Digital Commons Network^™

Extraction Of Metallic Silver In Powder Form From Electronic Wastes, Mastura Kh. Aripova, Umar A. Yakhyaev, Ripsime V. Mkrtchyan, Shoxrux B. Naimov

CHEMISTRY AND CHEMICAL ENGINEERING

The research is dedicated to the extraction of silver in powder form from electronic wastes and the selective separation of associated elements through the application of hydrometallurgical methods. The conducted study determined the initial chemical composition of the electrical engineering waste (wt.%): Si – 0.08, Al – 0.133, Fe – 0.021, Mg – 0.614, Cu – 0.005,  Zn – 0.02, Ag – 46.9,Zr – 0.557,  Ta – 0.004, Pb – 0.003, Mo – 0.002, S – 0.026. A system for the efficient extraction of metals with minimal losses was developed for the selective dissolution of metals such as Cu, Ni, …

Study Of Microstructural Defects Of Drill Bit Teeth Using Microscopic Methods, Odiljon E. Abdurakhmonov, Mastura Kh. Aripova, Orifjon O. Khomidov, Bakhtiyar T. Zakhidov, Amir I. Abidov

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this study is to investigate microstructural defects in drill bit cutting elements, including milled teeth and WC–Co cemented carbide inserts, to clarify their morphology, chemical–phase characteristics, and potential contribution to manufacturing-related defects. To achieve this goal, the study applied a combined approach based on optical microscopy and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDS). First, the study examined surface and microstructural features, such as pores, depressions, and local heterogeneities formed during manufacturing. Then, it conducted detailed SEM–EDS analyses of selected local regions, including crack initiation sites. As a result, the study revealed that cutting elements …

Sorption Of Lanthanum(Iii) Ions On Impregnated Solid Extractants, Jaloliddin Q. Abdurashidov, Tadjigul R. Odamova, Maksim A. Kamarou, Zuhra Ch. Kadirova, Shahlo Sh. Daminova

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of this work was to obtain solid extractants by impregnating the organic reagent 1-phenyl-1,3-butadione (BNA) onto carriers based on styrene-divinylbenzene copolymers (PAD600, PAD400) as well as activated carbon, and to investigate the sorption isotherms of La³⁺ ions under static conditions. The structure of the sorbents before and after La³⁺ ion sorption was studied using SEM-EDX and IR spectroscopy. The parameters of sorption extraction of La³⁺ ions, including extraction degree, sorbent capacity, and distribution coefficient, were evaluated. It was established that the PAD600-BNA sorbent exhibits the most favorable sorption properties toward La³⁺ ions.

Two-Stage Heat Treatment For Producing Highly Crystalline H-Bn Nanoparticles From Boric Acid And Urea, Sherzod E. Abdurakhmonov, Mastura Kh. Aripova, Umar A. Yakhyaev, Shoxrux B. Naimov, Odiljon E. Abdurakhmonov

CHEMISTRY AND CHEMICAL ENGINEERING

The purpose of the study was to investigate the formation of the crystal structure of hexagonal boron nitride (h-BN) nanoparticles obtained by the chemical-thermal method using two-stage heat treatment. Boric acid and urea were used as starting precursors, enabling ammonia-free synthesis conditions. It is shown that the first thermal stage at 600 °C under a nitrogen atmosphere leads to the formation of a predominantly amorphous BN-containing precursor, whereas the second stage at 1000 °C in an N₂/H₂ atmosphere promotes crystallization of a highly ordered hexagonal h-BN phase. The morphology and particle size distribution were examined by transmission …

Structure And Morphology Of Ultradispersed Erbium Ytterbium Oxide Powders Obtained By Deposition Method, Eygeniy N. Poddenezhny, Andrei A. Boiko, Natalya E. Drobyshevskaya, Vladimir S. Urbanovich, Ekaterina E. Trusova

