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https://www.readbyqxmd.com/read/28549092/the-effect-of-spectacle-lenses-containing-peripheral-defocus-on-refractive-error-and-horizontal-eye-shape-in-the-guinea-pig
#1
Hannah E Bowrey, Guang Zeng, Dennis Y Tse, Amelia J Leotta, Yi Wu, Chi-Ho To, Christine F Wildsoet, Sally A McFadden
Purpose: It has been proposed that the peripheral retina, responding to local optical defocus, contributes to myopia and associated altered eye growth in humans. To test this hypothesis, we measured the changes in central (on-axis) and peripheral ocular dimensions in guinea pigs wearing a concentric bifocal spectacle lens design with power restricted to the periphery. Methods: Five groups of guinea pigs (n = 83) wore either a unifocal (UF) spectacle lens (-4, 0, or +4 Diopters [D]), or a peripheral defocus (PF) spectacle lens that had a plano center (diameter of 5 mm) with either -4 or +4 D in the surround (-4/0 or +4/0 D)...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28546303/intraocular-minocycline-for-the-treatment-of-ocular-pythiosis
#2
Fátima Ros Castellar, Carmen Sobrino Jiménez, Almudena Del Hierro Zarzuelo, Alicia Herrero Ambrosio, Ana Boto de Los Bueis
PURPOSE: A case of ocular pythiosis successfully treated with surgery and intraocular and oral minocycline is reported. SUMMARY: A 30-year-old man who wore corrective contact lenses traveled to Brazil and Colombia where he swam in salt and fresh waters while wearing contact lenses. He sought treatment at an emergency department after 2 weeks of suffering with a painful corneal ulcer, redness, and loss of vision in his right eye that had been treated at other centers with ophthalmic moxifloxacin for 10 days and with fortified topical antibiotics (amikacin and vancomycin) for 2 days...
June 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28546137/activity-recognition-for-persons-with-stroke-using-mobile-phone-technology-toward-improved-performance-in-a-home-setting
#3
Megan K O'Brien, Nicholas Shawen, Chaithanya K Mummidisetty, Saninder Kaur, Xiao Bo, Christian Poellabauer, Konrad Kording, Arun Jayaraman
BACKGROUND: Smartphones contain sensors that measure movement-related data, making them promising tools for monitoring physical activity after a stroke. Activity recognition (AR) systems are typically trained on movement data from healthy individuals collected in a laboratory setting. However, movement patterns change after a stroke (eg, gait impairment), and activities may be performed differently at home than in a lab. Thus, it is important to validate AR for gait-impaired stroke patients in a home setting for accurate clinical predictions...
May 25, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28545618/nosology-of-noncompaction-cardiomyopathy-the-emperor-still-wears-clothes
#4
EDITORIAL
Erwin Oechslin, Rolf Jenni
No abstract text is available yet for this article.
June 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28545174/causes-and-clinical-outcomes-of-revision-total-knee-arthroplasty
#5
Dong-Hyun Lee, Seung-Hun Lee, Eun-Kyoo Song, Jong-Keun Seon, Hong-An Lim, Hong-Yeol Yang
Purpose: The purpose of this study was to evaluate causes and clinical outcomes of revision total knee arthroplasty (TKA) with a minimum 2-year follow-up. Materials and Methods: We performed a retrospective review on the records of 225 revision TKAs performed from 2003 to 2012 at a single institution. Finally, 206 cases were conducted. To evaluate clinical outcomes, we checked the range of motion (ROM), Knee Society (KS) score, Hospital for Special Surgery (HSS) score, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score preoperatively, 6 months postoperatively and yearly thereafter and complications after revision TKA...
June 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28544804/longitudinal-patterns-in-objective-physical-activity-and-sedentary-time-in-a-multi-ethnic-sample-of-children-from-the-uk
#6
L Smith, D Aggio, M Hamer
BACKGROUND: Children of South Asian decent born in the UK display lower levels of physical activity than British Caucasians although no longitudinal data are available. OBJECTIVES: We aimed to investigate change in activity levels over 1 year in a diverse ethnic sample of children residing in London, UK. METHODS: Children were categorized into ethnic groups (Caucasian/mixed, Black, South Asian). At baseline and 1-year follow-up, children's objective physical activity was monitored (Actigraph accelerometer) for at least 1 day...
May 22, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28544592/direct-influence-of-titanium-and-zirconia-particles-on-the-morphology-and-functionality-of-mature-human-osteoclasts
#7
Juliane Pasold, Jana Markhoff, Jenny Tillmann, Martin Krogull, Phillip Pisowocki, Rainer Bader
Within the last ten years of biomedical implants, the focus is increasingly on bioceramics, specifically on zirconia (ZrO2 ). Hence, we analyzed the impact of zirconia particles in comparison to titanium (cpTi) particles on mature human osteoclasts (OCs) as little is known about the direct effect of wear particles on mature OCs and their role in the osteolytic process during aseptic endoprosthesis loosening. Changes in cell morphology and functionality of OCs incubated with particles in different concentrations were investigated...
