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Articles 74761 - 74790 of 1826825
Full-Text Articles in Entire DC Network
Going Gray Too Early? Effects Of Color On Facial Identification, Roman M. Pardo
Going Gray Too Early? Effects Of Color On Facial Identification, Roman M. Pardo
Masters Theses (Archived)
This study investigated a possible bias in face-matching and ID-screening decision making- color incongruity (i.e., one face image presented in color and one in grayscale). Expanding on previous research, the 2x2 mixed methods experiment incorporated eye tracking measures (i.e., fixations). Participants N= 25 were randomly assigned to compare color or grayscale IDs (between groups comparison) to a 10 s color video of a person moving their head side to side. The task consisted of 2 practice and 48 face-matching trials with medium prevalence (MP, 24 match, 24 mismatch) presented as one of four pseudo-random and counterbalanced orders. Signal detection …
Literature Review Of Reverse Electrodialysis Technoeconomic And Environmental Analysis, Kevin Allen Wear
Literature Review Of Reverse Electrodialysis Technoeconomic And Environmental Analysis, Kevin Allen Wear
Water Resources Science and Technology Theses and Graduate Research Reports (Archived)
This thesis presents a theoretical analysis of Reverse Electrodialysis (RED) for electricity generation using produced water—a high-salinity byproduct from oil and gas extraction. Drawing from over seventy peer-reviewed studies, this research explores the potential of RED as a sustainable energy solution for industrial wastewater streams. Chapter 1 outlines the environmental and economic implications of produced water. Chapter 2 reviews ion transport theories and membrane technologies. Chapter 3 evaluates past implementations of RED and related membrane systems. Chapter 4 delivers a comprehensive synthesis of current literature, modeling RED performance under realworld salinity gradients, ion compositions, and membrane constraints. Chapter 5 discusses …
Perceptions Of Multiple Perpetrator Rape In The Courtroom, Kelly C. Burke, Jonathan M. Golding, Jeffrey Neuschatz, Libbi Geoghagan
Perceptions Of Multiple Perpetrator Rape In The Courtroom, Kelly C. Burke, Jonathan M. Golding, Jeffrey Neuschatz, Libbi Geoghagan
Psychology Faculty Publications
Rape is typically committed as a one-on-one crime. However, a relatively high number of rapes (2–27%) involve a single victim and multiple perpetrators. These cases are often referred to as “gang” rapes but are also termed Multiple Perpetrator Rape (MPR). Despite these data, there is a scarce amount of legal decision-making research on this issue. This study investigated legal decision making in an acquaintance rape case involving multiple perpetrators. This study was a 2(Defendant Number: one vs. three) × 2(Victim Intoxication: intoxicated vs. sober) × 2(Participant Gender: women vs. men) between-participants design. Online community members (N = 171) were randomly …
Student Imaginaries: The Role Of Universities In Addressing The Polycrisis, Susana Maria Ruiz Sors
Student Imaginaries: The Role Of Universities In Addressing The Polycrisis, Susana Maria Ruiz Sors
Theses and Dissertations
This thesis explores graduate student perceptions from the Public Affairs and Security Studies (PASS) program at the University of Texas Rio Grande Valley (UTRGV) regarding the role of universities in addressing interconnected environmental, economic, political, and social challenges, described here as a “polycrisis” (Lawrence et al., 2024). Using a mixed-methods approach, the study surveyed 42 students through Likert-scale questions and open-ended prompts. Results show students view economic inequality, political instability, and threats to democracy as the most pressing societal issues. While environmental issues were seen as important, they ranked lower in urgency. Students expect universities to address these challenges through …
A Modular Paradigm For The Directly Efficient Representation Of Kinetic Laser-Driven Plasmas, Roland D. Hesse
A Modular Paradigm For The Directly Efficient Representation Of Kinetic Laser-Driven Plasmas, Roland D. Hesse
Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–
A natural inefficiency in conventional treatment of the plasma distribution arises from indiscriminate consideration of the contributions to field structure that are dynamically sourced from kinetic activity in disparate sectors of phase space. We introduce a range of techniques for model design to maximize representation efficiency without breaking key physical invariants indicative of physical reliability. An overview of varied adaptation to stable time-advance methods is given. Low-dimensional representation of a laser-driven plasma requires some creativity in differential structural modification, while direct efficiency is uncovered through the compression and rarefaction of a nonuniform momentum grid. These numerical models introduce embedded gains …
Exploring And Characterizing Organic Chemistry Students’ Meaningful Engagement In Science Practices, John Zhou
Exploring And Characterizing Organic Chemistry Students’ Meaningful Engagement In Science Practices, John Zhou
Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–
Undergraduate organic chemistry frequently engages students in key science practices such as analyzing and interpreting spectroscopic data and constructing explanations through reaction mechanisms. However, these activities are often framed as procedural tasks rather than as tools for constructing knowledge. As a result, students may develop incomplete understanding of these practices, making it harder for them to see how scientific knowledge is generated and to use them meaningfully as tools for sensemaking. To better understand how students take up these practices as epistemic tools, three qualitative studies were conducted in this dissertation to investigate how undergraduate organic chemistry students reason with …
A Quantitative Examination Of The Sexual Health Of Aging Black Men In Rural South Africa, Esihle Lupindo
A Quantitative Examination Of The Sexual Health Of Aging Black Men In Rural South Africa, Esihle Lupindo
Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–
This dissertation uses survey data primarily from Wave 1 of the Health and Aging in Africa: Longitudinal Study of In-depth Community in South Africa (HAALSI) which was collected in 2015 to study the sexual health of Black men in rural Mpumalanga, South Africa. Broadly speaking, I examine aging men’s sexual health as it related to HIV, well-being, loneliness, social networks and disclosure. The definition that I use for sexual health was coined by MacPhail and Campbell (2001) who define it as “not only sexual practices but also what people know and believe about sex, particularly what they think is natural, …
Effect Of Tai Chi Practice On The Adaptation To Sensory And Motor Perturbations While Standing In Older Adults, Arion Dey, Huiyeong Chang, Laila Shaaban, Armaan Suga, Genavieve Braden, Andres Bustamante, Jisang Park, Shenhua Zhang, Yang Hu, Manuel E. Hernandez
Effect Of Tai Chi Practice On The Adaptation To Sensory And Motor Perturbations While Standing In Older Adults, Arion Dey, Huiyeong Chang, Laila Shaaban, Armaan Suga, Genavieve Braden, Andres Bustamante, Jisang Park, Shenhua Zhang, Yang Hu, Manuel E. Hernandez
Faculty Research, Scholarly, and Creative Activity
Tai Chi provides an age-appropriate exercise to decrease fall risks in older adults. However, the exact mechanism underlying the benefits of Tai Chi practice remains an open question. Thus, this study examined how aging and Tai Chi practice impact adaptation to sensory and motor perturbations while standing. We hypothesized that older Tai Chi practitioners would exhibit a decreased reliance on visual processes as sensory and motor perturbations increased, relative to naive healthy older adults. Using rambling and trembling decompositions of the center of pressure (COP) and frequency-domain features, we examined changes in low (0–0.3 Hz), medium (0.3–1 Hz), and high …
A Discrete-Time Adaptive Sliding Mode Controller For A Multicopter With A Suspended Payload, John Helzer
A Discrete-Time Adaptive Sliding Mode Controller For A Multicopter With A Suspended Payload, John Helzer
Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research
This thesis presents a Discrete-time Adaptive Sliding Mode Controller (DASMC) for control of a multicopter with a suspended payload. DASMC is designed to stabilize the multicopter at a desired position while minimizing the load oscillations induced by a significant hanging payload. The proposed DASMC minimizes the need for system-specific parameters like tunable gains and improves robustness to both external disturbances and model uncertainties compared with existing controllers. The controller is designed for direct digital implementation on a variety of multicopter platforms with considerations like discrete-time design, adaptive gain shrinking, and saturation handling. When deployed on a real multicopter in an …
Characterization Of The Effects Of Waste Mullite Powder On Seawater Sea Sand Cementitious Materials, Xiao Sun, Zehui Zhou, Wenjie He, Yudong Bi, Yao Wang, Hengrui Liu, Rui Zhong, Hongyan Ma
Characterization Of The Effects Of Waste Mullite Powder On Seawater Sea Sand Cementitious Materials, Xiao Sun, Zehui Zhou, Wenjie He, Yudong Bi, Yao Wang, Hengrui Liu, Rui Zhong, Hongyan Ma
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Maintaining the durability of coastal concrete structures while reducing construction costs remains a formidable challenge. Drawing inspiration from the volcanic concrete used by ancient Greeks and Romans, this study explores the feasibility of using waste mullite powder (WMP) with a high alumina content in seawater sea sand concrete to conserve natural resources and enhance durability. The experimental results demonstrate that the incorporation of seawater and WMP exerts detrimental impacts on the flow characteristics and workability of cementitious composites. While the sulfate content in seawater and sea sand can bolster the early strength of sea sand seawater concrete, sulfate attack compromises …
Geopolymer Clsm With Off-Specification Fly Ash And Bottom Ash: A Sustainable Approach To Hazardous Waste Utilization, Alexis K. Vandomelen, Ahmed A. Gheni, Eslam Gomaa, Mohamed A. Elgawady
Geopolymer Clsm With Off-Specification Fly Ash And Bottom Ash: A Sustainable Approach To Hazardous Waste Utilization, Alexis K. Vandomelen, Ahmed A. Gheni, Eslam Gomaa, Mohamed A. Elgawady
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Conventional controlled low-strength material (CLSM) is a self-consolidating cementitious material with high flowability and low strength, traditionally composed of cement, sand, and water. This study explores the sustainable utilization of off-specification fly ash (OSFA) and bottom ash (BA), classified as industrial by-products with potential environmental hazards, to develop eco-friendly geopolymer CLSM as an alternative to conventional CLSM. Sodium hydroxide (NaOH) was used as an alkali activator to stabilize and solidify both two-part (liquid NaOH) and one-part (solid NaOH pellets) geopolymer CLSM mixtures. These mixtures were evaluated based on flowability (ASTM D6103-17) and compressive strength (< 300 psi per ACI Committee 229 guidelines for excavatability). A cost analysis was also conducted. The results demonstrated that incorporating OSFA as a cement replacement increased water demand by 15% to meet flowability requirements, while BA substitution for sand led to segregation challenges requiring mixture adjustments. For two-part mixtures, higher carbon content in OSFA necessitated an increased water-to-fly ash ratio. All self-consolidating mixtures exhibited 1-day compressive strengths ranging from 5 psi (0.03 MPa) to 87 psi (0.6 MPa). One-part mixtures showed a 1% to 34% reduction in 7-day compressive strength compared to two-part mixtures, improving excavatability. Increasing the BA-to-OSFA ratio from 1:1 to 3:1 reduced water demand due to lower surface area but increased the NaOH/OSFA ratio. This study highlights the potential of geopolymer CLSM to reduce costs by up to 94% at current NaOH prices (USD 6 per cubic yard) while repurposing hazardous industrial by-products, offering a cost-efficient, sustainable, and environmentally responsible solution for CLSM production.
