779 research outputs found
The people behind the papers – Léa Rambaud-Lavigne, Namrata Gundiah, Arezki Boudaoud and Pradeep Das
No full textInternational audienceThe shoot apical meristem is a key stem cell niche in plants, and proper stem cell maintenance is partly regulated by CLAVATA3 (CLV3). Without CLV3 meristems overgrow, but the mechanistic basis of this phenotype was unclear. A new paper in Development suggests that CLV3 modulates the physical properties of meristematic stem cells, and that these properties help shape meristem morphology. To learn more about the story behind the paper, we caught up with first author Léa Rambaud-Lavigne and corresponding authors Namrata Gundiah, Arezki Boudaoud and Pradeep Das
The Surabhi Theatre–An Oasis of Telugu Theatre
Get PDFThis document is a thesis submitted in partial fulfillment of the Master of Arts degree in Theatre Arts. It is a detailed account of author Pradeep Aswini Gurrala’s study of the Surabhi Theatre in Telangana, India. The thesis follows the journey of a 134-year-old theatre company in four chapters: puppet show to stage show; the evolution of the Surabhi Theatre; the decline of Surabhi Theatre; and Surabhi Theatre as a cultural heritage. Appendices and works cited are included
The combined incidence of taxes and public expenditures in the Philippines
Get PDFIncidence studies of fiscal policy in developing countries typically examine either the distribution of tax burdens or the incidence of public expenditures. But the central issue for policymakers is the combined or net incidence of fiscal activities. One reason that combined incidence studies are so rare is that they require detailed data on both taxation and public spending. The authors show that the net incidence of fiscal policy in a country with average data - the Philippines - can be estimated using a variety of data sources and tools, using simplifying assumptions. For 20 years, the Philippine economy has experienced a series of balance of payments crises triggered by fiscal crises. It has had an unsatisfactory record of poverty alleviation. The authors examine net fiscal incidence to find out how poverty will be affected by the rise in taxes and the cut in spending. They found that: 1) the incidence pattern of taxes is basically neutral. Contrary to expectations, indirect taxes are only slightly regressive; and 2) it is the pattern of expenditures that drives the combined incidence, which is progressive.Public Sector Economics&Finance,Environmental Economics&Policies,Health Systems Development&Reform,Economic Theory&Research,Health Economics&Finance,Environmental Economics&Policies,Public Sector Economics&Finance,Economic Theory&Research,Health Economics&Finance,Banks&Banking Reform
An analysis of benefits from the use of the RAPTOR and Bridge geographic information systems
No full textThe Richard Zerbe and Associates analysis team was contracted by Multnomah County, Oregon, to perform a return-on-investment study for two GIS platforms - RAPTOR and Bridge - used for emergency response.The RAPTOR and Bridge projects -- Methods -- Findings : RAPTOR -- Findings : Bridge -- These findings are conservative -- References -- The RAPTOR program survey -- The Bridge program surveyRyan Bodanyi, Adonis Ducksworth, Tyler Scott, Pradeep Singh, Richard ZerbeTitle from PDF title page (viewed on April 5, 2022)This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposesIncludes bibliographical references (page 23)Supported by a grant from Multnomah County, OregonMode of access: Internet from the Oregon Government Publications CollectionText in Englis
Biochar for horticultural and agricultural applications using high temperature torrefaction technology: Biochar for horticultural and agricultural applications using high temperature torrefaction technology
No full textBiochar for horticultural and agricultural applications using high temperature torrefaction technology Pradeep Ravi Supervisors: Prof Dr. D.J.E.M Roekaerts, ir.Bart de Vries, Dr. Luis Cutz, Dr.Lorenzo Botto & Dr.Ralph Lindeboom Biomass currently accounts for less than 10 percentage of the world’s renewable energy production. Currently the major global sustainability issue stems from the sourcing of virgin wood chips from dense forests for pellet production. An alternative is to use residual biomass from agriculture or forestry, which is produced in large volumes, to produce different products that range from biofuels to chemicals via thermochemical conversion technologies. Among thermochemical technologies, torrefaction is a promising route to produce solid biofuel known as biochar. With an increasing potential for biomass production coupled with an increased scrutiny on the use of biomass as a green fuel, the need for alternative clean applications for the biochar is critical. The aim of this study is to investigate new and novel agricultural residues or other waste streams to produce biochar using high temperature (350 °C) torrefaction technology. The obtained biochar is evaluated experimentally to determine the best feedstocks out of the ones that are selected from a performance and cost point of view for horticultural applications. . This research aims to provide a clear and useful analytical tool which will benefit the scientific community to select suitable biomass materials based on material properties and end applications. The efficacy for the various torrefied biomass feedstocks on the soil and its stability are tested. Overall, about 50 different biomass feedstocks were identified and evaluated based on past performances from literature. The top 10 best performing feedstocks were sourced and subjected to various physical and chemical characterization tests with a specific focus on soil remediation. The selected materials were torrefied in a fixed bed pilot reactor Scanning Electron Microscopy with Energy Dispersive X-Ray Spectroscopy (SEM-EDS), Brunauer–Emmett–Teller (BET) and pH measurements. Ultimately the feedstocks were scored and ranked from best to worst performing biochar for soil remediation and sequestration-based applications. The results of this project indicate potential for biochar production from woody, grassy and other processed materials that could help to remove the dependence on evergreen forests and wood chips. The system proposed in this work could also yield negative emissions since the feedstocks are residual flows and the biochar is going to be used in the soil.Electrical Engineering | Sustainable Energy Technolog
