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Articles 75421 - 75450 of 1738838
Full-Text Articles in Entire DC Network
3r-Stadte Furs Leben Gestalten [Designing 3r Cities For Life], Lily Kong
3r-Stadte Furs Leben Gestalten [Designing 3r Cities For Life], Lily Kong
Research Collection School of Social Sciences
What does it mean for a city to be resilient in today’s world? In July this year, over 100 city leaders, scholars, and industry partners gathered at City Dialogues in Vienna, co-convened by Singapore Management University and Urban Innovation Vienna, to reflect on the critical question of urban resilience. Held alongside the Mayors Forum of the World Cities Summit 2025, the dialogue provided a timely opportunity to share how cities can navigate complexity—not only in response to disruption, but also in pursuit of sustainable and inclusive futures. Inspired by SMU City Dialogues, I explore here how cities can bounce back, …
Elbow Interpositional Arthroplasty Using An Achilles Tendon Allograft: A Case Report., Matthew Glazier, Morgan Turnow, Hunter Pharis, Taylor Manes, Hayden Schuette, Stephen Wiseman
Elbow Interpositional Arthroplasty Using An Achilles Tendon Allograft: A Case Report., Matthew Glazier, Morgan Turnow, Hunter Pharis, Taylor Manes, Hayden Schuette, Stephen Wiseman
Surgery Articles
INTRODUCTION: The treatment of post-traumatic elbow arthritis poses a significant challenge for orthopedic surgeons, especially in young active patients. Total elbow arthroplasty is often the recommended treatment option in older patients; however, interpositional arthroplasty remains a viable option in high-demand patients.
CASE REPORT: We report a case of a 50-year-old male who presented after the development of post-traumatic arthritis of the elbow after multiple prior surgeries. He was treated with an interpositional arthroplasty using an Achilles tendon graft and allowed immediate range of motion as tolerated in a hinged elbow brace without the use of any form of distraction external …
Associative Coding Of Conditioned Fear In The Thalamic Nucleus Reuniens In Rodents And Humans, Tuğçe Tuna, Michael S Totty, Muhammad Badarnee, Flávio Afonso Gonçalves Mourão, Shaun Peters, Mohammad R Milad, Stephen Maren
Associative Coding Of Conditioned Fear In The Thalamic Nucleus Reuniens In Rodents And Humans, Tuğçe Tuna, Michael S Totty, Muhammad Badarnee, Flávio Afonso Gonçalves Mourão, Shaun Peters, Mohammad R Milad, Stephen Maren
Faculty, Staff and Student Publications
The nucleus reuniens (RE) is a midline thalamic structure interconnecting the medial prefrontal cortex (mPFC) and the hippocampus (HPC). Recent work in both rodents and humans implicates the RE in the adaptive regulation of emotional memories, including the suppression of learned fear. However, the neural correlates of aversive learning in the RE of rodents and humans remain unclear. To address this, we recorded RE activity in humans (BOLD fMRI) and rats (fiber photometry) during Pavlovian fear conditioning and extinction. In both rats and humans, we found that conditioned stimulus (CS)-evoked activity in RE reflects the associative value of the CS. …
Abundance Of Gratitude, Renee Kaufmann
Abundance Of Gratitude, Renee Kaufmann
Journal of Communication Pedagogy
Editor's note
Theorizing With Purpose: A Five-Step Approach To Motivate And Guide Students In Communication Theory Courses, Weixu Lu
Journal of Communication Pedagogy
This study addresses the challenges of effectively teaching communication theories to undergraduate students by highlighting the gap between the need for developing higher-order, transferrable knowledge and the learning needs of novice learners. To bridge this gap, it introduces a novel five-step model integrating motivation, direct instruction, revisiting, assessing, and invention steps into the teaching process. Assessment results from two semesters were compared to evaluate the efficacy of this model, showing significant improvements in students’ comprehension of communication theories, ability to theorize communication phenomena, and proficiency in formulating research questions based on theoretical insights. These findings suggest the potential of the …
