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https://www.readbyqxmd.com/read/28441733/bioactivity-studies-on-titania-coatings-and-the-estimation-of-their-usefulness-in-the-modification-of-implant-surfaces
#1
Aleksandra Radtke, Adrian Topolski, Tomasz Jędrzejewski, Wiesław Kozak, Beata Sadowska, Marzena Więckowska-Szakiel, Piotr Piszczek
Morphologically different titania coatings (nanofibers (TNFs), nanoneedles (TNNs), and nanowires (TNWs)) were studied as potential biomedical materials. The abovementioned systems were produced in situ on Ti6Al4V substrates via direct oxidation processes using H₂O₂ and H₂O₂/CaCl₂ agents, and via thermal oxidation in the presence of Ar and Ar/H₂O₂. X-ray diffraction and Raman spectroscopy have been used to structurally characterize the produced materials. The morphology changes on the titanium alloy surface were investigated using scanning electron microscopy...
April 22, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28441609/dechlorane-plus-induces-oxidative-stress-and-decreases-cyclooxygenase-activity-in-the-blue-mussel
#2
Pierre-Luc Gagné, Marlène Fortier, Marc Fraser, Lise Parent, Cathy Vaillancourt, Jonathan Verreault
Dechlorane Plus (DP) is a chlorinated flame retardant used mainly in electrical wire and cable coating, computer connectors, and plastic roofing materials. Concentrations of DP (syn and anti isomers) are increasingly being reported in aquatic ecosystems worldwide. However, there is exceedingly little information on the exposure-related toxicity of DP in aquatic organisms, especially in bivalves. The objective of this study was to investigate the in vivo and in vitro effects of DP exposure on histopathology, lipid peroxidation (LPO) levels, cyclooxygenase (COX) activity, phagocytosis capacity and efficiency, and DNA strand breakage in the blue mussel (Mytilus edulis) following a 29days exposure (0...
April 17, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28441606/growth-inhibition-and-antibiofilm-potential-of-ag-nanoparticles-coated-with-lectin-an-arthropod-immune-molecule
#3
Sangily Jayanthi, Sathappan Shanthi, Baskaralingam Vaseeharan, Narayanan Gopi, Marimuthu Govindarajan, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Giovanni Benelli
Lectins from the haemolymph of arthropods, including crustaceans, are molecules potentially involved in the immune recognition and phagocytosis. Here, lectin was purified from the haemolymph of blue swimmer crab Portunus pelagicus, using mannose-coupled sepharose CL-4B affinity column chromatography. In SDS-PAGE analysis, lectin showed a molecular mass of approximately 155kDa. The synthesis of lectin-coated silver nanoparticles (lectin-coated AgNPs) was confirmed by UV-Vis spectroscopy, XRD, FTIR, SEM, TEM, SAED, and EDX analysis...
April 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28441403/chronic-pain-and-sex-differences-women-accept-and-move-while-men-feel-blue
#4
Graciela S Rovner, Katharina S Sunnerhagen, Ann Björkdahl, Björn Gerdle, Björn Börsbo, Fredrik Johansson, David Gillanders
PURPOSE: The aim of this study is to explore differences between male and female patients entering a rehabilitation program at a pain clinic in order to gain a greater understanding of different approaches to be used in rehabilitation. METHOD: 1371 patients referred to a specialty pain rehabilitation clinic, completed sociodemographic and pain related questionnaires. They rated their pain acceptance (CPAQ-8), their kinesiophobia (TSK), the impact of pain in their life (MPI), anxiety and depression levels (HAD) and quality of life scales: the SF-36, LiSat-11, and the EQ-5D...
2017: PloS One
https://www.readbyqxmd.com/read/28441144/highly-efficient-inverted-organic-light-emitting-diodes-by-inserting-zinc-oxide-polyethyleneimine-zno-pei-nano-composite-interfacial-layer
#5
Rifat Kaçar, Selin Mucur, Fikret Yildiz, Salih Dabak, Emine Tekin
The electrode/organic interface is one of the crucial key factor to attain superior device performance in organic electronics, and inserting a tailor-made layer can dramatically modify its properties. Using of nano-composite (NC) materials lead to many advantages by combining the materials with the objective of getting desirable combination of properties. In this context, zinc oxide/polyethyleneimine (ZnO:PEI) NC film was incorporated as the interfacial layer into the inverted bottom-emission organic light emitting diodes (IBOLEDs) and fully optimized...
