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Behnoosh Parsa, Vladimir M Zatsiorsky, Mark L Latash
We address the nature of unintentional changes in performance in two papers. This second paper tested hypotheses related to stability of task-specific performance variables estimated using the framework of the uncontrolled manifold (UCM) hypothesis. Our first hypothesis was that selective stability of performance variables would be observed even when the magnitudes of those variables drifted unintentionally because of the lack of visual feedback. Our second hypothesis was that stability of a variable would depend on the number of explicit task constraints...
October 24, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
Stephen F Cauley, Kawin Setsompop, Berkin Bilgic, Himanshu Bhat, Borjan Gagoski, Lawrence L Wald
PURPOSE: Fast MRI acquisitions often rely on efficient traversal of k-space and hardware limitations, or other physical effects can cause the k-space trajectory to deviate from a theoretical path in a manner dependent on the image prescription and protocol parameters. Additional measurements or generalized calibrations are typically needed to characterize the discrepancies. We propose an autocalibrated technique to determine these discrepancies. METHODS: A joint optimization is used to estimate the trajectory simultaneously with the parallel imaging reconstruction, without the need for additional measurements...
October 21, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Aideen Maguire, John Moriarty, Dermot O'Reilly, Mark McCann
PURPOSE: Educational attainment has been shown to be positively associated with mental health and a potential buffer to stressful events. One stressful life event likely to affect everyone in their lifetime is bereavement. This paper assesses the effect of educational attainment on mental health post-bereavement. METHODS: By utilising large administrative datasets, linking Census returns to death records and prescribed medication data, we analysed the bereavement exposure of 208,332 individuals aged 25-74 years...
October 21, 2016: Quality of Life Research
Antonio Miguel Cruz, Mayra R Guarín
To date, there are no broadly accepted or accurate models to determine appropriate staffing [levels] for clinical engineering departments (CEDs). The purpose of this study is to determine what the determinants of the staffing levels are (total number of full time equivalents (FTEs)) in CEDs in healthcare organisations. In doing so, we used a cross-sectional exploratory approach by using a multivariate regression model over a secondary source of data information from the AAMI Benchmarking Solutions-Healthcare Technology Management database...
October 21, 2016: Journal of Medical Engineering & Technology
Azadeh Kheirolomoom, Elizabeth S Ingham, Joel Commisso, Neveen Abushaban, Katherine W Ferrara
We previously developed a pH-responsive copper-doxorubicin (CuDox) cargo in lysolipid-based temperature-sensitive liposomes (LTSLs). The CuDox complex is released from the particle by elevated temperature; however, full release of doxorubicin from CuDox requires a reduced pH, such as that expected in lysosomes. The primary goal of this study is to evaluate the cellular uptake and intracellular trafficking of the drug-metal complex in comparison with intact liposomes and free drug. We found that the CuDox complex was efficiently internalized by mammary carcinoma cells after release from LTSLs...
October 13, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
David J Keene, Dipesh Mistry, Julian Nam, Elizabeth Tutton, Robert Handley, Lesley Morgan, Emma Roberts, Bridget Gray, Andrew Briggs, Ranjit Lall, Tim Js Chesser, Ian Pallister, Sarah E Lamb, Keith Willett
BACKGROUND: Close contact casting (CCC) may offer an alternative to open reduction and internal fixation (ORIF) surgery for unstable ankle fractures in older adults. OBJECTIVES: We aimed to (1) determine if CCC for unstable ankle fractures in adults aged over 60 years resulted in equivalent clinical outcome compared with ORIF, (2) estimate cost-effectiveness to the NHS and society and (3) explore participant experiences. DESIGN: A pragmatic, multicentre, equivalence randomised controlled trial incorporating health economic evaluation and qualitative study...
October 2016: Health Technology Assessment: HTA
Asif Jamil, Giorgi Batsikadze, Hsiao-I Kuo, Ludovica Labruna, Alkomiet Hasan, Walter Paulus, Michael A Nitsche
Contemporary non-invasive neuromodulatory techniques, such as transcranial direct current stimulation (tDCS), have shown promising potential in both restituting impairments in cortical physiology in clinical settings, as well as modulating cognitive abilities in the healthy population. However, neuroplastic after-effects of tDCS are highly dependent on stimulation parameters, relatively short lasting, and not expectedly uniform between individuals. The present study systematically investigates the full range of current intensity between 0...