CHEMISTRY AND CHEMICAL ENGINEERING

The aim of research is to develop a new method for synthesis of ultra-dispersed crystalline powders of lanthanide oxides, in particular, erbium oxide doped with ytterbium oxide, intended for making transparent ceramics. The formation of nanostructured powders of the erbium oxide – ytterbium oxide system using deposition and heat treatment processes by co-deposition of salt solutions mixed with ammonium carbonate and hydrogen peroxide complex solution at temperature of 10 °C followed annealing at 100, 650, 900 and 1200°C was studied. Studies of the morphological and structural characteristics of the powders using scanning electron microscopy and X-ray phase analysis showed that …

Effect Of Variety And Seaweed Extract Spray In The Content Of Some Medically Active Phenolic Compounds In Grape Fruits, Ali Ahmed Hussein Almyali, Salim Kadhim, Ali S. Hassoon, Ameer Al Fatlawy

Al-Bahir

Grape (Vitis vinifera L.) is one of the most economically significant fruit crops which has a large adaptive range, nutrition and medicine effect. A variety of 70 types of grapes are planted on more than 11.6 million plants in Iraq, generating a total annual output of more than 421,000 tons. Increasing grape quality, and particularly the phenolic composition recently has been of major interest. Leaf nutrition – particularly seaweed extracts, being rich in amino acids, trace elements and growth promoting substances – has proved to be a potential tool to enhance plant growth and fruit biochemical quality. The …

Classification Of Land Cover In Sentinel-2 Imagery Using Machine Learning Models, Ehsan Ali Al-Zubaidi, Mohammed Ridha Hammoodi, Ahmed Naser Alzurfi

Al-Bahir

Remote sensing data of medium resolution are commonly used to classify land cover, and machine learning (ML) models have taken on a central aspect in the necessary data analysis. Ordinarily, land cover is coded on a pixel basis on the basis of Digital Number (DN) values, which in turn are computed across several spectral bands. This paper is concerned with land cover mapping in Mosul, Iraq, based on satellite images captured by Sentinel-2. Two platforms featuring unsupervised classification algorithms were used, Google Earth Engine and ArcMap, making it possible to use K-means and X-means in Google Earth Engine and ISO …

Measuring Multimodal Equity In Resource-Challenged Mpos, Christopher Ferrell, David Reinke, John M. Eells

Mineta Transportation Institute

Ensuring transportation investments are equitable across different populations and travel modes is a priority for many agencies, yet existing tools often make these assessments difficult, especially for smaller and resource-constrained organizations. To address this gap, this report provides the findings of Phase II of our study on reviewing and developing transportation equity metrics. The Phase I project investigated transit equity metrics and provided recommendations on advancements in quantitative methods. Building on Phase I recommendations, this study investigates low-cost methods for comparing the equity between auto (roadway) and transit performance or investments for low resource transportation agencies. A literature review revealed …

The Daily Gamecock: March 2026, University Of South Carolina, Office Of Student Media

2026

No abstract provided.

A Universal Influenza Vlp Vaccine Built On Conserved Antigens, Labone Akter, Yibo Li, Xinyuan Chen

Poster Presentations

The ectodomain of matrix protein 2 (M2e) is highly conserved among influenza A viruses and represents an attractive target for universal influenza vaccines. Because M2e is weakly immunogenic, highly immunogenic platforms are needed to elicit protective responses. We recently developed a flagellin-displayed hepatitis B core (HBc) virus-like particle (VLP) vaccine (FH-M2e VLPs) in which the surface-exposed D3 domain of FljB was replaced with four tandem M2e copies from human H1/H3, swine H1, and avian H5/H7 strains. FH-M2e VLPs induced high anti-M2e IgG and conferred cross-protection in mice; however, they also elicited substantial anti-FljB (anti-flagellin) antibodies. We hypothesized that removing the …

Analysis Of Parameters For Improved Morphogenic-Regulator-Meditated-Transformation Using Immature Embryo Explants In Sorghum Bicolor., Ryan Donnelly, Yu-Ton Chen, Michael Tilelli, Erik A. Myers, Albert P. Kausch

