Дисертації з теми "High temperature shock"
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Kapper, Michael Gino. "A High-Order Transport Scheme for Collisional-Radiative and Nonequilibrium Plasma." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245427632.
Повний текст джерелаMcDonald, Heather Brown. "The effect of sulfide inhibition and organic shock loading on anaerobic biofilm reactors treating a low-temperature, high-sulfate wastewater." Diss., University of Iowa, 2007. http://ir.uiowa.edu/etd/129.
Повний текст джерела北村, 圭一, Keiichi KITAMURA, 啓伺 小澤, Hiroshi OZAWA, 勝祥 花井, Katsuhisa HANAI, 浩一 森, Koichi MORI, 佳朗 中村 та Yoshiaki NAKAMURA. "極超音速TSTOにおける衝撃波干渉・境界層剥離を伴う流れ場の解析". 日本航空宇宙学会, 2008. http://hdl.handle.net/2237/13872.
Повний текст джерелаKanjer, Armand. "De l'efficacité des procédés SMAT et de choc laser dans l'amélioration de la tenue à l'oxydation haute température d'alliages de titane." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCK003/document.
Повний текст джерелаThe aim of this thesis is to determine the influence of two mechanical surface treatments, the shot- peening performed with several type of balls (WC, alumina and glass) and the laser shock peening, on the high temperature oxidation resistance of two titanium alloys : alpha alloy with commercially purity (Grade 1) and aeronautical beta metastable alloy (TIMETAL-21S).After different treatments, the pieces are oxidized with different conditions: of time (between 5 hours to study the firsts times of oxidation and 3000 hours to compare with a classical aeronautical test), of temperature (600°C to 700°C) and atmosphere (dry air or oxygen).The pieces are analyzed before and after oxidation exposure with several mechanical (micro-hardness, strain measurements), chemicals (XRD, nuclear microprobe) and structural (EBSD, texture) techniques. The results show a large surface perturbation before the high temperature exposure in term of morphological, mechanical, structural and chemical point of view.This mechanical treatments lead up to an oxidation rate reduction for all the different titanium alloys. This treatments modified the diffusion rate of several elements (nitrogen, oxygen, molybdenum or aluminum) but also the microstructure (recrystallization, grain morphology or texturing) during high temperature exposure. Nitrogen element plays an important role in the observed phenomena.However, the determination of consequences after mechanical treatment on the titanium oxidation resistance is again difficult with the observations noted in this work. Actually, there is a simultaneous contributions of several factors: chemical, mechanical and structural
Fahr, Payam. "Response of filled corrugated sandwich structures to shock loading at high temperatures." Thesis, University of Rhode Island, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1555644.
Повний текст джерелаThe dynamic response of filled corrugated steel sandwich panels was investigated under combined extremes of blast loading and high temperature heating. The objective of this project was to study blast mitigation and the thermo-mechanical response of panels using a polymer based syntactic foam and mortar as a filler material. These materials were selected due to their thermal resistivity. In this study, silicone resin (with an operating temperature range between -53°C to 232°C) and two types of glass bubbles were selected as materials to develop a heat resistive syntactic foam. The mechanical properties of the foam were investigated, in ambient temperatures, before and after high-temperature heat treatment (of 500°C), by quasi-static compression experiments. It was observed that plateau stress increases after introduction of glass bubbles in silicone, enhancing the energy absorption properties for both specimens with and without heat treatment. To produce repeatable blast loading, a shock tube was utilized. Pressure history was recorded using pressure transducers located in the shock tube muzzle. High speed photo-optical methods utilizing Digital Image Correlation (DIC) coupled with optical band-pass filters and high-intensity light source, were utilized to obtain the real-time deformation at high temperature while a third camera captured side-view deformation images. The shock pressure profiles and DIC analysis were used to obtain the impulse imparted to the specimen, transient deflection, in plane strain and out-of-plane velocity of the back face sheet. Shock tube experiments were performed to investigate the blast response of corrugated steel sandwich panels filled with a silicone based syntactic foam filler at room and high temperature. It was observed that using the syntactic foam as a filler material, decreased the front face and back face deflections by 42% and 27%, respectively, compared to an empty panel. The highest impulse was imparted on the specimen at room temperature and subsequently lower impulses with increasing temperature. Due to increasing ductility in steel with high temperature, the specimens demonstrated an increase in back face deflection, in-plane strain and out-of-plane velocity with increasing temperatures with weld failure being the primary form of core damage. High temperature blast experiments were also performed on mortar filled corrugated steel sandwich panels. Mortar is a common building material that can withstand extreme temperatures. It was observed cement based mortars are thermally resilient enough to be used as a filler material for high temperature applications. The highest impulse was imparted on the specimen at room temperature and subsequently lower impulses with increasing temperature. A temperature difference of at least 300ºC was observed across the thickness of the specimen for all heating conditions. Due to increasing ductility in steel with high temperature, the specimens demonstrated an increase in back face deflection, in-plane strain and out-of-plane velocity with increasing temperatures with weld failure being the primary form of core damage.
