Evolution of Occupational Therapy Practice: Life History of Art (Arthur) Heinze

Objective. The purpose of this qualitative study was to gather information about the history and evolution of occupational therapy (OT) practice in North Dakota and Wyoming through the life histories of individuals who have been influential in developing OT in these two states. Method. An in-depth interview was completed with Art, his wife, and the two occupational therapy students who were conducting the research. Themes regarding his career path were synthesized from the interview data and compared with the history of the OT profession. Results. There were 14 codes developed and placed into three categories. Ten themes emerged from the analysis. The findings indicate that Art had a positive impact on the evolution of the profession. Conclusion. Art’s life journey, including his personal and professional beliefs, has allowed him to play a prominent role in laying the foundation for OT to flourish in North Dakota and Northwestern Minnesota as a bilateral amputee

Life History of Art (Arthur) Heinze, OTR/L

This life history is one of 29 life history interviews which are a part of a larger project, Life Histories of Individuals Who Have Been Influential in Developing Occupational Therapy (OT) in North Dakota and Wyoming. The purpose of the project is to gather information about the history and evolution of OT practice in North Dakota and Wyoming through life histories of individuals who have been influential in developing OT in these two states. It is anticipated that the life history process will be a powerful way to gather this information. This study is intended to provide current and future generations of occupational therapists a view of the history and how OT practice has evolved from its inception to current practice in North Dakota and Wyoming.https://commons.und.edu/ot-oral-histories-posters/1000/thumbnail.jp

Wellness Programming for Men in Long-Term Care

Introduction: The purpose of this project was to develop a wellness guide for staff to implement in long-term care (LTC), to increase participation of meaningful activities and well-being for male residents of all abilities, both physically and psychosocially. Methodology: A literature review was conducted to understand the need for activities of male residents in LTC. Sources included: online databases, textbooks, and government websites. The Canadian Model of Occupational Performance and Engagement (CMOPE) was selected to direct the development of the program guide. The CMOP-E promotes engagement in occupations and enablement of occupational performance, both of which are important for male residents in LTC. Results: Throughout the literature review, the importance of activities and the need to match interest preferences of male residents in LTC was emphasized. Based on demographics, the majority of residents are typically female. Too often activities are geared toward the interests of females rather than males, which indicated the need for a program guide. The guide for Wellness Programming for Men in Long-Term Care was designed to address the specific needs of males in LTC. The program guide provides activities, modifications and enablement skill recommendations for LTC staff to use in meeting the needs of male residents through meaningful activities. Conclusions: Following older men’s transition into LTC, it is important for male residents to engage in meaningful activities to assist with changes, both physically and psychosocially. By implementing the program guide, LTC staff can encourage male residents to engage in occupations that are meaningful and increase well-being, regardless of one’s abilities

Mixer Assembly for a Gas Turbine Engine

A mixer assembly for a gas turbine engine is provided, including a main mixer with fuel injection holes located between at least one radial swirler and at least one axial swirler, wherein the fuel injected into the main mixer is atomized and dispersed by the air flowing through the radial swirler and the axial swirler

MMM2D: A fast and accurate summation method for electrostatic interactions in 2D slab geometries

We present a new method, in the following called MMM2D, to accurately calculate the electrostatic energy and forces on charges being distributed in a two dimensional periodic array of finite thickness. It is not based on an Ewald summation method and as such does not require any fine-tuning of an Ewald parameter for convergence. We transform the Coulomb sum via a convergence factor into a series of fast decaying functions which can be easily evaluated. Rigorous error bounds for the energies and the forces are derived and numerically verified. Already for small systems our method is much faster than the traditional 2D-Ewald methods, but for large systems it is clearly superior because its time demand scales like O(N^{5/3}) with the number N of charges considered. Moreover it shows a rapid convergence, is very precise and easy to handle.Comment: 29 pages, 6 figures, needs elsart.cls (provided

Simulations of Solid-on-Solid Models of Spreading of Viscous Droplets

We have studied the dynamics of spreading of viscous non-volatile fluids on surfaces by MC simulations of SOS models. We have concentrated on the complete wetting regime, with surface diffusion barriers neglected for simplicity. First, we have performed simulations for the standard SOS model. Formation of a single precursor layer, and a density profile with a spherical cap shaped center surrounded by Gaussian tails can be reproduced with this model. Dynamical layering (DL), however, only occurs with a very strongly attractive van der Waals type of substrate potential. To more realistically describe the spreading of viscous liquid droplets, we introduce a modified SOS model. In the new model, tendency for DL and the effect of the surface potential are in part embedded into the dynamics of the model. This allows a relatively simple description of the spreading under different conditions, with a temperature like parameter which strongly influences the droplet morphologies. Both rounded droplet shapes and DL can easily be reproduced with the model. Furthermore, the precursor width increases proportional to the square root of time, in accordance with experimental observations. PACS: 68.10.Gw, 05.70.Ln, 61.20.Ja.Comment: to appear in Physica A (1994), standard LaTex, 20 page

