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  • About
  • 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.
141

Onchocerciasis in Ecuador : a cellular immunological and epidemiological investigation of chorioretinopathy

Cooper, Philip January 1994 (has links)
No description available.
142

Troubleshooting Problems with Roses

Bradley, Lucy, McKusick, Rod 06 1900 (has links)
3 pp. / This publication contains guidelines for identifying and managing pests and diseases of Roses.
143

Diagnosing Problems of Roses in the Landscape

Kelly, Jack 09 1900 (has links)
5 pp. / Revision of AZ1306: Troubleshooting Problems with Roses in the Low Desert / This publication contains guidelines for identifying and managing pests and diseases of Roses.
144

HEALTH STATUS OF THE LOWER EXTREMITIES IN THE ELDERLY.

Durfey, Rita Elizabeth. January 1982 (has links)
No description available.
145

Epidemiology of Fusarium in winter wheat (Triticum aestivum L.)

Jenkinson, Peter January 1994 (has links)
No description available.
146

Molecular detection and genetic manipulation of the Black Queen Cell Virus.

Benjeddou, Mongi January 2002 (has links)
The South African isolate of the Black Queen-Cell Virus (BQCV), a honeybee virus, was previously found to have an 8550 nucleotide genome excluding the poly(A) tail. Its genome contained two ORFs, a 5'-proximal ORF encoding a putative replicase protein and a 3'-proximal ORF encoding a capsid polyprotein.<br /> <br /> A reverse transcriptase PCR (RT -PCR) assay was developed for the detection of BQCV and acute bee-paralysis virus (ABPV). Complete genomes sequences w ere used to design unique PCR primers within a l-kb region from the 3' end of both genomes to amplify a fragment of 70.0 bp from BQCV and 900 bp from ABPV. The combined guanidinium thiocyanate and silica membrane method was used to extract total RNA from samples of healthy and laboratory-infected bee pupae. In a blind test, RT-PCR successfully identified the samples containing BQCV and ABPV. Sensitivities were of the order of 130 genome equivalents of purified BQCV and 1600 genome equivalents of ABPV.
147

Characterization of the fish pathogen Flavobacterium psychrophilum towards diagnostic and vaccine development

Crump, Elizabeth Mary. 10 April 2008 (has links)
No description available.
148

Relational caring in cardiac rehabilitation : how case management service affects clients' recovery and risk factor modification

Rinzema, Sonya Maria Catherine. 10 April 2008 (has links)
No description available.
149

A study of the Septoria and Sclerotinia diseases of the Gladiolus

Stone, Olwen Margaret January 1955 (has links)
No description available.
150

A study of the South African tomato curly stunt virus pathosystem: epidemiology, molecular diversity and resistance

07 November 2012 (has links)
PhD / In South Africa, tomato (Solanum /ycopersicum) is an important vegetable crop with considerable nutritional and economic value. Over the last decade, begomovirus (family Geminiviridae) infections associated with an upsurge of the whitefly vector, Bemisia tabaci, on tomato crops has become a serious threat to sustainable tomato production in South Africa. Begomovirus disease control in tomato is challenging and requires an integrated "pest" and "vector" management strategy, primarily based on the use of chemical and cultural practices aimed at reducing the virus vector as well as the use of resistant cultivars. Development of effective disease management practices for South Africa therefore requires detailed information on the complex vector-virus-host cropping system interactions. The aim of the study presented in this thesis was to investigate the South African whitefly vector/begomovirus/tomato-host pathosystem, with emphasis on the virus and vector diversity and distribution, and the identification of possible resistance sources. A survey of tomato-infecting begomoviruses was conducted during a six-year period (2006-2011 ). Techniques used to determine begomoviruses diversity included whole genome amplification using PCR, RCA (rolling circle amplification), conventional as well as next generation sequencing and development of a RCA-RFLP (restriction fragment length polymorphism) for rapid assessment of diversity. Sequence comparisons and phylogenetic analyses revealed the presence of three new monopartite begomovirus species, in addition to ToCSV, all of which belong to the African/South West Indian Ocean (SWIO) begomovirus clade. Recombination analysis indicated that all four tomato-infecting begomovirus species appear to be complex recombinants and suggests that they have evolved within the sub-Saharan Africa region, along with other African begomoviruses and that they are most likely indigenous to the region. Several weed species were also confirmed as symptomless begomovirus reservoirs, supporting their role in the emerging begomovirus epidemics in South Africa.

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