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 73 for “"EMF"”.
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Investigating the alignment between EMF and the strategic planning context
An Environmental Management Framework (EMF) can be a useful tool for determining the desirability of specific activities when considered against environmental priorities and sensitivities at both the local and regional level. EMF intends to function in unison with other strategic planning …
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RF-EMF Radiation Exposure and Radio Resources Management in 5G Wireless Network
… and radiofrequency electromagnetic field (RFEMF) radiation exposure (a health challenge on user) emitted in both the uplink and downlink of wireless networks, especially the 5G mobile network. Therefore, this research aims to assess the impacts of these challenges, develop and evaluate …
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Direct Back EMF Detection Method for Sensorless Brushless DC (BLDC) Motor Drives
… control scheme with the conventional back EMF sensing based on motor neutral voltage for BLDC has certain drawbacks, which limit its applications. In this thesis, a novel back EMF sensing scheme, direct back EMF detection, for sensorless BLDC drives is presented. For this scheme, the motor …
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The effects of a 1.8 GHz continuous electromagnetic fields on mucociliary transport of human nasal mucosa
… of a 1.8 GHz continuous electromagnetic fields (EMF) on human nasal mucociliary transport and to determine the pathophysiology of ciliary beat frequency (CBF) during an EMF-induced change. Human nasal mucosa cells were exposed to a 1.8 GHz EMF (SAR= 1.0 W/kg), and CBF was analyzed using an …
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Part I. Chemical Theory and Emf Studies of Highly Solvated Liquid Metal Systems. Part Ii. The Compressibility of The Chemical Reaction Transition State
Made available in DSpace on 2014-12-13T18:55:30Z (GMT). No. of bitstreams: 1 7606965.pdf: 7509509 bytes, checksum: bb4a12e09b36c4ed634412e16f88a4db (MD5) Previous issue date: 1975
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Community Ecology Of Soil Microbes In Southeast Usa Oak-Pine Woodlands
… and enzyme activities of Ectomycorrhizal fungi (emf). Chapter 2 considers whether host specificity in emf structures taxa occurrence on oaks and pines, and chapter 3 investigates how ash addition affects oak seedling growth and the soil bacterial community. I found that while wildfire lowered emf …
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Mycorrhizal fungus communities of Douglas-fir (Pseudotsuga menziesii) seedlings and trees: effects of proximity to residual trees
… and colonization by ectomycorrhizal fungi (EMF) is not well understood. To investigate this, Douglas-fir seedlings were planted near (<6 m) and far (>16 m) from 44- to 72-year-old residual Douglas-fir trees at three sites in western Washington, USA. Seedling stem growth was measured from …
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Rotational speed dependent motor properties
… (AC) motors experience back electromotive force (EMF) at high rotational speeds, which acts against applied voltage and drops motor efficiency steeply. By reducing the magnetic flux surrounding the coil of the stator, back EMF can be reduced and motor efficiency can be maintained at any rotational …
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An evaluation of the implementation of the normative objectives set for Environmental Management Frameworks in selected case studies in Gauteng and the Northwest Province, South Africa
… of these Environmental Management Frameworks (EMFs): the City of Tshwane Metropolitan Municipality’s Zone of Choice EMF, Ekurhuleni Metropolitan Municipality’s EMF and the Tlokwe Municipality’s EMF. The objectives include the provision of a mechanism and decision support tool for the study area …
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Investigation of electromagnetic welding
… process for Electromagnetic Forming (EMF) and Welding (EMW), thereby lowering the necessary process energy up to a factor of three and lengthening the life-time of EMW compression coils. We present a new theoretical approach to calculate a so-called critical kinetic energy to achieve a …
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IDENTIFICATION OF Cav 3.2 T-TYPE VOLTAGE GATED CALCIUM CHANNELS AS KEY MEDIATORS OF TARGETED INHIBITION OF HEPATOCELLULAR CARCINOMA BY AMPLITUDE-MODULATED RADIOFREQUENCY ELECTROMAGNETIC FIELDS
… MHz radiofrequency electromagnetic fields (AM RF EMF) delivered via a spoon - shaped antenna placed on the patient’s tongue results in shrinkage of the primary and metastatic tumors in patients with advanced hepatocellular carcinoma (HCC). The mechanism by which AM RF EMF have direct …
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METFORMIN, CLIC1 AND TRANSCRANIAL STIMULATION: THE BASIS OF A NEW TARGETED THERAPY AGAINST GLIOBLASTOMA RELAPSE
… Pulsed depolarizing electromagnetic field (EMF) stimulation should increase tmCLIC1 close-to-open transitions and, consequently, the availability of metformin binding sites. The application of EMF stimulation resulted in a 10-fold decrease of metformin concentration (1mM) needed to have the …
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Yttrium, Gadolinium, and Lutetium Based Endohedral Metallofullerenes: From Synthesis to Application
Endohedral metalofullerenes (EMFs) have emerged as an important class of nanomaterials with vast promise in applications of molecular devices and nanomedicines. This dissertation addresses the EMF research span from synthesis to application, with an emphasis of work on trimetallic nitride template …
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Electromagnetic stimulation of a composite scaffold for wound healing
… radicals. Meanwhile, electromagnetic fields (EMFs) have been explored as an adjunct therapy for chronic wounds due to clinical evidence of wound healing enhancement. This dissertation investigated the incorporation of all three in the design and evaluation of an electromagnetically-stimulated …
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Assessing the effectiveness of the Environmental Impact Assessment (EIA) process as a protective measure for indigenous plant species within the Sandveld area, from a conservation perspective
… the Sandveld Environmental Management Framework (EMF). The EMF allows for the implementation of Farm Level Management Plans; however, these are site-specific and have limitations. After discussing the Sandveld EMF, via a Microsoft Teams call on 2 August 2022, with the DEA&DP officials who drafted …
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Development of a new single-phase field excitation flux switching motor topology with segmental rotor
… is presented. The design, flux linkage, back-EMF, cogging torque, average torque, speed, and power of this new topology are investigated by JMAG-Designer via a 2D-FEA. As a results the proposed motor has achieved torque and power of 0.91Nm and 293W, respectively. To prove the simulation result …
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Single-Vector Aiding of an IMU for CubeSat Attitude Determination
… determination using the Earth’s magnetic field (EMF) vector aiding a low-cost IMU. CubeSats provide relatively cost-effective methods of performing scientific research in orbital environments. However, to adequately perform this research, knowledge of the CubeSat’s orientation in 3D space …
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Modellgetriebene Entwicklung mit Graphtransformationen
… bietet eine echte Erweiterung des EMF-Rahmenwerks, einem in Industrie und Forschung etablierten Werkzeug zur Strukturmodellierung (und anschließender Quelltextgenerierung) mit Ecore-Klassendiagrammen. Dabei steht die Vervollständigung von EMF um die - bislang fehlende - …
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Design and development of a small-scale 12S-14P outer rotor HEFSM
… optimisation process. Thus, the generated back EMF, torque, and power through simulation at a speed of 1,200 r/min is 6.58 V, 16.4 Nm, and 12.4 kW, correspondingly. The designed model has been fabricated using actual prototype analysis (APA) approach, which is involves five stages, namely 3-D …
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