Digital Commons Network^™

Use Of Nanoparticle Additives To Achieve Desirable Properties In Fluorine-Free Firefighting Foams, Annelise Kathleen Curtin

USF Tampa Graduate Theses and Dissertations

Class B Firefighting foams play a crucial role in protecting equipment and people fromliquid fuel fires but concerns regarding the impacts of per- and poly-fluoroalkyl substances (PFAS) have resulted in bans on the use of aqueous film forming foam (AFFF). Fluorine-free replacements are yet to achieve the same level of performance. Nanoparticles including silica and clay have been used to improve foam stability, especially in environments where hydrocarbon fuels are present. These materials have also been used in solid composites to improve fire resistance. The stability of aqueous foams containing silica and Laponite RD nanoparticles along with surfactants of different …

Senggani Fruit (Melastoma Malabathricum Linn.) Extract As A Natural Indicator In Ph-Responsive Pva-Taro Starch Plastic Packaging, Rika Risma Dewi, Intan Syahbanu, Winda Rahmalia

Turkish Journal of Chemistry

Polyvinyl alcohol (PVA)-starch-based bioplastics are widely used in many applications. pH-responsive plastic packaging was produced through the incorporation of senggani (Melastoma malabathricum Linn.) fruit extract into PVA-taro starch-based plastic packaging. The objective of this research was to examine the characteristics of senggani fruit extract under different pH conditions and explore its application as a pH indicator in intelligent packaging. The senggani fruit was extracted through the maceration method using a solvent comprising 96% ethanol and 3% citric acid, with a ratio of 85:15 (v/v). The senggani fruit extract solution underwent color changes, appearing pink at pH levels below 6, pale …

Rapid Synthesis Of Azoindolizine Derivatives Via Aryldiazonium Salts, Ferruh Lafzi̇

Turkish Journal of Chemistry

A practical, rapid, and efficient method for the synthesis of azoindolizine derivatives via aryldiazonium salts with excellent yields was reported. Firstly, the corresponding aniline derivatives were synthesized via a simple and rapid method. Then, the optimal reaction conditions were investigated using a variety of protic and aprotic solvents that demonstrating the robustness of the approach. Finally, the applicability of this method to various sources of indolizine and phenyldiazonium tetrafluoroborate salts was expanded.

Antiviral And Cytotoxic Activities And Chemical Profiles Of Two Species Of Abies Nordmanniana From Türkiye, Nazli Sarikahya, Gaye Sümer Okkali, Furkan Ozan Çöven, Sevda Zeinali̇, Gülce Gucur, Ayşe Di̇la Çağlar, Ece Uyar, Ahmet Ceyhan Gören, Ayşe Nalbantsoy

Turkish Journal of Chemistry

Abies is an important genus of the family Pinaceae, with about 50 species found in the highlands of Asia, Europe, North Africa, and North and Central America. The principal aim of the present work was to investigate the chemical content and biological potential of the resin and cone from Abies nordmanniana subsp. bornmulleriana and Abies nordmanniana subsp. equi-trojani, respectively. The flavonoid and phenolic contents of the resin and cones were evaluated using liquid chromatography-high resolution mass spectrometry (LC-HRMS). Additionally, the essential oil and fatty acid compositions were analyzed using gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ionization detector (GC-FID).. Cytotoxicity …

Effect Of Quince Seed Gum (Qsg) On The Performance Of Injectable Hyaluronic Acid Hydrogels In Terms Of The Rheological, Morphological, And Mechanical Aspect, Serdar Kolay, Ni̇lhan Kayaman Apohan, Erdi̇nç Babuç, Gökay Gün

Turkish Journal of Chemistry

Injectable hydrogels play an important role in tissue engineering as a filling and repairing material. This study aimed to develop a new injectable hydrogel based on hyaluronic acid (HA) and quince seed gum (QSG) and investigate the effect of QSG on hydrogel performance. The amount of unreacted 1,4-Butanediol diglycidyl ether (BDDE) is maintained at an undetectable level for HA-QSG hydrogels. Amino acid analysis showed that the HA-QSG hydrogel had rich amino acid concentrations of leucine, arginine, and valine. After thermal sterilization, the elastic modulus of HA-QSG gels for dermal and intra-articular filler applications is 63 Pa and 92 Pa respectively. …

