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https://www.readbyqxmd.com/read/28107658/validation-of-a-personalized-curved-muscle-model-of-the-lumbar-spine-during-complex-dynamic-exertions
#1
Jaejin Hwang, Gregory G Knapik, Jonathan S Dufour, Thomas M Best, Safdar N Khan, Ehud Mendel, William S Marras
Previous curved muscle models have typically examined their robustness only under simple, single-plane static exertions. In addition, the empirical validation of curved muscle models through an entire lumbar spine has not been fully realized. The objective of this study was to empirically validate a personalized biologically-assisted curved muscle model during complex dynamic exertions. Twelve subjects performed a variety of complex lifting tasks as a function of load weight, load origin, and load height. Both a personalized curved muscle model as well as a straight-line muscle model were used to evaluate the model's fidelity and prediction of three-dimensional spine tissue loads under different lifting conditions...
January 9, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28106463/long-term-results-after-arthroscopic-repair-of-isolated-subscapularis-tears
#2
Gernot Seppel, Johannes E Plath, Christopher Völk, Wolfgang Seiberl, Stefan Buchmann, Simone Waldt, Andreas B Imhoff, Sepp Braun
BACKGROUND: Although some reports have presented short- to midterm results after arthroscopic repair of isolated subscapularis (SSC) tendon tears, long-term evaluation is still lacking. HYPOTHESIS: Long-term results after arthroscopic repair of isolated SSC tears are comparable with the functional and radiological short- to midterm outcomes described in the literature. STUDY DESIGN: Case series, Level of evidence, 4. METHODS: This study assessed 17 patients (5 females and 12 males; mean age, 45...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28106133/prototypical-topological-orbital-ferromagnet-%C3%AE-femn
#3
Jan-Philipp Hanke, Frank Freimuth, Stefan Blügel, Yuriy Mokrousov
We predict from first principles an entirely topological orbital magnetization in the noncoplanar bulk antiferromagnet γ-FeMn originating in the nontrivial topology of the underlying spin structure, without any reference to spin-orbit interaction. Studying the influence of strain, composition ratio, and spin texture on the topological orbital magnetization and the accompanying topological Hall effect, we promote the scalar spin chirality as key mechanism lifting the orbital degeneracy. The system is thus a prototypical topological orbital ferromagnet, the macroscopic orbital magnetization of which is prominent even without spin-orbit coupling...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103140/avoiding-accidents-at-the-champagne-reception
#4
Giovanni Pezzulo, Pierpaolo Iodice, Francesco Donnarumma, Haris Dindo, Günther Knoblich
Using a lifting and balancing task, we contrasted two alternative views of planning joint actions: one postulating that joint action involves distinct predictions for self and other, the other postulating that joint action involves coordinated plans between the coactors and reuse of bimanual models. We compared compensatory movements required to keep a tray balanced when 2 participants lifted glasses from each other's trays at the same time (simultaneous joint action) and when they took turns lifting (sequential joint action)...
January 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28103119/iatrogenic-spinal-cord-injury-in-a-trauma-patient-with-ankylosing-spondylitis
#5
Ahmad Maarouf, Colleen M McQuown, Jennifer A Frey, Rami A Ahmed, Lisa Derrick
BACKGROUND: The recommended practice for over 30 years has been to routinely immobilize patients with unstable cervical spinal injuries using cervical spinal collars. It is shown that patients with Ankylosing spondylitis (AS) are four times more likely to suffer a spinal fracture compared to the general population and have an eleven-fold greater risk of spinal cord injury. Current protocols of spinal immobilization were responsible for secondary neurologic deterioration in some of these patients...
January 19, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28101497/the-factors-that-influence-postoperative-stability-of-the-dental-implants-in-posterior-edentulous-maxilla
#6
Yun-Ho Kim, Na-Rae Choi, Yong-Deok Kim
BACKGROUND: All clinicians are aware of the difficulty of installing a dental implant in posterior maxilla because of proximate position of maxillary sinus, insufficient bone width, and lower bone density. This study is to examine which factors will make the implantation in the posterior maxilla more difficult, and which factors will affect the postoperative implant stability in this region. METHODS: Five hundred seventy-three fixtures on the maxilla posterior were included for this study from all the patients who underwent an installation of the dental implant fixture from January 2010 to December 2014 at the Department of Oral and Maxillofacial Surgery in Pusan National University Dental Hospital (Yangsan, Korea)...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28101134/single-cell-isolation-process-with-laser-induced-forward-transfer
#7
Yu Deng, Philippe Renaud, Zhongning Guo, Zhigang Huang, Ying Chen
BACKGROUND: A viable single cell is crucial for studies of single cell biology. In this paper, laser-induced forward transfer (LIFT) was used to isolate individual cell with a closed chamber designed to avoid contamination and maintain humidity. Hela cells were used to study the impact of laser pulse energy, laser spot size, sacrificed layer thickness and working distance. The size distribution, number and proliferation ratio of separated cells were statistically evaluated. Glycerol was used to increase the viscosity of the medium and alginate were introduced to soften the landing process...
