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https://www.readbyqxmd.com/read/28222391/a-clinically-applicable-non-invasive-method-to-quantitatively-assess-the-visco-hyperelastic-properties-of-human-heel-pad-implications-for-assessing-the-risk-of-mechanical-trauma
#1
Sara Behforootan, Panagiotis E Chatzistergos, Nachiappan Chockalingam, Roozbeh Naemi
INTRODUCTION: Pathological conditions such as diabetic foot and plantar heel pain are associated with changes in the mechanical properties of plantar soft tissue. However, the causes and implications of these changes are not yet fully understood. This is mainly because accurate assessment of the mechanical properties of plantar soft tissue in the clinic remains extremely challenging. PURPOSE: To develop a clinically viable non-invasive method of assessing the mechanical properties of the heel pad...
February 9, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28222144/use-of-heterologous-immunoassays-for-quantification-of-serum-proteins-the-case-of-canine-c-reactive-protein
#2
Alberto Muñoz-Prieto, Asta Tvarijonaviciute, Damián Escribano, Silvia Martínez-Subiela, José J Cerón
The use of heterologous immunoassays containing antibodies raised against a different biological species for quantification of serum proteins is studied and discussed, taking as example the case of the use of a commercially available heterologous assay containing antibodies against human C-reactive protein (hCRP) for quantification of CRP in serum of dogs. This assay was adapted and validated for measurements of canine CRP (cCRP) and compared with three different homologous assays containing species-specific canine antibodies, which are currently commercially available for cCRP determination...
2017: PloS One
https://www.readbyqxmd.com/read/28222013/serum-triglyceride-measurements-the-commutability-of-reference-materials-and-the-accuracy-of-results
#3
Qinghui Meng, Weiyan Zhou, Chuanbao Zhang, Jie Zeng, Haijian Zhao, Tianjiao Zhang, Donghuan Wang, Jiangtao Zhang, Ying Yan, Wenxiang Chen
Background We aimed to evaluate the commutability of external quality assessment (EQA) materials, aqueous solutions, and commercial reference materials (calibrators and controls), and the accuracy of routine systems for serum triglyceride measurements. Methods According to the clinical and laboratory standards institute (CLSI) EP14-A3 protocol, we analyzed 43 fresh patient specimens and 32 processed materials including lyophilized samples, human serum pools, liquid reagents, swine sera and aqueous solutions by 14 routine methods (evaluated methods) and an isotope dilution liquid chromatography tandem mass spectrometry method (ID-LC/MS/MS) (comparative method)...
February 21, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28221087/fechner-s-law-in-metacognition-a-quantitative-model-of-visual-working-memory-confidence
#4
Ronald van den Berg, Aspen H Yoo, Wei Ji Ma
Although visual working memory (VWM) has been studied extensively, it is unknown how people form confidence judgments about their memories. Peirce (1878) speculated that Fechner's law-which states that sensation is proportional to the logarithm of stimulus intensity-might apply to confidence reports. Based on this idea, we hypothesize that humans map the precision of their VWM contents to a confidence rating through Fechner's law. We incorporate this hypothesis into the best available model of VWM encoding and fit it to data from a delayed-estimation experiment...
March 2017: Psychological Review
https://www.readbyqxmd.com/read/28221057/-understanding-the-neural-basis-of-cognitive-bias-modification-as-a-clinical-treatment-for-depression-correction-to-eguchi-et-al-2016
#5
(no author information available yet)
: Reports an error in "Understanding the neural basis of cognitive bias modification as a clinical treatment for depression" by Akihiro Eguchi, Daniel Walters, Nele Peerenboom, Hannah Dury, Elaine Fox and Simon Stringer (Journal of Consulting and Clinical Psychology, Advanced Online Publication, Dec 19, 2016, np). In the article, there was an error in the Discussion section's first paragraph for Implications and Future Work. The in-text reference citation for Penton-Voak et al. (2013) was incorrectly listed as "Blumenfeld, Preminger, Sagi, and Tsodyks (2006)"...
March 2017: Journal of Consulting and Clinical Psychology
https://www.readbyqxmd.com/read/28219432/personalized-heterogeneous-deformable-model-for-fast-volumetric-registration
#6
Weixin Si, Xiangyun Liao, Qiong Wang, Pheng Ann Heng
BACKGROUND: Biomechanical deformable volumetric registration can help improve safety of surgical interventions by ensuring the operations are extremely precise. However, this technique has been limited by the accuracy and the computational efficiency of patient-specific modeling. METHODS: This study presents a tissue-tissue coupling strategy based on penalty method to model the heterogeneous behavior of deformable body, and estimate the personalized tissue-tissue coupling parameters in a data-driven way...
