การจัดการขยะหลังภัยพิบัติน้ำท่วม : บทเรียนจากประเทศญี่ปุ่นต่อการพัฒนานโยบายในประเทศไทย,
2026
Chulalongkorn University
การจัดการขยะหลังภัยพิบัติน้ำท่วม : บทเรียนจากประเทศญี่ปุ่นต่อการพัฒนานโยบายในประเทศไทย, วิไลลักษณ์ นิยมมณีรัตน์, มงคลชัย อัศวดิษฐเลิศ, กนกพร คุ้มภัย
Thai Environment
การศึกษาการจัดการขยะหลังภัยพิบัติน้ำท่วม โดยวิเคราะห์บทเรียนจากประเทศญี่ปุ่นเพื่อพัฒนานโยบายสำหรับประเทศไทย เนื่องจากประเทศไทยประสบปัญหาน้ำท่วมบ่อยครั้ง ทำให้เกิดขยะจำนวนมหาศาลซึ่งเกินขีดความสามารถของระบบจัดการขยะปกติ การศึกษาได้เปรียบเทียบกรณีศึกษาในประเทศญี่ปุ่นและประเทศไทย พร้อมทั้งเสนอแนวทางการจัดการขยะในแต่ละระยะของภัยพิบัติ รวมถึงข้อเสนอแนะเชิงนโยบายต่อประเทศไทยถึงความจำเป็นของการเตรียมความพร้อมด้านการจัดการขยะหลังภัยพิบัติ เพื่อเสริมสร้างความพร้อมและความยั่งยืนในการจัดการขยะหลังภัยพิบัติในประเทศไทย
Role Of The Osaa Transcription Factor Gene In Development, Secondary Metabolism And Virulence In The Mycotoxigenic Fungus Aspergillus Flavus,
2026
Northern Illinois University
Role Of The Osaa Transcription Factor Gene In Development, Secondary Metabolism And Virulence In The Mycotoxigenic Fungus Aspergillus Flavus, Farzana Ehetasum Hossain
Graduate Research Theses & Dissertations
Aspergillus flavus colonizes oil-seed crops, contaminating them with aflatoxins; highly carcinogenic mycotoxins that cause severe health and economic losses. Genetic studies may reveal new targets for effective control strategies. Here, we characterized a putative WOPR transcription factor gene, osaA, in A. flavus. Our results revealed that osaA regulates conidiation and sclerotial formation. Importantly, deletion of osaA reduces aflatoxin B1 production, while, unexpectedly, transcriptome analysis indicated upregulation of aflatoxin biosynthetic genes, suggesting post-transcriptional or cofactor-mediated regulation. Cyclopiazonic acid production also decreased in the absence of osaA. In addition, the osaA mutant exhibited upregulation of genes in the imizoquin and aspirochlorine clusters. …
From Theory To Ecosystems: Exploring Biodiversity And Ecosystem-Function In Pitcher Plant (Darlingtonia Californica) Microbial Communities,
2026
Humboldt State University
From Theory To Ecosystems: Exploring Biodiversity And Ecosystem-Function In Pitcher Plant (Darlingtonia Californica) Microbial Communities, Gavin Sutter
Cal Poly Humboldt theses and projects
The relationship between biodiversity and ecosystem-function (BEF) has been a central focus of ecological research for the last three decades, yet the role of space in shaping BEF relationships remains relatively unknown. Research has shown that community diversity and composition can strongly influence productivity, nutrient cycling, and decomposition, but much of this work treats communities as spatially isolated, leaving open how dispersal and other spatial processes shape BEF at broader scales. To begin addressing this gap, I used microbial communities inhabiting Darlingtonia californica pitcher plant leaves to evaluate how spatial organization and successional change shape biodiversity and ecosystem-functioning. I quantified …
Investigating The Anti-Apoptotic Properties Of The N-Terminus Of The Chlamydia Trachomatis Effector Tarp,
2026
University of Central Florida
Investigating The Anti-Apoptotic Properties Of The N-Terminus Of The Chlamydia Trachomatis Effector Tarp, Kasey S. Jordan
Graduate Studies Theses and Dissertations 2026
As the most prevalent bacterial STI in the United States and leading cause of infection-related blindness worldwide, the obligate intracellular bacteria, Chlamydia trachomatis (Ct), poses a significant threat to public health. As an obligate intracellular bacteria, invasion of the host cell is a crucial step in Chlamydia’s developmental cycle. To drive invasion, Ct injects prepackaged effectors into the host cell using a T3SS. An early Chlamydial effector, translocated actin recruiting phosphoprotein, or Tarp, interacts with host cell actin to promote invasion, mediated via Tarp’s C-terminal region. Although the function of Tarp’s C-terminus is well defined, the Tarp’s N-terminus …
