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Dissertations / Theses on the topic 'DUSO'

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Published: 10 March 2023

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1

Stiel, Caroline [Verfasser], Tomaso [Akademischer Betreuer] Duso, Astrid [Akademischer Betreuer] Cullmann, Tomaso [Gutachter] Duso, and Astrid [Gutachter] Cullmann. "German public utilities : organisation and productivity / Caroline Stiel ; Gutachter: Tomaso Duso, Astrid Cullmann ; Tomaso Duso, Astrid Cullmann." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1178524825/34.

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Le, Mouel Marie [Verfasser], Tomaso [Akademischer Betreuer] Duso, Tomaso [Gutachter] Duso, and Alexandra [Gutachter] Spitz-Öner. "Knowledge-based capital and firm productivity / Marie Le Mouel ; Gutachter: Tomaso Duso, Alexandra Spitz-Öner ; Betreuer: Tomaso Duso." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1185571639/34.

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Schäfer, Maximilian [Verfasser], Tomaso [Akademischer Betreuer] Duso, Hannes [Akademischer Betreuer] Ullrich, Tomaso [Gutachter] Duso, and Hannes [Gutachter] Ullrich. "Four essays on the economics of digitization / Maximilian Schäfer ; Gutachter: Tomaso Duso, Hannes Ullrich ; Tomaso Duso, Hannes Ullrich." Berlin : Technische Universität Berlin, 2020. http://d-nb.info/1224544390/34.

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Tran, Kevin Ducbao [Verfasser], Tomaso [Akademischer Betreuer] Duso, Hannes [Akademischer Betreuer] Ullrich, Tomaso [Gutachter] Duso, and Hannes [Gutachter] Ullrich. "Three essays on the economics of online platforms / Kevin Ducbao Tran ; Gutachter: Tomaso Duso, Hannes Ullrich ; Tomaso Duso, Hannes Ullrich." Berlin : Technische Universität Berlin, 2020. http://d-nb.info/1220774340/34.

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Affeldt, Pauline Luise [Verfasser], Tomaso [Akademischer Betreuer] Duso, Radosveta [Akademischer Betreuer] Ivanova-Stenzel, Tomaso [Gutachter] Duso, and Radosveta [Gutachter] Ivanova-Stenzel. "Three essays on the economics of merger control / Pauline Luise Affeldt ; Gutachter: Tomaso Duso, Radosveta Ivanova-Stenzel ; Tomaso Duso, Radosveta Ivanova-Stenzel." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1192370783/34.

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Lu, Anna Verfasser], Tomaso [Gutachter] Duso, and Justus [Gutachter] [Haucap. "Three Essays on Empirical Industrial Organization in Grocery Retailing / Anna Lu ; Gutachter: Tomaso Duso, Justus Haucap." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2017. http://d-nb.info/1140219758/34.

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Lee, Miyu Choon-Kyong [Verfasser], Ulrich [Akademischer Betreuer] Kamecke, and Tomaso [Akademischer Betreuer] Duso. "Three essays on the effectiveness of merger control / Miyu Choon-Kyong Lee. Gutachter: Ulrich Kamecke ; Tomaso Duso." Berlin : Humboldt Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2015. http://d-nb.info/1072460017/34.

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Lee, Miyu [Verfasser], Ulrich Akademischer Betreuer] Kamecke, and Tomaso [Akademischer Betreuer] [Duso. "Three essays on the effectiveness of merger control / Miyu Choon-Kyong Lee. Gutachter: Ulrich Kamecke ; Tomaso Duso." Berlin : Humboldt Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2015. http://nbn-resolving.de/urn:nbn:de:kobv:11-100230599.

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Lee, Miyu [Verfasser], Ulrich [Akademischer Betreuer] Kamecke, and Tomaso [Akademischer Betreuer] Duso. "Three essays on the effectiveness of merger control / Miyu Choon-Kyong Lee. Gutachter: Ulrich Kamecke ; Tomaso Duso." Berlin : Humboldt Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2015. http://d-nb.info/1072460017/34.

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Chow, Ashley E. "Dust." Thesis, Boston University, 2012. https://hdl.handle.net/2144/31527.

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Thesis (M.F.A.)--Boston University. Please note: creative writing theses are permanently embargoed in OpenBU. No public access is forecasted for these. To request private access, please click on the locked Download file link and fill out the appropriate web form.
2031-01-01
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Makuch, Martin. "Circumplanetary dust dynamics application to Martian dust tori and Enceladus dust plumes /." Phd thesis, [S.l.] : [s.n.], 2007. http://opus.kobv.de/ubp/volltexte/2007/1440.

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Darmenov, Anton. "Developing and testing a coupled regional modeling system for establishing an integrated modeling and observational framework for dust aerosol." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28217.

