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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.
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Showing 91 to 100 of 1423 (0.037 seconds)Spelling suggestions: "subject:"lead -""
| 91 |
Reaction of F3 lines of the cross Wichita 5 x Chinese and Aegilops umbellulata to several races of leaf rustSoliman, Atef Shafik. January 1962 (has links)
LD2668 .T4 1962 S65
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| 92 |
Application of a particle filtration method in the search for new bioactive natural products from fungiYusof, Mohd Termizi Bin January 2008 (has links)
Fungi have been an important source for producing a wide range of secondary metabolites of widely differing chemical structures, as well as biological activities. Many of their metabolites now play a major role in pharmaceutical and agricultural industries. A number of fungi were isolated from soil and leaf litter collected from Arthur’s Pass, West Coast and Kaituna Valley using a particle filtration technique. Fungi were selected based on their unusual morphology or observed cytotoxicity and antimicrobial activity for large scale culture and extraction. A pale yellow compound was isolated from cytotoxic extracts from the culture of Aspergillus versicolor. This compound was identified as sterigmatocystin and the identity confirmed by UV profile and mass spectrometry. Five compounds were isolated from extracts prepared from two different species of Penicillium of which three were active against P388 cells (mycophenolic acid, cycloaspeptide A and mevastatin), one was active against dermatophytes (griseofulvin) and one was not active (3,4,6,8-tetrahydroxy-3-methyl-3,4-dihydroisocoumarin). Two compounds were isolated from extracts prepared from two different species of Phoma. A dark red compound was found to be novel and showed activity against P388 cells and Bacillus subtilis. A second compound also showing cytotoxicity was identified as the known compound phomenone. A further new compound was isolated from extracts of an identified dematiaceous fungus. This alkyl glucoside, however, was not bioactive.
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| 93 |
The environmental history of Washing Lough, Kilrea, Co. Derry, Northern IrelandBrowne, B. J. January 1989 (has links)
No description available.
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| 94 |
Biodiversity and community ecology of mangrove plants : molluscs and crustaceans in two mangrove forests in Peninsular Malaysia in relation to local management practicesAshton, Elizabeth C. January 1999 (has links)
No description available.
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| 95 |
Chilling-induced physiological dysfunction in leaves of Zea mays L. and Capsicum annuum L. seedlingsSaropulos, Athanassios S. January 1995 (has links)
No description available.
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| 96 |
Climate change : carbon partitioning in plantsBailey, Susan J. January 1996 (has links)
No description available.
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| 97 |
Mechanisms of floral maintenance in Impatiens balsamina LTooke, Fiona January 2000 (has links)
No description available.
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| 98 |
Insect herbivory on herbaceous legumesHector, Andrew January 1996 (has links)
No description available.
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| 99 |
Functional analysis of bundle sheath defective2Sawers, Ruairidh J. H. January 2000 (has links)
No description available.
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| 100 |
Phenotypic characterization of maize bundle sheath defective mutantsRoth, Ronelle January 1997 (has links)
No description available.
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