Approaches for modeling magnetic nanoparticle dynamics

Magnetic nanoparticles are useful biological probes as well as therapeutic agents. There have been several approaches used to model nanoparticle magnetization dynamics for both Brownian as well as N\'eel rotation. The magnetizations are often of interest and can be compared with experimental results. Here we summarize these approaches including the Stoner-Wohlfarth approach, and stochastic approaches including thermal fluctuations. Non-equilibrium related temperature effects can be described by a distribution function approach (Fokker-Planck equation) or a stochastic differential equation (Langevin equation). Approximate models in several regimes can be derived from these general approaches to simplify implementation

A Corps of Much Service: The German Regiment of the Continental Army

The German Regiment was a unit raised for service in the Continental Army in the summer of 1776 from among the ethnic German populations of Pennsylvania and Maryland, which saw service in late 1776 at the Battle of Trenton and in early 1777 at the Battles of Assunpink Creek (Second Trenton) and Princeton. This thesis to examines the role of the regiment from the time it was raised to the aftermath of the campaign in New Jersey and Pennsylvania in late 1776 and 1777, emphasizing the social makeup of the regiment\u27s officers and men, and its place as an ethnic regiment in America\u27s first professional army

UXperimentation: The Library as Design Studio

The university and seminary’s work and workplaces evolve within emerging digital ecologies, such as mobile communication, digital fabrication, and cloud hosting. At Abilene Christian University (ACU) in Abilene, TX, we have driven this transformation of educational spaces and curriculum with 1-to-1 and BYOD smartphone and tablet initiatives, and through construction of an interdisciplinary makerspace. Now our provision of personalized access to Adobe Creative Cloud for all students and faculty is again reorienting library spaces and practices with a focus on User Experience (UX). This paper explores: 1) the relation of UXD to library research and instruction. 2) an ecology for UXD and other design thinking in university academic support services, and 3) a trajectory beyond computer labs, media studios, and digital scholarship centers as library learning space

ATLA as Community of Faith: Surveying Members’ Relationship to Religious Faith and ATLA

This paper reports the result of an online survey, entitled “ATLA as a Community of Faith,” which was distributed to ATLA’s 519 members in May 2015. The results of the survey show the diversity of religious beliefs and practices among members of ATLA. The survey also provides evidence that the vast majority of the members of ATLA are professing practitioners of the Christian faith

Physicians License - 1806, July

Physician\u27s License authorized by the State of North Carolina certifying that Dr. William Perry Andrews may practice medicine. Signed by John B. Weaver.https://digitalcommons.gardner-webb.edu/fay-webb-gardner-william-perry-andrews/1015/thumbnail.jp

Generalized Scaling and the Master Variable for Brownian Magnetic Nanoparticle Dynamics

Understanding the dynamics of magnetic particles can help to advance several biomedical nanotechnologies. Previously, scaling relationships have been used in magnetic spectroscopy of nanoparticle Brownian motion (MSB) to measure biologically relevant properties (e.g., temperature, viscosity, bound state) surrounding nanoparticles in vivo. Those scaling relationships can be generalized with the introduction of a master variable found from non-dimensionalizing the dynamical Langevin equation. The variable encapsulates the dynamical variables of the surroundings and additionally includes the particles’ size distribution and moment and the applied field’s amplitude and frequency. From an applied perspective, the master variable allows tuning to an optimal MSB biosensing sensitivity range by manipulating both frequency and field amplitude. Calculation of magnetization harmonics in an oscillating applied field is also possible with an approximate closed-form solution in terms of the master variable and a single free parameter

Contributors to the November Issue/Notes

Notes by John De Mots, Joseph B. Shapero, William Langley, Rex E. Weaver, George E. Murphy, and Carl Doozan