bluuebunny/crossref_metadata_2025 huggingface dataset:
Methods for Inhibition of Fluidity Loss of Concrete Mixed with Superplasticizers
Authors: Zhu Wen Xian , Sun Zhen Ping , Liu Yi , Li Dang Yi
Published: February 2016

The slump loss of fresh concrete mixed with superplasticizers should be well controlled to ensure its transportation and pumping. In this paper, we describe a comprehensive overview of the mechanism of fluidity loss and then analyze the reason for the change. Researches show that the slump loss of fresh concrete is influenced by the mineral composition of cement clinker, the type and characteristics of aggregate, the species and dosage of admixture, the mix proportion and the construction environment, etc. Thus, a series of methods proven to be effective, such as adjustment of raw materials, adding methods of chemical admixture, synthesis of new types of superplasticizers, etc. have been proposed to solve the problems.
Research Progress of Crumb Rubber Mortar
Authors: Zhu Wen Xian , Sun Zhen Ping , Shui Liang Liang , Chen Ke Ke , Li Dang Yi
Published: February 2016

Crumb rubber mortar, modified with rubber from worn automobile tires, enjoy a promising prospect in applications. This paper presents a comprehensive overview of the research progress of cement mortar containing crumb rubber on its performance such as interface treatment,workability,mechanical properties,durability and insulation in fresh and hardened phases respectively.
Water-Based Route to Synthesis of High-Quality UV-Blue Photoluminescing ZnSe/ZnS Core/Shell Quantum Dots and their Physicochemical Characterization
Authors: Ding Yong Ling , Sun Hua Dong , Sun Kang Ning , Liu Fu Tian
Published: February 2016

Epitaxially overgrowing a semiconductor material with higher bandgap around the QDs has proven to be a crucial approach for improving the PL efficiency and stability of nanocrystals. In this paper, a ZnS shell was deposited around ZnSe nanocrystal cores via a noninjection approach in aqueous media. The deposition procedure conducted at 100°C in a reaction flask in the presence of the shell precursor compounds, together with the crude ZnSe nanocrystal cores and the thiol ligand glutathione. The influences of various experimental variables, including the reaction time, amount of thiourea, as well as pH value, on the growth rate and luminescent properties of the obtained core/shell nanocrystals have been systematically investigated. In comparison with the original ZnSe nanocrystals, the PL efficiency of the obtained ZnSe/ZnS core/shell nanostructures can be improved significantly with a QY up to 62.8%.
High Temperature Oxidation Behavior of Silicon Carbide Ceramic
Authors: Chen Ming Wei , Qiu Hai Peng , Jiao Jian , Wang Yu , Xie Wei Jie
Published: February 2016

Oxidation thermodynamics of silicon carbide (SiC)ceramic was studied by means of HSC Chemistry code, and the weight change, morphology and phase of oxidation products were analyzed by thermogravimetric analysis(TG), scanning electron microscopy(SEM ) and X-ray diffraction (XRD). The results showed that SiC ceramic could be oxidized to silicon dioxide(SiO2) with release of small molecular gases under oxidizing atmosphere at 800°C, and the formed SiO2 film with appropriate fluidity and low oxygen diffusion coefficient could prevent the spread of oxygen with the oxidation temperature increasing up to 1200°C, which favored the anti-oxidation of SiC ceramic matrix composite.
The Influence of Equivalent Contact Area Computation in 3D Extended Node to Surface Contact Elements
Authors: Wautelet Gaetan , Papeleux Luc , Ponthot Jean Philippe
Published: February 2016

This paper extends the frictionless penalty-based node to contact formulation with area regularization to a 3D framework. Based on our previous work [1] focused on axisymmetric modeling, two computational methods are also considered for the determination of the slave node area. The first method, named as the geometrical approach, is based on a force equivalence system, while the second one, named as the consistent approach, is derived from a more sophisticated scheme elaborated upon the virtual work principle. Then, the extended contact elements are derived for the contact formulations with geometrical and consistent area regularization and a consistent linearization is provided accordingly, which guarantees a quadratic rate of convergence of the global Newton Raphson iterative procedure. Finally, two numerical examples assess the performance of both contact formulations with area regularization and demonstrates the robustness and the efficiency of the node to surface contact formulation with consistent area regularization in reproducing a constant contact pressure distribution across the interface between a deformable body and a analytically-defined rigid body, irrespective of the mesh. Our findings will certainly encourage further developments towards the design of a penaltybased node to surface contact algorithm passing the contact patch test, as was already done successfully in 2D contact problems [2].
Investigation of Homogenization Process of the 5019 Alloy Extrusion Billets
Authors: Woźnicki Antoni , Lesniak Dariusz , Włoch Grzegorz , Wojtyna Alicja , Zabrzańska Monika
Published: February 2016

