Darryl N. Williams

Darryl N. Williams
The Franklin Institute · Science and Education

PhD

About

18
Publications
4,842
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605
Citations
Additional affiliations
April 2013 - March 2016
Tufts University
Position
  • Professor (Associate)

Publications

Publications (18)
Article
Full-text available
Encouraging persistence, success, and interest in science, technology, engineering, and mathematics (STEM) fields of study continues to be a point of emphasis across the United States. While there does exist a body of research exploring STEM education and STEM learning, less is understood about the informal factors that may encourage STEM pursuit....
Article
Full-text available
There is a well-established body of literature regarding how formal aspects of school impact high school students’ interest, achievement, and persistence in science, technology, engineering, and mathematics (STEM) fields. However, less is known regarding the influence of informal factors (e.g., parents, social groups) on these STEM outcomes. This s...
Article
Full-text available
In this study, we synthesized the literature on how informal contexts, namely friends and family social groups, shape high school students’ likelihood of pursuing advanced math and science coursework. Extending scholarly understandings of STEM education, we turned to the body of literature with three guiding questions: (1) What influence do friends...
Conference Paper
Full-text available
In the 21st century, the global knowledge economy faces numerous challenges, which can only be surmounted through the full participation and equal regard of all diverse talents. In engineering education this broadening of participation is of paramount importance, as this field grapples first-hand with how to effectively address many of these global...
Technical Report
Full-text available
This report is the result of an NSF-funded landscape analysis of K-12 engineering education in the Greater Boston region conducted by Tufts University and Education Development Center (EDC). Stakeholders, such as NSF funded researchers, educators, industry representatives, and policymakers are increasingly committed to making engineering education...
Article
This paper presents an exploratory investigation of global scale diversity and inclusion efforts within engineering education. The content is an expansion of work that was shared at the 2015 World Engineering Education Forum’s first special session on “Diversity & Inclusion in Global Engineering.” Diversity and Inclusion (D&I) are contextualized to...
Chapter
In this book chapter, the authors discuss the history of the development and implementation of pre-college engineering programs aimed at underrepresented students, and particularly African American youth. The chapter highlights the successes of three well established programs, while outlining the challenges and opportunities for the future growth,...
Conference Paper
Full-text available
This paper presents an exploratory investigation of global scale diversity and inclusion efforts within engineering education. Diversity and Inclusion (D&I) are contextualized topics that shift objectives from country to country. The role of D&I in engineering education and practice has gained prominence in recent years due to the fact that enginee...
Article
Full-text available
To develop a more robust understanding of the relationship between non-formal, schoolbased STEM activities and students' success and persistence in STEM fields, this study evaluates how math club participation influences math GPA and how science club participation influences science GPA. Additionally, this study evaluates how math or science club p...
Article
Science and technology are at a critical juncture, not only in the United States, but globally with regard to the increasing lack of interest and subsequent decline in the entrance of students into science, technology, engineering, and mathematics (STEM) related careers. With studies taking place on an international scale to determine how best to a...
Article
Full-text available
A cell delivery strategy was investigated that was hypothesized to enable magnetic targeting of endothelial cells to the steel surfaces of intraarterial stents because of the following mechanisms: (i) preloading cells with biodegradable polymeric superparamagnetic nanoparticles (MNPs), thereby rendering the cells magnetically responsive; and (ii) t...
Article
Full-text available
Magnetite nanoparticles were synthesized and functionalized by coating the particle surfaces with gum arabic (GA) to improve particle stability in aqueous suspensions (i.e. biological media). Particle characterization was performed using transmission electron microscopy (TEM) and dynamic light scattering (DLS) to analyze the morphology and quantify...
Article
Full-text available
In order to enhance the utilization of inorganic nanoparticles in biological systems, it is important to develop a fundamental understanding of the influence they have on cellular health and function. Experiments were conducted to test silica, silica/iron oxide, and gold nanoparticles for their effects on the growth and activity of Escherichia coli...
Article
Full-text available
Objective: This study focuses on developing a treatment for in-stent restenosis (ISR), the re-obstruction of a stented artery following arterial angioplasty. This work involves creating a system for the delivery of magnetic nanoparticle (NP) loaded endothelial precursor cells to magnetically responsive stents. The goal of this research is to unders...
Article
Full-text available
Gene therapy has shown promise; however few methods are available for site-specific gene vector delivery. To address this problem, we employed magnetized implants to localize magnetically responsive nanoparticles (MNP) carrying a surface immobilized recombinant adenovirus (AdV) receptor protein domain, D1. The MNP were formed by a modified emulsifi...
Article
Magnetic nanoparticles (MNPs) have found increased applicability in drug delivery, cancer treatment, and immunoassays. There is a need for an improved understanding of how MNPs interact with living cell membranes in applied magnetic fields to use them effectively. The interactions between Escherichia coli (E. coli) and Si O <sub>2</sub>/γ- Fe <sub>...
Article
Full-text available
Thesis research directed by: Chemical Engineering. Title from t.p. of PDF. Thesis (Ph. D.) -- University of Maryland, College Park, 2004. Includes bibliographical references. Text.
Article
Infection activates immune response pathways in host macrophages and lymphocytes that might be of sufficient magnitude to facilitate early diagnoses of infections through a host immune biosignature. Attenuated total reflectance (ATR) infrared spectroscopy was used to examine the spectroscopic signatures of living mouse macrophage cells before and a...

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