Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 80 for “"EGR"”.
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Scope, Selectivity, and Mechanism of the Prins Cyclization of Delta,&egr;- and &egr;,zeta-Unsaturated Ketones With Lewis Acids to 1,3-Halohydrins
Finally, reduction in R:FR increased vertical growth and erectness of both BAS1 gene transformants and control plants, however, overexpression of BAS1 gene induced dwarfism in transgenic creeping bentgrass by delaying vertical shoot growth and altering shoot architecture. True BAS1 transformants …
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Design and demonstration of a spark ignition engine operating in a stratified-EGR mode
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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The C. elegans heterochronic pathway controls the timing of NAB/EGR-mediated terminal differentiation and the onset of adulthood
… and that LIN-29 shares homology with mammalian EGR proteins. These observations highlight the similarity between the mechanisms controlling the onset of adulthood in C. elegans and mammals as LIN-29 is required for the larval-to-adult transition in C elegans and EGRI is required for the onset of …
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An improved method of investigation of combustion parameters in a natural gas fuelled SI engine with EGR and H2 as additives
… with the use of natural gas is NOx emission. EGR can be used to reduce NOx, but it leads to unstable combustion. The stability problem can be resolved by the addition of hydrogen, which can be provided by fuel reforming. Based on the beneficial effects of exhaust gas fuel reforming, the …
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IL-1β Amplification of Nitric Oxide Production and Its Inhibitory Effects on Glucose Induced Early Growth Response-1 Expression in INS-1 Cells
… fully understood. Early growth response gene-1 (Egr-1) expression is specifically and transiently up regulated in pancreatic beta cells in response to glucose. We hypothesized that interleukin-1 beta (IL-1▀) induction of nitric oxide alters glucose induced Egr-1 transcription levels. Egr-1 levels …
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Supply Chain Design With Cross Sales, Product Design, and Price -Setting Competitive Newsvendors
… it through either a decentralized or an integrated retailer, which is modeled as a price-setting newsvendor. A multiplicative demand function incorporating a random factor &egr; is assumed. Results indicate the following: if &egr; is uniformly distributed on [0, x], then the equilibrium …
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Complexity of transcription factor target search: effect of DNA natural decoys and DNA methylation through interplay with methyl-CpG-binding proteins on transcription factor DNA association
… kinetics of the inducible transcription factor Egr-1 using stopped flow assays on a fluorescence spectrometer. We show that the impact of quasi-specific sites depends strongly on their affinity to Egr-1 and on their concentration, and that the presence of these sites are highly probable within …
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Knock mitigation on boosted Controlled Auto-Ignition engines with fuel stratification and Exhaust Gas Recycling
… fuel stratification and Exhaust Gas Recycling (EGR) for knock mitigation on boosted Controlled Auto-Ignition (CAl) engines. Experiments were first conducted on Rapid Compression Machine (RCM) to profile the ignition characteristic of the specific fuel used, and to explain the dilution effects of …
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Optimizing conventional combustion and implementing low-temperature combustion of biodiesel in a common-rail high-speed direct-injection engine
… on a combination of exhaust gas recirculation (EGR) ratio and start of injection (SOI) timing, as these parameters are easily modified and have significant effects on engine emissions. Tests were run at low to moderate engine load at different engine speeds. It was found that with the ECM’s …
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Role of connate water salinity in gas dispersion during enhanced gas recovery by carbon dioxide injection and sequestration
… the gas dispersion during Enhanced GasRecovery (EGR). This highlights EGR’s field scale adoption as a potential method forsimultaneously reducing CO2 emissions through sequestration and enhancing natural gasrecovery and, thus, showcases it economic viability. An important aspect of the reservoir …
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Transcriptional regulation of the Human Zfm1/Sf1 Gene
… (dODN) gegen die Transkriptionsfaktoren EGR-1 und SP-1 zeigten, dass beide Proteine be ider Expression von Zfm1 eine Rolle spielen; während SP-1 eine hohe basale Expression vermittelt, spielt EGR-1 eine ungewöhnliche Rolle. Im Falle des Zfm1-Gens führt Bindung der Faktors an den Promoter …
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Direct and Indirect Effects of Elevated Carbon Dioxide and Ozone on the Canopy of a Soybean Agroecosystem
… [CO2] and [O3]. Radiation use efficiency (&egr;) is a measure of the conversion efficiency of absorbed radiation (APAR) into biomass. I expected elevated [CO2] to increase &egr; however, elevated [O3] may have the opposite effect. Folivorous insects indirectly reduce canopy size through the …
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Characterization and Control of Multi-Cylinder Partially Premixed Combustion
… the combustion temperature through use of EGR. One of these new combustion concepts is Partially Premixed Combustion (PPC). PPC is aimed to provide combustion with low smoke and NOx without sacrificing fuel consumption. This thesis presents the development of a multi-cylinder PPC concept. …
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Charakterisierung des Chemokinrezeptors CXCR3 in humanen proximalen Tubuluszellen der Niere
… der Expression des Early Growth Response Gene-1 (EGR-1) kommt, wurden weitere Experimente mit EGR-1 überexpremierenden IHKE-1-Zellen gemacht. Es konnte gezeigt werden, dass es bei EGR-1 überexpremierenden IHKE 1 Zellen zu einer Herabregulation der Kupfer Zink Superoxiddismutase (Cu/ZnSOD) und der …
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Investigation of combustion and emission characteristics of a diesel engine fueled with butanol-diesel blends
… injection diesel engine equipped with an EGR system. The test was carried out under two engine loads at a constant engine speed, using various combinations of EGR ratios and injection timings. Test results indicate that butanol addition to engine fuel is able to substantially decrease soot …
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Ontogeny of contextual fear conditioning: behavioral, neuropharmacological and molecular mechanisms
… factor early growth response-1 gene (Egr-1) vary based on training phase and brain sub-region in adult and adolescent rats (Asok, Schreiber, Jablonski, Rosen, & Stanton, 2013; Chakraborty, Asok, Stanton, & Rosen, 2016; Schreiber, Asok, Jablonski, Rosen, & Stanton, 2014). Importantly, …
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Effect of engine operating parameters and fuel characteristics on diesel engine emissions
… a variable geometry turbo charger, cooled EGR and a fully configurable engine management computer. Additionally, the effect of varied injection timing and EGR rates were studied to examine how the engine can be optimized for FT fuel. The test fuels included two standard diesel fuels, one …
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Towards understanding molecular, sub-molecular and atomic mechanisms of facilitated target search on DNA
… scanning by the inducible transcription factor Egr-1, we sought answers to the following fundamental questions: What dictates the efficiency in DNA scanning? Can we modulate it? What are the atomic determinants of target DNA search? This work has provided quantitative insights into the …
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Investigation of Fouling in Wavy-Fin Exhaust Gas Recirculators
… subject of fouling of Exhaust Gas Recirculator (EGR) coolers. The fouling process in EGR coolers is identified to be due to two primary reasons — deposition of fine soot particles and condensation of hydrocarbons known as dry soot and wet soot fouling, respectively. Several numerical simulations …
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