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Full-Text Articles in Engineering
Stability And Interfacial Viscoelasticity Of Oil-Water Nanoemulsions Stabilized By Soy 2 Lecithin And Tween 20 For The Encapsulation Of Bioactive Carvacrol, Jerome J. Nash, Kendra Erk
Stability And Interfacial Viscoelasticity Of Oil-Water Nanoemulsions Stabilized By Soy 2 Lecithin And Tween 20 For The Encapsulation Of Bioactive Carvacrol, Jerome J. Nash, Kendra Erk
School of Materials Engineering Faculty Publications
The rheology of oil-in-water (O/W) droplet interfaces stabilized by food-grade emulsifiers (soy lecithin or Tween 20) under controlled aqueous conditions was investigated to elucidate its contribution in the kinetic stabilization of nanoemulsion-based delivery systems containing carvacrol, a naturally-derived antimicrobial compound. Dilational rheology of surfactant-laden O/W interfaces was measured using axisymmetric drop shape analysis. The kinetic stability of corresponding nanoemulsions (containing mixtures of carvacrol and medium-chain triglyceride (MCT) oil dispersed in water (pH 7)) was characterized using dynamic light scattering. Zwitterionic lecithin molecules adsorbed to the O/W interface for 24 h formed a notably viscoelastic layer, compared to nonionic Tween 20 …
Using Everyday Objects To Engage Students In Standards Education, Margaret Phillips, Paul Mcpherson
Using Everyday Objects To Engage Students In Standards Education, Margaret Phillips, Paul Mcpherson
Libraries Faculty and Staff Presentations
This paper describes an innovative approach to standards education in an undergraduate mechanical engineering technology design course. The work is focused on making standards appeal to students by using “everyday objects” (e.g. toaster, ladder, grill, etc.) as catalysts to introduce the topic of standards in a way that connects to students’ daily lives. The project involves instructor-librarian collaboration to incorporate information literacy and campus library resources into the standards curricula, so that students not only become familiar with standards resources, but also proficient at searching for and locating the documents. Preliminary results and observations indicate this is an effective approach …
The Relationship Between Intermittent Limit Cycles And Postural Instability Associated With Parkinson’S Disease, James R. Chagdes, Jessica E. Huber, Meredith Saletta, Meghan Darling-White, Arvind Raman, Shirley Rietdyk, Howard N. Zelaznik, Jeffrey M. Haddad
The Relationship Between Intermittent Limit Cycles And Postural Instability Associated With Parkinson’S Disease, James R. Chagdes, Jessica E. Huber, Meredith Saletta, Meghan Darling-White, Arvind Raman, Shirley Rietdyk, Howard N. Zelaznik, Jeffrey M. Haddad
School of Mechanical Engineering Faculty Publications
Background: Many disease-specifc factors such as muscular weakness, increased muscle stiffness, varying postural strategies, and changes in postural refexes have been shown to lead to postural instability and fall risk in people with Parkinson’s disease (PD). Recently, analytical techniques, inspired by the dynamical systems perspective on movement control and coordination, have been used to examine the mechanisms underlying the dynamics of postural declines and the emergence of postural instabilities in people with PD. Methods: A wavelet-based technique was used to identify limit cycle oscillations (LCOs) in the anterior–posterior (AP) postural sway of people with mild PD (n = 10) compared …