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The Role Of Special Services In Providing National Information Security, Volodymyr Artemov, Alexander Rusnak, Viktor Trepak, Grygorii Ostafiichuk, Alexandr Kalinin Jun 2026

The Role Of Special Services In Providing National Information Security, Volodymyr Artemov, Alexander Rusnak, Viktor Trepak, Grygorii Ostafiichuk, Alexandr Kalinin

Journal of Strategic Security

The growing dependence of states on digital infrastructures has elevated national information security to a matter of strategic importance. This study examines the role of special services (intelligence agencies) in protecting against cyber threats, focusing on their legal, operational, and technological functions. Using a combination of comparative legal analysis, case law review, expert surveys, and statistical modelling across 20 countries, the research highlights both strengths and limitations of current approaches. The findings demonstrate that states with clear and specific legislation on intelligence and cybersecurity achieve a 26% higher rate of preventive success than those with ambiguous frameworks. Strong judicial oversight …

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Shadow Logistics: Military Vulnerability Through Civilian Dependence, Gilles A. Paché Jun 2026

Shadow Logistics: Military Vulnerability Through Civilian Dependence, Gilles A. Paché

Journal of Strategic Security

The rapid evolution of civilian-origin technologies repurposed for defense is reshaping the foundations of logistical advantage and altering the conditions under which armed forces operate. Modern missions rely on an extensive ecosystem of infrastructures—port terminals, cloud services, data platforms, and civilian contractors—whose reliability frequently lies beyond the authority of public institutions. This environment gives rise to shadow logistics, a network of civilian systems largely absent from conventional doctrine yet capable of producing significant operational disruptions when failures occur. Case studies show that some dark assets, whether physical or informational, can act as multipliers of effectiveness while simultaneously creating systemic vulnerabilities …

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Chokepoints: American Power In The Age Of Economic Warfare. By Edward Fishman. Portfolio Penguin, 2025., Mark T. Peters Ii Jun 2026

Chokepoints: American Power In The Age Of Economic Warfare. By Edward Fishman. Portfolio Penguin, 2025., Mark T. Peters Ii

Journal of Strategic Security

No abstract provided.

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Numerical Evaluation Of A Zero Poisson’S Ratio Structure In Μ-3d-Printed Self-Expanding Nitinol Stents, Farhana Yasmin, Ana Vafadar, Majid Tolouei-Rad Jun 2026

Numerical Evaluation Of A Zero Poisson’S Ratio Structure In Μ-3d-Printed Self-Expanding Nitinol Stents, Farhana Yasmin, Ana Vafadar, Majid Tolouei-Rad

Research outputs 2022 to 2026

Stenting is a minimally invasive treatment used in managing peripheral artery disease (PAD). However, clinical challenges persist, including in-stent thrombosis and restenosis, primarily driven by axial foreshortening or elongation and suboptimal balance between radial stiffness and flexibility inherent to conventional stent designs. This study proposes an innovative arrow-shaped geometry exhibiting zero Poisson’s ratio (ZPR) behaviour for 3D-printed self-expanding Nitinol stents. The complete stent deployment process was modelled using finite element analysis (FEA), including radial crimping and subsequent expansion to enable systematic parametric investigation while accounting for µ-3D printing constraints. Response surface methodology (RSM) rigorously evaluated mechanical performance, defining peak stress, …

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Marketing As Practice: Resolving The Hunt-Anderson Stalemate Through Practice Theory, Stephen A. Lemay, Martin Svendsen Jun 2026

Marketing As Practice: Resolving The Hunt-Anderson Stalemate Through Practice Theory, Stephen A. Lemay, Martin Svendsen

Journal of Applied Marketing Theory

This paper revisits methodological debates in marketing theory, tracing the progression from Sidney Levy’s work on symbolic consumption to the Hunt–Anderson empiricist–relativist debate. We argue that this debate rests on a category error: marketing has been misclassified as either a science or an interpretive discipline. Drawing on contemporary practice theory, we reconceptualize marketing as a professional practice oriented toward creating and managing exchange relationships within cultural contexts. This perspective resolves the Hunt–Anderson stalemate, clarifies the epistemological foundations of Consumer Culture Theory (CCT) and Transformative Consumer Research (TCR), and generates distinct research questions and methods. Through comparative exemplars, we show how …

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Radiotheranostics For Gynecological Pathologies, Joni Sebastiano Jun 2026

