Digital Commons Network^™

Lead(Iv) Oxide In Drinking Water Systems: Formation, Dissolution, Redox-Driven Recrystallization, And Implications For Lead Control, Weiyi Pan

McKelvey School of Engineering Graduate Student Theses & Dissertations

Lead (Pb) in tap water is mainly contributed by lead service lines (LSLs). The dissolved lead concentration is controlled by the solubilities of lead corrosion products that form on the inner surface of LSLs. Among these lead corrosion products, lead(IV) oxide (PbO2) has the lowest solubility and can maintain a low lead level when free chlorine is present. Current strategies to control the lead concentration include replacing the LSL, optimizing the water chemistry conditions, and using point-of-use (POU) filters. The present study investigated the effect of manganese (Mn) on the oxidation of the lead(II) carbonate solids by free chlorine, the …

Synthesis And Consolidation Of Metal Oxide Nanocrystals Via Nonthermal Plasma, Austin Cendejas

McKelvey School of Engineering Graduate Student Theses & Dissertations

Nonthermal plasmas offer a unique nonequilibrium environment that has been leveraged in a wide variety of applications in the fields of material processing, lighting, and waste management to name a few. In all of these cases, the plasma serves as a source of high energy electrons, ions, reactive gas species, and radicals that interact in several ways with surfaces brought into contact with the plasma. Specifically, nonthermal plasmas have been shown to be very successful in achieving continuous, high-throughput, monodisperse nanocrystals of a wide variety of materials. The crystallinity of nanoparticles synthesized in nonthermal plasmas can be attributed to the …

The Vulnerability Of A Poor Urban Neighborhood To Extreme Weather Disasters And The Role Of Ecosocial Work: The Case Of Tongja-Dong Jjokbang-Chon In Seoul, South Korea, Joonmo Kang

Brown School Graduate Student Theses and Dissertations

his study is an inquiry into the vulnerability of poor older adults living in the Tongja-dong jjokbang-chon, one of the last remaining informal settlements in Seoul, South Korea, to climate change-related disasters, particularly heat waves and cold waves; climate change’s impact on their livelihoods; and the role of social work in responding to these challenges. Even though the harsh living conditions and the sufferings of those living in jjokbang-chon residents during extreme weather is constantly highlighted in the media, there is a dearth of empirical research focusing on the vulnerabilities of marginalized communities living in jjokbang-chon to extreme weather and …

Advanced Nanomaterials And Module Designs For Efficient Photothermal Water Treatment, Deoukchen Ghim

McKelvey School of Engineering Graduate Student Theses & Dissertations

Water scarcity is one of the most serious challenges that human beings face, and the demand for clean water will continuously increase as populations grow. Creating potable water from saline water is an important way to meet global freshwater demands. However, current desalination techniques require high energy consumption and a large scale to be efficient, restricting their utilization in remote and underdeveloped areas. These constraints motivate the development of sustainable water treatment methods that can be used with less energy input, in small modular configurations, and in off-grid water treatment systems. As an abundant and renewable energy source, sunlight has …

Measuring G Protein Activation With Spectrally Resolved Fluorescence Fluctuation Spectroscopy, Daniel Foust

McKelvey School of Engineering Graduate Student Theses & Dissertations

Fluorescence fluctuation spectroscopy (FFS) is comprised of a set of statistical techniques used to learn information about fluorescence particles by analyzing intensity fluctuations in signals detected from a fluorescence spectrometer or microscope. In biological contexts, FFS is commonly used to quantify the concentrations, molecular brightnesses, and transport properties (e.g. diffusion coefficients) of labeled biomolecules. In particular, the molecular brightness parameter is valuable because it can be used to quantify oligomerization of biomolecules. Therefore, FFS has emerged as an attractive tool for measuring protein-protein interactions in live cells. This dissertation describes the development of image-based, multicolor FFS techniques. Image-based FFS is …