Combating Antibiotic Resistance With Plasmid-Dependent Phages,
2026
University at Albany, State University of New York
Combating Antibiotic Resistance With Plasmid-Dependent Phages, Rhiannon T. Mariano
Electronic Theses & Dissertations (2024 - present)
The alarming rise of carbapenem-resistant bacteria poses an urgent global health threat, driven in large part by the horizontal spread of carbapenemase-encoding plasmids (Ma et al., 2023). These plasmids are often highly mobile and transmissible, enabling rapid dissemination of resistance genes across diverse bacterial populations. Their mobility is largely mediated by conjugation, a process dependent on the formation of pili, which serve as physical bridges for plasmid transfer between cells (Murray et al. 2022; San Millan and MacLean 2017; Virolle et al. 2020). Beyond their role in gene exchange, these pili also act as entry points for a unique class …
Interactions Of Complement With Paramyxovirus Persistently Infected Cells,
2026
University of Central Florida
Interactions Of Complement With Paramyxovirus Persistently Infected Cells, Nasser N. Yousef
Graduate Studies Theses and Dissertations 2026
Persistent RNA virus infections (PI) are often characterized by extended viral shedding and maintained cycles of inflammation. We have an incomplete understanding of interactions between exogenous and cell intrinsic Complement (C') factors and paramyxovirus PI cells. Parainfluenza virus 5 (PIV5) acute infected (AI) cells can be recognized and lysed by exogenous C’ factors, but PI cells become resistant to C’-mediated lysis. We hypothesized that the relative sensitivity of AI and PI cells to C’ lysis is correlated with viral glycoprotein expression on the surface of cells. PI cells display lower levels of viral glycoprotein expression compared to AI cells. Pharmacological …
Viral And Host Cell Determinants Of Resistance To Complement-Mediated Killing During Parainfluenza Virus Type 5 Infection,
2026
University Central of Florida
Viral And Host Cell Determinants Of Resistance To Complement-Mediated Killing During Parainfluenza Virus Type 5 Infection, Jenna R. Aquino
Graduate Studies Theses and Dissertations 2026
RNA viruses are a major global public health concern due to high mutation rates, zoonotic potential, and immune evasion. Parainfluenza virus 5 (PIV5) can establish persistent infections (PIs) despite encountering innate immune responses, including the complement (C′) system. RNA virus replication produces defective interfering particles (DIPs) containing truncated defective viral genomes (DVGs) that depend on standard (STD) virus for replication. DVGs are increasingly detected in natural infections and modulate type I interferon (IFN-I), but their role in the C′ system is unclear. We investigated how DVGs affect C′-mediated lysis during PIV5 infection using real-time in vitro cell viability assays. C′ …
The Importance Of The Proline Residue In The Ldiapa Motif Of Cholera Toxin,
2026
University of Central Florida
The Importance Of The Proline Residue In The Ldiapa Motif Of Cholera Toxin, Akash Bharathan
Honors Undergraduate Theses
Cholera is currently on its seventh global pandemic, disproportionately affecting developing countries. Vibrio cholerae, the bacterial etiologic agent, is able to cause infection by adhering to intestinal epithelial cells and secreting cholera toxin (CT), an AB-type exotoxin that dysregulates signaling pathways. Previous research by the Teter lab has shown that Hsp90, a host cytosolic chaperone, is required for CT to enter the cytosol where it produces toxic effects. Hsp90 binds to CT at two specific motifs, RPPDEI and LDIAPA. The prolines in the RPPDEI motif are essential for binding, but the proline in the LDIAPA has yet to be …