Ftir Characterization Of Asphalt Sara Fractions In Response To Rubber Modification, Mohyeldin Ragab, Eslam Deef-Allah, Magdy Abdelrahman
Ftir Characterization Of Asphalt Sara Fractions In Response To Rubber Modification, Mohyeldin Ragab, Eslam Deef-Allah, Magdy Abdelrahman
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Asphalt–rubber binders (A-RBs) have a long and deep history of use; however, little is known regarding the interrelated chemical behaviors and miscibility of rubber with the asphalt fractions [saturates, aromatics, resins, and asphaltenes (SARA)]. This study comprehensively attempted to address this knowledge deficiency by employing Fourier transform infrared spectroscopy (FTIR) to investigate the chemical evolution of A-RBs. A-RB interacted at 190 °C and 3000 min−1 for 8 h was deemed to have the optimal rheological performance. FTIR of the liquid fractions of A-RB 190–3000 showed a prominent chemical shift in the SARA fractions, with new peaks that showed rubber …
Sepsis: I Can Catch Your Lies – A New Paradigm For Deception Detection, Anku Rani, Dwip Dalal, Shreya Gautam, Pankaj Gupta, Vinija Jain, Aman Chadha, Amitava Das, Amit P. Sheth
Sepsis: I Can Catch Your Lies – A New Paradigm For Deception Detection, Anku Rani, Dwip Dalal, Shreya Gautam, Pankaj Gupta, Vinija Jain, Aman Chadha, Amitava Das, Amit P. Sheth
Publications
Deception is the intentional practice of twisting information. It is a nuanced societal practice deeply intertwined with human societal evolution, characterized by a multitude of facets. This research explores the problem of deception through the lens of psychology, employing a framework that categorizes deception into three forms: lies of omission, lies of commission, and lies of influence. The primary focus of this study is specifically on investigating only lies of omission. We propose a novel framework for deception detection leveraging NLP techniques. We curated an annotated dataset of 876,784 samples by amalgamating a popular large-scale fake news dataset and scraped …
Rehmannia Glutinosa For Perimenopausal Syndrome In Patients With Breast Cancer: A Systematic Review And Meta-Analysis, Dejia Kong, Feixiang Huang, Wenhua Liu, Ma Lin, Zhumei Sheng, Junmiao Xu
Rehmannia Glutinosa For Perimenopausal Syndrome In Patients With Breast Cancer: A Systematic Review And Meta-Analysis, Dejia Kong, Feixiang Huang, Wenhua Liu, Ma Lin, Zhumei Sheng, Junmiao Xu
Saudi Medical Journal
Objectives: To carry out a quantitative assessment of the therapeutic effect of Chinese herbal medicine (CHM), with Rehmannia glutinosa as the main ingredient, in treating perimenopausal syndrome (PMS) in breast cancer patients. Methods: Randomized controlled trials (RCTs) comparing CHM with Rehmannia glutinosa as the principal ingredient and Western medicine in treating PMS among breast cancer patients were retrieved from multiple databases. These databases included PubMed, Cochrane library, Embase, China National Knowledge Infrastructure, Wanfang Data, China Science and Technology Journal Database, and China Biology Medicine Database. The primary outcome was the change in the Kupperman index by the end of the …
The Case For Indexing: Echocardiographic Dimensions In The Arab Gulf, Adil I. Jumani, Shaini C. Mani, Ghada A. Rashwan, Hadiza O. Ibrahim, Jumaa S. Aldhaheri, Safaa M. Almohdar, Khaled M. Alfakih
The Case For Indexing: Echocardiographic Dimensions In The Arab Gulf, Adil I. Jumani, Shaini C. Mani, Ghada A. Rashwan, Hadiza O. Ibrahim, Jumaa S. Aldhaheri, Safaa M. Almohdar, Khaled M. Alfakih
Saudi Medical Journal
