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https://www.readbyqxmd.com/read/28445213/learner-patient-and-supervisor-features-are-associated-with-different-types-of-cognitive-load-during-procedural-skills-training-implications-for-teaching-and-instructional-design
#1
Justin L Sewell, Christy K Boscardin, John Q Young, Olle Ten Cate, Patricia S O'Sullivan
PURPOSE: Cognitive load theory, focusing on limits of the working memory, is relevant to medical education; however, factors associated with cognitive load during procedural skills training are not well characterized. The authors sought to determine how features of learners, patients/tasks, settings, and supervisors were associated with three types of cognitive load among learners performing a specific procedure, colonoscopy, to identify implications for procedural teaching. METHOD: Data were collected through an electronically administered survey sent to 1,061 U...
April 25, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28441246/x-ray-imaging-analysis-of-intrathecal-baclofen-pumps-for-pediatric-emergency-medicine
#2
Brianna Nicole Carr, Thomas Sernas, Catherine A Mazzola
Intrathecal baclofen therapy has become increasingly popular because of its effectiveness in treating spasticity in pediatric patients. The device implanted into each patient is structurally similar. However, x-ray imaging can give the appearance of missing or extraneous objects on or near the intrathecal baclofen device. The composition of the material used in making the catheters is transparent on x-ray images. In addition, the connection port between the pump and catheter resembles the shape of a needle...
April 24, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28394391/refinement-of-insulator-based-dielectrophoresis
#3
Claire V Crowther, Mark A Hayes
The ability to separate analytes with increasingly similar properties drives the field of separation science. One way to achieve such separations is using trapping and streaming dielectrophoresis (DEP), which directly exploits the subtle differences in the electrophysical properties of analytes. The non-uniform fields necessary for DEP can be formed using various insulator shapes in microchannels. Current insulator shapes include triangles, diamonds, circles, and rectangles. However, all of these insulators pose problems for trapping, streaming, and sorting (deflection) as the induced fields/gradients are not behaviorally consistent across the lateral dimension...
April 10, 2017: Analyst
https://www.readbyqxmd.com/read/28383539/analysis-of-the-factors-that-influence-the-finnegan-neonatal-abstinence-scoring-system
#4
E Gomez-Pomar, A Christian, L Devlin, K T Ibonia, V A Concina, H Bada, P M Westgate
OBJECTIVE: To evaluate factors that can influence the Finnegan Neonatal Abstinence Score (FNAS). STUDY DESIGN: Retrospective analysis of 367 patients admitted to two level IV neonatal intensive care units. Linear mixed effects models were developed to evaluate daily census, time of the day, and day of the week as fixed effect predictors. The degree of influence that nurses had on FNAS variability was also estimated. RESULTS: Bivariate analyses showed that daily census and the time of day have significant influence on the FNAS in institution 1, with minimal clinical significance...
April 6, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28381009/post-processing-phase-correction-algorithm-in-two-dimensional-electronic-spectroscopy
#5
Qiuxiang Meng, Yizhu Zhang, T-M Yan, Y H Jiang
In a typical two-dimensional electronic spectroscopy (2DES) experiment, the timing errors of the coherence and emission time when determining the absolute time zeros usually introduce extraneous spectral phase slopes and distort the 2D spectrum. In this work, a phase-correction method that merely relies on the data post-processing algorithm is proposed. The method allows reconstructing the spectrum by simply subtracting the artificial linear spectral-phase slopes from the phase component of the 2D spectrum along both coherence and emission frequency axes...
March 20, 2017: Optics Express
https://www.readbyqxmd.com/read/28380041/noise-and-accustomation-a-pilot-study-of-trained-assessors-olfactory-performance
#6
Johanna Trautmann, Lisa Meier-Dinkel, Jan Gertheiss, Daniel Mörlein
While recent studies suggest an influence of noise on olfactory performance, it is unclear as to what extent the influence varies between subjects who are accustomed to noise and those who are not. Two groups of panelists were selected: a University panel usually working under silent conditions and an abattoir panel usually working on the slaughter line with abattoir noise. Odor discrimination, odor identification, and odor detection thresholds were studied. Furthermore, a sensory quality control task using 40 boar samples was performed...
