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https://www.readbyqxmd.com/read/27890142/the-effects-of-a-simple-intervention-on-exposures-to-low-back-pain-risk-factors-during-traditional-posterior-load-carriage
#1
Khoirul Muslim, Maury A Nussbaum
Traditional posterior load carriage (PLC), typically performed without the use of an assistive device, is associated with a high prevalence of low back pain (LBP). However, there are few studies that have evaluated potential interventions to reduce exposures to LBP risk factors. This work examined the effects of a simple, potentially low-cost intervention using an assistive device (i.e., carrying aid) on exposures to factors related to LBP risk during PLC. Torso kinematics and kinetics, slip risk, and ratings of perceived discomfort (RPD) were obtained during simulated PLC on a walkway...
March 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/27872315/large-numbers-of-vertebrates-began-rapid-population-decline-in-the-late-19th-century
#2
Haipeng Li, Jinggong Xiang-Yu, Guangyi Dai, Zhili Gu, Chen Ming, Zongfeng Yang, Oliver A Ryder, Wen-Hsiung Li, Yun-Xin Fu, Ya-Ping Zhang
Accelerated losses of biodiversity are a hallmark of the current era. Large declines of population size have been widely observed and currently 22,176 species are threatened by extinction. The time at which a threatened species began rapid population decline (RPD) and the rate of RPD provide important clues about the driving forces of population decline and anticipated extinction time. However, these parameters remain unknown for the vast majority of threatened species. Here we analyzed the genetic diversity data of nuclear and mitochondrial loci of 2,764 vertebrate species and found that the mean genetic diversity is lower in threatened species than in related nonthreatened species...
November 21, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27861664/comparison-of-treatment-outcomes-in-partially-edentulous-patients-with-implant-supported-fixed-prostheses-and-removable-partial-dentures
#3
Toshifumi Nogawa, Yoshiyuki Takayama, Keita Ishida, Atsuro Yokoyama
PURPOSE: The aim of this study was to compare masticatory performance, occlusal force, and oral health-related quality of life (OHRQoL) in patients with mandibular distal-extension edentulism between those with implant-supported fixed prostheses (ISFPs) and those with removable partial dentures (RPDs), and to evaluate relationships among them. MATERIALS AND METHODS: Subjects were recruited from patients using ISFPs or RPDs for mandibular distal-extension edentulism...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27856030/comparison-between-widefield-en-face-swept-source-oct-and-conventional-multimodal-imaging-for-the-detection-of-reticular-pseudodrusen
#4
Karen B Schaal, Andrew D Legarreta, William J Feuer, Giovanni Gregori, Qianqian Cheng, John E Legarreta, Mary K Durbin, Paul F Stetson, Sophie Kubach, Philip J Rosenfeld
PURPOSE: The ability to detect reticular pseudodrusen (RPD)/subretinal drusenoid deposits (SDDs) using 12×12-mm widefield en face swept-source optical coherence tomography (SS-OCT) imaging was compared with conventional multimodal imaging (color, fundus autofluorescence (FAF), and infrared reflectance [IR] imaging) in eyes with nonexudative age-related macular degeneration (AMD). DESIGN: Cross-sectional study. PARTICIPANTS: Patients with nonexudative AMD were prospectively enrolled in an SS-OCT imaging study at the Bascom Palmer Eye Institute...
November 14, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27854280/wastewater-biosolid-composting-optimization-based-on-uv-vnir-spectroscopy-monitoring
#5
Beatriz Temporal-Lara, Ignacio Melendez-Pastor, Ignacio Gómez, Jose Navarro-Pedreño
Conventional wastewater treatment generates large amounts of organic matter-rich sludge that requires adequate treatment to avoid public health and environmental problems. The mixture of wastewater sludge and some bulking agents produces a biosolid to be composted at adequate composting facilities. The composting process is chemically and microbiologically complex and requires an adequate aeration of the biosolid (e.g., with a turner machine) for proper maturation of the compost. Adequate (near) real-time monitoring of the compost maturity process is highly difficult and the operation of composting facilities is not as automatized as other industrial processes...
