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https://www.readbyqxmd.com/read/28613056/-a-preliminary-study-on-the-forming-quality-of-titanium-alloy-removable-partial-denture-frameworks-fabricated-by-selective-laser-melting
#1
Y F Liu, H Yu, W N Wang, B Gao
Objective: To evaluate the processing accuracy, internal quality and suitability of the titanium alloy frameworks of removable partial denture (RPD) fabricated by selective laser melting (SLM) technique, and to provide reference for clinical application. Methods: The plaster model of one clinical patient was used as the working model, and was scanned and reconstructed into a digital working model. A RPD framework was designed on it. Then, eight corresponding RPD frameworks were fabricated using SLM technique...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28593728/association-of-risk-genotypes-of-arms2-loc387715-a69s-and-cfh-y402h-with-age-related-macular-degeneration-with-and-without-reticular-pseudodrusen-a-meta-analysis
#2
REVIEW
Mohammad Hossein Jabbarpoor Bonyadi, Mehdi Yaseri, Homayoun Nikkhah, Mortaza Bonyadi, Masoud Soheilian
To pool the results of published data regarding association of ARMS2/LOC387715 A69S, CFH Y402H and CFH I62V genotypes with age-related macular degeneration (AMD) with and without reticular pseudodrusen (RPD). The results of this pooled data used to estimate the contribution of each of these genes in the pathogenesis of RPD. Heterogeneity of studies was evaluated using Cochran Q-test and I(2) index. To modify the heterogeneity in the variables, we used the random effects model. Meta-analysis was performed using STATA...
June 8, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28590092/additive-manufacturing-a-novel-method-for-fabricating-cobalt-chromium-removable-partial-denture-frameworks
#3
Frank Alifui-Segbaya, Robert John Williams, Roy George
Additive manufacturing (AM) often referred to as 3D printing (3DP) has shown promise of being significantly viable in the construction of cobalt-chromium removable partial denture (RPD) frameworks. The current paper seeks to discuss AM technologies (photopolymerization processes and selective laser melting) and review their scope. The review also discusses the clinical relevance of cobalt-chromium RPD frameworks. All relevant publications in English over the last 10 years, when the first 3D-printed RPD framework was reported, are examined...
June 2017: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28573565/concentration-estimation-of-heavy-metal-in-soils-from-typical-sewage-irrigation-area-of-shandong-province-china-using-reflectance-spectroscopy
#4
Fei Wang, Chunfang Li, Jining Wang, Wentao Cao, Quanyuan Wu
Since sewage irrigation can markedly disturb the status of heavy metals in soils, a convenient and accurate technique for heavy metal concentration estimation is of utmost importance in the cropland using wastewater for irrigation. This study therefore assessed the feasibility of visible and near infrared reflectance (VINR) spectroscopy for predicting heavy metal contents including Cr, Cu, Ni, Pb, Zn, As, Cd, and Hg in the north plain of Longkou city, Shandong Province, China. A total of 70 topsoil samples were taken for in situ spectra measurement and chemical analysis...
June 1, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28564702/associations-between-%C3%AE-peripapillary-atrophy-and-reticular-pseudodrusen-in-early-age-related-macular-degeneration
#5
Aakriti Garg, Dana M Blumberg, Lama A Al-Aswad, Maris Oll, Suzanne Yzer, Max Forbes, Rando L Allikmets, Srilaxmi Bearelly
Purpose: Choroidal thinning has been associated with reticular pseudodrusen (RPD) and β-peripapillary atrophy (β-PPA), which have been linked to normal-tension glaucoma (NTG). This analysis sought to determine whether RPD are independently associated with β-PPA in early AMD patients. Secondary outcomes included the association of RPD and preexisting diagnosis of glaucoma, cup-to-disc ratio (CDR), subfoveal choroidal thickness (SFCT), and IOP. Methods: This prospective cross-sectional study examined 78 age- and sex-matched early AMD patients: 43 RPD patients (63 eyes) and 35 non-RPD patients (64 eyes)...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28561993/removable-partial-denture-alloys-processed-by-laser-sintering-technique
#6
Omar Alageel, Mohamed-Nur Abdallah, Ammar Alsheghri, Jun Song, Eric Caron, Faleh Tamimi
Removable partial dentures (RPDs) are traditionally made using a casting technique. New additive manufacturing processes based on laser sintering has been developed for quick fabrication of RPDs metal frameworks at low cost. The objective of this study was to characterize the mechanical, physical, and biocompatibility properties of RPD cobalt-chromium (Co-Cr) alloys produced by two laser-sintering systems and compare them to those prepared using traditional casting methods. The laser-sintered Co-Cr alloys were processed by the selective laser-sintering method (SLS) and the direct metal laser-sintering (DMLS) method using the Phenix system (L-1) and EOS system (L-2), respectively...
