1,722,213 research outputs found
Content of mineral elements in Euroepan cultivars of Cornelian cherry (Cornus mas L.)
No full textPotravinářské využití plodů dřínu obecného (Cornus mas L.) má u nás dlouhou tradici. Přestože v současnosti patří toto ovoce mezi okrajové druhy, je možno zaznamenat zvyšování zájmu o kultivaci této plodiny. Je to dáno její nenáročností na prostředí a hodnotnými plody s vysokou antioxidační aktivitou a velmi vysokými obsahy minerálních prvků. Cílem našeho měření bylo stanovit vybrané minerální prvky u 9 ruských, ukrajinských, slovenských a rakouských odrůd. Nejvíce zastoupeným prvkem byl draslík. U všech sledovaných minerálních prvků byly zaznamenány v průměru dvojnásobná až trojnásobná množství obsahu ve srovnání s našimi běžnými druhy ovoce. Plody dřínů měly až desetinásobná množství železa a manganu než je uváděno u jablek.Alimentary utilization of Cornelian cherry (Cornus mas L.) fruit has a long tradition in our country. Although at present this fruit belongs to marginal species, it is possible to observe an increasing interest in the cultivation of this crop plant because of its low requirements for the environment and valuable fruit with high antioxidant activity as well as high contents of mineral elements. The aim of our measurement was to determine chosen mineral elements in 9 cultivars of Russian, Ukrainian, Slovak and Austrian origin. The most represented element was potassium. In all mineral elements under investigation on average two or even three times higher amounts were recorded in comparison with our common fruit species. Cornelian cherry fruit had up to ten times higher contents of iron and manganese than it is presented in apples
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Analysis of Anthocyanins in cornelian cherry (Cornus mas L.)
Get PDFThis study aimed to determine and analyze the total anthocyanin content in extracts from cornelian cherry (Cornus mas L.). The fresh fruits of cornelian cherry (Cornus mas L.) were extracted with the solvent of EtOH 96% /0.1% HC l (1:1, ratio) at room temperature for 4 h in the dark. The extraction process was an important step in the isolation and identification of anthocyanins. For this purpose, the total anthocyanin contents in cornelian cherry (Cornus mas L.) fruits was performed with a variety of pH and analyzed by UV-Vis Spectroscopy. The results showed that the total anthocyanin content (expressed as cyanidin-3-glucoside) in the extract was 146.12.to 328.2 mg/100g total anthocyanin of dry material. All statistical analysis was performed using the MS Excel program and SPSS 22.0 statistics software
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