Radiotheranostics For Gynecological Pathologies, Joni Sebastiano

Dissertations, Theses, and Capstone Projects

Molecular imaging, specifically positron emission tomography (PET), is vital for detecting disease and understanding its biological makeup. The exploitation of radiolabeled antibodies for PET imaging has proven to be indispensable to the field of molecular imaging over the last several decades. The development of radioimmunoconjugates for use in immunoPET has not only allowed for the sensitive, specific, and high-resolution detection of disease, but has also enabled a deeper understanding of the disease biology, ultimately guiding more personalized therapeutic strategies. Most typically, this technology is harnessed for the diagnosis and treatment of cancer, however more recently, the field has explored the …

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Mediating Energy And Charge Transfer Dynamics Of Lead Halide Perovskite Nanocrystals Via Surface Chemical Approaches, Aaron S. Malinoski Jun 2026

Mediating Energy And Charge Transfer Dynamics Of Lead Halide Perovskite Nanocrystals Via Surface Chemical Approaches, Aaron S. Malinoski

Dissertations, Theses, and Capstone Projects

Energy and charge transfer are the fundamental mechanisms by which semiconductor nanocrystals interact with their external environment and underpin all light-conversion related applications. Lead halide perovskite nanocrystals (PNCs) are a relatively new class of semiconductor nanocrystals that possess a unique and dynamic surface chemical environment. Investigations into the influence of these surface chemical conditions on the electronic coupling between surface-bound molecular acceptors and the perovskite nanocrystals, and how the surface chemistry can be manipulated, in turn controlling the charge and energy transfer mechanisms, is the focus of this dissertation. Through ligand-shell engineering using commercially available, inexpensive small molecules, the surface …

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Enhancing Ecological Validity In Speech-In-Noise Testing: Integrating Virtual Reality For A Multisensory Audiological Experience, Paulina Lee Jun 2026

Enhancing Ecological Validity In Speech-In-Noise Testing: Integrating Virtual Reality For A Multisensory Audiological Experience, Paulina Lee

Dissertations, Theses, and Capstone Projects

Despite the remarkable advances in hearing healthcare technology, the speech recognition tests used in routine clinical audiological assessment have remained essentially the same for decades.  Monosyllabic word recognition tests in quiet, such as the Northwestern University Auditory Test No. 6 (NU-6; Tillman & Carhart, 1966), have served as the audiology field’s default measure of speech understanding.  Modern speech-in-noise (SIN) tests, such as the QuickSIN (Killion et al., 2004), have emerged, yet they remain auditory-only, leaving an unignorable gap between what clinical tests measure and how patients communicate in daily life.  The present study examined whether pairing a standard SIN test …

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A Comparison Of Manufacturers’ Claims Of Attenuation Rates In Non-Custom Earplugs, Skyler M. Shipley Jun 2026

A Comparison Of Manufacturers’ Claims Of Attenuation Rates In Non-Custom Earplugs, Skyler M. Shipley

Dissertations, Theses, and Capstone Projects

Recreational and social environments frequently expose individuals to high intensity noise environments; however, the use of hearing protection devices (HPDs) remains limited. This study evaluated whether non-custom, over-the-counter musicians’ earplugs provide attenuation consistent with manufacturers’ claims and whether cost is associated with performance. Six commercially available earplug models were tested using both human participants and a KEMAR manikin system. Attenuation was measured across frequencies from 250–8000 Hz (octave and inter-octave frequencies) and were tested using different ear tip sizes. Results indicated that several earplugs achieved attenuation levels comparable to or exceeding their advertised noise reduction ratings (NRR), though consistency varied …

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Computational Insights Into Nucleosome Dynamics In Epigenetics Using Molecular Dynamics Simulations, Rutika Patel Jun 2026

Computational Insights Into Nucleosome Dynamics In Epigenetics Using Molecular Dynamics Simulations, Rutika Patel

Dissertations, Theses, and Capstone Projects

Nucleosome core particles (NCP) are the building blocks that form a highly organized and compact chromatin structure. Nucleosomes package DNA in the nucleus of eukaryotic cells. The NCP consists of about 147 base pairs of DNA wrapped around the histone octamer, with 1.65 superhelical turns in a left-handed manner. The histone octamer is composed of two copies of H3, H4, H2A, and H2B. Together with histone H1 and linker DNA, they further assemble into a higher-order chromatin structure. The nucleosome complex is stabilized by electrostatic interactions between positively charged histone residues and the negatively charged DNA backbone. To effectively access …

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Measuring Islamic Republic Propaganda In Western Media Coverage Of Iran: A Computational Framework, Leila Habibi Jun 2026