May 31, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28558680/arginine-supplementation-modulates-pig-plasma-lipids-but-not-hepatic-fatty-acids-depending-on-dietary-protein-level-with-or-without-leucine
#7
Marta Sofia Morgado Dos Santos Madeira, Eva Sofia Alves Rolo, Virgínia Maria Rico Pires, Cristina Maria Riscado Pereira Mateus Alfaia, Diogo Francisco Maurício Coelho, Paula Alexandra Antunes Brás Lopes, Susana Isabel Vargas Martins, Rui Manuel Amaro Pinto, José António Mestre Prates
BACKGROUND: In the present study, the effect of arginine and leucine supplementation, and dietary protein level, were investigated in commercial crossbred pigs to clarify their individual or combined impact on plasma metabolites, hepatic fatty acid composition and mRNA levels of lipid sensitive factors. The experiment was conducted on fifty-four entire male pigs (Duroc × Pietrain × Large White × Landrace crossbred) from 59 to 92 kg of live weight. Each pig was randomly assigned to one of six experimental treatments (n = 9)...
May 30, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28539730/near-infrared-spectroscopy-as-a-process-analytical-technology-tool-for-monitoring-the-parching-process-of-traditional-chinese-medicine-based-on-two-kinds-of-chemical-indicators
#8
Kaiyue Li, Weiying Wang, Yanping Liu, Su Jiang, Guo Huang, Liming Ye
BACKGROUND: The active ingredients and thus pharmacological efficacy of traditional Chinese medicine (TCM) at different degrees of parching process vary greatly. OBJECTIVE: Near-infrared spectroscopy (NIR) was used to develop a new method for rapid online analysis of TCM parching process, using two kinds of chemical indicators (5-(hydroxymethyl) furfural [5-HMF] content and 420 nm absorbance) as reference values which were obviously observed and changed in most TCM parching process...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28531129/rapid-and-cost-effective-quantification-of-glucosinolates-and-total-phenolic-content-in-rocket-leaves-by-visible-near-infrared-spectroscopy
#9
Eva María Toledo-Martín, Rafael Font, Sara Obregón-Cano, Antonio De Haro-Bailón, Myriam Villatoro-Pulido, Mercedes Del Río-Celestino
The potential of visible-near infrared spectroscopy to predict glucosinolates and total phenolic content in rocket (Eruca vesicaria) leaves has been evaluated. Accessions of the E. vesicaria species were scanned by NIRS as ground leaf, and their reference values regressed against different spectral transformations by modified partial least squares (MPLS) regression. The coefficients of determination in the external validation (R²VAL) for the different quality components analyzed in rocket ranged from 0.59 to 0...
