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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Cyclonic dewatering of oil

Smyth, Ian Charles January 1988 (has links)
No description available.
2

Make_Grow.Live: Creating a sustainable reuse typology by anticipating transportation's evolution

January 2018 (has links)
We are on the brink of a major transportation revolution. Once a country devoted to the car, America has begun to push private car ownership away. Public transportation has reached new ridership highs since the 50s, and a new social paradigm of sharing has buoyed ride sharing and car sharing to some of the most profitable businesses in the world. This fact, coupled with breakthroughs in advanced transportation technology, signal a new area in transportation. The introduction of these new transportation typologies poses to have a major impact on the future of the city. The quest for efficiency and convenience drive these advances and it will begin to push current parking infrastructure further toward irrelevance. This will increase the already overabundant, but underused, parking spaces and parking structures while illustrating the superfluous size of many urban streets. The once overcrowded parking structures are now empty and lifeless, creating a void in the hearts of many cities. Anticipating this change creates an unique opportunity to upcycle these once banal symbols of urban infrastructure into lively and beneficial environments. Growing up surrounded by nature and fresh, family grown food, I have learned to appreciate the benefits of rural living. Experts, and I, believe that living in or even viewing nature has many physiological and physiological benefits. Introducing this way of life into a dense urban setting to replace unused space with a sustainable alternative will shift city life toward a healthier and more sustainable future. The introduction of nature will humanize these once tepid concrete expanses. Although advances in technology are the catalyst for the availability of these structures, it is the return to the simplicity and pureness of natural life that will create a healthy and sustainable city. Small scale traditional farming incorporated with multi-family living fulfills the need for more housing but also provides the residents of the neighborhood with the ingredients to create a sustainable community. This program utilizes the parking structure's inherent characteristics to provide needed housing while encouraging a sustainable way of life. / 0 / SPK / specialcollections@tulane.edu
3

Removing elected officials from office: the use of the recall in Georgia

Orr, Marion E. 01 July 1987 (has links)
This thesis examines the effectiveness of Georgia's "Public Officers Recall Act" as a tool for Georgians seeking to remove elected officials from office. The methodology employed in this study is the case study approach. The results of this study indicate that Georgia's recall law is effective. The results are significant because they indicate that voters in Georgia have an effective means to challenge and oust elected officials who are no longer satisfactory to them.
4

An experimental study on removing efficiency of surface roughness for hydrodynamic polishing process

Lui, Song-He 25 July 2000 (has links)
Abstract The removing efficiency of surface roughness for the hydrodynamic polishing process under semi-contact lubricating condition was investigated in this thesis. The experimental relationships between surface roughness and polishing were first examined. From the relationships, the potential influential factors of the removing efficiency and the magnitude of surface roughness were identified. Finally, a mathematical model that was related to the removing efficiency and the magnitude of surface roughness was proposed. Based on the experimental study, it was shown that the surface roughness would be rapidly reduced at the beginning by polishing process and then hardly improved afterward. This trend implied that surface roughness would not be completely removed during the polishing process. It was proposed that the amplitude and wavelength of surface roughness would affect the removing efficiency of surface roughness. Further, the removing efficiency was not sensitive to the tool velocity. From the mathematical model, several points were concluded. First, the removing efficiency was positively proportional to the amplitude of surface roughness. Second, the removing efficiency was inversely to the amplitude of surface roughness. Third, the removing efficiency was inverse proportional to a waviness of tool surface. Fourth, the removing efficiency was not sensitive to tool velocity. Finally, there existed an achievable minimum surface roughness for a surface with specific wavelength. The magnitude of a minimum surface roughness was shown to be proportional to the wavelength of work surface.
5