Dft Modeling Of Water-Assisted Hydrogen Peroxide Formation From A C(4a)-(Hydro)Peroxyflavin, Yilmaz Özkiliç

Turkish Journal of Chemistry

The cofactor of a class A monooxygenase is reduced at an external location of the enzyme and is subsequently pulled back into the active site after the reduction. This observation brings the question; is there any defense mechanism of the active site of a monooxygenase against the formation of the harmful hydrogen peroxide from the reactive C(4a)-(hydro)peroxide intermediate? In this study, the barrier energies of one to three water molecule-mediated uncoupling reaction mechanisms in water exposed reaction conditions were determined. These were found to be facile barriers. Secondly, uncoupling was modeled in the active site of kynurenine 3-monooxygenase complex which …

Design And Characterization Of Phosphonic Acid-Functionalized Grafted Sepiolite Nanohybrids And Their Adsorption Studies For Removal Of Copper Ions From Aqueous Solution, Mehwish Tahir, Asif Raza, Amara Nasir, Tariq Yasin, Shamila Imtiaz

Turkish Journal of Chemistry

In this study, we synthesized novel, economically efficient phosphonic acid-functionalized grafted sepiolite nanohybrids for selective elimination of copper ions from water. These nanohybrids were prepared by graft polymerization of glycidyl methacrylate onto sepiolite. We utilized free radical graft polymerization to graft glycidyl methacrylate (GMA) onto silanized sepiolite. The nanohybrids obtained exhibited a grafting percentage of 479% at 0.3 g of KPS initiator, 15% GMA monomer, and after 4 h of reaction. In pursuit of selectively removing metal ions from water, the nanohybrid with the highest grafting (PGE3) was chemically treated with phosphoric acid to introduce phosphonic acid groups on it. …

Assessing The Impact Of Storage Conditions On Rna From Human Saliva And Its Application To The Identification Of Mrna Biomarkers For Asthma, Poorna Manasa Bhamidimarri, David Fuentes, Laila Salameh, Bassam Mahboub, Rifat Hamoudi

Faculty, Staff and Student Publications

Introduction: Human saliva was used to develop non-invasive liquid biopsy biomarkers to establish saliva as an alternate to blood and plasma in translational research. The present study focused on understanding the impact of sample storage conditions on the extraction of RNA from saliva and the RNA yield, to be applied in clinical diagnosis. In this study, genes related to asthma were used to test the method developed.

Methods: Salivary RNA was extracted from three subjects using the Qiazol® based method and quantified by both spectrophotometric (NanoDrop) and fluorometric (Qubit®) methods. RNA integrity was measured using a bioanalyzer. Quantitative PCR was …

Current And Future Environmental Suitability For Bats Hosting Potential Zoonotic Pathogens In Rural Kenya, Ruut Uusitalo, Reilly T. Jackson, Tamika J. Lunn, Essi M. Kohonen, Joseph G. Ogala, Paul W. Wabala, Tarja A. Sironen, Kristian M. Forbes

Biological Sciences Faculty Publications and Presentations

Synanthropic bats live in close proximity to humans and domestic animals, creating opportunities for potential pathogen spillover. We explored environmental correlates of occurrence for a widely distributed synanthropic African bat, Mops pumilus—a species associated with potential zoonotic viruses—and estimated current and future environmental suitability in the Taita Hills region and surrounding plains in Taita–Taveta County in southeast Kenya. To project future environmental suitability, we used four Coupled Model Intercomparison Project Phase 6 general circulation models that capture temperature and precipitation changes for East Africa. The models were parameterized with empirical capture data of M. pumilus collected …

A Randomized, Double-Blind, Phase 3 Safety And Efficacy Study Of Ridinilazole Versus Vancomycin For Treatment Of Clostridioides Difficile Infection: Clinical Outcomes With Microbiome And Metabolome Correlates Of Response, Pablo C Okhuysen, Erik R Dubberke, Et Al.