February 20, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28218673/a-high-performance-piezoelectric-sensor-for-dynamic-force-monitoring-of-landslide
#7
Ming Li, Wei Cheng, Jiangpan Chen, Ruili Xie, Xiongfei Li
Due to the increasing influence of human engineering activities, it is important to monitor the transient disturbance during the evolution process of landslide. For this purpose, a high-performance piezoelectric sensor is presented in this paper. To adapt the high static and dynamic stress environment in slope engineering, two key techniques, namely, the self-structure pressure distribution method (SSPDM) and the capacitive circuit voltage distribution method (CCVDM) are employed in the design of the sensor...
February 17, 2017: Sensors
https://www.readbyqxmd.com/read/28214730/risk-aversion-and-religious-behaviour-analysis-using-a-sample-of-danish-twins
#8
Jytte Seested Nielsen, Mickael Bech, Kaare Christensen, Astrid Kiil, Niels Christian Hvidt
Economics offers an analytical framework to consider human behaviour including religious behaviour. Within the realm of Expected Utility Theory, religious belief and activity could be interpreted as an insurance both for current life events and for afterlife rewards. Based on that framework, we would expect that risk averse individuals would demand a more generous protection plan which they may do by devoting more effort and resources into religious activities such as church attendance and prayer, which seems to be in accordance with previous empirical results...
February 12, 2017: Economics and Human Biology
https://www.readbyqxmd.com/read/28214519/detection-and-quantification-of-soil-transmitted-helminths-in-environmental-samples-a-review-of-current-state-of-the-art-and-future-perspectives
#9
REVIEW
Isaac Dennis Amoah, Gulshan Singh, Thor Axel Stenström, Poovendhree Reddy
It is estimated that over a billion people are infected with soil-transmitted helminths (STHs) globally with majority occurring in tropical and subtropical regions of the world. The roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), and hookworms (Anclostoma duodenale and Necator americanus) are the main species infecting people. These infections are mostly gained through exposure to faecally contaminated water, soil or contaminated food and with an increase in the risk of infections due to wastewater and sludge reuse in agriculture...
February 15, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28213185/a-comparative-study-of-photogrammetric-methods-using-panoramic-photography-in-a-forensic-context
#10
Kayleigh Sheppard, John P Cassella, Sarah Fieldhouse
Taking measurements of a scene is an integral aspect of the crime scene documentation process, and accepted limits of accuracy for taking measurements at a crime scene vary throughout the world. In the UK, there is no published accepted limit of accuracy, whereas the United States has an accepted limit of accuracy of 0.25 inch. As part of the International organisation for Standardisation 17020 accreditation competency testing is required for all work conducted at the crime scene. As part of this, all measuring devices need to be calibrated within known tolerances in order to meet the required standard, and measurements will be required to have a clearly defined limit of accuracy...
February 4, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28213145/how-are-you-feeling-a-personalized-methodology-for-predicting-mental-states-from-temporally-observable-physical-and-behavioral-information
#11
Suppawong Tuarob, Conrad S Tucker, Soundar Kumara, C Lee Giles, Aaron L Pincus, David E Conroy, Nilam Ram
It is believed that anomalous mental states such as stress and anxiety not only cause suffering for the individuals, but also lead to tragedies in some extreme cases. The ability to predict the mental state of an individual at both current and future time periods could prove critical to healthcare practitioners. Currently, the practical way to predict an individual's mental state is through mental examinations that involve psychological experts performing the evaluations. However, such methods can be time and resource consuming, mitigating their broad applicability to a wide population...
February 14, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28212417/splitax-a-novel-method-to-assess-the-function-of-engineered-nucleases
#12
Richard A Axton, Sharmin S Haideri, Martha Lopez-Yrigoyen, Helen A Taylor, Lesley M Forrester
Engineered nucleases have been used to generate knockout or reporter cell lines and a range of animal models for human disease. These new technologies also hold great promise for therapeutic genome editing. Current methods to evaluate the activity of these nucleases are time consuming, require extensive optimization and are hampered by readouts with low signals and high background. We have developed a simple and easy to perform method (SplitAx) that largely addresses these issues and provides a readout of nuclease activity...
2017: PloS One
https://www.readbyqxmd.com/read/28212113/age-and-gender-dependency-of-physiological-networks-in-sleep
#13
Dagmar Krefting, Christoph Jansen, Thomas Penzel, Fang Han, Jan Kantelhardt
Recently, time delay stability analysis of biosignals has been successfully applied as a multivariate time series analysis method to assess the human physiological network in young adults. The degree of connectivity between different network nodes is described by the so-called link strength. Based on polysomnographic recordings (PSGs), it could be shown that the network changes with the sleep stage. Here, we apply the method to a large set of healthy controls spanning six decades of age. As it is well known, that the overall sleep architecture is dependent both on age and on gender, we particularly address the question, if these changes are also found in the network dynamics...