The Cost Of Child Support: Policy Design And Father Identity, Lara Markovitz

Brown School Graduate Student Theses and Dissertations

Child support policy is one of the key forces in the lives of families in the U.S., where 1 in 4 children and half of African American children live apart from their fathers (Carlson et al., 2017; Grall, 2020; U.S. Census Bureau, 2014). Most unmarried fathers of newborns express a strong desire and commitment to their children (Carlson & McLanahan, 2002; England & Edin, 2007). However, by the time their children turn five, fathers'; involvement (caregiving and time, provision of child support) diminishes greatly (Turner & Waller, 2017). This decrease in father involvement among low-income NRFs is thought to be …

Butte Priority Soils Operable Unit (Bpsou) Final Insufficiently Reclaimed Sites - Field Sampling Plan (Fsp) Bres No. 133 – Dexter Mill, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

"I Need More Knowledge": Qualitative Analysis Of Oncology Providers' Experiences With Sexual And Gender Minority Patients, Christina L Tamargo, Edith P Mitchell, Lynne Wagner, Melissa A Simon, Ruth C Carlos, Bruce J Giantonio, Matthew B Schabath, Gwendolyn P Quinn

Department of Medical Oncology Faculty Papers

Background: While societal acceptance for sexual and gender minority (SGM) individuals is increasing, this group continues to face barriers to quality healthcare. Little is known about clinicians' experiences with SGM patients in the oncology setting. To address this, a mixed method survey was administered to members of the ECOG-ACRIN Cancer Research Group.

Materials and methods: We report results from the open-ended portion of the survey. Four questions asked clinicians to describe experiences with SGM patients, reservations in caring for them, suggestions for improvement in SGM cancer care, and additional comments. Data were analyzed using content analysis and the constant comparison …

Polarization Angle Dependence Of Vertically Propagating Radio-Frequency Signals In South Polar Ice, Davez Bensson, Ilya Kravchenko, Krishna Nivedita

Department of Physics and Astronomy: Faculty Publications

To better understand the effect of ice properties on the science reach of radio experiments designed to measure ultrahigh energy neutrinos (UHEN), we recently considered the timing and amplitude characteristics of radio-frequency (RF) signals propagating along multi-kilometer, primarily horizontal trajectories through cold Polar ice at the South Pole. That analysis indicated satisfactory agreement with a model of ice birefringence based on ice crystal (ĉ-axis) data culled from the South Pole Ice Core Experiment (SPICE). Here we explore the geometrically complementary case of signals propagating along primarily vertical trajectories, using extant data from the Askaryan Radio Array (ARA) experiment, …

Enhanced Algorithmic Job Matching Based On A Comprehensive Candidate Profile Using Nlp And Machine Learning, Vishnu S. Pendyala, Nishtha Atrey, Tina Aggarwal, Saumya Goyal

Faculty Research, Scholarly, and Creative Activity

We propose to aid the hiring process by automatic profiling of a candidate’s social media presence and using it in conjunction with their resume and other information to suggest an employability score and an emotional intelligence indicator. Algorithmic hiring usually supports the hiring company and does not factor in social media presence of the candidate. The work we propose in this paper can also be used by the job seekers to evaluate their chances and uses a comprehensive profile of the candidate. Our approach uses social media profiling using APIs and web crawlers, evaluating soft skills, shortlisting candidates based on …

Computer Mediated Communication Technologies (Cmct) And Librarian’S Interactions With Users For Effective Service Delivery In Delta State University Library, Emmanuel Okwu Phd, Diseiye Oyighan Cln

Library Philosophy and Practice (e-journal)

Abstract

The study examined Computer Mediated Communication Technologies (CMCT) and Librarian’s Interaction with Users for Effective Service Delivery in Delta State University Library. The purpose was to identify the relationship between CMCT and librarian’s interaction with users for effective service delivery. The study adopted a descriptive survey design. The population of the study comprised the total of 56 staff working in the university library (library assistant, library officers and librarians). Census sampling was used to sample the entire population because of its manageable size. Questionnaire served as the primary instrument. Out of 56 copies of questionnaire administered 46 copies valid …

