1,721,002 research outputs found
Study on the Performance of Rice Husk Ash as a Cementing Material
No full textThis thesis is submitted to the Department of Civil Engineering, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Engineering in Civil Engineering, May 2007.Cataloged from PDF Version of Thesis.Includes bibliographical references (page 34).Utilization of rice husk has become subject of growing interest. The possibilities of its
utilization of rice husk in various ways have evoked much interest due to its high silica content.
Particularly in the developing countries of South-east Asia where the production of rice is more
than half of the production of entire world. Most important among various methods suggested
for the utilization, is the development of construction materials from rice husk as such and from
its ash. For every 1000 kg of paddy milled, about 220 kg (22%) of husk is produced, and when
this husk is burnt in the boilers, about 55 kg (25%) of rice husk ash (RHA) is obtained. Rice
husk ash is a great threat to environment causing damage to the land and surrounding area in
which it is dumped. Rice husk burnt at 450CC have been found to produce a pozzolana
conforming to the requirements of the ASTM standard C618-72. Therefore, valuable product
from this rice hush ash (RHA) is possible.
The rice husk For the study was collected from rice husking mill and was burnt in muffle
furnace in laboratory (at 450°C) for 60 minutes. Rice husk is found to contain about 76.53 %
organic volatile matter and the balance 23.47 % as ash (Table 3.7). The rice husk ash was
grounded in laboratory by using Industrial Ball Mill to the form of powder. The particles finer
than 200 meshes was collected for further test.
The new product of RHA cement sample was tested for properties like Ordinary Portland
Cement. RAH cement made in this study contains ash, lime and clay in different ratio. For this
purpose a typical samples at the beginning was made with RHA (60%) mixed with finely
grounded lime (30%) and un-burnt clay (10%). Similar samples were made with burnt (800 °C)
clay. The result between two are found to agree. Rest of the cement samples were made with
Un-burnt clay and burnt clay. Results of these samples are shown in table no. 4.1, 4.2, 4.3, 4.4,
4.5. By discussion the test results we find that, (a) in case of un-burnt clay, average water-cement
ratio required for cement paste of normal consistency (CPNC) was found to be 0.56,
initial setting time was found to be 96 minutes, final setting time was found to be 6 hrs. 58
minutes. and 3 days compressive strength for cement mortar cube was found to be 171 psi.
respectively. (b) in case of burnt clay, average water- cement ratio required for cement paste of
normal consistency (CJNC) was found to be 0.56, initial setting time was found to be 96
minutes. final setting time was found to be 7 hrs.13 minutes and 3 days compressive strength for
cement mortar cube was found to be175 psi respectively. These values when compared with
those of Ordinary Portland Cement, it was found that in case of un-burnt clay, CPNC varied
only 7%, initial setting time was double than OPC, final setting time was increased by one
hour than OPC. (b) in case of burnt clay, CPNC was found to be 0.56, initial setting time was
found to be more than double than OPC, final setting time was increased by one and half hour
than OPC and 3 days compressive strength was found to be 175 psi. It is clear from the study
that RHA can be attributed cementing property when combined with lime and clay. The
properties of this cement resembles with those of OPC with compromise of' higher setting time
and lower strength. However this may be recommended for the cases where lower strength can
be used (e.g., boundary walls, normal load bearing residential buildings, partition walls, surface
drains etc.)Md. Azad Hossain KhanMaster of Engineering in Civil Engineerin
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
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
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn 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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