October 10, 2016: Journal of Physiology
Sabrina Buoro, Tommaso Mecca, Michela Seghezzi, Barbara Manenti, Giovanna Azzarà, Cosimo Ottomano, Giuseppe Lippi
BACKGROUND: This article was aimed to test the use of validation rules for blood smear review after automated hematological testing using Mindray CAL-8000 (two hematological analyzers and one autoslider). METHODS: This study was based on 1013 peripheral blood samples (PB) referred for routine hematological testing. Results of testing on CAL-8000 were analyzed using both locally derived and International Consensus Group for Hematology (ICGH) validation rules, and then compared with data obtained by optical microscopy (OM)...
October 6, 2016: Journal of Clinical Laboratory Analysis
Davorina Petek, Mitja Mlakar
BACKGROUND: A new organisation at the primary level, called model practices, introduces a 0.5 full-time equivalent nurse practitioner as a regular member of the team. Nurse practitioners are in charge of registers of chronic patients, and implement an active approach into medical care. Selected quality indicators define the quality of management. The majority of studies confirm the effectiveness of the extended team in the quality of care, which is similar or improved when compared to care performed by the physician alone...
September 1, 2016: Zdravstveno Varstvo
Xu Zhen, Wei Cheng Ng, Fendy, Yen Wah Tong, Yanjun Dai, Koon Gee Neoh, Chi-Hwa Wang
In Singapore, approximately 30t/day of carbon-based solid waste are produced from petrochemical processes. This carbon black waste has been shown to possess physical properties that are characteristic of a good adsorbent such as high external surface area. Therefore, there is a growing interest to reutilize and process this carbon black waste into secondary materials such as adsorbents. However, the carbon black waste obtained from petrochemical industries may contain heavy metals that are hazardous to human health and the environment, hence restricting its full potential for re-utilization...
September 20, 2016: Journal of Hazardous Materials
Dermot O'Rourke, Saulo Martelli, Murk Bottema, Mark Taylor
Understanding the sensitivity of FE models to assumptions and uncertainties in geometric parameters and material properties is a fundamental step in understanding the reliability of model predictions. The computational cost of individual simulations and the large number of required models limits comprehensive quantification of model sensitivity. To quickly assess the sensitivity of a FE model, we built linear and Kriging surrogate models of a FE model of the intact hemipelvis. The percentage of the total sum of squares (%TSS) was used to determine the most influential input parameters and their possible interactions on the median, 95th percentile and maximum equivalent strains...
September 29, 2016: Journal of Biomechanical Engineering
Adam Lundqvist, Ida Ahlberg, Frida Hjalte, Mats Ekelund
INTRODUCTION: Anal fistula is an abnormal tract with an external and internal opening that cause leakage, discomfort, and occasionally pain. Surgery is standard treatment, but recurrence and anal incontinence is common. The objective of the study was to analyze resource use, costs and sick leave for newly diagnosed patients with anal fistula in Sweden. METHODS: The study was based on register data from linkages between Swedish population-based registers including patients treated for anal fistula in Västra Götaland County, Sweden...
September 24, 2016: International Journal of Surgery
Wen Ting Song, Zhi Jun Wang
Estrogenic activities of river water from four representative cross-sections of the Yellow River (Zhengzhou section) and their effects on reproduction and development of fish were assessed. MVLN assay showed estradiol equivalents of river water from Yiluohe, Xinmanghe, Qinhe and Huayuankou cross-sections were 1.09 ± 0.11, 0.72 ± 0.01, 1.19 ± 0.19 and 0.80 ± 0.04 ng/L, respectively. Significant vitellogenin (VTG) inductions were observed in adult male Japanese madaka (Oryzias latipes) after 30 days of exposure to river water from Yiluohe and Qinhe cross-sections (p < 0...
September 26, 2016: Bulletin of Environmental Contamination and Toxicology
Thomas Juffmann, Brannon B Klopfer, Timmo L I Frankort, Philipp Haslinger, Mark A Kasevich
Microscopy of biological specimens often requires low light levels to avoid damage. This yields images impaired by shot noise. An improved measurement accuracy at the Heisenberg limit can be achieved exploiting quantum correlations. If sample damage is the limiting resource, an equivalent limit can be reached by passing photons through a specimen multiple times sequentially. Here we use self-imaging cavities and employ a temporal post-selection scheme to present full-field multi-pass polarization and transmission micrographs with variance reductions of 4...