Relationship Between Death Anxiety And Using Social Media Among Chronic Disease Patients In The Time Of Covid 19 In Erbil City The Capital Of Iraqi Kurdistan Region, Vian H. Rasul, Nihayet A. Sheck, Dler M. Saeed, Hashm H. Abdullah, Abdulwahid A. Xalil

Polytechnic Journal

The dangers of the fear of death have become a large part and an important aura of life in the human experience and this anxiety is more understandable for the persons who affected by chronic disorders. Death anxiety and the influence of social and electronic media on it, during COVID – 19 exposure was studied in some other countries, but it don’t studied in our country well. A descriptive correlational study was conducted at primary health care centers / chronic disease units in Erbil city. Data were collected from12th December 2020 to 10th June 2021. A random sample consists of …

Formulasi Pembawa Rizobakteri Penambat Nitrogen Dan Pelarut Fosfat, Serta Aplikasinya Di Pembibitan Kelapa Sawit Yang Diberi Komposisi Dan Dosis Amelioran Yang Berbeda, Roby Ibnu Syarifain, Mohammad Raihan Rashaun, Eka Dewi Anggrainy, Tualar Simarmata

Jurnal Kultivasi

Keberhasilan aplikasi pupuk hayati berkaitan dengan viabilitas mikroba dalam pembawa, dan aplikasinya di lapangan. Penelitian ini bertujuan mengetahui viabilitas Bakteri Penambat Nitrogen (BPN) dan Bakteri Pelarut Fosfat (BPF) pada berbagai komposisi karier, konsentrasi molase, dan aplikasinya dengan berbagai dosis serta komposisi amelioran pada pembibitan kelapa sawit. Penelitian dilaksanakan dari bulan Oktober 2019 - Mei 2020 di laboratorium dan kebun percobaan Ciparanje. Tahap pertama menggunakan Rancangan Acak Lengkap dua faktor (komposisi karier dan konsentrasi molase) dengan tiga ulangan. Tahap kedua menggunakan rancangan acak kelompok faktorial dua faktor (komposisi amelioran dan dosis aplikasi) pada pembibitan kelapa sawit sebanyak tiga ulangan. Hasil riset …

Exploring The Meaningful Qualities Of Transactions In Virtual Environments For Massively Multiplayer Online Role-Playing Gamers, Karen Mccarthy, Shasta Rice, Amanda Flores, John Miklos, Alex Nold

Occupational Therapy | Faculty Scholarship

To date, most research on massively multiplayer online role-playing games (MMORPGs) has focused on the effects playing MMORPGs have on players’ health and wellness. The virtual environment of MMORPGs has yet to be explored as a space where meaningful occupations occur. This qualitative descriptive study examined the virtual environment using a transactional perspective to describe the qualities of gaming to which MMORPG players ascribe meaning. Participants included six MMORPG players with experience playing World of Warcraft, Runescape, or Guild Wars 2. Data were gathered using interviews, participant observation, and a focus group, and analyzed using thematic analysis. Three themes were …

Covad Survey 2 Long-Term Outcomes: Unmet Need And Protocol, Zoha Zahid Fazal, Parikshit Sen, Mrudula Joshi, Naveen Ravichandran, James B. Lilleker, Vishwesh Agarwal, Sinan Kardes, Minchul Kim, Jessica Day, Ashima Makol

Medical College Documents

Vaccine hesitancy is considered a major barrier to achieving herd immunity against COVID-19. While multiple alternative and synergistic approaches including heterologous vaccination, booster doses, and antiviral drugs have been developed, equitable vaccine uptake remains the foremost strategy to manage pandemic. Although none of the currently approved vaccines are live-attenuated, several reports of disease flares, waning protection, and acute-onset syndromes have emerged as short-term adverse events after vaccination. Hence, scientific literature falls short when discussing potential long-term effects in vulnerable cohorts. The COVAD-2 survey follows on from the baseline COVAD-1 survey with the aim to collect patient-reported data on the long-term …