Poster Presentations

Reliable Agrobacterium mediated transformation of Sorghum remains constrained by low transformation frequencies and the requirement for high quality immature embryos (IEs). A useful conceptual framework describes transformation efficiency T=V(Cd×Ci×Cr), as the product of DNA delivery (Cd), stable integration (Ci), regeneration competence (Cr), and experiment specific variables (V). Using this framework, in a multi-year study we systematically evaluated parameters predicted to influence DNA delivery and regeneration. Standard IE workflows established baseline developmental dynamics of somatic embryogenesis and regeneration. To increase DNA delivery, we tested Agrobacterium strains and ternary vir helper vectors, which enhanced bacterial attachment and transient reporter expression. To elevate …

Machine Learning In Sensors: Feature Learning From Complex Spectra In Mmwave Radar Signals, Erkan Karakus, Qing Yang

Poster Presentations

This work discusses how to directly extract features from complex-valued spectra using an energy-based probability distribution that represents complex-valued data. As an extension of the well-known restricted Boltzmann machine (RBM), the proposed model, the complex-valued restricted Boltzmann machine (CRBM), is made to deal with complex valued visible units. With the use of contrastive divergence (CD) or Gibbs sampling, the CRBM, like the RBM, develops a grasp of the relationships between visible and hidden units without requiring connections between units in the same layer. We propose a new in-sensor computing architecture that can dramatically reduce the amount of data transferred from …

Biosynthesis Of Manganese Oxide Nanoparticle For Agricultural Fertilization Application, Nicoly Welter, Vinka Oyandel-Craver

Poster Presentations

Green synthetized nanoparticles have been the object of study for their use as fertilizers in the agricultural field. Among them, manganese oxide nanoparticles (MnONPs) have been used to increase the growth and biomass of rice seedlings, mung bean, moringa plants, among others. In this work, we explore the biosynthesis and purification of MnONPs for these environmental applications, seeing as the biosynthesis of MnONPs consumes less thermal energy compared to chemical synthesis methods. In this study, MnONPs were biosynthesized using a strain derived from the marine environment, Pseudomonas putida GB-1. The bacteria were incubated in a batch system in Leptothorix media, …

Fsec Meeting Minutes March 27, 2026, University Of Rhode Island Faculty Senate

Faculty Senate Executive Committee Minutes

No abstract provided.

Strain Gauge Analysis And Deformation Detection Of Maxillary Denture Bases Reinforced By Cad/Cam Milled Zirconia And Cobalt Chromium (Co-Cr) Frameworks: An In-Vitro Study, Maha Nagy Kamal, Marwa Ezzat Sabet, Ghada Mahmoud Elgindy, Hebatallah Tarek Mohamed

Dentistry

Background A lot of studies have demonstrated the increased hardness of the reinforced maxillary dentures. However, the amount of stress induced by different reinforcement materials under the reinforcement dentures and their effect on the underlying supporting tissues and on the deformation of the denture bases were questionable. This study was conducted to compare the stresses induced within the supporting oral tissues from maxillary denture bases reinforced with computer-aided designing/computer-aided manufacturing CAD/CAM zirconia framework or cobalt chrome (Co-Cr) framework, and to detect the deformation that occurred to these bases. Materials and methods Twenty-six maxillary complete dentures were fabricated and divided into …

Evaluation Of 5g-Enabled Resource Allocation For Smart Led Streetlight Infrastructure, Ahmed Hassebo, Yasser Hassebo

Publications and Research

The proliferation of 5G networks facilitates high-speed, low-latency communication essential for the advancement of smart city infrastructure. This research investigates the performance of 5G enabled connectivity for smart LED streetlight systems, focusing on resource allocation strategies between mission-critical and latency-tolerant services. Utilizing MATLAB simulations, the study evaluates network slicing and scheduling algorithms through key performance indicators (KPIs) including throughput, end-to-end delay, and Packet Error Rate (PER). The proposed framework integrates dynamic scheduling mechanisms—analogous to LTE uplink protocols—to optimize energy efficiency and data responsiveness across large-scale urban lighting deployments. Empirical results indicate that 5G Ultra-Reliable Low-Latency Communication (URLLC) effectively supports real-time …