Objectives: To evaluate echocardiographic parameters in young Emirati males and compare them to American Society of Echocardiography/European Association of Cardiovascular Imaging reference ranges, highlighting the need for population-specific or indexed normal ranges. Echocardiographic reference ranges for cardiac dimensions are primarily derived from Western populations, which may not be suitable for smaller-bodied populations, such as Asians. Methods: Echocardiography was performed on 60 healthy Emirati males undergoing military recruitment from September to December 2024. Measurements included left ventricular (LV), aortic, and left atrial (LA) dimensions and volumes. Parameters were indexed to body surface area (BSA) and compared to established Western norms. Results: …
Prevalence And Factors Associated With Functional Disability In Daily Activities Among Older Adults In Bisha, Saudi Arabia: A Cross-Sectional Study, Abdullah H. Alhalafi, Ibrahim A. Eljack, Shehab M. Almalki, Ahmed S. Doghish, Osama A. Mohammed, Abdullah F. Alhalafi, Saif M. Alqahtani, Hussain S. Alqahtani, Galaleldien M. Abdalla, Abubakar M. Jibo
Prevalence And Factors Associated With Functional Disability In Daily Activities Among Older Adults In Bisha, Saudi Arabia: A Cross-Sectional Study, Abdullah H. Alhalafi, Ibrahim A. Eljack, Shehab M. Almalki, Ahmed S. Doghish, Osama A. Mohammed, Abdullah F. Alhalafi, Saif M. Alqahtani, Hussain S. Alqahtani, Galaleldien M. Abdalla, Abubakar M. Jibo
Saudi Medical Journal
Objectives: To determine the prevalence of functional disability among older people attending primary healthcare centers in Bisha, Saudi Arabia. Methods: The study used a cross-sectional design and gathered data from older adults (60 years and older) attending primary healthcare centers in Bisha. Data was collected using structured interviews based on the Katz Index of Independence in activities of daily living (ADL). Ordinal logistic regression models identified major ADL limiting variables. Results: A total number of 396 respondents, with 40.7% (n=161) females. The prevalence of functional disability using the Katz ADL Index scale was 54%. Nearly half (45.5%) of the respondents …
Effect Of Radial Extracorporeal Shockwave Therapy Combined With Evidence-Based Physical Therapy For Adhesive Capsulitis Of The Shoulder: A Randomized Controlled Trial, Turki M. Sharahili, Hosam A. Alzahrani
Effect Of Radial Extracorporeal Shockwave Therapy Combined With Evidence-Based Physical Therapy For Adhesive Capsulitis Of The Shoulder: A Randomized Controlled Trial, Turki M. Sharahili, Hosam A. Alzahrani
Saudi Medical Journal
Objectives: To evaluate the effect of radial extracorporeal shockwave therapy (rESWT) combined with evidence-based physical therapy (EBPT) on adhesive capsulitis (AC). Methods: A total of 30 participants with AC were randomly assigned to receive either rESWT combined with EBPT (experimental group) or sham rESWT combined with EBPT (control group) over a 6-week intervention period. The primary outcomes included pain (assessed using the visual analogue scale) and disability (disabilities of the arm, shoulder, and hand questionnaire). The secondary outcomes were shoulder range of motion (ROM), psychological distress (depression anxiety and stress scale-12), and health-related quality of life (HRQoL; short form-12). Assessments …
Public Spaces For Community Campuses And Universities, Marichela Sepe
Public Spaces For Community Campuses And Universities, Marichela Sepe
Books and Monographs
Chapter: Modern Pedestrian Campus Design in North America, 1940s-70s, Eric Mumford, pages 13-22
This volume explores the growing significance of open public spaces within università campuses—spaces that go far beyond their functional role to become essential arenas for social interaction, informal learning, well-being, and urban integration.
Structured around three interconnected themes—Campus and Public Spaces, Campus and University Communities, and Campus and the City—the volume gathers international best practices, offering an insightful tool for students, academics, designers, administrators, and urban thinkers.
