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Palavra-chave:'420816'
Exibindo 1-30 of 161 resultados for "
420816
" no prazo de PapéisDiane G Elliott et al.
Diseases of aquatic organisms, 114(1), 21-43 (2015-05-12)
Non-lethal pathogen testing can be a useful tool for fish disease research and management. Our research objectives were to determine if (1) fin clips, gill snips, surface mucus scrapings, blood draws, or kidney biopsies could be obtained non-lethally from 3
Wei Yan et al.
Journal of nanoscience and nanotechnology, 13(5), 3371-3376 (2013-07-19)
The present study compares the effects of two different material processing techniques on modifying hydrophilic SiO2 nanoparticles. In one method, the nanoparticles undergo plasma treatment by using a custom-developed atmospheric-pressure non-equilibrium plasma reactor. With the other method, they undergo chemical
Maressa D Dolzan et al.
Journal of chromatography. A, 1365, 124-130 (2014-09-28)
A new HILIC stationary phase comprised of native cyclofructan-6 (CF6) bonded to superficially porous silica particles (2.7μm) was developed. Its performance was evaluated and compared to fully porous silica particles with 5μm (commercially available as FRULIC-N) and 3μm diameters. Faster
Diatom silica-titania materials for photocatalytic air purification.
E Van Eynde et al.
Communications in agricultural and applied biological sciences, 78(1), 141-147 (2013-07-24)
Shelby G Topp et al.
Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery, 151(6), 952-959 (2014-10-12)
To develop a computational model of cutaneous wound closures comparing variations of the rhombic transposition flap. A nonlinear hyperelastic finite element model of human skin was developed and used to assess flap biomechanics in simulated rhombic flap wound closures as
Lier Deng et al.
Journal of nanoscience and nanotechnology, 14(6), 4622-4625 (2014-04-18)
A simple approach is presented for the fabrication of poly(methyl methacrylate) (PMMA) nanobowl arrays over cm2 areas using SiO2 colloidal crystal templates. SiO2 colloidal crystal templates were prepared on a clean glass substrate by self-assembled SiO2 spheres of 410 nm
Lutfiya Miller-Pinsler et al.
Toxicology and applied pharmacology, 287(3), 232-239 (2015-06-16)
Reactive oxygen species (ROS) have been implicated in the mechanism of ethanol (EtOH) teratogenicity, but the protective role of the embryonic antioxidative enzyme catalase is unclear, as embryonic activity is only about 5% of maternal levels. We addressed this question
The separation of cells and subcellular particles by colloidal silica density gradient centrifugation.
Wolff D A.
Methods in Cell Biology, 10, 85-104 (1975)
Séverine Rose et al.
Nature, 505(7483), 382-385 (2013-12-18)
Adhesives are made of polymers because, unlike other materials, polymers ensure good contact between surfaces by covering asperities, and retard the fracture of adhesive joints by dissipating energy under stress. But using polymers to 'glue' together polymer gels is difficult
Xinli Huang et al.
International journal of clinical and experimental pathology, 7(8), 4755-4764 (2014-09-10)
Human liver ischemia/reperfusion injury (IRI) is a common and major clinical problem complicating liver surgery and transplantation. The pathogenesis underlying IRI is complex, involving a series of signaling mediators and mechanisms. This study aimed to investigate the effects of Magnesium
Wei Liu et al.
Journal of nanoscience and nanotechnology, 14(4), 3068-3072 (2014-04-17)
Magnetic Fe3O4 nanoparticles were prepared with coprecipitatation method and covered with SiO2 to form the core-shell Fe3O4@SiO2 nanoparticles. Then the nanoparticles were modified with glutaradehyde for functionalization of the surface to aldehyde groups. The transmission electron microscopy confirmed the core-shell
Almoayied Assayed et al.
Environmental technology, 35(17-20), 2435-2446 (2014-08-26)
In this paper, results ofa new sand filter design were presented. The drawer compacted sand filter (DCSF) is a modified design for a sand filter in which the sand layer is broken down into several layers, each of which is
Ayat Allah Al-Massaedh et al.
Journal of chromatography. A, 1349, 80-89 (2014-05-27)
In our previous work we have described the synthesis, characterization, and optimization of the chromatographic efficiency of a highly crosslinked macroporous mixed-mode acrylamide-based monolithic stationary phase synthesized by in situ free radical copolymerization of cyclodextrin-solubilized N-adamantyl acrylamide, piperazinediacrylamide, methacrylamide and
D Vukosavljevic et al.
Journal of dental research, 93(5), 514-519 (2014-03-05)
The acquired enamel pellicle (AEP) is important for minimizing the abrasion caused by parafunctional conditions as they occur, for instance, during bruxism. It is a remarkable feature of the AEP that a protein/peptide film can provide enough protection in normofunction
Facilitated preparation of bioconjugatable zwitterionic quantum dots using dual-lipid encapsulation.
Robert Shrake et al.
Journal of colloid and interface science, 437, 140-146 (2014-10-15)
Zwitterionic quantum dots prepared through incorporated zwitterionic ligands on quantum dot surfaces, are being paid significant attention in biomedical applications because of their excellent colloidal stability across a wide pH and ionic strength range, antifouling surface, good biocompatibility, etc. In
G Cappelletti et al.