Pengaruh Dosis Pupuk Organik Dan Zat Pengatur Tumbuh Dari Ekstrak Jagung Terhadap Koefisien Sidik Lintas Karakter Komponen Hasil Bawang Merah Varietas Bima, Asrijal, Ambo Upe

Jurnal Kultivasi

Produksi dan produktivitas bawang merah dapat ditingkatkan melalui pemberian pupuk organik dan zat pengatur tumbuh dari ekstrak jagung. Penelitian bertujuan untuk mendapatkan karakter yang efektif dalam meningkatkan hasil umbi bawang merah per hektar. Metode percobaan menggunakan Rancangan Petak Petak Terpisah (RPPT). dengan perlakuan dua jenis ekstrak (jagung manis dan jagung putih) sebagai Petak Utama, tiga jenis dosis pupuk organik sebagai Anak Petak, dan empat jenis konsentrasi zat pengatur tumbuh dari ekstrak jagung sebagai Anak Anak Petak. Hasil penelitian menunjukkan bahwa diameter umbi dan hasil umbi per rumpun merupakan dua karakter yang berpengaruh positif sangat nyata terhadap hasil umbi bawang merah …

Effect Of Paclobutrazol On Growth And Root Morphology Of 12 Crossed Stevia In Vitro, Suseno Amien, Qurrota Aini, Noladhi Wicaksana

Jurnal Kultivasi

Stevia (Stevia rebaudiana Bertoni) is a low-calorie alternative sweetener. The superior varieties of Stevia in Indonesia are limited. Availability of seeds plays an important role in the Stevia plant breeding program for both the selection stage and the production of high-yielding varieties. Tissue culture is the best method of Stevia propagation, but the low adaptability of plantlets causes death in the acclimatization phase. The growth and root morphology of 12 crossbreed Stevia were evaluated. A Completely Randomized Design was used with factorial consisting of two factors were Stevia genotypes (STG1,7,8,10, SBG3,4,5,7,10, SGB2,3, and SBT11) and the plant growth regulator (PGR) …

Green Intellectual Capital And Green Supply Chain Performance: Does Big Data Analytics Capabilities Matter?, Ayman Wael Al-Khatib, Ahmed Shuhaiber

All Works

In light of global environmental concerns growing, environmental awareness within firms has become more important than before, and many scholars and researchers have argued the importance of environmental management in promoting sustainable organizational performance, especially in the context of supply chains. Thus, the current study aimed at identifying the impact of the components of green intellectual capital (green human capital, green structural capital, green relational capital) on green supply chain performance in the manufacturing sector in Jordan, as well as identifying the moderating role of big data analytics capabilities. To achieve this aim, we developed a conceptual model of Structural …

Evaluation Of Antibacterial And Antifungal Activity Of Pistacia Atlantica Subsp. Kurdica Oil Gum Extract From Halabja Province/ Kurdistan Region Of Iraq, Hassan H. Hama Amin, Peshawa Y. Aziz, Shokhan H. Azeez

Polytechnic Journal

The Pistica atlantica subsp. kurdica, or Ghazwan in Kurdish, which is widely distributed in Kurdistan region, Northern Iraq, is a native plant of this region and the major source of a Kurdish gum. This study investigates the antibacterial and antifungal effect of essential oil extracted from the gum. The gum was collected in June-July 2019 from the region of Halabja, a city in the north of Iraq. Essential oil was extracted by using hydro distillation method; the antibacterial activity was evaluated by agar well diffusion test and the inhibition zone (in mm) was determined against six selected bacterial strains which …

Experience Is The Best Teacher: Exploring Clinical Supervisors’ Experiences Who Receive Exclusively Administrative Supervision From Non-Licensed/Non-Clinically Trained Superiors, Monica Pattillo