Deciphering the Potential of Pre and Pro-Vitamin D of Mushrooms against Mpro and PLpro Proteases of COVID-19: An In Silico Approach
Get PDFVitamin D’s role in combating the SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), the virus causing COVID-19, has been established in unveiling viable inhibitors of COVID-19. The current study investigated the role of pre and pro-vitamin D bioactives from edible mushrooms against Mpro and PLpro proteases of SARS-CoV-2 by computational experiments. The bioactives of mushrooms, specifically ergosterol (provitamin D2), 7-dehydrocholesterol (provitamin-D3), 22,23-dihydroergocalciferol (provitamin-D4), cholecalciferol (vitamin-D3), and ergocalciferol (vitamin D2) were screened against Mpro and PLpro. Molecular docking analyses of the generated bioactive protease complexes unravelled the differential docking energies, which ranged from −7.5 kcal/mol to −4.5 kcal/mol. Ergosterol exhibited the lowest binding energy (−7.5 kcal/mol) against Mpro and PLpro (−5.9 kcal/mol). The Molecular Mechanics Poisson–Boltzmann Surface Area (MMPBSA) and MD simulation analyses indicated that the generated complexes were stable, thus affirming the putative binding of the bioactives to viral proteases. Considering the pivotal role of vitamin D bioactives, their direct interactions against SARS-CoV-2 proteases highlight the promising role of bioactives present in mushrooms as potent nutraceuticals against COVID-19
Convex optimal control of constrained and periodic systems.
No full textIn the current global economy, chemical plants are being designed aggressively leading to increasingly complex designs. However various economic and ecological restrictions along with the process quality and quantity requirements pose strict constraints on the operating range of the plant. It is not uncommon to see various physical devices in the plant saturating, trying to meet these aggressive objectives. The performance of the plant as a result deteriorates under these unavoidable physical limitations. It is required that an efficient control strategy be developed for such scenarios which not only can guarantee a range of performance objectives but also explicitly accounts for the constraints. The focus of this thesis is to develop control algorithms for systems with input/output constraints and systems with cyclic behavior in a convex optimization framework.;A variety of control studies can be found in literature dealing with input constraints primarily categorised as anti-windup techniques. Most of these control algorithms primarily design a compensation which becomes active in the event of a constraint violation. A very few of these approaches pose the design problem in a convex optimization framework. In first half of this thesis, we present two distinct approaches to the problem of anti-windup compensation design which provide optimal synthesis techniques while establishing the stability criteria for the closed loop constrained systems. The piecewise approach to the anti-windup problem provides less conservative condition to establish stability by quantifying the effect of saturation, as opposed to the traditional techniques which use entire sector bound condition. Using one step design approach, we provide an algorithm in convex optimal framework to design both the linear controller and the anti-windup compensation simultaneously.;The second half of the thesis deals with repetitive/cyclic systems or systems which follow cyclic trajectory. Various approaches, e.g. Repetitive control, Iterative learning control, have been reported in literature. However these techniques do not incorporate input/output constraints which are a typical part of any chemical plant. In addition, lack of ability to handle qualitative/quantitative objectives makes these approaches less attractive. We propose in this thesis a control framework which explicitly identifies the repetitive behavior of these distinct systems while allowing for the incorporation of the frequently occurring input/output constraints. We pose the the stability conditions as convex inequalities to design optimal controller for such systems. Later, we propose to use cyclic control framework for Simulated Moving Bed reactor, a cyclic system and discuss associated challenges ranging from nonlinear process dynamics to modeling details
The State of Teacher Education in France: A Critique
No full textPradeep Kumar Misra, The State of Teacher Education in France: A Critique, FMSH-WP-2014-58, january 2014. Pour télécharger ce document sur HALSHS The author Dr. Pradeep Kumar Misra is an Associate Professor in the Faculty of Education and Allied Sciences of M.J.P. Rohilkhand University, Bareilly, India. His research specializations are Teacher Education, Educational Technology and Lifelong Learning. Acknowledgements I am extremely grateful to the Fondation maison des Sciences de l'Homme (FMSH..
The State of Teacher Education in France: A Critique
No full textPradeep Kumar Misra, The State of Teacher Education in France: A Critique, FMSH-WP-2014-58, january 2014. Pour télécharger ce document sur HALSHS The author Dr. Pradeep Kumar Misra is an Associate Professor in the Faculty of Education and Allied Sciences of M.J.P. Rohilkhand University, Bareilly, India. His research specializations are Teacher Education, Educational Technology and Lifelong Learning. Acknowledgements I am extremely grateful to the Fondation maison des Sciences de l'Homme (FMSH..
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