2017: PloS One
https://www.readbyqxmd.com/read/28370252/fetal-cardiac-cine-imaging-using-highly-accelerated-dynamic-mri-with-retrospective-motion-correction-and-outlier-rejection
#7
Joshua F P van Amerom, David F A Lloyd, Anthony N Price, Maria Kuklisova Murgasova, Paul Aljabar, Shaihan J Malik, Maelene Lohezic, Mary A Rutherford, Kuberan Pushparajah, Reza Razavi, Joseph V Hajnal
PURPOSE: Development of a MRI acquisition and reconstruction strategy to depict fetal cardiac anatomy in the presence of maternal and fetal motion. METHODS: The proposed strategy involves i) acquisition and reconstruction of highly accelerated dynamic MRI, followed by image-based ii) cardiac synchronization, iii) motion correction, iv) outlier rejection, and finally v) cardiac cine reconstruction. Postprocessing entirely was automated, aside from a user-defined region of interest delineating the fetal heart...
April 3, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28366211/porous-membrane-protected-micro-solid-phase-extraction-a-review-of-features-advancements-and-applications
#8
REVIEW
Muhammad Sajid
Membrane protected micro-solid-phase extraction (μ-SPE) was introduced in 2006 as an alternative to multistep SPE. μ-SPE is based on packing of very small amount of sorbent inside the porous membrane sheet whose edges are heat sealed to fabricate a μ-SPE device. This device performs clean up, extraction, and pre-concentration in a single step. It suits best for extraction of complex samples as sorbent is effectively protected inside the membrane and extraneous matter cannot adsorb over it. This review summarizes most important aspects of μ-SPE including basic principles, extraction procedure, different formats, sorbents employed and affecting parameters...
May 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28364364/possible-reversal-of-ptsd-related-dna-methylation-by-sympathetic-blockade
#9
REVIEW
Eugene G Lipov, Kenneth Candido, Elspeth C Ritchie
Studies have shown that brain-derived neurotrophic factor (BDNF) level increase is associated with post-traumatic stress disorder (PTSD) risk. BDNF may be a "missing-link" that mediates the interaction between genetics, environment, and the sympathetic system. Trauma has been shown to induce DNA methylation that in turn can increase BDNF concentration due to increased gene expression. Therapies that focus on the reduction of beta-NGF (BNGF) levels may impact PTSD symptoms. The focus of this paper is to discuss possible effect of stellate ganglion block (SGB) on epigenetic changes noted with PTSD mediated by BDNF and NGF...
March 31, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28360819/surface-initiated-ring-opening-metathesis-polymerization-si-romp-to-attach-a-tethered-organic-corona-onto-cdse-zns-core-shell-quantum-dots
#10
Fatma Vatansever, Michael R Hamblin
Core-shell CdSe/ZnS quantum dots (QDs) are useful as tunable photostable fluorophores for multiple applications in industry, biology, and medicine. However, to achieve the optimum optical properties, the surface of the QDs must be passivated to remove charged sites that might bind extraneous substances and allow aggregation. Here we describe a method of growing an organic polymer corona onto the QD surface using the bottom-up approach of surface-initiated ring-opening metathesis polymerization (SI-ROMP) with Grubbs catalyst...
October 2016: Journal of Nanoparticle Research: An Interdisciplinary Forum for Nanoscale Science and Technology
https://www.readbyqxmd.com/read/28357919/simple-silica-column-based-method-to-quantify-inorganic-polyphosphates-in-cartilage-and-other-tissues
#11
Whitaik David Lee, Rahul Gawri, Toshikazu Shiba, Ae-Ri Ji, William L Stanford, Rita A Kandel
OBJECTIVE: Inorganic polyphosphates (polyP) play a multitude of roles in mammalian biology. PolyP research is hindered by the lack of a simple and sensitive quantification method. The aim of this study was to develop a robust method for quantifying the low levels of polyP in mammalian tissue such as cartilage, which is rich in macromolecules that interfere with its determination. DESIGN: Native and in vitro formed tissues were digested with proteinase K to release sequestrated polyP...