Measuring Islamic Republic Propaganda In Western Media Coverage Of Iran: A Computational Framework, Leila Habibi

Dissertations, Theses, and Capstone Projects

Detecting propaganda is fundamentally difficult: effective propaganda must simultaneously conceal persuasive intent while achieving persuasive effect, which means that sophisticated propagandistic discourse necessarily occupies the ambiguous middle of a rhetorical spectrum rather than its obvious extremes. This thesis defines this property as the dual constraint problem and argues that it poses two challenges for the binary classification framing that dominates propaganda detection in Natural Language Processing (NLP). First, propaganda by definition does not come with clear labels: no propaganda arm willingly accepts the designation, so reliable ground truth does not exist at the source. Second, because the producer is actively …

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Semi-Peripheral Whiteness In A Global City: Central And Eastern European Women In Dubai, Hana Rubenstein Jun 2026

Semi-Peripheral Whiteness In A Global City: Central And Eastern European Women In Dubai, Hana Rubenstein

Dissertations, Theses, and Capstone Projects

This capstone examines how Central and Eastern European (CEE) women navigate professional mobility in Dubai and asks to what extent Dubai enables them to bypass the post-socialist stigma attached to their semi-peripheral European identity. Situated at the intersection of migration studies, gender, and critical scholarship on semi-peripheral whiteness, the study addresses the limited attention paid to CEE women as economic actors outside European contexts, where they are often either absorbed into the category of “Western expatriates” or reduced to highly gendered stereotypes. Grounded in a qualitative, interpretivist approach, the study combines digital discourse analysis of 50 publicly accessible LinkedIn profiles …

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Gremlin Theory: A Film Art Of Joe Dante, Frank Falisi Jun 2026

Gremlin Theory: A Film Art Of Joe Dante, Frank Falisi

Dissertations, Theses, and Capstone Projects

This thesis seeks to establish the work of the filmmaker Joe Dante as a catalyzing and anarchic force let loose inside larger, dumber superstructures: linear narrativity, Hollywood, America, etc. It works to read the genre films he worked on—many of them made as popular entertainment for mainstream movie studios—as moments of actual subversion, allocating status quo (studio system) resources to create a biting-back against American imperial norms in the lingua franca of Marx and the Marx Brothers: gummy leisure-seeking stupidity and Gremlin transformation. This thesis seeks to argue that to understand Dante’s work is to understand pop transfiguration itself. This …

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Riding Two Cities: A Data Visualization Capstone Comparing Nyc's Bmt Subway And Tokyo's Yamanote Line, Andreina R. Abreu Jun 2026

Riding Two Cities: A Data Visualization Capstone Comparing Nyc's Bmt Subway And Tokyo's Yamanote Line, Andreina R. Abreu

Dissertations, Theses, and Capstone Projects

Every weekday, millions of people trust two radically different urban rail systems to get them where they need to go. New York City’s Brooklyn-Manhattan Transit (BMT) group threads through the boroughs in a branching web of eight lines. Tokyo’s Yamanote Line runs as a single, closed loop around the capital’s core. Both systems move enormous volumes of people through dense, high-demand environments, but they do it in fundamentally different ways, and they share very different amounts of information about how they’re doing it. According to federal reporting, MTA New York City Transit served over 1.1 billion unlinked passenger trips in …

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Electromagnetic Counterparts To Active Galactic Nucleus Disk-Embedded Binary Black Hole Mergers, Emily Mcpike Jun 2026

Electromagnetic Counterparts To Active Galactic Nucleus Disk-Embedded Binary Black Hole Mergers, Emily Mcpike

Dissertations, Theses, and Capstone Projects

The accretion disks of active galactic nuclei (AGN) are promising environments for producing binary black hole (BBH) mergers, which have been detected via gravitational waves (GW) with LIGO-Virgo-KAGRA (LVK). BBH mergers embedded in AGN disks are unique among GW formation channels in their generic ability to produce electromagnetic (EM) counterparts, via interactions between the merger remnant and the surrounding disk gas (though these are not always observable). While such mergers represent valuable multi-messenger sources, the lack of predictive statistical models in existing literature currently limits our ability to select possible EM counterparts with GW detections in archival data and in …

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Gathering Knowledge, Sustaining Science: The Female Forager And American Mushroom Culture, 1880–1930, Madeline S. Dede-Panken Jun 2026

Gathering Knowledge, Sustaining Science: The Female Forager And American Mushroom Culture, 1880–1930, Madeline S. Dede-Panken

