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https://www.readbyqxmd.com/read/27911456/mid-term-results-of-recap-magnum-taperloc-metal-on-metal-total-hip-arthroplasty-with-mean-follow-up-of-7-1-years
#1
Antonios A Koutalos, Aristotelis Kourtis, Ian C Clarke, Evert J Smith
INTRODUCTION: Despite enthusiasm for metal-on-metal bearings, disappointing short- to mid-term outcomes has all but halted the use of this bearing articulation. This review presents mid-term results for the ReCap Magnum total hip replacement. PATIENTS AND METHODS: This prospective study evaluated 79 ReCap/Magnum/Taperloc total hip replacements with mean follow-up of 7.1 (range 3.7-9.2) years. 43 were female and 36 male. Metal ions were measured and radiographic measurement included a 'margin of safety' angle to quantify risk of edge loading...
December 2, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27911368/immunohistochemical-analysis-in-the-rat-central-nervous-system-and-peripheral-lymph-node-tissue-sections
#2
Milena Z Adzemovic, Manuel Zeitelhofer, Marianne Leisser, Ulricke Köck, Angela Kury, Tomas Olsson
Immunohistochemistry (IHC) provides highly specific, reliable and attractive protein visualization. Correct performance and interpretation of an IHC-based multicolor labeling is challenging, especially when utilized for assessing interrelations between target proteins in the tissue with a high fat content such as the central nervous system (CNS). Our protocol represents a refinement of the standard immunolabeling technique particularly adjusted for detection of both structural and soluble proteins in the rat CNS and peripheral lymph nodes (LN) affected by neuroinflammation...
November 14, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911357/characterization-of-metabolic-status-in-nonhuman-primates-with-the-intravenous-glucose-tolerance-test
#3
Michael Staup, George Aoyagi, TeQuana Bayless, Yixin Wang, Keefe Chng
The intravenous glucose tolerance test (IVGTT) plays a key role in the characterization of glucose homeostasis. When taken together with serum biochemical profiles, inclusive of blood glucose levels in both the fed and fasted state, HbA1c, insulin levels, clinical history of diet, body composition, and body weight status, an assessment of normal and abnormal glycemic control can be made. Interpretation of an IVGTT is done through measurement of changes in glucose and insulin levels over time in relation to the dextrose challenge...
November 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911035/content-validity-of-the-credibility-and-expectancy-questionnaire-in-a-pain-rehabilitation-setting
#4
Vera-Christina Mertens, Albine Moser, Jeanine Verbunt, Rob Smeets, Mariëlle Goossens
: Content validity, the proper reflection of the concept to be measured, is yet unknown for the Credibility and Expectancy Questionnaire (CEQ). It is frequently used in pain rehabilitation because treatment expectancy is influential on the outcome. OBJECTIVE: To test and improve the content validity of the CEQ in a sample of patients with chronic pain in different phases of their treatment. METHODS: A qualitative observational study design using the Three-Step Test-Interview method was used...
December 2, 2016: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/27911002/what-is-quality-of-life-and-how-do-we-measure-it-relevance-to-parkinson-s-disease-and-movement-disorders
#5
REVIEW
Pablo Martinez-Martin
Health-related quality of life is a patient-reported outcome that complements clinical evaluation and provides information about disease activity and effects of the treatment. The objective of this review is to present the conceptual framework, the measures, and some of their most relevant applications in the field of Parkinson's disease and movement disorders. Health-related quality of life is a subjective, individual, and multidimensional construct, and its main dimensions are physical, mental, and social, besides global perceptions of health and personal domains...
December 2, 2016: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/27910946/ki-67-in-endometrial-cancer-scoring-optimization-and-prognostic-relevance-for-window-studies
#6
Sarah Kitson, Vanitha N Sivalingam, James Bolton, Rhona McVey, Mashid Nickkho-Amiry, Melanie E Powell, Alexandra Leary, Hans W Nijman, Remi A Nout, Tjalling Bosse, Andrew G Renehan, Henry C Kitchener, Richard J Edmondson, Emma J Crosbie
Ki-67, a marker of cellular proliferation, is increasingly being used in pre-surgical window studies in endometrial cancer as a primary outcome measure. Unlike in breast cancer, however, there are no guidelines standardizing its measurement and its clinical relevance as a response biomarker is undetermined. It is, therefore, imperative that Ki-67 scoring protocols are optimized and its association with patient survival rigorously evaluated, in order to be able to clinically interpret the results of these studies...