If It Walks Like A Duck: Self-Identification, Definition, And Experiences Of Non-Traditional Doctoral Students In The Communication Discipline, Laura C. Bruns, Sara V.A. Kaufman, Ana Lisa Padron Eberline, Meredith L. Pruden, Erin Perry, Elise P. Taylor, Deborah J. Danuser
If It Walks Like A Duck: Self-Identification, Definition, And Experiences Of Non-Traditional Doctoral Students In The Communication Discipline, Laura C. Bruns, Sara V.A. Kaufman, Ana Lisa Padron Eberline, Meredith L. Pruden, Erin Perry, Elise P. Taylor, Deborah J. Danuser
Journal of Communication Pedagogy
This study aimed to understand experiences of nontraditional doctoral students pursuing their PhD in Communication. Although the term “nontraditional student” exists in the literature (Cox & Ebbers, 2010; Stone & O’Shea, 2019), there is little consensus about demographics of nontraditional doctoral students (NTDS), nor their experiences navigating these programs. Using qualitative, thematic analysis of survey responses (n = 52), this critical mixed-method study found three themes— age, experience, and education gap—as defining identity factors, barriers, and benefits. Participants described themselves as nontraditional due to different lived experiences from graduate peers, resulting in feelings of “Otherness” within their programs. These findings …
Communicatively Enhancing Belonging By Meeting The Motivations Of First-Generation College Students In The Classroom, Miles C. Coleman, Brooke Hoffman, Angela Cirucci
Communicatively Enhancing Belonging By Meeting The Motivations Of First-Generation College Students In The Classroom, Miles C. Coleman, Brooke Hoffman, Angela Cirucci
Journal of Communication Pedagogy
First-generation college students’ (FGCS) experiences can be accompanied by lower senses of belonging when compared to continuing-generation college students (CGCS). This article explores some instructional communication best practices for supporting belongingness by meeting the motivations of FGCS with phrasings, framings, and designs of course content that might cultivate resonance with that which drives students. Specifically, strategies are discussed for meeting the motivations of FGCS as they might be shaped by imposter syndrome, negative affect, and orientations toward upward mobility.
Rigor And Academic (Re)Socialization: The Faculty Role In Student Success Curriculum, Kendra Knight, Stephanie Grau, Elissa Foster, Jay Baglia
Rigor And Academic (Re)Socialization: The Faculty Role In Student Success Curriculum, Kendra Knight, Stephanie Grau, Elissa Foster, Jay Baglia
Journal of Communication Pedagogy
In the post-pandemic learning era, communication faculty experience tensions among expectations for flexibility, sensitivity to students’ well-being, and our commitment to the academic rigor of our courses. These tensions, we argue, may be resolved through offering academic (re)socialization as a stand-alone element of the communication curriculum. This essay explicates the development and implementation of a for-credit workshop-style course aimed at bridging gaps in student academic capital laid bare by the COVID-19 learning crisis. “Communication Fundamentals for College Success” is a collaborative effort among six communication instructors to support practical and socio-emotional skills that undergird students’ transdisciplinary intellectual growth. We reflect …
Rethinking The Reach Of The Basic Course: Diversity And Interdisciplinarity As Catalysts For Reinvigorating The Foundations Of The Discipline, Narissra Maria Punyanunt-Carter, Sydney E. Brammer, Ryan J. Martinez
Rethinking The Reach Of The Basic Course: Diversity And Interdisciplinarity As Catalysts For Reinvigorating The Foundations Of The Discipline, Narissra Maria Punyanunt-Carter, Sydney E. Brammer, Ryan J. Martinez
Journal of Communication Pedagogy