2020-Current year OA Pubs

BACKGROUND: Exposure to antibiotics predisposes to dysbiosis and Clostridioides difficile infection (CDI) that can be severe, recurrent (rCDI), and life-threatening. Nonselective drugs that treat CDI and perpetuate dysbiosis are associated with rCDI, in part due to loss of microbiome-derived secondary bile acid (SBA) production. Ridinilazole is a highly selective drug designed to treat CDI and prevent rCDI.

METHODS: In this phase 3 superiority trial, adults with CDI, confirmed with a stool toxin test, were randomized to receive 10 days of ridinilazole (200 mg twice daily) or vancomycin (125 mg 4 times daily). The primary endpoint was sustained clinical response (SCR), …

Viral And Host Factors Are Associated With Mortality In Hospitalized Patients With Covid-19, Neil R Aggarwal, Jacquie Nordwall, Dominique L Braun, Lucy Chung, Jordan Coslet, Tatyana Der, Nnakelu Eriobu, Adit A Ginde, Awori J Hayanga, Helene Highbarger, Mark Holodniy, Juan P Horcajada, Mamta K Jain, Kami Kim, Sylvain Laverdure, Jens Lundgren, Ven Natarajan, Hien H Nguyen, Sarah L Pett, Andrew Phillips, Garyphallia Poulakou, David A Price, Philip Robinson, Angela J Rogers, Uriel Sandkovsky, Katy Shaw-Saliba, Jeffrey M Sturek, Barbara W Trautner, Michael Waters, Cavan Reilly

Faculty, Staff and Students Publications

BACKGROUND: Persistent mortality in adults hospitalized due to acute COVID-19 justifies pursuit of disease mechanisms and potential therapies. The aim was to evaluate which virus and host response factors were associated with mortality risk among participants in Therapeutics for Inpatients with COVID-19 (TICO/ACTIV-3) trials.

METHODS: A secondary analysis of 2625 adults hospitalized for acute SARS-CoV-2 infection randomized to 1 of 5 antiviral products or matched placebo in 114 centers on 4 continents. Uniform, site-level collection of participant baseline clinical variables was performed. Research laboratories assayed baseline upper respiratory swabs for SARS-CoV-2 viral RNA and plasma for anti-SARS-CoV-2 antibodies, SARS-CoV-2 nucleocapsid …

The Institutional Challenges Of A Quantified Self Study: An Attempt To Ascertain How Data Collected From A Mobile Device Can Be An Indicator Of Personal Mental Health Over Time, Julian Lazaras

University Honors Theses

The adoption of an application of new technology always comes with a bias, this is never more true for the case of human behavioral analytics within higher education. While movements such as the quantified self movement make strides to reinterpret the realm of data analytics, psychology, and computer science, there are inevitably limitations to the adoption and application of such approaches within the standard realm of research. Herein is presented a case where an effort to evaluate the prospect of use of mobile phone data as secondary indicators of personal mental health through the lens of data analysis was put …

Scanless Two-Photon Voltage Imaging, Ruth R Sims, Imane Bendifallah, Christiane Grimm, Aysha S Mohamed Lafirdeen, Soledad Domínguez, Chung Yuen Chan, Xiaoyu Lu, Benoît C Forget, François St-Pierre, Eirini Papagiakoumou, Valentina Emiliani

Faculty, Staff and Students Publications

Two-photon voltage imaging has long been heralded as a transformative approach capable of answering many long-standing questions in modern neuroscience. However, exploiting its full potential requires the development of novel imaging approaches well suited to the photophysical properties of genetically encoded voltage indicators. We demonstrate that parallel excitation approaches developed for scanless two-photon photostimulation enable high-SNR two-photon voltage imaging. We use whole-cell patch-clamp electrophysiology to perform a thorough characterization of scanless two-photon voltage imaging using three parallel illumination approaches and lasers with different repetition rates and wavelengths. We demonstrate voltage recordings of high-frequency spike trains and sub-threshold depolarizations from neurons …