In the paper, the influence of homogenization parameters on the microstructure and properties of the 5019 alloy DC-cast billets was analysed. At the first stage, the microstructure of the alloy in as-cast state was investigated using SEM/EDS technique. Additionally, a DSC test and hardness measurements were performed. In the as-cast material, the presence of the dendritic microstructure with a pronounced microsegregation of magnesium in the dendrites cross-section was found. Subsequently, the specimens were subjected to laboratory homogenization experiments, with different soaking conditions and water quenching. The microstructural effects of the investigated variants of homogenization were evaluated using the same techniques as in the case of the as-cast alloy. It was found that after homogenization, with soaking at the temperature of 530 °C for 6 hours, the microsegregation is eliminated and the concentration of magnesium in the grains centres is over two times greater than in the dendrites cores before annealing. The solidus temperature rises by about 12 °C in comparison to the as-cast state. Neither extending the soaking time nor rising the temperature contributes to a further increase of the solidus temperature, or the magnesium concentration in the grains interiors. However, the tendency of dispersoids to grow and the change of Fe-bearing constituents chemical composition were observed after the high temperature, or prolonged annealing variants.
New Type of Lightweight Railway Overhead Line Carrying Equipment
Authors: Kwaśniewski Paweł , Knych Tadeusz , Kiesiewicz Grzegorz , Mamala Andrzej , Ściężor Wojciech , Jabłoński Michał , Kawecki Artur , Kowal Radosław , Kordaszewski Szymon , Franczak Krystian , Bogacki Adolf , Greguła Ryszard , Błędowski Leszek , Rojek Artur , Majewski Wiesław
Published: February 2016

Traditional carrying equipment that is being still used in polish railway system for dozens of years is based on typical steel profiles with low mechanical strength, low corrosion resistance and also with poor assembly and adjustment possibilities. Major part of other overhead railway equipment like support constructions, trolley wires and current carrying equipment is now modernized leaving the carrying system one of the lasts that needs to be redesigned and optimized to meet nowadays requirements for high speeds of railway travel. For that direct reason a project was started to conduct research works on design and development of the new type of railway overhead carrying equipment with enhanced exploitation properties. Within this articles authors presented a complete set of research results including designing of first concepts, FEM simulation and experimental research results including tests on final geometries in actual railway traffic. Performed studies and design works allowed to obtain an innovative overhead railway carrying system which is based on 6082 aluminum alloy and new geometry of used profiles and connection system.
Research results conducted and presented within article are a part of the project co-founded by The National Centre for Research and Development.
Influence of Al and Fe Additions on Structure and Properties of Cu-Sn Alloys
Authors: Garbacz-Klempka Aldona , Czekaj Edward , Kozana Janusz , Perek-Nowak Małgorzata , Piękoś Marcin
Published: February 2016

The studies regard analysis of variable Al and Fe additions on the chosen group of CuSn alloys. The group of tin bronzes known and applied for thousands of years has still found its application in many branches of industry, however it was observed that small amounts of aluminum and iron may affect the original properties strongly. The changes of mechanical properties and microstructure is discussed in detail. Aside of many advantageous properties of these bronzes, it is noted that the mentioned alloying additions have beneficial effect on the gas-induced shrinkage porosity. Simultaneously, the effect of the aluminum addition on the characteristic phase transformation points was determined basing on the analysis of calorimetric curves. The results are correlated with microstructure observations.
Structure Evolution in Annealed and Hot Deformed AlMg-CeO2 Composite
Authors: Skrzekut Tomasz , Kula Anna , Blaz Ludwik
Published: February 2016

A brief review of structural investigation and results of mechanical tests for mechanically alloyed AlMg-based composite reinforced with 9 wt.% addition of CeO2 is presented. The as extruded and annealed samples were examined by means of SEM, TEM and X-ray analysis. Heavily refined matrix grains and particles of cerium oxides were observed in the as extruded material. Fine microstructure attained by mechanical alloying and high affinity of oxygen to aluminum-magnesium matrix results in promoted solid state reactions between the matrix and reinforcements at elevated temperatures. Consequently, Al4Ce intermetallic grains and Al/Mg oxides are formed in the result of CeO2 decomposition. Hot compression tests were performed at constant true strain rate of 5·10-3 s-1 within the temperature range of 293 – 823K. Highly refined structure of the material was found to result in high strength of the composite, particularly for samples tested at low and intermediate temperatures.
Recycling without Melting: An Alternative Approach to Aluminum Scrap Recovery
Authors: Wędrychowicz Mateusz , Wzorek Łukasz , Tokarski Tomasz , Noga Piotr , Wiewióra Jakub
Published: February 2016

Method of scrap recovery by hot extrusion in a contrast to traditional aluminum recycling process distinguishes itself with a low energy consumption and high recovery efficiency. Additionally, this type of recycling allows to recover materials even from highly fragmented forms of metal like chips, foils or filings by omitting melting procedure. In the present study results of 413.0 aluminum chips plastic consolidation will be presented. Chips after machining process were used as a charge material for the entire recycling process. In order to determined the best emulsion elimination method, three separate processes such as centrifugation, annealing and pressing were carried out. In result dry, wet and cleaned chips in a form of cylindrical billets were hot extruded into longitudinal square cross-section profiles. Mechanical properties were examined by uniaxial tensile tests while microstructure observations were performed by means of scanning electron microscopy. It has been showed that emulsion elimination by annealing gives the best results while at the same time all extruded materials revealed no significant differences in mechanical properties.
The Effect of Homogenization and Interrupted Rolling on Microstructure and Properties of Zn-Cu-Ti Rolled Sheets
Authors: Osuch Piotr , Walkowicz Monika , Knych Tadeusz , Mamala Andrzej
Published: February 2016