Dissertations, Theses, and Capstone Projects

Unearthing origins of modern mycophilia, this dissertation explores the mushroom mania which reverberated through American society at the turn of the twentieth century, empowering Anglo-American women in new ways. America’s largely forgotten first mushroom fad illuminates gendered negotiations of foraging culture and public science. Beginning in the 1880s, a remarkable cohort of women helped turn mushrooms from shunned, mysterious organisms into wholesome delicacies for culinary and intellectual enrichment. Female enthusiasts fostered a vibrant mushroom culture and nationwide network of mycophiles. Culinary applications and poisoning fears legitimized women’s presence in scientific endeavors, positioning mycology as vital female knowledge for public safety …

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Variational Methods For Semilinear Pdes With Dirac Singularities, Samuel J. Magill Jun 2026

Variational Methods For Semilinear Pdes With Dirac Singularities, Samuel J. Magill

Dissertations, Theses, and Capstone Projects

This dissertation utilizes a variational framework for semilinear elliptic equations in two dimensions with Dirac measure data. The central objects of study are equations of the form −ΔU = f(U) + Σj=1N αjδpj on bounded Lipschitz domains Ω ⊂ ℝ² with homogeneous Dirichlet boundary condition, and on a flat torus 𝕋², where αj is positive for the Dirichlet setting and αj is negative on the torus. Solutions are obtained by minimizing the restriction of an energy functional to an order interval determined by explicit sub- and supersolutions; the Euler–Lagrange equation is recovered …

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A Data Analysis Study Of Temperature Based On California Cooperative Oceanic Fisheries Investigations (Calcofi) Data., Afsana Mimi Jun 2026

A Data Analysis Study Of Temperature Based On California Cooperative Oceanic Fisheries Investigations (Calcofi) Data., Afsana Mimi

Dissertations, Theses, and Capstone Projects

This research presents an integrated analytical framework for predicting ocean temperatures using long-term observations from the California Cooperative Oceanic Fisheries Investigations (CalCOFI) data files. The study applies advanced data engineering and statistical modeling to assess how a variety of indicators, such as salinity, dissolved oxygen, key nutrients, and ocean depth shape oceanic temperature patterns along the California coastline. Using Microsoft SQL Server software for large-scale data integration and the R for statistical packages (R Core Team, 2025) for statistical computation, I developed and compared multiple regression models, including the ridge regression model, to evaluate the relative influence of physical and …

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Considering Numerical Relativity For Upgrades In Mcfacts Merger Dynamics, Shawn K. Ray Jun 2026

Considering Numerical Relativity For Upgrades In Mcfacts Merger Dynamics, Shawn K. Ray

Dissertations, Theses, and Capstone Projects

Binary black hole mergers (BBH), some likely originating from active galactic nuclei (AGN), are observed by ground-based detectors such as LIGO-Virgo-KAGRA (LVK) and will be detected by future space-based detectors such as the Laser Interferometer Space Antenna (LISA) and the Laser Interferometer Lunar Antenna (LILA). The dynamics of AGN may be responsible for a significant fraction of BBH mergers soon to be observed by LISA and LILA, yet the dynamics of BBH mergers within AGN disks remains ambiguous despite their appearance in gravitational wave observations. Monte carlo For AGN Channel Testing and Simulation (McFACTS) is an open-source software used to …

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Inductive Biases In Field-Level Cosmological Inference From Galaxy Catalogs, James O'Connor Baldwin Jun 2026

Inductive Biases In Field-Level Cosmological Inference From Galaxy Catalogs, James O'Connor Baldwin

Dissertations, Theses, and Capstone Projects

We perform field-level likelihood-free inference of the matter density parameter Ωm from simulated galaxy catalogs using machine learning models with differing inductive biases. Using features extracted from hydrodynamic simulations in the CAMELS suite, we investigate how both observable choice and model architecture govern the extraction of cosmological information. We consider galaxy positions and line-of-sight peculiar velocities, both separately and in combination, and compare permutation-invariant Deep Sets, implemented with either standard multilayer perceptrons (MLPs) or Kolmogorov–Arnold Networks (KANs), to graph neural networks (GNNs) implemented with MLPs, which explicitly encode spatial relations. We evaluate inference performance under both in-distribution and out-of-distribution (OOD) …

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Vestigial Choreographies: Climate Consciousness In The Long Nineteenth Century, Alexandra A. Rego Jun 2026

Vestigial Choreographies: Climate Consciousness In The Long Nineteenth Century, Alexandra A. Rego

