Digital Commons Network^™

Wet-Carbonation Of Rcas For Improved Carbonation Efficiency And Mechanical Properties Of Carbonated Rcas And Rca Concrete, Xiang Zhao, Qingli Dai, Jiankai Xie

C3 Symposium 2025

The increasing volume of construction and demolition waste (C&DW) poses significant environmental challenges, making its effective management and treatment crucial. Recycled coarse aggregates (RCA), derived from C&DW, often exhibit weak interfacial transition zones (ITZ), high porosity, and micro-cracks due to residual mortar, limiting their structural performance [1] [2]. This study developed a novel wet carbonation process using glycine acid as an inducer to enhance the mechanical and durability properties of RCA and RCA concrete. Glycine acid, with carboxyl and amino functional groups, formed stable complexes with Ca²⁺ ions, increasing calcium solubility and accelerating carbonation[3]. The process promoted the formation of …

Change In Property Of Hardened Cement Specimens Having Different Mineral Composition Cured In High Concentration Co2 From The Very Early Material Age, Kazuto Tabara, Kazuya Yamashita, Hiroyuki Kameda, Shintaro Miyamoto

C3 Symposium 2025

We conducted research of CO2 capture behavior and rate of CO2 diffusion into hardened cement specimens of different pre-curing period before starting accelerating carbonation curing for ordinary portland cement (herein after OPC), OPC mixed with ground granulated blast furnace slag (herein after BB), and OPC mixed with an amorphous calcium aluminate-based accelerator (hereinafter ACC) respectively. We prepared two-type of hardened cement specimens, the first was in the case of powder shape hardened cement paste specimen which is designed to avoid carbon dioxide diffusion’s influence as much as possible and to evaluate fixation capacity of CO2, as a result CO2 content …

Experimental Study Of Mineral Carbonation Of High-Calcium Fly Ash: Co₂ Sequestration And Its Effect On Pozzolanic Reactivity, Farshad Rajabipour, Arslan Akbar, Abdullah Al Moman

C3 Symposium 2025

Mineral carbonation of industrial wastes offers a sustainable approach to carbon sequestration and waste valorization. This study investigates the aqueous mineral carbonation of three high-calcium fly ashes under ambient conditions using recyclable sodium carbonate solutions. The effects of operational parameters, including liquid-to-solid ratio (L/S), sodium carbonate concentration, and carbonation duration, were systematically analyzed using response surface modeling. A degree of carbonation (DOC) up to 52% was achieved within one hour under ambient conditions, with calcite (CaCO3) identified as the dominant product phase. Advanced characterization techniques revealed significant transformations in the physicochemical properties of carbonated fly ashes (CFAs), including increased particle …

Engineering Performance Of Semi-Flowable Concrete With High-Volume Indigenous Scms, Arash Aghaeipour, Jingjie Wei, Kamal H. Khayat, Roberta Alfani, Erisa Myrtja

C3 Symposium 2025

Enhancing clinker efficiency and increasing limestone filler (LF) in binder are essential for engineering applications. This study explores the high-volume substitution of Portland cement, with 50 wt.% LF and up to 30 wt.% traditional SCMs, in semi-flowable concrete (SFC), evaluating properties of SFC. A slump of 200 mm was achieved, with retentions above 130 mm after 70 minutes for SFC mixtures. The 28-day compressive and flexural strengths of SFC exceeded 30 MPa and 3.2 MPa, respectively, meeting structural performance benchmarks (ACI 318, ASTM C94). LF replacement rate in binder exceeding 10% reduces strength of SFC due to LF’s lack of …

Performance Of Low-Clinker, High-Limestone Multiphase Blended Cement, Muhammad Haris Javed, Jingjie Wei, Kamal H. Khayat, Roberta Alfani, Erisa Myrtja, Hongyan Ma

C3 Symposium 2025

This study evaluates mechanical properties and porosity of binders combining Portland Limestone Cement (PLC) with SCMs like GGBFS, Class C (FAC), and Class F (FAF) fly ashes. GGBFS-based binders showed the highest compressive strength of 33.35MPa and lowest porosity (of 41.9%) due to their high reactivity, while FAF-based binders had lower strength and higher porosity (of 14.5 MPa and 47.3%), due to slower pozzolanic reactions. SCM combinations balanced reactivity and densification, offering a pathway for sustainable, high-performance binder development.