(W)Holistic Approaches: Empowering The Whole Of Child, Annette Johnson, Tiarnah Hamlin, Jack Lundie-Jenkins, Erin King, Karen Malyon, Jennifer Cartmel

International Journal of Playwork Practice

Holistic approaches are an evolving pedagogy in the Outside of School Hours Care (OSHC) sector that, despite its recognised value, remain an elusive practice for many educators. This ambiguity has been acknowledged in My Time Our Place (MTOP): Framework for School Age Care in Australia 2.0 (AGDE, 2022). In alignment with this process, the ability for OSHC and extended learning to empower children’s self-identities is fundamental to supporting their holistic development. In a world emerging from the coronavirus pandemic, the ongoing impacts on children – the result of physical separation and societal stressors – cannot be ignored. Accordingly, the child’s …

Unl Authorship And Open Access Citation Impacts After A Decade (2015-2024): A Preliminary Report On Articles Indexed By Elsevier’S Scopus, David C. Tyler, Pei-Ying Chen, Erica Defrain

University of Nebraska-Lincoln Libraries: White Papers

The authors addressed the following research questions:

• Did the articles with UNL Lead Authors produce more citations than articles with UNL Contributing Authors?
• Did OA, as identified by Scopus at the journal and article levels, generate more citations?
• Were citation totals associated with the number of extra-publisher OA avenues?
• Were some publishers associated with higher citation counts than others?
• Did some subjects, by Library of Congress classification, generate more citations than others?

Evaluating Runtime Monitoring For Reinforcement Learning-Based Flight Control, Andrew Zubyk

Doctoral Dissertations and Master's Theses

Ensuring safety in adaptive flight controls systems is an ongoing challenge in aviation, especially as advancements in artificial intelligence and machine learning (AI/ML) trend upwards. Reinforcement learning is becoming more common in aerospace applications due to the ability to improve these models through training.  While models such as reinforcement learning enable controllers to learn complex behaviors from interaction with the environment, their unpredictability in novel or disturbed conditions raises severe concerns in safety-critical domains. This research investigates the integration of runtime monitoring, a real-time assurance technique, with reinforcement learning-based flight controllers to ensure safety and reliability during flight. By supervising …

2026-03-27 Agenda Booklet, Morehead State University. Board Of Regents.

Morehead State Board of Regents Agenda Books and Meeting Minutes

Agenda booklet for the Board of Regents meeting of March 27, 2026, held in Prestonsburg, which includes the meeting minutes of the meeting held on February 13, 2026.

From Fair To Cure: Guidelines For Computational Models Of Biological Systems, Herbert M. Sauro, Eran Agmon, Michael L. Blinov, John H. Gennari, Joseph L. Hellerstein, Adel Heydarabadipour, Bartholomew E. Jardine, Elebeoba May, David P. Nickerson, Lucian P. Smith, Gary D. Bader, Frank T. Bergmann, Patrick M. Boyle, Andreas Dräger, James R. Faeder, Song Feng, Juliana Freire, Fabian Fröhlich, James A. Glazier, Thomas E. Gorochowski, Tomas Helikar, Henning Hermjakob, Stefan Hoops, Peter Hunter, Princess I. Imoukhuede, Sarah M. Keating, Matthias König, Reinhard Laubenbacher, Leslie M. Loew, Carlos F. Lopez, William W. Lytton, Rahuman S. Malik-Sheriff, Andrew Mcculloch, Pedro Mendes, Lealem Mulugeta, Chris J. Myers, Jerry G. Myers, Anna Niarakis, David D. Van Niekerk, Brett G. Olivier, Alexander A. Patrie, Ellen M. Quardokus, Nicole Radde, Johann M. Rohwer, Sven Sahle, James C. Schaff, Falk Schreiber, T. J. Sego, Janis Shin, Jacky L. Snoep, Rajanikanth Vadigepalli, H. Steven Wiley, Dagmar Waltemath, Ion I. Moraru

