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https://www.readbyqxmd.com/read/28806830/-the-size-and-proportion-of-the-interphalangeal-finger-joints-an%C3%A2-anatomic-study
#1
Christoph Faymonville, Thomas Gausepohl, Lars Peter Müller, Michael Hackl
Background This study aimed to evaluate the size of the joint surfaces of the proximal and distal interphalangeal finger joints. Material and Methods 117 proximal and distal interphalangeal joints of 30 formalin-fixed hands of body donors were included in this study. The size of the articular surface was determined for each joint. Results The mean size of the proximal joint surface of the distal interphalangeal joint is 56.1 mm(2); the distal joint surface averages 30.9 mm(2) (ratio: 1.8:1). The size of the proximal articular surface of the proximal interphalangeal joint is 92...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28806829/-lundborg-s-resection-arthroplasty-vs-pyrocarbon-spacer-pyrocardan%C3%A2-for-the-treatment-of-trapeziometacarpal-joint-osteoarthritis-a-two-centre-study
#2
Holger C Erne, Daniel Schmauß, Michael Cerny, Verena Schmauss, Denis Ehrl, Steffen Löw, Stefan Deiler
Background Various operative approaches exist for osteoarthritis of the trapeziometacarpal joint. The aim of this two-centre study was to compare the results of Lundsborg's resection arthroplasty with the implantation of the Pyrocardan(®) spacer. Patients and methods We treated 20 patients with symptomatic osteoarthritis of the trapeziometacarpal joint in stage III / IV (Eaton-Littler classification). Twelve patients received Lundsborg's resection arthroplasty (centre 1), and in 8 patients a Pyrocardan(®) spacer was implanted (centre 2)...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28806825/-completeness-and-reproducibility-of-surgical-reports-a%C3%A2-retrospective-analysis-of-documentation-quality-using-the-example-of-dupuytren-s-disease
#3
Elisabeth Russe, Andrea Wenger, Gottfried Wechselberger, Hildegunde Piza-Katzer
Background A surgical report is the surgeon's postoperative documentation of the procedure undertaken. The purpose of this study was to evaluate the completeness and accuracy of data extracted from surgical reports, using the example of Dupuytren's disease. Material and Methods Between 1999 and 2007, surgical data were retrospectively collected from all primary Dupuytren's disease procedures performed at an academic department for plastic and reconstructive surgery and analysed for completeness. A surgical report was assessed as complete if data on indication, affected side and finger(s), tourniquet, type of incision and surgical procedure were stated...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28806668/combination-of-electrochemical-biosensor-and-textile-threads-a-microfluidic-device-for-phenol-determination-in-tap-water
#4
F R Caetano, E A Carneiro, D Agustini, L C S Figueiredo-Filho, C E Banks, M F Bergamini, L H Marcolino-Junior
Microfluidic devices constructed using low cost materials presents as alternative for conventional flow analysis systems because they provide advantages as low consumption of reagents and samples, high speed of analysis, possibility of portability and the easiness of construction and maintenance. Herein, is described for the first time the use of an electrochemical biosensor for phenol detection combined with a very simple and efficient microfluidic device based on commercial textile threads. Taking advantages of capillary phenomena and gravity forces, the solution transportation is promoted without any external forces or injection pump...
July 29, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28806661/low-cost-and-non-fluoride-flowerlike-superhydrophobic-particles-fabricated-for-both-emulsions-separation-and-dyes-adsorption
#5
Fei Guo, Qiuying Wen, Zhiguang Guo
Green fluoride-free superhydrophobic hierarchical flowerlike iron-containing MnO2 particles were synthesized by a simple one-pot approach and subsequently modified by stearic acid. The special selective wettability toward water and oil makes the particle can be used in oil-in-water emulsion separation. In addition, the particle also can be applied as absorption material to remove dyes which are serious water contaminants. More importantly, as for the mixture of emulsion and dye, the particles also have the ability to remove both oil and dye, making the particles potential for wastewater purification in the future...
