- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 431 to 440 of 12235 (0.08 seconds)| 431 |
The molecular basis of symptom expression in cauliflower mosaic virus-infected plantsStratford, Rebecca January 1989 (has links)
No description available.
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| 432 |
Inhibition of the multidrug resistance-associated protein : an antisense and ribozyme approachCochrane, Guy R. January 1999 (has links)
No description available.
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| 433 |
Resistance to cereal aphids in wheatAcreman, T. M. January 1985 (has links)
No description available.
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| 434 |
The relationship between the chromosomes of Dasypyrum villosum and Triticum aestivum and its potential for wheat improvementUslu, Emel January 1997 (has links)
No description available.
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| 435 |
The resistance of Pisum to Ascochyta pisiBrittain, M. J. January 1987 (has links)
No description available.
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| 436 |
Introduction and expression of transgenes in lettuce (Lactuca sativa L.)Mohapatra, Umaballava January 1998 (has links)
No description available.
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| 437 |
The inheritance of host-specific pathogenicity in Phytophthora infestansAl-Kherb, S. M. January 1988 (has links)
No description available.
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| 438 |
Resistance spot welding equipment controller - Beijer iX T7B Softmotion based weld equipment controllerHermansson, Olaf January 2016 (has links)
The goal of the project is to evaluate a new setup for the company Iberobot Svenska AB, using HMI and PLC, for resistance spot welding equipment controller. The purpose of the controller is to control the weld process; weld power and time. One of the question raised is if this setup could be used as an RWE controller and thereby be able to re-place an old proprietary controller called TEC6000. A prototype is built compatible with current single phase RWE and literature study is conducted to answer this question. The new setup is based on Beijer iX T7B Softmotion which includes an HMI and a PLC with EtherCAT support. EtherCAT input and output modules from Beckhoff are chosen because they can handle the speed required by the weld process. The controller is implemented using theory for RMS value, timing diagram and state diagram based on weld process. The prototype is revised three times. A zero crossing detector is implemented. A control element driver using opto-triac is implemented. Measurements using oscillo-scope are conducted which shows that the controller is able to start a weld, but zero crossing detection is unstable and further research into this and current regulation is needed before an end user product can be made.
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| 439 |
The Production of Fragile Cysts by an Aberrant Strain of Azotobacter Chroococcum Isolated from SoilCagle, Gerald D. 05 1900 (has links)
The purpose of this study is to determine if a strain of Azotobacter chroococcum isolated from the soil in northern Louisiana produces cysts which are as resistant to deleterious agents as those produced by previously reported strains os Azotobacter.
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| 440 |
Heat Resistance in Vegetative Cells and Cysts of AzotobacterRosenthal, Raoul S. 08 1900 (has links)
The purpose of the current study is to determine something of the nature of the heat resistance in Azotobacter, if in fact this is found to exist. An attempt is made to determine the specific physiological state associated with heat resistance as well as to resolve this resistance quantitatively.
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