197,261 research outputs found

    Deposition of ZnS thin films by photochemical deposition technique

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    ZnS thin films have been deposited on a glass substrate by photochemical deposition (PCD) technique from an aqueous solution. The effect of pH and stirring speed of the solution on deposition has been studied. The optical transmission spectra of the solutions have been recorded before and after deposition and also for the deposited film. The as-deposited and annealed films were characterized by X-ray diffraction (XRD) and it is observed that the crystallinity of the deposited films is improved by annealing at various temperature from 100 to 500 jC. The surface coverage of the film has been studied using optical microscope

    Dr. Duane M. Jackson, Morehouse College, July 2011

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    This video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer

    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.

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    "Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states. By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement. To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports

    Physiological studies on Phymatotrichum omnivorum (Shear) Duggar (with special reference to glycogen metabolism)

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    The physical and chemical properties of glycogen from Phymatotrichum omnivorum and its catabolism during growth were studied. Glycogen samples from rabbit liver and shellfish were compared with Phymatotrichum glycogen in physicochemical studies. Glycogen was extracted from Phymatotrichum sclerotia with 10% trichloroacetic acid (TCA), and purified by several alcohol precipitations. The carbohydrate content of purified glycogen was found to be 98.71%. Optical rotation was +183.3��, and optical rotatory dispersion showed the absence of optically active substances between 200 and 600 nm. Maximum absorption of a glycogen-iodine complex was at 395 nm. Infrared spectra confirmed the [alpha?]-1-4- linkage as well as [alpha?]C-L-glucopyranose units of the molecule. Acid hydrolysis (H���SO���) of glycogen yielded glucose, which was identified by thin-layer chromatography. Alpha- and beta-amylase studies indicated the average chain length was 13 glucose units with 43% limit dextrin. Results of periodate oxidation of glycogen agreed closely with the result of the amylase studies. The effects of temperature, pH, CO���, mineral, and substrate concentrations on the growth of P. omnivorum were studied. The optimum temperature and pH for growth were 28 C and 5, respectively. There was a direct correlation between growth and substrate concentration. Inhibition of growth was found at high CO��� concentrations (5 and 50%). A high level of minerals (2X) was not favorable for growth.

    Dispelling the Myths Behind First-author Citation Counts

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    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

    Dr. Glendon Swarthout

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    Hosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness

    Sub-Lethal Effects of Phosphine on Larvae of Tribolium Castaneum.

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    This Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page

    Guest editorial: Theoretical advancements in business: past, present and future

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    Business management literature has been stretched and expanded in every possible direction during the past few decades. What was once considered a luxury for firms has now become a necessity. Academic practitioners and researchers have also contributed to business management literature growth (Eisenhardt and Graebner, 2007; Lewis and Grimes, 1999). However, as the research evolves, it is important periodically to take stock and reflect on how its core theoretical ideas are developing and be open to radical innovations in businesses (Behl, 2020; Behl et al., 2019). It also calls for seeking answers to some key research questions (Mollah, 2019; Shepherd and Suddaby, 2017; Zahra, 2007; Wacker, 1998)

    Role of Thermoplastic Granulus for the Improvement of Strength of Clay Soil

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    Soil stabilization is any process which improves the physical properties of soil, such as increasing shear strength, bearing capacity etc. which can be done by use of controlled compaction or addition of suitable admixtures like cement, lime and waste materials like fly ash, phosphogypsum etc. The cost of introducing these additives has also increased in recent years which opened the door widely for the development of other kinds of soil additives such as plastics, bamboo etc. This new technique of soil stabilization can be effectively used to meet the challenges of society, to reduce the quantities of waste, producing useful material from non useful waste materials. Using of plastic wastes such as plastic bags, PVC powder from industry and construction and demolition waste is increasing day by day leading to various environmental concerns. Therefore the disposal of the plastic wastes without causing any ecological hazards has become a real challenge. Thus using PVC as a soil stabilizer is an economical utilization since there is scarcity of good quality soil for embankments. This paper describes an experimental study on mixing PVC waste powder with clayey soil at different mixing ratios 0, 0.25, 0.50, and 0.75 by weight respectively. For the clay Soil, Shear Strength parameter and Cohesion Value are obtained by conducting Unconfined Compressive Strength UCC test and Maximum Dry Density is found by Standard Proctor Test. V. Gunasekaran | M. Sandhiya "Role of Thermoplastic Granulus for the Improvement of Strength of Clay Soil" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: https://www.ijtsrd.com/papers/ijtsrd15787.pd

    Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses

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    Following an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
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