August 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28806659/single-step-method-to-fabricate-durable-superliquiphobic-coating-on-aluminum-surface-with-self-cleaning-and-anti-fogging-properties
#6
D Nanda, P Varshney, M Satapathy, S S Mohapatra, B Bhushan, A Kumar
The development of self-cleaning and anti-fogging durable superliquiphobic coatings for aluminum surfaces has raised tremendous interest in materials science. In this study, a superliquiphobic coating is fabricated on an aluminum surface by a single-step dip-coating method using 1H,1H,2H,2H-Perfluorooctyltrichlorosilane-modified SiO2 nanoparticles. The successful implementation of the aforesaid coating in different applications requires extensive investigations of its characteristics and stability. To understand the properties of the coating, surface morphology, contact angle, self-cleaning, anti-fogging, and water repellency were investigated under perturbation conditions...
August 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28806657/two-dimensional-metal-chalcogenides-analogous-nise2-nanosheets-and-its-efficient-electrocatalytic-performance-towards-glucose-sensing
#7
Sakthivel Mani, Sukanya Ramaraj, Shen-Ming Chen, Bose Dinesh, Tse-Wei Chen
Recently, 2D layered transition-metal dichalcogenide materials have received great consideration because of their unique electronic properties, large surface area and high electrocatalytic activity. In this connection, for the first time the similar nanostructured material of NiSe2 nanosheets (NiSe2-NS) has been synthesized by a facile hydrothermal method for electrocatalytic applications. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), Energy Dispersive X-ray analysis (EDX), X-ray diffraction spectrum (XRD) results confirmed the formation of NiSe2-NS with required stoichiometry and morphology...
August 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28806655/magnetic-reduced-graphene-oxide-loaded-hydrogels-highly-versatile-and-efficient-adsorbents-for-dyes-and-selective-cr-vi-ions-removal
#8
Fatima Halouane, Yavuz Oz, Dalila Meziane, Alexandre Barras, Jean Juraszek, Santosh K Singh, Sreekumar Kurungot, Pankaj K Shaw, Rana Sanyal, Rabah Boukherroub, Amitav Sanyal, Sabine Szunerits
The formation of composites of reduced graphene oxide (rGO) and magnetic nanoparticles (MP) has flourished in recent years as they combine the advantages of both nanomaterials. Most of these composite materials are prepared by in situ formation of MP onto rGO or by the post-adsorption onto rGO. We report here on a simple and highly controlled method for the fabrication of different magnetic 3D rGO-loaded hydrogels. Cellulose bound magnetic nanoparticles (MP@cellulose) were synthesized by chemical co-precipitation and loaded together with rGO into poly(ethylene glycol) dimethacrylate based hydrogels during their fabrication using photo-polymerization...
July 28, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28806654/magnetic-separable-chitosan-microcapsules-decorated-with-silver-nanoparticles-for-catalytic-reduction-of-4-nitrophenol
#9
Peng Xu, Xuguang Liang, Nannan Chen, Jingen Tang, Wei Shao, Qinwei Gao, Zhaogang Teng
In the work, we have synthesized silver (Ag) nanoparticles deposited chitosan (CS) microcapsules with magnetic multiple Fe3O4 cores (denoted as Fe3O4/CS-Ag) as efficient catalysts for the reduction of 4-nitrophenol. The Fe3O4/CS-Ag catalysts are prepared by coating hydrophobic Fe3O4 nanoparticles with chitosan via a multiple emulsion-chemical crosslinking method and following in situ deposition of Ag nanoparticles onto the surfaces. The morphology and composition of the Fe3O4/CS-Ag microcapsules are characterized by Fourier transform infrared (FT-IR) spectra, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy...
August 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28806646/static-flexural-properties-of-hedgehog-spines-conditioned-in-coupled-temperature-and-relative-humidity-environments
#10
Emily B Kennedy, Bor-Kai Hsiung, Nathan B Swift, Kwek-Tze Tan
Hedgehogs are agile climbers, scaling trees and plants to heights exceeding 10m while foraging insects. Hedgehog spines (a.k.a. quills) provide fall protection by absorbing shock and could offer insights for the design of lightweight, material-efficient, impact-resistant structures. There has been some study of flexural properties of hedgehog spines, but an understanding of how this keratinous biological material is affected by various temperature and relative humidity treatments, or how spine color (multicolored vs...