Cardiac Magnetic Resonance In The Assessment Of The Anomalous Right Coronary Artery Originating From The Left Sinus Of Valsalva, Alberto Cipriani, Mauro Lo Rito, Silvia Pica, Monica De Gaspari, Ilaria Rigato, Martina Perazzolo Marra, Giorgio De Conti, Simone Corradin, Raffaella Motta, Valeria Pergola, Francesco Secchi, Massimo Lombardi, Barbara Bauce, Alessandro Zorzi, Gaetano Thiene, Cristina Basso, Silvana Molossi, Massimo Antonio Padalino, Domenico Corrado

Faculty, Staff and Students Publications

No abstract provided.

A Phase 2 Clinical Trial To Evaluate The Safety, Reactogenicity, And Immunogenicity Of Different Prime-Boost Vaccination Schedules Of 2013 And 2017 A(H7n9) Inactivated Influenza Virus Vaccines Administered With And Without As03 Adjuvant In Healthy Us Adults, Christina A Rostad, Robert L Atmar, Emmanuel B Walter, Sharon Frey, Jeffery L Meier, Amy C Sherman, Lilin Lai, Rachel Tsong, Carol M Kao, Vanessa Raabe, Hana M El Sahly, Wendy A Keitel, Jennifer A Whitaker, Michael J Smith, Kenneth E Schmader, Geeta K Swamy, Getahun Abate, Patricia Winokur, Wendy Buchanan, Kaitlyn Cross, Ashley Wegel, Yongxian Xu, Inci Yildirim, Satoshi Kamidani, Nadine Rouphael, Paul C Roberts, Mark J Mulligan, Evan J Anderson

Center for Medical Ethics and Health Policy Staff Publications

Introduction: A surge of human influenza A(H7N9) cases began in 2016 in China from an antigenically distinct lineage. Data are needed about the safety and immunogenicity of 2013 and 2017 A(H7N9) inactivated influenza vaccines (IIVs) and the effects of AS03 adjuvant, prime-boost interval, and priming effects of 2013 and 2017 A(H7N9) IIVs.

Methods: Healthy adults (n = 180), ages 19-50 years, were enrolled into this partially blinded, randomized, multicenter phase 2 clinical trial. Participants were randomly assigned to 1 of 6 vaccination groups evaluating homologous versus heterologous prime-boost strategies with 2 different boost intervals (21 vs 120 days) and 2 …

Heterogeneous Resources In Infrastructures Of The Edge Network Paradigm: A Comprehensive Review, Qusay S. Alsaffar, Leila Ben Ayed

Karbala International Journal of Modern Science

The late 1990s saw the rise of the edge computing network paradigm, as well as an increase in the number of IoT de-vices. This concept is viewed as a link between cloud servers and end-devices, bringing processing and storage re-sources closer to clients. As a result of its low latency and high performance, researchers and developers have expressed interest in it. However, this paradigm confronts a number of obstacles and restrictions, including restricted and hetero-geneous resources at network edges. In this paper, we provide a detailed review of heterogeneous resources in edge network infrastructures using a three-dimensional method. These three …

Epic Modernisms, Hamid Farahmandian

James Joyce Literary Supplement

.

Chronos Volume 5 Issue 1 - Full Issue

Chronos

No abstract provided.

Mash: Advances In Treatment And Triage During The Korean War, Ryan Planer

Chronos

No abstract provided.

Anorexia Mirabilis: A Secular Seduction, Nicholas A. Ross

Chronos

No abstract provided.

Akong Uma, Akong Ugma: Experiences Of Local Farmers In Valencia City, Bukidnon Integrating Organic Farming Practices, Aleli A. Abonete, Stephanie Gail M. Alcontin, Princess Althea Jhanne C. Ancheta, Jessa Athena Q. Cabada, Johaima O. Hadji Manaf