May 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28490860/choroidal-structure-determined-by-binarizing-optical-coherence-tomography-images-in-eyes-with-reticular-pseudodrusen
#10
Naonori Masuda, Masashi Kojima, Mariko Yamashita, Tomo Nishi, Nahoko Ogata
PURPOSE: To compare the choroidal structure beneath the macular area in eyes with reticular pseudodrusen (RPD) and age-matched controls. METHODS: This study was performed at Nara Medical University Hospital, Japan. Twenty eyes of 14 patients (82.3±4.2 years, mean ± standard deviation) with RPD and 35 eyes of 20 age-matched controls (81.5±6.0 years) were studied. The choroidal structure was determined by binarizing the images obtained by enhanced depth imaging optical coherence tomography in all patients and controls...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28490075/development-of-a-near-infrared-spectroscopy-method-nirs-for-fast-analysis-of-total-indolic-aliphatic-and-individual-glucosinolates-in-new-bred-open-pollinating-genotypes-of-broccoli-brassica-oleracea-convar-botrytis-var-italica
#11
Samira Sahamishirazi, Sabine Zikeli, Michael Fleck, Wilhelm Claupein, Simone Graeff-Hoenninger
This study describes the development of near-infrared spectroscopy (NIRS) calibration to determine individual and total glucosinolates (GSLs) content of 12 new-bred open-pollinating genotypes of broccoli (Brassica oleracea convar. botrytis var. italica). Six individual GSLs were identified using high-performance-liquid chromatography (HPLC). The NIRS calibration was established based on modified partial least squares regression with reference values of HPLC. The calibration was analyzed using coefficient of determination in prediction (R(2)) and ratio of preference of determination (RPD)...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28488325/models-to-improve-the-non-destructive-analysis-of-persimmon-fruit-properties-by-vis-nir-spectrometry
#12
Giuseppe Altieri, Francesco Genovese, Antonella Tauriello, Giovanni Carlo Di Renzo
BACKGROUND: Visible-near infrared spectrometry is a technique suitable to assess chemical and physiological properties of fruit. Some models of calibration/prediction have been tested in order to assess the feasibility of a visible-near infrared sensor in order to monitor persimmon fruits colour, firmness, soluble solids, titratable acidity and soluble tannins. RESULTS: Five regression models were investigated: principal component, partial least-squares, stepwise, support vector machines and ensembles of trees...
May 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28462759/reduced-protein-diets-increase-intramuscular-fat-of-psoas-major-a-red-muscle-in-lean-and-fatty-pig-genotypes
#13
M S Madeira, P A Lopes, P Costa, D Coelho, C M Alfaia, J A M Prates
The present study aims to assess the effects of pig's genotype (lean v. fatty) and dietary protein level (control v. reduced) on intramuscular fat (IMF) content, fatty acid composition and fibre profile of psoas major, a representative red muscle in pig's carcass scarcely studied relative to white longissimus lumborum. The experiment was conducted on 40 intact male pigs (20 Alentejana purebred and 20 Large White×Landrace×Pietrain crossbred) from 60 to 93 kg of live weight. Pigs were divided and allocated to four dietary groups: control protein diet equilibrated for lysine (17...
May 2, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28453544/predicting-herbivore-faecal-nitrogen-using-a-multispecies-near-infrared-reflectance-spectroscopy-calibration
#14
Miriam Villamuelas, Emmanuel Serrano, Johan Espunyes, Néstor Fernández, Jorge R López-Olvera, Mathieu Garel, João Santos, María Ángeles Parra-Aguado, Maurizio Ramanzin, Xavier Fernández-Aguilar, Andreu Colom-Cadena, Ignasi Marco, Santiago Lavín, Jordi Bartolomé, Elena Albanell
Optimal management of free-ranging herbivores requires the accurate assessment of an animal's nutritional status. For this purpose 'near-infrared reflectance spectroscopy' (NIRS) is very useful, especially when nutritional assessment is done through faecal indicators such as faecal nitrogen (FN). In order to perform an NIRS calibration, the default protocol recommends starting by generating an initial equation based on at least 50-75 samples from the given species. Although this protocol optimises prediction accuracy, it limits the use of NIRS with rare or endangered species where sample sizes are often small...
