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https://www.readbyqxmd.com/read/28057649/choroid-morphometric-analysis-in-non-neovascular-age-related-macular-degeneration-by-means-of-optical-coherence-tomography-angiography
#1
Maria Vittoria Cicinelli, Alessandro Rabiolo, Alessandro Marchese, Luigi de Vitis, Adriano Carnevali, Lea Querques, Francesco Bandello, Giuseppe Querques
AIMS: To describe the vascular changes in patients affected by non-neovascular age-related macular degeneration (AMD), featuring reticular pseudodrusen (RPD), drusen, or both RPD and drusen by means of optical coherence tomography angiography (OCT-A). METHODS: Cross-sectional observational case series. Patients with non-neovascular AMD presenting at the Medical Retina Service of the Department of Ophthalmology, University Vita-Salute San Raffaele in Milan were recruited...
January 5, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28057471/partial-least-squares-regression-and-fourier-transform-infrared-ftir-microspectroscopy-for-prediction-of-resistance-in-hepatocellular-carcinoma-hepg2-cells
#2
Cholpajsorn Junhom, Natthida Weerapreeyakul, Waraporn Tanthanuch, Kanjana Thumanu
We evaluated the feasibility of FTIR microspectroscopy combined with partial least squares regression (PLS-R) for determination of resistance in HepG2 cells. Cell viability testing was performed using neutral red assay for the concentration of cisplatin resulting in 50% antiproliferation (IC50). The resistance index (RI) is the ratio of the IC50 in resistant HepG2 cells vs. parental HepG2 cells. Principal component and unsupervised hierarchical cluster analyses were applied and a differentiation of samples of cells (parental, 1...
January 3, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28046290/su-f-t-517-determining-the-tissue-equivalence-of-a-brass-mesh-bolus-in-a-reconstructed-chest-wall-irradiation
#3
E Shekel, D Epstein, D Levin
PURPOSE: To determine the tissue equivalence of a brass mesh bolus (RPD) in the setting of a reconstructed chest wall irradiation METHODS: We measured breast skin dose delivered by a tangential field plan on an anthropomorphic phantom using Mosfet and nanoDot (Landauer) dosimeters in five different locations on the breast. We also measured skin dose using no bolus, 5mm and 10 mm superflab bolus. In the Eclipse treatment planning system (Varian, Palo Alto, CA) we calculated skin dose for different bolus thicknesses, ranging from 0 to 10 mm, in order to evaluate which calculation best matches the brass mesh measurements, as the brass mesh cannot be simulated due to artefacts...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28042277/distal-extension-mandibular-removable-partial-denture-with-implant-support
#4
Canan Bural, Begum Buzbas, Sebnem Ozatik, Gulsen Bayraktar, Yusuf Emes
This case report describes the fabrication of a distal extension removable partial denture (RPD) of a 65-year-old man with implant support. Loss of fibroelasticity of the peripheral tissues and reduced mandibular vestibular sulcular depth due to a previous surgical resection and radiotherapy at the right side were the main clinical factors that created difficulty for denture retention and stability. The fabrication of a mandibular RPD supported by anterior teeth and two bilaterally placed implants in the molar area to convert from Kennedy Class 1 design to Kennedy Class 3 implant-bounded RPD is reported...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28038966/robotic-approach-mitigates-perioperative-morbidity-in-obese-patients-following-pancreaticoduodenectomy
#5
Mark D Girgis, Mazen S Zenati, Jennifer Steve, David L Bartlett, Amer Zureikat, Herbert J Zeh, Melissa E Hogg
INTRODUCTION: The aim was to evaluate the impact of obesity on perioperative outcomes in patients undergoing robotic pancreaticoduodenectomy (RPD) compared to open pancreaticoduodenectomy (OPD). METHODS: A retrospective review of all pancreaticoduodenectomies from 9/2011 to 4/2015 was performed. Obesity was defined as body mass index (BMI) > 30 kg/m(2). RESULTS: Of 474 pancreaticoduodenectomies performed: RPD = 213 (45%) and OPD = 261 (55%)...
December 27, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28030724/a-propensity-score-matched-analysis-of-robotic-vs-open-pancreatoduodenectomy-on-incidence-of-pancreatic-fistula
#6
Matthew T McMillan, Amer H Zureikat, Melissa E Hogg, Stacy J Kowalsky, Herbert J Zeh, Michael H Sprys, Charles M Vollmer
Importance: The adoption of robotic pancreatoduodenectomy (RPD) is gaining momentum; however, its impact on major outcomes, including pancreatic fistula, has yet to be adequately compared with open pancreatoduodenectomy (OPD). Objective: To demonstrate that use of RPD does not increase the incidence of clinically relevant pancreatic fistula (CR-POPF) compared with OPD. Design, Setting, and Participants: Data were accrued from 2846 patients who underwent pancreatoduodenectomies (OPDs, n = 2661; RPDs, n = 185), performed by 51 surgeons at 17 institutions worldwide (2003-2015)...