November 15, 2016: Sensors
https://www.readbyqxmd.com/read/27849640/rapidly-progressive-dementia-prevalence-and-causes-in-a-neurologic-unit-of-a-tertiary-hospital-in-brazil
#6
Adalberto Studart Neto, Herval R Soares Neto, Mateus M Simabukuro, Davi J F Solla, Márcia R R Gonçalves, Ida Fortini, Luiz H M Castro, Ricardo Nitrini
BACKGROUND: Rapidly progressive dementia (RPD) is usually associated with Creutzfeldt-Jakob disease, a fatal condition. Current advances in the understanding of immune-mediated diseases allow the diagnosis of previously unrecognized treatable RPDs. OBJECTIVE OF THE STUDY: The objective of the study was to describe the prevalence and causes of RPD in a neurology service, identifying potentially reversible causes. METHODS: We carried out a cross-sectional evaluation of all patients admitted to the neurology unit of a tertiary hospital in Brazil between March 2012 and February 2015...
November 15, 2016: Alzheimer Disease and Associated Disorders
https://www.readbyqxmd.com/read/27849311/choroidal-thickness-and-choroidal-vessel-density-in-nonexudative-age-related-macular-degeneration-using-swept-source-optical-coherence-tomography-imaging
#7
Fang Zheng, Giovanni Gregori, Karen B Schaal, Andrew D Legarreta, Andrew R Miller, Luiz Roisman, William J Feuer, Philip J Rosenfeld
Purpose: To analyze the relationship between choroidal thickness and the distribution of choroidal blood vessels in eyes with nonexudative AMD. Methods: Eyes with a diagnosis of nonexudative AMD were imaged using a prototype 100-kHz swept-source (SS) optical coherence tomography (OCT) instrument (Carl Zeiss Meditec, Dublin, CA, USA) with a central wavelength of 1050 nm. We used an OCT cube scan pattern consisting of 512 × 512 A-scans over a 12 × 12 mm retinal area...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27825678/microbiological-and-clinical-assessment-of-the-abutment-and-non-abutment-teeth-of-partial-removable-denture-wearers
#8
Luciana Costa, Cássio do Nascimento, Valéria Oliveira Pagnano de Souza, Vinícius Pedrazzi
OBJECTIVE: The aim of this study was assessing the changes in both clinical and microbiological parameters of healthy individuals after rehabilitation with removable partial denture (RPD). DESIGN: 11 women received unilateral or bilateral free-end saddle RPD in the mandibular arch. Clinical and microbiological parameters of abutment, non-abutment, and antagonist teeth were assessed at baseline (RPD installation) and after 7, 30, 90, and 180days of function. The Checkerboard DNA-DNA hybridization technique was used to identify and quantify up to 43 different microbial species from subgingival biofilm samples...
November 3, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27825561/clasp-fabrication-using-one-process-molding-by-repeated-laser-sintering-and-high-speed-milling
#9
Toyoki Nakata, Hidemasa Shimpo, Chikahiro Ohkubo
PURPOSE: A single machine platform that integrates repeated laser sintering and high-speed milling for one-process molding has been developed. METHODS: The Akers clasp was designed using the CAD system (DWOS Partial Frameworks, Dental Wings) and fabricated using repeated laser sintering and a high-speed milling machine (LUMEX Advance-25, Matsuura) with 50-μm Co-Cr particles (CAM clasp). As controls, cast clasps of the same forms were also prepared using conventional casting methods with a Co-Cr alloy and CP titanium Grade 3...
November 4, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27814254/implant-assisted-removable-partial-dentures-practical-considerations
#10
Aaron J Omura, Vaibhav Latthe, Mark M Marin, David R Cagna
At the heart of prosthodontic treatment planning must be a sound understanding of the quality and reliability of the prosthodontic foundation. Implant prosthodontics relies almost entirely on the biological and mechanical properties of an osseous foundation. Initiation of therapy in the absence of a healthy and stable prosthodontic foundation risks unintended and suboptimal treatment outcomes. For conventional removable partial denture (RPD) therapy, consideration must be given to interactions between the soft and hard tissues available to support and stabilize planned prostheses...
