622 research outputs found
Mutual information relevance networks : functional genomic networks built from pair-wise entropy measurements
No full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Thesis (S.M.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology, 2002.Includes bibliographical references (leaves 27-28).by Atul Janardhan Butte.Thesis (S.M.)--Harvard--Massachusetts Institute of Technology Division of Health Sciences and Technology, 2002
An Investigation into Reliable Transport Limits and Slip Velocity for Fluidized Dense Phase Conveying of Cement
No full textME, MEDThis report presents the results of an investigation into the minimum transport boundary of pneumatic conveying of cement and calculation of the slip velocity for pneumatic conveying of fly ash and cement. The properties of conveying materials used in experiments of this report are: cement (median particle diameter: 19 µm; particle density: 2910 kg/m^3; bulk density: 1080 kg/m^3) and fly ash (median particle diameter: 45 µm; particle density: 1950 kg/m^3; bulk density: 950 kg/m^3). These materials were conveyed through four different pipelines (viz. 43 mm I. D. × 24 m length, 54 mm I. D. × 24 m length, 54 mm I. D. × 70 m length and 69 mm I. D. × 24 m length) over the wide range of flow conditions (from fluidized dense phase to dilute phase flow). Pneumatic conveying characteristics based on total pipeline pressure drop were developed for all the pipelines.
To define the safe, reliable transport limits for cement Froude number based criteria were used at pipe inlet (Fri = 5 to 10). These limits are compared with one of the most popular model Mallick and Wypych (2010). For slip velocity, an investigation has been done for both fly ash and cement. A high resolution digital signal reflex camera is installed on a tripod to observe a detailed flow of material at a certain position of the sight glass section. The camera is capable to take video at 50 to 60 frames per second. These produced frames are further analyzed to estimate the slip velocity
A study on India's Free Trade Agreements (FTAs) 1
No full textAbstract FTAs are trade agreements between two countries (or blocs) which aim to give each other access to markets by lowering or removing border protection measures such as border taxes on exports and imports, and other barriers (such as standards, processes). So, in this paper, we have discussed about the India's Free Trade Agreements (FTAs)
An Investigation into the Effects of Different Blow Tank Aeration Conditions on the Conveyability of Fine Powders in Pneumatic Conveying Systems
No full textME ThesisPneumatic conveying test rigs, one positive pressure system and one negative pressure (vacuum) system, were designed, fabricated and installed at the ‘Laboratory for Bulk Solids and Particle Technologies’ in the Mechanical Engineering Department of Thapar Institute of Engineering and Technology (T.I.E.T), Patiala. The work was carried out under the aegis of a research collaboration between T.I.E.T and NTPC Ltd., with an aim to rid the pneumatic conveying plants installed in power stations owned by NTPC Ltd. of certain encountered problems. This document reports the entire facility building procedure/activity, for the aforementioned test rigs, undertaken at T.I.E.T. Presented also are the findings of experimental investigations conducted on a bottom discharge type 0.8 m3 blow tank feeder, used in the present study, through variation of aeration conditions of this feeder and the air flow rates fed to the system for material conveyance, are presented. Fly-ash (bulk density 1000.7 kg/m3, particle density 1384.4 kg/m3, d50 = 43.61 μm) was conveyed over a wide range of flow rates, and correspondingly a wide range of air flow rates, to study the effect of fluidization air supply to the blow tank, total air supply to the system, aerating side air supply to the blow tank, location of aerating supply to the blow tank, and prepressurization condition of the blow tank on flow rate by mass, of material, in tonnes/hour (tonnage), through the system. Furthermore, the effect of varying relative proportions of side air to the blow tank and conveying air to the system was also evaluated. Pre-pressurization of the blow tank feeder and increase in relative proportion of side air fed to the blow tank feeder were seen to considerably favour the tonnage. For use in the larger experimental program five sonic nozzles for metering specified mass flow rates of air to the system was designed. The nozzles are arranged to provide parallel flow, to form an assembly called the sonic nozzle bank.NTP
An Investigation into Transient Pressure Pulses for Gas-Solids Flow
No full textM.E. (Thermal Engineering)Pressure drop is very decisive and analytical parameter in the context of pneumatic conveying to know about flow characteristics and operating conditions for the reliable designing of fluidized dense phase pneumatic conveying systems. This study presents the results of ongoing investigation on transient pressure pulses using Shannon entropy technique. Pressure fluctuations (produced by gas-solid phase flow during fluidized dense phase conveying) were recorded by pressure transducers installed at strategic locations of pipeline. In the present work, two different powders have been conveyed i.e. fly ash (median particle diameter 45 µm, particle density 1950 kg/m3, loose-poured bulk density 950 kg/m3) and cement (median particle diameter 15 µm, particle density 3060 kg/m3, loose-poured bulk density 1070 kg/m3) through different pipelines (51 mm I.D. x 70 m long and 63 mm I.D. x 24 m long). The influences of superficial air velocity on Shannon entropy were also investigated.