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Thesis (M. S.)--Earth and Atmospheric Sciences, Georgia Institute of Technology, 2009.
Committee Chair: Sokolik, Irina; Committee Member: Curry, Judith; Committee Member: Kalashnikova, Olga; Committee Member: Nenes, Athanasios; Committee Member: Stieglitz, Marc.
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Tierney, Matthew Frederick. "Summer dust." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1995. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/MQ30054.pdf.

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Tierney, Matthew Frederick. "Summer dust." Thesis, University of New Brunswick, 1994. http://hdl.handle.net/1882/803.

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Oravetz, Alysha Marie. "Moon dust." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6482.

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A dying man struggles to reconcile his life with the help of his family. Hank Schultz, a retired NASA director is living out his final days, with other notable men in history. Hank regrets his life changes, and must reconcile them before it's too late.
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Goodman, Michael Max. "Wasatch Front Atmospheric Deposition Reflects Regional Desert Dust and Local Anthropogenic Sources." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8256.

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Dust originating from dry lakes contributes harmful and toxic elements to downwind urban areas and mountain snowpack that is compounded by local contaminant inputs from anthropogenic sources. To evaluate dust contributions to an urban area from regional playas, we sampled playa dust sources, urban dust deposition, and snow dust deposition in central Utah, USA. Samples were analyzed for grain size, mineralogy, and chemistry. Bulk mineralogy between playa, urban, and snow dust samples was similar, with silicate, carbonate, and evaporite minerals. Grain size distribution between fine playa, urban, and snow dust particles was also similar. Elements found at high concentrations in playas include Li, Na, Mg, Ca, Sr, and U, and most other elements were found at higher concentrations in urban and snow deposition samples. Particularly enriched elements in dust deposition include Cu, Se, Ag, Cd, Sb, and La, which are sourced from industrial activity, mining, and vehicular emissions and wear. Based on results from mass balance modeling, a large majority of the dust mass deposited on the Wasatch Front is from playa sources. Urban and playa dust sources largely remain constant seasonally, although spikes in playa-associated element concentrations during a particular seasonal sample may indicate frequent and/or more intense dust events. Among the highly environmentally available elements B, Ca, Sr, and U, are Cd and Se, both of which present toxicity concerns for humans and environments. This is the first study describing heavy metal contamination and sources in Utah, USA.
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Matar, Hattan Saleh. "Evaluating dust exposure from steel manufacturing electrical arc furnaces." Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009matarh.pdf.

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Jia, Qi. "Dust from mining area and proposal of dust emission factors." Licentiate thesis, Luleå tekniska universitet, Geoteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18601.

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Mining generates great deal of particulate matter, especially for surface mining. The principle of dust generation is based on the theory of soil wind erosion. This thesis theoretically and experimentally dealt with mining dust. In chapter 1 the development of study on soil erosion by wind and mining dust were introduced. Chapter 2 elaborated the process of soil wind erosion. Soil motion during wind erosion is classified into three categories which are creeping, saltation and suspension. Threshold wind velocity, which initiates particle motion, depends on particle size, soil moisture, roughness element etc. Roughness element refers to non erodible fraction in a soil. A test on erodible fraction was included in this research.Chapter 3 presented effects and sources of mining dust. Sources include haul road, stockpiles, open surfaces, overburden removal etc. Malmberget mine operated by LKAB is one of the most important iron mines in Sweden. The mining area includes an area with huge open pit and current industrial center area. Both areas are surrounded by residential areas where people are suffering from dust problem. In this research the collected dust from 26 measuring stations during the time period Aug. 2009 to Aug. 2010 were used to calculate the dust fallout and distribution using surfer 9.0 software. It was concluded that two sources for dust generation were spotted. One was located close to the open pit, and the other was located nearby the current mining industrial center. It should be mentioned that the concentration of dust was varying with time. The maximum value happened on May in 2010. The value suddenly became extremely high compared with the other months. This was attributed to a road construction at that time. Analysis results have shown dust production around Malmberget mine was attributed to three reasons: wind erosion of the exposed area closed to the open pit, trucks transportation on haul roads, and wind erosion of stockpiles. Since the mining activities were relatively going at a constant level, the variations of dust level were mostly attributed to the climatic factor. During the research erodible fractions for surface samples from the open surface nearby the open pit were measured. The result showed an erodibility index of 4.69kg/m2 per year. Because the index value indicated relatively low intrinsic soil erodibility, the dust problem might be more contributed by wind erosion of stockpiles and truck travelling on haul roads.Chapter 4 introduced how US EPA developed dust emission factors for various mining activities. Accordingly recommendations and the future plans for the establishment of the dust emission factors for Malmberget mine in Sweden were given and highlighted in chapter 5. Chapter 6 finalizes the thesis with a conclusive paragraph.
Godkänd; 2011; 20110516 (qijia); LICENTIATSEMINARIUM Ämnesområde: Geoteknik/Soil Mechanics and Foundation Engineering Examinator: Professor Sven Knutsson, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Diskutant: Professor John McManus, St. Andrews University, United Kingdom Tid: Måndag den 3 oktober 2011 kl 10.30 Plats: F531, Luleå tekniska universitet
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Levine, Nicole. "Cities in Dust." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/3020.

