1,720,954 research outputs found
Gas Chromatography-Mass Spectrometry Based Metabolite Profiling and In Silico Activity Prediction of Phytoconstituents in Phoenix dactylifera L. Leaves Extracts of Kachchh Region
Get PDFPhoenix dactylifera L. commonly known as date palm is one of the major flora grown in the Kachchh region. Date palm is dioecious plant, that is, it owns separate male and female trees. Gas chromatography-mass spectrometry (GC-MS), high-performance liquid chromatography, high-performance thin layer chromatography, and infrared red spectroscopy are some widely utilized sophisticated analytical techniques for the identification of bioactive phytoconstituents in medicinal plants. The present study aims to identify phytoconstituents present in ethyl acetate extract of male and female date palm leaves using GC-MS. These identified bioactive phytoconstituents were subjected toin silico useful biological activity prediction using pass online server. The study concluded that both male and female extracts were enriched phytochemicals possessing diverse valuable biological activity such as antihypercholestrolemic, anticancer, antineopolastic, lipid metabolism regulator, hepatoprotectant, and apoptosis antagonist
Green corrosion inhibitors derived from plant extracts and drugs for mild steel in acid media: A review
No full textCorrosion is defined as the process of degradation of the metal upon its chemical or electrochemical interaction with its surroundings. Such detroitation of metal is widely influenced its key factors like acids, alkalis, humidity, pH, temperature and salts that are responsible for the formation and succession of corrosion. Acids are widely employed in cleaning, descaling and pickling of metal surface. During this process, metallic parts undergo mass loss due to which corrosion is major industrial issue. Inorganic & organic substances, polymeric compounds, nanomaterials, plant extracts and drugs molecules have been employed as corrosion inhibitors to prevent corrosion of metals in acid media. The usage of plant extract as corrosion inhibitors is gaining familiarity nowadays due to its cost-effective, eco-friendly, plentiful availability and simplified production techniques. Different techniques used for the evaluation of corrosion inhibitors are mass loss measurements, potentiodynamic polarization & electrochemical impedance methods, density functional theory, molecular dynamic simulation and adsorption isotherm models.In the present review, various methods to prepare plant extracts along with their advantages and disadvantages are presented. Different plant extracts along with constituent molecules are presented so as to provide insight on their mechanism to prevent the corrosion of mild steel in acid media. The study also provides insight on the potential of drug molecules to prevent the corrosion of steel samples in acid media and their mechanism of action. The review concludes that plant extracts & drug molecules may serve as optimistic agents to prevent the corrosion of mild steel in acid media
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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