2017: Journal of Biological Engineering
https://www.readbyqxmd.com/read/28100099/a-user-centered-qualitative-study-on-experiences-with-ankle-foot-orthoses-and-suggestions-for-improved-design
#8
Dymphy van der Wilk, Juha Markus Hijmans, Klaas Postema, Gijsbertus Jacob Verkerke
BACKGROUND: Improving ankle-foot orthosis design can best be done by implementing a user-centered approach. OBJECTIVE: To provide insight into the ideas of ankle-foot orthosis users with flaccid ankle muscle paresis on the importance of activities and suggestions for an improved ankle-foot orthosis design. STUDY DESIGN: A focus-group discussion with eight ankle-foot orthosis users (57 ± 5 years, 50% female). METHODS: Main inclusion criteria were as follows: ⩾18 years, unable to stand on tip-toe and unable to lift toes...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28099278/recurrent-median-nerve-injury-in-a-weight-lifter
#9
Michael A Worobel, Bobby Alexander, Mark Hirsch, Vu Nguyen
Recurrent median neuropathy is an uncommon injury that can be commonly mistaken for other pathological causes. It is important to be aware of the potential causes and symptoms of injury as delay in diagnosis can lead to permanent decrease in hand function and disability. This case is a description of a 33-year-old male patient who previously presented with radicular symptoms and had complete resolution of his pain after a C7 selective nerve root block. Several months after presentation, he developed significant thenar atrophy, localized pain, and weakness associated with weight lifting activities...
February 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28098615/a-rising-tide-lifts-all-boats-increased-ventilation-may-be-involved-in-accelerated-recovery-from-isoflurane-anesthesia-after-flumazenil-administration
#10
Andrey B Petrenko, Hiroshi Baba
No abstract text is available yet for this article.
February 2017: Anesthesiology
https://www.readbyqxmd.com/read/28096758/effects-of-acute-ingestion-of-a-pre-workout-dietary-supplement-with-and-without-p-synephrine-on-resting-energy-expenditure-cognitive-function-and-exercise-performance
#11
Y Peter Jung, Conrad P Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S Murano, Mike Greenwood, Richard B Kreider
BACKGROUND: The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exercise performance, and markers of safety. METHODS: In a randomized, double-blind, and counterbalanced manner; 25 healthy and recreationally active male and female participants ingested a flavored maltodextrin placebo (PLA), a PWS containing beta-alanine (3 g), creatine nitrate as a salt (2 g), arginine alpha-ketoglutarate (2 g), N-Acetyl-L-Tyrosine (300 mg), caffeine (284 mg), Mucuna pruiriens extract standardized for 15% L-Dopa (15 mg), Vitamin C as Ascorbic Acid (500 mg), niacin (60 mg), folate as folic acid (50 mg), and Vitamin B12 as Methylcobalamin (70 mg) with 2 g of maltodextrin and flavoring; or, the PWS with Citrus aurantium (PWS + S) extract standardized for 30% p-synephrine (20 mg)...
2017: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/28095536/improved-neocollagenesis-and-skin-mechanical-properties-after-injection-of-diluted-calcium-hydroxylapatite-in-the-neck-and-de%C3%AC-colletage-a-pilot-study
#12
Yana Alexandrovna Yutskovskaya, Evgeniya Alexandrovna Kogan
BACKGROUND: Calcium hydroxylapatite (CaHA; Radiesse (R)) provides safe and effective correction of moderate-to-deep lines, volume replacement, lift and contour, and induction of neocollagenesis and neoelastogenesis for improved skin quality. CaHA hyperdilution takes advantage of its skin-tightening properties without a volumizing effect. OBJECTIVE: To evaluate the collagen- and elastin-stimulating effects of diluted CaHA in subjects with skin laxity in the neck and décolletage...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28094917/tuning-the-ignition-performance-of-a-micro-chip-initiator-by-integrating-various-al-moo3-rmfs-on-a-semiconductor-bridge
#13
Jianbing Xu, Yu Tai, Chengbo Ru, Ji Dai, Yinghua Ye, Ruiqi Shen, Peng Zhu
Reactive multilayer films (RMFs) can be integrated into semiconducting electronic structures with the use of microelectromechanical systems (MEMS) technology, and represent potential applications in the advancement of microscale energy-demanding systems. In this study, aluminum/ molybdenum trioxide (Al/MoO3) -based RMFs with different modulation periods were integrated on a semiconductor bridge (SCB) using a combination of image reversal lift-off process and magnetron sputtering technology. This produced an energetic semiconductor bridge (ESCB)-chip initiator with controlled ignition performance...