April 25, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28441012/rgb-switchable-porous-electrospun-nanofiber-chemoprobe-filter-prepared-from-multifunctional-copolymers-for-versatile-sensing-of-ph-and-heavy-metals
#6
Fang-Cheng Liang, Chi Ching Kuo, Bo-Yu Chen, Chia-Jung Cho, Chih-Chien Hung, Wen-Chang Chen, Redouane Borsali
Novel red-green-blue (RGB) switchable probes based on fluorescent porous electrospun (ES) nanofibers exhibiting high sensitivity to pH and mercury ions (Hg2+) were prepared with one type of copolymer (poly(methyl methacrylatete-co-1, 8-naphthalimide derivatives-co-rhodamine derivative); poly(MMA-co-BNPTU-co-RhBAM)) by using a single-capillary spinneret. The MMA, BNPTU, and RhBAM moieties were designed to (i) permit formation of porous fibers, (ii) fluoresce for Hg2+ detection, and (iii) fluoresce for pH, respectively...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28440890/fluorescence-and-autoradiographic-evaluation-of-tau-pet-ligand-pbb3-to-%C3%AE-synuclein-pathology
#7
Shunsuke Koga, Maiko Ono, Naruhiko Sahara, Makoto Higuchi, Dennis W Dickson
BACKGROUND: The tau PET ligand 2-((1E,3E)-4-(6-([(11) C]methylamino)pyridin-3-yl)buta-1,3-dienyl)benzo[d]thiazol-6-ol ([(11) C]PBB3) binds to a wide range of tau pathology; however, binding property of PBB3 to non-tau inclusions remains unknown. To clarify whether [(11) C]PBB3 binds to α-synuclein pathology, reactivity of PBB3 was assessed by in vitro fluorescence and autoradiographic labeling of brain sections from α-synucleinopathies patients. METHOD: Of 10 pure Lewy body disease and 120 multiple system atrophy (MSA) cases in the Mayo Clinic brain bank, we selected 3 Lewy body disease and 4 MSA cases with a range of α-synuclein severity based on the quantitative analysis of α-synuclein burden...
April 25, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28440889/a-glucagon-like-peptide-1-analog-liraglutide-improves-visceral-sensation-and-gut-permeability-in-rats
#8
Tsukasa Nozu, Saori Miyagishi, Shima Kumei, Rintaro Nozu, Kaoru Takakusaki, Toshikatsu Okumura
BACKGROUND AND AIM: A glucagon-like peptide-1 (GLP-1) analog, liraglutide, has been reported to block inflammatory somatic pain. We hypothesized that liraglutide attenuates lipopolysaccharide (LPS)- and repeated water avoidance stress (WAS)-induced visceral hypersensitivity and tested the hypothesis in rats. METHODS: The threshold of the visceromotor response (VMR) induced by colonic balloon distention was measured to assess visceral sensation. Colonic permeability was determined in vivo by quantifying the absorbed Evans blue spectrophotometrically, which was instilled in the proximal colon for 15 min...
April 25, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28439996/energy-dispersive-spectroscopy-scanning-transmission-electron-microscope-observations-of-free-radical-production-in-human-polymorphonuclear-leukocytes-phagocytosing-non-opsonized-tannerella-forsythia
#9
Keiichi Moriguchi, Yoshiaki Hasegawa, Naoya Higuchi, Yukitaka Murakami, Fuminobu Yoshimura, Kazuhiko Nakata, Masaki Honda
We investigated the association between human polymorphonuclear leukocytes (PMNs) and non-opsonized Tannerella forsythia ATCC 43037 displaying a serum-resistant surface layer (S-layer). When PMNs were mixed with T. forsythia in suspension, the cells phagocytosed T. forsythia cells. Nitro blue tetrazolium (NBT) reduction, indicative of O2- production, was observed by light microscopy; cerium (Ce) perhydroxide deposition, indicative of H2 O2 production, was observed by electron microscopy. We examined the relationship between high-molecular-weight proteins of the S-layer and Ce reaction (for T...
