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https://www.readbyqxmd.com/read/28426586/predictive-modeling-of-massive-transfusion-requirements-during-liver-transplantation-and-its-potential-to-reduce-utilization-of-blood-bank-resources
#1
Aliaksei Pustavoitau, Maggie Lesley, Promise Ariyo, Asad Latif, April J Villamayor, Steven M Frank, Nicole Rizkalla, William Merritt, Andrew Cameron, Nabil Dagher, Benjamin Philosophe, Ahmet Gurakar, Allan Gottschalk
BACKGROUND: Patients undergoing liver transplantation frequently but inconsistently require massive blood transfusion. The ability to predict massive transfusion (MT) could reduce the impact on blood bank resources through customization of the blood order schedule. Current predictive models of MT for blood product utilization during liver transplantation are not generally applicable to individual institutions owing to variability in patient population, intraoperative management, and definitions of MT...
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28426512/technology-in-s-c-assessing-bodyweight-squat-technique-with-wearable-sensors
#2
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However it is not always practical to operate under the direct supervision of an S&C coach and consequently individuals are often left training without expert oversight. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualised feedback regarding exercise performance...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426147/propagation-of-error-from-parameter-constraints-in-quantitative-mri-example-application-of-multiple-spin-echo-t2-mapping
#3
Christopher L Lankford, Mark D Does
PURPOSE: Quantitative MRI may require correcting for nuisance parameters which can or must be constrained to independently measured or assumed values. The noise and/or bias in these constraints propagate to fitted parameters. For example, the case of refocusing pulse flip angle constraint in multiple spin echo T2 mapping is explored. METHODS: An analytical expression for the mean-squared error of a parameter of interest was derived as a function of the accuracy and precision of an independent estimate of a nuisance parameter...
April 20, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28425740/-healthier-than-thou-practicing-what-you-preach-backfires-by-increasing-anticipated-devaluation-correction-to-howe-and-monin-2017
#4
(no author information available yet)
Reports an error in "Healthier Than Thou? "Practicing What You Preach" Backfires by Increasing Anticipated Devaluation" by Lauren C. Howe and Benoît Monin (Journal of Personality and Social Psychology, Advanced Online Publication, Feb 27, 2017, np). In the article, the beginning phrase of the second paragraph of the Internal Meta-Analysis of Studies 3 Through 5 section is incorrect. It should instead begin as follows: Across the three studies. The Monin et al. (2014) reference in both the References list and in text is included in error...
May 2017: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/28422660/weak-classifier-for-density-estimation-in-eye-localization-and-tracking
#5
Gabriel M Araujo, Felipe M L Ribeiro, Waldir S Junior, Eduardo A B da Silva, Siome K Goldenstein
In this work, we propose a fast weak classifier that can detect and track eyes in video sequences. The approach relies on a least-squares detector based on the Inner Product Detector (IPD) that can estimate a probability density distribution for a feature's location - which fits naturally with a Bayesian estimation cycle, such as a Kalman or particle filter. As a leastsquares sliding window detector, it possesses tolerance to small variations in the desired pattern while maintaining good generalization capabilities and computational efficiency...
April 13, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28421162/r-ideal-a-framework-for-systematic-clinical-evaluation-of-technical-innovations-in-radiation-oncology
#6
Helena M Verkooijen, Linda G W Kerkmeijer, Clifton D Fuller, Robbert Huddart, Corinne Faivre-Finn, Marcel Verheij, Stella Mook, Arjun Sahgal, Emma Hall, Chris Schultz
The pace of innovation in radiation oncology is high and the window of opportunity for evaluation narrow. Financial incentives, industry pressure, and patients' demand for high-tech treatments have led to widespread implementation of innovations before, or even without, robust evidence of improved outcomes has been generated. The standard phase I-IV framework for drug evaluation is not the most efficient and desirable framework for assessment of technological innovations. In order to provide a standard assessment methodology for clinical evaluation of innovations in radiotherapy, we adapted the surgical IDEAL framework to fit the radiation oncology setting...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28420973/no-overt-effects-of-a-6-week-exergame-training-on-sensorimotor-and-cognitive-function-in-older-adults-a-preliminary-investigation
#7
Madeleine Ordnung, Maike Hoff, Elisabeth Kaminski, Arno Villringer, Patrick Ragert
Several studies investigating the relationship between physical activity and cognition showed that exercise interventions might have beneficial effects on working memory, executive functions as well as motor fitness in old adults. Recently, movement based video games (exergames) have been introduced to have the capability to improve cognitive function in older adults. Healthy aging is associated with a loss of cognitive, as well as sensorimotor functions. During exergaming, participants are required to perform physical activities while being simultaneously surrounded by a cognitively challenging environment...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28420806/the-association-of-occupational-metals-exposure-and-oxidative-damage-telomere-shortening-in-fitness-equipments-manufacturing-workers
#8
Jiunn-Liang Ko, Yu-Jung Cheng, Guan-Cen Liu, I-Lun Hsin, Hsiu-Ling Chen
The welding is the major working process in fitness equipment manufacturing industry, and International Agency for Research on Cancer has classified welding fumes as possibly carcinogenic to humans (Group 2B). The present study aimed to evaluate associations between the occupational exposure of metals and oxidative damage and telomere length shortening in workers involved in the manufacture of fitness equipment. The blood metal concentrations were monitored and malondialdehyde (MDA), alkaline Comet assay was determined as oxidative damage in 117 workers from two representative fitness equipment manufacturing plants...