In this study, transient nature of pressure fluctuations was taken into consideration (instead of steady state behavior) for investigation to know more about flow characteristics. It was found that value of Shannon entropy and standard deviation increased along the straight sections of pipe for both products and for different pipelines. However, there is a decrease in value of Shannon entropy after the flow through bend. Different range of Shannon entropy value was obtained for fly ash and cement. Higher value of Shannon entropy was noticed corresponding to low velocities and high velocity region while minimum value of entropy was found corresponding to medium velocities. Effect of solid mass flow rate on Shannon entropy at constant value of air mass flow rate was also observed
Mapping and Visualizing Research of COVID-19 with Immunology: A Bibliometric Study
No full textThis paper aims to demonstrate the World’s scientific contribution to COVID-19 and Immunology research for 2020–2022 and the emerging research pattern using various bibliometric parameters. The research publications were
retrieved from the SCOPUS database and analyzed using MS Excel, R Studio, and VOS Viewer software. The VOS Viewer software is mainly used for networking and visualization to understand the research pattern better. A total of 2877 documents were retrieved from SCOPUS using the search topic
COVID-19 and Immunology. The research found that DIAO B was a prolific author in COVID-19 and Immunology research, with 1247 publications. The most productive countries and institutions in this field were the USA (555 publications) and Huazhong university of science and technology (409
publications). The five hot author keywords are COVID-19, Sars-cov-2, Vaccine, Coronavirus and Antibody. The present study provides various networking map of research publications regarding the immune response
during COVID-19 infection. The results benefit researchers and practitioners in India and worldwide for understanding the pattern of research on COVID19 and identifying the potential immune response against SARS-CoV-
Analyzing Advancement in Crowdfunding Research and Envisioning its Future: A Bibliometric Approach
No full textPublished online 24 July 2023. Published in print 1 August 2023.Academy of Management Annual Meeting Proceedings includes abstracts of all papers and symposia presented at the annual conference, plus 6-page abridged versions of the “Best Papers” accepted for inclusion in the program (approximately 10%). Papers published in the Proceedings are abridged because presenting papers at their full length could preclude subsequent journal publication. Please contact the author(s) directly for the full papers.Crowdfunding represents an emerging alternative means of marshaling resources which may prove to be a game-changer in the entrepreneurial finance landscape. Although the rapid growth in this field has yielded a multidisciplinary body of work, the scaffolding of this vast body of work is still largely unknown in the scholarly domain. We conduct a bibliometric analysis of 534 crowdfunding articles to uncover the intellectual landscape of crowdfunding research. Our comprehensive co-citation analysis reveals two generations of crowdfunding research, identifies the most researched themes in area, and highlights its theoretical and disciplinary anchors. In addition, our bibliographic cartography traces the shifts in areas of interest of scholars within the heterogeneous field. Overall, our critical analysis of the most influential conversations in crowdfunding research helps reveals gaps in the extant literature which act as fertile directions for its future inquiry
A Scientometric Exploration of Global Publications of Yoga Research from 2002-2021
No full textThe paper aims to provide an in-depth evaluation of the research output of Yoga for a period of 20 years, from 2002-2021. A total of 3498 documents retrieved from the Web of Science(WoS) database are considered for this analysis. The research finds that Cramer, H. was a most prolific author in Yoga scientific research with the highest 79 publications and top 2980 global citations. The most productive country is the USA, with 23967 publications, followed by India (5822) and Australia (2258). There was a significant increase in publications during the period of study. Most articles were published in the Journal of Alternative and Complementary Medicine. The highest number of Yoga research papers were contributed by two Indian institutions: All India Institute of Medical Sciences and the National Institute of Mental Health and Neuro-Sciences. Cramer H’ published the highest number of papers. The present study will be helpful for other researchers for further studies on Yoga research and policymakers for funding decisions and strategies
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