Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Law (432028)
- Social and Behavioral Sciences (403910)
- Arts and Humanities (290276)
- Education (235199)
- Medicine and Health Sciences (203602)
-
- Life Sciences (117167)
- Physical Sciences and Mathematics (115703)
- History (114616)
- Business (107508)
- Engineering (82965)
- Higher Education (77739)
- Communication (73621)
- Sociology (65471)
- Public Affairs, Public Policy and Public Administration (63152)
- Public Health (55757)
- Library and Information Science (53181)
- Religion (50278)
- Medical Specialties (46154)
- United States History (45983)
- Psychology (45525)
- Journalism Studies (35094)
- Political Science (34577)
- Accounting (34266)
- Mass Communication (32987)
- Economics (32916)
- Social History (31754)
- Educational Administration and Supervision (31427)
- Environmental Sciences (30776)
- Computer Sciences (30112)
- Constitutional Law (29666)
- Institution
-
- University of New Mexico (85733)
- University of Montana (66870)
- University of Mississippi (65979)
- University of South Florida (62448)
- University of New Hampshire (62223)
-
- University of Nebraska - Lincoln (60132)
- Utah State University (47144)
- Brigham Young University Law School (42635)
- University of Colorado Law School (35099)
- Georgia Southern University (32676)
- Brigham Young University (31009)
- San Jose State University (27891)
- University of Central Florida (27572)
- Eastern Illinois University (26948)
- California Polytechnic State University, San Luis Obispo (26528)
- University of Kentucky (26340)
- Murray State University (26132)
- University of North Dakota (23650)
- Washington University School of Medicine (23292)
- University of Dayton (22816)
- Purdue University (21929)
- Louisiana State University (21667)
- City University of New York (CUNY) (20681)
- Western Michigan University (20599)
- Western Kentucky University (19834)
- The Texas Medical Center Library (18790)
- University of Michigan Law School (18685)
- Portland State University (18428)
- University of South Carolina (18386)
- Walden University (18112)
- Keyword
-
- Newspaper (44672)
- Press release; media release; press statement; news media information (30839)
- Humans (22219)
- Education (21095)
- Student newspaper (17997)
-
- Newspapers (16985)
- History (16607)
- United States (13851)
- Newsletter (13251)
- COVID-19 (12271)
- Spartan Daily (12028)
- Higher education (11729)
- EIU (11368)
- Bowling Green State University (11262)
- Female (10856)
- Faculty (10156)
- Michigan (9902)
- Latin America (9789)
- Students (9603)
- Eastern Illinois University (9577)
- Pennsylvania (9571)
- Daily Eastern News (9423)
- Periodicals (9156)
- Male (9147)
- Spanish (9044)
- Collegeville (8872)
- BG News (8848)
- Student newspapers (8472)
- University of New Mexico (8455)
- Western Kentucky University (8421)
- Publication Year
-
- 2026 (61743)
- 2025 (88450)
- 2024 (100833)
- 2023 (91557)
- 2022 (93188)
-
- 2021 (96120)
- 2020 (93687)
- 2019 (90673)
- 2018 (89346)
- 2017 (88560)
- 2016 (87781)
- 2015 (82207)
- 2014 (76988)
- 2013 (73853)
- 2012 (73439)
- 2011 (62360)
- 2010 (59804)
- 2009 (55799)
- 2008 (51277)
- 2007 (46412)
- 2006 (44817)
- 2005 (40978)
- 2004 (38311)
- 2003 (35540)
- 2002 (33796)
- 2001 (32118)
- 2000 (30978)
- 1999 (28230)
- 1998 (27622)
- 1997 (26656)
- Publication
-
- Theses and Dissertations (50449)
- University of Montana News Releases, 1928, 1956-present (30909)
- Faculty Publications (27303)
- Electronic Theses and Dissertations (21005)
- Faculty Scholarship (20598)
-
- Dissertations (17906)
- Walden Dissertations and Doctoral Studies (16608)
