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Studies in the use of plant growth regulators on phytoremediation /Fuentes, Hector David. January 2001 (has links)
Thesis (Ph.D.) -- University of Western Sydney, Macarthur, 2001. / A thesis presented to the University of Western Sydney, in partial fulfillment of the requirements for the degree of Doctor of Philosophy, December, 2001. Bibliography : leaves 163-173.
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Development of an improved on-line voltage stability index using synchronized phasor measurementGong, Yanfeng. January 2005 (has links)
Thesis (Ph.D.) -- Mississippi State University. Department of Electrical and Computer Engineering. / Title from title screen. Includes bibliographical references.
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Application of STATCOM for improved dynamic performance of wind farms in a power gridJayam Prabhakar, Aditya, January 2008 (has links) (PDF)
Thesis (M.S.)--Missouri University of Science and Technology, 2008. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 12, 2008) Includes bibliographical references (p. 64-66).
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Flicker propagation in radial and interconnected power systemsTennakoon, Sankika. January 2008 (has links)
Thesis (Ph.D.)--University of Wollongong, 2008. / Typescript. Includes bibliographical references: page 150-155.
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System design and power management for ultra low energy applications using energy harvesting techniques /Shao, Hui. January 2009 (has links)
Includes bibliographical references (p. 143-153).
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Effect of the ecdysone agonists, methoxyfenozide and tebufenozide, on European and Southwestern corn borers in vivo and in vitro /Trisyono, Y. Andi, January 1999 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 1999. / Typescript. Vita. Includes bibliographical references (leaves 130-148). Also available on the Internet.
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Plant growth regulators : an alternative to frequent mowing /Johnson, Robert Jean. January 1990 (has links) (PDF)
Thesis (M.S. in Management)--Naval Postgraduate School, June 1990. / Thesis Advisor(s): Carrick, Pual M. "June 1990." Description based on signature page. DTIC Identifier(s): Plant growth regulators, growth indicators. Author(s) subject terms: Plant growth regulators, growth indicators. Includes bibliographical references (p. 39-40). Also available online.
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In vitro propagation of Dierama erectum /Koetle, Motselisi Jane. January 2009 (has links)
Thesis (M.Sc.) - University of KwaZulu-Natal, Pietermaritzburg, 2009. / Full text also available online. Scroll down for electronic link.
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Opportunities for in-line, transistorbased technologies on MV and LV power distribution networksMeyer, Bernard 12 1900 (has links)
Thesis (MScEng)--University of Stellenbosch, 2000. / ENGLISH ABSTRACT: Once more opportunities exist for innovative technologies to be applied on MV and LV
power distribution networks to meet the new challenges set by government through its
National Electrification Programme (NEP) to electrify a further 2,5 million households of
which a large majority are in low-density rural areas. Electronic means of voltage
compensation of long MV and LV networks supplying these low-density rural areas are now
possible in the form of electronic voltage regulators mounted on the secondary side of
distribution transformers and service connection boxes along the LV feeders.
Furthermore, it is now possible to provide remote rural agricultural customers with singlephase
supplies supported by end-use technologies in the form of electronic phase converters
that eliminate the need for three-phase supplies. This hybrid of supply- and end-use
technologies together with Eskom's "self-build" policy has made the dream of Eskom grid
power a reality. / AFRIKAANSE OPSOMMING: Nuwe geleenthede het na yore getree vir die toepassing van innoverende tegnologie op
medium- en laagspannings netwerke in antwoord op die uitdagings gestel deur die regering in
die vorm van die Nasionale Elektrifiseringsprogram (NEP). Die elektrifisering van 'n verdere
2,5 miljoen huishoudings waarvan die grootste gedeelte in yl bevolkte plattelandse gebiede is,
word in vooruitsig gestel. Spanningskompensasie van lang laag- en mediumspannings
netwerke word nou moontlik gemaak deur middel van elektroniese spanningsreguleerders,
gemonteer aan die sekondere kant van distribusie transformators en in diensaansluitingskaste
op laagspannings voerders.
Verder is dit ook nou moontlik om afgelee landelike plase met enkelfase krag, gerugsteun
deur eindverbruik tegnologie in die vorm van elektroniese fase omsetters, te voorsien. Die
beskikbaarheid van hierdie tegnologie elimineer die vraag na drie-fase krag. Hierdie hibriede
kombinasie van toevoer- en eindverbruik tegnologie in kohesie met die selfbou beleid van
Eskom, maak dit moontlik dat 'n droom van Eskom voorsiende elektrisiteit, in 'n werklikheid
omskep word.
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Voltage control of medium to high power three-phase inverter supply systemsJacobs, D. M. (Danver Maxwill) 12 1900 (has links)
Thesis (MScEng)--University of Stellenbosch, 2001. / ENGLISH ABSTRACT: In this thesis a new voltage control method is developed for a three-phase inverter
supply system. The inverter supply system consist of a Permanent Magnet Generator, a
three-phase rectifier, a three-phase inverter plus LC-filter and a three-phase transformer
in series. This system supplies power to a network or to a stand-alone load. The main
focus of this thesis is on the control aspects of the inverter and the LC-filter.
Different voltage control systems are investigated and compared to each other. From
these methods the proposed voltage control method is developed where only the output
voltages are measured to establish good voltage control. All these voltage control
methods are also simulated with a software package. The proposed voltage control
method compares very well with other voltage control methods. The results that are
obtained in the simulations are satisfactory. The proposed voltage control method is also
implemented in an 8 kW laboratory scale model and, again, very good practical results
are obtained. A TMS320F240 nsp controller is used to implement the proposed voltage
control method. The controller compensates well for load steps, and these results
compare well to an alternative voltage control method, which was also evaluated
practically. / AFRIKAANSE OPSOMMING: In hierdie tesis IS 'n nuwe spanningsbeheermetode ontwikkel VIr 'n drie-fase
wisselrigter kragtoevoerstelsel. Die wisselrigter kragtoevoerstelsel bestaan uit 'n
Permanent Magneet Generator, 'n drie-fase gelykrigter, 'n drie-fase wisselrigter plus
Le-filter, en 'n drie-fase transformator in serie. Hierdie stelsel voorsien krag aan 'n
netwerk sowel as aan 'n alleenstaande las. Die hooffokus van hierdie tesis is op die
beheeraspekte van die wisselrigter en Le-filter.
Verskillende spanningsbeheermetodes is deeglik ondersoek en vergelyk met mekaar.
Uit hierdie metodes is dan die voorgestelde beheermetode ontwikkel waar slegs die
uittreespanning gemeet word om goeie spanningsbeheer te kan doen. Al hierdie
spanningsbeheermetodes is dan gesimuleer met 'n sagteware pakket. Die voorgestelde
spanningsbeheermetode vergelyk baie goed met die ander spanningsbeheermetodes. Die
resultate verky in die simulasies is ook baie bevredigend. Die voorgestelde
beheermetode is ook geïmplementeer op 'n 8 kW laboratorium skaalmodel en weereens
is baie goeie praktiese resultate verky. 'n TMS320F240 DSP-beheerder is gebruik om
die voorgestelde beheermetode mee te implementeer. Die beheerder kompenseer baie
goed vir lastrappe en vergelyk ook goed met 'n ander spanningsbeheermetode wat
prakties ge-evalueer is.
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