Communication scholars have significantly advanced knowledge across various subjects and in basic course classrooms, yet face obstacles in conveying their importance to students and wider communities. Challenges like COVID-19 disruptions, inadequate teacher pipelines, and limited diversity in education hinder interdisciplinary communication, leading to insufficient funding and support. Neglecting diversity perpetuates systemic inequalities, limiting perspectives in syllabuses. Advocating for inclusivity and exploring practical implications of communication, such as organizational communication and societal engagement, enhances the field’s value. Prioritizing research with theoretical and practical implications, particularly in diversity, equity, and inclusion, empowers marginalized voices and promotes understanding. Embracing these efforts ensures communication …
Critical Communication Pedagogy At The End Of The World, Tyler S. Rife
Critical Communication Pedagogy At The End Of The World, Tyler S. Rife
Journal of Communication Pedagogy
This essay draws upon my experiences teaching the undergraduate course, “Communication at the End of the World,” to argue for an approach to critical communication pedagogy (CCP) contextualized by and reflexively responsive to planetary-scale ecological crises. I outline how five commitments have come to guide my classroom’s explorations through our topic of “end-times” communication: (1) Anthropocentrism and speciesism participate in the maintenance of social hierarchy; (2) environmental justice and social justice are intimately entangled projects; (3) ecological crisis is (re)made concrete, embodied, proximal, and implicative; (4) critique of language involves critique of humanism and humanist historicization; and, (5) ecologically just …
Editor’S Note: Toward A Transgressive Communication Pedagogy: Reflections And Directions In/For Dark Times, Lionnell Smith
Editor’S Note: Toward A Transgressive Communication Pedagogy: Reflections And Directions In/For Dark Times, Lionnell Smith
Journal of Communication Pedagogy
This essay introduces a special section marking the 30th anniversary of bell hooks’s Teaching to Transgress, exploring its relevance within the current sociopolitical climate marked by intensified assaults on diversity, equity, and inclusion (DEI) in education. Grounded in hooks’s vision of education as a practice of freedom, this essay proposes a framework of transgressive communication pedagogy— an approach that champions radical love, political agency, and open dialogue to resist hegemonic educational structures. The featured contributions in this section examine transgressive practices across diverse contexts: community-based intercultural teaching, intersectional identity work, support for Black students in minority-serving institutions, decolonial approaches to …
Teaching To Transgress In Intercultural Communication Contexts In Utah: A Plática Approach, Leandra H. Hernández, Sidi Meyara, Stevie Munz
Teaching To Transgress In Intercultural Communication Contexts In Utah: A Plática Approach, Leandra H. Hernández, Sidi Meyara, Stevie Munz
Journal of Communication Pedagogy
Reflecting on legislative changes in Utah and their implications for teaching topics related to social justice, this plática explores the challenges and the possibilities that exist in our pursuit of liberatory pedagogy. Relying on the work of bell hooks and Chicana feminist scholars, we argue that despite the challenges posed by restrictions to DEI, educators should rely on critical communication pedagogical approaches to promote transparency and intentionality, model vulnerability, build community relationality, and recognize our collective humanity. Recognizing teaching as an embodied experience, we argue through engaging in self-reflection and relying on critical pedagogical approaches, we are able to equip …
Transgressing Media History, Ashley R. Kennard
Transgressing Media History, Ashley R. Kennard
Journal of Communication Pedagogy
Traditional Mass Media History courses serve to uphold the status quo. Born out of the white supremacist, capitalist patriarchy, the myth of the inventor provides a powerful example of one of the ways these traditional ideologies and pedagogies persist. However, through building community, being vulnerable, co-constructing knowledge, including diversity, and rewriting history, a counter- hegemonic, transgressive approach to teaching communication history in the spirit of bell hooks is possible. This starts by creating transformative and inclusive communication classrooms that serve to dismantle the myth of the inventor.