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Cities in Dust is a collection of 15 short stories and the first two chapters of Biggest Little City, a novel-in-progress. This collection looks at queerness, gender, sex work, addiction, illness, and the effects of displacement--leaving homes, cities, relationships, and theoretical safety before we are ready. Cities in Dust works to tell stories from the space between places and the moment between moments. Transition is a city of its own.
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Jackson, Elizabeth Wood. "Driving Through Dusk." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-03132009-145003/.

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Patel, Rushik, and Ajay Kumar. "Dust extractor solution." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37979.

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The following report conducted with the collaboration of the University of Halmstad and HGFrubber company (Halmstad).The focus on the project is eliminating the dust particles from the inner surface of the EPDM basedrubber module.As a part of improving knowledge about the quality and surface finishing and understanding thematerial’s characteristics. This project initiated in February 2018 and end date was set to August2018.The methodology used in this project is based on the Six-Sigma tools which is widely appreciatedglobally to obtain the Zero-defect production.The implementations of this method and other tools are efficient and beneficial to reduce thedefects in the production without compromising the initial quality of the product.This thesis resulted in a quality improvement approach for eliminating the dust using methods suchas Six-Sigma and 5 why’s.
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Feldman, Jason. "Kicking up dust." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/8086.

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Moore, Tyler Nicholas. "Like the Dust." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306169688.

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Gunby, Matthew Clarke. "Ground to Dust." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1459515242.

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DeZeeuw, Zane Truman. "Run Me Dusk." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/3043.

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This is a full-length novel with a critical afterward. Run Me Dusk is a falling-out of love narrative about twenty-seven-year-old Milo who, after being broken up with by his boyfriend Red, flees from Illinois back to his hometown in southwestern Colorado to meditate on his place and purpose in life. The themes covered in this book are gay relationships, family relationships, mortality, and the natural world.
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HOBBS, KLARA. "DUO." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17360.

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This report deals with the definition and meaning of garment. It explores how the meaning of a garment alters depending on how it is worn. Is the meaning of an garment somhow in the garment itself? By searching for new expressions in clothing by eliminat- ing parts and giving other a new purpose, the aim is to explore the aesthetic potential that occurs when two garment’s are incorporated. This is dealt with through a method that discusses the definition of an artefact. From a minimalistic point of view the es- sence of garments is explored through revealing what is underneath and exemplifying how the garments interact or affect each other. Through experiments I studied how to incorporate two garments in an natural and unforced manner. To find perfect balance in imbalance. As a conclution of my work i discovered that to create balance between two garments was to use the details discreatly and to focus on the small things. However I realised that the “perfect“ balance was not the aim i was striving for. Questions that has been discussed is how much does a garment need to be recognisable and how much does a detail need to be visable. As a method I see this as the starting point and there is more to be explored and developed.
Program: Modedesignutbildningen
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JAKSETIC, TERESA. "Duo." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17420.

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It started with an idea of making garments more human. The hope was to give them stories to tell and to let them affect the one who wears them, to make the wearer feel something. The method was to investigate all kinds of dual relationships, good and bad, between all sorts of people: The drama of every day life.
Program: Modedesignutbildningen
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Vijh, Uma Parvathy. "Photoluminescence by Interstellar Dust." See Full Text at OhioLINK ETD Center (Requires Adobe Acrobat Reader for viewing), 2005. http://www.ohiolink.edu/etd/view.cgi?toledo1122478565.

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Thesis (Ph.D.)--University of Toledo, 2005.
Typescript. "A dissertation [submitted] as partial fulfillment of the requirements of the Doctor of Philosophy degree in Physics." Bibliography; leaves 209-225.
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Farrell, Jessica. "Buried in the dust." Honors in the Major Thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/844.

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In July 2012, I left America for the first time to travel to Madurai, India, for a month-long journalism internship. The inspiration for the poetry in this work is deeply rooted in my experiences while in India, mentally, physically, and spiritually. Not knowing why I chose India to travel to for my first time abroad, I realized much later that I needed to be there in order to transition into the next stage of my life. I always wanted to experience what life was like without the amenities the Western world is accustomed to (hot showers, washers and dryers, reliable electricity, etc.). Through isolating myself from the familiar I woke up to a simpler, happier perspective on life. This isolation also stirred mixed emotions in me that I wasn't aware of until I began writing about the experience in these poems. The feeling of being watched by everyone was common and sometimes frightening or disturbing. This vulnerability was uncomfortable even though the experiences and realizations I had outweighed the negativity while I was in India. The intent of this thesis is to explore how I've grown and what I took from the trip while comparing my Indian experience to life before and after my visit. With unconventional structural elements, I set out to put life and movement on the page to represent the chaotic, beautiful India and the emotions that carried the weight of each poem. Just from one month of being surrounded by strangers who stared with stone eyes, a language I didn't understand and memories of a life I didn't miss as much as I thought I would, this thesis follows the imaginative perceptions of a sleeping person through her evolution into a waking life.
B.A.
Bachelors
Arts and Humanities
English
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Autricque, Adrien. "Dust transport in tokamaks." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0315/document.

