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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.
691

Termální lázně Yverdon, pět smyslů v architektuře / Thermal baths Yverdon, five senses in architecture

Kupcová, Tereza January 2015 (has links)
Spa is located on the outskirts of the Swiss city of Yverdon. Area is surrounded by disparate buildings especially residential character. There are historical buildings on the land and buildings of the spa and hotel. The current spa and the outbuilding of hotel don´t meet requirements, that´s why the buildings will be replaced by a new complex. Neighbourhood doesn´t have any relationship with the spa, that´s why the whole land is surrounded by a wall. Water surface with three “floating” pavilions is inserted into this closed spa park. There are the public spa, the therapeutic spa and the part of the hotel on the water surface. Each of them works largely independently; they are connected by the water surface. The complex is separated by a part of shallow water from the park. It´s solitaire in the park, but it has close connection with it. The spa complex is located near the forest on the south part of the land, because the whole system is quite open.
692

Microstructural and Micro-Mechanical Characterization of As-built and Heat-treated samples of HASTELLOY X produced by Laser Powder Bed Fusion Process

Sanni, Onimisi January 2022 (has links)
Microstructure and micro-mechanical characterization of as-built and heat-treated samples of Hastelloy X produced by laser powder bed fusion (LPBF) process has been carried out in this study. As-built LPBF blocks were solution heat-treated at 1177°C and 1220°C followed by fast cooling. The microstructure of as-built and heat-treated samples were studied by light optical microscopy, scanning electron microscopy, and electron backscatter diffraction. Instrumented indentation micro Vickers testing was performed to obtain microhardness and elastic modulus of asbuilt and heat-treated samples. Microtensile samples from as-built and heat-treated blocks were prepared and polished for mechanical characterization. Microtensile testing inside the scanning electron microscope was performed to evaluate the mechanical properties and to get information about the microstructural changes during plastic deformation. Microstructure characterization revealed disrupted epitaxial grain growth for the as-built samples whereas the two heated-treated Hastelloy X samples exhibited equiaxed grains with varying twin fractions. As-built Hastelloy X samples exhibited higher mean hardness than heat-treated samples. The yield strength of as-built samples reveals higher values as compared to conventional wrought Hastelloy X samples, whereas lower yield strength and higher elongation were observed for heat-treated samples as compared to as-built samples. Higher elongation and lower yield strength values were observed for the samples solution heat-treated at 1220°C compared to the solution heat-treated at 1177°C. Microstructural evaluation at different plastic strains during in-situ microtensile testing reveals a clear difference in dislocation density for as-built and heat-treated samples.
693

Att säkerställa ett begränsat material för mindre aktörer : En fallstudie på KG List / To secure limited material for smaller enterprises : A case study on KG List

Olsen, Oskar, Strandberg, Axel January 2024 (has links)
Course: Degree project in Supply Chain Management, Master of science within business and economics, 30 credits Title: To secure limited material for smaller enterprises - A case study on KG ListAuthors: Oskar Olsen & Axel StrandbergSupervisor: Åsa GustavssonExaminator: Peter Berling Background: In an increasingly competitive business market, the sourcing process needs to be optimized to gain advantages over competitors. Companies using limited resources suffer from not being able to secure material in different ways. Being a small enterprise also gives additional negative consequential effects. To be able to decrease the effects, working methods with solutions and key performance indicators need to be found. Smaller enterprises in the wood industry have been identified as actors suffering from the consequential effects. Purpose: The purpose of the paper is to identify negative consequential effects experienced by smaller enterprises regarding the securing of limited resources. In addition, the aim is to describe a working method with solutions and associated key performance indicators to counteract the consequential effects regarding the securing of limited resources. Research questions: RQ1: What consequences do smaller enterprises experience when securing limited material?RQ2: What solutions and key performance indicators can be applied to counteract identified consequential effects when securing limited material for smaller enterprises?Method: The paper uses a deductive approach while applying a qualitative research method with elements of quantitative data. The primary empirical data was collected by unstructured and semistructured interviews, observations and the in-depth method focus-group interviews. Results: The study shows multiple consequential effects of not being able to secure limited resources as a smaller enterprise. The three major findings were: uncertainty in supply, decreased purchasing power due to being a smaller enterprise in the industry, and being forced to import materials. The study finds working methods with solutions and associated key performance indicators to counteract each effect. With supply chain resilience the effects of uncertainty in supply decreases. The purchasing power could increase by developing supplier relationships or increase the purchase price. By outsourcing a part of or the whole production process the effects of being forced to import could be counteracted. The key performance indicators for each solution needs to be developed individually for every company and should focus on critical moments related to the consequential effects.   Keywords: Limited resources, smaller enterprises, securing resources, consequential effects, solutions, key performance indicators, KPI, sourcingprocess, purchasing power, resilience, supply chain, supplier relationships, outsourcing, supplier pool, the wood industry, oak, oak log
694