March 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28349883/functionalization-of-super-aligned-carbon-nanotube-film-using-hydrogen-peroxide-solution-and-its-application-in-copper-electrodeposition
#12
Lunqiao Xiong, Jing Shuai, Zecheng Hou, Lin Zhu, Wenzhen Li
In order to make super-aligned carbon nanotubes (SACNT) homogeneously spread in electrolytes, a swift and effective method was devised for surface functionalization of SACNT film by ohmic heating using hydrogen peroxide solution. Controllable generation of defects and notable graft of oxygen functional groups on the sidewall of SACNTs were induced as proven by X-ray photoelectron spectroscopy and Raman spectroscopy. Differently from the harsh wet chemical oxidation, the super-aligned morphology and structural integrity of carbon nanotubes in the SACNT film were found to be well preserved by electron microscopy analysis...
March 21, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28328872/the-role-of-the-iacuc-in-ensuring-research-reproducibility
#13
REVIEW
Jerald Silverman, James Macy, Patricia A Preisig
There is a "village" of people impacting research reproducibility, such as funding panels, the IACUC and its support staff, institutional leaders, investigators, veterinarians, animal facilities, and professional journals. IACUCs can contribute to research reproducibility by ensuring that reviews of animal use requests, program self-assessments and post-approval monitoring programs are sufficiently thorough, the animal model is appropriate for testing the hypothesis, animal care and use is conducted in a manner that is compliant with external and institutional requirements, and extraneous variables are minimized...
March 22, 2017: Lab Animal
https://www.readbyqxmd.com/read/28323765/misuse-of-opioids-in-orthopaedic-postoperative-patients
#14
Anup Gangavalli, Ajith Malige, George Terres, Saqib Rehman, Chinenye Nwachuku
OBJECTIVE: In light of the recent uptrend in the prescription of opioids, this study seeks to identify patterns of opioid misuse among orthopaedic postoperative patients and principal external sources in obtaining these medications. DESIGN: Ten-month survey-based study. SETTING: Two Level I trauma centers (urban and suburban). PATIENTS/PARTICIPANTS: Two hundred seven patients between the ages of 18 and 89 years who underwent surgical fixation of fractures involving the pelvis, long bones, or periarticular regions of the knee, ankle, elbow, and wrist...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28303510/enhanced-resistance-against-vibrio-harveyi-infection-by-carvacrol-and-its-association-with-the-induction-of-heat-shock-protein-72-in-gnotobiotic-artemia-franciscana
#15
Kartik Baruah, Parisa Norouzitallab, Ho Phuong Pham Duy Phong, Guy Smagghe, Peter Bossier
Induction of HSP72 is a natural response of stressed organisms that protects against many insults including bacterial diseases in farm (aquatic) animals. It would therefore be of great health benefit to search for natural compounds that are clinically safe yet able to induce HSP72 in animals. The phenolic compound carvacrol, an approved food component, had been shown in in vitro study to act as a co-inducer of HSP72, enhancing HSP72 production only in combination with a bona fide stress compared to the compound alone...
March 16, 2017: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/28302641/gradual-escalation-of-use-of-force-reduces-police-officer-injury
#16
Katelyn K Jetelina, Jennifer M Reingle Gonzalez, Stephen A Bishopp
OBJECTIVE: To examine how escalation through the force continuum predicts officer injury in the presence of citizen aggression, while controlling for extraneous factors, like citizen and officer characteristics. METHODS: Cross-sectional data were extracted from 2244 use-of-force reports from the Dallas Police Department in 2015. Multilevel, mixed logistic regression models were used to evaluate the relationship between use of force and officer injury. Multilevel path analysis tested indirect and direct relationships between citizen aggression and officer injury...