August 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28806596/development-of-an-effective-dose-coefficient-database-using-a-computational-human-phantom-and-monte-carlo-simulations-to-evaluate-exposure-dose-for-the-usage-of-norm-added-consumer-products
#11
Do Hyeon Yoo, Wook-Geun Shin, Jaekook Lee, Yeon Soo Yeom, Chan Hyeong Kim, Byung-Uck Chang, Chul Hee Min
After the Fukushima accident in Japan, the Korean Government implemented the "Act on Protective Action Guidelines Against Radiation in the Natural Environment" to regulate unnecessary radiation exposure to the public. However, despite the law which came into effect in July 2012, an appropriate method to evaluate the equivalent and effective doses from naturally occurring radioactive material (NORM) in consumer products is not available. The aim of the present study is to develop and validate an effective dose coefficient database enabling the simple and correct evaluation of the effective dose due to the usage of NORM-added consumer products...
August 9, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28806567/strategies-to-analyse-data-obtained-from-liquid-intrusion-experiments-of-loose-porous-materials
#12
Geoffrey Tan, David A V Mortona, Ian Larson
Liquid intrusion remains one of the most common methods to measure the contact angle of liquids to powders. However, as there are two unknown variables in the Washburn equation: the material constant (that is, the pore structure of the powder bed) and the contact angle of the liquid to the powder, this method requires the use of two liquids-a liquid of interest (the probe liquid) and a reference liquid. The reference liquid should, ideally, make a contact angle of 0° to the sample. However, in practice a low surface tension liquid is normally selected...
August 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28806560/tio2-porous-adsorbents-recent-advances-and-novel-applications
#13
REVIEW
Shayan MiarAlipour, Donia Friedmann, Jason Scott, Rose Amal
This article reviews two interrelated areas of research: the first is the use of TiO2-supported adsorbent materials as enhanced heterogeneous photocatalysts and their application to various reactions for organic pollutant removal from air and water; the second is the combination of adsorbent materials with TiO2 photocatalysts which aims to efficiently regenerate adsorbent materials using illumination. By reviewing both areas of research, the following topics are covered; (i) photocatalytic activation of TiO2; (ii) related properties of photocatalytic TiO2; (iii) shortcomings of photocatalytic processes; (iv) preparation methods of composite TiO2/adsorbent materials and their photocatalytic performance; (v) properties of common adsorbents and their applications for pollutant removal from air and water; (vi) adsorbent regeneration methods and their economic and operational issues; (vii) conclusions and future outlooks...
August 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28806552/exposure-of-engineered-nanoparticles-to-alexandrium-tamarense-dinophyceae-healthy-impacts-of-nanoparticles-via-toxin-producing-dinoflagellate
#14
Manlu Li, Daoyi Chen, Yang Liu, Chia Ying Chuang, Fanzhou Kong, Paul J Harrison, Xiaoshan Zhu, Yuelu Jiang
Human activities can enhance the frequency, intensity and occurrence of harmful algal blooms (HABs). Engineered nanoparticles (ENPs), contained in many materials, will inevitably enter coastal waters and thus cause unpredictable impacts on aquatic organisms. However, knowledge of the influence of ENPs on HAB species is still lacking. In this study, we examined the effects of titanium dioxide nanoparticles (nTiO2), zinc oxide nanoparticles (nZnO) and aluminum oxide nanoparticles (nAl2O3) on physiological changes and paralytic shellfish poisoning toxins (PSTs) production of Alexandrium tamarense...
August 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28806520/tailoring-the-doping-mechanisms-at-oxide-interfaces-in-nanoscale
#15
Weitao Dai, Ming Yang, Hyungwoo Lee, Jung-Woo Lee, Chang-Beom Eom, Cheng Cen
Here we demonstrate the nanoscale manipulations of two types of charge transfer to the LaAlO3/SrTiO3 interfaces: one from surface adsorbates and another from oxygen vacancies inside LaAlO3 films. This method can be used to produce multiple insulating and metallic interface states with distinct carrier properties that are highly stable in air. By reconfigurably patterning and comparing interface structures formed from different doping sources, effects of extrinsic and intrinsic material characters on the transport properties can be distinguished...