Due to specific application of the Zn-Cu-Ti alloy rolled sheets as a roofing material, ready-made sheets has to meet some specific requirements of bendability at relatively low temperatures, as low as 5°C. In the current paper it was shown that susceptibility of the Zn-Cu-Ti sheets to low temperature bending, is closely related to degree of its dynamic recrystallization during rolling process. The paper discusses effect of different technological routes on the microstructure, mechanical properties and in particular the low temperature performance of Zn-Cu-Ti rolled sheets. The experimental results shows that the homogenization of Zn-Cu-Ti casted strips at the pre-rolling stage can play important role in recrystallization of the sheets during rolling. The current work is part of research on designing new technological route.
The Range of the Occurrence of α Phase in near β Titanium Alloys
Authors: Krawczyk Janusz , Frocisz Łukasz , Dąbrowski Robert , Rożniata Edyta , Śleboda Tomasz
Published: February 2016

Two near β titanium alloys (Ti-3Al-8V-6Cr-4Mo-4Zr and Ti-10V-2Fe-3Al) were investigated in his research. Both materials contained disperse precipitations of α phase in β phase matrix. In the case of Ti-3Al-8V-6Cr-4Mo-4Zr alloy clear segregation of alloy constituents, resulting from casting process, were observed. This segregation caused different susceptibility to α phase precipitation in dendritic and interdendritic areas in the microstructure of the investigated alloy. The influence of the temperature, strain and processing time on α phase dissolution was determined. Gleeble compression tests were performed on both of the investigated alloys. The research showed different character of the influence of strain rate and processing time on the temperature of α phase dissolution for each alloy. The effect of heat treatment on α phase dissolution during ageing of the investigated alloys was also determined. The possibility of obtaining homogenous microstructure in these alloys by properly designed heat treatment was also discussed.
Mucosal Humoral Immune Response to SIVmac239∆nef Vaccination and Vaginal Challenge
Authors: Zeng Ming , Smith Anthony J. , Shang Liang , Wietgrefe Stephen W. , Voss James E. , Carlis John V. , Li Qingsheng , Piatak Michael , Lifson Jeffrey D. , Johnson R. Paul , Haase Ashley T.
Published: February 2016

Live attenuated vaccines such as SIV with a deleted nef gene have provided the most robust protection against subsequent vaginal challenge with wild-type (WT) SIV in the SIV–rhesus macaque model of HIV-1 transmission to women. Hence, identifying correlates of this protection could enable design of an effective HIV-1 vaccine. One such prechallenge correlate of protection from vaginal challenge has recently been identified as a system with three components: 1) IgG Abs reacting with the viral envelope glycoprotein trimeric gp41; 2) produced by plasma cells in the submucosa and ectopic tertiary lymphoid follicles in the ectocervix and vagina; and 3) concentrated on the path of virus entry by the neonatal FcR in the overlying epithelium. We now examine the mucosal production of the Ab component of this system after vaginal challenge. We show that vaginal challenge immediately elicits striking increases in plasma cells not only in the female reproductive tract but also at other mucosal sites, and that these increases correlate with low but persistent replication at mucosal sites. We describe vaginal ectopic follicles that are structurally and functionally organized similar to follicles in secondary lymphoid organs, and we provide inferential evidence for a key role of the female reproductive tract epithelium in facilitating Ab production, affinity maturation, and class switch recombination. Vaccination thus accesses an epithelial–immune system axis in the female reproductive tract to respond to exposure to mucosal pathogens. Designing strategies to mimic this system could advance development of an effective HIV-1 vaccine.
Enumeration of coliform bacteria and characterization of Escherichia coli isolated from Staff Club swimming pool in Ile-Ife, Nigeria
Authors: Akeju Tolutope O. , Awojobi Kehinde O.
Published: February 2016

Water recreation, though increasing globally, is strongly associated with infectious diseases. Unexpectedly, artificial water recreation systems e.g. swimming pools account for 90% of these outbreaks. It is therefore essential that pool waters be regularly monitored for deviations from microbial water quality guidelines. To assess the sanitary quality of a club swimming pool in Ile-Ife, Nigeria, we used the multiple-tube fermentation technique to determine the most probable number (MPN) of coliform bacteria in 100 mL of pool water. MPN estimates ranged from 9 to 93 with geometric mean of 38. Escherichia coli was isolated from positive presumptive tubes, indicating recent fecal contamination. The isolate elicited similar biochemical reactions as reference E. coli (25922), except that it utilized sucrose and liquefied gelatin, which probably indicates potential pathogenicity. Also, the E. coli isolate was resistant to 13 antibiotics from 9 different classes. Finally, coliform counts and detection of E. coli clearly violates international guidelines. We recommend that pool operators increase water disinfection efficiency and educate the public on the need for improved swimmer hygiene to reduce the risk of recreational water illness transmission.
Bacterial population profiling from diesel obtained from fuel stations
Authors: Venter Eduard , Sibisi Phumzile , Van de Haar Natasha , Jacobs Adriaana
Published: February 2016

Microbial growth develops in stored diesel fuel. This can influence later use in emergency backup generators and vehicles through the clogging of fuel filters by the development of biomass. A mutualistic microbial community can develop in stored fuel products that degrade polycyclic aromatic hydrocarbons to the benefit of one another. This project aimed to study the bacterial community profile of diesel obtained from commercial fuel stations using culture dependent and independent methods. Bacteria and total DNA were isolated from the diesel and the community was studied using denaturing gradient gel electrophoresis of the 16S rDNA region. This resulted in the isolation of six bacterial species from two different genera (related to Bacillus and Lysinibacillus) that could grow in pure culture with diesel as carbon source. The denaturing gradient gel electrophoresis analysis indicated the occurrence of an additional eight genera in the sampled diesel. Both methods identified bacteria related to Bacillus pumilus occurring in the samples. Bacillus pumilus was the predominant species (50%) isolated from diesel samples using culture media. The identification of bacteria occurring in commercial diesel samples can be useful in determining the degree of degradation occurring during the storage of the product and also possible bioremediation agents in diesel fuels spills.
Subfactors and Conformal Field Theory
Authors: Bisch Dietmar , Gannon Terry J. , Jones Vaughan F. R. , Kawahigashi Yasuyuki
Published: February 2016