Electronic Theses and Dissertations

The goals of clinical supervision are to ensure that the supervisee is using skills appropriately and properly handling a client caseload, all while being mentored by an experienced professional, known as a clinical supervisor. However, little is known about the support clinical supervisors receive in their roles. If the support is inadequate, there is a potential to impact the welfare of the clients. Additionally, there are very few researchers that have looked at clinical supervisors’ experiences when receiving their own supervision. In order to add to the body of literature on clinical supervision, this study explored clinical supervisors’ experiences when …

The Purple Heart And Suicidal Behaviors In Post-9/11 U.S. Army Combat Veterans With A Traumatic Brain Injury: A Mixed Methods Study, Jayna Moceri-Brooks

Electronic Theses and Dissertations

Military suicide rates remain high, despite years of targeted efforts to prevent suicide. Specifically, Army Combat Veterans who sustained a traumatic brain injury (TBI) while deployed in support of the Global War on Terrorism are at the highest risk for suicide. This dissertation highlights possible causes for suicidal behaviors within this unique group and provides specific military suicide prevention recommendations. The dissertation is organized into three publishable manuscripts: The first manuscript (Chapter 1) is a mixed-methods dissertation research proposal written according to the National Institute of Health proposal guidelines. The second manuscript (Chapter 2) is an integrative review of the …

Teacher Perception Of A Brief Mindfulness-Based Curriculum And Its Impact On The Development Of Social Skills And Self-Regulation On A Preschool Classroom, Allison Poggendorf

Educational Specialist, 2020-current

Recent studies on mindfulness and its impact on children have found promising results, especially with social-emotional skill development. A majority of the research on mindfulness applied in educational setting tends to focus on elementary and high school students, and there is limited, but growing research that examines the impact of mindfulness among early childhood students. This current study explored the impact of a brief mindfulness-based curriculum on an intact preschool classroom. Specifically, this study examined if preschool teachers perceive mindfulness practices in the classroom to impact their students’ self-regulation skills and social skills and how likely they were to continue …

Improving Measurements And Self-Management Skills Of Cardiovascular Disease By Incorporating A Healthy Lifestyle In Hispanic Adults: A Promotoras Led Program, Kelly Llewellyn

Doctor of Nursing Practice (DNP) Manuscripts

Hispanic community members face unique challenges related to language barriers, culture, access to care, and trust in healthcare providers. Hispanic community members have a higher incidence of cardiovascular diseases and diabetes than their non-Hispanic counterparts. Hispanic males were most likely to die of cardiovascular disease in 2017 (CDC, n.d.a), and for females, death from cardiovascular disease was only second to cancer (CDC, n.d.b.). Hispanics are 70% more likely to be diagnosed with diabetes than non-Hispanics (Office of Minority Health, nd.) Promotoras are trusted members of the Hispanic community who can assist healthcare providers in providing disease prevention education and self-management …

Exploring Cultural Values, Beliefs, And Perceptions Of Human Papillomavirus Vaccine Acceptance In African American Men, Rashida Henderson

Electronic Theses and Dissertations

Introduction: African American (AA) /Black men have a higher rate of anal and rectal HPV-associated cancer, which the HPV vaccine can prevent. Purpose: This study aimed to understand the cultural values, perceptions, and beliefs of the HPV vaccine in African American/Black Men. Method: Through a focused ethnography, a semi-structured guide was utilized to interview 24 AA men. Inclusion criteria included identifying as AA/Black, aged 18-30 years, born and living in the United States, identify and born as male, and able to understand, read, and write English. Results: Through Leininger’s Four Phases of Analysis, three themes emerged: 1) lack of knowledge …

Weathering The Storm: Navigating Urban Ecologies Of Communication In Times Of Crisis, Austin Hestdalen

Electronic Theses and Dissertations

This project explores cities as urban ecologies of communication in which crises emerge and are given significance within the dialogic relations cultivated among public actors attempting to make a living, together, within the shared historical-cultural contexts of everyday life. To describe cities as urban ecologies of communication is to describe them in terms of urban communication and its interdisciplinary foundations in the study of rhetoric, philosophy, planning, policy, architecture, sociology, geography, and media. The first chapter introduces the challenges of urban risk and crisis management within the complex ecologies of communication constituted by cities and reviews how ‘risk’ and ‘crisis’ …

