1,720,954 research outputs found
The Effect of Rosmarinus officinalis and Trachyspermum ammi on the Growth of Eruca vesicaria ssp. sativa in Hydroponics Versus Natural Soil
Get PDFDespite technology being developed to address the food shortages due to increasing population, current methods of cultivating crops are not sufficient. Scientists are addressing this issue by researching biostimulants that stimulate plant growth without harming the environment and researching the use of hydroponics, a way of growing crops without soil. The purpose of this study was to combine the use of essential oils and growing methods (hydroponics and soil) and measure its impact on the height of E. sativa. It was hypothesized that if E. sativa was grown hydroponically with added Rosmarinus officinalis (REO) and Trachyspermum ammi (TEO) over time, it would demonstrate greater growth because manipulating these aspects would directly impact the plants’ development and nutrient uptake. A 0.7% spray mixture of REO and of TEO was added to different sets of plants every five days in both the soil and hydroponic environments, and the height of the plants were measured each time. The results of the one-way ANOVAs (comparing the two environments) and z- and t-tests (comparing REO, TEO, and no treatment in the environments) suggest that there were no significant differences between the treatment of the oil used and the environment in which the plants were grown. Thus, it was concluded that there is not sufficient evidence to suggest there is a difference between the height of the E. sativa exposed to essential oils and those not exposed to essential oils in soil or hydroponics
The Effect of Lemna minor and Azolla ssp. on the Phytoremediation of Simulated Biomedical Waste
No full textDespite the fact that there has been much research conducted on removing various contaminants from bodies of water, there has been a significant increase in, specifically, biomedical waste contamination that current methods of decontamination are not sufficient enough for. These wastes, containing traces of blood, are typically disposed of by hospitals, which can pose many health risks to the environment if it were to contaminate water sources. The purpose of this study was to compare the efficiency of two aquatic plants, Lemna minor and Azolla caroliniana, on the removal of simulated blood. It was hypothesized that if Lemna minor and Azolla caroliniana were placed in a solution of albumin, glucose, and Lactated Ringer\u27s solution for a period of two weeks, then Lemna minor would result in a lower absorbance reading on a spectrophotometer at the conclusion of the study because Lemna minor has been proven to have great potential to remove contaminants. Approximately 10 grams of each plant was exposed to the simulated blood for two weeks; concentrations of each of the following substances were measured three times during the duration of the experiment. The results of the MANOVA tests suggest that there was a significant change in the concentration of these three substances that were used to simulate blood from biomedical waste (p \u3c .001). Thus, it was concluded that there is sufficient evidence to suggest there is a difference in the removal of albumin, glucose, and Lactated Ringer’s solution when phytoremediation by Lemna minor and Azolla caroliniana plants
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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