Transgressing Linguistic Supremacy: Reimagining Public Speaking Through Culturally Sustaining Pedagogy, Sergio Fernando Juárez
Transgressing Linguistic Supremacy: Reimagining Public Speaking Through Culturally Sustaining Pedagogy, Sergio Fernando Juárez
Journal of Communication Pedagogy
This essay reimagines public speaking education through a culturally sustaining and transgressive lens that challenges dominant norms of language, professionalism, and communication competence. It critiques the ways in which public speaking courses often reinforce linguistic supremacy by privileging standardized English and marginalizing multilingual and culturally grounded speech practices. Drawing on concepts such as translanguaging, Culturally Sustaining Pedagogy (CSP), and transgressive pedagogies, the author calls for a shift in pedagogy that centers students’ lived experiences, community-rooted knowledge, and linguistic norms. Rather than asking students to conform to hegemonic standards, this approach empowers them to speak on their own terms, resist assimilationist …
Centering Sponsorship And Mentorship In Central, Bringing Coherence To Our Future, Kathy J. Denker, Tiffany J, Bell, Madeline S. Pringle, Grace Sikapokoo
Centering Sponsorship And Mentorship In Central, Bringing Coherence To Our Future, Kathy J. Denker, Tiffany J, Bell, Madeline S. Pringle, Grace Sikapokoo
Journal of Communication Pedagogy
Presidential Spotlight from 2025.
Journal Of Communication Pedagogy, Complete Volume, 2025
Journal Of Communication Pedagogy, Complete Volume, 2025
Journal of Communication Pedagogy
No abstract provided.
Temporal Disparities In Diagnosis: The Critical Impact Of Laboratory Workflow Inefficiencies On Outcomes In Metabolic And Cardiovascular Disorders, Evans Dzreke, Celene Dzreke, Ramseyer Adekorang Asamoah, David Kanze
Temporal Disparities In Diagnosis: The Critical Impact Of Laboratory Workflow Inefficiencies On Outcomes In Metabolic And Cardiovascular Disorders, Evans Dzreke, Celene Dzreke, Ramseyer Adekorang Asamoah, David Kanze
Health & Biomedical Sciences Faculty Publications
Diagnostic delays and laboratory process inefficiencies constitute a common but unaddressed dilemma in contemporary healthcare, quietly undermining patient outcomes in metabolic and cardiovascular illnesses where immediate intervention is critical. This seminal work goes beyond traditional operational viewpoints to demonstrate diagnostic inefficiency as an independent, adjustable risk factor with far-reaching implications. We rigorously quantified the impact of delayed test processing and reporting on clinical outcomes using a comprehensive mixed-methods approach that included multi-center retrospective cohort analysis (N=128,743 patients), real-time workflow mapping across 37 laboratories, in-depth case reviews, and economic modeling. Our findings challenged conventional wisdom by indicating that each 24-hour increase …
A Focused Ethnography: Mental Health Therapists In Pediatric Integrated Care, Melanie Agustin
A Focused Ethnography: Mental Health Therapists In Pediatric Integrated Care, Melanie Agustin
Counseling & Human Services Theses & Dissertations
The scope of practice for Licensed Professional Counselors (LPCs) and counseling residents (LPC-R) in integrated behavioral health (IBH) settings is grounded in accredited, theory-informed education and training. The benefits of IBH models are well-documented, however there is limited research that addresses how counselors develop professionally and clinically function, while navigating within pediatric inpatient environments. This qualitative dissertation used a focused ethnographic design to explore the lived experiences of ten purposively sampled counselors (n = 10) through demographic surveys, field observation, and semi-structured interviews. Reflexive journaling bracketed researcher bias, and thematic analysis, supported by NVivo and new member checking, guided interpretation. …
A Methodology For Model-Based Certification, Jay Albert Silverman
A Methodology For Model-Based Certification, Jay Albert Silverman
Engineering Management & Systems Engineering Theses & Dissertations