Novel Signal Sequences And Fusion Partners For Paratransgenesis In Asaia, Christina Grogan

Electronic Theses and Dissertations

Mosquitoes transmit many pathogens that cause human disease. One such disease, malaria, is caused by parasites in the genus Plasmodium, infecting over 200 million people and killing over 600,000 per year. Current strategies to control vector-transmitted diseases are increasingly undermined by mosquito and pathogen resistance. Research has turned to additional and novel methods of control, such as altering the microbiota of the vectors. In this method, called paratransgenesis, symbiotic bacteria are genetically modified to affect the mosquito’s phenotype by engineering them to deliver antiplasmodial molecules into the midgut to kill parasites. These molecules must be released by the …

The Effects Of Digital Game-Based Instruction On Knowledge Acquisition And Retention Of Genetics Content, Brinley Kantorski

Electronic Theses and Dissertations

Digital educational games have been a part of the educational landscape since the early 1970s. Since then, there has been a proliferation in the quantity, format, type, and quality of digital educational games available to classroom teachers. Despite this, the body of literature surrounding the effectiveness of these digital educational games remains highly fragmented and lacks unifying themes. While some literature exists to support the use of digital educational games in immediate knowledge acquisition, little research has been done on how digital educational games impact the retention of knowledge in the long term. As such, this study examines how the …

Identification And Characterization Of Genetic Elements That Regulate A C-Di-Gmp Mediated Multicellular Trait In Pseudomonas Fluorescens, Collin Kessler

Electronic Theses and Dissertations

Microbial communities contain densely packed cells where competition for space and resources are fierce. These communities are generally referred to as biofilms and provide advantages to individual cells against immunological and antimicrobial intervention, dehydration, and predation. High intracellular pools of cyclic diguanylate monophosphate (c-di-GMP) cause cells to aggregate during biofilm formation through the production of diverse extracellular polymers. Genes that encode c-di-GMP catalytic enzymes are commonly mutated during chronic infections where opportunists display enhanced resistance to phagocytosis and antibiotics. Our lab uses an emergent multicellular trait in the model organism Pseudomonas fluorescens Pf0-1 to study the emergence of c-di-GMP mutations …

“I Hear You”: Exploring The Lived Experience Of Counselors’ Empathic Response To Clients When Conducting Telephonic Counseling During Covid-19, Michael Sickels

Electronic Theses and Dissertations

Dissertation supervised by Dr. Debra Hyatt-Burkhart

This study sought to unearth the lived experience of counselors empathically responding to clients via telephonic counseling during COVID-19. The term empathic response refers to as attending to the emotional and mental state of another person in a way that is attuned with the feelings and meanings of the individual’s experience. There are few studies that have assessed the merits of telephonic counseling, and even fewer that have examined counselors’ empathic response to clients through this medium.

To uncover the lived experience of the target population, the participants of the study were purposefully selected …

Knowledge Sharing Practices Within Academic Libraries In Nigeria: A Case Study Of Nigerian Defense Academy (Nda) Library, Abdulwasiu Ahmad Ismail, Tukur Abduljabbar, Aondover Sixtus Andoors, Aliyu Mohammed Mahmud, Safiya Garba Mohammed

Library Philosophy and Practice (e-journal)

The paper investigates the ‘Knowledge sharing practices within academic libraries with specific reference to the Nigerian Defence Academy library. It has been observed that knowledge sharing in academic libraries is very paramount to the survival of the library. there are limitations in KS practices at the Nigerian Defence Academy library. The objectives of the study are; to investigate what the current knowledge sharing tools and practices are in library’, to identify to what extent the staff at the NDA library utilizes knowledge sharing tools, to identify the strengths and limitations in knowledge sharing practices etc. The research questions are; Does …