DLSU Senior High School Research Congress

Organic farming uses biological fertilizer inputs and lessens the reliance on chemicals compared to conventional farming. This improves ecosystem services and impacts water quality, soil health, and biodiversity. This study aimed to determine the experiences of local farmers in Valencia City, Bukidnon, who are integrating organic farming. Specifically, the study focuses on organic farming practices, challenges, and consequences. In addition, the researchers utilized snowball sampling. The sample population of this research is composed of five (5) organic farmers from Valencia City, Bukidnon. The researchers conducted a semi-structured one-to-one interview with the participants. Moreover, the researchers developed five (5) themes after …

May Pagkain Sa Basura?: A Descriptive Study On The Motivation And Health-Risk Awareness Of Pagpag (Upcycled Food) Consumers In Barangay 105 Aroma And Happyland, Tondo, City Of Manila And Barangay Payatas-B, City Of Quezon, Jernevieve Jolie S. Alonzo, Jhon Jasper Y. Ambat, Joaquin Phillippe P. Beleno, Almira Charise V. Carian, Zhyrina Angela R. Eneria, Errin Shyril C. Mena, Athena Jhane C. Santiago

DLSU Senior High School Research Congress

This study explored the motivations behind purchasing and consuming pagpag, an upcycled food consumed in response to poverty in the Philippines and evaluated the level of health-risk awareness among pagpag consumers. This study conducted a quantitative non-experimental descriptive research approach, in which the survey included 387 respondents from Barangay Payatas-B in the City of Quezon and Barangay 105 Aroma and Happyland in Tondo, City of Manila, with 129 individuals sampled from each location through cluster sampling. The study’s findings revealed that most of the respondents purchased pagpag because of its portion size compared to eateries, However, it was also highlighted …

The Influence Of Chronotypes In Baseball Athlete Performance: An Ex Post Facto Study, Ace Hector A. Nañawa, Louie Gilbert G. Satera, Hector Troy M. Cantoria, Mark Ion Q. Gokan, Leah D. Madrazo

DLSU Senior High School Research Congress

Chronotypes, or the individual differences in circadian preferences, are known to influence various aspects of human functioning. In the realm of sports, understanding how these preferences may affect performance is crucial for optimizing training regimens and game strategies. This ex post facto study investigated the impact of chronotypes on athletes' performance. A cohort of baseball athletes (n=11) was assessed for their sleep-wake preferences using the Morningness-Eveningness Questionnaire (MEQ). The MEQ consists of a series of questions about sleep habits, peak alertness periods, and the preferred times for waking up and going to bed. Performance logs and baseball game evaluations for …

Exploring Cultural, Health, And Technology Intersections: A Focus On Migrant Experiences, Merna Mina, Sahij Gill

Bridges: An Undergraduate Journal of Contemporary Connections

Despite the plethora of theories and frameworks addressing culture, health, and technology adoption, there remains a notable absence of a unifying theory that comprehensively encompasses all three aspects, particularly concerning newcomers. The Health Belief Model, for example, underscores individual perceptions and attitudes toward health yet fails to consider the intricate interplay between cultural factors and technology adoption among immigrant populations. The Healthy Immigrant Effect, which posits that immigrants often exhibit better health outcomes than native-born individuals, does not mention the role of technology on health outcomes. Acculturation theories, while shedding light on the adaptation process, often fall short of explaining …

Thyrobot: A Chatbot For Tracking The Effects Of Levothyroxine On The Physical Health Of Filipino Women With Hypothyroidism, Georgette Kate P. Bayna, Eunice Miel P. Santos

DLSU Senior High School Research Congress

Levothyroxine remains the most commonly prescribed medication for hypothyroidism; however, there may be side effects on the patient's health. While these side effects are unavoidable, technological developments can be utilized to aid patients in mitigating them. This study aims to determine Levothyroxine's effects on Filipino women's physical health and how technology, specifically a chatbot, can assist in symptom tracking. The study evaluates the usability and effectiveness of ThyroBot, a chatbot that tracks and journals the symptoms of Levothyroxine in Filipino women with hypothyroidism, provides medication intake reminders, and offers a summary of logs. ThyroBot was created via Chatfuel. To evaluate …

How Wireless Fidelity (Wi-Fi) Affect Fertilized Mallard Duck (Anas Platyrhynchos) Eggs: A Descriptive Study, Joe Benedict S. Lahoylahoy, Angel Ann P. Castillon, Maybelle F. Gamayon