Hall, Joel. "AN Optimized Kinetics Model for OH Chemiluminescence at High Temperatures and Atmospheric Pressures." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2086.
Повний текст джерелаM.S.M.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Mechanical Engineering
Kalitan, Danielle Marie. "A Study of Syngas Oxidation at High Pressures and Low Temperatures." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2422.
Повний текст джерелаPh.D.
Department of Mechanical, Materials and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering PhD
Bräuer, Jörg. "Erarbeitung eines Raumtemperatur-Waferbondverfahrens basierend auf integrierten und reaktiven nanoskaligen Multilagensystemen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-132820.
Повний текст джерелаJayaram, V. "Experimental Investigations Of Surface Interactions Of Shock Heated Gases On High Temperature Materials Using High Enthalpy Shock Tubes." Thesis, 2007. http://hdl.handle.net/2005/495.
Повний текст джерела"Shock Metamorphism in Ordinary Chondrites: Constraining Pressure and Temperature History." Doctoral diss., 2016. http://hdl.handle.net/2286/R.I.40325.
Повний текст джерелаDissertation/Thesis
Doctoral Dissertation Geological Sciences 2016
Sutton, Darren James. "Laser induced fluorescence studies of melecular species in a high temperature, hypervelocity flow." Phd thesis, 1995. http://hdl.handle.net/1885/138855.
Повний текст джерелаTaloni, Paul Anthony. "Electron and species populations behind high enthalpy shock waves in low density air." Phd thesis, 1990. http://hdl.handle.net/1885/138329.
Повний текст джерелаYu, Chih-Chien, and 余志堅. "Study on Thermal Shock and High Temperature Strength Property of Heat Resistant Cast Iron." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/04070021880059143853.
Повний текст джерела逢甲大學
機械工程學系
88
Heat Resistant Cast Irons have been used in high temperature environment, so it must have excellent high temperature properties, such as high temperature tensile strength, high temperature fatigue strength and thermal shock resistance . The objective of this study is to investigate the high temperature strength property and thermal shock resistance of the heat resistant cast irons. The effects of matrix structure (ferrite, pearlite and austenite) , graphite morphology (flake, compacted / vermicular , spheroidal) and alloying element (Cr,Ni) on the high temperature tensile strength, the high temperature fatigue strength, and thermal shock resistant at different temperatures(1073 K, 873 K and 673 K) of cast irons have been evaluated in this study. We expect to find the quality index apply to themal shock resistance. According to the results of study know that , as a whole , the order of high temperature tensile strength for alloying element is that 0.5%Cr>20%Ni-2%Cr>none alloy addition at R.T., 673K, and 873K ; but the order is that 20%Ni-2%Cr>0.5%Cr>none alloy addition at 1073K. The order of high temperature tensile strength for the matrix strcutures is that pearlite>austenite>ferrite; but the order is that austenite>pearlite>ferrite at 1073K. The order of high temperature tensile strength for various graphite morphology is that spheroidal>c / v>flake at vaious test temperature. The order of high temperature fatigue strength for Heat Resistant Cast Irons of austenite matrix strcutures is that spheroidal>c / v>flake at 673K. For thermal shock resistance of cast irons , the order of thermal shock resistance for graphite morphology of cast iron is that spheroidal>c / v>flake.The order of thermal shock resistance for matrix is austenite>pearlite>ferrite . The order of thermal shock resistance for alloying element is that 20%Ni-2%Cr>0.5%Cr>none alloy addition. Quality Index of High Temperature Strength Property (QHTSP) is obtained for evaluating the high temperature property of the heat resistant cast iron by analysis and evaluation. It is showed has high accurcy and can be used as an important index and reference.
Lin, wan-chi, and 林婉琦. "Gene regulation and mRNA stability of rice 16.9 kDa heat shock protein genes at high temperature." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/18390405811180253703.
Повний текст джерела國立臺灣大學
植物學系研究所
86
Promoter region of Oshsp16.9A from -721 to -1 (F31) contained several alone and overlapping HSE-like sequences. DNA fragments contained the TATA box proximal HSEs (F33 and F35) in Oshsp16.9A promoter were specifically bound with nuclear proteins extracted from heat-shocked rice seedlings. The specific binding was competed with HSE-containing DNA fragments, including HSE sequences from Drosophila. The distal HSEs-containing fragment, F7, revealed the minor binding specificity. Modification of control nuclear proteins by adding 1mM calcium chloride, heating, phosphorylation and phosphorylation with heating did not change the binding property of control nuclear proteins. In contrast, dephosphorylation of heat-shocked nuclear proteins removed the HSE binding activity. Southwestern assay indicated that molecular weight of the nuclear protein involved the HSE binding activity was 70-80 kDa. Oshsp16.9A promoter (F31) contained proximal and distal HSEs was heat-induced in tobacco protoplasts detected by reporter gene - CAT(Chloramphenicol acetyl transferase). Six class I low molecular weight heat shock protein genes were characterized in rice. They are Oshsp16.9A, Oshsp16.9B, Oshsp16.9C, Oshsp17.0, Oshsp18.0 and Oshsp17.7. They showed 80-90% similarity in their coding region. Especially, Oshsp16.9A and Oshsp16.9B shared 99.3% similarity in coding region. However, six 3''UTRs revealed 45-61% similarity and showed the gene specificity. The onset of transcription of rice class I lmw hsp genes at 41℃ was fast and reached the maximal level in 1h. Continuous 41℃ treatment did not keep the high transcription rate. The hs mRNAs accumulated at 41℃ for 2h were stable at 41℃ and 45℃, but not at 28℃. Half-life of individual class I lmw hsp gene was determined by calculating the declination rate of mRNA at 28℃.