- Articles (14209)
- Session Laws 1951-2000 (13139)
- Open Access Publications (11655)
- Theses (11544)
- Spartan Daily (School of Journalism and Mass Communications) (11107)
- Daily Mississippian (all digitized issues) (10882)
- Masters Theses (10074)
- Documents (9842)
- Montana Kaimin, 1898-present (9454)
- Faculty, Staff and Student Publications (9450)
- African American Funeral Programs (9159)
- BG News (Student Newspaper) (8960)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (8856)
- Michigan Law Review (8523)
- Utah Supreme Court Briefs (1965 –) (8082)
- Santa Fe New Mexican, 1883-1913 (8047)
- Master's Theses (7957)
- Honors Theses (7651)
- 2020-Current year OA Pubs (7493)
- WKU Administration Documents (7412)
- News Releases (7291)
- USF Tampa Graduate Theses and Dissertations (7079)
- Doctoral Dissertations and Projects (7067)
- Publication Type
Articles 39961 - 39990 of 2916659
Full-Text Articles in Entire DC Network
Divergent Patterns Of Probabilistic Reasoning In Humans And Gpt-5, Pegah Imannezhad, Emmanuel M. Pothos, Andy J. Wills
Divergent Patterns Of Probabilistic Reasoning In Humans And Gpt-5, Pegah Imannezhad, Emmanuel M. Pothos, Andy J. Wills
School of Psychology
Large Language Models (LLMs) such as GPT‑5 are increasingly consulted for advice across a wide range of domains, yet little is known about how their probability judgments compare to those of humans. This study examined GPT‑5’s adherence to classical probability rules, focusing on conjunction fallacies, disjunction fallacies, and violations of binary complementarity. Using a large dataset on human probabilistic judgments, in which participants displayed multiple types of fallacies, we tested GPT‑5 on the same task and with matched participant profiles. GPT‑5 produced only single conjunction or disjunction fallacies and showed near‑perfect compliance with binary complementarity constraints. Its overall response pattern …
Spartan Daily, March 3, 2026, San Jose State University, School Of Journalism And Mass Communications
Spartan Daily, March 3, 2026, San Jose State University, School Of Journalism And Mass Communications
Spartan Daily, 2026
Volume 166, Issue 17
Sex-Related Differences In Clinical Profile, Management, And Outcomes Of Patients With Type A And B Acute Aortic Dissection: Observations From Irad, Elizabeth Jackson, Andreina Carbone, Sherene Shalhub, Chih-Wen Pai, Marek Ehrlich, Toru Suzuki, G Chad Hughes, Anil Bhan, Rumi Faizer, Antonio Cittadini, Alan Braverman, Eric Isselbacher, Kim Eagle, Christoph Nienaber, Eduardo Bossone
Sex-Related Differences In Clinical Profile, Management, And Outcomes Of Patients With Type A And B Acute Aortic Dissection: Observations From Irad, Elizabeth Jackson, Andreina Carbone, Sherene Shalhub, Chih-Wen Pai, Marek Ehrlich, Toru Suzuki, G Chad Hughes, Anil Bhan, Rumi Faizer, Antonio Cittadini, Alan Braverman, Eric Isselbacher, Kim Eagle, Christoph Nienaber, Eduardo Bossone
2020-Current year OA Pubs
BACKGROUND: Available data about sex differences in patients with acute aortic dissection (AAD) are scant and conflicting. The aim of this study is to assess sex-related differences in clinical characteristics, presentation, diagnostic findings, management, and outcomes among patients with type A (TA-AAD) and type B AAD (TB-AAD).
METHODS: Data about 11 586 patients enrolled in the IRAD (International Registry of Acute Aortic Dissection) from 1996 to 2022, were analyzed; 7819 (67.5%) experienced TA-AAD and 3867 (33.0%) TB-AAD. Men and women were compared with regard to diagnosis, treatment, and in-hospital and long-term survival.