A Tale Of Two Microbialities: Stromatolites And Microbially Induced Sedimentary Structures,
2026
Old Dominion University
A Tale Of Two Microbialities: Stromatolites And Microbially Induced Sedimentary Structures, Nora Noffke, Stanley M. Awramik
OES Faculty Publications
Microbialites are biosedimentary structures built by microbial mats. Five microbialite groups are distinguished: stromatolites, thrombolites, dendrolites, leiloites and microbially induced sedimentary structures (MISS). This contribution discusses the two most abundant microbialite groups in marine settings, stromatolites and MISS. Microbial interactions with clastic sediment are very similar in both stromatolite and MISS formation. However, in stromatolites, syngenetic carbonate production caused by photoautotrophic and heterotrophic metabolisms and by calcimicrobes also takes place. More so, carbonate may precipitate within the extracellular polymeric substances. Due to the various carbonate forming processes as well as recrystallisation, the microscopic mat fabrics within stromatolite laminae are rarely …
The Effect Of The Affordable Care Act Medicaid Expansion On The Risk Of Hospital Closure And Adolescent Hpv Immunization In Rural Counties,
2026
Scripps College
The Effect Of The Affordable Care Act Medicaid Expansion On The Risk Of Hospital Closure And Adolescent Hpv Immunization In Rural Counties, Juliette Des Rosiers
Scripps Senior Theses
From 2005 to 2025, over 200 rural hospitals shut their doors, often citing increased operational costs, staffing shortages, low patient volume, regulatory barriers, financial challenges exacerbated by the COVID-19 pandemic, and uncompensated care as common contributors to the closures. Rural patients are often referred by their primary care physician to a hospital for regular immunizations, since smaller clinics have less capacity to provide immunizations due to a shortage of pediatricians and limited vaccine stock. A crucial vaccine that is not required by schools and underutilized in rural areas is that against human papillomavirus (HPV), a virus that infects cutaneous and …
The Influence Of Localized Water Quality On Eastern Oysters (Crassostrea Virginica) And Their Internal Microbiome Under Changing Environmental Conditions,
2026
Georgia Southern University
The Influence Of Localized Water Quality On Eastern Oysters (Crassostrea Virginica) And Their Internal Microbiome Under Changing Environmental Conditions, Jessie Rivera Lafreniere
College of Graduate Studies: Theses & Dissertations
Oysters are found ubiquitously in estuaries along the Georgia coast, where marsh morphology and large daily tidal fluctuations create dynamic and stressful conditions to which oysters may be locally adapted. Based on water quality data from the Sapelo Island National Estuarine Research Reserve, it is evident that changing climatic conditions are rapidly causing shifts in water quality that may be adversely affecting oyster health, especially as ocean acidification alters the carbonate buffering capacity, increasing the amplitude of daily pH variations. Importantly, the rate of change of conditions are not uniform within estuaries, varying on spatial and temporal scales. The symbiotic …
Effects Of Volatile Organic Compounds Produced By Temperature-Adapted Microbes On Duckweed Growth,
2026
University of New Hampshire, Durham
Effects Of Volatile Organic Compounds Produced By Temperature-Adapted Microbes On Duckweed Growth, Phaedra Yael Stemp
Honors Theses and Capstones
As host-associated microbes adapt to their abiotic environment, these adaptations can affect their host species as well. Previous research showed that varying temperatures and volatile organic compound (VOC) production can affect microbial benefits to hosts. This experiment analyzed how 27 microbes pre-adapted to different temperature conditions affected growth of their host, common duckweed plants, comparing effects of direct contact with microbes, effects of microbe VOCs alone, or both. Each microbe was pre-adapted to one of three temperature regimes: “Northern” at 28 °C, “Southern” at 33 °C, and “Extreme” at 36 °C. We then grew duckweeds in I-plates with each microbe …