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Les nombreux avantages que présenteraient la fusion thermonucléaire, en particulier la configuration tokamak, en font un candidat idéal en vue de la transition énergétique. Cependant, un certain nombre de difficultés technologiques et physiques restent à résoudre avant que l'étape d'une centrale électrique à fusion puisse voir le jour. La production de poussières est l'une des principales difficultés rencontrées dans les tokamaks. Ces petites particules composées de matériaux présents dans les parois de la machine sont créées par l'érosion de ces parois par le plasma dans lequel les réactions de fusion doivent avoir lieu. Les poussières peuvent être transportées dans le plasma et y libérer de grandes quantités d'impuretés, ce qui a pour conséquence de baisser les performances de la machine (en augmentant les pertes radiatives et en créant des instabilités), et qui peut mettre en danger les composants face au plasma. Dans le but de comprendre le transport de ces poussières, des expériences d'injection sont réalisées sur le tokamak coréen \KSTAR. Les trajectoires des poussières dans le plasma sont observées par des caméras rapides et sont extraites des films à l'aide de routines de traitement d'images. Un code numérique implémentant les derniers modèles d'interactions plasma-poussières est développé, et des comparaisons avec les données expérimentales sont faites, confirmant la tendance générale de ces modèles à la sous-estimation de la longueur des trajectoires des poussières. Des pistes d'amélioration sont présentées. Concernant les sources et puits de poussières, l'accent est porté sur l'adhésion et remise en suspension de particules sur les parois de la machine
Thermonuclear fusion could play an important role amongst the numerous alternative energy sources, especially though the tokamak configuration. It could be a prime candidate for the energy transition, owing to its significant advantages (fuel abundance, low amount of wastes generated, low risks of accidents). However, a certain amount of technological and physical challenges require solving before any fusion power plant can be built. Dust production is one of the major difficulties encountered in tokamaks. These small particles, made out of wall material, are created by erosion of the plasma-facing components by the plasma, where the fusion reactions occur. Dust particles can be transported in the plasma, thereby unleashing large amounts of impurities, which in turn reduces the plasma performances (by raising radiative losses and generating instabilities) and can even jeopardize plasma-facing components. Aiming to understand dust transport, injection experiments are performed on the Korean tokamak \KSTAR. Trajectories are recorded on film via fast cameras and are extracted by image processing routines. A numerical tool implementing the latest models for dust-plasma interactions is developed, and comparisons with experimental data is made, confirming the overall tendency of these models to underestimate the trajectory lengths. Leads of improvements are presented. Concerning dust sources and sinks, the focus is made on dust adhesion and resuspension of dust on the machine walls
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Avendaño, Gil Gianfranco Emilio, Durand Daniel Antonio Bazán, Fajardo Rodrigo Alonso Maza, Bustamante Juan Diego Ochoa, and Paredes Maria Elizabeth Torres. "Fertilizante Natural: Agro Dust." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/652428.

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El presente proyecto se basa en la producción y comercialización de fertilizante natural y biodegradable, que sirve como bio-estimulante para las plantas ornamentales, teniendo como valor adicional ser un retenedor de agua de riego durante 20-21 días aplicando una sola vez el producto. Elaborado a base de cáscara de naranja y palta, nuestro negocio va dirigido a habitantes de Lima Moderna correspondientes a los estilos de vida conservador, moderno y sofisticado que posean plantas y/o pequeños jardines pertenecientes a los niveles socioeconómicos (NSE) A, B y C, además de mostrar preocupación por el medio ambiente. El empaque del producto va a ser una bolsa de papel kraft biodegradable con una capacidad 250 gramos. Se realizó una total de entrevistas a 30 personas para validar la existencia del problema encontrado y el interés e intención de uso del producto de nuestros posibles clientes. Además, con fines de hacer este proyecto escalable para el rubro de la agricultura, se contactó a dos expertos en agronomía para validar el producto y algunos aspectos sobre la posible escalabilidad de este. El desarrollo del proyecto se encuentra dividido en dos puntos, los cuales son la validación del plan de negocio y desarrollo del plan de negocio. Para la ejecución del proyecto se requirió una inversión de 21,454 soles, obtenidos a base de capital propio de los accionistas, quienes estiman recuperar dicha inversión en el primer año de operación. La rentabilidad brindada a los accionistas es de 249% lo cual hace nuestro proyecto un negocio rentable.
The present project is based on the production and commercialization of natural and biodegradable fertilizer, which serves as a bio-stimulant for ornamental plants, with the additional value of being a water retainer for 20-21 days by applying the product once. Made with orange and avocado peel, our business is aimed at inhabitants of Modern Lima corresponding to conservative, modern and sophisticated lifestyles that have plants and / or small gardens belonging to socioeconomic levels (NSE) A, B and C, in addition to showing concern for the environment. The product packaging is going to be a biodegradable kraft paper bag with a capacity of 250 grams. A total of interviews were conducted with 30 people to validate the existence of the problem encountered and the interest and intention of using the product of our potential customers. In addition, in order to make this project scalable for the field of agriculture, two agronomy experts were contacted to validate the product and some aspects of its possible scalability. The development of the project is divided into two points, which are the validation of the business plan and development of the business plan. For the execution of the project, an investment of 21,454 soles was required, obtained based on the shareholders' own capital, who consider recovering said investment in the first year of operation. The profitability provided to shareholders is 249% which makes our project a profitable business.
Trabajo de investigación
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Yip, Tin-wai Viola. "Out of the Dust." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1354679861.