May 22, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28544454/flexible-nanowire-cluster-as-a-wearable-colorimetric-humidity-sensor
#8
Zhiqiang Wei, Zhang-Kai Zhou, Qiuyu Li, Jiancai Xue, Andrea Di Falco, Zhongjian Yang, Jianhua Zhou, Xuehua Wang
Wearable plasmonic devices combine the advantages of high flexibility, ultrathinness, light weight, and excellent integration with the optical benefits mediated by plasmon-enhanced electric fields. However, two obstacles severely hinder further developments and applications of a wearable plasmonic device. One is the lack of efficient approach to obtaining devices with robust antimotion-interference property, i.e., the devices can work independently on the morphology changes of their working structures caused by arbitrary wearing conditions...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28542710/behavioral-inferences-from-the-high-levels-of-dental-chipping-in-homo-naledi
#9
Ian Towle, Joel D Irish, Isabelle De Groote
OBJECTIVES: A variety of mechanical processes can result in antemortem dental chipping. In this study, chipping data in the teeth of Homo naledi are compared with those of other pertinent dental samples to give insight into their etiology. MATERIALS AND METHODS: Permanent teeth with complete crowns evidencing occlusal wear were examined macroscopically. The location, number, and severity of fractures were recorded and compared to those found in samples of two other South African fossil hominin species and in samples of nonhuman primates (n = 3) and recent humans (n = 7)...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28541139/factory-calibrated-continuous-glucose-sensors-the-science-behind-the-technology
#10
Udo Hoss, Erwin Satrya Budiman
The use of commercially available continuous glucose monitors for diabetes management requires sensor calibrations, which until recently are exclusively performed by the patient. A new development is the implementation of factory calibration for subcutaneous glucose sensors, which eliminates the need for user calibrations and the associated blood glucose tests. Factory calibration means that the calibration process is part of the sensor manufacturing process and performed under controlled laboratory conditions...
May 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28541124/improved-tribological-properties-electrochemical-resistance-and-biocompatibility-of-aisi-316l-stainless-steel-through-duplex-plasma-nitriding-and-tin-coating-treatment
#11
Wen-Hsien Kao, Yean-Liang Su, Jeng-Haur Horng, Yun-Ting Hsieh
AISI 316L specimens were nitrided using a low temperature (390℃) plasma nitriding process and then coated with a thin layer of titanium nitride by closed field unbalanced magnetron sputtering. The microstructure, adhesion properties and hardness of the duplex-treated samples were examined using X-ray diffraction, scratch testing and nanoindentation, respectively. In addition, the tribological properties were investigated by means of reciprocating wear tests performed against 316L, Si3N4 and Ti6Al4V balls under a load of 10 N for 24 min in 0...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28540803/thermophysiological-response-of-newton-manikin-equipped-with-power-assisted-filtering-device-incorporating-a-full-face-mask-in-hot-environment
#12
Simona Del Ferraro, Francesca Tombolini, Carmela Plebani, Vincenzo Molinaro
One of the most common reasons inducing discomfort in wearing a respirator is an unpleasant local thermal perception. In this study, the effect of a power-assisted filtering device incorporating a full-face mask on the thermophysiological response was investigated by performing tests on a Newton manikin in a climatic chamber, where hot conditions were simulated setting the ambient temperature at 34 °C and the relative humidity at 32%. Two different levels of metabolic rate (1 MET and 3 MET) were considered...
April 24, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28540801/umbilical-temperature-correlation-with-core-and-skin-temperatures-at-rest-in-the-heat-and-during-physical-activity
#13
Raymond J Roberge, Jung-Hyun Kim, Patrick Yorio, Aitor Coca, Yongsuk Seo, Tyler Quinn, Ali Aljaroudi, Jeffrey B Powell
PURPOSE: to determine the correlation of umbilical temperatures (Tumb) with simultaneously recorded chest wall temperature (Tchest) and rectal temperature (Trectal) in adults during rest, heat exposure and exercise. METHODS: A total of 28 healthy men, wearing different types of clothing (athletic garb, a spandex full body heating garment, firefighter bunker gear) had average and peak umbilical, chest wall and rectal temperature measurements taken during sedentary temperature stabilisation stages, heat exposure periods and active exercise phases...
April 19, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28540402/a-qualitative-evaluation-of-breast-cancer-survivors-acceptance-of-and-preferences-for-consumer-wearable-technology-activity-trackers
#14
Nga H Nguyen, Nyssa T Hadgraft, Melissa M Moore, Dori E Rosenberg, Chris Lynch, Marina M Reeves, Brigid M Lynch
BACKGROUND: Physical inactivity and sedentary behaviour are common amongst breast cancer survivors. These behaviours are associated with an increased risk of comorbidities such as heart disease, diabetes and other cancers. Commercially available, wearable activity trackers (WATs) have potential utility as behavioural interventions to increase physical activity and reduce sedentary behaviour within this population. PURPOSE: The purpose of the study is to explore the acceptability and usability of consumer WAT amongst postmenopausal breast cancer survivors...