Population Genomics And Evolution Of Pseudomonas Aeruginosa,
2026
University at Albany, State University of New York
Population Genomics And Evolution Of Pseudomonas Aeruginosa, Samara T. Choudhury
Electronic Theses & Dissertations (2024 - present)
Pseudomonas aeruginosa is a Gram-negative bacterium ubiquitous in diverse environments and an opportunistic pathogen in humans. It is a leading cause of chronic lung infections in cystic fibrosis patients and of hospital-acquired pneumonia and sepsis. With a large flexible genome and abundant mobile genetic elements, P. aeruginosa exhibits high levels of antimicrobial resistance (AMR), making it a significant public health threat. Evolutionary processes such as homologous recombination, and horizontal gene transfer generate extensive genomic diversity in this species and facilitate the spread of resistance genes. In this dissertation, I investigate the genetic and evolutionary factors shaping P. aeruginosa population structure …
Interaction Of The Gram-Positive Human Pathogen Staphylococcus Aureus With Host Lipids,
2026
Illinois State University
Interaction Of The Gram-Positive Human Pathogen Staphylococcus Aureus With Host Lipids, Sharanya Paul
Theses and Dissertations
Staphylococcus aureus is a prominent pathogen that is known to incorporate straight-chain unsaturated fatty acids (SCUFAs) into its lipids in addition to the normally biosynthesized branched-chain fatty acids (BCFAs) and straight-chain fatty acids (SCFAs). Furthermore, it has recently been shown that the incorporation of oleic acid into S. aureus lipids significantly enhanced the growth of the organism at low temperatures due to the greater fluidity imparted to the membrane. Together with others in the Wilkinson and Dahl laboratory, I have shown that low-temperature growth is enhanced by various SCUFAs, including the human antimicrobial fatty acids sapienic acid, linoleic acid, and …
Quantifying Amendment Impact On Microbial Respiration Rate,
2026
University of Central Florida
Quantifying Amendment Impact On Microbial Respiration Rate, Qwynn Starrwalker
Honors Undergraduate Theses
Wetlands play a critical role in the global carbon cycle by acting as carbon sinks, where the flooded anaerobic conditions cause slow microbial respiration compared to other soils. Comparatively more carbon is stored in the soil as organic matter than is released as carbon dioxide (CO2). Making wetland pools of soil organic matter less available to microbes for respiration could reduce overall atmospheric CO2 and slow global warming. This study examined the effect of kaolinite, goethite, and lime on microbial respiration rates in wetland soils under alternating hydrologic conditions. Homogenized soil from a cypress dome was separated …
Bacterial Community Function In Pitcher Plant Leaves As An Experimental And Mathematical Model Of Functional Dynamics,
2026
Humboldt State University
Bacterial Community Function In Pitcher Plant Leaves As An Experimental And Mathematical Model Of Functional Dynamics, Amelia Jackson
Cal Poly Humboldt theses and projects
This work looks at two different sites with differing abiotic factors in measures of altitude, temperature and precipitation. The site with higher altitude, larger temperature range, and lower precipitation, located in Plumas National Forest (Quincy, CA), had a flat BEF trend that suggests functional redundancy The site with lower altitude, more moderate temperatures, and higher precipitation located in Six Rivers National Forest (Gasquet, CA), also had a flat BEF trend. These abiotic factors could correlate to the significantly different bacterial compositions between sites. The second portion of this work is modeling the host antagonist relationship between Eyxra moths and their …
