keyword
MENU ▼
Read by QxMD icon Read
search

Magnification

keyword
https://www.readbyqxmd.com/read/28432860/high-ki-67-expression-is-associated-with-prolactin-secreting-pituitary-adenomas
#1
Bogdan Bălinişteanu, Anca Maria Cîmpean, Amalia Raluca Ceauşu, Ana Silvia Corlan, Eugen Melnic, Marius Raica
Pituitary adenomas represent the third most common primary intracranial tumor in neurosurgical practice. To understand the biological behaviour of the pituitary adenomas previous studies have determined the tumor proliferation rate using monoclonal antibodies targeted against the Ki-67 antigen. The aim of this study was to correlate the Ki-67 index with hormonal profiles of pituitary adenomas. The study included 50 pituitary adenoma cases. For histopathologic evaluation, the sections were stained with routine hematoxylin and eosin method...
April 22, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28429839/pursuing-the-second-ipsilateral-gland-during-minimally-invasive-video-assisted-parathyroidectomy
#2
Cino Bendinelli, Andrew Gray, Hassan Suradi, Dieter G Weber, Shamasunder Acharya, Anna Price, Shaun McGrath
BACKGROUND: In patients with primary hyperparathyroidism (PHPT) and preoperative imaging suggesting a solitary parathyroid adenoma (SPA), focused parathyroidectomy is most often curative. Even so, large studies show up to 3% of patients experience persistent or recurrent PHPT. Unilateral neck exploration (UNE) aiming to identify the SPA and the other ipsilateral parathyroid may reduce this failure rate. We hypothesized that: (i) minimally invasive video-assisted (MIVA) approach would facilitate UNE and (ii) this would be a clinically relevant strategy...
April 21, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28428419/iptf16geu-a-multiply-imaged-gravitationally-lensed-type-ia-supernova
#3
A Goobar, R Amanullah, S R Kulkarni, P E Nugent, J Johansson, C Steidel, D Law, E Mörtsell, R Quimby, N Blagorodnova, A Brandeker, Y Cao, A Cooray, R Ferretti, C Fremling, L Hangard, M Kasliwal, T Kupfer, R Lunnan, F Masci, A A Miller, H Nayyeri, J D Neill, E O Ofek, S Papadogiannakis, T Petrushevska, V Ravi, J Sollerman, M Sullivan, F Taddia, R Walters, D Wilson, L Yan, O Yaron
We report the discovery of a multiply imaged, gravitationally lensed type Ia supernova, iPTF16geu (SN 2016geu), at redshift z = 0.409. This phenomenon was identified because the light from the stellar explosion was magnified more than 50 times by the curvature of space around matter in an intervening galaxy. We used high-spatial-resolution observations to resolve four images of the lensed supernova, approximately 0.3 arc seconds from the center of the foreground galaxy. The observations probe a physical scale of ~1 kiloparsec, smaller than is typical in other studies of extragalactic gravitational lensing...
April 21, 2017: Science
https://www.readbyqxmd.com/read/28427725/association-of-mild-leg-length-discrepancy-and-degenerative-changes-in-the-hip-joint-and-lumbar-spine
#4
Kelvin J Murray, Tom Molyneux, Michael R Le Grande, Aurora Castro Mendez, Franz K Fuss, Michael F Azari
OBJECTIVE: The purpose of this study was to evaluate the correlation between mild leg length discrepancy (LLD) and degenerative joint disease (DJD) or osteoarthritis. METHODS: We evaluated standard postural lumbopelvic radiographs from 255 adults (121 women and 134 men) who had presented with spinal pain for chiropractic care. Symmetry of femoral head diameters was used to exclude magnification errors. Pearson's partial correlation was used to control for age and derive effect sizes for LLD on DJD in the hip and lower lumbar motion segments...