Fast diffusion of a Lennard-Jones cluster on a crystalline surface

We present a Molecular Dynamics study of large Lennard-Jones clusters evolving on a crystalline surface. The static and the dynamic properties of the cluster are described. We find that large clusters can diffuse rapidly, as experimentally observed. The role of the mismatch between the lattice parameters of the cluster and the substrate is emphasized to explain the diffusion of the cluster. This diffusion can be described as a Brownian motion induced by the vibrationnal coupling to the substrate, a mechanism that has not been previously considered for cluster diffusion.Comment: latex, 5 pages with figure

Ewald methods for polarizable surfaces with application to hydroxylation and hydrogen bonding on the (012) and (001) surfaces of alpha-Fe2O3

We present a clear and rigorous derivation of the Ewald-like method for calculation of the electrostatic energy of the systems infinitely periodic in two-dimensions and of finite size in the third dimension (slabs) which is significantly faster than existing methods. Molecular dynamics simulations using the transferable/polarizable model by Rustad et al. were applied to study the surface relaxation of the nonhydroxylated, hydroxylated, and solvated surfaces of alpha-Fe2O3 (hematite). We find that our nonhydroxylated structures and energies are in good agreement with previous LDA calculations on alpha-alumina by Manassidis et al. [Surf. Sci. Lett. 285, L517, 1993]. Using the results of molecular dynamics simulations of solvated interfaces, we define end-member hydroxylated-hydrated states for the surfaces which are used in energy minimization calculations. We find that hydration has a small effect on the surface structure, but that hydroxylation has a significant effect. Our calculations, both for gas-phase and solution-phase adsorption, predict a greater amount of hydroxylation for the (012) surface than for the (001) surface. Our simulations also indicate the presence of four-fold coordinated iron ions on the (001) surface.Comment: 23 pages, REVTeX (LaTeX), 8 figures not included, e-mail to [email protected], paper accepted in Surface Scienc

Quantification of genes and gene transcripts for microbial perchlorate reduction in fixed‐bed bioreactors

Aims:  Optimization of full‐scale, biological perchlorate treatment processes for drinking water would benefit from knowledge of the location and quantity of perchlorate‐reducing bacteria (PRB) and expression of perchlorate‐related genes in bioreactors. The aim of this study was to quantify perchlorate removal and perchlorate‐related genes ( pcrA and cld ) and their transcripts in bioreactors and to determine whether these genes or transcripts could serve as useful biomarkers for perchlorate treatment processes. Methods and Results:  Quantitative PCR (qPCR) assays targeting pcrA and cld were applied to two pilot‐scale, fixed‐bed bioreactors treating perchlorate‐contaminated groundwater. pcrA and cld genes per microgram of DNA were two‐ to threefold higher and three‐ to fourfold higher, respectively, in the bioreactor showing superior perchlorate‐removal performance. In a laboratory‐scale bioreactor, quantities of pcrA and cld genes and transcripts were compared under two distinct performance conditions ( c.  60 and 20% perchlorate removal) for a 5‐min empty bed contact time. cld genes per microgram of DNA were approximately threefold higher and cld transcripts per microgram of RNA were approximately sixfold higher under the higher perchlorate‐removal condition. No differences in pcrA genes or transcripts per microgram of DNA or RNA, respectively, were detected between the c.  60 and 20% perchlorate‐removal conditions, possibly because these assays did not accurately quantify pcrA genes and transcripts in the mixed culture present. Conclusions:  Quantities of cld genes and transcripts per microgram of DNA and RNA, respectively, were found to be higher when perchlorate removal was higher. However, quantities of pcrA and cld genes or transcripts were not found to directly correlate with perchlorate‐removal rates. Significance and Impact of the Study:  To our knowledge, this study represents the first application of qPCR assays to quantify perchlorate‐related genes and transcripts in continuous‐flow bioreactors. The results indicate that cld gene and transcript quantities can provide insights regarding the quantity, location and gene expression of PRB in bioreactors.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/90307/1/JAM_5225_sm_FigS1.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/90307/2/JAM_5225_sm_FigS2.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/90307/3/j.1365-2672.2011.05225.x.pd

Herringbone ordering and lattice distortions in a planar-molecule model for Langmuir monolayers

A model of planar molecules, made up of "atoms" interacting by Lennard-Jones potentials and arranged to mimic the cross section of alkyl chains, is used to study the problem of backbone plane ordering in Langmuir monolayers. It is shown that two minima of the interaction energy are reached if molecules lie on the sites of a centered rectangular lattice in a herringbone configuration with two different dihedral angles. These orientationally ordered phases can be related to the so-called herringbone and pseudoherringbone structures, whose lattice distortions qualitatively agree with those determined by means of grazing incidence x-ray diffraction experiments on Langmuir monolayers. A third energy minimum is obtained for a configuration of parallel molecules on an oblique lattice, which has also been observed in some experiments. The competition between the three phases is investigated, upon varying geometric parameters of the model molecules and surface pressure. The effect of temperature is analyzed in a mean field approximation, by taking into account the orientational entropy contribution on a lattice system with variable unit cell parameters. In this framework the transition to an orientationally disordered phase is also pointed out