Development Of Shigella Flexneri Detection Method By Real-Time Polymerase Chain Reaction Targeting The Sfmd Gene,
2025
Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Jakarta, Jakarta 13220, Indonesia
Development Of Shigella Flexneri Detection Method By Real-Time Polymerase Chain Reaction Targeting The Sfmd Gene, Muktiningsih Nurjayadi, Puan Aqila Azizah, Agus Setiawan, Ananda Indah Putri Sihombing, Anisa Fitriyanti, Grace Grace, Gusti Angieta Putri, Helzi Angelina, Royna Rahma Musie, Jefferson Lynford Declan, Gladys Indira Putri, Dandy Akbar Juliansyah, Siti Fatimah, Tiara Fahriza, Irma Ratna Kartika, Fera Kurniadewi, Novitasari Novitasari, Bassam Abomoelak, Hesham Ali El Enshasy, Shyi-Tien Chen
Makara Journal of Science
Shigella flexneri can cause shigellosis, which results in high fever, vomiting, diarrhea, or death. This study developed a detection method based on real-time polymerase chain reaction that targets the sfmD gene of S. flexneri given that the virulence factor encoded by this gene is thought to facilitate adhesion to a host surface. The proposed method involves primer design, DNA isolation, the optimization of primer annealing temperature, and confirmation, specificity, and sensitivity tests. A sfmD primer with an amplicon length of 155 bp was annealed to the target DNA at an optimized temperature of 60 ℃ (range 54 °C–62 °C). This …
Seroprevalence And Risk Determinants Of Toxoplasma Gondii Infection In Pregnant Women In Pakistan: A Cross-Sectional Study,
2025
Department of Basic and Applied Zoology, Shaheed Benazir Bhutto University, Sheringal Pakistan
Seroprevalence And Risk Determinants Of Toxoplasma Gondii Infection In Pregnant Women In Pakistan: A Cross-Sectional Study, Tajul Haram, Kamran Khan
Journal of Bioresource Management
Toxoplasma gondii is a globally important zoonotic parasite, and maternal infection during pregnancy may cause miscarriage, congenital anomalies, or severe neonatal complications. This cross-sectional study was conducted among 367 pregnant women attending hospitals in District Dir Upper, Khyber Pakhtunkhwa, Pakistan, to evaluate the seroprevalence of T. gondii and associated risk factors. Blood samples were analyzed using Immunochromatographic Test (ICT) for initial screening, and positive cases were confirmed by Enzyme-Linked Immunosorbent Assay (ELISA). Overall, 34.6 % (127/367) of women tested positive. While no significant differences were observed across age groups, gestational trimesters, or abortion history, higher prevalence was noted in women …
Straw Cover Increases Garden Soil Microbial Biodiversity,
2025
Purdue University, West Lafayette
Straw Cover Increases Garden Soil Microbial Biodiversity, Emory Walker, Mara Welty, Emma Creviston
The Journal of Purdue Undergraduate Research
No abstract provided.
A Comparison Of White-Light And Monochromatic Led Sources For Antimicrobial Photodynamic Inactivation Of Staphylococcus Aureus,
2025
Purdue University
A Comparison Of White-Light And Monochromatic Led Sources For Antimicrobial Photodynamic Inactivation Of Staphylococcus Aureus, Emily Simmons
The Journal of Purdue Undergraduate Research
Drug-resistant bacteria are an ongoing public health crisis for which alternative treatments are needed. One alternative is antimicrobial photodynamic inactivation (aPDI), which uses potent photosensitizers and light irradiation to damage the bacteria. Our standard light source used in aPDI is a single-wavelength light source at 405-nm; however, we evaluated a white-light source for similarities in the resulting aPDI activities. This is done by comparing aPDI experiments using S. aureus and its methicillin-resistant strains (MRSA) conducted with either the white LED light source or the 405-nm LED light source. Statistical analysis using t-tests revealed no significant differences in the aPDI activities …
