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 56 for “"MPD"”.
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Computational and experimental analysis of HIIPER MPD propulsion system
Helicon Injected Inertial Plasma Electrostatic Rocket (HIIPER) is a deep space electric propulsion system developed on the principles of inertial electrostatic confinement (IEC) fusion and helicon plasma injection. It is a stepping stone towards a variable impulse pulsed fusion rocket. HIIPER …
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An explanation for anode voltage drops in an MPD thruster
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Investigation of the GEM MPD thruster using the MACH2 magnetohydrodynamics code
This work investigated using the MACH2 plasma simulation code in replicating the results of previous experimental work on the gallium electromagnetic (GEM) thruster. MACH2 was also used to examine possible changes to the GEM thruster that could improve the performance of the actual thruster. …
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Role of Dopamine of Nucleus Accumbens In Behavioral Sensitization to Methylphenidate
… by chronic treatment with methylphenidate (MPD), a psychostimulant that is widely used to treat attention deficit hyperactivity disorder. The dopaminergic afferents can be selectively destroyed using catecholamine neurotoxin 6-hydroxydopamine (6-OHDA). In order to determine whether …
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Ventral Tegmental Area Neuronal Responses to Methylphenidate Correlated to Behavioral Responses of Adolescent and Adult Rats
<p>Methylphenidate (MPD) is a psychostimulant used in the treat treatment of attention deficit hyperactivity disorder and more recently is being used as a cognitive enhancement and recreational drug. Its therapeutic effects are not fully understood, nor are the long term effects of the drug on …
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Assessment of Multiple Personality Disorder Using Art Therapy
… given more frequently in the past few years. MPD has also received much press and has been somewhat sensationalized in the media.</p> <p>Consequently, there has been a sharp increase in the misdiagnosis of MPD.</p> <p>Verbal interviews and other assessments have failed to accurately diagnose …
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An Examination of Missoula Citizens' Perceptions of Local Law Enforcement
… perceptions of the Missoula Police Department (MPD). This study could help the MPD understand what are the most important factors influencing Missoula citizens' perceptions of their local police agency. Several sets of multiple regression models were estimated to assess the effect of …
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An Examination of Missoula Citizens' Perceptions of Local Law Enforcement
… perceptions of the Missoula Police Department (MPD). This study could help the MPD understand what are the most important factors influencing Missoula citizens' perceptions of their local police agency. Several sets of multiple regression models were estimated to assess the effect of …
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Quality Assurance for Chip Seals Using Mean Profile Depth
… This study used Mean Profile Depth (MPD) as a macrotexture metric for the quality assurance of chip seals. Field data were collected using state-of-the-art equipment from the Virginia Department of Transportation (VDOT) area. Considering both qualitative (visual assessment) and …
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Neuronal and Mitochondrial Protection in Chronic Parkinsonism
… the chronic mouse model of Parkinson’s disorder (MPD), which has been developed and characterized by our laboratory as a suitable animal model for investigating neuronal and mitochondrial dysfunctions and then to examine the protective effects of endurance exercise and melatonin treatment on this …
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Hydrolysis and Toxicity of Aspartyl Peptides and the Influence of Metal Ions on Aspartyl Peptide Hydrolases in Salmonella Enterica Serovar Typhimurium
Extracts of a multiply peptidase deficient (MPD)(pepN,A,B,D,P,Q,T,E,iadA,iaaA ) Salmonella enterica serovar Typhimurium strain contain an aspartyl dipeptidase activity which is dependent on Mn2+. Purification of this activity followed by N-terminal sequencing of the protein suggested that the …
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Applications of powder interlayers for large gap joining
… of powders of the melting point depressant (MPD) and the base material, from which a great amount of MPD (>30 vol.%) usually has to be used to eliminate residual porosity. To reduce the MPD in the joint, the liquid infiltrated powder interlayer bonding (LIPB) process was developed. For a …
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Growth dynamics, charge density, and structure of polyamide thin-film composite membranes
… trimesoyl choride (TMC) and m-phenylenediamine (MPD) monomer concentrations on the polyamide charge concentration in the near-surface region by X-ray photoelectron spectroscopy (XPS) and in the bulk by RBS; and (3) proposing a technique for measuring polyamide structures using wide-angle X-Ray …
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Numerical Evaluation of Various Well Control Methods with Emphasis on Application in Managed Pressure Drilling Operation
Managed Pressure Drilling (MPD) is a modified drilling process designed to accurately manage the annular pressures of the wellbore with a combination of surface back pressure (SBP), flow rate and drilling mud density. MPD is designed to identify and circulate out kicks (uncontrolled flow of …
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Enhancing Pavement Surface Macrotexture Characterization
… outliers) to obtain the Mean Profile Depth (MPD) from the measurements with the spikes removed. The method was validated by comparing the results with MPD measurements obtained with a Circular Texture Meter (CTMeter) that was chosen as the control device. Although this first method was able …
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The human myeloproliferative disorders: molecular pathogenesis and clonal heterogeneity
The classical myeloproliferative disorders (MPD), comprising essential thrombocythaemia (ET), polycythaemia vera (PV) and idiopathic myelofibrosis (IMF), are clonal premalignant haematopoietic neoplasms associated with activating mutations in signalling pathway molecules and a variable tendency to …
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INSIGHTS ON THE CROSSTALK BETWEEN THE IMMUNE SYSTEMAND CANCER: IMMUNE CHECKPOINT MOLECULES AND LYMPHOIDPOPULATIONS ASSESSMENT IN CANINE ROUND CELL TUMORS
… the expression of the surface membrane protein (mPD-L1) by means of flow cytometry (FC), mRNA by real-time qPCR, and soluble protein (sPD-L1) plasmatic concentrations by competitive ELISA in dogs with nodal lymphoma. Their potential prognostic role was also investigated. B-cell lymphomas showed …
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Evaluation of the Repeatability and Reproducibility of Network-Level Pavement Macrotexture Measuring Devices
… the reproducibility of the mean profile depth (MPD) measurements with reference CT Meter measurements. The various data sets were then compared with each other. The objective was to determine whether the two systems are collecting repeatable and reproducible data. The analysis showed that the …
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Investigating cortical arousal and cognition in schizophrenia and methamphetamine-induced psychotic disorder: an electroencephalography and cytokine study
… and methamphetamine-induced psychotic disorder (MPD), are psychotic disorders characterized by positive symptoms (e.g., hallucinations and delusions), negative symptoms (e.g., social withdrawal, apathy), and impaired cognitive function. Despite the overlap in the clinical presentation of SCZ and …
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Enhancing Network-Level Pavement Macrotexture Assessment
… have good repeatability (between 0.06 to 0.09mm MPD) and interchangeability of single-spot laser dfevices was demonstrated via a limits of agreement analysis. The operational factors of speed and acceleration were shown to affect the resulting MPD of several devices and guidelines are given for …
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