April 17, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28424734/influence-of-teeth-preparation-finishing-on-the-adaptation-of-lithium-disilicate-crowns
#5
Bruna Salamoni Sinhori, Mauro Amaral Caldeira de Andrada, Guilherme Carpena Lopes, Sylvio Monteiro Junior, Luiz Narciso Baratieri
The polishing step of teeth preparations for crowns is a step often performed, so that there is an increased time during the clinical procedure. The aim of this study is to evaluate the marginal and internal adaptation of all-ceramic CAD/CAM lithium disilicate crowns in polished preparations for crown and nonpolished preparations for crowns. For this purpose, 20 first molars were selected, which were divided into two groups (n = 10) G1, teeth that received surface roughening similar to preparation without polishing, and G2 (control), polished preparations...
2017: International Journal of Biomaterials
https://www.readbyqxmd.com/read/28419308/brain-invasion-in-meningiomas-clinical-considerations-and-impact-of-neuropathological-evaluation-a-systematic-review
#6
Benjamin Brokinkel, Katharina Hess, Christian Mawrin
With the release of the 2016 edition of the WHO Classification of Central Nervous System tumors, brain invasion in meningiomas has been added as a stand-alone criterion for atypia and can therefore impact grading and indirectly adjuvant therapy. Regarding this rising clinical importance, we have reviewed the current knowledge about brain invasion with emphasis on its implications on current and future clinical practice. We found various definitions of brain invasion and approaches for evaluation in surgically obtained specimen described over the past decades...
April 17, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/28410936/radiographic-and-clinical-analysis-of-lateral-epicondylitis
#7
Matthew Shillito, Maximillian Soong, Nicholas Martin
PURPOSE: The literature suggests that radiographs may be unnecessary in the initial evaluation of lateral epicondylitis because treatment is rarely altered as a result of the radiographic findings. The most commonly reported radiographic finding is calcification at the lateral epicondyle. Our goal was to perform a quantitative and qualitative analysis of this finding to determine its importance and possible relationship with various clinical factors and patient-reported measures. METHODS: All patients diagnosed with lateral epicondylitis by a single surgeon during a 5-year period were retrospectively reviewed...
April 12, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28409726/the-suboccipital-ligament
#8
Kelsey Alabaster, M Fred Bugg, Bruno Splavski, Frederick A Boop, Kenan I Arnautovic
OBJECTIVE A fibrous structure located dorsal to the dura at the posterior craniocervical junction stretches horizontally between the bilateral occipital condyles and the upper borders of the C-1 laminae. Partially covered by the occipital bone, this structure is always encountered when the bone is removed from the foramen magnum rim during approaches to the posterior cranial fossa. Although known to surgeons, this structure has not been defined, studied, or named. The most appropriate name for this structure is "the suboccipital ligament," and a detailed rationale for this name is provided...
April 14, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28406957/event-related-potentials-to-changes-in-facial-expression-in-two-phase-transitions
#9
Michael J Wright, Lisa K Kuhn
The purpose of the study was to compare event-related potentials (ERPs) to different transitions between emotional and neutral facial expressions. The stimuli contained a single transition between two different images of the same face, giving a strong impression of changing expression though apparent motion whilst eliminating change in irrelevant stimulus variables such as image contrast or identity. Stimuli were calibrated for intensity, valence and perceived emotion category and only trials where the target emotion was correctly identified were included...
2017: PloS One
https://www.readbyqxmd.com/read/28402737/comparison-of-polymerization-shrinkage-physical-properties-and-marginal-adaptation-of-flowable-and-restorative-bulk-fill-resin-based-composites
#10
J H Jung, S H Park
PURPOSE: The purpose of this study was to compare the marginal adaptation of two flowable bulk fill resin-based composites (FB-RBCs), two restorative bulk fill resin-based composites (RB-RBCs), and one regular incremental-fill RBC in MOD cavities in vitro. Additionally, the influence of linear polymerization shrinkage, shrinkage force, flexural modulus, and bottom/top surface hardness ratio on the marginal adaptation was evaluated. METHODS: A Class II MOD cavity was prepared in 40 extracted sound lower molars...
