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Showing 1 to 20 of 20 for “"UDS"”.
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Control of the UDS process for the production of solder balls for BGA electronics packaging
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Design of a container for the collection of solder balls produced by the Uniform Droplet Spray (UDS) process
… high cost, however, the Uniform Droplet Spray (UDS) process has proven itself to be an efficient method. Still, the electronics industry requires solder balls of higher sphericity. The present work investigates improvements made to the UDS process in order to increase the sphericity of the …
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A 15-year retrospective review of urodynamic studies in Children at Red Cross War Memorial Childrens Hospital (RCWMCH), Cape Town, South Africa
… diagnostic benefits of urodynamic studies (UDS), their adoption into clinical practice in Africa has been slow. This study aimed to review the use of invasive UDS in children at a tertiary paediatric hospital in South Africa. Methods: A retrospective analysis of 1108 UDS was conducted. …
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Development of a uniform-droplet spray apparatus for high melting temperature metals
… of a high-temperature uniform droplet spraying (UDS) apparatus extend the performance and capabilities of powder based manufacturing processes. Although the main concepts of operation of the high-temperature apparatus are typical to the ones currently existing in the Droplet Based Manufacturing …
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Repair in Ehrlich Ascites Tumor Cells
Unscheduled DNA synthesis (UDS), an indicator of excision repair, was induced in freshly drawn Ehrlich ascites tumor cells (EAT), using ionizing radiation, far ultraviolet light (254 nm) or near UV light (365 nm) in combination with 8-methoxypsoralen. UDS was scored by grain counts in …
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Development of a process for the production of fluxless solder spheres for BGA electronics packaging
… packaging technology. The Uniform Droplet Spray (UDS) process produces solder spheres by controlling the breakup of a continuous laminar jet into uniform droplets. which are then rapidly solidified in a liquid bath or an inert gas. This work discusses the production of highly size-accurate solder …
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Autoradiographische Untersuchungen zum Einfluss einer achtwöchigen 50-Hz-Magnetfeld-Exposition auf DNA-Reparatur und mitochondriale DNA-Synthese verschiedener Zellarten im Gehirn adulter Mäuse
… nuclear (n) unscheduled DNA synthesis (UDS) and mitochondrial (mt) DNA synthesis in order to obtain information on MF induced nDNA damage and its repair as well as the cell metabolism. 80 male mice (NMRI strain) were randomly divided into four groups, In group I and II, the MF exposure …
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Feasibility study of rapid prototyping using the uniform droplet spray process
… prototyping using the Uniform Droplet Spray (UDS) process. Straight and stable liquid metal jets are crucial requirements in the application of UDS to rapid prototyping. Methods to maintain the jet straight and stable were developed. Hardware improvements include an auxiliary orifice mounting …
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Autoradiographische Modelluntersuchungen an der Maus zum Einfluss einer achtwöchigen 50-Hz-Magnetfeld-Exposition auf DNA-Reparatur und mitochondriale DNA-Synthese von Tubulusepithelzellen der Niere
… synthesis rate ("unscheduled DNA synthesis" = UDS) and the mitochondrial DNA synthesis rate of proximal and distal tubular epithelium cells in the kidney of the 9-month-old mouse after an eight-week exposure to a magnetic field (MF) of varying intensity.2.) Out of a total of 80 test animals, 29 …
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Autoradiographische Untersuchungen zu nukleären DNA-Strangbrüchen in unterschiedlichen Zellarten im Gehirn der Maus nach einer achtwöchigen 50-Hz-Magnetfeldexposition
… of body mass, in order to carry out additional UDS tests on these animals. Two hours after ³H- TdR injection the animals were sacrificed, their organs removed and preserved with a fixative for several weeks. Paramedian sagittal paraffin sections were prepared with a thickness of 3 µm. To …
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Nest Predation by brown-headed cowbirds (Molothrus ater)
… potential hosts. Utilization distributions (UDs) are among the most applicable methods of quantifying space use. In one of the first practical applications of a multidimentional UD that includes time as a dimension, I show that cowbirds were significantly more likely to be found around …
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Building adaptive smart transport governance using citizen-centric data
… theory in cities (CTC) and urban data science (UDS). A citizen-centric adaptive governance framework is proposed. Using the proposed framework to understand specific issues in smart transport governance, Chapters 3-5 conduct empirical studies. Chapter 3 first assesses the existing smart …
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The effects of deposit thermal history on microstructure produced by uniform droplet spray forming
… history on the microstructure produced by the UDS forming process. Experiments were conducted with Zn-20wt% Sn alloy droplets using different process parameters to vary the deposit solidification rate from 6⁰C/s to 27⁰C/s immediately after deposition. The temperature of the sprayed deposits was …
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Cosmology with Velocity Dispersion based Counts of Groups and the Effect of AGN Feedback on Host Galaxy Morphology
… multi-wavelength sample from two surveys, UKIDSS/UDS, and ULTRAVISTA/COSMOS. The radius distribution of the two groups are similar, thus providing evidence for the duty cycle hypothesis. I also check the star formation activity of the LERGs. For the duty cycle to hold, LERGs should reside within …
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The Tortoise and the Landscape: Examining the Habitat, Daily Movement, Home Range Size, and Thermal Ecology of the Texas Tortoise (Gopherus berlandieri)
… Texas. We estimated utilization distributions (UDs) using autocorrelated kernel density estimates. Using a combination of path analysis and separate linear regression models we tested whether several weather variables affected the distance and directionality of daily tortoise movement and …
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Einfluss einer achtwöchigen 50-Hz-Magnetfeld-Exposition auf DNA-Reparatur und mitochondriale DNA-Synthese von Sammelrohr-Epithelzellen der Niere
… rate (so-called unscheduled DNA-synthesis, UDS) for measuring MF-induced nDNA damage as well as b) the mtDNA synthetic rate as an indicator of metabolic cell activity was examined cell-type specifically in situ. After considering the background labelling, normalization to nuclear DNA content …
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Investigating the Use of M-Health for Learning and Clinical Training by Medical Students in Ghana
… Studies School of Medicine and Health Sciences (UDS-SMHS) and University of Ghana School of Medicine and Dentistry (UG-SMD). Online and paper questionnaires were distributed to 828 students and 291 questionnaires were returned. Questionnaires from dental students at UG-SMD (n = 5) were excluded …
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Behavioural ecology of Irrawaddy, Orcaella brevirostris (Owen in Gray, 1866), and Indo-Pacific humpback dolphins, Sousa chinensis (Osbeck, 1765), in northeast Queensland, Australia : a comparative study
… Additionally, the Utilization Distibutions (UDs) of both species showed strong correlation (rs = 0.55, P < 0.05), indicating strong concordance in the utilization patterns of shared areas by both species. Despite considerable overlap and concordance in space use patterns, Irrawaddy and …
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Situace surrealistického subjektu
Univerzita Karlova v Praze Filosofická fakulta katedra estetiky Diploma thesis Šimon Svěrák Situation of the Surrealist Subject (abstract) 2012 thesis supervisor: prof. PhDr. Vlastimil Zuska, CSc. Abstract This thesis focuses on the situation of a substantial subject in the historical development …