Connections between subfactor theory and conformal field theory have been expected since the early days of the former in 1980’s, and recently we see more and more evidence for deeper relations. It was our aim to attract experts from a wide range of topics related to subfactors and CFT. Many of the participants met for the first time at Oberwolfach, and there were numerous very fruitful interactions.
Tropical Aspects in Geometry, Topology and Physics
Authors: Ekholm Tobias , Markwig Hannah , Mikhalkin Grigory , Shustin Eugenii
Published: February 2016

The workshop
Tropical Aspects in Geometry, Topology and Physics
was devoted to a wide discussion and exchange of ideas between the leading experts representing various points of view on the subject. The development of tropical geometry is based on deep links between problems in real and complex enumerative geometry, symplectic geometry, quantum fields theory, mirror symmetry, dynamical systems and other research areas. On the other hand, new interesting phenomena discovered in the framework of tropical geometry (like refined tropical enumerative invariants) pose the problem of a conceptual understanding of these phenomena in the “classical” geometry and mathematical physics.
Cohomology of Finite Groups: Interactions and Applications
Authors: Adem Alejandro , Benson David J. , Carlson Jon F. , Krause Henning
Published: February 2016

The cohomology of finite groups is an important tool in many subjects including representation theory and algebraic topology. This meeting was the fourth in a series that has emphasized the interactions of group cohomology with other areas.
Enveloping Algebras and Geometric Representation Theory
Authors: Gordon Iain G. , Leclerc Bernard , Soergel Wolfgang
Published: February 2016

The workshop brought together experts investigating algebraic Lie theory from the geometric and categorical viewpoints.
Probabilistic Techniques in Modern Statistics
Authors: Koltchinskii Vladimir , Nickl Richard , Reiß Markus , van de Geer Sara
Published: February 2016

The aim of the workshop was to bring together researchers in modern probability theory and statistics to discuss recent advances and challenging open problems at the intersection of both fields. It focussed on the most promising areas in which fruitful interactions between probability theory and statistics are currently developing.
La televisión y la creación de una nueva identidad española en la Transición (1976-1979)
Authors: Martín Jiménez Virginia , Reguero Sanz Itziar , Vidal Pelaz López José
Published: February 2016

El presente artículo analiza el papel que desempeñó la televisión pública en España (Televisión Española-TVE) a la hora de potenciar la descentralización estatal e impulsar una conciencia autonómica en los primeros años de la Transición democrática (1976-1979). Metodología. La metodología empleada se basa principalmente en un análisis de contenido de los espacios sobre la identidad nacional y la diversidad regional emitidos por TVE durante la etapa ‘del consenso’. El análisis televisivo está enmarcado dentro de un estudio bibliográfico teórico e histórico y, asimismo, matizado por entrevistas en profundidad realizadas a periodistas que trabajaron en la cadena pública. Resultados. Los resultados de esta investigación revelan que, desde la llegada al poder de Unión de Centro Democrático, Televisión Española realizó un discurso a favor de las identidades autonómicas, promoviendo paralelamente un sentimiento de unidad nacional. Discusión. Este hecho reafirma que la pequeña pantalla actuó como un agente público, al servicio del Gobierno presidido por Adolfo Suárez, y a su vez como un instrumento didáctico, transmitiendo a la ciudadanía que la convivencia en España no sería posible si no se aceptaban las peculiaridades de las comunidades autónomas que conforman el país.
Realidad aumentada aplicada al patrimonio histórico molinar
Authors: Castro García Miguel , Rojas Sola José Ignacio , Carranza Cañadas Mª del Pilar
Published: February 2016

The development of computer tools in the last decade is indisputable evidence that is allowing perceive reality more fully through different techniuqes, such as the Augmented Reality (AR). Taking as a starting point Augmented Reality technology, this study seeks to support the implementation of milling heritage knowledge and its application to the recovery of the Windmills of Andalusia (Spain). In this way, ensures that the visitor gets a more pleasant experience when interpreting the remains and the operation of these windmills' owm pre-industrial archaeology.
Survey of Occupational Therapy Practice in Medication Management
Authors: Schwartz Jaclyn , Smith Roger O.
Published: February 2016

Date Presented 4/16/2015

Millions of Americans are struggling to correctly take their medications as prescribed, with unfortunate consequences. In this study, we describe how occupational therapists (OTs) are addressing medication management in day-to-day practice. Common barriers and opportunities for clinicians and researchers are discussed.
A Preliminary Look at Knowledge, Attitudes, and Personal Use of Complementary/Alternative Medicine (CAM) Among Occupational Therapy Practitioners
Authors: Bradshaw Michelle , Worthley Hannah , Martin Kathryn , Conley Samantha , Jacobs Brittany , Mazzamaro Liza , Welch Emily
Published: February 2016