Ca/Si-Dependent Size Of Silica Nanoparticles Derived From C-S-H At High Water To Solid Ratio, Binmeng Chen, Zongjin Li

C3 Symposium 2025

In recycling and reusing construction waste, carbonation of recycled concrete fine (RCF) has been successfully applied to produce value-added products, such as silica nanoparticles, via the breaking of calcium silicate hydrate (C-S-H) structure and condensation of silicate chains. However, the intricacies of carbonation of RCFs with varying calcium-silicon (C/S) ratios and their implications on the size of generated silica nanoparticles remains unknown. In this work, we developed an optimized carbonation method at high water to solid ratio to fabricate silica nanoparticles from C-S-H with different C/S ratios. The particle size of silica nanoparticles was found to gradually decrease with the …

Microstructure Evolution Of Alite In-Situ Carbonated By Aminated Mesoporous Silica Nanoparticles, Yuyang Zhao, Binmeng Chen

C3 Symposium 2025

Given that CO2 chamber and high inner pressure are needed in the traditional carbonation curing, we propose an in-situ internal carbonation by aminated mesoporous silica nanoparticles (MSNs) to tackle the challenge due to its high specific surface area. In this study, phase transformation and nucleation behavior were investigated by in-situ carbonation of alite paste with MSNs-amine absorbing CO2 (MSNs-amine-AC) and MSNs-amine desorbing CO2 (MSNs-amine-DC), separately. C-S-H with low Ca/Si ratio and negative electric potential is formed when MSNs-amine-DC is gradually eroded, wrapped and collapsed, converting to reaction sites chemically. On the contrary, ACC generated in MSNs-amine-AC blocks the mesopores, retard …

X-Ray Microcalorimeter Observations Of High-Mass X-Ray Binaries With The Resolve Instrument Onboard Xrism, Pragati Pradhan, Masahiro Tsujimoto

Publications

The X-ray Imaging and Spectrometer Mission (XRISM) was put into orbit successfully in September 2023. Resolve, one of the scientific instruments onboard XRISM, hosts an X-ray spectrometer based on X-ray microcalorimetery technology. It excels in high spectral resolution, a large throughput, a large bandpass, low background, and good timing accuracy. These properties are suited to bring new insights especially in high-mass X-ray binaries (HMXB). We describe these unique features of Resolve and present initial highlights of two HMXB sources.

The Giant Outburst Of Exo 2030+375, P. Thalhammer, R. Ballhausen, E. Sokolova-Lapa, J. Stierhof, A. Zainab, R. Staubert, K. Pottschmidt, J.B. Coley, R.E. Rothschild, G.K. Jaisawal, B. West, P.A. Becker, Pragati Pradhan, P. Kretschmar, J. Wilms

Publications

The Be X-ray binary EXO 2030+375 went through its third recorded giant outburst from June 2021 to early 2022. We present the results of both spectral and timing analysis based on NICER monitoring, covering the 2−10 keV flux range from 20 to 310 mCrab. Dense monitoring with observations carried out about every second day and a total exposure time of ∼160 ks allowed us to closely track the source evolution over the outburst. Changes in the spectral shape and pulse profiles showed a stable luminosity dependence during the rise and decline. The same type of dependence has been seen in …

The First Sale Doctrine For The Digital Age, Ethan Thomas

Journal of Intellectual Property Law

For well over a century consumers have long enjoyed the ability to resell, gift, lend, or otherwise transfer their legally purchased copyrighted media. First established in common law and later codified into the Copyright Act of 1976 the first sale doctrine granted the right of transfer to consumers. In 2013, a district court held that the first sale doctrine does not let consumers transfer digital media through file sharing. Instead, a consumer must sell the object the media was downloaded onto. This decision effectively gutted the first sale doctrine’s application to digital media. Further reducing the reach of the first …