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Harrison, Daniel R. "Between Dust and Being." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1491558904033591.

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Larsson, Britt-Marie. "Induction of a non-allergic inflammation in the human respiratory tract by organic dust /." Solna : National Institute for Working Life (Arbetslivsinstitutet), 2001. http://diss.kib.ki.se/2001/91-7045-603-8/.

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Ben, Moussa Rim. "Contribution to thermal radiation to dust flame propagation : application to aluminium dust explosions." Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2401/document.

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Ces travaux de thèse sont consacrés à l’examen du rôle du rayonnement thermique dans le processus de propagation des flammes issues de la combustion des particules d’aluminium dans l’air. Le sujet étant complexe et d’un intérêt industriel, il nécessite de prendre en compte le couplage de nombreux phénomènes physico-chimiques afin de prédire finement les conséquences des explosions de poussières. Une analyse bibliographique approfondie est proposée, concernant les mécanismes d’inflammation et de combustion des particules d’aluminium et aussi concernant les connaissances relatives à la propagation des flammes de poussières. La question spécifique de la nature des échanges thermiques et de l’influence du rayonnement thermique est étudiée. La revue bibliographique souligne les approximations et les hypothèses simplificatrices utilisées dans la littérature permettant donc de définir les pistes d’améliorations. Compte tenu des limitations importantes concernant la physique de ces flammes, un outil de simulation de physique numérique nommé « RADIAN », proche de la simulation numérique directe, a été développé proposant un couplage fin entre les différents modes d’échanges thermiques et la combustion pour modéliser la propagation de la flamme dans un nuage de poussières. La méthode des éléments discrets (MED) est utilisée pour modéliser numériquement les échanges radiatifs entre les particules et les échanges conductifs entre gaz et particules. La méthode des différences finies est utilisée pour modéliser numériquement la conduction thermique dans la phase gazeuse et la combustion. Un modèle radiatif est proposé se basant sur la théorie de Mie sur les interactions rayonnement-particules. Les résultats des simulations sont comparés avec des solutions analytiques et des données expérimentales de la littérature. Mais en plus, une étude expérimentale est aussi conduite afin de mesurer la distribution du flux radiatif devant la flamme et la vitesse de combustion laminaire pour des flammes Méthane-Sic, Méthane-Alumine et Al-air. Un bon accord entre les simulations et les expériences est démontré. La loi de Beer-Lambert relative au transfert radiatif devant le front de flamme s’avère inapplicable et une nouvelle solution analytique est proposée. La présence de particules absorbantes du rayonnement promeut la propagation de la flamme. En particulier, il a été montré expérimentalement et confirmé numériquement que les mélanges riches d’AL-air sont susceptibles d’accélérer rapidement
In this thesis, the role of thermal radiation in aluminum-air flames propagation is studied. The subject being complex and of industrial interest, it requires the coupling of many physiochemical phenomena to accurately predict the consequences of dust explosions. A thorough literature review is proposed about the ignition and the combustion of aluminum particles and about the available theoretical models of dust flames propagation. The specific question of the nature of thermal exchanges and the influence of thermal radiation is studied. The bibliographic review underlines the simplifying assumptions and hypotheses used in the literature making possible the definition of improvement areas. Because of the limited amount of knowledge available to address these questions, a numerical tool “RADIAN” is developed enabling an accurate coupling between the different modes of heat exchange and combustion. The Discrete Element Method (DEM) is used to numerically model the radiative exchanges between particles and the gas-particle thermal conduction. The Finite Difference method is used to numerically model the thermal conduction through the gas phase and combustion. A radiative model based on Mie theory for radiation-particles interactions is incorporated. The results of the simulations are compared with available analytical solutions and experimental data. An original experimental study is also conducted to measure the distribution of irradiance ahead of the flame front and the laminar burning velocity for methane-air-Sic, methane-air-alumina and Al-air flames. A good agreement between numerical simulations and experiments is demonstrated. The Beer-Lambert’s law for radiative transfer in front of the flame front is found to be inapplicable and a new analytical solution is proposed. The presence of absorbing particles may promote the flame propagation. In particular, it is shown experimentally and confirmed theoretically/numerically that Al-air rich mixtures are likely to rapidly accelerate
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36