Removing Oil from Fried Foods via Mechanical Process

Chow-Yee, Yufay 01 June 2016 (has links)
Fried foods are delicious and enjoyed by almost everyone. However, they are not the healthiest foods to eat because of the amount of oil they contain. This thesis, sponsored by Moaero Company founder, Mr. Harrish Bhutani, intends to determine whether a simply designed centrifuge system can remove a reasonable amount of oil from fried foods after it has been deep fried without adversely affecting the texture of the fried food. Due to a large variety in the texture as well as the type of fried foods, and in order to keep the scope of this thesis more focused and feasible, the focus of this investigation will be French fries. Three variables are tested: the type of fry, the angular velocity of the centrifuge, and the time spent in the centrifuge. Multiple designs for the centrifuge system were made on SolidWorks. Engineer Equation Solver (EES) was used to aid steady state and transient heat transfer calculations. Minitab was used for statistical analysis. The impact of various parameters on the change in mass of the French fries, as a measure for evaluating the oil content, were studied. The results indicate whether a centrifuge will remove a reasonable amount of oil while also considering the integrity of the fries. The study concludes that centrifugation is be a cost-effective method for removing oil from fried foods.
6

Simulační modelování soustrojí dmychadla / Simulation modelling of blower system

Gajdík, Michal January 2015 (has links)
This diploma thesis is focused on simulation modeling of Roots blowers, which are produced by Kubicek VHS company. First part of this thesis is about oscillations and its damping. In following phase are analyzed each methods realization and control of oscillation damping. Second part of this thesis is focused on Roots blower modelling with rigid and flexible parts and its verification. Output of this thesis is dynamic analysis of Roots blower 3D28C. On attached CD are program annex and project in Adams MSC. Aim of this thesis is proposing adjustments, which would reduce noise and vibration of analyzed machine.
7

Odstranění nežádoucích objektů ve videosekvencích / Removing of Unwanted Objects in the Videosequences

Vagner, Ondřej January 2012 (has links)
The aim of this work was to develop an automated methods for removing unwanted objects from video sequences. The proposed method is able to autonomously tackle the static and the moving object with no user intervention into the process. The user only determines the object to deleted.
8

Nutrient removal with integrated constructed wetlands : microbial ecology and treatment performance evaluation of full-scale integrated constructed wetlands

Mustafa, Atif January 2010 (has links)
Wastewaters from intensive agricultural activities contain high concentrations of nitrogen and phosphorus that contributes to water management problems. During the past few years, there has been considerable interest in the use of constructed wetlands for treating surface water runoff from farmyards. If the contaminated runoff is not treated, this wastewater along with other non-point sources of pollution can seriously contaminate the surface water and groundwater. Integrated Constructed Wetlands (ICWs) are a type of free water surface wetlands. They are engineered systems that are designed, constructed and operated successfully for treating farmyard runoff in the British Isles. However, the long-term treatment performance of these systems, the processes involved in contaminant removal and the impact on associated water bodies are not well-known. The aims of this project were to assess the performance of full-scale integrated constructed wetlands and understand nutrient removal in them. Performance evaluation of these systems through physical, chemical and microbiological parameters collected for more than 7 years showed good removal efficiencies compared to international literature. The monitored nutrient concentrations in groundwater and surface waters indicate that ICW systems did not pollute the receiving waters. The role of plants (Typha latifolia) and sediment in removing nutrients was also assessed. More nitrogen and phosphorus were stored in wetland soils and sediments than in plants. The results demonstrate that the soil component of a mature wetland system is an important and sustainable nutrient storage compartment. A novel molecular toolbox was used to characterise and compare microbial diversity responsible for nitrogen removal in sediment and litter components of ICW systems. Diverse populations of nitrogen removing bacteria were detected. The litter component of the wetland systems supported more diverse nitrogen removing bacteria than the sediments. Nitrogen removing bacteria in the wetland systems appeared to be stochastically assembled from the same source community. The self-organising map model was applied as a prediction tool for the performance of ICW and to investigate an alternative method of analysing water quality performance indicators. The model performed very well in predicting nutrients and biochemical oxygen demand with easy to measure and cost-effective water quality parameters. The results indicate that the model was an appropriate approach to monitor wastewater treatment processes and can be used to support management of ICW in real-time.
9

Implementace moderních metod řízení jakosti ve výrobě elektromotorů. / Implementation of modern quality control methods in production of electromotors.