Date Presented 4/16/2015

This preliminary study aimed to describe the knowledge, attitudes, and personal use of complementary/alternative medicine (CAM) among occupational therapy practitioners in the United States. Further research is needed to investigate potential knowledge gaps and attitudes that could interfere with providing client-centered and holistic occupational therapy services.
Using Virtual Reality Upper-Extremity Training Combined With Task Practice to Improve Functional Performance
Authors: Lowe Amber , Dorich Jenny , Warnken Beth , Harpster Karen
Published: February 2016

Date Presented 4/16/2015

Children with hemiplegia participated in an intensive neurorehabilitation program combining virtual reality treatment with intensive task training 3 days per week for 5 to 6 wk. Participants’ ages ranged from 9 to 17 yr. Participants made significant improvements in self-selected, functional goals.
Using Clicker Technology: Comparing Student Perceptions of Learning and Participation
Authors: Mernar Thomas
Published: February 2016

Date Presented 4/16/2015

The findings from this study highlight how student preparation may be different for class if they are expected to use clickers during class. Students using clickers rated them as having agreeable importance to their learning in a clinic-based occupational therapy course.
The Effects of an Equine-Assisted Occupational Therapy Program on Adaptive Behaviors in Children and Youths
Authors: DiMarco Christina , Davies Lynn , Hargett Colleen , Kimberly Hession , Odle Alison , Takeno Emily , Jelenek Allison , Karros Jessica , Wilson Jacqueline , Lishia Dana , Scuderi Anna , Murphy Lynne
Published: February 2016

Date Presented 4/16/2015

Equine-assisted therapy utilizes unmounted activities with horses to remediate social participation and emotional regulation deficits. This pilot study measured outcomes of an equine-assisted occupational therapy program to support continued research and recognition of occupational therapists as providers.
Effectiveness of Mirror Therapy on Function for Chronic Stroke Patients
Authors: Wooster Donna , Woodward Amy , Brown Lauren , a Cunha Andrean , Maria Dallas , Frank Ellard , Meghan Marino , Maegan Ramires
Published: February 2016

Date Presented 4/16/2015

This study sought to determine whether 6 wk of 45-min weekly mirror therapy sessions improved upper-extremity (UE) motor function poststroke. Fugl-Meyer Assessment and Canadian Occupational Performance Measure (COPM) changes were not statistically significant, but positive changes on the Stroke Impact Scale contradicted COPM results. Mirror therapy may be an effective treatment for stroke rehabilitation, but further research is needed.
Occupational Therapists in Primary Care: Perceptions of Incorporating New Interventions Into Practice
Authors: Simpson Allen , Hanson Debra , Reid Roberta
Published: February 2016

Date Presented 4/16/2015

A focus group was conducted with experienced occupational therapists to investigate perceptions of the opportunities, obstacles, and supports needed to assume a role in primary care. Findings inform professional association and individual therapist efforts toward role emergence in primary care.
Comparing Occupation-Based and Intensive Task-Specific Interventions for Optimal Stroke Recovery
Authors: Skubik-Peplaski Camille L. , Howel Dana , Stroud Robin , Custer Melba G.
Published: February 2016

Date Presented 4/16/2015

This study investigates change in perceived motor performance and neuroplastic change by comparing occupation-based intervention and intensive task-specific training. Results will help to develop efficacious and effective interventions to improve the quality of life of individuals with chronic stroke.
A Video-Modeling Program to Increase Functional Home Skills of a Child With Autism Spectrum Disorder (ASD)
Authors: Heard Morgan , Hansen Megan , Boran Ethan , Everist Robyn , Coffelt Ketti
Published: February 2016

Date Presented 4/16/2015

This single subject multiple baseline research describes the impact of a video-modeling intervention for a child with autism spectrum disorder and his occupational performance of daily home tasks. The portability of technology devices presents practitioners with new applications using a family-centered approach.
Learning to Work Together: Strategies for Integrating Interprofessional Collaborative Practice Into MSOT Curriculum
Authors: Prast Jean , Frederick Andrea , Herlache-Pretzer Ellen , Lachter Liat Gafni
Published: February 2016

Date Presented 4/16/2015

Interprofessional collaborative practice is vital for the provision of high-quality patient care. In this presentation, information regarding the infusion of interprofessional education into one graduate-level occupational therapy program, as well as its impact on students, is provided.
Spinal Rotation Range of Motion (ROM) With Isometric Contractions and Back Injuries in Health Care Workers: A Correlational Study
Authors: Kihara Alyssa , Zipp Marie , Rice Martin S.
Published: February 2016

Date Presented 4/16/2015

Back injury in health care workers is common. Little evidence suggests a biomarker for this type of injury. In this study, we look for correlations between trunk performance and back injury in employees at a Midwestern teaching hospital using the Turning Point 4.0 Rotational Spine SystemTM.
Evaluating the Impact of the Home Environment on Family Caregivers
Authors: Stark Susan , Somerville Emily , Keglovits Marian
Published: February 2016

Date Presented 4/16/2015

The In-Home Occupational Performance Evaluation for Providing Assistance is a reliable and valid tool to measure caregiver support, self-efficacy, and barriers in the environment. Researchers and clinicians can use this tool to guide and assess home modification interventions to support caregivers.
Factors Supporting Social Participation and Friendships for Older Youths With Autism Spectrum Disorder and Their Peers
Authors: Young Alanna
Published: February 2016

