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https://www.readbyqxmd.com/read/28217424/joint-mobilization-in-the-management-of-persistent-insertional-achilles-tendinopathy-a-case-report
#1
Dhinu J Jayaseelan, Andrew A Post, John J Mischke, Josiah D Sault
BACKGROUND & PURPOSE: Insertional Achilles tendinopathy (IAT) can be a challenging condition to manage conservatively. Eccentric exercise is commonly used in the management of chronic tendinopathy; however, it may not be as helpful for insertional tendon problems as compared to mid-portion dysfunction. While current evidence describing the physical therapy management of IAT is developing, gaps still exist in descriptions of best practice. The purpose of this case report is to describe the management of a patient with persistent IAT utilizing impairment-based joint mobilization, self-mobilization, and exercise...
February 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28215058/effect-of-cervical-versus-thoracic-spinal-manipulation-on-peripheral-neural-features-and-grip-strength-in-subjects-with-chronic-mechanical-neck-pain-a-randomized-controlled-trial
#2
Francisco Bautista-Aguirre, Ángel Oliva-Pascual-Vaca, Alberto M Heredia-Rizo, Juan J Boscá-Gandía, François Ricard, Cleofás Rodriguez-Blanco
BACKGROUND: Cervical and thoracic spinal manipulative therapy has shown positive impact for relief of pain and improve function in non-specific mechanical neck pain. Several attempts have been made to compare their effectiveness although previous studies lacked a control group, assessed acute neck pain or combined thrust and nonthrust techniques. AIM: To compare the immediate effects of cervical and thoracic spinal thrust manipulations on mechanosensitivity of upper limb nerve trunks and grip strength in patients with chronic non-specific mechanical neck pain...
February 17, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28213146/linear-ultrasonic-motor-for-absolute-gravimeter
#3
Yue Jian, Zhiyuan Yao, Vadim V Silberschmidt
Thanks to their compactness and suitability for vacuum applications, linear ultrasonic motors are considered as substitutes for classical electromagnetic motors as driving elements in absolute gravimeters. Still, their application is prevented by relatively low power output. To overcome this limitation and provide better stability, a V-type linear ultrasonic motor with a new clamping method is proposed for a gravimeter. In this paper, a mechanical model of stators with flexible clamping components is suggested, according to a design criterion for clamps of linear ultrasonic motors...
February 1, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28199222/liquid-crystals-in-micron-scale-droplets-shells-and-fibers
#4
Martin Urbanski, Catherine G Reyes, JungHyun Noh, Anshul Sharma, Yong Geng, Venkata Subba Rao Jampani, Jan P F Lagerwall
The extraordinary responsiveness and large diversity of self-assembled structures of liquid crystals are well documented and they have been extensively used in devices like displays. For long, this application route strongly influenced academic research, which frequently focused on the performance of liquid crystals in display-like geometries, typically between flat, rigid substrates of glass or similar solids. Today a new trend is clearly visible, where liquid crystals confined within curved, often soft and flexible, interfaces are in focus...
February 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28196452/an-investigation-of-force-components-in-orthogonal-cutting-of-medical-grade-cobalt-chromium-alloy-astm-f1537
#5
Szymon Baron, Eamonn Ahearne
An ageing population, increased physical activity and obesity are identified as lifestyle changes that are contributing to the ongoing growth in the use of in-vivo prosthetics for total hip and knee arthroplasty. Cobalt-chromium-molybdenum (Co-Cr-Mo) alloys, due to their mechanical properties and excellent biocompatibility, qualify as a class of materials that meet the stringent functional requirements of these devices. To cost effectively assure the required dimensional and geometric tolerances, manufacturers rely on high-precision machining...