April 24, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28439143/dynamics-of-urban-informal-labor-supply-in-the-united-states
#10
Samara R Gunter
OBJECTIVE: This study provides the first panel data estimates of informal work in the US and explores relationships between informal- and regular-sector participation among urban parents of young children. METHODS: I examine determinants of informal-sector participation in five waves of data from the Fragile Families and Child Wellbeing Study using probit, pooled Tobit, and fixed effects OLS models. RESULTS: Approximately 53 percent of urban fathers and 32 percent of urban mothers with young children pursue informal work over a nine-year period...
March 2017: Social Science Quarterly
https://www.readbyqxmd.com/read/28439084/preparation-of-heterostructured-wo3-tio2-catalysts-from-wood-fibers-and-its-versatile-photodegradation-abilities
#11
Likun Gao, Wentao Gan, Zhe Qiu, Xianxu Zhan, Tiangang Qiang, Jian Li
A facile route was adopted to synthesize heterostructured WO3/TiO2 photocatalysts from wood fibers through a two-steps hydrothermal method and a calcination process. The prepared WO3/TiO2-wood fibers were used as photocatalysts under UV irradiation for photodegradation of rhodamine B, methylene blue and methyl orange. In calcination process, the wood fibers acted as carbon substrates to prepare the WO3/TiO2 photocatalysts with high surface area and unique morphology. Thus, the significant enhanced photodegradation efficiency of the organic pollutants with the WO3/TiO2-wood fibers under UV irradiation was obtained...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28438883/ewing-s-sarcoma-family-tumors-in-the-jaws-case-report-immunohistochemical-analysis-and-literature-review
#12
Ana Regina Casaroto, Marcelo Bonifacio DA Silva Sampieri, Cleverson Teixeira Soares, Paulo Sergio DA Silva Santos, Renato Yassutaka Faria Yaedu, José Humberto Damante, Vanessa Soares Lara
Due to the low incidence of the Ewing's Sarcoma (ES) family tumors, the available epidemiology is likely to be unreliable, and at present, there are no standard diagnostic or clinical guidelines outlining their management. This report describes a case of peripheral primitive neuroectodermal tumor (ES/pPNET) which initially mimicked cystic lesions, and describes a comparison between ES and ES/pPNET in the jaws by the World Health Organization classification. This review addressed 63 cases published in the English literature between 1950 and 2016...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28438153/damage-to-the-macula-associated-with-led-derived-blue-laser-exposure-a-case-report
#13
Lingling Liang, Zhihua Cui, Chengwei Lu, Qian Hao, Yajuan Zheng
BACKGROUND: Light emitting diodes laser is emerging as an important source of light replacing conventional lights. It is widely used for illumination in the bar where young people love to go. But not everyone knows about the light damage to the eye especially to the macula. In this article, we report the case of a macular damage induced by LED-derived blue laser in a bar, studied with optical coherence tomography (OCT) to evaluate the retinal lesion and multifocal electroretinography (mfERG) to evaluate functional damage...
April 24, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28438019/l-phenylalanine-tethered-naphthalene-diimide-based-aggregation-induced-green-emitting-organic-nanoparticles
#14
Pritam Choudhury, Krishnendu Das, Prasanta Kumar Das
The present article delineates the formation of green fluorescent organic nanoparticle through supramolecular aggregation of naphthalene diimide (NDI) based carboxybenzyl protected L-phenylalanine appended bola-amphiphile, NDI-1. The amphiphilic molecule is soluble in DMSO and with gradual addition of water within the DMSO solution, the amphiphile starts to get self-assembled via H-type aggregation to form spherical nanoparticles. These self-assembly of NDI-1 in presence of high amount of water, exhibited aggregation induced emission (AIE) through excimer formation...