RESULTS: One third of patients were women (TA-AAD, …
Exploring The Role Of Social Networks In Youth Mental Health, Nicholas Szoko, Alexander Riley, Jacquelin Rankine, Alison J Culyba
Exploring The Role Of Social Networks In Youth Mental Health, Nicholas Szoko, Alexander Riley, Jacquelin Rankine, Alison J Culyba
2020-Current year OA Pubs
Social network analysis (SNA) offers an innovative approach to understand youths' complex social support systems. Growing work highlights links between youths' social networks and mental health. We used SNA to examine associations between social network characteristics and psychological empowerment, depression, anxiety, and post-traumatic stress among youth living in areas with concentrated disadvantage. We administered egocentric social network surveys in which youth (i.e., egos) enumerated individuals in their social network (i.e., alters), answered questions about each alter, and described how alters were connected. We measured psychological empowerment and mental health symptoms with validated instruments. There were 111 youth in the analytic …
Maler An Der Wand. Fra Bartolomeo Und Giuliano Bugiardini, Péter Bokody
Maler An Der Wand. Fra Bartolomeo Und Giuliano Bugiardini, Péter Bokody
School of Law, Humanities and Social Sciences
No abstract provided.
Comparative Antibacterial Efficacy Of Povidone-Iodine, Citric Acid, And Starch: A Study Of Combined Activity And Interference Effects Against Clinically Relevant Bacteria, Falah Hasan Obayes Al-Khikani, Mustafa Mutar Trrad, Ali Abedulameer Alhusayni
Comparative Antibacterial Efficacy Of Povidone-Iodine, Citric Acid, And Starch: A Study Of Combined Activity And Interference Effects Against Clinically Relevant Bacteria, Falah Hasan Obayes Al-Khikani, Mustafa Mutar Trrad, Ali Abedulameer Alhusayni
AUIQ Complementary Biological System
Povidone-iodine and citric acid are widely used antimicrobial agents. However, data on their comparative efficacy and the functional outcomes of their combination, particularly regarding the influence of common excipients like starch, is limited. Understanding these interactions is crucial for optimizing antiseptic formulations. This study aimed to evaluate and compare the antibacterial activity of povidone-iodine, citric acid (5% and 20%), and starch (5% and 20%), both individually and in combination, against clinical isolates of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. The antibacterial activity of the agents was assessed using an agar well diffusion assay. Mean inhibition zone …
Masalah Pengungsi Ditinjau Dari Segi Hukum Internasional Publik, Sri Setianingsih Suwardi
Masalah Pengungsi Ditinjau Dari Segi Hukum Internasional Publik, Sri Setianingsih Suwardi
Jurnal Hukum & Pembangunan
Abstract
Hak Untuk Menentukan Nasib Sendiri Dalam Hukum Internasional Publik, D. Sidik Suraputra
Hak Untuk Menentukan Nasib Sendiri Dalam Hukum Internasional Publik, D. Sidik Suraputra
Jurnal Hukum & Pembangunan
Abstract
Integrated Simulation-Based Optimisation Of Rocket Launch Dynamics For Enhanced Fuel Efficiency And Payload Precision, Syahir Amzar Zulkifli, Rizalman Mamat, Erdiwansyah Erdiwansyah, S. M. Rosdi, Ahmad Tamimi, Ahmad Fitri Yusop
Integrated Simulation-Based Optimisation Of Rocket Launch Dynamics For Enhanced Fuel Efficiency And Payload Precision, Syahir Amzar Zulkifli, Rizalman Mamat, Erdiwansyah Erdiwansyah, S. M. Rosdi, Ahmad Tamimi, Ahmad Fitri Yusop
Terra Joule Journal
Precision in launch dynamics and trajectory optimisation is critical for enhancing mission success, fuel efficiency, and payload capacity in modern aerospace operations. This study aims to develop and validate a high-fidelity, simulation-based framework for optimising rocket ascent trajectories, providing a cost-effective, scalable alternative to extensive physical testing. The methodology integrates ANSYS Fluent for aerodynamic and thermal load modelling, MATLAB/Simulink for dynamic control system simulation, and General Mission Analysis Tool (GMAT) for orbital trajectory planning, enabling a multi-domain approach that accounts for thrust vectoring, aerodynamic drag, stage separation, and environmental disturbances. Optimisation algorithms, the Genetic Algorithm (GA) and Particle Swarm Optimisation …
Intelligent Fault Diagnosis Of Ev Induction Motors Using Multi-Sensor Ann And Explainable Ai For Sustainable Transportation, Royal Madan, Ahmed Ali Farhan Ogaili
Intelligent Fault Diagnosis Of Ev Induction Motors Using Multi-Sensor Ann And Explainable Ai For Sustainable Transportation, Royal Madan, Ahmed Ali Farhan Ogaili
Terra Joule Journal
Maintaining the dependability and operational continuity of electric vehicle (EV) drivetrains has become crucial as the world's shift to electrified transportation picks up speed. This is a major obstacle for sustainable mobility. Using a high-capacity Artificial Neural Network (ANN), this study presents a data-driven multi-sensor framework for advanced fault diagnosis of induction motors in EV applications. The publicly available University of Ottawa dataset that encompasses nine distinct fault categories and 180 test samples was utilized to replicate both mechanical failure modes (e.g., broken rotor bars, bearing defects, rotor misalignment) and electrical anomalies (e.g., stator winding faults, voltage imbalance) under constant …
Movement And Momentum, V. 45, Carissa Dicindio
Movement And Momentum, V. 45, Carissa Dicindio
Journal of Social Theory in Art Education
No abstract provided.