Date Presented 4/16/2015

The perspective of older youth with and without autism spectrum disorder (ASD), gathered from focus group discussions, highlights supports and barriers to social participation. Their ideas suggest strategies for intervention to promote social participation and friendships for older youth with ASD.
Characterizing the Outcomes for Patients With Brain Injury in Acute Care Rehabilitation
Authors: Robins Nina , Hendricks Carla Tierney , Nicholas Marjorie , Wagner Lynne C.Brady , Sugiyama Eri
Published: February 2016

Date Presented 4/16/2015

This study investigated the factors affecting functional outcomes in patients with brain injury, including the relationship between etiology, demographic variables, and recovery trajectory. It is critical to account for these factors to improve treatment interventions and discharge planning.
Resilience Protective and Vulnerability Factors in Post-9/11 Veterans With Service-Related Trauma in Postsecondary Education
Authors: Eakman Aaron M.
Published: February 2016

Date Presented 4/16/2015

Among post-9/11 veterans with service-related trauma who were in college, lower social support, lower meaningful occupation, and lower academic self-efficacy—as well as higher posttraumatic stress, higher depression, and higher somatic pain—were found when they were compared with a matched sample. This highlights the need for occupational therapy services.
Living With a Personality Disorder: Its Impact on Life Balance
Authors: Denis Catherine , Larivière Nadine
Published: February 2016

Date Presented 4/17/2015

Little is known about the life balance of women with Clusters B and C personality disorders. This study compared subjective and objective life balance in women with and without personality disorders. It also examined relationships among subjective and objective life balance, stress, and quality of life.
Evaluation of a One-Week, Occupation-Based Program on the Health and Participation of Women With Cancer
Authors: Maher Colleen , Mendonca Rochelle
Published: February 2016

Date Presented 4/17/2015

This study investigated the effectiveness of a 1-wk, occupation-based program on functional performance of women diagnosed with cancer. Results demonstrate that participation in occupations improves the perception of performance and satisfaction for the participants.
Understanding Chronic Pain in Context: Intervention and Outcomes Using the Kawa Model With Youths and Their Families
Authors: Daghstani Suzie , Muñoz Jaime , Willis Brooke
Published: February 2016

Date Presented 4/17/2015

In this poster, we present outcomes of an approach combining the Kawa Model and the Canadian Occupational Performance Measure (COPM) to generate an evidenced-based, person- and family-centered narrative of family co-occupation. Barriers and supports to participation and prioritized pain management goals from varied family perspectives are described.
Family Mealtimes and Sensory Processing Patterns
Authors: Little Lauren , Jarrett Lindsey
Published: February 2016

Date Presented 4/17/2015

This aim of this study was to understand how children’s sensory preferences influence parent and child behaviors in families of children with autism spectrum disorder (ASD) during mealtime. Participation in mealtime is a vital occupation for young children’s development, particularly for young children with ASD.
The Effects of a Slow and Controlled Feeding Protocol for the Introduction of Oral Feeding for Infants
Authors: Bridwell Margaret , Grimshaw Janae
Published: February 2016

Date Presented 4/17/2015

Pacifier trainer as part of a therapeutic protocol to improve feeding outcomes in infants after cardiac surgery may be linked with decreased hospital length of stay and improved feeding outcomes. This approach mimics the natural progression that feeding infants have in the first few days of life.
Perception and Experience Level in Assessing a Pivot Transfer
Authors: Stringer Elizabeth , Rice Martin
Published: February 2016

Date Presented 4/17/2015

This study explored therapists’ experience and accuracy in rating assistance levels in pivot transfers. Results indicate that accuracy in rating transfers was poor regardless of experience and that the patient’s ground reaction forces (GRFs) were a better predictor than the therapist’s GRFs for rating patient effort during the transfer.
Goal Attainment Scaling in Fieldwork: Client Competencies and Student Achievement
Authors: Chapleau Ann
Published: February 2016

Date Presented 4/17/2015

A program evaluation using Goal Attainment Scaling (GAS) was conducted to assess student learning and level of client goal attainment. Analyses revealed significant improvements and support the use of GAS as a useful method for measuring both student learning and client outcomes.
Cracking the Code: Determining Whether a Single Measurement Model Underlies Different Activities of Daily Living (ADL) Scales
Authors: McArdle Caitlyn , Stewart Laura , Li Chih-Ying , Satterfield Jacob , Tomsic Patee , Simon Laura , Coats Erin , MacIntire Kelly , Velozo Craig
Published: February 2016

Date Presented 4/17/2015

This study explores the feasibility of developing an underlying measurement theory of activities of daily living (ADL) item hierarchy across ADL instruments used in rehabilitation. This is a preliminary study to provide applicable information and to further facilitate evidence-based professional development and practice.
Promoting Mealtimes of Individuals With Autism Spectrum Disorder Using Evidence-Based Practices: An Investigation
Authors: Cosbey Joanna , Muldoon Deirdre
Published: February 2016

Date Presented 4/17/2015

This study demonstrated the efficacy of a family-centered intervention package on improving the mealtime behaviors of children with autism spectrum disorder (ASD). It provides evidence-based guidance for practitioners working in the ASD field and strengthens the presence of the occupational therapy field in the area of ASD research.
How Do We Live With a Chronic Condition Without Expectations? A Family’s Story of Thriving With Dravet Syndrome
Authors: Breland Hazel , Hoffart Alicia , McDonald Amanda , Owens Lindsey , Zeigler Jayson
Published: February 2016