April 14, 2017: Industrial Health
https://www.readbyqxmd.com/read/28419977/investigation-of-as-v-removal-from-acid-mine-drainage-by-iron-hydr-oxide-modified-zeolite
#9
Pfano Mathews Nekhunguni, Nikita Tawanda Tavengwa, Hlanganani Tutu
In this work, the synthesis of iron (hydr) oxide modified zeolite was achieved through precipitation of iron on the zeolite. The structure and surface morphology of iron (hydr) oxide modified zeolite (IHOMZ) was studied by scanning electron microscopy (SEM), coupled with an energy-dispersive X-ray spectroscopy (EDX), and Fourier transform infrared (FT-IR) spectra. The efficiency of IHOMZ was then investigated through batch technique for the extraction of As(V) from mine waste water. The optimum parameters for maximum As(V) adsorption were: an initial As(V) concentration (10 mg L(-1)), adsorbent dosage (3...
April 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28419795/-is-it-possible-to-improve-the-preventive-usefulness-of-workers-health-surveillance-in-the-current-regulatory-framework
#10
Mari Cruz Rodríguez Jareño, Jaume De Montserrat I Nonó
OBJECTIVE: In Spain, the limited preventive usefulness of health surveillance is determined by the indiscriminate use of nonspecific "generic" health examinations aimed at producing a "fitness for work list", presumably allowing companies to comply with health and safety regulations. This study aimed to produce a technical interpretation of the Spanish Prevention of Risks at Work Act and propose a new conceptual framework to favour greater preventive usefulness of health surveillance within the current regulatory framework...
April 2017: Archivos de Prevención de Riesgos Laborales
https://www.readbyqxmd.com/read/28419481/are-induced-fit-protein-conformational-changes-caused-by-ligand-binding-predictable-a-molecular-dynamics-investigation
#11
Cen Gao, Jeremy Desaphy, Michal Vieth
In this work, the ability of molecular dynamics simulations (MD) to prospectively predict regions of ligand binding sites that could undergo induced fit effects was investigated. Conventional MD was run on 39 apo structures (no ligand), and the resulting trajectories were compared to a set of 147 holo X-ray structures (ligand-bound). It was observed from the simulations, in the absence of the ligands, that structures exhibiting large residue conformational changes indicated higher likelihood of induced fit effects...
April 16, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28419206/short-term-preoperative-exercise-therapy-does-not-improve-long-term-outcome-after-lung-cancer-surgery-a-randomized-controlled-study%C3%A2
#12
Wolfram Karenovics, Marc Licker, Christoph Ellenberger, Michel Christodoulou, John Diaper, Chetna Bhatia, John Robert, Pierre-Olivier Bridevaux, Frédéric Triponez
OBJECTIVES: Poor aerobic fitness is a potential modifiable risk factor for long-term survival and quality of life in patients with lung cancer. This randomized trial evaluates the impact of adding rehabilitation (Rehab) with high-intensity interval training (HIIT) before lung cancer surgery to enhance cardiorespiratory fitness and improve long-term postoperative outcome. METHODS: Patients with operable lung cancer were randomly assigned to usual care (UC, n  = 77) or to intervention group (Rehab, n  = 74) that entailed HIIT that was implemented only preoperatively...
April 17, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28418055/application-of-machine-statistical-learning-artificial-intelligence-and-statistical-experimental-design-for-the-modeling-and-optimization-of-methylene-blue-and-cd-ii-removal-from-a-binary-aqueous-solution-by-natural-walnut-carbon
#13
H Mazaheri, M Ghaedi, M H Ahmadi Azqhandi, A Asfaram
Analytical chemists apply statistical methods for both the validation and prediction of proposed models. Methods are required that are adequate for finding the typical features of a dataset, such as nonlinearities and interactions. Boosted regression trees (BRTs), as an ensemble technique, are fundamentally different to other conventional techniques, with the aim to fit a single parsimonious model. In this work, BRT, artificial neural network (ANN) and response surface methodology (RSM) models have been used for the optimization and/or modeling of the stirring time (min), pH, adsorbent mass (mg) and concentrations of MB and Cd(2+) ions (mg L(-1)) in order to develop respective predictive equations for simulation of the efficiency of MB and Cd(2+) adsorption based on the experimental data set...