Computational Medicine Center Faculty Papers

Guidelines for managing scientific data have been established under the FAIR principles, requiring that data be Findable, Accessible, Interoperable, and Reusable. In many scientific disciplines, especially computational biology, both data and models are key to progress. For this reason, and recognizing that such models are a very special type of "data", we argue that computational models, especially mechanistic models prevalent in medicine, physiology and systems biology, deserve a complementary set of guidelines. We propose the CURE principles, emphasizing that models should be Credible, Understandable, Reproducible, and Extensible. We delve into each principle, discussing verification, validation, and uncertainty quantification for model …

Amine-Conjugated Fret Coumarin-Cyanine Ratiometric Probes For Sensitive Viscosity And Hsa Imaging In Live Cells And Tissues, Mohamed Mahmoud, Mahmood Norouzi, Adonis Amoli, Sheng Su, Christina You, Yan Zhang, Isabelle Knighton, Athar Ata, Thomas Werner, Haiying Liu

Michigan Tech Research Data

We designed and synthesized two novel ratiometric near-infrared fluorescent probes, probe A and probe B, tailored for sensitive detection of intracellular viscosity and human serum albumin (HSA) dynamics. Probe A integrates a coumarin donor with a cyanine acceptor to enable ratiometric fluorescence changes upon HSA binding, exhibiting increased visible emission and decreased near-infrared fluorescence. Probe B is engineered with a hemicyanine scaffold that responds to viscosity changes by enhancing visible fluorescence and moderately increasing near-infrared emission, allowing precise ratiometric sensing of microenvironmental viscosity. Both probes show excellent selectivity against biologically relevant amino acids, metal ions, and anions, and exhibit …

Reconstruction Of Information System Acceptance Model In The Era Of Integrated Artificial Intelligence: A Systematic Literature Review, Ilham, Merlin Apriliyanti

Library Philosophy and Practice (e-journal)

This study aims to explain the rapid development of Artificial Intelligence (AI) which has driven significant transformations in the development and use of information systems. However, most classical information system acceptance models, such as the Technology Acceptance Model (TAM) and  (UTAUT), have not been able to fully explain the unique characteristics of AI-based systems that are autonomous, adaptive, and complex. This study aims to reconstruct the information system acceptance model in the era of integrated AI through a Systematic Literature Review (SLR) approach. This study was conducted using the PRISMA protocol on 130 leading scientific articles indexed by Scopus and …

A Pretraining-Based Framework For On-Device Training Of Imu-Based Locomotion Mode Detection For Wearable Active Exoskeletons, Muhammad Tahir Khan

LSU Master's Theses

Active exoskeletons are being developed to support human movement in physically demanding industries such as construction. For these systems to work effectively, they must be able to correctly identify the user’s current activity. This process is known as locomotion mode detection and plays an important role in selecting the appropriate control parameters for exoskeletons. Many existing approaches use inertial measurement units (IMUs) to recognize these activities and have shown strong performance. However, most of these methods depend on large amounts of labeled data collected under specific conditions. As a result, they often do not perform well when applied to new …

Novel Electrical Interfaces For Bionic Limbs, Matthew Aaron Melton

USF Tampa Graduate Theses and Dissertations

Advancements in neural interfaces are pivotal for enhancing the functionality and longevity of implantable biomedical applications, particularly in the field of neuroprosthetics. This dissertation is focused on the continuing development of a novel neural interface fabricated from silicon carbide (SiC). SiC has demonstrated superior performance over traditional silicon-based material systems due to its exceptional biocompatibility, hemocompatibility, and electrochemical stability. The research herein explores silicon carbide’s semiconductor properties, with a highlighted focus on a unique and innovative design structure - centered around a p-n junction. This work examines detailed fabrication steps of an all-SiC device, acute-style packaging (for future in vivo …