September 27, 2016: Nature Communications
Nancy A Dreyer, Allison Bryant, Priscilla Velentgas
BACKGROUND: Recognizing the growing need for robust evidence about treatment effectiveness in real-world populations, the Good Research for Comparative Effectiveness (GRACE) guidelines have been developed for noninterventional studies of comparative effectiveness to determine which studies are sufficiently rigorous to be reliable enough for use in health technology assessments. OBJECTIVE: To evaluate which aspects of the GRACE Checklist contribute most strongly to recognition of quality...
October 2016: Journal of Managed Care & Specialty Pharmacy
Steven J Wurzelbacher, Ibraheem S Al-Tarawneh, Alysha R Meyers, P Timothy Bushnell, Michael P Lampl, David C Robins, Chih-Yu Tseng, Chia Wei, Stephen J Bertke, Jill A Raudabaugh, Thomas M Haviland, Teresa M Schnorr
BACKGROUND: Workers' compensation (WC) claims data may be useful for identifying high-risk industries and developing prevention strategies. METHODS: WC claims data from private-industry employers insured by the Ohio state-based workers' compensation carrier from 2001 to 2011 were linked with the state's unemployment insurance (UI) data on the employer's industry and number of employees. National Labor Productivity and Costs survey data were used to adjust UI data and estimate full-time equivalents (FTE)...
September 26, 2016: American Journal of Industrial Medicine
Cong Sun, Rebecca J Foskey, Katrina J Allen, Shyamali C Dharmage, Jennifer J Koplin, Anne-Louise Ponsonby, Adrian J Lowe, Melanie C Matheson, Mimi L K Tang, Lyle Gurrin, Melissa Wake, Matthew Sabin
OBJECTIVES: To evaluate the associations between breastfeeding duration, age at solids introduction, and their interaction in relation to infant (age 9-15 months) above normal body mass index (BMI). STUDY DESIGN: Cross-sectional, population-based study with 3153 infants from Melbourne (2007-2011). Above normal BMI (z score > 2, equivalent to >97.7th percentile) defined using the World Health Organization standard. RESULTS: Both longer duration of full and any (full or partial) breastfeeding were associated with lower odds of above normal BMI (eg, aOR, 0...
September 20, 2016: Journal of Pediatrics
Mary G Harper, Julia Aucoin, Joan I Warren
A common question nursing professional development (NPD) practitioners ask is, "How many NPD practitioners should my organization have?" This study examined correlations among facility size and structure, NPD practitioner characteristics and time in service, and organizational outcomes. Organizations with a higher rate of NPD full-time equivalents per bed had higher patient satisfaction with nurses' communication and provision of discharge instruction on their HCAHPS (Hospital Consumer Assessment of Healthcare Provider and Systems) scores...
September 2016: Journal for Nurses in Professional Development
Ramon Casanovas, Elena Prieto, Marçal Salvadó
The measurement of the ambient dose equivalent H*(10) with automatic real-time radioactivity monitors using gamma-ray spectrometry provides valuable information at short integration times and serves as an alternative to conventional peak analysis of spectra. In this paper, a full methodology for the calculation of this quantity using Monte Carlo (MC) simulations is described and applied to real spectrometric measurements with LaBr3(Ce) scintillation detectors. The methodology involves the calculation of the fluence-to-H*(10) conversion factors and a method for obtaining the fluence from gamma-ray spectra...
September 9, 2016: Applied Radiation and Isotopes
Timothy P Holsgrove, Nicolas V Jaumard, Nina Zhu, Nicholas S Stiansen, William C Welch, Beth A Winkelstein
Dynamic cervical spine loading can produce facet capsule injury. Despite a large proportion of neck pain being attributable to the C2/C3 facet capsule, potential mechanisms are not understood. This study replicated low-speed frontal and rear-end traffic collisions in Occiput-C3 human cadaveric cervical spine specimens, and used kinematic and full-field strain analyses to assess injury. Specimens were loaded quasistatically in flexion and extension before and after dynamic rotation of C3 at 100°/sec. Global kinematics in the sagittal plane were tracked at 1kHz and C2/C3 facet capsule full-field strains were measured...
September 16, 2016: Journal of Biomechanical Engineering
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