March 16, 2017: Injury Prevention: Journal of the International Society for Child and Adolescent Injury Prevention
https://www.readbyqxmd.com/read/28299782/a-test-of-a-skeletal-ageing-method-based-on-resorption-of-the-alveolar-crest-following-tooth-loss-using-a-skeletal-population-of-documented-age-at-death
#17
Simon Mays
OBJECTIVES: Resorption of the alveolar process occurs following tooth loss, and appears to continue for a prolonged period. Previous study (Mays, ) with a known-age collection of human remains suggested the potential of this phenomenon for age estimation in remains of adults who have lost one or more molar teeth. This article tests this ageing technique on another known age group, and attempts to evaluate the impact of some extraneous factors on the method. MATERIALS AND METHODS: The study group comprises adult skeletons (N = 110) of documented age at death from 18th to 19th century London...
March 16, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28298919/overestimation-of-crop-root-biomass-in-field-experiments-due-to-extraneous-organic-matter
#18
Juliane Hirte, Jens Leifeld, Samuel Abiven, Hans-Rudolf Oberholzer, Andreas Hammelehle, Jochen Mayer
Root biomass is one of the most relevant root parameters for studies of plant response to environmental change, soil carbon modeling or estimations of soil carbon sequestration. A major source of error in root biomass quantification of agricultural crops in the field is the presence of extraneous organic matter in soil: dead roots from previous crops, weed roots, incorporated above ground plant residues and organic soil amendments, or remnants of soil fauna. Using the isotopic difference between recent maize root biomass and predominantly C3-derived extraneous organic matter, we determined the proportions of maize root biomass carbon of total carbon in root samples from the Swiss long-term field trial "DOK...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28298208/looking-back-to-move-forward-a-twenty-year-audit-of-herpes-zoster-in-asia-pacific
#19
REVIEW
Liang-Kung Chen, Hidenori Arai, Liang-Yu Chen, Ming-Yueh Chou, Samsuridjal Djauzi, Birong Dong, Taro Kojima, Ki Tae Kwon, Hoe Nam Leong, Edward M F Leung, Chih-Kuang Liang, Xiaohong Liu, Dilip Mathai, Jiun Yit Pan, Li-Ning Peng, Eduardo Rommel S Poblete, Philip J H Poi, Stewart Reid, Terapong Tantawichien, Chang Won Won
BACKGROUND: Herpes zoster (HZ) is a prevalent viral disease that inflicts substantial morbidity and associated healthcare and socioeconomic burdens. Current treatments are not fully effective, especially among the most vulnerable patients. Although widely recommended, vaccination against HZ is not routine; barriers in Asia-Pacific include long-standing neglect of adult immunisation and sparse local data. To address knowledge gaps, raise awareness, and disseminate best practice, we reviewed recent data and guidelines on HZ from the Asia-Pacific region...
March 15, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28274438/detection-of-unexpected-frauds-screening-and-quantification-of-maleic-acid-in-cassava-starch-by-fourier-transform-near-infrared-spectroscopy
#20
Hai-Yan Fu, He-Dong Li, Lu Xu, Qiao-Bo Yin, Tian-Ming Yang, Chuang Ni, Chen-Bo Cai, Ji Yang, Yuan-Bin She
Fourier transform near-infrared (FT-NIR) spectroscopy and chemometrics were adopted for the rapid analysis of a toxic additive, maleic acid (MA), which has emerged as a new extraneous adulterant in cassava starch (CS). After developing an untargeted screening method for MA detection in CS using one-class partial least squares (OCPLS), multivariate calibration models were subsequently developed using least squares support vector machine (LS-SVM) to quantitatively analyze MA. As a result, the OCPLS model using the second-order derivative (D2) spectra detected 0...
July 15, 2017: Food Chemistry
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