Full text also available for download at https://www.inuedizioni.com/en/prodotti/pubblicazione/public-spaces-community-campuses-and-universities
Characterization Of Lactobacilli-Containing Catheter Segments Developed By Using Selective Laser Sintered Mold., Caden Maners
Characterization Of Lactobacilli-Containing Catheter Segments Developed By Using Selective Laser Sintered Mold., Caden Maners
Master of Engineering Theses
Catheter-associated urinary tract infections (CAUTIs) are a major healthcare burden with current prevention strategies offering limited success. This study presents a novel, self-coating biomaterial approach using a silicone-based bioink embedded with thermally sensitive probiotic strains (L. crispatus, L. rhamnosus, and L. reuteri). Catheter segments were fabricated via bio-injection molding using 3D-printed CAD molds. These Lactobacilli, selected for their probiotic and antimicrobial potential, serve as a non- antibiotic strategy to reduce infection risk. These segments were evaluated for mechanical strength (Shore A hardness), thermal stability (TGA/DSC), porosity and bacterial presence (SEM), biofilm formation (crystal-violet assay), as well as mass retention in …
Operationalising The Social Licence To Operate Along The Belt And Road: The Case For A Mediation-Focused Approach, Mark Mclaughlin
Operationalising The Social Licence To Operate Along The Belt And Road: The Case For A Mediation-Focused Approach, Mark Mclaughlin
Research Collection Yong Pung How School Of Law
This article examines the intricate dynamics of community representation and stakeholder influence in the realm of international investment law. More specifically, it considers the most effective method by which to operationalise the concept of the ‘social licence to operate’ when attempting to resolve investor-state disputes. By utilising disputes relating to China’s Belt and Road Initiative as a case study, it is shown that the social impact of foreign investment projects is often a catalyst for arbitration claims. Community interests are insufficiently represented at the stage of procurement or admission of investment, which has led to violent clashes between investors and …
Wild Hogs In The Water: Contested Infrastructural Ecologies Of Reservoir Storage In Texas, Sayd Randle
Wild Hogs In The Water: Contested Infrastructural Ecologies Of Reservoir Storage In Texas, Sayd Randle
Research Collection College of Integrative Studies
Reservoirs are developed to store water in reserve for future use. But once built, reservoir sites inevitably hold more than just water, often serving as a key habitat for a range of species. This paper examines how one such animal has transformed water storage facilities and nearby landscapes into contested ground in urbanising areas of Texas, USA. Living around the reservoirs, feral hogs complicate the process of urbanisation by degrading the stockpiled water and infrastructure at the storage sites themselves and by damaging private property throughout the surrounding landscape. Tracking local efforts to manage the hogs, the case study illustrates …
Political Ecologies Of Storage For The 21st Century, Sayd Randle, Matthew Archer
Political Ecologies Of Storage For The 21st Century, Sayd Randle, Matthew Archer
Research Collection College of Integrative Studies
New resource storage arrangements are proliferating rapidly both in terms of physical infrastructures-for the storage of things like "clean" energy, nuclear waste, carbon dioxide, fresh water, and data-and as part of a set of discursive moves that reinforce a vision of a near future world in which problems of climate change mitigation and adaptation in particular (but also issues like energy security, water security, industry growth, etc.) are solved through eco-modernist techno-fixes. This Symposium sketches the contours of a framework we term political ecologies of storage. In doing so, we treat storage as both a potent imaginary and a concrete …
Sensor Lag Adjustments On A Mobile Meteorological Cart In Tropical Environments: A Case Study From An Urban Park In Singapore, Moshe Eliezer Mandelmilch, Sin Kang Yik, Beatrice H. Ho, Graces N. Y. Ching, Peter J. Crank, Winston T. L. Chow
Sensor Lag Adjustments On A Mobile Meteorological Cart In Tropical Environments: A Case Study From An Urban Park In Singapore, Moshe Eliezer Mandelmilch, Sin Kang Yik, Beatrice H. Ho, Graces N. Y. Ching, Peter J. Crank, Winston T. L. Chow
Research Collection College of Integrative Studies