April 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28416687/structural-and-functional-innovations-in-the-real-time-evolution-of-new-%C3%AE-%C3%AE-8-barrel-enzymes
#14
Matilda S Newton, Xiaohu Guo, Annika Söderholm, Joakim Näsvall, Patrik Lundström, Dan I Andersson, Maria Selmer, Wayne M Patrick
New genes can arise by duplication and divergence, but there is a fundamental gap in our understanding of the relationship between these genes, the evolving proteins they encode, and the fitness of the organism. Here we used crystallography, NMR dynamics, kinetics, and mass spectrometry to explain the molecular innovations that arose during a previous real-time evolution experiment. In that experiment, the (βα)8 barrel enzyme HisA was under selection for two functions (HisA and TrpF), resulting in duplication and divergence of the hisA gene to encode TrpF specialists, HisA specialists, and bifunctional generalists...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28416668/ambiguity-in-the-causes-for-decadal-trends-in-atmospheric-methane-and-hydroxyl
#15
Alexander J Turner, Christian Frankenberg, Paul O Wennberg, Daniel J Jacob
Methane is the second strongest anthropogenic greenhouse gas and its atmospheric burden has more than doubled since 1850. Methane concentrations stabilized in the early 2000s and began increasing again in 2007. Neither the stabilization nor the recent growth are well understood, as evidenced by multiple competing hypotheses in recent literature. Here we use a multispecies two-box model inversion to jointly constrain 36 y of methane sources and sinks, using ground-based measurements of methane, methyl chloroform, and the C(13)/C(12) ratio in atmospheric methane (δ(13)CH4) from 1983 through 2015...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28416279/the-impact-of-work-life-balance-on-intention-to-stay-in-academia-results-from-a-national-survey-of-pharmacy-faculty
#16
Tristan Lindfelt, Eric J Ip, Alejandra Gomez, Mitchell J Barnett
PURPOSE: Border-Crossing theory suggests work-life balance and career satisfaction are inter-related and disappointment in work-life balance may predict changes in one's career path. Application of this theory to health profession faculty is plausible but has not been fully explored. The purpose of this study is to examine factors related to reported career change intention among United States pharmacy school faculty and to determine if Border-Crossing theory fits these observations. METHODS: Results from a national web-based survey administered via Qualtrics(®) to American Association of Colleges of Pharmacy (AACP) members were utilized...
April 13, 2017: Research in Social & Administrative Pharmacy: RSAP
https://www.readbyqxmd.com/read/28415234/global-relativistic-effects-in-chaotic-scattering
#17
Juan D Bernal, Jesús M Seoane, Miguel A F Sanjuán
The phenomenon of chaotic scattering is very relevant in different fields of science and engineering. It has been mainly studied in the context of Newtonian mechanics, where the velocities of the particles are low in comparison with the speed of light. Here, we analyze global properties such as the escape time distribution and the decay law of the Hénon-Heiles system in the context of special relativity. Our results show that the average escape time decreases with increasing values of the relativistic factor β...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415104/p697new-indices-for-a-best-quantification-of-left-ventricular-function-in-heart-valve-diseases
#18
A Hubert, E Galli, G Bouzille, E Samset, E Donal
Aims. The Assessment of left ventricular (LV) function remains a clinical challenge especially in patients with preserved LV ejection fraction (EF) and valvular heart diseases (VHD). Mechanical dispersion is supposed to be a strong predictor of events and, to be related to the extent of fibrosis. Regional cardiac work is a new validated and very promising approach to quantify LV-function. We investigated the differences in mechanical dispersions and global LV work (totW) and wasted work fraction (WWF) in normal subjects and in patients with severe primary mitral regurgitation (MR) and severe aortic stenosis (AS)...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28414734/micrornas-as-reference-genes-for-quantitative-pcr-in-cotton
#19
Anna Karoline Silva Fausto, Tatiane da Franca Silva, Elisson Romanel, Maite F S Vaslin
Cotton (Gossypium hirsutum) is the most important non-food plant in the world. Studies concerning the fiber quality and plant fitness of cotton at molecular level depend on high sensitive and reproducible gene-expression assays. However, only a few reports have described genes suitable for normalizing gene expression data. In this study, we report for the first time that microRNAs (miRNAs) are reliable reference genes (RGs) for cotton gene expression normalization in quantitative real-time reverse transcription (RT)-PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28414480/fungible-parameter-estimates-in-structural-equation-modeling
#20
Taehun Lee, Robert C MacCallum, Michael W Browne
Extending work by Waller (2008) on fungible regression coefficients, we propose a method for computation of fungible parameter estimates in structural equation modeling. Such estimates are defined as distinct alternative solutions for parameter estimates, where all fungible solutions yield identical model fit that is only slightly worse than the fit provided by optimal estimates. When such alternative estimates are found to be highly discrepant from optimal estimates, then substantive interpretation based on optimal estimates is called into question...
April 17, 2017: Psychological Methods
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