February 17, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28212080/improving-registration-robustness-for-image-guided-liver-surgery-in-a-novel-human-to-phantom-data-framework
#14
Jarrod Collins, Jared Weis, Jon Heiselman, Logan Clements, Amber Simpson, Willam Jarnagin, Michael Miga
In open image-guided liver surgery (IGLS), a sparse representation of the intraoperative organ surface can be acquired to drive image-to-physical registration. We hypothesize that uncharacterized error induced by variation in the collection patterns of organ surface data limits the accuracy and robustness of IGLS registration. Clinical validation of such registration methods is challenged due to the difficulty in obtaining data representative of the true state of organ deformation. We propose a novel human-to-phantom validation framework that transforms surface collection patterns from in vivo IGLS procedures (n=13) onto a well-characterized hepatic deformation phantom for the purpose of validating surface-driven, volumetric nonrigid registration methods...
February 13, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28211110/forconx-a-forcefield-conversion-tool-based-on-xml
#15
Volker Lesch, Diddo Diddens, Carlos E S Bernardes, Benjamin Golub, Alain Dequidt, Veronika Zeindlhofer, Marcello Sega, Christian Schröder
The force field conversion from one MD program to another one is exhausting and error-prone. Although single conversion tools from one MD program to another exist not every combination and both directions of conversion are available for the favorite MD programs Amber, Charmm, Dl-Poly, Gromacs, and Lammps. We present here a general tool for the force field conversion on the basis of an XML document. The force field is converted to and from this XML structure facilitating the implementation of new MD programs for the conversion...
April 5, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28208750/the-consequences-of-chromosome-segregation-errors-in-mitosis-and-meiosis
#16
REVIEW
Tamara Potapova, Gary J Gorbsky
Mistakes during cell division frequently generate changes in chromosome content, producing aneuploid or polyploid progeny cells. Polyploid cells may then undergo abnormal division to generate aneuploid cells. Chromosome segregation errors may also involve fragments of whole chromosomes. A major consequence of segregation defects is change in the relative dosage of products from genes located on the missegregated chromosomes. Abnormal expression of transcriptional regulators can also impact genes on the properly segregated chromosomes...
February 8, 2017: Biology
https://www.readbyqxmd.com/read/28207381/personalized-models-of-human-atrial-electrophysiology-derived-from-endocardial-electrograms
#17
Cesare Corrado, John Whitaker, Henry Chubb, Steven Williams, Matthew Wright, Jaswinder Gill, Mark O'Neill, Steven Niederer
OBJECTIVE: Computational models represent a novel framework for understanding the mechanisms behind atrial fibrillation (AF) and offer a pathway for personalizing and optimizing treatment. The characterization of local electrophysiological properties across the atria during procedures remains a challenge. The aim of this work is to characterize the regional properties of the human atrium from multi-electrode catheter measurements. METHODS: We propose a novel method that characterizes regional electrophysiology properties by fitting parameters of an ionic model to conduction velocity and effective refractory period restitution curves obtained by a s1 s2 pacing protocol applied through a multi-electrode catheter...
May 30, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28205551/applying-recovery-biomarkers-to-calibrate-self-report-measures-of-sodium-and-potassium-in-the-hispanic-community-health-study-study-of-latinos
#18
Y Mossavar-Rahmani, D Sotres-Alvarez, W W Wong, C M Loria, M D Gellman, L Van Horn, M H Alderman, J M Beasley, C M Lora, A M Siega-Riz, R C Kaplan, P A Shaw
Measurement error in assessment of sodium and potassium intake obscures associations with health outcomes. The level of this error in a diverse US Hispanic/Latino population is unknown. We investigated the measurement error in self-reported dietary intake of sodium and potassium and examined differences by background (Central American, Cuban, Dominican, Mexican, Puerto Rican and South American). In 2010-2012, we studied 447 participants aged 18-74 years from four communities (Miami, Bronx, Chicago and San Diego), obtaining objective 24-h urinary sodium and potassium excretion measures...
February 16, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28204947/an-empirical-assessment-of-the-relationship-between-official-development-aid-and-child-mortality-2000-2015
#19
Taylor Fahy Winkleman, Grace Bagwell Adams
OBJECTIVES: To analyze the effect of Official Development Aid (ODA) dollars on child mortality over the course of the United Nation's Millennium Development Goals initiative. METHODS: The relationship between child mortality and Official Development Aid over the duration of the Millennium Development Goals (2000-2015) is examined here using a longitudinal panel of country-level data from the World Bank and the United Nations. An Ordinary Least Squares regression approach was used with country-level fixed effects...
February 15, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28203213/high-resolution-audio-with-inaudible-high-frequency-components-induces-a-relaxed-attentional-state-without-conscious-awareness
#20
Ryuma Kuribayashi, Hiroshi Nittono
High-resolution audio has a higher sampling frequency and a greater bit depth than conventional low-resolution audio such as compact disks. The higher sampling frequency enables inaudible sound components (above 20 kHz) that are cut off in low-resolution audio to be reproduced. Previous studies of high-resolution audio have mainly focused on the effect of such high-frequency components. It is known that alpha-band power in a human electroencephalogram (EEG) is larger when the inaudible high-frequency components are present than when they are absent...
2017: Frontiers in Psychology
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