2017: PloS One
https://www.readbyqxmd.com/read/28452227/prediction-of-lignin-content-in-different-parts-of-sugarcane-using-near-infrared-spectroscopy-nir-ordered-predictors-selection-ops-and-partial-least-squares-pls
#15
Camila Assis, Rachel S Ramos, Lidiane A Silva, Volmir Kist, Márcio H P Barbosa, Reinaldo F Teófilo
The building of multivariate calibration models using near-infrared spectroscopy (NIR) and partial least squares (PLS) to estimate the lignin content in different parts of sugarcane genotypes is presented. Laboratory analyses were performed to determine the lignin content using the Klason method. The independent variables were obtained from different materials: dry bagasse, bagasse-with-juice, leaf, and stalk. The NIR spectra in the range of 10 000-4000 cm(-1) were obtained directly for each material. The models were built using PLS regression, and different algorithms for variable selection were tested and compared: iPLS, biPLS, genetic algorithm (GA), and the ordered predictors selection method (OPS)...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28450227/spatial-phylogenetics-of-the-vascular-flora-of-chile
#16
Rosa A Scherson, Andrew H Thornhill, Rafael Urbina-Casanova, William A Freyman, Patricio A Pliscoff, Brent D Mishler
Current geographic patterns of biodiversity are a consequence of the evolutionary history of the lineages that comprise them. This study was aimed at exploring how evolutionary features of the vascular flora of Chile are distributed across the landscape. Using a phylogeny at the genus level for 87% of the Chilean vascular flora, and a geographic database of sample localities, we calculated phylogenetic diversity (PD), phylogenetic endemism (PE), relative PD (RPD), and relative PE (RPE). Categorical Analyses of Neo- and Paleo-Endemism (CANAPE) were also performed, using a spatial randomization to assess statistical significance...
April 24, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28415443/3-month-parenteral-plga-microsphere-formulations-of-risperidone-fabrication-characterization-and-neuropharmacological-assessments
#17
Sundeep Chaurasia, Kuchukuntla Mounika, Vasudha Bakshi, Vure Prasad
The study aims at formulation and characterization of three months parenteral risperidone loaded polymeric microspheres (p-RLPMs) as a sustained delivery system and established their in vitro and in vivo assessments. The p-RLPMs formulations were prepared by solvent extraction and diffusion method. The optimized p-RLPMs (batch RPLGA-1) formulation demonstrated favorable different physicochemical properties such as mean particle size (104±5.34μm), percent porosity (44.56±3.11%) and percent drug loading (38...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28411141/formulation-of-carbapenems-loaded-gold-nanoparticles-to-combat-multi-antibiotic-bacterial-resistance-in-vitro-antibacterial-study
#18
Mohamed A Shaker, Mona I Shaaban
Despite the fact that carbapenems (powerful β-lactams antibiotics) were able to fight serious infectious diseases, nowadays the spread of carbapenems-resistant bacteria is considered the main challenge in antibacterial therapy. In this study, we focused on evaluating the surface conjugation of carbapenems (imipenem and meropenem) with gold nanoparticles as a delivering strategy to specifically and safely maximize their therapeutic efficacy while destroying the developing resistance of the pathogens. Different particle size formulae (35, 70 and 200nm) were prepared by citrate reduction method...
April 11, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28409368/comparison-of-orvil%C3%A2-and-rpd-in-laparoscopic-total-gastrectomy-for-gastric-cancer
#19
Xi Li, Liang Hong, Dan Ding, Yaping Liu, Gengming Niu, Liang Li, Xin Wang, Xiaomei Li, Chongwei Ke
BACKGROUND: Laparoscopic total gastrectomy (LTG) is frequently performed for treating patients with gastric cancer; however, the absence of anastomotic techniques with greater superiority has impaired its popularization. We have compared two types of anastomotic techniques with regard to technical perspectives and clinical outcomes. METHODS: We reviewed 43 patients with gastric cancer who underwent LTG. Two types of anastomotic techniques have been applied after LTG-the trans-orally inserted anvil (OrVil™) and the reverse puncture device (RPD)...
April 13, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28406127/masticatory-efficiency-of-shortened-dental-arch-subjects-with-removable-partial-denture-a-comparative-study
#20
J O Omo, M A Sede, T A Esan
OBJECTIVE: The objective of this study was to compare the masticatory efficiency in subjects with shortened dental arch (SDA) before and after restoration with removable partial denture (RPD). MATERIALS AND METHODS: This was a prospective study carried out on 36 consecutive patients. The subjects were asked to chew 5 g of a measured portion of fresh raw carrot for 20 specified numbers of strokes. The raw carrot was recovered into a cup and strained through a standard mesh sieve of 5 mm by 1 mm, it was air dried for 30 min and weighed with FEM digital series weighing scale...
April 2017: Nigerian Journal of Clinical Practice
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