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Relevant bibliographies by topics / Cryogenic processing / Dissertations / Theses

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Dissertations / Theses on the topic 'Cryogenic processing'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Huang, Bo. "Cryogenic Processing of Al 7050-T7451 Alloy for Improved Surface Integrity." UKnowledge, 2016. http://uknowledge.uky.edu/me_etds/78.

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Al 7050-T7451 alloy with good combinations of strength, stress corrosion cracking resistance and toughness, is used broadly in the aerospace/aviation industry for fatigue-critical airframe structural components. However, it is also considered as a highly anisotropic alloy as the crack growth behavior along the short transverse direction is very different from the one in the long transverse direction, due to the inhomogeneous microstructure with the elongated grains distributed in the work material used in the sheet/plate applications. Further processes on these materials are needed to improve

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2

Cammack, Darren S. "The control of metal-nInGaAs and nInAlAs interfaces by cryogenic processing." Thesis, Sheffield Hallam University, 1999. http://shura.shu.ac.uk/19420/.

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The physical and chemical properties of In- and Au- interfaces with In[0.53]Ga[0.47]As/InP(100) and In[0.52]Al[0.48]As(100) formed at room and low temperatures have been studied. Current-voltage measurements have indicated that In contacts to Ino[0.53]Ga[0.47]As(100) formed at 80K exhibit significantly higher Schottky barriers (&phis;b=0.45 eV) than In diodes formed at 294K (&phis;b=0.30 eV), whereas Au diodes formed on In[0.53]Ga[0.47]As(100) at either low temperature or room temperature exhibit Ohmic behaviour. The reactions occurring during interface formation at room and low temperatures h

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3

Jensen, Mark. "Energy Process Enabled by Cryogenic Carbon Capture." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5711.

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Global climate change concerns help shape current environmental regulations, which increasingly seek to reduce or capture CO2 emissions. Methods for capturing CO2 emissions from energy processes have been the focus of numerous studies to provide support for those seeking to reduce the environmental impact of their processes. This research has (1) simulated a baseline case of energy-storing cryogenic carbon capture for implementation on a 550 MWe coal fired power plant, (2) presented a novel cryogenic carbon capture process for removing CO2 from natural gas down to arbitrary levels, (3) present

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4

Mohammed, Anwaruddin. "ACHIEVING ULTRAFINE GRAINS IN Mg AZ31B-O ALLOY BY CRYOGENIC FRICTION STIR PROCESSING AND MACHINING." UKnowledge, 2011. http://uknowledge.uky.edu/ms_etds/1.

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This thesis presents results from the application of cryogenic cooling on multiple-pass friction stir processing and the subsequent orthogonal machining on friction stir processed and as-received Mg AZ31B-O disks, and shows their combined effects on microstructure and microhardness values. A simple friction stir tool, a specially designed fixture and liquid nitrogen are used to perform multiple-pass friction stir processing experiments on Mg AZ31B-O alloy. The friction stir processed and as-received sheets are then made into disks for the orthogonal machining experiments. This study analyzes t

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5

Thornton, R. W. "Investigating the effects of cryogenic processing on the wear performance and microstructure of engineering materials." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6935/.

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Cryogenic processing (or cryogenic treatment or ‘cryotreatment’) includes a range of batch heat treatment processes conducted at temperatures below 193K (-80°C). These processes have been industrially applied since the first half of the Twentieth Century and commercially available for around forty years in the United States and Europe. During this time remarkable improvements (of up to 1257%) in the wear resistance of tool steels have been reported, along with smaller but significant improvements in hardness and other mechanical properties. While martensitic tool steels have been the focus of

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6

Fazlollahi, Farhad. "Dynamic Liquefied Natural Gas (LNG) Processing with Energy Storage Applications." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/5956.

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The cryogenic carbon capture™ (CCC) process provides energy- and cost-efficient carbon capture and can be configured to provide an energy storage system using an open-loop natural gas (NG) refrigeration system, which is called energy storing cryogenic carbon capture (CCC-ES™). This investigation focuses on the transient operation and especially on the dynamic response of this energy storage system and explores its efficiency, effectiveness, design, and operation. This investigation included four tasks.The first task explores the steady-state design of four different natural gas liquefaction pr

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7

Caudill, James R. "ENHANCED SURFACE INTEGRITY WITH THERMALLY STABLE RESIDUAL STRESS FIELDS AND NANOSTRUCTURES IN CRYOGENIC PROCESSING OF TITANIUM ALLOY TI-6AL-4V." UKnowledge, 2019. https://uknowledge.uky.edu/me_etds/134.

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Burnishing is a chipless finishing process used to improve surface integrity by severe plastic deformation (SPD) of surface asperities. As surface integrity in large measure defines the functional performance and fatigue life of aerospace alloys, burnishing is thus a means of increasing the fatigue life of critical components, such as turbine and compressor blades in gas turbine engines. Therefore, the primary objective of this dissertation is to characterize the burnishing-induced surface integrity of Ti-6Al-4V alloy in terms of the implemented processing parameters. As the impact of cooling

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8

Singh, Jagat. "Commissioning of an Arc-Melting/Vacuum Quench Furnace Facility for Fabrication of Ni-Ti-Fe Shape Memory Alloys, and the Characterization." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2104.