Date Presented 4/17/2015

This research aims to increase awareness of the lived experiences of parents and siblings of a family member with Dravet syndrome (DS) and the impact of DS on the family’s engagement of meaningful occupations for the development of family-centered and occupation-based occupational therapy interventions.
Convergent Validity: The Relationship Between Perceived Pain and the Manual Ability Measure–20 (MAM–20)
Authors: Thomas Julie Jepson , Fowler Danielle
Published: February 2016

Date Presented 4/18/2015

Hand pain is common, but how much does pain contribute to deficits in manual ability? In this study, we examined the relationship between perceived pain and the Manual Ability Measure—20 (MAM–20). The results suggest that occupational therapists (OTs) should assess pain and manual ability, as there does not appear to be substantial overlap between these concepts.
The Power of Two: Willard and Spackman’s Influence on Occupational Therapy
Authors: Peters Christine , Martin Peggy , Mahoney Wanda
Published: February 2016

Date Presented 4/18/2015

A historical study of Helen Willard (1894 to 1980) and Clare Spackman (1909 to 1992) included document review and interviews with family members and colleagues. Findings relate to current occupational therapy concerns of practitioners’ occupational balance, developing leadership, and globalization.
Scope of Occupational Therapy in the U.S. Criminal Justice System
Authors: Moreton Emily , Thomas Rachel , Sitterly Audra , Muñoz Jaime
Published: February 2016

Date Presented 4/18/2015

In this study, we describe the presence of occupational therapists (OTs) in the U.S. criminal justice system; define primary practice models, assessments, and intervention approaches used by OTs in corrections; and delineate pedagogical strategies used to train students and the range of topics that occupational therapy researchers are examining in correction settings.
The Feeling of Mindfulness: How Sensory Processing Styles Influence Mindful Awareness of Daily Experiences
Authors: Hebert Karen
Published: February 2016

Date Presented 4/18/2015

Occupational therapy concepts of sensory processing provide a unique addition to the body of work exploring the neuroscience basis of mindfulness. In this study, low registration and sensory sensitive processing styles were associated with reduced mindfulness in a healthy adult sample.
Current Practice and Perceptions of Group Work in Occupational Therapy
Authors: Higgins Susan , Schwartzberg Sharan L. , Bedell Gary , Duncombe Linda
Published: February 2016

Date Presented 4/18/2015

This presentation shows the results of national survey that was used to determine occupational therapy practitioners’ current practice trends and views of group treatment, identify supports and benefits of group treatment, identify future educational needs, and provide recommendations to increase group work in practice.
Occupational Therapy Life Skills Training for Juvenile Offenders in Foster Care
Authors: Kramper Julie , Hullman Andrea , Allmayer Naomi , Phillips Mary Kate , Walterbach Mary , DeTour Danielle , Mapes Morgan , Moller Colt , Schriner Mylene
Published: February 2016

Date Presented 4/18/2015

There is a lack of research examining the role of occupational therapists (OTs) in teaching independent living skills to at-risk youths. Results of this study were combined with the significant findings from a 2013 pilot study, in which the effectiveness of an occupational therapy life skills program for juvenile offenders in foster care was examined.
Can Noninvasive Neurostimulation and Working Memory Training Facilitate Transfer Gains in Healthy Older Adults?
Authors: Berryhill Marian , Stephens Jaclyn
Published: February 2016

Date Presented 4/16/2015

A combined intervention of transcranial direct current stimulation and a working memory (WM) training protocol significantly enhanced performance on both trained and transfer WM tasks in healthy older adults. The continuation of this research includes tasks with greater ecological validity.
Health Care Disparities and Autism: Analytic Approaches to Understanding Families’ Experiences in Their Everyday Lives
Authors: Angell Amber , Lawlor Mary , Solomon Olga
Published: February 2016

Date Presented 4/17/2015

In this research, we examine health care disparities linked to autism as situated around particular everyday problems encountered by families: negotiations of expertise, management of elopement and wandering, and acquisition of an autism diagnosis. Research, practice, and policy implications are discussed.
Independence at Home: Living Beyond Safety Concerns
Authors: Breland Hazel L.
Published: February 2016

Date Presented 4/17/2015

In this research paper, I describe real and perceived performance patterns among older African American women with rheumatic conditions who live with disease-specific disabilities that affect their participation in meaningful occupations and safety concerns within their homes.
Change in Parenting Self-Efficacy After Cognitive–Functional Treatment in Occupational Therapy for Children With Attention-Deficit/Hyperactivity Disorder (ADHD)
Authors: Taubin Dana Zeides , Maeir Adina , Hahn-Markowit Jeri
Published: February 2016

Date Presented 4/17/2015

Results of this randomized controlled trial (RCT) provide evidence for the effectiveness of cognitive–functional (cog-fun) treatment in occupational therapy in improving self-efficacy of parents of children with attention-deficit/hyperactivity disorder (ADHD).
Cerebral Performance Category—Extended (CPC–E): A Novel Tool to Measure Outcomes in Cardiac Arrest Survivors
Authors: Holm Margo , Balouris Sondra , Rittenberger Jon C. , Callaway Clifton , Rogers Joan , Raina Ketki
Published: February 2016