April 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28402733/effect-of-surface-treatment-silane-and-universal-adhesive-on-microshear-bond-strength-of-nanofilled-composite-repairs
#11
I A Fornazari, I Wille, E M Meda, R T Brum, E M Souza
PURPOSE: The aim of this study was to evaluate the effect of surface treatment and universal adhesive on the microshear bond strength of nanoparticle composite repairs. METHODS: One hundred and forty-four specimens were built with a nanofilled composite (Filtek Supreme Ultra, 3M ESPE). The surfaces of all the specimens were polished with SiC paper and stored in distilled water at 37°C for 14 days. Half of the specimens were then air abraded with Al2O3 particles and cleaned with phosphoric acid...
April 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28397298/micromorphological-differences-of-the-implant-abutment-junction-and-in%C3%A2-vitro-load-testing-for-three-different-titanium-abutments-on-straumann-tissue-level-implants
#12
N Mattheos, C Larsson, L Ma, G Fokas, V Chronopoulos, M Janda
BACKGROUND: The aim of this study was to investigate the micromorphological differences among three commercially available titanium abutments on Straumann implants. Furthermore, the possible impact of functional loading on the micromorphology and potential complications was investigated with the use of in vitro testing. MATERIAL AND METHODS: Three groups of Titanium abutments (A: Straumann Variobase n = 5, B: EBI best Duo n = 5, and C: Implant Direct n = 5) were torqued on Straumann RN implants, as according to each of the manufacturer's instructions...
April 11, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28396985/do-dietary-habits-influence-trace-elements-release-from-fixed-orthodontic-appliances
#13
Paulina Wołowiec, Katarzyna Chojnacka, Bartłomiej W Loster, Marcin Mikulewicz
The objective was to investigate the effect of dietary habits on the release of Cr and Ni ions from orthodontic appliances by hair mineral analysis. Patients (N = 47) underwent electronic questionnaire survey to investigate the effect of dietary habits on Cr and Ni levels in hair. The research was carried out on hair sampled at the beginning and in the 4th, 8th, and 12th months of the treatment. The content of Cr and Ni in the collected samples was determined by ICP-OES. The study showed that consumption of acidic dietary products may have the effect on increasing the release of Cr and Ni ions from orthodontic appliances...
April 11, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28395561/acoustic-and-perceptual-effects-of-magnifying-interaural-difference-cues-in-a-simulated-binaural-hearing-aid
#14
Tobias de Taillez, Giso Grimm, Birger Kollmeier, Tobias Neher
OBJECTIVE: To investigate the influence of an algorithm designed to enhance or magnify interaural difference cues on speech signals in noisy, spatially complex conditions using both technical and perceptual measurements. To also investigate the combination of interaural magnification (IM), monaural microphone directionality (DIR), and binaural coherence-based noise reduction (BC). DESIGN: Speech-in-noise stimuli were generated using virtual acoustics. A computational model of binaural hearing was used to analyse the spatial effects of IM...
April 10, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28392818/comparison-of-push-out-bond-strength-of-two-bulk-fill-and-one-conventional-composite-to-intracanal-dentin-in-severely-damaged-primary-anterior-teeth
#15
Shahram Mosharrafian, Zeynab Sharifi
OBJECTIVES: This study sought to compare the push-out bond strength of two bulk-fill and one conventional composite to intracanal dentin in primary anterior teeth. MATERIALS AND METHODS: This in vitro, experimental study was conducted on 39 primary anterior teeth, which were randomly divided into three groups. After cleaning and shaping, the root canals were filled with Metapex in such a way that after the application of 1mm light-cure liner on top of it, the coronal 3mm of the canal remained empty for composite post space...