April 24, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28438012/smartphone-based-dual-modality-imaging-system-for-quantitative-detection-of-color-or-fluorescent-lateral-flow-immunochromatographic-strips
#15
Yafei Hou, Kan Wang, Kun Xiao, Weijian Qin, Wenting Lu, Wei Tao, Daxiang Cui
Nowadays, lateral flow immunochromatographic assays are increasingly popular as a diagnostic tool for point-of-care (POC) test based on their simplicity, specificity, and sensitivity. Hence, quantitative detection and pluralistic popular application are urgently needed in medical examination. In this study, a smartphone-based dual-modality imaging system was developed for quantitative detection of color or fluorescent lateral flow test strips, which can be operated anywhere at any time. In this system, the white and ultra-violet (UV) light of optical device was designed, which was tunable with different strips, and the Sobel operator algorithm was used in the software, which could enhance the identification ability to recognize the test area from the background boundary information...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28437997/effect-of-zno-nanostructures-on-the-optical-properties-of-white-light-emitting-diodes
#16
Longshi Rao, Yong Tang, ZongTao Li, Xinrui Ding, Jiasheng Li, Shudong Yu, Caiman Yan, Hangaung Lu
White light produced by blue LEDs with yellow phosphor is the most widely used methods, but it results in poor quality in angular CCT uniformity. In this work, a novel technique was introduced to solve this problem by integrating different ZnO nanostructures into white light-emitting diodes. The experiment of ZnO doped films and the simulation of Finite-Difference Time-Domain (FDTD) were carried out. The result indicated scattering effect of ZnO nanoparticles could improve uniformity of scattering energy effectively...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437921/development-and-evaluation-of-colour-control-interfaces-for-led-lighting
#17
Wenye Hu, Wendy Davis
To capitalise on the colour tuning capabilities of LED lighting, a model for converting device-specific control signals to chromaticity coordinates was used in a psychophysical experiment evaluating the usability of three colour control interfaces based on RGB (red, green, blue), HSB (hue, saturation, brightness) and opponent colour mixing systems. Although common and well accepted, the RGB interface had lowest usability based on both psychophysical results and subjective ratings. The usability of HSB and opponent colour interfaces was not significantly different...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437742/biological-treatment-of-model-dyes-and-textile-wastewaters
#18
Alicia Paz, Julia Carballo, María José Pérez, José Manuel Domínguez
Previous works conducted in our laboratory, reveled that Bacillus aryabhattai DC100 produce ligninolytic enzymes such as laccases and/or peroxidases, opening new applications in different bioprocesses, including the treatment of disposal residues such as dyestuffs from textile processing industries. This work described the degradation of three commercial model dyes Coomassie Brilliant Blue G-250 (CBB), Indigo Carmine (IC) and Remazol Brilliant Blue R (RBBR) under different culture media and operational conditions...
April 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28437724/synthesis-of-zno-nanorod-based-materials-for-antibacterial-antifungal-activities-dna-cleavage-and-efficient-ultrasound-assisted-dyes-adsorption
#19
Ali Akbar Bazrafshan, Mehrorang Ghaedi, Shaaker Hajati, Reza Naghiha, Arash Asfaram
Undoped and Au-doped ZnO-nanorods were synthesized in the presence of ultrasound and loaded on activated carbon following characterization by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmittance electron microscopy (TEM), UV-vis spectrophotometry and Fourier transform infrared spectroscopy (FTIR). The Au-doped ZnO-nanorod-loaded activated carbon (Au-ZnO-NRs-AC) was used for the simultaneous removal of methylene blue (MB) and auramine O (AO) from aqueous solutions. Central composite design (CCD) under response surface methodology (RSM) was applied to model and optimize the dyes removal versus adsorbent mass, pH, and initial dyes concentration and sonication time as well as to investigate the possible interaction between these variables...
April 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28437686/synthesis-optical-properties-and-application-of-a-set-of-novel-pyrazole-nopinone-derivatives
#20
Jinlai Yang, Xu Xu, Jian Rui, Zhonglong Wang, Yan Zhang, Shifa Wang, Liangru Wu
Pyrazole derivatives (4-6) were directly synthesized from β-pinene derivative nopinone, and they were characterized by Fourier transform infrared (FTIR) spectoscope, nuclear magnetic resonance (NMR), and mass spectrometry. Their optical properties were investigated by ultraviolet-visible spectroscopy and fluorescence spectroscopy. The three compounds emitted strong blue fluorescence in ethanol. Using a fluorescence quenching method, compound 4 could be used to detect the content (100.57%) of copper sulfate pentahydrate (≥99%) with a RSD of 1...
April 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
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