Date Presented 4/18/2015

The project purpose was to develop the Cerebral Performance Category—Extended (CPC–E) tool to accurately measure the extent and severity of impairment and disability after cardiac arrest (CA) and to establish its psychometric properties. The tool exhibits excellent test–retest reliability and clinical utility.
Fear of Falling Among Persons With Chronic Stroke
Authors: Jones Valerie , Schmid Arlene , Arnold Sarah , Ritter Jane , Sapp Stephanie , Miller Kristine K. , Van Puymbroeck Marieke
Published: February 2016

Date Presented 4/18/2015

Fear of falling (FoF) has not been studied in chronic stroke. In our sample, average time since stroke was more than 4 yr, and 66% of study participants identified a FoF. FoF was associated with worse balance, activity, participation, anxiety, and stroke severity. Occupational therapists (OTs) must address FoF after stroke.
Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: application to the southeast United States and co-benefit of SO2 emission controls
Authors: Marais E. A. , Jacob D. J. , Jimenez J. L. , Campuzano-Jost P. , Day D. A. , Hu W. , Krechmer J. , Zhu L. , Kim P. S. , Miller C. C. , Fisher J. A. , Travis K. , Yu K. , Hanisco T. F. , Wolfe G. M. , Arkinson H. L. , Pye H. O. T. , Froyd K. D. , Liao J. , McNeill V. F.
Published: February 2016

Abstract. Isoprene emitted by vegetation is an important precursor of secondary organic aerosol (SOA), but the mechanism and yields are uncertain. Aerosol is prevailingly aqueous under the humid conditions typical of isoprene-emitting regions. Here we develop an aqueous-phase mechanism for isoprene SOA formation coupled to a detailed gas-phase isoprene oxidation scheme. The mechanism is based on aerosol reactive uptake coefficients (γ) for water-soluble isoprene oxidation products, including sensitivity to aerosol acidity and nucleophile concentrations. We apply this mechanism to simulation of aircraft (SEAC4RS) and ground-based (SOAS) observations over the southeast US in summer 2013 using the GEOS-Chem chemical transport model. Emissions of nitrogen oxides (NOx  ≡  NO + NO2) over the southeast US are such that the peroxy radicals produced from isoprene oxidation (ISOPO2) react significantly with both NO (high-NOx pathway) and HO2 (low-NOx pathway), leading to different suites of isoprene SOA precursors. We find a mean SOA mass yield of 3.3 % from isoprene oxidation, consistent with the observed relationship of total fine organic aerosol (OA) and formaldehyde (a product of isoprene oxidation). Isoprene SOA production is mainly contributed by two immediate gas-phase precursors, isoprene epoxydiols (IEPOX, 58 % of isoprene SOA) from the low-NOx pathway and glyoxal (28 %) from both low- and high-NOx pathways. This speciation is consistent with observations of IEPOX SOA from SOAS and SEAC4RS. Observations show a strong relationship between IEPOX SOA and sulfate aerosol that we explain as due to the effect of sulfate on aerosol acidity and volume. Isoprene SOA concentrations increase as NOx emissions decrease (favoring the low-NOx pathway for isoprene oxidation), but decrease more strongly as SO2 emissions decrease (due to the effect of sulfate on aerosol acidity and volume). The US Environmental Protection Agency (EPA) projects 2013–2025 decreases in anthropogenic emissions of 34 % for NOx (leading to a 7 % increase in isoprene SOA) and 48 % for SO2 (35 % decrease in isoprene SOA). Reducing SO2 emissions decreases sulfate and isoprene SOA by a similar magnitude, representing a factor of 2 co-benefit for PM2.5 from SO2 emission controls.
Size-resolved measurements of ice-nucleating particles at six locations in North America and one in Europe
Authors: Mason R. H. , Si M. , Chou C. , Irish V. E. , Dickie R. , Elizondo P. , Wong R. , Brintnell M. , Elsasser M. , Lassar W. M. , Pierce K. M. , Leaitch W. R. , MacDonald A. M. , Platt A. , Toom-Sauntry D. , Sarda-Estève R. , Schiller C. L. , Suski K. J. , Hill T. C. J. , Abbatt J. P. D. , Huffman J. A. , DeMott P. J. , Bertram A. K.
Published: February 2016

Abstract. Detailed information on the size of ice-nucleating particles (INPs) may be useful in source identification, modeling their transport in the atmosphere to improve climate predictions, and determining how effectively or ineffectively instrumentation used for quantifying INPs in the atmosphere captures the full INP population. In this study we report immersion-mode INP number concentrations as a function of size at six ground sites in North America and one in Europe using the micro-orifice uniform-deposit impactor droplet freezing technique (MOUDI-DFT), which combines particle size-segregation by inertial impaction and a microscope-based immersion freezing apparatus. The lowest INP number concentrations were observed at Arctic and alpine locations and the highest at suburban and agricultural locations, consistent with previous studies of INP concentrations in similar environments. We found that 91 ± 9, 79 ± 17, and 63 ± 21 % of INPs had an aerodynamic diameter > 1 µm at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. In addition, 62 ± 20, 55 ± 18, and 42 ± 17 % of INPs were in the coarse mode (> 2.5 µm) at ice activation temperatures of −15, −20, and −25 °C, respectively, when averaging over all sampling locations. These results are consistent with six out of the nine studies in the literature that have focused on the size distribution of INPs in the atmosphere. Taken together, these findings strongly suggest that supermicron and coarse-mode aerosol particles are a significant component of the INP population in many different ground-level environments. Further size-resolved studies of INPs as a function of altitude are required since the size distribution of INPs may be different at high altitudes due to size-dependent removal processes of atmospheric particles.