4,265 research outputs found
Exploring spatiotemporal variation in host population mobility and vector-borne disease exposure
No full textVector-borne diseases are widespread, diverse and disproportionately affect certain populations. It is well-known that the mobility of host populations is critical to vector-borne disease spread and persistence, and understanding spatiotemporal aspects of this mobility can help predict exposure risk at both fine and large scales. This thesis aims to examine variations in host mobility in the context of vector-borne diseases at opposing ends of the spatiotemporal scale in a ‘three-paper format’. The first paper examines the mobility of a small sample population of humans and livestock in a rural area of western Kenya at a very fine spatiotemporal resolution using surveys and GPS loggers. Several important demographic characteristics are linked to movement patterns, and some seasonal differences in time spent on different types of landcover are observed. Individual variations in movement patterns are likely to be causing differential exposure to some types of vector-borne disease. The second paper further explores the human factors linked to mobility, focusing on the activity-driven movements of the local population in relation to various types of resource access, as well as demographic differences in activity-driven mobility. Both gender and age are found to be linked to activity-driven movements in this small rural population, and women reported spending longer than men accessing health facilities, highlighting how some population subgroups may have differential access to treatments and preventions for vector-borne disease. The final paper is set at the other end of the spatiotemporal scale and quantifies the movement patterns of the population of Mozambique over several months, combining these with country-wide epidemiological data to examine how large-scale differences in mobility may affect exposure to malaria. Human-mediated parasite movements are shown to be highly heterogeneous across Mozambique, and individual movements between rural and urban areas are likely to be driving malaria transmission in some parts of the country. This thesis makes important contributions to our understanding of individual differences in mobility patterns and highlights how both small-scale and large-scale perspectives are valuable for understanding the factors that may increase individual risk of exposure to vector-borne diseases. The work concludes that while mobility underpins much of the dynamics of vector-borne diseases, it is also crucial for understanding differences in the mobility of host populations, as these play an important part in perpetuating transmission and therefore contribute to disease persistence
A Conversation with Jessica B. Harris
No full textA conversation with culinary historian and award-winning author Jessica B. Harris, moderated by Gabrielle Fulton Ponder
Jessica Stremer: Cook Prize 2024, Silver Medal Acceptance Speech
No full textAuthor Jessica Stremer gives an acceptance speech for Great Carrier Reef (Holiday House)https://educate.bankstreet.edu/cook/1013/thumbnail.jp
Jessica Pierce: The Last Walk: Caring for Our Animal Companions
No full textBioethicist and author Jessica Pierce will discuss end-of-life care, dying, and euthanasia in the lives of our companion animals.https://thekeep.eiu.edu/humanitiescenter_authenticity1314/1003/thumbnail.jp
Providence College Faculty Author Series 2014-2015: Dr. Jessica Mulligan
No full textIn this installment of the Faculty Authors Series, Dr. Jessica Mulligan of the Health Policy & Management department discusses her book Unmanageable Care: An Ethnography of Health Care Privatization in Puerto Rico - elucidating the history and contemporary state of the Puerto Rican healthcare system
Providence College Faculty Author Series 2014-2015: Dr. Jessica Mulligan
No full textIn this installment of the Faculty Authors Series, Dr. Jessica Mulligan of the Health Policy & Management department discusses her book Unmanageable Care: An Ethnography of Health Care Privatization in Puerto Rico - elucidating the history and contemporary state of the Puerto Rican healthcare system
Jessica Hagedorn, 19th Annual ODU Literary Festival
No full textJessica Hagedorn Born and raised in the Philippines, Jessica Hagedorn is well-known as a performance artist, poet, and playwright. She is the author of the novel Dogeaters (Penguin), which was nominated for the National Book Award. Hagedorn wrote the screenplay for Fresh Kill, an independent first feature film directed and produced by Shu Lea Cheang and has collaborated on film projects, Color Schemes and Those Fluttering Objects of Desire. Her multimedia theater pieces include Teenytown, The Art of War: Nine situations, and Holy Food. Hagedorn is the recipient of a 1994 Lila Wallace Reader’s Digest Writers Award, and a 1995 NEA Creative Writing Fellowship. Her new novel, The Gangster of Love has been recently released by Houghton Mifflin
Reading: Jessica Bruder
No full textIn this audiovisual recording from Thursday, March 24, 2022, as part of the 53rd Annual UND Writers Conference: “Communities and the Individual,” Jessica Bruder reads excerpts from Nomadland. Bruder discusses what it means to be an immersion journalist and what brought her to write Nomadland. Bruder also responds to audience questions about the dynamic between author and those who share their stories for a novel like Nomadland, the connection between immersive journalism and the new journalism literary movement, the process of collecting, organizing, and transforming material into a novel, how faithful the film version of Nomadland was to the book, and if Linda ever got to build her Earthship.
Introduced by Dr. Lori Robison, Chair of the Department of English
Sequential Derivatization of Polar Organic Compounds in Cloud Water Using O-(2,3,4,5,6-Pentafluorobenzyl)hydroxylamine Hydrochloride, N, O-Bis(trimethylsilyl)trifluoroacetamide, and Gas-Chromatography/Mass Spectrometry Analysis
No full textCloud water samples from Whiteface Mountain, NY were used to develop a combined sampling and gas chromatography-mass spectrometric (GCMS) protocol for evaluating the complex mixture of highly polar organic compounds (HPOC) present in this atmospheric medium. Specific HPOC of interest were mono- and di keto-acids which are thought to originate from photochemical reactions of volatile unsaturated hydrocarbons from biogenic and manmade emissions and be a major fraction of atmospheric carbon. To measure HPOC mixtures and the individual keto-acids in cloud water, samples first must be derivatized for clean elution and measurement, and second, have low overall background of the target species as validated by GCMS analysis of field and laboratory blanks. Here, we discuss a dual derivatization method with PFBHA and BSTFA which targets only organic compounds that contain functional groups reacting with both reagents. The method also reduced potential contamination by minimizing the amount of sample processing from the field through the GCMS analysis steps. Once derivatized only gas chromatographic separation and selected ion monitoring (SIM) are needed to identify and quantify the polar organic compounds of interest. Concentrations of the detected total keto-acids in individual cloud water samples ranged from 27.8 to 329.3 ng mL-1 (ppb). Method detection limits for the individual HPOC ranged from 0.17 to 4.99 ng mL-1 and the quantification limits for the compounds ranged from 0.57 to 16.64 ng mL-1. The keto-acids were compared to the total organic carbon (TOC) results for the cloud water samples with concentrations of 0.607 to 3.350 mg L-1 (ppm). GCMS analysis of all samples and blanks indicated good control of the entire collection and analysis steps. Selected ion monitoring by GCMS of target keto-acids was essential for screening the complex organic carbon mixtures present at low ppb levels in cloud water. It was critical for ensuring high levels of quality assurance and quality control and for the correct identification and quantification of key marker compounds.Corrected proof of accepted manuscrip
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