In The Realm Of Dreams: The Feminine Imagination In Music, Katie Scarlett Ellender

LSU Doctoral Dissertations

This project examines selected works by Clara Schumann, Rebecca Clarke, and Lili Boulanger that contain representations of night, dream, and mythology. These composers were influenced by the prevailing artistic movements during their lives, including German Romanticism, Impressionism, and Symbolism, which emphasized nocturnal landscapes, supernatural beings, and liminal states. Descriptive analysis and performance recommendations are provided for selected Lieder by Clara Schumann, Rebecca Clarke’s Morpheus, and Lili Boulanger’s Nocturne. Particular emphasis is given to how each composer uses night, dream, and myth imagery as expressive frameworks that inform decisions on harmonic language, level of cadential resolution, motivic repetition and transformation, texture, …

Wearable Sensor System Used To Measure Linear And Angular Acceleration Of The Head Of American Football Players, David A. Emerson

LSU Master's Theses

American football players are repeatedly subject to high-velocity impacts; collisions can exceed 100 g in the NFL [1]. Rotational accelerations of the head caused by high-velocity collisions have been proven to be extremely damaging to the highly organized brain fibers at the brain-skull interface [2]. The sensor system (SS) measures the nonplanar acceleration at four locations on a chin strap using ADXL314 accelerometers and utilizes rigid-body kinematics to estimate the head rotational state from the measured acceleration of the SS [3]. The SS was validated through progressive testing, including steady-state, linear impact, and rotational impact testing. The ADLX314 sensor exhibited …

Sweep Angle Effects Of Flow Over A Seal Whisker-Inspired Undulated Cylinder, Trevor Dunt, Christin T. Murphy, Ondrej Fercak, Raúl Bayoán Cal, Jennifer A. Franck

Mechanical and Materials Engineering Faculty Publications and Presentations

Flow over a seal whisker-inspired undulated cylinder at swept back angles is computationally investigated, comparing the vortex shedding, forces, and wake characteristics to those of an equivalent smooth geometry. Numerous prior studies have demonstrated that undulated cylinders can reduce mean drag and unsteady lift oscillations; however, none have isolated the effects of the sweep angle resulting from whisker positioning in flow. Inspired by the active control seals exert over their whiskers while navigating and sensing in unsteady aquatic environments, this study investigates how such orientation influences the hydrodynamic performance of the geometry. Simulations are performed of flow across a rigid, …

Faculty-Student Collaboration In Iterative Course Design, Sarah Mcdavitt

Undergraduate Honors Theses

Typically, the only way for a professor to receive feedback on their course design is through running several iterations of a class across multiple semesters. This guide aims to establish an avenue for accelerated course design testing through faculty-student collaboration before it rolls out live for enrolled students. Using the design thinking framework and other human-centered design principles, faculty members collaborating with students can iterate course design elements to discover opportunities to enhance the learning experience. As they draw evidence-based conclusions from empathy data, accurately define objectives, ideate new solutions, prototype course element ideas, and test the prototypes with a …

Software-Defined Radios In Avalanche Detection, Andrew Mcdonald

Undergraduate Honors Theses

This thesis explores the use of software-defined radios (SDRs) to develop a low-cost radar system for avalanche detection. Avalanches are a significant danger in mountainous locations and existing systems are often difficult or expensive to use. This research assesses if commercially available SDRs can be used to create a radar system capable of detecting moving targets and accurately measuring distance. A frequency-modulated contiuous-wave (FMCW) radar was implemented using the LimeSDR-Mini and the USRP B210. Signal generation, data collection, and processing all are performed in software, enabling easy configuration. Improvements to data transfer methods for the LimeSDR-Mini reduced sampling errors and …