1,720,953 research outputs found
Seasonal monitoring of groundwater in the urban area of the municipality of Apuí-AM
Water consumption is essential for human survival, however, it is essential that it is free from any form of contamination, whether chemical, physical or microbiological in nature. Therefore, it is necessary to treat water in accordance with the standards established by regulatory bodies, in order to eliminate any microorganisms present in it before consumption. Groundwater is sought after as an alternative source due to its generally adequate quality due to the soil's ability to act as a natural filter, contributing to the purification of these waters. The objective of this study was to carry out seasonal monitoring of physical, chemical and microbiological parameters of groundwater from supply wells in the urban area of the municipality of Apuí-AM. For this purpose, water samples were collected in eight deep tubular wells, in different locations, during periods of drought and flooding. In the physical-chemical analyses, the parameters defined for evaluation were pH, total hardness, nitrite, nitrate, manganese, iron, aluminum, color, turbidity, total solids and electrical conductivity. The microbiological analyzes carried out were thermotolerant coliforms, total coliforms and Escherichia coli. Subsequently, the results were compared with the limit values established by GM/MS Consolidation Ordinance No. 888, of May 4, 2021, on water potability. The results showed that the majority of wells presented a pH within the permitted range (6.0 to 9.5) during the two periods analyzed, except PT-1, which presented an acidic pH (5) in both seasons. For turbidity, values above the permitted value (5.0 UT) were obtained in wells PT-1, PT-6, PT-9 and PT-10 during the low tide and in wells PT-1, PT-5, PT-6, PT-9 and PT-10 during the flood. Wells PT-5, PT-6, PT-9 and PT-10 showed high iron levels at both times. Elevated values of total manganese were found in several wells during low water, but were within limits during high water. Microbial contamination was detected in several wells, with water quality improving at the time of the flood, but still persisting in some cases. Therefore, the importance of analyzing the quality of water intended for human supply and the need for corrective actions are highlighted, highlighting their relevance to guarantee public health.O consumo de água é essencial para a sobrevivência humana, no entanto, é imprescindível que esta esteja livre de quaisquer formas de contaminação, sejam elas de natureza química, física ou microbiológica. Portanto, é necessário tratar a água de acordo com as normas estabelecidas por órgãos reguladores, a fim de eliminar quaisquer microrganismos presentes nela antes de seu consumo. As águas subterrâneas são procuradas como fontes alternativas devido à sua qualidade geralmente adequada devido à capacidade do solo de atuar como um filtro natural, contribuindo para a purificação dessas águas. O objetivo deste estudo foi realizar monitoramento sazonal de parâmetros físicos, químicos e microbiológicos da água subterrânea de poços de abastecimento da área urbana do município de Apuí-AM. Para este fim realizou-se a coleta de amostras de água em oito poços tubulares profundos, de diferentes localidades, durante os períodos de estiagem e enchente. Nas análises físico-químicas, os parâmetros definidos para avaliação foram pH, dureza total, nitrito, nitrato, manganês, ferro, alumínio, cor, turbidez, sólidos totais e condutividade elétrica. As análises microbiológicas realizadas foram coliformes termotolerantes, coliformes totais e Escherichia coli. Posteriormente, comparou-se os resultados com os valores limites estabelecidos pela Portaria de consolidação GM/MS n° 888, de 4 de maio de 2021, sobre potabilidade da água. Os resultados mostraram que a maioria dos poços apresentou pH dentro do intervalo permitido (6,0 a 9,5) durante as duas épocas analisadas, exceto PT-1, que apresentou pH ácido (5) em ambas as épocas. Para turbidez obteve-se valores acima do permitido (5,0 UT) nos poços PT-1, PT-6, PT-9 e PT-10 durante a vazante e nos poços PT-1, PT-5, PT-6, PT-9 e PT-10 durante a enchente. Os poços PT-5, PT-6, PT-9 e PT-10 apresentaram níveis elevados de ferro em ambas as épocas. Valores elevados de manganês total foram encontrados em diversos poços durante a vazante, mas estavam dentro dos limites na enchente. A contaminação microbiana foi detectada em vários poços, com melhoria na qualidade da água na época da enchente, mas ainda persistindo em alguns casos. Dessa forma, destaca-se a importância de analisar a qualidade da água destinada ao abastecimento humano e a necessidade de ações corretivas destacando sua relevância para garantir a saúde pública.2Nã
Going Beyond Counting First Authors in Author Co-citation Analysis
The 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
“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
We 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
We 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
We 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.
Author-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
In Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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