August 14, 2017: Nano Letters
https://www.readbyqxmd.com/read/28806508/cubic-fluorite-type-cah2-with-a-small-bandgap
#16
Hiroshi Mizoguchi, SangWon Park, Takashi Honda, Kazutaka Ikeda, Toshiya Otomo, Hideo Hosono
A cubic variant of CaH2 adopting a fluorite-type crystal structure was synthesized by cationic substitution with La or Y, yielding the first alkaline earth hydride-based with fluorite-type framework. The material has a bandgap of ∼2.5 eV (greenish yellow in color), which is much smaller than that of orthorhombic PbCl2-type CaH2 (4.4 eV) and is, in fact, the smallest among alkaline or alkaline earth metal hydrides reported to date. Analysis of the density functional theory band structure of cubic-CaH2 indicates that its conduction band minimum is formed mainly by the interaction between the Ca 3d eg orbitals around the crystallographic cavity defined by cubes of H(-) ions...
August 14, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28806430/a-randomized-controlled-trial-of-mastication-with-complete-dentures-made-by-a-conventional-or-an-abbreviated-technique
#17
Cristiane Machado Mengatto, Gustavo Hauber Gameiro, Mario Brondani, C Peter Owen, Michael I MacEntee
PURPOSE: The aim of this randomized clinical trial was to test the hypothesis that there are no statistically significant differences after 3 and 6 months in masticatory performance or chewing ability of people with new complete dentures made by an abbreviated or a conventional technique. MATERIALS AND METHODS: The trial included 20 edentulous participants at a dental school in Brazil assigned randomly to receive dentures made by either a conventional technique involving six clinical sessions or by an abbreviated technique involving three clinical sessions...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28806427/fixed-dental-prostheses-and-single-tooth-crowns-based-on-ceria-stabilized-tetragonal-zirconia-alumina-nanocomposite-frameworks-outcome-after-2-years-in-a-clinical-trial
#18
Fabian Hüttig, Jan P Keitel, Andreas Prutscher, Sebastian Spintzyk, Andrea Klink
PURPOSE: This clinical trial tested bilayered restorations based on ceria-stabilized tetragonal zirconia/alumina frameworks veneered with feldspathic ceramic. MATERIALS AND METHODS: A total of 67 crowns and 40 fixed dental prostheses (FDPs) were luted in 57 patients with self-etching/self-adhesive composite resin cement. Dental status and integrity of restorations were evaluated at 2 weeks, 6 months, and then annually. RESULTS: A total of 66 crowns and 36 FDPs (88% posterior) survived for success rates of 93...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28806422/silver-nanoparticles-as-a-control-agent-against-facades-coated-by-aerial-algae-a-model-study-of-apatococcus-lobatus-green-algae
#19
Paulina Nowicka-Krawczyk, Joanna Żelazna-Wieczorek, Tomasz Koźlecki
Aerial algae are an important biological factor causing the biodegradation of building materials and facades. Conservation procedures aimed at the protection of historic and utility materials must be properly designed to avoid an increase of the degradation rate. The aim of the present study was to investigate the effect of silver nanoparticles (AgNP) synthetized with features contributing to the accessibility and toxicity (spherical shape, small size) on the most frequently occurring species of green algae in aerial biofilms and thus, the most common biodegradation factor-Apatococcus lobatus...
2017: PloS One
https://www.readbyqxmd.com/read/28806392/kaempferol-alleviates-the-interleukin-1%C3%AE-induced-inflammation-in-rat-osteoarthritis-chondrocytes-via-suppression-of-nf-%C3%AE%C2%BAb
#20
Zhengling Zhuang, Guangqun Ye, Bin Huang
BACKGROUND This study was designed to examine the anti-inflammatory and anti-osteoarthritis (OA) effects of kaempferol in rat articular chondrocytes stimulated with interleukin-1β. MATERIAL AND METHODS Rat articular chondrocytes cultures were treated with interleukin-1β alone or with kaempferol (25, 50, 100, and 200 μM) and interleukin-1β. The effect of kaempferol on chondrocyte cells viability was measured by MTT assay. The effect on prostaglandin E2 (PGE2) and nitric oxide (NO) level were also assessed using the ELISA and Griess reagent, respectively, for kaempferol activity...
August 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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