February 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28194065/adverse-events-during-apheresis-procedures-audit-at-a-tertiary-hospital
#6
Kanchan Dogra, Parag Fulzele, Diptiranjan Rout, Rahul Chaurasia, Poonam Coshic, Kabita Chatterjee
Apheretic platelets are better quality blood components which reduce donor exposure and chances of TTIs to transfusion recipients when compared to the whole blood derived components. Though safe, these apheretic donations are associated with donor adverse events. We evaluated the incidence of such adverse events associated with the modern apheresis procedures that would provide an insight as well as help formulating preventive steps to avoid frequent occurrences of such events. This prospective audit-based observational study was conducted over 1 year...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28190902/constraining-the-kinematics-of-metropolitan-los-angeles-faults-with-a-slip-partitioning-model
#7
S Daout, S Barbot, G Peltzer, M-P Doin, Z Liu, R Jolivet
Due to the limited resolution at depth of geodetic and other geophysical data, the geometry and the loading rate of the ramp-décollement faults below the metropolitan Los Angeles are poorly understood. Here we complement these data by assuming conservation of motion across the Big Bend of the San Andreas Fault. Using a Bayesian approach, we constrain the geometry of the ramp-décollement system from the Mojave block to Los Angeles and propose a partitioning of the convergence with 25.5 ± 0.5 mm/yr and 3...
November 16, 2016: Geophysical Research Letters
https://www.readbyqxmd.com/read/28181986/local-administration-of-thiamine-ameliorates-ongoing-pain-in-a-rat-model-of-second-degree-burn
#8
Kangkang Zhang, Yali Pei, Zhihao Gan, Xuetao Zhang, Ye Duan, Yuepeng Liu, Wei Liu
The objective of this study was to develop rat model of second-degree burn pain and test analgesic efficacy of local thiamine administration. Automatic temperature-controlled hot plate was set at 85 ± 0.1°C with a filter paper on the top. Rats were thrust on hot plate landing on plantar surface for 4 to 7 and 10 seconds, respectively. Burnt skin was observed. Hematoxylin and eosin staining and Masson staining were used to monitor burn degree. Gait analysis detected change of locomotion. Allodynia and hyperalgesia in the burnt area were evaluated with von Frey test and Hargreaves Test, and ongoing pain was detected with conditional place preference test...
February 7, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28181359/general-anesthesia-with-a-native-airway-for-patients-with-mucopolysaccharidosis-type-iii
#9
Mineto Kamata, Christopher McKee, Kristen V Truxal, Kevin M Flanigan, Kim L McBride, Shawn C Aylward, Joseph D Tobias, Marco Corridore
BACKGROUND: Mucopolysaccharidosis type III is a progressive disease with worsening airway, pulmonary, and cardiac involvement that may complicate anesthetic care. AIM: To prospectively evaluate the incidence of airway issues and complications during magnetic resonance imaging (MRI) and lumbar puncture (LP) during general anesthesia with a native airway for patients with mucopolysaccharidosis type III. METHOD: The study was a part of the natural history study...
February 8, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28163881/flow-pattern-similarities-in-the-near-wake-of-three-bird-species-suggest-a-common-role-for-unsteady-aerodynamic-effects-in-lift-generation
#10
Roi Gurka, Krishnamoorthy Krishnan, Hadar Ben-Gida, Adam J Kirchhefer, Gregory A Kopp, Christopher G Guglielmo
Analysis of the aerodynamics of flapping wings has yielded a general understanding of how birds generate lift and thrust during flight. However, the role of unsteady aerodynamics in avian flight due to the flapping motion still holds open questions in respect to performance and efficiency. We studied the flight of three distinctive bird species: western sandpiper (Calidris mauri), European starling (Sturnus vulgaris) and American robin (Turdus migratorius) using long-duration, time-resolved particle image velocimetry, to better characterize and advance our understanding of how birds use unsteady flow features to enhance their aerodynamic performances during flapping flight...