January 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28093169/re-prospective-randomized-multinational-study-of-prostatic-urethral-lift-versus-transurethral-resection-of-the-prostate-12-month-results-from-the-bph6-study
#14
https://www.readbyqxmd.com/read/28092950/two-phase-contiguous-supported-lipid-bilayer-model-for-membrane-rafts-via-polymer-blotting-and-stenciling
#15
Mark Jason Richards, Susan Daniel
The supported lipid bilayer has been portrayed as a useful model of the cell membrane compatible with many biophysical tools and techniques that demonstrate its appeal in learning about the basic features of the plasma membrane. However, some of its potential has yet to be realized, particularly in the area of bilayer patterning and phase/composition heterogeneity. In this work, we generate contiguous bilayer patterns as a model system that captures the general features of membrane domains and lipid rafts. Micropatterned polymer templates of two types are investigated for generating patterned bilayer formation: polymer blotting and polymer lift-off stenciling...
January 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28092777/controlling-the-3d-architecture-of-self-lifting-auto-generated-tissue-equivalents-slates-for-optimized-corneal-graft-composition-and-stability
#16
Ricardo M Gouveia, Elena González-Andrades, Juan C Cardona, Carmen González-Gallardo, Ana M Ionescu, Ingrid Garzon, Miguel Alaminos, Miguel González-Andrades, Che J Connon
Ideally, biomaterials designed to play specific physical and physiological roles in vivo should comprise components and microarchitectures analogous to those of the native tissues they intend to replace. For that, implantable biomaterials need to be carefully designed to have the correct structural and compositional properties, which consequently impart their bio-function. In this study, we showed that the control of such properties can be defined from the bottom-up, using smart surface templates to modulate the structure, composition, and bio-mechanics of human transplantable tissues...
March 2017: Biomaterials
https://www.readbyqxmd.com/read/28092639/lithographic-patterning-of-antibodies-by-direct-lift-off-and-improved-surface-adhesion
#17
Sankalp Verma, Vivek Verma
The inherent property of antibodies binding to their antigen with high specificity makes them a strong candidate for sensing and detection applications. Microscale patterning of antibodies is desired for the miniaturization of sensors and fundamental cell biology studies. However, existing methodologies to pattern antibodies at the microscale are multi-step. In this work, we demonstrate microscale patterning of antibodies on a glass coverslip in a single step photolithography process. The microscale features of the photoresist were generated on the coverslip using photolithography, and the antibody solution was incubated...
January 16, 2017: Biofabrication
https://www.readbyqxmd.com/read/28091950/nanorods-on-surface-of-gan-based-thin-film-leds-deposited-by-post-annealing-after-photo-assisted-chemical-etching
#18
Lung-Chien Chen, Wun-Wei Lin, Te-Yu Liu
This study investigates the optoelectronic characteristics of gallium nitride (GaN)-based thin-film light-emitting diodes (TF-LEDs) that are formed by a two-step transfer process that involves wet etching and post-annealing. In the two-step transfer process, GaN LEDs were stripped from sapphire substrates by the laser lift-off (LLO) method using a KrF laser and then transferred onto ceramic substrates. Ga-K nanorods were formed on the surface of the GaN-based TF-LEDs following photo-assisted chemical etching and photo-enhanced post-annealing at 100 °C for 1 min...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28088305/inertial-particle-dynamics-in-large-artery-flows-implications-for-modeling-arterial-embolisms
#19
Debanjan Mukherjee, Shawn C Shadden
The complexity of inertial particle dynamics through swirling chaotic flow structures characteristic of pulsatile large-artery hemodynamics renders significant challenges in predictive understanding of transport of such particles. This is specifically crucial for arterial embolisms, where knowledge of embolus transport to major vascular beds helps in disease diagnosis and surgical planning. Using a computational framework built upon image-based CFD and discrete particle dynamics modeling, a multi-parameter sampling-based study was conducted on embolic particle dynamics and transport...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28081288/short-dental-implants-6-mm-versus-long-dental-implants-11-15-mm-in-combination-with-sinus-floor-elevation-procedures-3-year-results-from-a-multi-center-randomized-controlled-clinical-trial
#20
Veronika Pohl, Daniel S Thoma, Katarzyna Sporniak-Tutak, Abel Garcia-Garcia, Thomas D Taylor, Robert Haas, Christoph H F Hämmerle
AIM: To test whether or not the use of short dental implants (6 mm) results in an implant survival rate similar to that with longer implants (11-15 mm) in combination with sinus grafting. METHODS: This multi-center study enrolled 101 patients with partial edentulism in the posterior maxilla and a remaining bone height of 5-7 mm. Included patients were randomly assigned to receive short implants (6 mm; GS / group short) or long implants (11-15 mm) simultaneously with sinus grafting (GG / group graft)...
January 12, 2017: Journal of Clinical Periodontology
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