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Aedes aegypti Thermal Choice Experiment

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The non-native mosquito Aedes aegypti has become a common nuisance in Maricopa county. Associated with human settlement, Ae. aegypti is known to reproduce in standing water sources both indoors and outdoors, within vessels such as tires, flowerpots, and neglected swimming pools (Jansen & Beebe, 2010). Ae. aegypti and the related…

The non-native mosquito Aedes aegypti has become a common nuisance in Maricopa county. Associated with human settlement, Ae. aegypti is known to reproduce in standing water sources both indoors and outdoors, within vessels such as tires, flowerpots, and neglected swimming pools (Jansen & Beebe, 2010). Ae. aegypti and the related Ae. albopictus are the primary vectors of the arboviral diseases chikungunya, Zika, yellow fever and dengue. Ae. aegypti tends to blood feed multiple times per gonotrophic cycle (cycle of feeding and egg laying) which, alongside a preference for human blood and close association with human habitation, contributes to an increased risk of Ae. aegypti borne virus transmission (Scott & Takken, 2012). Between 2010-2017, 153 travel-associated cases of dengue were reported in the whole of Arizona (Rivera et al., 2020); while there have been no documented locally transmitted cases of Aedes borne diseases in Maricopa county, there are no apparent reasons why local transmission can’t occur in the future via local Aedes aegypti mosquitoes infected after feeding from travelling viremic hosts. Incidents of local dengue transmission in New York (Rivera et al., 2020) and Barcelona (European Center for Disease Control [ECDC], 2019) suggest that outbreaks of Aedes borne arbovirus’ can occur in regions more temperate than the current endemic range of Aedes borne diseases. Further, while the fact that Ae. aegypti eggs have a high mortality rate when exposed to cold temperatures limits the ability for Ae aegypti to establish stable breeding populations in temperate climates (Thomas, Obermayr, Fischer, Kreyling, & Beierkuhnlein, 2012), global increases in temperature will expand the possible ranges of Ae aegypti and Aedes borne diseases.
ContributorsHon, Ruiheng (Author) / Paaijmans, Krijn (Thesis director) / Bond, Angela (Committee member) / Angilletta, Michael (Committee member) / School of Molecular Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
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Roof Tube: Developing a Device to Reduce Indoor Temperatures and Improve Air Quality of Corrugated Roofed Homes in Developing Nations

Description

This study documents and explores the process of designing a device to decrease the indoor temperature and particulate matter concentration in the air of corrugated steel homes in sub-Saharan Africa. The device, named the Roof Tube, generates power from a solar panel that goes towards powering a motor that rotates…

This study documents and explores the process of designing a device to decrease the indoor temperature and particulate matter concentration in the air of corrugated steel homes in sub-Saharan Africa. The device, named the Roof Tube, generates power from a solar panel that goes towards powering a motor that rotates blades to output a desired airflow to draw air out from the inside environment. Excess power generated goes towards charging a battery pack during the day that then powers the motor and a light (to improve indoor living quality) during the night when the solar panel cannot collect any more energy. Calculations were done to estimate the ambient indoor temperature of a model home based on the heat transfer from the sun. From this, a rough airflow was determined to offset the temperature difference between the indoor and outdoor environment. A computational fluid dynamics test was performed to determine the effectiveness of the housing design. Results from all tests displayed a low difference between outdoor and indoor temperatures leading to a low prediction of outlet airflow. The designed device prioritized effectiveness, it displaces air at 2700 cfm and charges a 54000mAh battery pack that, when solar energy generation is cut off, can power the motor and light simultaneously for on average 3.02 hours, the motor alone for 8.88 hours, and the light alone for 4.57 hours.
ContributorsHangalay, Ayman (Author) / Paaijmans, Krijn (Thesis director) / Kwon, Beomjin (Committee member) / Bassin Jobe, Ndey (Committee member) / Barrett, The Honors College (Contributor) / Tech Entrepreneurship & Mgmt (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2022-05