Environmental science and pollution research international, 22(22), 17733-17743 (2015-07-15)
In order to avoid both natural and artificial stone decay, mainly due to the interaction with atmospheric pollutants (both gases such as NOx and SO2 and particulate matter), polymeric materials have been widely studied as protective coatings enable to limit
Yi Min et al.
Journal of chromatography. A, 1356, 148-156 (2014-07-08)
In this work, 1.9 μm reversed-phase packing materials with superficially porous structure were prepared to achieve the rapid and high efficient separation of peptides and proteins. The silica particles were synthesized via three steps, nonporous silica particle preparation by a
E Rafeemanesh et al.
The international journal of occupational and environmental medicine, 5(3), 130-136 (2014-07-17)
Agate is a hard silica stone with bands of various colors, which is used in jewelry. The agate grinding workers are exposed to silica dust. To determine the prevalence of respiratory diseases in agate grinding workers and the associated factors.
Linda Kachuri et al.
International journal of cancer, 135(1), 138-148 (2013-11-26)
Crystalline silica is a recognized carcinogen, but the association with lung cancer at lower levels of exposure has not been well characterized. This study investigated the relationship between occupational silica exposure and lung cancer and the combined effects of cigarette
Alexander Liberman et al.
The Journal of surgical research, 190(2), 391-398 (2014-06-29)
High intensity-focused ultrasound (HIFU) is an alterative ablative technique currently being investigated for local treatment of breast cancer and fibroadenomas. Current HIFU therapies require concurrent magnetic resonance imaging monitoring. Biodegradable 500 nm perfluoropentane-filled iron-silica nanoshells have been synthesized as a sensitizing
Chun-Xia Zhu et al.
Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 38(20), 3479-3483 (2014-02-05)
To determine the optimum process for preparing Cinnamomi Cortex oil microspheres based on porous silicon dioxide. After porous silica dioxide adsorbed Cinnamomi Cortex oil, Cinnamomi Cortex oil microspheres were prepared by the dropping method, with sodium alginate as the skeleton
Nidhi Gupta et al.
Journal of nanoscience and nanotechnology, 13(7), 5069-5079 (2013-08-02)
Core-shell morphology of silica (SiO2) coated CdS nanocomposites (SiO2@CdS) of different shapes have been made for better stability, luminescence and photochemical activity of CdS nanoparticles. A thin layer (thickness 1-1.4 nm) of SiO2 shell is deposited over CdS nanorods (CdS-NR)
Sang-Ho Chung et al.
Journal of nanoscience and nanotechnology, 13(11), 7701-7706 (2013-11-20)
In this study, a novel, strategic method was developed for the synthesis of a mesoporous silica catalyst embedded with ruthenium nanoparticles (RuNPs/SiO2) by combining the polyol and modified sol-gel methods. By applying this new procedure, uniformly synthesized ruthenium nanoparticles with
Tonje Skuland et al.
Toxicology and applied pharmacology, 279(1), 76-86 (2014-05-23)
Amorphous silica nanoparticles (SiNPs) have previously been shown to induce marked cytokine (interleukin-6; IL-6 and interleukin-8; CXCL8/IL-8) responses independently of particle uptake in human bronchial epithelial BEAS-2B cells. In this study the involvement of the mitogen-activated protein kinases (MAP-kinases), nuclear
Joshua S Boateng et al.
Protein and peptide letters, 21(11), 1163-1175 (2014-08-08)
Stable and mucoadhesive, lyophilised, thiolated chitosan xerogels, loaded with insulin for buccal mucosa deliv- ery, in place of the currently used parenteral route have been developed. The xerogels were backed with impervious ethyl- cellulose laminate to ensure unidirectional release and
Xuewen Cui et al.
Journal of nanoscience and nanotechnology, 14(4), 2810-2815 (2014-04-17)
The cationic PLL-Fe2o3/SiO2-siRNA nanoparticles with an average crystallite size of about 20 nm were prepared and delivered into primary rat neurons for knockdown of gene expression. Primary rat fetal neurons were scratched to simulate the injury of central nervous system
Ashok Aspatwar et al.
PloS one, 10(7), e0134263-e0134263 (2015-07-29)
Carbonic anhydrase related proteins (CARPs) X and XI are highly conserved across species and are predominantly expressed in neural tissues. The biological role of these proteins is still an enigma. Ray-finned fish have lost the CA11 gene, but instead possess
Hao Li et al.
Environmental pollution (Barking, Essex : 1987), 188, 153-158 (2014-03-07)
Iron is rich in soils, and is recently reported to form stable complexes with organic free radicals, generating environmentally persistent free radicals (EPFRs). The observation may challenge the common viewpoint that iron is an effective catalyst to facilitate the degradation
Kathryn M Chepiga et al.
Organic letters, 15(24), 6136-6139 (2013-11-21)
A silica-supported dirhodium(II) tetraprolinate catalyst was synthesized in four steps from l-proline and used in a range of enantioselective transformations of donor/acceptor carbenoids. These include cyclopropenation, cyclopropanation, tandem ylide formation/[2,3] sigmatropic rearrangement, and a variety of combined C-H functionalization/Cope rearrangement
Fabrizio Fazzi et al.
Journal of immunology (Baltimore, Md. : 1950), 192(8), 3837-3846 (2014-03-14)
Macrophages play a fundamental role in innate immunity and the pathogenesis of silicosis. Phagocytosis of silica particles is associated with the generation of reactive oxygen species (ROS), secretion of cytokines, such as TNF, and cell death that contribute to silica-induced
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