February 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28156439/are-patients-with-cancer-concerned-about-burdening-their-families
#11
Kelly Choi, Ruth Pe Benito, Victoria DeVincenzo, Emily Sassano, Brooke Gruman, Katherine DeMarco, Jose Contreras, Kathryn Tanenbaum, Jennifer Covington, Dhakshila Paramanathan, Stuart L Goldberg
: 86 Background: A diagnosis of advanced cancer frequently thrusts family members into the role of caregiver. Although caregiver burdens have been well documented, less is known about the level of concern borne by the patient (pt) with cancer in placing a family member in this role, known as self-perceived burden (SPB). METHODS: As part of the larger "Living with Cancer" project we prospectively surveyed 1307 pts with advanced malignancies receiving treatment with non-curative intent at 17 New Jersey cancer programs within the Regional Cancer Care Associates network between Sept 2015 and Apr 2016...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28151780/electromyographic-comparison-of-barbell-deadlift-hex-bar-deadlift-and-hip-thrust-exercises-a-cross-over-study
#12
Vidar Andersen, Marius Steiro Fimland, Dag-Andrè Mo, Vegard Moe Iversen, Torbjørn Vederhus, Lars Richard Rockland Hellebø, Kristina Isabel Nordaune, Atle Hole Saeterbakken
The aim of the study was to compare the muscle activation level of the gluteus maximus, biceps femoris and erector spinae in the hip thrust, barbell deadlift and hex bar deadlift; each of which are compound resisted hip-extension exercises. After two familiarization sessions, 13 resistance-trained men performed a 1-RM in all three exercises in one session, in randomized and counterbalanced order. The whole ascending movement (concentric phase), as well as its lower and upper part (whole movement divided in two), were analyzed...
January 30, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28140363/hybrid-parameter-identification-of-a-multi-modal-underwater-soft-robot
#13
Francesco Giorgio-Serchi, Andrea Arienti, Francesco Corucci, Michele Giorelli, Cecilia Laschi
We introduce an octopus-inspired, underwater, soft-bodied robot capable of performing waterborne pulsed-jet propulsion and benthic legged-locomotion. This vehicle consists for as much as 80\% of its volume of rubber-like materials so that structural flexibility is exploited as a key element during both modes of locomotion. The high bodily softness, the unconventional morphology and the non-stationary nature of its propulsion mechanisms require dynamic characterization of this robot to be dealt with by \textit{ad-hoc} techniques...
January 31, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28139207/disturbance-observer-based-hierarchical-control-of-coaxial-rotor-uav
#14
M Rida Mokhtari, Brahim Cherki, Amal Choukchou Braham
This paper propose an hierarchical controller based on a new disturbance observer with finite time convergence (FTDO) to solve the path tracking of a small coaxial-rotor-typs Unmanned Aerial Vehicles (UAVs) despite of unknown aerodynamic efforts. The hierarchical control technique is used to separate the flight control problem into an inner loop that controls attitude and an outer loop that controls the thrust force acting on the vehicle. The new disturbance observer with finite time convergence is intergated to online estimate the unknown uncertainties and disturbances and to actively compensate them in finite time...
January 27, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28138539/helical-and-rod-shaped-bacteria-swim-in-helical-trajectories-with-little-additional-propulsion-from-helical-shape
#15
Maira A Constantino, Mehdi Jabbarzadeh, Henry C Fu, Rama Bansil
It has frequently been hypothesized that the helical body shapes of flagellated bacteria may yield some advantage in swimming ability. In particular, the helical-shaped pathogen Helicobacter pylori is often claimed to swim like a corkscrew through its harsh gastric habitat, but there has been no direct confirmation or quantification of such claims. Using fast time-resolution and high-magnification two-dimensional (2D) phase-contrast microscopy to simultaneously image and track individual bacteria in bacterial broth as well as mucin solutions, we show that both helical and rod-shaped H...