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Shape memory alloys when deformed can produce strains as high as 8%. Heating results in a phase transformation and associated recovery of all the accumulated strain, a phenomenon known as shape memory. This strain recovery can occur against large forces, resulting in their use as actuators. The goal of this project is to lower the operating temperature range of shape memory alloys in order for them to be used in cryogenic switches, seals, valves, fluid-line repair and self-healing gaskets for space related technologies. The Ni-Ti-Fe alloy system, previously used in Grumman F-14 aircrafts and a

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9

CASTRO, Alessandra Almeida, and Alessandra Almeida Castro PAGANI. "Propriedades térmicas, qualidade e armazenabilidade de camarão (Litopenaeus vannamei, Boone) congelados em temperaturas criogênicas." Universidade Federal de Campina Grande, 2004. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/2003.

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Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-10-17T19:51:05Z No. of bitstreams: 1 ALESSANDRA ALMEIDA CASTRO - TESE PPGEP 2004..pdf: 50999854 bytes, checksum: 5c3c28a3bdfe146c8c95c174dbbd858e (MD5)<br>Made available in DSpace on 2018-10-17T19:51:05Z (GMT). No. of bitstreams: 1 ALESSANDRA ALMEIDA CASTRO - TESE PPGEP 2004..pdf: 50999854 bytes, checksum: 5c3c28a3bdfe146c8c95c174dbbd858e (MD5) Previous issue date: 2004-08-20<br>Capes<br>O objetivo desta pesquisa foi estudar o efeito das técnicas de: a) congelamento nas temperaturas de -20 °C, -196 °C e -170 °C; b) arma

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10

Harastani, Mohamad. "Image analysis methods development for in vitro and in situ cryo-electron tomography studies of conformational variability of biomolecular complexes : Case of nucleosome structural and dynamics studies." Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS283.

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La tomographie électronique cryogénique (cryo-TE) permet de visualiser des complexes biomoléculaires in situ. Les données 3D de biomolécules produites à l'aide de cryo-ET sont bruitées, souffrent d'anisotropies spatiales et sont difficiles à analyser individuellement. Les biomolécules sont flexibles et l'analyse de leur variabilité conformationnelle est nécessaire pour comprendre leurs mécanismes fonctionnels. Les méthodes standards de traitement de données de cryo-ET moyennent plusieurs copies de biomolécules individuelles pour obtenir des structures à des résolutions plus élevées et considèr

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11

"Machining of nimonic 90 using sustainable techniques and modelling for the specific cutting energy." Thesis, 2018. http://localhost:8080/iit/handle/2074/7718.

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12

Huang, Shang-Tzi, and 黃聖財. "Study of Schottky Contact with Cryogenic Processing and Characterization of Semiconductor Material by Photoreflectance Modulation technique." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/43678271955579564017.

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碩士<br>國立交通大學<br>電子物理學系<br>82<br>In this thesis, we stuty Photoreflectance spectroscopy and the characteristics of Schottky contacts with cryogenic processing. The Schottky contacts with cryogenic processing reserve an amorphous-like structure at the interface. This metal-insulator -semiconductor(MIS)-like structure at the interface enhances the barrier height. From FKO( Franz-Keldysh Oscillation ) of photoreflectance spectroscopy shows that the built-in electric field of Schottky contacts i

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13

Sun, Tung-Jeng, and 孫東正. "The Study of Pulsed UV Laser Assisted Cryogenic Etching and Its Applications to the Processing of Optoelectronic Devices." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/63590143858895814092.

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碩士<br>國立海洋大學<br>光電科學研究所<br>88<br>As a extension of laser-assisted cryoetching\footnote{Through the thesis, we concisely use the term ``PUVLACE'', stands for Pulsed UV Laser Assisted Cryogenic Etching to represent the damage-free, high resolution, and high anisotropic dry etching technique utilized by pulsed UV laser at low temperature.} on GaAs\cite{ShihD1994}, GaN (intrinsic) [C1] and n-GaN[C2], the thesis reports the application of this low surface damage tching technique for the etching of GaN and SiCN film which are potentially important material for blue light device and dvanced opto-elec

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14

Gowda, B. Sadashive. "Analytical And Experimental Study Of Bulk Precooling Of Food Products." Thesis, 1996. https://etd.iisc.ac.in/handle/2005/1711.

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15

Gowda, B. Sadashive. "Analytical And Experimental Study Of Bulk Precooling Of Food Products." Thesis, 1996. http://etd.iisc.ernet.in/handle/2005/1711.

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16

Rakesh, P. "A Study of the Characteristics of Gas-On-Liquid Impinging Injectors." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3126.

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The work presented here pertains to investigations on gas-on-liquid type of impinging injectors with a generic approach with prospective applications in several areas, and at places with particular emphasis on cryogenic or semi-cryogenic liquid propellant rockets. In such rockets, one of the components arrives at the injector in a gaseous phase after passing through the regenerative coolant passages or a preceding combustion stage. Most often, the injectors in such systems are of shear coaxial type. The shear coaxial injectors suffer from several disadvantages like complexity in design, manufa

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17

Rakesh, P. "A Study of the Characteristics of Gas-On-Liquid Impinging Injectors." Thesis, 2014. http://hdl.handle.net/2005/3126.

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The work presented here pertains to investigations on gas-on-liquid type of impinging injectors with a generic approach with prospective applications in several areas, and at places with particular emphasis on cryogenic or semi-cryogenic liquid propellant rockets. In such rockets, one of the components arrives at the injector in a gaseous phase after passing through the regenerative coolant passages or a preceding combustion stage. Most often, the injectors in such systems are of shear coaxial type. The shear coaxial injectors suffer from several disadvantages like complexity in design, manufa

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