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 75 for “"Static conditions"”.
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An Experimental Investigation of Ejector Ramjet Performance at Static Conditions
… the Atlantis Intake System (AIS) was tested at static conditions. For static tests with no forward velocity, the AIS ERJ successfully entrained and mixed the stagnant surrounding air to create a stoichiometric mixture of 17.2 when the Mach 2 primary jet’s total pressure was 625 ± 25 kPa. …
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Three dimensional modelling of Electrical Impedance Tomography
… question of the validity of the employed quasi-static conditions used in the associated Forward Problem modelling. It is important to be able to determine when the quasi-static conditions fail and to investigate the differences between a solution to the Forward Problem based on quasi-static …
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Dynamic Properties of Chondrocytes
… are vital in both physiological and pathological conditions. This thesis focuses on developing methods to study the effects of dynamic cyclic compression loading on chondrocyte volume and shape changes, not only at the beginning and end of the loading cycle but, crucially, throughout the loading …
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The SCC behavior of austenitic alloys in an oxygen-free CO₂ environment containing chloride ions
… containing chloride ions was studied under static conditions. Stiffness and X-ray measurements supported results obtained from SEM photomicrographs indicating that the CT specimens loaded to a stress intensity of 22 ksi-in<sup>.5</sup> were not susceptible to SCC in this environment. These …
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Adsorption of organic friction modifiers at static and sheared interfaces
… oxide-dodecane interface is investigated under static conditions and under applied shear. The study of the interface under applied shear is facilitated by the use of a novel sample environment, referred to as the tribometer, for neutron reflectometry (NR) and X-ray reflectometry (XRR). The …
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Antithrombotic agents under flow conditions
… under a wide range of flow rates. To mimic these conditions in vitro, a parallel plate flow chamber with human umbilical vein endothelial cells (HUVEC) or extracellular matrix (ECM) has been developed. A method to investigate thrombin generation (TG) in platelet rich defibrinated plasma was …
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Class E amplifiers and their modulation behaviour
… has very high drain efficiency under quasi-static conditions, and is a good candidate for Envelope Elimination and Restoration (EER) or other polar techniques. Unfortunately it has an unusual carrier frequency response, for which no analytic expression was known; this may have limited …
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ΕΡΕΥΝΑ ΕΠΙ ΤΗΣ ΔΙΑΓΝΩΣΤΙΚΗΣ ΑΞΙΟΠΙΣΤΙΑΣ ΤΩΝ ΣΥΣΤΗΜΑΤΩΝ
… IS RESEARCHING THE BEHAVIOUR OF THE MATERIALS IN STATIC CONDITIONS AND THE SECOND PART STUDIES THE RESULTS THAT HAVE THE DYNAMIC LOADING ON THE STRUCTURES AND ON THE MATERIALS GENERALLY. THE METHOD THAT IS USED FOR THE EXPERIMENTAL PROCEDURE IS THIS OF SPECTRUM ANALYSIS. NAMELY A PROPER MONITORING …
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Dynamic analysis of rotating fan structures by the Finite Element Method
… structures, having different geometries, under static conditions and under centrifugal forces at various angular velocities. The results of the analysis are correlated with experimental data. The Southwell Coefficient, which takes into account the effect of centrifugal stiffening/softening, is …
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Processing parameters and kinetics of phosphate-based dechlorination for electrorefiner salt waste
… it was found that at T ≥ 300°C, in quasi-static conditions, metaphosphate Q1 and Q2 units are formed in both air and argon. Following these findings, materials were processed to 300˚C under low gas flow conditions (0.1-0.2 LPM) at heating rates of 1, 5, and 10°C min-1. Dechlorination …
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Characterization and Development of General Material Models for Use in Modeling Structures Bonded with Ductile Adhesives
… used in structural applications under quasi-static conditions. Furthermore, the results also show that it is also possible to take bulk material data and apply it to an adhesively bonded specimen provided that the mode of failure of the bulk test specimen closely approximates the mode of …
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Biomechanical regulation of cancer metastasis
… system, adhere to the endothelium of the metastatic site, and migrate out into the surrounding tissue. A major limitation in the discovery and development of drugs that prevent the spread of cancer is a lack of high throughput in vitro assays that accurately recreate the cell-cell interactions …
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DEM simulated floor pressure induced by a granular column
… displaced at a rate so as to maintain quasi-static conditions. Various combinations of wall and inter-particle friction coefficients are examined. The simulated behavior of the load vs. fill level was found to fit well to the functional form of Janssen's theory. Moreover, quantitative …
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Fan noise reduction from a supersonic inlet
… were conducted at an outdoor facility under static conditions. An attempt is made to reduce the fan noise radiated in the forward sector by modifying the auxiliary inlet doors. The modified doors are designed to reduce the inlet distortion to the fan face. In addition, the new design also …
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Regulation of β2-integrins by signalling pathways and cytoplasmic interacting partners
… which regulate lymphocyte adhesion under flow conditions and integrin recycling and integrin-mediated phagocytosis in myeloid cells, respectively.<br/><br/>Traditionally, cell adhesion assays have been carried out in static conditions using immobilized ligands. We have now developed shear flow …
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Dynamic simulations of particle suspensions subjected to an external electric-field
… experience both hydrodynamic and electrostatic interactions. The hydrodynamic force acting on the particles is determined using the Stokesian dynamics method under the assumption that the Reynolds number is much smaller than 1, while the electrostatic force is determined by …
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Static and Microfluidic Live Imaging Studies of Plasmodium falciparum Invasion Phenotypes
… sequences in live cultures under controlled conditions and addressing the morphology and kinetics of erythrocyte invasion by $\textit{P. falciparum}$. In addition, the erythrocyte invasion phenotypes of the various $\textit{P. falciparum}$ strains were systematically investigated for the …
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The effect of applied fields on crystallisation
… compared to the those obtained under zero field conditions. The results for the sucrose study where the magnetic treatment was carried out under static, dynamic pumped and dynamic syphoned conditions domonstrated that changes in phase, crystallinity, morphology and microcrystallinity were a …
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Adhesive properties of thermoset fibre metal laminates
… enhance adhesion were investigated under quasi-static conditions using Single Leg Bend tests. Chemical surface treatments such as alodining, etching, anodising, silane treatments and combinations thereof were investigated. The effect of resin and the inclusion of a film adhesive were also …
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Reduced fan noise radiation from a supersonic inlet
… simulated aircraft takeoff engine speeds under static conditions. Steady-state measurements of the inlet flow field were made along with far field acoustic measurements of the fan noise. The results show the new door geometry is successful in reducing circumferential flow distortion at the fan …
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