This study adds to the growing literature on mobile platforms by examining the performance of the Singapore MaRTy (SMaRTy) in conducting mobile micrometeorological measurements along a designated route in an urban park in Singapore, reflecting a pedestrian walking experience. The main objective of the study was to calculate the sensor lag for the mobile climate measurements: Air Temperature (TA), and Relative Humidity (RH) of SMaRTy along a designated route in an urban park in Singapore based on data from fixed stations (HOBO sensors) in two significant synoptic meteorological periods during the Northeast and Southwest monsoons. Statistically significant regression models were …
A New City For A New Era: Xiong'an As Showcase Of China's Evolving Urban Ideology, Andrew Stokols
A New City For A New Era: Xiong'an As Showcase Of China's Evolving Urban Ideology, Andrew Stokols
Research Collection College of Integrative Studies
Cities have long been expressions of political ideology in China and elsewhere. During China’s rapid urbanization over the past few decades, “new areas” became popular strategies to promote urban growth, following the success of Shenzhen, widely regarded as China’s first special economic zone. Today under Xi, Xiong’an New Area has become the latest “new area of national significance.” But unlike previous new areas in China, Xiong’an has become wedded to a distinct vision of the urban in Xi Jinping’s China, one in which the excesses of reform-era urbanization are controlled through new forms of affordable housing and finance, new ecological …
Investigating The Thixotropy Of Fresh Struvite Cement-Based Composite: Insights On Mechanisms Of The Pastes’ Thixotropic Behavior, Ugochukwu Ewuzie, Abdulkareem O. Yusuf, Damilola Daramola, Monday Uchenna Okoronkwo
Investigating The Thixotropy Of Fresh Struvite Cement-Based Composite: Insights On Mechanisms Of The Pastes’ Thixotropic Behavior, Ugochukwu Ewuzie, Abdulkareem O. Yusuf, Damilola Daramola, Monday Uchenna Okoronkwo
Chemical and Biochemical Engineering Faculty Research & Creative Works
Struvite (ST) recovered during wastewater treatment has been sparsely applied in cement-based composites. This study systematically evaluated the thixotropic behavior of cement-struvite (CST) pastes, a mix of 5–20 % ST by mass of cement, and proposed the interaction mechanisms leading to the pastes' thixotropy. The hysteresis loop area was used to establish the pastes' thixotropy and investigate its relationship with increased ST content, temperature, and yield stress. In the thixotropic behavior model used, the equilibrium shear stress was employed to examine the CST pastes' irreversible change; the characteristic time of deflocculation was used to study the flocs destruction process; and …
Gallium-Containing Bioactive Glasses: Their Influence On Ion Release And The Bioactivity Of Resulting Glass Polyalkenoate Cements, Lana Margaret Placek, Danielle Lee Perry, Mark Robert Towler, Anthony William Wren
Gallium-Containing Bioactive Glasses: Their Influence On Ion Release And The Bioactivity Of Resulting Glass Polyalkenoate Cements, Lana Margaret Placek, Danielle Lee Perry, Mark Robert Towler, Anthony William Wren
Chemical and Biochemical Engineering Faculty Research & Creative Works
A series of glasses (0.48SiO2 − [0.40-x]ZnO − 0.12CaO-xGa2O3, x = 0, 0.8, 0.16) was developed to formulate a series of Ga-containing glass polyalkenoate cements (GPCs). The solubility of GPCs was tested using DI water, and it was found that the sample containing the highest mol% of Ga, LGa-2, had the most Ga ion release. The GPCs were incubated in SBF, and SEM/EDS analysis revealed that the at% of P increased, while the at% of Si decreased, highlighting the CaP precipitation on the GPC surface. The at% of Ga also decreased, reinforcing the Ga release from the GPC. Cellular testing …
The Diabetes Prevention Program And Its Outcomes Study: Niddk's Journey Into The Prevention Of Type 2 Diabetes And Its Public Health Impact, Jill P Crandall, Dana Dabelea, William C Knowler, David M Nathan, Marinella Temprosa, Dpp Research Group
The Diabetes Prevention Program And Its Outcomes Study: Niddk's Journey Into The Prevention Of Type 2 Diabetes And Its Public Health Impact, Jill P Crandall, Dana Dabelea, William C Knowler, David M Nathan, Marinella Temprosa, Dpp Research Group
Children’s Nutrition Research Center Staff Publications