June 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28389672/contact-angle-measurement-of-small-capillary-length-liquid-in-super-repelled-state
#16
Tingyi Leo Liu, Chang-Jin Cj Kim
The difficulty of measuring very large contact angles (>150 degrees) has become more relevant with the increased popularity of super-repellent surfaces. Measurement is more difficult for dynamic contact angles, for which theoretical profiles do not fit well, and small capillary length liquids, whose sessile droplets sag by gravity. Here, we expand the issue to the limit by investigating dynamic contact angles of liquids with an extremely small capillary length (<1.0 mm), empowered by the superomniphobic surface that can super-repel even fluorinated solvents, which highly wet all materials...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28388698/the-magnification-factor-accounts-for-the-greater-hypometria-and-imprecision-of-larger-saccades-evidence-from-a-parametric-human-behavioral-study
#17
Françoise Vitu, Soazig Casteau, Hossein Adeli, Gregory J Zelinsky, Eric Castet
Saccades quite systematically undershoot a peripheral visual target by about 10% of its eccentricity while becoming more variable, mainly in amplitude, as the target becomes more peripheral. This undershoot phenomenon has been interpreted as the strategic adjustment of saccadic gain downstream of the superior colliculus (SC), where saccades are programmed. Here, we investigated whether the eccentricity-related increase in saccades' hypometria and imprecision might not instead result from overrepresentation of space closer to the fovea in the SC and visual-cortical areas...
April 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28387696/convolution-based-scatter-correction-using%C3%A2-kernels-combining-measurements-and%C3%A2-monte-carlo-simulations
#18
Navnina Bhatia, David Tisseur, Jean Michel Létang
One of the well-recognized challenge of Cone-Beam Computed Tomography (CBCT) is scatter contamination within the projection images. Scatter degrades the image quality by decreasing the contrast, introducing cupping and shading artifacts and thus leading to inaccuracies in the reconstructed values. The higher scatter to primary ratio experienced in industrial applications leads to even more important artifacts. Various strategies have been investigated to manage the scatter signal in CBCT projection data. One of these strategies is to calculate the scatter intensity by deconvolution of primary intensity using Scatter Kernel Superposition (SKS)...
April 5, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28387382/non-interferometric-phase-retrieval-using-refractive-index-manipulation
#19
Chyong-Hua Chen, Hsin-Feng Hsu, Hou-Ren Chen, Wen-Feng Hsieh
We present a novel, inexpensive and non-interferometric technique to retrieve phase images by using a liquid crystal phase shifter without including any physically moving parts. First, we derive a new equation of the intensity-phase relation with respect to the change of refractive index, which is similar to the transport of the intensity equation. The equation indicates that this technique is unneeded to consider the variation of magnifications between optical images. For proof of the concept, we use a liquid crystal mixture MLC 2144 to manufacture a phase shifter and to capture the optical images in a rapid succession by electrically tuning the applied voltage of the phase shifter...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28385435/effect-of-repeated-ceramic-firings-on-the-marginal-and-internal-adaptation-of-metal-ceramic-restorations-fabricated-with-different-cad-cam-technologies
#20
Hasan Kocaağaoğlu, Haydar Albayrak, Halil Ibrahim Kilinc, Hasan Önder Gümüs
STATEMENT OF PROBLEM: The use of computer-aided design and computer-aided manufacturing (CAD-CAM) for metal ceramic restorations has increased with advances in the technology. However, little is known about the marginal and internal adaptation of restorations fabricated using laser sintering (LS) and soft milling (SM). Moreover, the effects of repeated ceramic firings on the marginal and internal adaptation of metal ceramic restorations fabricated with LS and SM is also unknown. PURPOSE: The purpose of this in vitro study was to investigate the effects of repeated ceramic firings on the marginal and internal adaptation of metal ceramic copings fabricated using the lost wax (LW), LS, and SM techniques...
April 3, 2017: Journal of Prosthetic Dentistry
keyword
keyword
78033
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"