Art Intervention In A Time Of Momentum: A Transformative Pedagogy On Immigration In Undergraduate Art Education, Marissa A. Gutierrez-Vicario
Art Intervention In A Time Of Momentum: A Transformative Pedagogy On Immigration In Undergraduate Art Education, Marissa A. Gutierrez-Vicario
Journal of Social Theory in Art Education
This article explores how art education can address social issues like immigration through an art intervention at a university in New York City. The author, a Mexican-American educator, guides students in using art to critically engage with immigration, challenge oppressive structures, and envision a more inclusive world. Through storytelling and public art, students invite campus members to reflect on immigration, encouraging dialogue and critical thinking. The intervention highlights the complex nature of social-engaged art, fostering creativity and questioning societal norms while promoting discussions around identity, migration, and belonging in the pursuit of social change.
Coalition Building In Art Education: Holding Space, Redistributing Weight And Witnessing, Kathy J. Brown, Beth Link, Kendall Crabbe, Cheryl Boone
Coalition Building In Art Education: Holding Space, Redistributing Weight And Witnessing, Kathy J. Brown, Beth Link, Kendall Crabbe, Cheryl Boone
Journal of Social Theory in Art Education
Our coalition is made up of four art educators working across institutions of higher education. After encountering various racialized critical incidents, we began meeting virtually and in-person, to imagine new ways of navigating academic spaces. We are all cis women, two of us identify as Black, 2 as white, with varied ages and positions in academic institutions across the country. We gathered after the surge of Black Lives Matter protests and in the wake of a global pandemic. We gathered amid political backlash in the south as anti-CRT and DEI legislation dominated educational landscapes and abortion rights were curtailed. We …
Boundless Community: A Developing Disability Arts Movement, Sarah K. Benson, Khaldoun Hijazin, Alaa Qattam, Suha Khuffash
Boundless Community: A Developing Disability Arts Movement, Sarah K. Benson, Khaldoun Hijazin, Alaa Qattam, Suha Khuffash
Journal of Social Theory in Art Education
Over several years, individual organizations in Jordan have been focused on increasing the participation of individuals with disabilities in the arts. Increasing inclusion can provide a powerful tool to create visibility, amplify marginalized voices and disrupt normative narratives. However, these isolated efforts had a limited impact until a cohesive effort borne by a burgeoning community of practice led to the first Amman Arts and Disability Summit. Bringing together youth, artists and gallery owners, the movement leaders are using models of social learning and communities of practice to create a more inclusive arts community. The movement stands on the precipice of …
Sparks Of Creative Agency In Arts Education: Flashpoints Of Social Injustice To Imagine Otherwise, Sarah Travis, Kendall Crabbe
Sparks Of Creative Agency In Arts Education: Flashpoints Of Social Injustice To Imagine Otherwise, Sarah Travis, Kendall Crabbe
Journal of Social Theory in Art Education
This paper examines how experiences of social injustice can become sparks of creative agency in arts education and thus can lead collective forces towards social justice. Drawing from critical social theoretical perspectives on arts equity, creative agency, and transformational resistance, the authors engage flashpoint methodology to highlight pivotal moments documenting experiences from their respective research studies of youth arts education programs. These pivotal experiential moments—flashpoints—reveal insights into how disruptive and disorienting experiences of social injustice can spark creative agency and facilitate collective movement toward social justice.
