard Cosyns, Stijn Lochy, Maria Luiza Luchian, Alessia Gimelli, Gianluca Pontone, Sabine D Allard, Johan de Mey, Peter Rosseel, Marc Dweck, Steffen E Petersen, Thor Edvardsen, on behalf of the European Association of Cardiovascular Imaging (EACVI), The role of cardiovascular imaging for myocardial injury in hospitalized COVID-19 patients, European Heart Journal - Cardiovascular Imaging, Volume 21, Issue 7, July 2020, Pages 709–714, https://doi.org/10.1093/ehjci/jeaa136
is available online at: https://doi.org/10.1093/ehjci/jeaa13
The development and use of a new tool for estimating individual sun induced vitamin D in epidemiological surveys
No full textThe papers of this thesis are not available in Munin: 1. Kåre Edvardsen, Magritt Brustad, Ola Engelsen and Lage Aksnes: 'The solar UV radiation level needed for cutaneous production of vitamin D3 in the face. A study conducted among subjects living at a high latitude (68° N)', Photochemical & Photobiological Sciences (2007) 6, 57-62. Available at http://dx.doi.org/10.1039/b613263d 2. Magritt Brustad, Kåre Edvardsen, Tom Wilsgaard, Ola Engelsen, Lage Aksnes and Eiliv Lund: 'Seasonality of UV-radiation and vitamin D status at 69 degrees north', Photochemical & Photobiological Sciences (2007) 6, 903-908. Available at http://dx.doi.org/10.1039/b702947k 3. Kåre Edvardsen, Ola Engelsen and Magritt Brustad: 'Duration of vitamin D synthesis from weather model data for use in prospective epidemiological studies', International journal of biometerology (2008) vol. 53, no. 5, 451-459. Available at http://dx.doi.org/10.1007/s00484-009-0231-6 4. Kåre Edvardsen, Marit B. Veierød, Magritt Brustad, Tonje Braaten, Ola Engelsen and Eiliv Lund: 'Vitamin D-effective solar UV radiation, dietary vitamin D and breast cancer risk', International Journal of Cancer (2010) vol. 128, Issue 6, pages 1425–1433. Available at http://dx.doi.org/10.1002/ijc.25463</a
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Table_S2_Egge_et_al_2015_jeukmic
No full textTable containing information about the haptophyte V4 SSU rRNA OTUs recorded in Skagerrak in the period September 2009 – June 2011. First published in Egge ES, Eikrem W, Edvardsen B (2015) “Deep-branching Novel Lineages and High Diversity of Haptophytes in the Skagerrak (Norway) Uncovered by 454 Pyrosequencing”, Journal of Eukaryotic Microbiology 62, 121-140. DOI: 10.1111/jeu.1215
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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