The current-day epidemic of type 2 diabetes, largely driven by increased adiposity and reduced physical activity in the setting of genetic susceptibility, is a major public health challenge. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) presciently proposed the Diabetes Prevention Program (DPP), a multicenter randomized clinical trial, designed by investigators in conjunction with NIDDK staff and initiated in 1996. The primary goal of DPP was to determine whether an intensive lifestyle intervention (ILS) or metformin in comparison with placebo would reduce the development of diabetes in a high-risk population with prediabetes. After mean 2.8 years, ILS …
Subclinical Hyperthyroidism Presenting As Urinary Frequency And Polyuria: A Case Report., Hameed H Salah, Elizabeth M Pines
Subclinical Hyperthyroidism Presenting As Urinary Frequency And Polyuria: A Case Report., Hameed H Salah, Elizabeth M Pines
Ambulatory and Primary Care Articles
Hyperthyroidism may present with a variety of symptoms including urinary frequency. This report discusses a case of subclinical hyperthyroidism presenting as generalized weakness, urinary frequency, polyuria, and intermittent diarrhea. However, this elderly patient had a complex past medical history including multinodular nontoxic thyroid goiter with tracheal deviation and multiple recent admissions for aspiration pneumonia, making the diagnosis of subclinical hyperthyroidism less obvious. The patient was managed with intravenous fluids and discharged on propranolol with recommendations to follow-up with endocrinology. This case demonstrates the importance of keeping hyperthyroidism on the differential for urinary frequency and polyuria without other clear etiologies.
Assessment Of Spatial Autocorrelation And Scalability In Fine-Scale Wildfire Random Forest Prediction Models, Madeleine Pascolini-Campbell, Joshua B. Fisher, Kerry Cawse-Nicholson, Christine M. Lee, Natasha Stavros
Assessment Of Spatial Autocorrelation And Scalability In Fine-Scale Wildfire Random Forest Prediction Models, Madeleine Pascolini-Campbell, Joshua B. Fisher, Kerry Cawse-Nicholson, Christine M. Lee, Natasha Stavros
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Wildfire prediction models that can be applied across diverse regions at fine scales (< 100 m) are critical for wildfire management. Remote sensing offers a path forward by providing heterogeneous and dynamic measurements of fuel load, type, and flammability. Machine learning methods such as random forests provide an empirical framework that are high-accuracy, computationally efficient, interpretable and able to model complex ecological relationships. Here we use high resolution (70 m, every 3–5 days) remote sensing observations of evapotranspiration and evaporative stress index, which represent plant water stress, from Ecosystem Spaceborne Thermal Radiometer on Space Station (ECOSTRESS), as well as topography and weather data, to predict burn severity and occurrence for 8 large wildfires that burned 3715 km2 from 2021 and 2022 in New Mexico, USA. These fires ranged from low to high burn intensity, and covered a diverse range of ecoregions (deserts, grasslands, forests), plant species, and topographies. We used a single model to predict the burn severity of all wildfires one week before occurrence. The prediction accuracy was greatest when using all predictors (ECOSTRESS, weather, topography) (R2 = 0.77). We assessed the role of spatial autocorrelation in driving model performance by: (1) increasing the sample spacing of our dataset, (2) …
Full-Stack Web Applications: Infrastructure, Development Pipelines & Devsecops, Yassine Chahid, Patrick Slattery
Full-Stack Web Applications: Infrastructure, Development Pipelines & Devsecops, Yassine Chahid, Patrick Slattery
Publications and Research
This research explores emerging development methodologies and technologies which facilitate the deployment and maintenance of software applications. It evaluates architectural styles for the development of software such as monolithic (legacy) and microservice models, with a focus on their key differences such as scalability or project structure through to the development of an application. By examining methodologies such as Agile and continuous integration/continuous development pipelines along with the deployment tools Docker and Git for version/release control, the study analyzes how these innovations speed up development, improve existing practices, and serve as the foundation for development operations. Cloud solutions for tasks such …