Fabricating Decolonial Futures: The Power Of Afrofuturism And Indigenous Futurism, Albert Stabler
Fabricating Decolonial Futures: The Power Of Afrofuturism And Indigenous Futurism, Albert Stabler
Journal of Social Theory in Art Education
Inspired by important works of speculative fiction, the movements of Afrofuturism and Indigenous Futurism have come to encompass a wide range of works by Black and Indigenous creators, including but not limited to visual artists. In this article I describe my own work as a white high school art teacher in a BIPOC classroom, leading class projects motivated by the fascinating overlaps of traditional practices, social critique, and futuristic fantasy in Afrofuturist art. I then go on to describe speculative creative works by Indigenous and Black artists that have continued to follow this path, particularly using digital tools and new …
Artist Statements As Colectiva: Informed By Lived Experiences And Anzaldúan Theories, Christen Sperry García, Elizabeth Gonzalez, Alexis Marie Ramos
Artist Statements As Colectiva: Informed By Lived Experiences And Anzaldúan Theories, Christen Sperry García, Elizabeth Gonzalez, Alexis Marie Ramos
Journal of Social Theory in Art Education
As visual artists, our ability to explain process and convey meaning in our work is very important. Our BFA and MFA studio art programs trained us to write clear, concise, and universal artist statements. We were encouraged to highlight the concepts behind our visual work and discouraged from including our personal narratives or employing Chicane or Latine bodies of knowledge. In response, we apply theories and methodologies by Gloria Anzaldúa to our artist statements. First, we offer a framework of testimonio, Borderlands theory, and autohistoria-teoría. Using the methodology of nepantlando, a creative doing of existing in-between worlds, we …
Movement And Momentum, Carissa Dicindio
Movement And Momentum, Carissa Dicindio
Journal of Social Theory in Art Education
No abstract provided.
Antara Polisi, Masyarakat Dan Pembinaan Kamtibmas, I. Nyoman Nurjaya, S.H.
Antara Polisi, Masyarakat Dan Pembinaan Kamtibmas, I. Nyoman Nurjaya, S.H.
Jurnal Hukum & Pembangunan
Abstract
Azas Presumption Of Innocence Di Negara Hukum Indonesia (Suatu Pemehaman Empirik), I. Nyoman Nurjaya, S.H.
Azas Presumption Of Innocence Di Negara Hukum Indonesia (Suatu Pemehaman Empirik), I. Nyoman Nurjaya, S.H.
Jurnal Hukum & Pembangunan
Abstract
Pertanggungjawaban Terhadap Delik-Delik Ekonomi, Prof. Dr. A. Zainal Abidin F., S.H>
Pertanggungjawaban Terhadap Delik-Delik Ekonomi, Prof. Dr. A. Zainal Abidin F., S.H>
Jurnal Hukum & Pembangunan
Abstract
Optimizing 3d Printing Parameters For Pla And Petg: Advancing High-Quality Skull Implant Production, Reem Khzzal, Marwan Nafaa, Wisam Hamdan
Optimizing 3d Printing Parameters For Pla And Petg: Advancing High-Quality Skull Implant Production, Reem Khzzal, Marwan Nafaa, Wisam Hamdan
Engineering and Technology Journal
This study investigates the mechanical performance of 3D-printed polylactic acid and polyethylene terephthalate glycol materials by examining the effects of three crucial printing parameters (layer thickness, infill density, and infill pattern). Each material was tested mechanically for impact toughness, flexural strength, ductility, and ultimate tensile strength (UTS) using a Box-Behnken Design (BBD) to create 15 samples. The statistical significance of each parameter's impact was evaluated using ANOVA. The findings showed that, for PLA, layer thickness had no discernible impact on impact toughness (p = 0.726), while infill density (p = 0.031) and infill pattern (p = 0.049) had the most …
Enhancing The Surface Integrity Of Gas Turbine Compressor Blades Using Alumina Abrasives In Magnetic Finishing: An Experimental Approach, Tahseen Salman, Saad Shather, Baraa Albaghdadi
Enhancing The Surface Integrity Of Gas Turbine Compressor Blades Using Alumina Abrasives In Magnetic Finishing: An Experimental Approach, Tahseen Salman, Saad Shather, Baraa Albaghdadi
Engineering and Technology Journal