Dissertations, Theses, and Capstone Projects

The aims of this project are twofold: (a) to develop a method of theoretical analysis and (b) to put this method into pointed use. In service of (a), I propose a method of choreographic analysis. This method operates relationally, highlighting the production of movement and stillness among and between bodies, objects, and encounters. Choreographic analysis draws from methods typically sequestered to dance studies. Towards aim (b), this project demonstrates the relevance and breadth of choreographic analysis by connecting it to ecocriticism. Throughout this project, I apply choreographic analysis to a diverse set of case studies. I use choreographic analysis to …

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Building On Rented Land: An Interpretive Phenomenological Analysis Of Black Women’S Digital Homeplace-Building On Tiktok, Monica Thompson Jun 2026

Building On Rented Land: An Interpretive Phenomenological Analysis Of Black Women’S Digital Homeplace-Building On Tiktok, Monica Thompson

Dissertations, Theses, and Capstone Projects

This interpretative phenomenological analysis (IPA) examined the lived experiences of seven Black women TikTok users, exploring how they describe and make meaning of TikTok as a space of digital expression amid algorithmic constraint and platform precarity. Grounded in Black Cyberfeminism, Critical Race Theory, and hooks’ (1990) homeplace theory, the study asked three questions: how Black women describe their use of TikTok; how they make meaning of the platform as a space of expression; and how they navigate platform instability, political threats, and content restrictions while maintaining authentic expression. Drawing on semi-structured Zoom interviews and analyzed using Smith et al.’s (2009) …

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Reexamining The Croton Aqueduct: A Ward-Level Microhistorical Analysis Of Infrastructure And Cholera Mortality In 1849 New York City, Alexandria R. Toothman Jun 2026

Reexamining The Croton Aqueduct: A Ward-Level Microhistorical Analysis Of Infrastructure And Cholera Mortality In 1849 New York City, Alexandria R. Toothman

Dissertations, Theses, and Capstone Projects

This work reexamines the Croton Aqueduct’s role in public health by shifting analysis from the citywide level to the ward level, revealing that infrastructure expansion did not produce uniform benefits across New York City. When the Croton Aqueduct opened in 1842, it was celebrated as an achievement that would deliver pure water and eliminate disease. However, only seven years after its opening, in 1849, cholera returned with greater force in the Sixth Ward. This work shows that the uneven distribution of Croton infrastructure corresponded with uneven cholera mortality rates, challenging narratives that present Croton as a singular triumph of urban …

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Supramolecular Assembly In Short Peptide Systems For Selective Metabolite Recognition And Drug Nanoencapsulation, Maithreyi Ramakrishnan Jun 2026

Supramolecular Assembly In Short Peptide Systems For Selective Metabolite Recognition And Drug Nanoencapsulation, Maithreyi Ramakrishnan

Dissertations, Theses, and Capstone Projects

Short peptides can form adaptive supramolecular assemblies, and understanding how minimal sequences organize around neurometabolites or hydrophobic cancer drugs enables the rational design of functional materials. This thesis combines molecular dynamics with experimental validation to establish design rules linking peptide sequence to emergent structure and function. Chapter 1 outlines the molecular determinants governing peptide assembly. Chapter 2 reviews computational workflows that reveal sequence-dependent conformations and supramolecular organization. Chapter 3 applies these principles to Dynamic Peptide Libraries which identify tetrapeptides that selectively interact with neurometabolites. Chapter 4 extends the same interaction-driven framework to design tryptophan-rich pentapeptides that co-assemble with kinase inhibitors …

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Managing Migration And Political Change: Lessons From Sweden’S 2015 Asylum Crisis For South Korea’S Emerging Immigration Era, Sean Lee Jun 2026

Managing Migration And Political Change: Lessons From Sweden’S 2015 Asylum Crisis For South Korea’S Emerging Immigration Era, Sean Lee

Dissertations, Theses, and Capstone Projects

The purpose of this capstone project is to analyze how two nations that have little in common in terms of geography or politics have been required to deal with immigration issues in ways that their institutions did not anticipate. One nation has been dealing with immigration-related issues for some time now, while the other nation has yet to do so. In 2015, when Sweden received approximately 162,000 asylum applications in one year alone, Sweden’s housing systems were strained, many of the municipalities were unable to keep up with the demand, and the political climate began to shift in ways that …

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To Lecture Capture Or Not To Lecture Capture? The Answer For Legal Education Appears To Be A “Regulated Yes”, Nikos Harris Kc Jun 2026