November 2016: General Dentistry
https://www.readbyqxmd.com/read/27806604/breast-parenchymal-patterns-in-processed-versus-raw-digital-mammograms-a-large-population-study-toward-assessing-differences-in-quantitative-measures-across-image-representations
#11
Aimilia Gastounioti, Andrew Oustimov, Brad M Keller, Lauren Pantalone, Meng-Kang Hsieh, Emily F Conant, Despina Kontos
PURPOSE: With raw digital mammograms (DMs), which retain the relationship with x-ray attenuation of the breast tissue, not being routinely available, processed DMs are often the only viable means to acquire imaging measures. The authors investigate differences in quantitative measures of breast density and parenchymal texture, shown to have value in breast cancer risk assessment, between the two DM representations. METHODS: The authors report data from 8458 pairs of bilateral raw ("FOR PROCESSING") and processed ("FOR PRESENTATION") DMs acquired from 4278 women undergoing routine screening evaluation, collected with DM units from two different vendors...
November 2016: Medical Physics
https://www.readbyqxmd.com/read/27794427/choriocapillaris-non-perfusion-is-associated-with-poor-visual-acuity-in-eyes-with-reticular-pseudodrusen
#12
Peter L Nesper, Brian T Soetikno, Amani A Fawzi
PURPOSE: To study choriocapillaris blood flow in age-related macular degeneration (AMD) using optical coherence tomography angiography (OCTA) and study its correlation to vision (VA) in eyes with reticular pseudodrusen (RPD) versus those with drusen without RPD (drusen). DESIGN: Cross-sectional study METHODS: Patients with either drusen or RPD in early AMD underwent OCTA imaging of the superior, inferior, and/or nasal macula. We quantified "percent choriocapillaris area of non-perfusion" (PCAN) in eyes with RPD versus those with drusen...
October 26, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27780877/a-mathematical-model-for-assessing-the-effectiveness-of-protective-devices-in-reducing-risk-of-infection-by-inhalable-droplets
#13
Matthew R Myers, Prasanna Hariharan, Suvajyoti Guha, Jing Yan
Respiratory protective devices (RPDs) are critical for reducing the spread of infection via inhalable droplets. In determining the type of RPD to deploy, it is important to know the reduction in the infection rate that the RPD enables for the given pathogen and population. This paper extends a previously developed susceptible-infected-recovered (SIR) epidemic model to analyse the effect of a protection strategy. An approximate solution to the modified SIR equations, which compares well with a full numerical solution to the equations, was used to derive a simple threshold equation for predicting when growth of the infected population will occur for a given protection strategy...
October 25, 2016: Mathematical Medicine and Biology: a Journal of the IMA
https://www.readbyqxmd.com/read/27769657/implant-supported-mandibular-removable-partial-dentures-patient-based-outcome-measures-in-relation-to-implant-position
#14
Charlotte Jensen, Gerry M Raghoebar, Wouter Kerdijk, Henny J A Meijer, Marco S Cune
OBJECTIVES: To assess the benefits of implant support to Removable Partial Dentures (RPD) in patients with a bilateral free-ending situation in the mandible and to determine the most favorable implant position: the premolar (PM) or the molar (M) region. METHODS: Thirty subjects with a bilateral unbounded posterior saddle received 2 PM and 2M implants. A new RPD was placed. Implant support was provided 3 months later. Two PM implants supported the RPD. After 3 months the 2M implants were used or vice versa...