Paws Off My Image: Why Rights Of Publicity Should Be Expanded, Lauren Didelot

Journal of Intellectual Property Law

In our increasingly digital world, exposure to fame and fortune has become more accessible than ever, and many pet owners have taken advantage of this. The rise of “petfluencers” has called into question the extent of available rights of these celebrity animals’ owners to protect and maintain their pet’s commercial value, thus preventing instances of unfair enrichment from other’s exploitation of their beloved animals. This Note argues for the acceptance of an animal’s right of publicity. We begin with an exploration of the right of publicity itself and its current applications. Next, we will discuss the intellectual property rights currently …

You Wanted The Best? You Got The Best! If You Can Pay For It... Antitrust Considerations And Artist-Based Solutions For Lower Concert Ticket Prices, Jake Farbman

Journal of Intellectual Property Law

The live music industry has become increasingly inaccessible to fans as ticket prices continue to rise under the dominance of Live Nation Entertainment and Ticketmaster. Since their controversial 2010 merger, the two companies have consolidated control over both the primary and secondary ticketing markets, fostering anticompetitive practices that allegedly include exclusive venue agreements, coercive bundling of promotion and ticketing services, and dynamic pricing schemes. These practices have drawn widespread scrutiny from lawmakers, regulators, artists, and consumers alike, culminating in the Department of Justice’s 2024 antitrust lawsuit seeking to break up the conglomerate.

This Article traces the historical development of the …

Dilemmas And Prospects Of Infectious Disease Prevention In Long-Term Care: A Qualitative Study, Po-Jen Kung, Ching-Min Chen, Nancy Reynolds

International Nursing Research Congress (INRC)

Aim: To explore the experiences of long-term care workers in preventing emerging infectious diseases, the challenges they faced during the pandemic, and how they were addressed.

Design: This study used an exploratory qualitative research design.

Methods: The study involved various long-term care institutions across Taiwan. Twelve interviewees, including four nurses, four nursing assistants, and four managers, were recruited via purposive sampling. All interviewees worked in the sector during the COVID-19 pandemic, were actively involved in clinical care or institutional management, and were proficient in Mandarin. In-depth interviews were conducted face-to-face between July and August 2024, and data …

The Unaltered Pulsar: Gro J1750-27, A Supercritical X-Ray Neutron Star That Does Not Blink An Eye, C. M. Malacaria, L. Moritz Ducci, M. Falanga, D. A. Altamirano, E. Bozzo, S. J. Guillot, G.K. Jaisawal, P. Kretschmar, M. Ng, Pragati Pradhan, R. Rothschild, A. Sanna, P. Thalhammer, J. Wilms

Publications

When accreting X-ray pulsars (XRPs) undergo bright X-ray outbursts, their luminosity-dependent spectral and timing features can be analyzed in detail. The XRP GRO J1750-27 recently underwent one such episode, during which it was observed with NuSTAR and monitored with NICER. Such a data set is rarely available, as it samples the outburst over more than 1 month at a luminosity that is always exceeding ∼5 × 1037 erg s−1 . This value is larger than the typical critical luminosity value, where a radiative shock is formed above the surface of the neutron star. Our data analysis of the joint spectra …

Determining The Light Curve And 3d Shape Of Asteroid Eunomia And Egeria Using Relative Photometry, Skylar G. Butler, Jackson Ladd Sackrider

Discovery Day - Daytona Beach

Asteroids are relics of our solar system’s early formation, preserving valuable information about planetary evolution. Understanding their rotational properties and surface features provides deeper insights into the dynamical and thermophysical processes that shape their evolution. This study aims to conduct photometric observations of two main-belt asteroids, Egeria and Eunomia, using the Embry-Riddle Aeronautical University 1-meter telescope. Observations will be conducted in the red band on February 28 and March 14, 2025, over five-hour sessions, capturing full rotational light curves for each asteroid. These data will be analyzed using MPO Canopus to generate 3D surface models through photometric inversion techniques. The …

Effectiveness Of An Adapted Physical Activity Program On Anxiety, Depression, And Self-Esteem On A Heterogenous Sample: A Randomized Controlled Trial, Mathilde Plard, Claire El Jor, Rebecca Shankland, Quentin Hallez

