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 27 for “"MWS"”.
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Reliability of Integrated Municipal Water Systems: Implications of Drought
… of integrated municipal water systems (MWS). They subject MWS to a combined effect of increased demands and decreased supplies. Both water supplies and demands are driven by variability of climate conditions such as rainfall and temperature.
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Characterizing the Innate Immunity in the Hawaiian Coral Montipora capitata
… tissue loss disease Montipora white syndrome (MWS). MWS disease prevalence within Kaneohe Bay varies, with lower prevalence in the North than South Bay and with orange colonies more susceptible than red colonies. To begin to characterize the immune system of M. capitata, I measured baseline …
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The Study Of Vinyl Ester Copolymers Derived From Bio-Sourced Fatty Acids
… the feed ratio. The average molecular weights (MWs) decreased with increasing LVE composition. </p> <p>Thermomechanical property measurements showed that the glass transition temperatures of the resultant copolymers decreased with increasing LVE compositions. This indicates the side chains of …
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Part I: Peptide Dendrimers From Natural Amino Acids. Part II: Nonfullerene Nanotubes From Bridged Dendritic Metalloporphyrin Complexes
… attempt to obtain more reliable average MWs, SEC was calibrated with three monodisperse dendrimers, giving the average MWs of 30,490 Da for 51 and 39,660 Da for 53'."
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Directed assembly of functional patterns
… with a focus on nanowires: 1) molecular wires (MWs) with oligophenyleneethynylenic (OPE) backbone were produced by organic synthesis methods and used for the interfacial assembly of MWs/NPs hybrid thin films; 2) conducting polymer (CP) polyethylenedioxythiophene (PEDOT) micro- and nanowires were …
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Physiological response of loblolly pine seedlings to moisture-stress conditioning and their subsequent performance during water stress
… a watered control, a moderate stress treatment (MWS, seedlings watered only when needle water potential reached -0.8 MPa) and a severe stress treatment (SWS, seedlings watered only when water potential reached -1.4 MPa). After the conditioning period, numerous physiological and morphological …
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Size reduction of vivaldi antenna array for microwave imaging
… Simulation Technology for Microwave studio (CST MWS) reducing the size of antenna will lead to gain reduction as well. Therefore, it is crucial to obtain a compact antenna with an acceptable return loss and radiation pattern. Hence, a single element antenna of size (36×42.8
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Optimum time to refurbish a boiler feed pump at Eskom's power stations
… the installed BFPs consume approximately 1000 MWs of auxiliary power continuously. The focus of the study is to understand how the BFPs efficiency changes with time as a result of increased internal clearances and the effect this has on the auxiliary power consumption. An in-depth analysis of …
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The delay performance of adaptive routing and scheduling in communication networks
… of algorithms called MaxWeight Scheduling (MWS) algorithms is known to be throughput optimal. A particular algorithm in this class was conjectured to be delay-optimal as well. We disprove this conjectured by constructing a delay-optimal algorithm for a specific network and show that it …
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Contributions towards a coherent chaotic oscillator at 100MHz and 70 GHz antennas for automotive radar applications.
… using both Computer Simulation Technology (CST-MWS) and High Frequency Structure Simulator (HFSS), in addition, two feeding techniques are realized. The first one uses a grounded CPW line, which allows the antenna to be tested using infinity probes and the second one uses a WR-12 rectangular …
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Amino acid N-carboxyanhydrides and polypeptides: Controlled polymerization, properties and applications
… the controlled ROP of various NCAs. Predicable MWs and narrow molecular weight distributions (MWDs) of homo- and block- polypeptides can be prepared via this methodology. Our mechanism study illustrated that the polymerization involves formation of trimethylsilyl carbamate (TMS-CBM) structure at …
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Development of Controlled Ring-Opening Polymerization of O-Carboxyanhydrides
… groups, unpredictable molecular weights (MWs), or slow polymerization kinetics. Based on our recent success of Ni/Ir photoredox catalysis allowing for rapid synthesis of high-MWs polyesters, we further explore new polymerization chemistry to use earth-abundant metal complexes to replace …
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Focal waveform of a prolate-spheroidal impulse radiating antenna (IRA)
… experimentally and simulated using the CST-MWS (Microwave Studio) software. Finally, different lens design procedures are discussed for a prolate-spheroidal IRA for better concentrating the energy from an impulse.
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Design of reflectarray antenna integrated with FSS textured configurations for wireless communication applications
… commercially available computer models of CST MWS and Ansoft HFSS based on Finite Integral Method (FIM) and Finite Element Method (FEM) respectively. Frequency Selective characteristics are also exploited by embedding the dipole, square loop and triangular loop resonant elements on top of the …
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Dual band monopole antenna with harmonic suppression capability
… ISM band. The antenna was simulated using CST MWS. The proposed antenna was having a dual band operation with harmonics in the higher order bands. In order to reduce the harmonic of the antenna. The stub loaded feed line was proposed. Three different length stubs were attached with the antenna …
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State-business relations and economic transition in the modern world-system: a comparative study of South Africa and Zimbabwe
… of SBRs regarding the mining industry from the MWS perspective in South Africa and Zimbabwe has not yet been attempted. This study explores the policy choices related to the mining industries in the two countries in order to examine the nature of and reasons for different trajectories in terms …
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Διερεύνηση της νοηματοδότησης μαθηματικών εννοιών μέσω αυθεντικών προβλημάτων στο Λύκειο: Η περίπτωση της πτήσης αεροσκάφους
… του πλαισίου των Mathematical Working Spaces (MWS) και του κύκλου μοντελοποίησης των Blum & Leiss, ενώ η αυθεντικότητα του προβλήματος προσεγγίστηκε με βάση τα κριτήρια του Palm. Τα ευρήματα δείχνουν ότι οι γεωμετρικές έννοιες δεν εμφανίζονται ως έτοιμη γνώση προς εφαρμογή, αλλά …
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Landscape and environmental controls on soil organic matter decomposability in the High Arctic
… decomposability and found that moist wet sedge (MWS) had significantly higher alkyl/O-alkyl ratios and molecular diversity than dry wet sedge (DWS). Positive correlation was observed between field moisture and CO2 production (mg/gC) with field moisture (FM) predicting about 20% of the variation …
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Combined bioreaction and separation in centrifugal fields
… produced up to 100% more clinical dextran with MWs of between 12 000 and 98 000 at 20% w/w sucrose concentrations than conventional bioreactors. This was due to the removal of acceptor fructose molecules from the sedimenting reaction zone by the action of the centrifugal field. Higher …
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Substrate integrated waveguide microwave antenna and filter design using H-fractal unit cell
… antenna was designed and simulated by using CST MWS formulations. The antenna is fabricated on Roger RO4003C substrate with thickness of 1.52 mm. The measured S11 of 10 dB, gain of 5.4 dB, and efficiency of 82 % are achieved at these two bands. The proposed antenna was miniaturized by using …
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