Magnetic Abrasive Finishing (MAF) is a highly effective technique for enhancing the surface integrity of high-value components with complex geometries, owing to its non-contact, flexible, and precisely controllable nature. This study investigates the use of Al₂O₃ (alumina) powder as an abrasive medium in the MAF process, selected for its high hardness, thermal stability, and chemical inertness. Although Al₂O₃ is only weakly paramagnetic, it was successfully incorporated into the magnetic abrasive brush through mechanical blending with ferromagnetic particles that respond to the magnetic field. This hybrid abrasive system enables effective control of finishing forces, leading to significant improvements in surface quality …
Parametric Evaluation And Biomechanical Assessment Of A Curved Biodegradable Zk60 Locking Plate For Femoral Shaft Fractures Using Finite Element Analysis, Ahmad Jasim, Jenan Kashan, Aseel Abed
Parametric Evaluation And Biomechanical Assessment Of A Curved Biodegradable Zk60 Locking Plate For Femoral Shaft Fractures Using Finite Element Analysis, Ahmad Jasim, Jenan Kashan, Aseel Abed
Engineering and Technology Journal
This study evaluates the biomechanical performance of a novel curved biodegradable ZK60 magnesium alloy locking plate for plate osteosynthesis in midshaft femoral fractures classified as AO/ASIF 32-A3 (Arbeitsgemeinschaft für Osteosynthesefragen/Association for the Study of Internal Fixation). Current metallic implants are associated with complications such as stress shielding, the need for secondary surgery, and limited support for biological healing. Biodegradable options offer promising solutions but remain insufficiently studied, especially regarding curved plate designs. This work addresses that gap by systematically assessing how plate thickness and curvature influence fracture stability. Finite element analysis (FEA) was performed under physiological loading of 700 N …
Tribological Properties Evaluation Of Powdered Pentaclethra Macrophylla Pod And Gum-Arabic For Brake Pad, I. Iloabachie, A. Nwankwo, C. Ogbu
Tribological Properties Evaluation Of Powdered Pentaclethra Macrophylla Pod And Gum-Arabic For Brake Pad, I. Iloabachie, A. Nwankwo, C. Ogbu
Engineering and Technology Journal
This study evaluated the tribological properties of an eco-friendly brake pad. Pentaclethra macrophylla pod was pulverized into powder form and sieved. Two particle sizes of 150 μm and 210 μm were obtained after sieving, and the sieved particles were divided into two portions, with one portion carbonized and the other uncarbonized. The brake pad composite was produced by varying the composition of powdered reinforcement in the order of 10, 20, 30, 40, and 50 wt.%. The formulation was poured into a metal mould 50 × 50 × 8 mm3, placed in a hot platen press at a temperature of about …
The Influence Of The Alkali-Treated Bamboo Particles On The Rubber Blend Properties For Medical Applications, Shaymaa Ahmed, Jawad Oleiwi, Qahtan Hamad
The Influence Of The Alkali-Treated Bamboo Particles On The Rubber Blend Properties For Medical Applications, Shaymaa Ahmed, Jawad Oleiwi, Qahtan Hamad
Engineering and Technology Journal
This study investigates the effect of chemical treatment on the mechanical properties of bamboo particle-reinforced grafted binary rubber blend systems (RTV-SIR/PUR), particularly for medical applications such as Solid Ankle Cashion heel (SACH) prosthetic feet. The Grafted binary rubber blend composite is consisting of Polyurethane (PUR) with (10, 20, and 30 wt.%) of Room temperature vulcanized silicone rubber (RTV-SIR) with presence of 0.1% of Tetraethoxysilane (TEOS) as coupling agent to more compatibility, and added different percentage of treated bamboo particles (3, 6, and 9 wt.%) that treated by 5% of Sodium Hydroxide (NaOH). The effectiveness of the alkali treatment in eliminating …
Effect Of Ag-Ptfe Nanocomposite Coating On Wettability And Antimicrobial Activity Of Orthodontic Wires, Mahmood Naser, Emad Al-Hassani, Fatima Al-Hassani