Baltic Journal of Health and Physical Activity

In recent decades, numerous studies have demonstrated the effectiveness of Adapted Physical Activity (APA) interventions in improving the mental health of individuals. However, a limitation of these studies is their predominant focus on homogeneous groups, characterized by similar diseases or disorders and characteristics. Thus, effects associated with these groups may largely account for the observed benefits, rather than the physical activity itself. This study aimed to investigate the impact of an eight-week APA intervention on anxiety, depression, and self-esteem in a heterogeneous group of participants with diverse health conditions and ages. Participants were randomly assigned to either an experimental group …

2025 17th Annual Student Center For Science Engagement Research Symposium, Student Center For Science Engagement

Student Center for Science Engagement Research Symposium

Student presentations in Biology, Chemistry, Physics, Earth Science, Environmental Science, Computer Science, Mathematics, & Psychology

A Method And A System For Predicting E-Commerce Consumer Return Risks And Behavior Analysis, Ishika Ahuja, Hema Lakshmi K M, Kireeti Kesavamurthy, Bhuvanjeet Singh Gandhi

Defensive Publications Series

The present disclosure relates to a system and method for managing e-commerce return and refund risks by utilizing a comprehensive data aggregation module that collects information metrics from multiple e-commerce platforms using a unique identifier. The user's purchase profile is generated through a user profiling component leveraging Visa ID to link all active identification identifiers. A risk assessment engine computes various risk indicators based on historical purchasing behaviors, including sales-to-refund ratios and fraud signals. Furthermore, the system includes a dashboard interface that presents comparative metrics, allowing merchants to analyze consumer behavior against a broader consumer base. This structured approach facilitates …

The Wall Of Language And Voice Centesis: Also On Lacan's View Of Voice, Juanjuan Ye

Theoretical Studies in Literature and Art

Lacan identified the voice as an independent dimension from one's mutism by backward induction. He marked the object a with mutism, thus exposing the symbolic rift in the unsymbolized real. The language system builds a wall between the subject and the other, which impedes the actual expression of one's will. However, in the structural sense, obstacles also imply the possibility of future solutions. Compared with the obstruction resulting from the wall of language, voice can overcome the barrier between subjects and confirm each other's existence as well as intervene the plights of the subject through its presence of “listening.” The …

Panel 3 - Sovereignty In The Age Of Digitalization, Ken Klassen, Yariv Brauner, Ivan Ozai, David Duff

A. Cockfield Memorial Symposium

Chair: Ken Klassen (University of Waterloo)

Yariv Brauner (University of Florida), When Things Break Down: Taxing the Digital Economy in an Even Less Cooperative World

Ivan Ozai (Queen’s University), Taxing Decentralized Governance

David Duff (University of British Columbia), Globalization, Digitalization, and Individual Taxation

Commentators: Lori McMillan (Washburn University); Shay Menuchin (KPMG)

The Calvin University Math Department History 1920-2020, Michael Stob

University Histories

No abstract provided.

Controlling Private Economic Power: Lessons Learned From The Us Experience In The First Decades Of The 20th Century, Thierry Kirat, Frédéric Marty

Yearbook of Antitrust and Regulatory Studies

Concerns related to Big Techs have led to a proliferation of legislative initiatives to complete competition rules with regulatory devices that would lead gatekeepers to be subject to obligations to preserve an equality of opportunities on the market. Within this context, this contribution revisits American decision-making practice from the end of the 19th century and the beginning of the 20th century to show how regulatory-type interventions and the enforcement of competition rules have been activated to control the strategies of firms acting as gatekeepers. What we can learn from this experience is that a big firm having private regulatory power …

Sga 57 Senate 2025-09-26 Minutes, Niu Student Government Association Senate

Student Government Association Archives

No abstract provided.

Sga 57 Senate 2025-09-26 Agenda, Niu Student Government Association Senate

Student Government Association Archives

No abstract provided.

