1,720,979 research outputs found
Researches on the infectious of bunt (Tilletia spp.) and loose smut (Ustilago nuda var. tritici) diseases on wheat seeds in Konya city
No full textBu çalışma Konya İlinde hasat edilen buğday ürününün yanıklık hastalıklarıyla (Sürme ve rastık) bulaşıklılık durumunu belirlemek amacıyla yapılmıştır. Bunun için 2003 ve 2005 yıllarında Konya İlinin 16 ilçesinden toplanan 260 buğday örneğinin sürme ve rastık hastalıklarıyla bulaşıklılığını saptamak için sırasıyla tohum yıkama ve embriyo test yöntemi uygulanmıştır. Tohum yıkama yöntemi kullanılarak sürme (Tilletia spp.) ile bulaşıklılık durumları araştırılan buğday tohum örneklerinin 2003 yılında % 26.15'inin, 2005 ise yılında % 23.07'inin sürme ile bulaşık olduğu saptanmıştır. 2003 yılında en yüksek bulaşıklılık oranı % 50 ile Akşehir, Kadınhanı ve Selçuklu ilçelerinde, en düşük bulaşıklılık oranı % 0 ile Seydişehir ilçesinde bulunmuştur. 2005 yılında ise en yüksek bulaşıklılık oranı % 50 ile Seydişehir ve Kadınhanı ilçelerinde, en düşük bulaşıklılık oranı % 0 ile Akşehir, Meram ve Selçuklu ilçelerinde tespit edilmiştir. Bulaşık örneklerde saptanan spor yükü, yıllara göre sırasıyla 133- 7464 ve 133- 3800 klamidospor/dane arasında değişmiştir. 2003 yılında ilçelere ait ortalama en yüksek spor yükü Kadınhanı ilçesinde (1079 klamidospor/dane), en düşük Seydişehir ilçesinde ( 0 klamidospor/dane) bulunurken; 2005 yılında ise en yüksek Kadınhanı ilçesinde (542 klamidospor/dane), en düşük Akşehir, Meram ve Selçuklu ilçelerinde (0 klamidospor/dane) saptanmıştır. Sürme türü olarak Tilletia foetida tespit edilmiştir. Açık rastık (Ustilago nuda var tritici) ile bulaşıklılık oranları embriyo test yöntemi ile araştırılan buğday tohum örneklerinde rastık ile enfekteli tohuma rastlanılmamıştır.This study was conducted to determine the infectious bunt and smut diseases incidences on the wheat seeds harvested in Konya city. These diseases were examined by the application of seed washing and embryo test methods on 260 of wheat seed samples collected from 16 different districts of Konya city in 2003 and 2005 years. Seed washing test revealed that 26.15 and 23.07 % of wheat seed samples collected in 2003 and 2005 years, respectively was determined to be infected with bunt (Tilletia spp.). The highest incidence of bunt infection (50 %) was observed in the samples collected from Akşehir, Kadınhanı and Selcuklu districts while the lowest incidence (0 % ) was observed in the samples collected from Seydişehir district in 2003. In 2005, the highest incidence (50 %) was observed in the samples from Seydişehir and Kadınhanı districts, but the lowest incidence (0 %) was observed in the samples collected from Akşehir, Meram and Selçuklu districts. The number of chlamydospore was determined to range between 133-7464 and 133-3800 per seed in 2003 and 2005 years, respectively. The highest (1079 chlamydospore/per seed) and lowest mean (0 chlamydospore/per seed)) of chlamydospore numbers (chlamydospore/seed)) were found in the samples from Kadınhanı and Seydişehir districts, respectively in 2003. As for 2005, the highest mean value (542 chlamydospore/per seed) was determined in the samples from Kadınhanı, however, lowest mean value (0 chlamydospore/per seed) was determined in the samples from Akşehir, Meram, and Selçuklu districts. Tilletia foetida was determined on the wheat seed samples as a bunt species. According to embryo test method results, there was no any seed infected with smut (Ustilago nuda var. tritici) among the wheat seed samples
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Determination of the Chemical Fingerprint, Volatile Composition, Antibacterial and Antifungal Effects of Bergamot Essential Oil
No full textExploring ethyl pyruvate as an antifungal and antibacterial agent for food preservation: an in vitro and in silico study
No full textFood pathogens are one of the microbiological problems that have negative effects on both economic and human health by causing spoilage and decay of important foods such as fruits and vegetables. The adverse effects of chemical residues left by synthetic biocides on human health and the development of resistance mechanisms in microorganisms have directed research towards bio-fungicide. This study aimed to develop an effective bio-fungicide using varying concentrations of ethyl pyruvate (1–18 μL disc−1). Additionally, the interaction of EP with several proteins in pathogenic bacteria and fungi was investigated through in silico molecular docking. According to the obtained results, an increase in EP concentration resulted in larger inhibition zone diameters. In this context, at an EP concentration of 18 μL disc−1, the inhibition zones formed against E. coli, S. aureus, L. monocytogenes and S. typhimurium bacteria were measured as 27.50 ± 0.50 mm, 31.00 ± 1.00 mm, 30.00 ± 1.00 mm and 32.66 ± 1.15 mm, respectively. EP at a concentration of 9 μL disc−1 showed a fungicidal effect against B. cinerea and P. expansum and a fungistatic effect against C. gloeosporioides. As a result of in silico tests, the molecular binding energies of EP with E. coli dihydrofolate reductase, S. aureus DNA Gyrase B and B. cinerea 14 alpha-demethylase were determined to be −4.62, −4.26 and −3.95 kcal mol−1, respectively. Our results holistically revealed that EP has great potential for use in food preservation due to its antifungal and antibacterial properties
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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
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