Ntreh, Benjamin Abotchie. ""Dust To Dust, Earth To Earth, Ashes To Ashes"- Origins Of A Christian Practice." Bulletin of Ecumenical Theology, 1996. http://digital.library.duq.edu/u?/bet,520.

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37

Kerr, Devin. "Migration during the Dust Bowl /." Online version of thesis Thesis game website, 2007. http://hdl.handle.net/1850/5713.

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38

Elfgren, Erik. "Dust in the early universe." Licentiate thesis, Luleå, 2005. http://epubl.luth.se/1402-1757/2005/17.

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39

Elfgren, Erik. "Cosmic dust and heavy neutrinos." Doctoral thesis, Luleå : Department of Applied Physics and Mechanical Engineering, Division of Physics, Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1544/2007/75/.

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40

Morgan, Haley Louise. "Origin and evolution of dust." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/54541/.

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Interstellar dust affects our view of the Universe, with half of the starlight emitted since the Big Bang being absorbed by dust grains and re-radiated in the Infra-Red. This thesis is concerned with understanding the origin of interstellar dust and determining the relative importance of different dust formation sites in the Universe. The sources and maximum amount of dust in early galaxies are investigated using published extended atmosphere models, stellar evolution tracks and nucleation conditions. A chemical evolution model is modified to include the estimated condensation efficiencies. The implications are investigated and we show that a supernovae source is required to produce large amounts of dust in galaxies. The atmospheres of AGB stars evolve too slowly to be responsible for high redshift dust. If SNe are not responsible for dust, then significant dust masses can only be generated at z > 5 by galaxies with very efficient star formation and no dust destruction. The first sub-millimetre analysis of the galactic remnant Kepler is presented with 0.3 3 M0 of dust, depending on the absorption properties. This a 1000 times more than previous Infra-red observations found. The sub-mm emission anti-correlates with the other wavelengths, including the warm dust and the most likely origin is from freshly synthesised dust in the supernova and dust formed from the interaction of the supernova shock with the ambient medium. Iron needles as a possible origin of the sub-mm emission are investigated. Finally, the sub-mm observations of the massive LBV star, rj Carinae are presented to show that the winds of massive stars may also be important contributors to the dust budget. We conclude that supernovae, or their massive star progenitors, are a dominant contributor to interstellar dust and make suggestions for future work.
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41

Schlafly, Edward Ford. "Dust in Large Optical Surveys." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10265.

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We present results studying the distribution and properties of the diffuse dust in the Milky Way Galaxy using large optical surveys—specifically, the Sloan Digital Sky Survey (SDSS) and the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1). This work has resulted in accurate measurements of dust reddening in regions of low extinction over large regions of sky. We present maps of reddening from dust covering the footprint of the SDSS, which covers one quarter of the sky. We present preliminary maps of dust covering the Pan-STARRS1 footprint, which covers three-quarters of the sky, including most of the plane of our Galaxy. We use these maps of dust to decisively exclude some simple parameterizations of dust extinction (Cardelli et al., 1989) in favor of others (Fitzpatrick, 1999). We show that the extinction predicted by the widely-used far-infrared dust map of Schlegel et al. (1998) is overestimated by 18%, and recalibrate that map using our extinction measurements. We further map variation in the properties of the dust, as indicated by variation in the amount of extinction relative to the amout of far-infrared dust extinction, and by variation in the ratio of dust extinction at different frequencies. We confirm these results by measuring reddening using two independent techniques and data sets, the SDSS photometry and spectroscopy. We further present the photometric calibration of the Pan-STARRS1 data—a necessary step to studying the dust with that ongoing survey. We achieve photometric precision unprecedented in a large optical survey, accurate to better than 1%. We additionally show the suitability of the calibrated photometry for studying the distribution of dust. Finally, we present preliminary three-dimensional maps of the dust in the Galaxy using our calibrated data from Pan-STARRS1. These maps will provide by far the most extensive information yet achieved about the three-dimensional distribution of extinction in the Galaxy.
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42

Lim, Ceceña Jonás. "Instalación de Disco Duro Virtual." Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lni/lim_c_j/.