December 2, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27910922/the-influence-of-laser-scribing-on-magnetic-domain-formation-in-grain-oriented-electrical-steel-visualized-by-directional-neutron-dark-field-imaging
#7
P Rauscher, B Betz, J Hauptmann, A Wetzig, E Beyer, C Grünzweig
The performance and degree of efficiency of transformers are directly determined by the bulk magnetic properties of grain oriented electrical steel laminations. The core losses can be improved by post manufacturing methods, so-called domain refinement techniques. All these methods induce mechanical or thermal stress that refines the domain structure. The most commonly used technique is laser scribing due to the no-contact nature and the ease of integration in existing production systems. Here we show how directional neutron dark-field imaging allows visualizing the impact of laser scribing on the bulk and supplementary domain structure...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910819/comment-on-imaging-of-prompt-gamma-rays-emitted-during-delivery-of-clinical-proton-beams-with-a-compton-camera-feasibility-studies-for-range-verification
#8
Arkadiusz Sitek
The origin ensemble (OE) algorithm is a new method used for image reconstruction from nuclear tomographic data. The main advantage of this algorithm is the ease of implementation for complex tomographic models and the sound statistical theory. In this comment, the author provides the basics of the statistical interpretation of OE and gives suggestions for the improvement of the algorithm in the application to prompt gamma imaging as described in Polf et al (2015 Phys. Med. Biol. 60 7085).
December 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27910738/cartilage-repair-in-the-degenerative-ageing-knee
#9
Mats Brittberg, Andreas H Gomoll, José A Canseco, Jack Far, Martin Lind, James Hui
Background and purpose - Cartilage damage can develop due to trauma, resulting in focal chondral or osteochondral defects, or as more diffuse loss of cartilage in a generalized organ disease such as osteoarthritis. A loss of cartilage function and quality is also seen with increasing age. There is a spectrum of diseases ranging from focal cartilage defects with healthy surrounding cartilage to focal lesions in degenerative cartilage, to multiple and diffuse lesions in osteoarthritic cartilage. At the recent Aarhus Regenerative Orthopaedics Symposium (AROS) 2015, regenerative challenges in an ageing population were discussed by clinicians and basic scientists...
December 2, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27910732/binding-of-anti-cardiovascular-drug-to-serum-albumin-an-insight-in-the-light-of-spectroscopic-and-computational-approaches
#10
Tajalli Ilm Chandel, Gulam Rabbani, MohsinVahid Khan, Masihuz Zaman, Parvez Alam, Yasser Shahein, Rizwan Hasan Khan
Isoprenaline hydrochloride is a potential cardiovascular drug helps in the smooth functioning of the heart muscles. So, we have performed the binding study of ISO with BSA. This study was investigated by UV absorption, fluorescence, synchronous fluorescence, circular dichroism etc. The analysis of intrinsic fluorescence data showed the low binding affinity of ISO. The binding constant Kb was 2.8×103 M-1 and binding stoichiometry (n) was approximately one and the Gibb's free energy change at 310 K was determined to be -8...
December 2, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27910731/selective-attention-to-emotional-prosody-in-social-anxiety-a-dichotic-listening-study
#11
Virginie Peschard, Eva Gilboa-Schechtman, Pierre Philippot
The majority of evidence on social anxiety (SA)-linked attentional biases to threat comes from research using facial expressions. Emotions are, however, communicated through other channels, such as voice. Despite its importance in the interpretation of social cues, emotional prosody processing in SA has been barely explored. This study investigated whether SA is associated with enhanced processing of task-irrelevant angry prosody. Fifty-three participants with high and low SA performed a dichotic listening task in which pairs of male/female voices were presented, one to each ear, with either the same or different prosody (neutral or angry)...
December 2, 2016: Cognition & Emotion
https://www.readbyqxmd.com/read/27910694/mhd-marking-using-the-mse-polarimeter-optics-in-ilw-jet-plasmas
#12
S Reyes Cortes, B Alper, D Alves, M Baruzzo, J Bernardo, P Buratti, R Coelho, C Challis, I Chapman, N Hawkes, T C Hender, J Hobirk, E Joffrin
In this communication we propose a novel diagnostic technique, which uses the collection optics of the JET Motional Stark Effect (MSE) diagnostic, to perform polarimetry marking of observed MHD in high temperature plasma regimes. To introduce the technique, first we will present measurements of the coherence between MSE polarimeter, electron cyclotron emission, and Mirnov coil signals aiming to show the feasibility of the method. The next step consists of measuring the amplitude fluctuation of the raw MSE polarimeter signals, for each MSE channel, following carefully the MHD frequency on Mirnov coil data spectrograms...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910599/synthetic-plasma-edge-diagnostics-for-emc3-eirene-highlighted-for-wendelstein-7-x
#13
H Frerichs, F Effenberg, O Schmitz, C Biedermann, Y Feng, M Jakubowski, R König, M Krychowiak, J Lore, H Niemann, T S Pedersen, L Stephey, G A Wurden
Interpretation of spectroscopic measurements in the edge region of high-temperature plasmas can be a challenge since line of sight integration effects make direct interpretation in terms of quantitative, local emission strengths often impossible. The EMC3-EIRENE code-a 3D fluid edge plasma and kinetic neutral gas transport code-is a suitable tool for full 3D reconstruction of such signals. A versatile synthetic diagnostic module has been developed recently which allows the realistic 3D setup of various plasma edge diagnostics to be captured...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910584/fitting-of-the-thomson-scattering-density-and-temperature-profiles-on-the-compass-tokamak