May 24, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28540370/ultralow-friction-of-ink-jet-printed-graphene-flakes
#15
R Buzio, A Gerbi, S Uttiya, C Bernini, A E Del Rio Castillo, F Palazon, A S Siri, V Pellegrini, L Pellegrino, F Bonaccorso
We report the frictional response of few-layer graphene (FLG) flakes obtained by the liquid phase exfoliation (LPE) of pristine graphite. To this end, we inkjet print FLG on bare and hexamethyldisilazane-terminated SiO2 substrates, producing micrometric patterns with nanoscopic roughness that are investigated by atomic force microscopy. Normal force spectroscopy and atomically-resolved morphologies indicate reduced surface contamination by solvents after a vacuum annealing process. Notably, the printed FLG flakes show ultralow friction comparable to that of micromechanically exfoliated graphene flakes...
May 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28540109/whistle-abrasion-a-case-report
#16
T Pereira, S Shetty, M Chande, P Kamath
Abrasion is the physical wearing of a tooth surface which can involve the presence of a foreign object repeatedly being in contact with the tooth. A 40-year-old male patient reported to our dental clinic with a 2-3 mm uneven gap between his upper and lower front teeth on occlusion. A detailed history revealed that he was a physical education teacher, and the habitual placement of the whistle for the last 15 years caused an indentation on the whistle which coincided with the abraded teeth. Conditions such as abrasion may need active restorations...
November 2016: Annals of Medical and Health Sciences Research
https://www.readbyqxmd.com/read/28540005/post-photorefractive-keratectomy-pain-and-corneal-sub-basal-nerve-density
#17
Masoumeh Mohebbi, Amin Rafat-Nejad, Seyed-Farzad Mohammadi, Kosar Asna-Ashari, Maryam Kasiri, Saeed Heidari-Keshel, Farshad Askarizadeh
PURPOSE: The perceived and reported pain of patients receiving photorefractive keratectomy (PRK) widely varies. We assessed the potential role of the subbasal nerve plexus density as a predictor of postoperative pain level. Consecutive patients scheduled to undergo PRK at the Refractive Surgery Clinic of Farabi Eye Hospital, Tehran, were approached. METHODS: Forty-nine myopic left eyes from 49 patients who consented to undergo scanning slit confocal microscopy assessments preoperatively were included...
April 2017: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/28539876/plantar-sole-unweighting-alters-the-sensory-transmission-to-the-cortical-areas
#18
Laurence Mouchnino, Olivia Lhomond, Clément Morant, Pascale Chavet
It is well established that somatosensory inputs to the cortex undergo an early and a later stage of processing. The later has been shown to be enhanced when the earlier transmission decreased. In this framework, mechanical factors such as the mechanical stress to which sensors are subjected when wearing a loaded vest are associated with a decrease in sensory transmission. This decrease is in turn associated with an increase in the late sensory processes originating from cortical areas. We hypothesized that unweighting the plantar sole should lead to a facilitation of the sensory transmission...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28539695/physical-activity-levels-of-physiotherapists-across-practice-settings-a-cross-sectional-comparison-using-self-report-questionnaire-and-accelerometer-measures
#19
Sarah E Neil-Sztramko, Armin Ghayyur, Jeremy Edwards, Kristin L Campbell
Purpose: This article describes the physical activity of physiotherapists in British Columbia and examines differences across practice settings using self-report questionnaire and accelerometer-derived measures. Methods: Public and private practice physiotherapists aged 18-65 years were recruited through employee email lists and word of mouth to this cross-sectional study. Participants (n=98) completed the International Physical Activity Questionnaire-Long Form (IPAQ-L) online to quantify self-reported physical activity across various domains (occupational, leisure time, domestic, and transportation)...
2017: Physiotherapy Canada. Physiothérapie Canada
https://www.readbyqxmd.com/read/28539605/coupling-mechanism-between-wear-and-oxidation-processes-of-304-stainless-steel-in-hydrogen-peroxide-environments
#20
Conglin Dong, Chengqing Yuan, Xiuqin Bai, Jian Li, Honglin Qin, Xinping Yan
Stainless steel is widely used in strongly oxidizing hydrogen peroxide (H2O2) environments. It is crucial to study its wear behaviour and failure mode. The tribological properties and oxidation of 304 stainless steel were investigated using a MMW-1 tribo-tester with a three-electrode setup in H2O2 solutions with different concentrations. Corrosion current densities (CCDs), coefficients of frictions (COFs), wear mass losses, wear surface topographies, and metal oxide films were analysed and compared. The results show that the wear process and oxidation process interacted significantly with each other...
May 24, 2017: Scientific Reports
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