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T-Systems es una multinacional alemana fundada en Octubre del año 2000 perteneciente al grupo alemán Deutsche Telekom, el cual cuenta con T-Systems como principal motor de la innovación dentro del grupo para dar forma y mejorar el futuro de la red en los negocios y la sociedad; creando valor para los clientes, empleados e inversionistas, gracias a soluciones innovadoras de Tecnologías de información y comunicaciones (TIC). Con una infraestructura de centros informáticos y redes a nivel mundial, T-Systems ofrece tecnologías de la información y de comunicación (TIC) a medianas y grandes empresas, instituciones públicas y organizaciones multinacionales. El portafolio de Soluciones en T-Systems, da un valor agregado a sus clientes, ya que satisface todas las necesidades dentro de la rama de las tecnologías de información y comunicación. Algunos de los servicios que ofrece la compañía a sus clientes son: La integración de sistemas (SI), Administración de aplicaciones (AMS) y servicios de SAP. Este tipo de servicios dan soluciones integrales a negocios en relación a la planeación e integración de recursos empresariales. Dentro del departamento de SAP, Mckesson hace operaciones de outsourcing con T-Systems, empresa norteamericana, dedicada a la fabricación y distribución de medicamentos en los Estados Unidos. En esta área se me asignó un proyecto el cual consiste en: organizar, reunir y brindar la información pertinente del departamento, por lo tanto se generará un disco duro virtual. En la actualidad el área de SAP tiene un problema con el acceso a la información, ya que esta esparcida en varias divisiones, haciendo difícil su búsqueda para los empleados y dueños, por lo que es importante hacer un disco duro que facilite la obtención de la información mediante internet. Este proyecto generará un impacto favorable, haciendo que la información fluya de manera más efectiva, y así lograr que esta llegue de manera rápida y sencilla a las partes que la requieran. Por decisión propia analicé la situación en la que me enfrentaba, y decidí realizar un proyecto en el departamento de SAP. En conjunto con el jefe del departamento, se me asignó el proyecto de recopilar, almacenar, organizar, compartir y plasmar la información en un disco duro virtual. Esta propuesta se hace con la finalidad de aprovechar los recursos tecnológicos y la infraestructura de la empresa para que el equipo de trabajo tenga la facilidad de acceso a la información y de obtener datos, fotos, videos y documentos pertenecientes al departamento. Así con esto se optimizará el desempeño del área y del personal que la integra. Las razones por las que escogí el disco duro virtual, se basan básicamente en las ventajas que ofrece, por ejemplo: Sistema de almacenamiento: todo los integrantes del departamento tendrán acceso a la información desde cualquier ordenador. Interfaz: La navegación dentro del disco no es complicada, ya que la apariencia del sistema de carpetas es muy similar al de cualquier sistema operativo. La sincronización de archivos: Cualquier cambio, actualización o corrección que se realicé, se verá reflejado en el disco duro virtual. Compartir archivos: Mediante varias opciones, por ejemplo vía correo electrónico. Capacidad de almacenamiento: Dependiendo del disco duro virtual que se escoja, se tendrá almacenamiento de información gratuita. Hoy en día el acceso a la información es la llave para la toma de decisiones dentro de una empresa, sin el control de la información, se navega sin rumbo fijo al momento de tener que elegir la opción que mejor le favorezca a la empresa. Con este proyecto pretendo hacer más eficiente el proceso de búsqueda y obtención de la información en el departamento de SAP, así como también ayudar a facilitar y mejorar la toma de decisiones, por lo que los gerentes y empleados obtendrán resultados favorables ya que poseerán información en tiempo real, logrando una mejor planificación, y ejecución de las decisiones a tomar. También espero que me ayude a conocer el impacto e importancia que tiene la información dentro de una empresa, esto con el objetivo de que al momento de emprender mi propia empresa en el futuro, me percate en tomar en consideración este factor decisivo de obtención y análisis de la información.
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43

Middleton, Nick. "The geography of dust storms." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:9e98cc16-7a43-4ef8-9526-3e4c064b108a.

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Dust storms have a great many environmental implications in the world's dry lands where they are particularly common. Four main classes of dust event are identified and defined: dust storms, dust haze, blowing dust and dust devils. The geography of dust storms is analysed in each of eight major world regions: Africa, the Middle East, South-west Asia, Europe and the USSR, China, Australia, North America and Latin America. Terrestrially observed meteorological data and data from remote sensing platforms are employed to identify the major source areas in each region, their seasonality, diurnal patterns of activity and trajectories of long-range transport. Among the important controls on the frequency distribution of dust storm activity are the meteorological conditions that generate dust-raising winds, and a number of meteorological systems commonly cause dust storms in all global regions. These include low pressure fronts with intense baroclinal gradients, pressure gradient winds between moving or stationary air masses, katabatic winds and convectional cells. The nature of the surface upon which deflation occurs is also important; typical dust-producing geomorpholological units include alluvial spreads, lacustrine deposits, desert depressions, loess deposits and reactivated fossil dunes. Dust storm activity is prone to considerable variation. The seasonal characteristics are explicable with reference to the meteorological systems generating dust, the state of ground cover, particularly vegetation, and the effects of seasonal rainfall. Substantial variations also occur from year to year, and land use and climatic variations can substantially affect their occurrence.
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44

Jimoh, W. L. O. "Analytical studies of Harmattan dust." Thesis, Bucks New University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371226.