December 28, 2016: JAMA Surgery
https://www.readbyqxmd.com/read/28011369/near-infrared-spectroscopy-combined-with-multivariate-analysis-for-monitoring-the-ethanol-precipitation-process-of-fraction-i-ii-iii-supernatant-in-human-albumin-separation
#7
Can Li, Fei Wang, Lixuan Zang, Hengchang Zang, Manel Alcalà, Lei Nie, Mingyu Wang, Lian Li
Nowadays, as a powerful process analytical tool, near infrared spectroscopy (NIRS) has been widely applied in process monitoring. In present work, NIRS combined with multivariate analysis was used to monitor the ethanol precipitation process of fraction I+II+III (FI+II+III) supernatant in human albumin (HA) separation to achieve qualitative and quantitative monitoring at the same time and assure the product's quality. First, a qualitative model was established by using principal component analysis (PCA) with 6 of 8 normal batches samples, and evaluated by the remaining 2 normal batches and 3 abnormal batches...
December 15, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28003929/rapid-quantitative-analysis-of-forest-biomass-using-fourier-transform-infrared-spectroscopy-and-partial-least-squares-regression
#8
Gifty E Acquah, Brian K Via, Oladiran O Fasina, Lori G Eckhardt
Fourier transform infrared reflectance (FTIR) spectroscopy has been used to predict properties of forest logging residue, a very heterogeneous feedstock material. Properties studied included the chemical composition, thermal reactivity, and energy content. The ability to rapidly determine these properties is vital in the optimization of conversion technologies for the successful commercialization of biobased products. Partial least squares regression of first derivative treated FTIR spectra had good correlations with the conventionally measured properties...
2016: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/27979304/determination-of-gossypol-content-in-cottonseeds-by-near-infrared-spectroscopy-based-on-monte-carlo-uninformative-variable-elimination-and-nonlinear-calibration-methods
#9
Cheng Li, Tianlun Zhao, Cong Li, Lei Mei, En Yu, Yating Dong, Jinhong Chen, Shuijin Zhu
Near infrared (NIR) spectroscopy combined with Monte Carlo uninformative variable elimination (MC-UVE) and nonlinear calibration methods employed to determine gossypol content in cottonseeds were investigated. The reference method was performed by high performance liquid chromatography coupled to an ultraviolet detector (HPLC-UV). MC-UVE was employed to extract the effective information from the full NIR spectra. Nonlinear calibration methods were applied to establish the models compared with the linear method...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27975094/critical-evaluation-of-spectral-information-of-benchtop-vs-portable-near-infrared-spectrometers-quantum-chemistry-and-two-dimensional-correlation-spectroscopy-for-a-better-understanding-of-pls-regression-models-of-the-rosmarinic-acid-content-in-rosmarini-folium
#10
Christian G Kirchler, Cornelia K Pezzei, Krzysztof B Beć, Sophia Mayr, Mika Ishigaki, Yukihiro Ozaki, Christian W Huck
In the present work the performances of one benchtop and two different types of miniaturized near-infrared (NIR)-spectrometers were tested and compared for the first time by the determination of the rosmarinic acid (RA) content of dried and powdered Rosmarini folium. The recorded NIR spectra were utilized in hyphenation with multivariate data analysis (MVA) to calculate Partial Least Squares (PLS) regression models. Quality parameters obtained from Cross Validation (CV) revealed that the benchtop NIR-device "NIRFlex N-500 FT-NIR spectrometer" achieved the best result with a R(2) of 0...
December 15, 2016: Analyst
https://www.readbyqxmd.com/read/27928665/systematic-review-and-meta-analysis-of-robotic-versus-open-pancreaticoduodenectomy
#11
Long Peng, Shengrong Lin, Yong Li, Weidong Xiao
BACKGROUND: Although robotic pancreaticoduodenectomy (RPD) has been successfully performed since 2003, its advantages over open pancreaticoduodenectomy (OPD) are still uncertain. The aim of this systematic review and meta-analysis was to compare the clinical outcomes of RPD to those of OPD. METHODS: A systematic literature review was performed to identify RPD versus OPD comparative studies published between January 2003 and January 2016. Intraoperative outcomes, post-operative outcomes and oncologic safety were evaluated...
December 7, 2016: Surgical Endoscopy
https://www.readbyqxmd.com/read/27926751/ocular-perfusion-pressure-and-choroidal-thickness-in-early-age-related-macular-degeneration-patients-with-reticular-pseudodrusen
#12
Cheolmin Yun, Jaemoon Ahn, Minjung Kim, Soon-Young Hwang, Seong-Woo Kim, Jaeryung Oh
Purpose: The purpose of this study was to investigate the relationship between the ocular perfusion pressure (OPP) and subfoveal choroidal thickness (CT) in eyes with early age-related macular degeneration (AMD) with or without reticular pseudodrusen (RPD). Methods: We evaluated the clinical history, blood pressure parameters, fundus photography, and optical coherence tomography images of consecutive patients with early AMD. We calculated the mean OPP from blood pressure and intraocular pressure...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27914668/three-dimensional-finite-element-analysis-of-implant-assisted-removable-partial-dentures
#13
Ju-Won Eom, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
STATEMENT OF PROBLEM: Whether the implant abutment in implant-assisted removable partial dentures (IARPDs) functions as a natural removable partial denture (RPD) tooth abutment is unknown. PURPOSE: The purpose of this 3-dimensional finite element study was to analyze the biomechanical behavior of implant crown, bone, RPD, and IARPD. MATERIAL AND METHODS: Finite element models of the partial maxilla, teeth, and prostheses were generated on the basis of a patient's computed tomographic data...
November 30, 2016: Journal of Prosthetic Dentistry
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
#14
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
#15
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...
December 6, 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
#16
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
#17
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
#18
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
#19
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
#20
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
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