DLSU Senior High School Research Congress

This research investigated how wireless fidelity or Wi-Fi radiation affects the development of fertilized duck embryos, locally known as balut, during incubation. Given the prevalence of Wi-Fi usage, understanding how it may affect living things, in this case, mallard ducks, becomes increasingly relevant. A total of 36 eggs were allocated into two groups, with each group inside a student-made incubator: 18 were placed in a Wi-Fi-free environment while 18 were placed in close proximity with a Wi-Fi router for 18 days. Each day during the conduct of the study, one egg from each group was observed documenting the embryos' physical …

Check Out!: The Relationship Between Impulsive Buying, Body Image Dissatisfaction, And Self-Esteem Of Dlsu-Shs Manila Students, Kerstin Rev C. Bayani, Myca Angelica M. Manalangsang, Amber Maxine S. Pe, Chelsea V. Tan

DLSU Senior High School Research Congress

The prevalence of impulsive buying tendencies is slowly manifesting itself in today’s consumer-driven society. When paired with psychological factors such as body image dissatisfaction and self-esteem, an increase in an individual’s impulsive buying tendency was observed in numerous studies. Thus, this research paper aims to provide an overview of the relationships between impulsive buying, body image dissatisfaction, and self-esteem of DLSU-SHS Manila students AY 2023-2024. Using a quantitative research approach, the primary data was collected through survey questionnaires distributed to a sample size of 99 students. The collected data was then analyzed using the Chi-Square Test of Independence and the …

Determining School And Home Environment Factors Associated With Academic Productivity Among Senior High School Students In A Blendflex Set-Up, James Aldrill M. Balubayan, Andrei Carl C. Dungo, Martina V. Sioson, Ben Aaron B. Yadao

DLSU Senior High School Research Congress

Academic productivity is correlated with various factors surrounding the student, particularly in the workspace environment. However, the environment in some respective homes of students is not upheld to a certain standard and is underutilized as a factor for academic success. As a result, this lack of attention from the students, educators, and parents could disrupt the productivity of students, which would eventually impact students' academic achievement. Therefore, the primary objective of this study is to determine the various environmental factors that impact the academic productivity among Senior High School students under a BlendFlex set-up. The researchers then utilized a quantitative …

Antimycotic Potential Of Eleusine Indica (Paragis) Leaf Extract Against Candida Albicans And Trichosporon Spp., Allijah Isabel D. Reyes, Lei Eirah M. Reforzado, Matthew Lewis B. Mariano, Lheichelle Anne F. Balagot

DLSU Senior High School Research Congress

Candida albicans and Trichosporon are fungal species that cause candidiasis and trichosporonosis, which are common fungal infections in the Philippines. Due to its growing resistance to antifungal drugs, studies that explore herbal plant alternatives have arisen. The present study was conducted to evaluate the antimycotic activity of Eleusine indica (Paragis) plant crude extract against C. albicans and Trichosporon spp.. E. indica is an invasive plant native to the Philippines that has been proven to possess bioactive compounds such as flavonoids, alkaloids, steroids, essential oils, coumarins, fatty acids, anthraquinone, yield from the inhibitory extraction method, along with factors such as the …

Stitching Stories: Exploring The Lived Experiences Of Young Male Embroiderers In Lumban, Laguna, Andrea Gabrielle T. Arce, Xinnia Faye F. Elipse, Nicolle Ann S. Ponteres

DLSU Senior High School Research Congress

Culture plays an essential role in shaping society, reflecting the essence of a nation and its people. Embroidery, deeply ingrained in Filipino culture, extends beyond mere craftsmanship; it is a way of life and the identity of Lumban, known as the “Embroidery Capital of the Philippines.” While existing literature often focuses on female embroiderers, this study explores the experiences of young male embroiderers aged 18 to 30 in Lumban, providing insights into their motivations, challenges, and socio-emotional benefits from their connection with this traditional craft. Employing semi-structured interviews, the research has gathered data from seven participants in Lumban, Laguna. Their …