Effect Of Ag-Ptfe Nanocomposite Coating On Wettability And Antimicrobial Activity Of Orthodontic Wires, Mahmood Naser, Emad Al-Hassani, Fatima Al-Hassani
Engineering and Technology Journal
This study investigates the effect of Ag–PTFE nanocomposite coatings, prepared by radio frequency (RF) sputtering, on the surface and antimicrobial properties of orthodontic stainless steel archwires (SSW). The novelty lies in combining silver (Ag) and polytetrafluoroethylene (PTFE) nanoparticles into one coating, which has not been widely applied to orthodontics. The motivation is the need to reduce microbial adhesion and biofilm on archwires, which contribute to enamel demineralization, gingival disease, and infections. The problem addressed is the lack of coatings that can simultaneously provide enhanced surface properties, facilitate controlled silver ion release, and deliver durable antibacterial performance. Unlike literature that mainly …
Microstructure And Mechanical Properties Of Dissimilar Joint Of Stainless Steel Pipes Using Rotary Friction Welding, Zhiyar Tawfeeq, Ramadhan Gardi
Microstructure And Mechanical Properties Of Dissimilar Joint Of Stainless Steel Pipes Using Rotary Friction Welding, Zhiyar Tawfeeq, Ramadhan Gardi
Engineering and Technology Journal
Dissimilar welding joints of different grades of stainless-steel pipes using various welding processes and technologies have received special attention in the world of manufacturing in the last few years, due to the wide application of different grades of this material in different sectors, including refineries, chemical plants, heat exchangers, and power generation plants. The utilization of rotary friction welding has significantly increased, and more studies on it have been conducted to reduce the difficulties of joining similar and dissimilar materials in general and steel in specific, as it decreases the heat input and thermal cycle. This study investigated the effect …
Sustainable Geopolymer Concrete: Iraqi Steel Slag As A High-Performance Aggregate For Improved Strength And Durability, Riyam Jaddana, Hussein Jaber
Sustainable Geopolymer Concrete: Iraqi Steel Slag As A High-Performance Aggregate For Improved Strength And Durability, Riyam Jaddana, Hussein Jaber
Engineering and Technology Journal
The construction industry’s reliance on ordinary Portland cement (OPC) contributes significantly to CO₂ emissions and resource depletion. Geopolymer concrete (GPC) offers a sustainable alternative, but natural aggregates (NAs) still harm the environment. This study investigates recycled coarse steel slag aggregate (RCSA), a metallurgical byproduct, as a partial replacement (10, 20, 30, and 40% by volume) for natural coarse aggregate (NCA) in metakaolin-based GPC. The geopolymer paste was formulated with optimal molar ratios of 3.65 for SiO₂/Al₂O₃, 2.9 for sodium hydroxide/ sodium silicate, and 0.62 for water/metakaolin. Results showed that incorporating RCSA enhances both mechanical and physical properties of GPC. Optimal …
Enhancing Antibacterial Performance Of Powder Metallurgy-Fabricated Ti, Ti-15mo, And Ti-45zr Alloys Through Small Liquid Metal Gallium Additions In Biomedical Applications, Ammar Hasan, Fatimah Al‑Hasani, Emad Al‑Hassani
Enhancing Antibacterial Performance Of Powder Metallurgy-Fabricated Ti, Ti-15mo, And Ti-45zr Alloys Through Small Liquid Metal Gallium Additions In Biomedical Applications, Ammar Hasan, Fatimah Al‑Hasani, Emad Al‑Hassani
Engineering and Technology Journal
This study investigates the influence of small liquid metal gallium additions (1, 1.5, 2, and 2.5 wt%) on the antibacterial performance of Ti, Ti-15Mo, and Ti-45Zr alloys fabricated by the powder metallurgy method. The alloys were manufactured by sintering at 1250 °C to improve the antibacterial activity of Titanium and its alloys in biomaterial applications. X-ray diffraction (XRD) was used to identify the dominant compounds and phases after adding liquid gallium metal, and the antibacterial activity was also tested; the results indicate an increase in the Zone of inhibition of Ti, Ti-15Mo, and Ti-45Zr with increasing gallium/Ga content, where the …