#14
E Stefanikova, M Peterka, P Bohm, P Bilkova, M Aftanas, M Sos, J Urban, M Hron, R Panek
A new technique for fitting the full radial profiles of electron density and temperature obtained by the Thomson scattering diagnostic in H-mode discharges on the COMPASS tokamak is described. The technique combines the conventionally used modified hyperbolic tangent function for the edge transport barrier (pedestal) fitting and a modification of a Gaussian function for fitting the core plasma. Low number of parameters of this combined function and their straightforward interpretability and controllability provide a robust method for obtaining physically reasonable profile fits...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910566/hotspot-electron-temperature-from-x-ray-continuum-measurements-on-the-nif
#15
L C Jarrott, L R Benedetti, H Chen, N Izumi, S F Khan, T Ma, S R Nagel, O L Landen, A Pak, P K Patel, M Schneider, H A Scott
We report on measurements of the electron temperature in the hotspot of inertially confined, layered, spherical implosions on the National Ignition Facility using a differential filtering diagnostic. Measurements of the DT and DD ion temperatures using neutron time-of-flight detectors are complicated by the contribution of hot spot motion to the peak width, which produce an apparent temperature higher than the thermal temperature. The electron temperature is not sensitive to this non-thermal velocity and is thus a valuable input to interpreting the stagnated hot spot conditions...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910515/proton-pinhole-imaging-on-the-national-ignition-facility
#16
A B Zylstra, H-S Park, J S Ross, F Fiuza, J A Frenje, D P Higginson, C Huntington, C K Li, R D Petrasso, B Pollock, B Remington, H G Rinderknecht, D Ryutov, F H Séguin, D Turnbull, S C Wilks
Pinhole imaging of large (mm scale) carbon-deuterium (CD) plasmas by proton self-emission has been used for the first time to study the microphysics of shock formation, which is of astrophysical relevance. The 3 MeV deuterium-deuterium (DD) fusion proton self-emission from these plasmas is imaged using a novel pinhole imaging system, with up to five different 1 mm diameter pinholes positioned 25 cm from target-chamber center. CR39 is used as the detector medium, positioned at 100 cm distance from the pinhole for a magnification of 4 ×...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910471/the-national-ignition-facility-modular-kirkpatrick-baez-microscope
#17
L A Pickworth, J Ayers, P Bell, N F Brejnholt, J G Buscho, D Bradley, T Decker, S Hau-Riege, J Kilkenny, T McCarville, T Pardini, J Vogel, C Walton
Current two-dimensional X-ray imaging at the National Ignition Facility (NIF) uses time resolved pinhole cameras with ∼10-25 μm pinholes. This method has limitations in the smallest resolvable features that can be imaged with reasonable photon statistics for inertial confinement fusion (ICF) applications. ICF sources have a broadband self-emission spectrum that causes the pinhole images obtained, through thin foil filters, to contain a similarly broadband spectrum complicating the interpretation of structure in the source...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910450/first-order-reversal-curves-forc-analysis-of-individual-magnetic-nanostructures-using-micro-hall-magnetometry
#18
Merlin Pohlit, Paul Eibisch, Maryam Akbari, Fabrizio Porrati, Michael Huth, Jens Müller
Alongside the development of artificially created magnetic nanostructures, micro-Hall magnetometry has proven to be a versatile tool to obtain high-resolution hysteresis loop data and access dynamical properties. Here we explore the application of First Order Reversal Curves (FORC)-a technique well-established in the field of paleomagnetism for studying grain-size and interaction effects in magnetic rocks-to individual and dipolar-coupled arrays of magnetic nanostructures using micro-Hall sensors. A proof-of-principle experiment performed on a macroscopic piece of a floppy disk as a reference sample well known in the literature demonstrates that the FORC diagrams obtained by magnetic stray field measurements using home-built magnetometers are in good agreement with magnetization data obtained by a commercial vibrating sample magnetometer...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910433/calibrating-ion-density-profile-measurements-in-ion-thruster-beam-plasma
#19
Zun Zhang, Haibin Tang, Junxue Ren, Zhe Zhang, Joseph Wang
The ion thruster beam plasma is characterized by high directed ion velocity (10(4) m/s) and low plasma density (10(15) m(-3)). Interpretation of measurements of such a plasma based on classical Langmuir probe theory can yield a large experimental error. This paper presents an indirect method to calibrate ion density determination in an ion thruster beam plasma using a Faraday probe, a retarding potential analyzer, and a Langmuir probe. This new method is applied to determine the plasma emitted from a 20-cm-diameter Kaufman ion thruster...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910204/recommended-standards-for-assessing-blood-pressure-in-human-research-where-blood-pressure-or-hypertension-is-a-major-focus
#20
(no author information available yet)
Although inaccurate, nonreproducible blood pressure values can result from nonstandardized assessments, recommended approaches to standardize blood pressure measurement are often not followed in research studies. An expert consensus of national and international health and scientific organizations developed recommended minimum standards for assessing blood pressure in research subjects where: (1) blood pressure or hypertension is a major end point, or (2) blood pressure is likely a major mediator of the research outcome...
December 2, 2016: Journal of Clinical Hypertension
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