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45

Li, Xiwei. "Dust problems in animal buildings." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239057.

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46

Ponczek, Milena. "Understanding Atmospheric Mineral Dust Photochemistry." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1190.

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Les minéraux absorbent la lumière proche des UV (comme TiO2, Fe2O3, MgO) présents dans les aérosols minéraux interagissent avec les gaz traces présents dans l'atmosphère et peuvent initier une nouvelle chimie hétérogène photo-induite potentiellement significative et actuellement peu documentée. Cette thèse vise à aborder différentes questions sur la réactivité des poussières minérales vers les composés organiques et évaluer l'impact de ces interactions sur plusieurs aspects des sciences de l'atmosphère. Nous avons étudié expérimentalement l'interaction physico-chimique d'aérosols minéraux, purs ou revêtus de matériaux organiques/inorganiques avec des gaz traces de plusieurs familles chimiques (alcools, cétones, acides carboxyliques), dans des conditions simulées proches de l'environnement reel (concernant l'humidité, la concentration en phase gazeuse, la longueur d'onde et l'intensité de l'irradiation, la pression et la température) évaluant les effets des conditions ambiantes sur la cinétique de capture et la génération de produits en phase gazeuse. Dans l'ensemble, nos résultats montrent clairement que les reactions photochimique des poussières minérales doit être considéré comme une source de composés réactifs et comme un processus clé affectant leur action sur la nucléation de la glace et les noyaux de condensation des nuages
Minerals that absorb light near UV/Vis present in dust aerosols interact with trace gases in the atmosphere and can initiate a new and potentially significant photo-induced heterogeneous chemistry, which is currently poorly documented. This thesis aims to address different issues of mineral dust reactivity towards organic compounds and, therefore, assesses the impact of these interactions on several aspects of atmospheric sciences. We investigated experimentally the physicochemical interaction of mineral aerosols (synthetic and natural), pure or coated with organic/inorganic materials with trace gases from several chemical families (alcohols, ketones, carboxylic acids, etc.), under simulated conditions close to the real environment (regarding to humidity, concentration in the gas phase, wavelength and intensity of irradiation, pressure and temperature). In a first approach, we studied the uptake of oxygenated organics onto different dust proxies such as SiO2, TiO2 and Arizona test dust (ATD) evaluating the effects of ambient conditions on the uptake kinetics and product generation. Then, we discussed the chemistry of 5 dicarboxylic acids (C4-C8) on ATD particles upon UV-A irradiation monitoring products in the gas phase as well as those whose stay adsorbed on the particulate phase. Lastly, we investigated the influence of nitrate anions on the uptake of acetone on ATD and SiO2 and in the photochemical product formation of glutaric acid on ATD. Overall, our results clearly show that photochemical processing of dust aerosols should be considered as a source of reactive compounds and as a key process affecting their action as ice nucleation and cloud condensation nuclei
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47

Carballido-Somohano, Augusto Bernardo. "Dust dynamics in protoplanetary discs." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614038.

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48

Hanson, Maryam. "Study on Smart Dust Networks." Thesis, Linköpings universitet, Elektroniska Kretsar och System, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-125199.

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This thesis work is done for the department of Electronic System at The Institute of Technology at Linköping University (Linköpings Tekniska Högskolan). Study's focus is to design and implement a protocol for smart dust networks to improve the energy consumption algorithm for this kind of network. Smart dust networks are in category of distributed sensor networks and power consumption is one of the key concerns for this type of network. This work shows that by focusing on improving the algorithmic behavior of power consumption in every network element (so called as mote), we can save a considerable amount of power for the whole network. Suggested algorithm is examined using Erlang for one mote object and the whole idea has put into test for a small network using SystemC.
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49

Dust, Julian [Verfasser]. "Täterschaft von Verbänden. / Julian Dust." Berlin : Duncker & Humblot, 2019. http://d-nb.info/1238486517/34.

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50

Pierotti, Gian. "A Voice from the Dust." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/2441.

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We shall not starve. We shall not lack shelter. We shall have a hearth. Awake self reliance! Our art is for feeding, warmth, protection. Ceramics– our temporal salvation. Clay– our material life-force. Transformed by fire we arise with the skills of the ancients! No longer will we live in obscurity. To the deskilled, your fate is at hand! You have chosen alienation, distraction, banality, and sloth. Embrace your digital false Gods and die or be reborn to the natural physical world. Now, together we complete our reason for being. We create a new world of kinship. A hope for the utopia not of rigid modernism but one of a new world, a rediscovery of the natural order.
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