A need for a single source of knowledge for design decisions has led to the development of a new field of systems engineering, model-based systems engineering (MBSE) (Delligati, 2014). System certification is defined as affirming that regulatory requirements for a system have been met (Goodwin & Juzaitis, 2006). System certification is a specific application of system validation. System verification can be defined as ensuring that the system of interest (SOI), as designed, is in accordance with the design inputs/requirements. System validation can be defined as ensuring that the SOI, as designed, meets the defined system needs (Wolfgand, Katz, & Wheatcraft, …
Recommended For You Streaming Platform Recommendation Algorithms And Consumer Rights, Margaret Wilson
Recommended For You Streaming Platform Recommendation Algorithms And Consumer Rights, Margaret Wilson
Canadian Journal of Law and Technology
Streaming platforms are becoming increasingly popular with consumers. In Canada, recent studies have suggested that 55% of Canadians use video streaming services, like Netflix, on a daily basis. Similarly, up to 30% stream audio content daily on platforms like Spotify.6 The federal government has recognized that the broadening use of these technologies creates new challenges for consumer privacy and has proposed updates to consumer privacy laws in Bill C-27. With the dissolution of the 44th Parliament on March 23, 2025, Bill C-27 died on the roll and will not be adopted. As proposed legislation, Bill C-27 signalled the direction of …
Navigating The Shadows: Evaluating Privacy Protections Against Dark Patterns, Matt Gaulton, Dominique Kelly, Dr. Jacquelyn Burkell
Navigating The Shadows: Evaluating Privacy Protections Against Dark Patterns, Matt Gaulton, Dominique Kelly, Dr. Jacquelyn Burkell
Canadian Journal of Law and Technology
Privacy dark patterns are user interface design strategies that manipulate individuals into disclosing personal information or consenting to data practices they may not fully understand or intend. This paper critically evaluates the effectiveness of Canadian, American, and European privacy frameworks — specifically, the Personal Information Protection and Electronic Documents Act (PIPEDA), the California Consumer Privacy Act (CCPA), and the European Union’s General Data Protection Regulation (GDPR) — in addressing the regulatory challenges posed by privacy dark patterns. We argue that PIPEDA is significantly less equipped to counteract such manipulative practices, particularly in comparison to the GDPR and CCPA, due to …
Considering The Concept Of Law In The Legal Singularity, Matthew Tse
Considering The Concept Of Law In The Legal Singularity, Matthew Tse
Canadian Journal of Law and Technology
This review article engages with the idea of a ‘‘legal singularity”, which has been developed by Abdi Aidid and Benjamin Alarie in their book, The Legal Singularity: How Artificial Intelligence Can Make Law Radically Better.
The legal singularity describes a legal system in the future that harnesses algorithmic computation to facilitate a ‘‘stable and complete legal order, capable of addressing and resolving practically all types of legal uncertainty in real time and on demand”. Aidid and Alarie believe algorithmic computation will achieve this promise in an interdependent dual process. On one hand, algorithms will structure the law with conceptual standardization. …
Balancing The Use Of Ai With Canadian Privacy Rights: An Analysis Of Personal Information Collection Through Emerging Ai Tools, Tamie Dolny, Methura Sinnadurai
Balancing The Use Of Ai With Canadian Privacy Rights: An Analysis Of Personal Information Collection Through Emerging Ai Tools, Tamie Dolny, Methura Sinnadurai
Canadian Journal of Law and Technology
Biometric information collection through artificial intelligence (AI) is a new, dynamic and exciting technology that also raises significant privacy law considerations for in house and governmental lawyers in Canada. While organizations may be quick to collect personal information using forms of AI technology, these entities should be aware of the legal risk posed by technologies which may violate the Freedom of Information and Protection of Privacy Act (FIPPA)1 and/or the Municipal Freedom of Information and Protection of Privacy Act (MFIPPA),2 especially if users are unaware of, or have not consented to the use of their personal information by the AI …