Opvoedkundig-sielkundige riglyne vir die hantering van die effek van gesinsgeweld op kinders

Poole, Angeline. January 2002 (has links)
Thesis (M.Ed. (Voorligting))--Universiteit van Suid-Afrika, 2002.
695

Network flux analysis of central metabolism in plants

Masakapalli, Shyam Kumar January 2011 (has links)
The aim of this thesis was to develop stable-isotope steady-state metabolic flux analysis (MFA) based on <sup>13</sup>C labeling to quantify intracellular fluxes of central carbon metabolism in plants. The experiments focus on the analysis of a heterotrophic cell suspension culture of Arabidopsis thaliana (L) Heynh. (ecotype Landsberg erecta). The first objective was to develop a robust methodology based on combining high quality steady-state stable labeling data, metabolic modeling and computational analysis. A comprehensive analysis of the factors that influence the outcome of MFA was undertaken and best practice established. This allowed a critical analysis of the subcellular compartmentation of carbohydrate oxidation in the cell culture. The second objective was to apply the methodology to nutritional perturbations of the cell suspension. A comparison of growth on different nitrogen sources revealed that transfer to an ammonium-free medium: (i) increased flux through the oxidative pentose phosphate pathway (oxPPP) by 10% relative to glucose utilisation; (ii) caused a substantial decrease in entry of carbon into the tricarboxylic acid cycle (TCA); and (iii) increased the carbon conversion efficiency from 55% to 69%. Although growth on nitrate alone might be expected to increase the demand for reductant, the cells responded by decreasing the assimilation of inorganic N. Cells were also grown in media containing different levels of inorganic phosphate (Pi). Comparison of the flux maps showed that decreasing Pi availability: (i) decreased flux through the oxPPP; (ii) increased the proportion of substrate fully oxidised by the TCA cycle; and (iii) decreased carbon conversion efficiency. These changes are consistent with redirection of metabolism away from biosynthesis towards cell maintenance as Pi is depleted. Although published genome-wide transcriptomic and metabolomic studies suggest that Pi starvation leads to the restructuring of carbon and nitrogen metabolism, the current analysis suggests that the impact on metabolic organisation is much less extreme.
696

Development and assessment of CFD models including a supplemental program code for analyzing buoyancy-driven flows through BWR fuel assemblies in SFP complete LOCA scenarios

Artnak, Edward Joseph 31 January 2013 (has links)
This work seeks to illustrate the potential benefits afforded by implementing aspects of fluid dynamics, especially the latest computational fluid dynamics (CFD) modeling approach, through numerical experimentation and the traditional discipline of physical experimentation to improve the calibration of the severe reactor accident analysis code, MELCOR, in one of several spent fuel pool (SFP) complete loss-of-coolant accident (LOCA) scenarios. While the scope of experimental work performed by Sandia National Laboratories (SNL) extends well beyond that which is reasonably addressed by our allotted resources and computational time in accordance with initial project allocations to complete the report, these simulated case trials produced a significant array of supplementary high-fidelity solutions and hydraulic flow-field data in support of SNL research objectives. Results contained herein show FLUENT CFD model representations of a 9x9 BWR fuel assembly in conditions corresponding to a complete loss-of-coolant accident scenario. In addition to the CFD model developments, a MATLAB based control-volume model was constructed to independently assess the 9x9 BWR fuel assembly under similar accident scenarios. The data produced from this work show that FLUENT CFD models are capable of resolving complex flow fields within a BWR fuel assembly in the realm of buoyancy-induced mass flow rates and that characteristic hydraulic parameters from such CFD simulations (or physical experiments) are reasonably employed in corresponding constitutive correlations for developing simplified numerical models of comparable solution accuracy. / text
697