November 2016: Science Advances
https://www.readbyqxmd.com/read/28117769/a-robotic-platform-to-study-the-foreflipper-of-the-california-sea-lion
#16
Aditya A Kulkarni, Rahi K Patel, Chen Friedman, Megan C Leftwich
The California sea lion (Zalophus californianus), is an agile and powerful swimmer. Unlike many successful swimmers (dolphins, tuna), they generate most of their thrust with their large foreflippers. This protocol describes a robotic platform designed to study the hydrodynamic performance of the swimming California sea lion (Zalophus californianus). The robot is a model of the animal's foreflipper that is actuated by motors to replicate the motion of its propulsive stroke (the 'clap'). The kinematics of the sea lion's propulsive stroke are extracted from video data of unmarked, non-research sea lions at the Smithsonian Zoological Park (SNZ)...
January 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28117351/differential-growth-of-the-northern-tibetan-margin-evidence-for-oblique-stepwise-rise-of-the-tibetan-plateau
#17
Fei Wang, Wenbei Shi, Weibin Zhang, Lin Wu, Liekun Yang, Yinzhi Wang, Rixiang Zhu
Models of how high elevations formed across Tibet predict: (a) the continuous thickening of a "viscous sheet"; (b) time-dependent, oblique stepwise growth; and (c) synchronous deformation across Tibet that accompanied collision. Our new observations may shed light on this issue. Here, we use (40)Ar/(39)Ar and (U-Th)/He thermochronology from massifs in the hanging walls of thrust structures along the Kunlun Belt, the first-order orogenic range at the northern Tibetan margin, to elucidate the exhumation history...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105510/diversity-and-distribution-of-thermophilic-bacteria-in-hot-springs-of-pakistan
#18
Arshia Amin, Iftikhar Ahmed, Nimaichand Salam, Byung-Yong Kim, Dharmesh Singh, Xiao-Yang Zhi, Min Xiao, Wen-Jun Li
Chilas and Hunza areas, located in the Main Mantle Thrust and Main Karakoram Thrust of the Himalayas, host a range of geochemically diverse hot springs. This Himalayan geothermal region encompassed hot springs ranging in temperature from 60 to 95 °C, in pH from 6.2 to 9.4, and in mineralogy from bicarbonates (Tato Field), sulfates (Tatta Pani) to mixed type (Murtazaabad). Microbial community structures in these geothermal springs remained largely unexplored to date. In this study, we report a comprehensive, culture-independent survey of microbial communities in nine samples from these geothermal fields by employing a bar-coded pyrosequencing technique...
January 19, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28104540/varus-thrust-during-walking-and-the-risk-of-incident-and-worsening-medial-tibiofemoral-mri-lesions-the-multicenter-osteoarthritis-study
#19
A E Wink, K D Gross, C A Brown, A Guermazi, F Roemer, J Niu, J Torner, C E Lewis, M C Nevitt, I Tolstykh, L Sharma, D T Felson
OBJECTIVE: To determine the association of varus thrust during walking to incident and worsening medial tibiofemoral cartilage damage and bone marrow lesions (BMLs) over 2 years in older adults with or at risk for osteoarthritis (OA). METHOD: Subjects from the Multicenter Osteoarthritis Study (MOST) were studied. Varus thrust was visually assessed from high-speed videos of forward walking trials. Baseline and two-year MRIs were acquired from one knee per subject and read for cartilage loss and BMLs...
January 16, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28094239/performance-variation-due-to-stiffness-in-a-tuna-inspired-flexible-foil-model
#20
Mariel-Luisa N Rosic, Patrick J M Thornycroft, Kara L Feilich, Kelsey N Lucas, George V Lauder
Tuna are fast, economical swimmers in part due to their stiff, high aspect ratio caudal fins and streamlined bodies. Previous studies using passive caudal fin models have suggested that while high aspect ratio tail shapes such as a tuna's generally perform well, tail performance cannot be determined from shape alone. In this study, we analyzed the swimming performance of tuna-tail-shaped hydrofoils of a wide range of stiffnesses, heave amplitudes, and frequencies to determine how stiffness and kinematics affect multiple swimming performance parameters for a single foil shape...
January 17, 2017: Bioinspiration & Biomimetics
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