Řídký, Václav January 2009 (has links)
ANNOTATION Václav Řídký Implementation of modern quality control metods in production of electromotors Diploma thesis, Institute of metrology and quality assurance testing, UT FME, Brno This diploma thesis deals with problems of reducing the complaints quota in production of electromotors to acceptable level. This work includes analysis of faults, presentation of single faults and instituted measures leading to the elimination their inception.
10

Опытно-конструкторская разработка энергоэкономичной системы стружкоуборки для ГАЦ токарной обработки деталей типа ''фланец и втулка'' : магистерская диссертация / Pilot - design development of energy efficient systems for cleaning chip GAC turning parts like '' flange and the sleeve ''

Хвостикова, А. И., Khvostikova, A. I. January 2015 (has links)
Study purpose is experiment development and design of automatic and energy-conserving chip removing instrument for turning FMS, in which flanges and bushes part type are machined. The author investigates power consumption reduction methods of transport machines, analyzes example of workshop layout and chip removing methods, selects and modernize equipment for chip removing system in the course of study. The system is based on three types of conveyers: worm conveyor, oscillating conveyor, chain conveyor. The conveyers included in system was modernized by author designed autocontrol device, which greatly lowers power consumption. The great attention is attended to apron general conveyer, in which double drive is invited to apply (the first drive in head part and the second one in the tail part). The problem of conveyer strainer location was solved the original way. This way consists in combination of conveyer strainer and main drive, for which purpose structural variant was analyzed and the simple one was selected. The one of study main parts is design of combined cylinder-conical reducer, which is base of chain conveyer and chain strainer devise. As a result of the work were filed 4 patent applications of the Russian Federation. All applications were approved. Scientific work includes technical solutions in following patents RF (see. Appendix 2): 1. № 135 279 CNC lathe from 10 December 2013; 2. № 135752 Reducer from 20 December 2013; 3. № 130978 Vibrating dated 10 August 2013; 4. № 136510 Electromechanical drive from 10 January 2014. / Цель работы – опытная разработка и конструирование автоматических и энергоэкономичных средств уборки стружки в ГАЦ токарной обработки на примере деталей типа «фланец и втулка». В ходе научной работы был проведен анализ деталей-представителей и рассчитан объем стружки при их обработке; проведено ознакомление со способами снижения энергопотребления транспортирующих машин; проведен анализ примера планировки цеха и возможных способов стружкоудаления; проведены выбор и модернизация оборудования для системы стружкоуборки. В основу системы положено применение трех видов конвейеров: шнековый, вибрационный и цепной. При включении конвейеров в систему они были модернизированы и снабжены, разработанными автором проекта устройствами автоматического управления, позволяющими существенно снизить их энергопотребление. Особое внимание уделено общецеховому пластинчатому конвейеру, в котором предложено применить двойной привод (в головной и хвостовой частях конвейера). При этом принципиально по-новому решен вопрос о расположении натяжного устройства конвейера. Предложено его совместить с головным приводом, для чего проанализированы конструктивные варианты такого решения и выбрано наиболее простое. В основу проекта входит разработка и проектирование комбинированного цилиндро-конического редуктора, являющегося ключевой частью не только привода цепного конвейера, но и механизма натяжения цепи. Часть работы участвовала во Всероссийском конкурсе выпускных квалификационных работ 2013 года по специальности «Металлообрабатывающие станки и комплексы», проходившем в «Южно-Уральском государственном университете». Работа заняла первое место в номинации «Подъемно-траспортные машины» (грамота прилагается). По основным разработкам научной работы были зарегистрированы следущие патенты Российской Федерации: 1. № 135279 Токарный станок с ЧПУ от 10 декабря 2013 года; 2. № 135752 Редуктор от 20 декабря 2013 года; 3. № 130978 Вибротранспортер от 10 августа 2013 года; 4. № 136510 Электромеханический привод от 10 января 2014 года. Патенты представлены в приложении 2.

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