Soil Carbon Dioxide dynamics and Nitrogen cycling in an Eastern Amazonian Rainforest, Caxiuana, Brazil / Boden Kohlendioxyd-Dynamik und Stickstoffkreislauf in einem Regenwald in Ostamazonien Caxiuana, Brasilien

Doff Sotta, Eleneide 11 July 2006 (has links)
No description available.
698

Klonieren und Charakterisieren von P/Q-Typ-Calciumkanälen für Mikroskopie an lebenden Zellen / Cloning and characterization of P/Q-type calcium channels for live cell imaging

Juha, Martin 03 September 2013 (has links)
No description available.
699

Microstructure, texture and mechanical property evolution during additive manufacturing of Ti6Al4V alloy for aerospace applications

Antonysamy, Alphons Anandaraj January 2012 (has links)
Additive Manufacturing (AM) is an innovative manufacturing process which offers near-net shape fabrication of complex components, directly from CAD models, without dies or substantial machining, resulting in a reduction in lead-time, waste, and cost. For example, the buy-to-fly ratio for a titanium component machined from forged billet is typically 10-20:1 compared to 5-7:1 when manufactured by AM. However, the production rates for most AM processes are relatively slow and AM is consequently largely of interest to the aerospace, automotive and biomedical industries. In addition, the solidification conditions in AM with the Ti alloy commonly lead to undesirable coarse columnar primary β grain structures in components. The present research is focused on developing a fundamental understanding of the influence of the processing conditions on microstructure and texture evolution and their resulting effect on the mechanical properties during additive manufacturing with a Ti6Al4V alloy, using three different techniques, namely; 1) Selective laser melting (SLM) process, 2) Electron beam selective melting (EBSM) process and, 3) Wire arc additive manufacturing (WAAM) process. The most important finding in this work was that all the AM processes produced columnar β-grain structures which grow by epitaxial re-growth up through each melted layer. By thermal modelling using TS4D (Thermal Simulation in 4 Dimensions), it has been shown that the melt pool size increased and the cooling rate decreased from SLM to EBSM and to the WAAM process. The prior β grain size also increased with melt pool size from a finer size in the SLM to a moderate size in EBSM and to huge grains in WAAM that can be seen by eye. However, despite the large difference in power density between the processes, they all had similar G/R (thermal gradient/growth rate) ratios, which were predicted to lie in the columnar growth region in the solidification diagram. The EBSM process showed a pronounced local heterogeneity in the microstructure in local transition areas, when there was a change in geometry; for e.g. change in wall thickness, thin to thick capping section, cross-over’s, V-transitions, etc. By reconstruction of the high temperature β microstructure, it has been shown that all the AM platforms showed primary columnar β grains with a <001>β.
700

Centrum pro sport a volný čas Brno / Sports and Leisure Centre Brno

Chovanečková, Nikol January 2017 (has links)
The theme of the dissertation titled the Centre of Sport and Leisure Time in Brno is a design of a relaxing and sport site „Centrum Lužánky“. The subject of this project is architectonic-city-planning study, which deals with elaborating a concept of a sport centre behind Lužánky in Brno-Ponava. This dissertation contains details of the facility and the area of the current swimming pool Lužánky. The current state of the facility built in 1979 doesn’t meet requirements of visitors and sportsmen anymore. The main aim of this project is the reconstruction of the current fifty-meter swimming pool, a design of a new swimming pool placed under the ground floor of the current building, which will provide space for organizing international competitions, trainings of professional sportsmen, etc. At the same time the busyness of the current swimming pools would be lowered by building a new indoor and outdoor waterpark, especially for the group of recreational visitors. The attractiveness of the facility will be increased by the newly designed park relaxing area and proposed multipurpose area, used as a sports field in the summer and as an ice ring in the winter. Additional value of the facility is comprised by an indoor and outdoor café and large relaxing area on the roof of the waterpark. The whole area increases the community facility availability by a proposed wide range of services for health, relax and sport. The advantage of the whole concept is the mutual connection of all facilities. The entrance to the area is shortened by a designed pedestrian bridge, accessible from the south and north busy areas. The whole project is enhanced by increased number of new parking places, located particularly along the access road, the street Sportovní, going through a green zone. The road and parking places are proposed in the design of residential streets, respecting walking pedestrians. The area has a very rich sport history, which is dated back to 1922. The new concept increases th

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