Mantle Flow And Crustal Deformation Revealed By Seismic Anisotropy In The Subduction Zone Beneath Myanmar, Enbo Fan, Mingming Jiang, Yinshuang Ai, Stephen S. Gao, Kelly H. Liu, Yumei He, Yiming Bai, Guangbing Hou, Yuan Ling, Chit Thet Mon, Myo Thant, Kyaing Sein
Mantle Flow And Crustal Deformation Revealed By Seismic Anisotropy In The Subduction Zone Beneath Myanmar, Enbo Fan, Mingming Jiang, Yinshuang Ai, Stephen S. Gao, Kelly H. Liu, Yumei He, Yiming Bai, Guangbing Hou, Yuan Ling, Chit Thet Mon, Myo Thant, Kyaing Sein
Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works
The oblique convergence of the Indian and Eurasian plates drives significant deformation in the crust and mantle beneath Myanmar. However, the crustal deformation in the Indo-Burman Ranges (IBR) and mantle flow beneath Myanmar and adjacent areas remain unclear due to limited studies. We utilized data from the newly deployed second phase of the China-Myanmar Geophysical Survey of the Myanmar Orogen array to perform shear wave splitting analysis of PKS, SKKS, and SKS (XKS) phases. Our results, together with previous findings, provide new insights into mantle flow and crustal deformation across central Myanmar. In the IBR, we observed a transition from …
Mode Regulates Alternative Nitrogenase Expression In Themethanogen Methanosarcina Acetivorans, Melissa Chanderban, Daniel J. Lessner
Mode Regulates Alternative Nitrogenase Expression In Themethanogen Methanosarcina Acetivorans, Melissa Chanderban, Daniel J. Lessner
Biological Sciences Faculty Publications and Presentations
All methanogens that can fix nitrogen use molybdenum (Mo) nitrogenase. Some methanogens, including Methanosarcina acetivorans, also contain alternative vanadium- and iron-nitrogenases, encoded by the vnf and anf operons, respectively. These nitrogenases are produced when there is insufficient Mo to support Mo-nitrogenase activity. The factors that control the expression of the alternative nitrogenases in response to Mo availability are unknown in methanogens. Here we show that ModE is the regulator that represses transcription of the vnf and anf operons in M. acetivorans when cells are grown with Mo. CRISPRi repression of modE results in a significant increase in the transcription of …
Incorporating Ecosystem Service Assessments Into Development Planning − Impact From A Dredging Project In South Australia On Seagrass, Sam Gaylard, Rachel Colella, Matt Nelson, Paul Lavery, Michelle Waycott
Incorporating Ecosystem Service Assessments Into Development Planning − Impact From A Dredging Project In South Australia On Seagrass, Sam Gaylard, Rachel Colella, Matt Nelson, Paul Lavery, Michelle Waycott
Research outputs 2022 to 2026
Major infrastructure development is required for economic development and to improve human well-being, however conflict exists between developers and the community. Environmental impact assessment (EIA) is used in over 100 countries to evaluate potential impacts of major developments across environment, economy, and social benchmarks. However, EIA has been criticized for a lack of transparency and accountability, lack of consultation or participation and inadequate science. An ecosystem service assessment (ESA) recognizes the links between the environment and the socio-economic environment, resulting in a more holistic evaluation of potential impacts and effective community consultation. Despite this, its inclusion within EIA's is rare. …
Discordance Of Small Dense Ldl Cholesterol Beyond Ldl Cholesterol Or Non–Hdl Cholesterol And Carotid Plaque, Jinqi Wang, Xiaoyu Zhao, Yanchen Zhao, Rui Jin, Yunfei Li, Jiahe Wang, Yueruijing Liu, Zhiyuan Wu, Xiuhua Guo, Lixin Tao
Discordance Of Small Dense Ldl Cholesterol Beyond Ldl Cholesterol Or Non–Hdl Cholesterol And Carotid Plaque, Jinqi Wang, Xiaoyu Zhao, Yanchen Zhao, Rui Jin, Yunfei Li, Jiahe Wang, Yueruijing Liu, Zhiyuan Wu, Xiuhua Guo, Lixin Tao