To Lecture Capture Or Not To Lecture Capture? The Answer For Legal Education Appears To Be A “Regulated Yes”, Nikos Harris Kc

Dalhousie Law Journal

The debate over the use of technology in the law classroom is often framed as the necessary use of modern forms of information sharing versus the creation of distractions which undermine deeper learning. One subject of significant debate in law faculties is whether students should have regular access to taped lectures from their courses, often referred to as “lecture capture.” Most universities have systems that can routinely record classes, and there are a number of pedagogical benefits which flow from student use of taped lectures. However, the issue of providing broad access to lecture capture is a complex one which …

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The Degradation Of Prices: Platform Power, The Erosion Of Price Comparison, And Rebuilding Comparison Shopping In The Digital Economy, Stephanie T. Nguyen, Shaoul Sussman Jun 2026

The Degradation Of Prices: Platform Power, The Erosion Of Price Comparison, And Rebuilding Comparison Shopping In The Digital Economy, Stephanie T. Nguyen, Shaoul Sussman

Center for Law and the Economy

The ability to know the price of a product or service and then compare prices of similar products or services is a foundational cornerstone of consumer choice and competitive markets. Once, buyers could more easily compare identical products across multiple sellers. However, this process has systematically degraded over time and has become increasingly difficult to do in practice. When prices are a reliable signal of product and market value, consumers can make informed purchasing decisions and sellers can compete for business by offering more attractive prices to consumers. This is a core market force that keeps price levels in check …

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Eliminating Barriers For The Implementation Of Automation In The Mining Industry, Sefiu O. Adewuyi, Kray Luxbacher, Kanagy David, Miller Ben, Miller Hugh, Michael Moats, Savit Mark Jun 2026

Eliminating Barriers For The Implementation Of Automation In The Mining Industry, Sefiu O. Adewuyi, Kray Luxbacher, Kanagy David, Miller Ben, Miller Hugh, Michael Moats, Savit Mark

Materials Science and Engineering Faculty Research & Creative Works

The integration of new technologies into U.S. mining operations is necessary for achieving continuous improvement in worker health and safety, as well as improving operational efficiency, but many have questioned why uptake of autonomy in the U.S. mining industry has been slow compared to other nations. Despite extensive research on mining automation, there remains a critical gap in understanding and systematically identifying the barriers to its adoption within the U.S. mining industry and globally. To quantify these barriers, a workshop model of data collection was employed. A total of 708 invitations were extended to professionals to participate in nine different …

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Public Preferences For Critical Mineral Mining In The U.S.: Evidence From A Discrete Choice Experiment, Bamidele Ajiga, Kwame Awuah-Offei, Mahelet G. Fikru Jun 2026

Public Preferences For Critical Mineral Mining In The U.S.: Evidence From A Discrete Choice Experiment, Bamidele Ajiga, Kwame Awuah-Offei, Mahelet G. Fikru

Mining Engineering Faculty Research & Creative Works

Even though there is widespread recognition that we need to mine more critical minerals for national security and energy needs, concerns about environmental impacts often lead to public opposition to proposed new mining projects. The literature lacks sufficient data from communities with proposed mineral projects to assess drivers of differences in support. This study investigates public preferences for mining projects in three states in the United States with proposed critical minerals projects, using a discrete choice experiment. Respondents evaluated projects that vary in job creation, state tax revenue, tailings reprocessing content, groundwater impacts, and surface water impacts. We also randomly …

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Nanobubble Flotation Strategy Of Fluorite Integrating Experimental And Dft Analysis, Ahmed Sobhy, Hadeer El-Shamy, Nourhan Ahmed, Mohsen Farahat Jun 2026

Nanobubble Flotation Strategy Of Fluorite Integrating Experimental And Dft Analysis, Ahmed Sobhy, Hadeer El-Shamy, Nourhan Ahmed, Mohsen Farahat

Mining Engineering Faculty Research & Creative Works

The conventional froth flotation of fluorite from quartz-rich ores is reagent-intensive and faces selectivity challenges, impacting its economic and environmental sustainability. This study presents a novel green intensification strategy through the synergistic integration of nanobubble (NB) technology with Density Functional Theory (DFT) simulations. Systematic optimization of sodium oleate (collector) and sodium silicate (depressant) dosages in conjunction with hydrodynamic parameters (air/wash water velocity, NB generation rate) was conducted in both mechanical and column flotation systems. The incorporation of nanobubbles yielded transformative improvements: in mechanical flotation, collector and depressant consumption were reduced by over 50% while maintaining a concentrate grade exceeding 90% …

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