October 18, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27768796/epidemiology-of-reticular-pseudodrusen-in-age-related-macular-degeneration-the-rotterdam-study
#15
Gabriëlle H S Buitendijk, Ada J Hooghart, Corina Brussee, Paulus T V M de Jong, Albert Hofman, Johannes R Vingerling, Caroline C W Klaver
Purpose: Reticular pseudodrusen (RPD) are considered to be a distinct feature in AMD. Population studies have studied the epidemiology of RPD using standard color fundus photographs (CFP). However, recent studies have shown that RPD are better imaged using near-infrared (NIR) imaging. We studied the epidemiology of RPD in a large population-based study using NIR and CFP. Methods: Participants aged 65+ years from the Rotterdam Study underwent ophthalmologic examination including NIR and CFP...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27768118/clinical-features-and-long-term-progression-of-reticular-pseudodrusen-in-age-related-macular-degeneration-findings-from-a-multicenter-cohort
#16
J Q Gil, J P Marques, R Hogg, C Rosina, M L Cachulo, A Santos, G Staurenghi, U Chakravarthy, R Silva
PurposeTo determine whether reticular pseudodrusen (RPD) confer a long-term increased risk of progression to late age-related macular degeneration (AMD) in the fellow eye of patients with unilateral wet-AMD.Patients and methodsThis was a multicenter, combined prospective and retrospective, longitudinal, observational, study. Patients with wet-AMD in one eye were recruited from two centers and evaluated on the risk of progression to late-AMD in the second eye (study eye). A minimum follow-up of 5 years was required, unless progression occurred first...
October 21, 2016: Eye
https://www.readbyqxmd.com/read/27756079/assessment-of-retinotopic-rod-photoreceptor-function-using-a-dark-adapted-chromatic-perimeter-in-intermediate-age-related-macular-degeneration
#17
Rogan G Fraser, Rose Tan, Lauren N Ayton, Emily Caruso, Robyn H Guymer, Chi D Luu
Purpose: We determine the feasibility of using a dark-adapted chromatic (DAC) perimeter to obtain dark-adapted static and dynamic rod function at multiple retinal locations, and compare these functional parameters between subjects with intermediate age-related macular degeneration (AMD) and normal controls. Methods: Perimetric dark-adapted retinal sensitivities for the 505 and 620 nm stimuli across 7 retinal locations within the central 12° were repeatedly measured after exposing to a single photobleach in 22 intermediate AMD subjects and 8 controls...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27745558/higher-membrane-fluidity-mediates-the-increased-subcutaneous-fatty-acid-content-in-pigs-fed-reduced-protein-diets
#18
P A Lopes, A P Martins, S V Martins, M S Madeira, N C Santos, T F Moura, J A M Prates, G Soveral
The production of pork with moderate amounts of intramuscular fat (IMF) without an increase in subcutaneous fat is highly desirable for the meat industry. Several studies indicate that dietary protein reduction during the growing-finishing period of pigs enhances IMF content, but its consequence on carcass fat deposition is still contradictory. In this study, we hypothesized that the effects of reduced protein diets (RPD), corrected or not with the limiting amino acid lysine, on subcutaneous fat deposition from pigs with distinct genotypes are mediated by adipose membranes biophysical properties...
October 17, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27719947/determination-of-trace-thiophanate-methyl-and-its-metabolite-carbendazim-with-teratogenic-risk-in-red-bell-pepper-capsicumannuum-l-by-surface-enhanced-raman-imaging-technique
#19
Jiang-Lin Li, Da-Wen Sun, Hongbin Pu, Digvir S Jayas
Surface-enhanced Raman scattering (SERS) imaging coupling with multivariate analysis in spectral region of 200 to 1800cm(-1) was developed to quantify and visualize thiophanate-methyl (TM) and its metabolite carbendazim residues in red bell pepper (Capsicum annuum L.). Least squares support vector machines (LS-SVM) and support vector machines (SVM) models based on seven optimized characteristic peaks that showed SERS effects of TM and its metabolite carbendazim residues were employed to establish prediction models...
March 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27681164/influence-of-time-and-different-tooth-widths-on-masticatory-efficiency-and-muscular-activity-in-bilateral-free-end-saddles
#20
Mohammed Assayed Mousa, Edward Lynch, Mohd G Sghaireen, Abdalwhab M A Zwiri, Osama A Baraka
PURPOSE: To evaluate the influence of time on masticatory efficiency and muscular activity during mastication of different types of test foods in participants fitted with a lower bilateral free-end saddle removable partial denture (RPD) with wide or narrow teeth. METHODS: Thirty-six participants consented to undergo evaluation of their masticatory efficiency and recording of their muscular activity, while they wore an RPD with a unified bilateral design, during mastication of different types of test foods...
September 29, 2016: International Dental Journal
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