Research outputs 2022 to 2026
Background: Different low-density lipoprotein (LDL) particles exhibit distinct proatherogenic properties. Objectives: This study sought to evaluate associations of small dense low-density lipoprotein cholesterol (sdLDL-C), large buoyant low-density lipoprotein cholesterol (lbLDL-C), sdLDL-C/LDL-C ratio, and sdLDL-C/lbLDL-C ratio with carotid plaque (CP) risk in the general population, and to perform discordance analyses to determine which biomarker better reflects CP risk beyond low-density lipoprotein cholesterol (LDL-C) and non–high-density lipoprotein cholesterol (non-HDL-C). Methods: This study enrolled 20,369 participants from Beijing Health Management Cohort. Discordant sdLDL-C, lbLDL-C, or ratio metrics (sdLDL-C/LDL-C and sdLDL-C/lbLDL-C) relative to LDL-C or non-HDL-C, and discordant ratio metrics relative to sdLDL-C, were …
Ed-Filter: Dynamic Feature Filtering For Eating Disorder Classification, Mehdi Naseriparsa, Suku Sukunesan, Zhen Cai, Osama Alfarraj, Amr Tolba, Saba Fathi Rabooki, Feng Xia
Ed-Filter: Dynamic Feature Filtering For Eating Disorder Classification, Mehdi Naseriparsa, Suku Sukunesan, Zhen Cai, Osama Alfarraj, Amr Tolba, Saba Fathi Rabooki, Feng Xia
Research outputs 2022 to 2026
Eating disorders (ED) are critical psychiatric problems that have alarmed the mental health community. Mental health professionals are increasingly recognizing the utility of data derived from social media platforms such as Twitter. However, high dimensionality and extensive feature sets of Twitter data present remarkable challenges for ED classification. To overcome these hurdles, we introduce a novel method, an informed branch and bound search technique known as ED-Filter. This strategy significantly improves the drawbacks of conventional feature selection algorithms such as filters and wrappers. ED-Filter iteratively identifies an optimal set of promising features that maximize the eating disorder classification accuracy. In …
Impact Of Biodegradation On The Mechanical And Fatigue Properties Of 3d-Printed Pla Bone Scaffolds, Hamed Bakhtiari, Alireza Nouri, Muhammad Aamir, Mohadeseh Najafi, Majid Tolouei-Rad
Impact Of Biodegradation On The Mechanical And Fatigue Properties Of 3d-Printed Pla Bone Scaffolds, Hamed Bakhtiari, Alireza Nouri, Muhammad Aamir, Mohadeseh Najafi, Majid Tolouei-Rad
Research outputs 2022 to 2026
A proper degradation rate of bone scaffolds ensures optimal mechanical support and effective tissue regeneration. The present study examines the degradation effects of simulated body fluids (SBF) on the compressive and fatigue strength of 3D-printed PLA bone scaffolds. Scaffolds with varying surface-to-volume (S/V) ratios and identical porosity (60 %) were immersed in Hanks' solution for a maximum period of 30 days. Static and dynamic compression tests were performed at different immersion times to assess how S/V ratio influences the degradation process. CT images showed that scaffold pore structure remained interconnected after biodegradation, with no significant change in strut thickness or …
3d Printing Of Short Fiber Reinforced Polypropylene: Novel Lattice Architecture And Material Characterization, Mohammad Ghazi Alshneeqat
3d Printing Of Short Fiber Reinforced Polypropylene: Novel Lattice Architecture And Material Characterization, Mohammad Ghazi Alshneeqat
Theses
This study explores the enhanced compressive behavior of 3D-printed single and double gyroid solid-networks lattices. Where the double gyroids are constructed from two intertwined single gyroid structures. These structures were designed by nTop implicit modeling tool and then fabricated by material extrusion additive manufacturing method at optimized printing parameters, including optimized nozzle temperature and raster angle. The main objective of this study is to reveal the compressive behavior of the novel double gyroid lattice structure and then to tailor its response through variable gyroid heights. Standard polymer tests were performed, considering thermogravimetric analysis, to confirm the thermal stability of the …