Rethinking Pain Relief After Surgery: What We Can Learn From Knee Replacements, Asim Trimzi

SKMC Student Presentations and Publications

This paper offers a clear, evidence-based look at how we can reduce opioid use after knee replacement surgery without sacrificing pain relief. This review focuses specifically on total knee arthroplasty (TKA)-one of the most commonly performed and most painful surgeries-and asks whether opioids are truly necessary. By analyzing results from 21 clinical trials, the paper shows that non-opioid medications like NSAIDs and gabapentinoids can provide similar pain control with fewer side effects, such as nausea, dizziness, constipation, and sedation. Lower risk of long-term use is an added benefit. A recent RCT found that after knee/shoulder arthroscopy, 72% of patients in …

Wmu Maritime Affairs Conference 2025 : Transforming A Maritime Future : Digitalization And Decarbonization, World Maritime University

Books

No abstract provided.

Energy Statistic-Based Goodness-Of-Fit Test For The Lindley Distribution With Application To Lifetime Data, Joseph Njuki, Ryan Avallone

Mathematics and Statistics

In this article, we propose a goodness-of-fit test for a one-parameter Lindley distribution based on energy statistics. The Lindley distribution has been widely used in reliability studies and survival analysis, especially in applied sciences. The proposed test procedure is simple and more powerful against general alternatives. Under different settings, Monte Carlo simulations show that the proposed test is able to be well controlled for any given nominal levels. In terms of power, the proposed test outperforms other existing similar methods in different settings. We then apply the proposed test to real-life datasets to demonstrate its competitiveness and usefulness.

This article …

Fungal Palynomorphs From The Lower Cretaceous (Berriasian–Albian) Of Jangareddygudem Area Of The Chintalapudi Subbasin, Andhra Pradesh, South Part Of India, Harinam Joshi, Neerja Jha, Sarah Gonçalves Duarte, Sari̇ye Duygu Durak, Haytham Elatfy

Turkish Journal of Earth Sciences

A diverse array of thalli, fruiting bodies, spores, and other fungal structures has been observed in palynological samples collected from the sedimentary sequence MJR-11, drilled in the Jangareddygudem area of the Chintalapudi subbasin, Andhra Pradesh, southern India. The sedimentary sequence is dated to the Kimmeridgian–early Albian, based on palynology. However, the focus of the present work is on the Early Cretaceous (Berriasian–early Albian). A well-developed and diverse fungal assemblage consistently occurred throughout most of the succession, together with predominant conifer pollen grains and highly diversified pteridophytic and bryophytic spores. Furthermore, the recorded palynomorphs suggest deposition under both continental and marine …

Fault Morphology Along A Sinistral Active Fault Near A Continental Triple Junction: The Ilıca Segment At The Northern Termination Of The East Anatolian Fault Zone, Türkiye, Aynur Di̇kbaş, Hani̇fe Merve Önal

Turkish Journal of Earth Sciences

The East Anatolian fault zone (EAFZ) is an approximately 430 km long sinistral transform fault that bounds the southwestern margin of the Anatolian microplate between Karlıova (Bingöl) and Kahramanmaraş. It constitutes part of the Karlıova triple junction (KTJ) in eastern Anatolia. Near the KTJ, the Ilıca and Karlıova segments delineate the EAFZ. The Ilıca segment, approximately 38 km long, exhibits distinct fault-related geological structures, including linear valleys, elongated ridges, saddles, sag ponds, shutter ridges, thermal springs, and travertines. Based on extensive mapping using high-resolution imagery and field investigations, the Ilıca segment has been categorized into three sections: section 1 and …

First Insights Into The Origin Of Iron In Eastern Cilicia During The Iron Age, Using Osmium Isotope And Trace Element Analysis, Ivan Stepanov, Hüseyi̇n Öztürk, Michael Brauns, Ernst Pernicka, Nurullah Hanilçi, Ümi̇t Güder

Turkish Journal of Earth Sciences

Due to the abundance of ore resources and the probable technological advances of the Hittite civilisation, the Anatolian plateau is conventionally regarded as “the birthplace” of iron smelting technology. The present paper presents a complex archaeometric investigation of iron production remains from the Middle and Late Iron Age phases (c. 750–575 BC) at Kinet Höyük, a major trading port on the coast of eastern Cilicia (modern-day Dörtyol, Hatay). To provide an initial insight into the sources of iron processed at Kinet Höyük and to generate an overview of the 187Os/188Os and 187Re/188Os isotope ratios expected from eastern Anatolian iron ores, …