Huang, Hung-Tsai, and 黃弘才. "Study on High Temperature Tensile Strength and Thermal Shock Property of Aluminum-Based Heat Resistant Cast Iron." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/yn6894.
Повний текст джерела逢甲大學
機械工程學所
90
The objective of this study is to investigate the effects of various graphite morphologies ( flake , compacted/vermicular , spheroidal ) and aluminum contents on the high temperature tensile strength and thermal shock property at different test temperatures of aluminum-based heat resistant cast irons. According to the results of this study , the high temperature tensile strength of aluminum-based heat resistant cast irons with 2.5%Al is greater than with 8%Al at RT、673K、873K、1073K. The order of high temperature tensile strength for different graphite morphologies is spheroidal graphite cast iron>c / v graphite cast iron>flake graphite cast iron at any test temperature. As a whole , the thermal shock resistant property of aluminum-based heat resistant cast irons with 2.5%Al is better than with 8%Al. The order of thermal shock resistant property for different graphite morphologies is spheroidal graphite cast iron>c / v graphite cast iron>flake graphite cast iron. The order of thermal shock resistant property for the matrix structures is pearlite>ferrite. Moreover, the order of crack number after rupture for different graphite morphologies is flake graphite cast iron>c / v graphite cast iron>spheroidal graphite cast iron. Quality Index of High Temperature Strength Property(QHTSP) is used for evaluating the heat resistance of aluminum-based heat resistant cast iron in this study. Experimental results showed that QHTSP has high accuracy and can be used as important index and reference.
Cheng, Cong Rong. "Effect of high temperature shock during grain maturation on dormancy of wheat (Triticum aestivum L.) and analysis of TaDOG1." Thesis, 2015. http://hdl.handle.net/2440/98165.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Agriculture, Food and Wine, 2015.
Joshi, Namrata. "Targeted over-expression of hsp22 and the maintenance of locomotor activity of third instar larvae of Drosophila melanogaster at high temperatures." Thesis, 2007. http://hdl.handle.net/1974/782.
Повний текст джерелаThesis (Master, Biology) -- Queen's University, 2007-10-01 14:24:15.801
TSAI, WAN-JUAN, and 蔡宛潤. "Improvement of fermentation ability in high temperature by homologous recombination of heat shock protein 104 promoter of saccharomyces cerevisiae Kyokai 7." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/gbgwqa.
Повний текст джерела國立中正大學
化學工程研究所
105
In industry, simultaneous saccharification and fermentation (SSF) is considered to be an important process for the production of alcohol. Because it can efficiently reduce the cost of the production of cellulosic bioethanol. Unfortunately, the temperature for cellulose saccharification is higher than that for yeast fermentation. Therefore, it is desirable to develop a thermotolerance yeast strain to be adopted in the SSF process. When exposed to a variety of environmental stresses such as high temperature, alcoholic or oxidative stress, yeasts rapidly produces trehalose and heat shock proteins (HSPs). In the case of high temperature stress, the hydrogen bonding and Van der Waals force inside proteins can be destroyed then leading their denaturation. The increased misfolding proteins then induced expression of HSPs to help protein refolding and the survival of the cells. Among HSPs, HSP104 is essential for cell survival under high temperature. However, the induction of HSP104 is only transient by which the cells would not be able to survive after a long period of high-temperature fermentation. To prolong the expression of HSP104 at high temperature, plasmid pTEF1-2μ ori HSP26P ISA1 40homo was constructed and the NDA fragment 40homo-FRT-HSP26p-40homo amplified using polymerase chain reaction transformed to Saccharomyces cerevisiae for substituting the HSP104 promoter for the HSP26 promoter using homologous recombination.
Risius, Steffen. "Development of a time-resolved quantitative surface-temperature measurement technique and its application in short-duration wind tunnel testing." Thesis, 2018. http://hdl.handle.net/11858/00-1735-0000-002E-E44D-A.
Повний текст джерелаBräuer, Jörg. "Erarbeitung eines Raumtemperatur-Waferbondverfahrens basierend auf integrierten und reaktiven nanoskaligen Multilagensystemen." Doctoral thesis, 2013. https://monarch.qucosa.de/id/qucosa%3A19994.
Повний текст джерела