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 26 for “"fungal spores"”.
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Physical and biochemical properties of entomopathogenic fungal spores
… commercial insect control agents, and their spores are the key to any mycoinsecticide or biological control strategy. Pie purpose of this study was to characterize and compare the surface properties of spores produced by hyphomycete EPF and investigate how these attributes relate to spore …
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Quantification of Airborne Fungal Spores Comparing Molecular Tracers via Ion Chromatography and UV-LIF Methods
<p>Fungal spores represent an understudied subcategory of bioaerosols that can impact human health as pathogenic and allergenic particles. Fungal spores also have been shown to act as effective ice nuclei and giant cloud condensation nuclei in some cases. This has implications on the hydrological …
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A prospective cohort study on ambient air pollution, airborne pollen (and fungal spores) and respiratory morbidities including childhood asthma in adolescents from the Western Cape Province
… exposures to ambient air pollutants as well as fungal spores on asthma-associated outcomes. This study systematically investigated these factors among schoolchildren residing in informal settlements in the Western Cape province of South Africa. Methods: A cohort study of grade-4 schoolchildren …
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Acute Pulmonary Response in Landscape Workers: Job Redesign
… agents of respiratory spasms are endotoxin, fungal spores, and fungal mycotoxin. This study focused on the respiratory hazards in the landscaping industry. During the month of March, landscapers worked heavily with wood mulch, which contains many organic materials that potentially harbor the …
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The Decay of Aerosol Concentration as a Function of Time Comparing the Effects of AHPCO and Bi-Polar and an Analysis of Aeroallergens, Fungal Spores and Pollen in the Texas Panhandle Area
… medication, insect venom and also mold spores and pollen; causing an allergy, a sensitivity to these substances that are normally harmless to people (Ghosh et al., 2017). In this study I analyzed the two most common types of aeroallergens, fungal spore and pollen. The analysis was done …
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Modification by sex and atopy of the effect of chemical air pollutions and biological air pollutants including pollen and fungal spores on children respiratory health in the Western Cape, Cape South Africa
… a land-use regression model, while pollen and fungal spores were measured using spore traps positioned in each study area during the follow-up study between May 2016 and September 2016. Asthma-related outcomes were obtained using the International Study of Allergy and Asthma in children (ISAAC) …
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Identification and Characterization of LYSMD3, A Novel Epithelial Cell Pattern Recognition Receptor for Chitin
… been fully defined. Chitin, a major component of fungal cell walls, has been associated with allergic disorders such as asthma. However, chitin recognition by mammals remains enigmatic at best. The principal receptor(s) on epithelial cells for chitin recognition remain to be determined. In this …
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The pollen and spores of metropolitan Cape Town and their relationship with meteorological conditions
… in general, is the dominant atmospheric fungal spore. Fungal spores are, quantitatively, the dominant partner in the atmosphere. Meteorological factors such as wind speed and wind direction, precipitation, temperature, relative humidity, atmospheric pressure and atmospheric stability have …
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Modelling atmospheric dispersal of fungal pathogens on continental scales to safeguard global wheat production
… wheat fields, vast amounts of pathogenic fungal spores are produced that can be carried away by wind. For targeted disease surveillance and control it is important to estimate when, where and how many fungal spores are dispersed from infected to susceptible wheat fields. In this study, …
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Fungi associated with the pistillate flowers of white oak (Quercus alba L.) and their effect on pollen germination
… and <u>Fusarium</u>. The effect of fungal spores on pollen germination was investigated. Suspensions of pollen grains and fungi spores were cultured in Van Tieghem cells. Pollen germination <u>in vitro</u> was significantly enhanced by <u>Cladosporium</u> and <u>Epicoccum</u>, but …
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Tropicalizing the Portable Radio
… Second World War, the U.S. military found that fungal growth put its portable radio equipment out of use at an alarmingly fast rate in the tropics. This paper follows radio engineers and biologists as they made sense of “‘tropical deterioration” and devised techniques of “tropicalization” to …
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Mathematical modeling of infectious diseases
… in humans. In the host (Daphnia)- parasite (fungal spores) system, we study the disease dynamics of Daphnia in a water column where both algae and spores sink and diffuse. We formulated the Daphnia-spores-algae model using advection-diffusion partial differential equations (PDEs). We studied …
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An Examination of Puccinia Mariae-Wilsoni Infection of Claytonia Virginica
… may be responsible for dispersal by transferring fungal spermatia or spores among neighboring plants. I experimentally tested four possible vectors of spore transfer by excluding wind, ants specifically, insects in general, and residual fungal spores in the soil. Higher concentrations of …
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Influence of entomopathogenic fungi from forest and urban habitats on founding pairs of reticulitermes flavipes (rhinotermitidae)
… defenses, large termite colonies survive fungal invasions. This research focused on founding pairs of primary reproductives when colonies are smallest and there are only two termites. Because most termite colonies invading newer homes in Missouri are started by Reticulitermes flavipes …
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Aureobasidium Microstictum (Bubak) Cooke, The Casual Agent of Leaf Streak of Daylily (Hemerocallis L.), and Its Involvement in Spring Sickness of Daylily
… to the size of conidia, and shape of fungal structures including, hyphae, conidiophores, and conidia of eight isolates of A. microstictum and one isolate of C. hemerocalli were compared. C. hemerocalligenerally had the same morphological features as A. microstictum. In addition, the …
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Ecology and climates of early Middle Pleistocene interglacials in Britain
… combination of Coleoptera, pollen, coprophilous fungal spores, microcharcoal and sedimentology is used to reconstruct local ecological attributes for each site. Multivariate analyses of these datasets indicate the importance of disturbance processes (herbivore activity, wildfire, hydrogeomorphic …
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Control of Fungal Morphology in Continuous Culture
… of a system for the continuous production of fungal spores by the control of mycelial morphology and the optimisation of environmental factors stimulating sporulation. Spores, considered a dormant stage in the life cycle of fungi, have been shown to contain enzymes unrelated to those required …
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Consequences and Limits of Cell-Cell Communication in Airway Immune Responses
… can protect our bodies from viruses, bacteria, fungal spores, and environmental toxins. Conversely, when the immune system fails to respond or responds inappropriately in the airways, it can lead to diseases from deadly pneumonia to chronic allergies. Cell-cell communication is an important …
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Bioaerosol Dispersal Across Scales: Regional Patterns, Field Study, and Model Evaluation
Bioaerosols--including seeds, pollen, fungal spores, bacteria, and viruses--are fundamental agents connecting atmospheric processes to agriculture, ecosystem function, and human and animal health. This dissertation uses Lagrangian stochastic (LS) models to simulate how these particles travel and …
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