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Showing 1-30 of 173 results for "248576" within Papers
Sana Thabet et al.
Applied and environmental microbiology, 80(24), 7527-7535 (2014-09-28)
We have investigated the antimicrobial effects of photocatalysis on the yeast model Saccharomyces cerevisiae. To accurately study the antimicrobial mechanisms of the photocatalytic process, we focused our investigations on two questions: the entry of the nanoparticles in treated cells and
Swayamprava Dalai et al.
Aquatic toxicology (Amsterdam, Netherlands), 152, 139-146 (2014-04-24)
The extensive environmental exposure of engineered metal oxide nanoparticles (NPs) may result in their bioaccumulation in aquatic organisms leading to their biotransfer in a food chain through various routes in a freshwater ecosystem. The present study focuses on the possible
Henriqueta Louro et al.
Environmental and molecular mutagenesis, 55(6), 500-509 (2014-03-05)
Titanium dioxide (TiO2 ) nanomaterials (NMs) are widely used in a diversity of products including cosmetics, pharmaceuticals, food, and inks, despite uncertainties surrounding the potential health risks that they pose to humans and the environment. Previous studies on the genotoxicity
E-M Kim et al.
Journal of nanoscience and nanotechnology, 13(12), 8325-8330 (2013-11-26)
There are no data available on the behavioural effects of centrally administered nanoparticles in freely moving intact mammals. Consequently, in the current study male Sprague-Dawley rats were trained to respond under an alternating-lever cyclic-ratio (ALCR) schedule of food reinforcement. Under
Friederike Eisenächer et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 88(3), 778-786 (2014-08-03)
Gastroretentive drug delivery systems are retained in the stomach for a sufficient time interval, releasing the drug in a controlled manner. According to literature, the floating principle is the most frequently used formulation approach for gastric retention. However, many publications
G He et al.
Cell proliferation, 47(3), 258-266 (2014-04-18)
To improve efficacy of current titanium and its alloys, in bioactivity and speed of osseointegration, of orthopaedic implants. A novel triple-layered functional graded coating, consisting of a porous hydroxyapatite (HA) outermost layer, fluoro-HA (FHA) intermediate layer and titanium oxide (TiO2
Nikiwe Mhlanga et al.
Journal of nanoscience and nanotechnology, 14(6), 4269-4277 (2014-04-18)
This study reports the synthesis, characterisation and thermal properties of polylactide (PLA)/titanium dioxide nanoparticles (TiO2 NPs) composites using the sol-gel method. The percentage weight of TiO2 NP sol was varied from 3, 8, 11 and 14. The synthesised composites were
V Bjerre-Harpøth et al.
Journal of dairy science, 98(12), 8581-8596 (2015-10-12)
Our objective was to investigate the quantitative and qualitative effects of propylene glycol (PG) allocation on postpartum adipose tissue mobilization in over-conditioned Holstein cows. Nine ruminally cannulated and arterially catheterized cows were, at parturition, randomly assigned to a ruminal pulse
P F Du et al.
Journal of nanoscience and nanotechnology, 14(6), 4164-4169 (2014-04-18)
Novel TiO2 nanoparticles/nanofibers (NPs/NFs) bilayered nano-composite photoanode film for dye-sensitized solar cells (DSSCs) was fabricated through the combination of spin-coating and electrospinning. The NPs and NFs layers have complementary roles. The underlaid spin-coated NPs layer provides the photoanode film with
Joanna Piasecka-Zelga et al.
Journal of occupational health, 57(3), 275-284 (2015-03-20)
Many employees working outside are exposed to the harmful effects of UV radiation. A growing problem is also sensitization to textile materials and allergic reactions to active compounds. Groups of inorganic UV blockers with nanoparticles may provide superior properties over
Jeffrey R Johnson et al.
PLoS computational biology, 11(8), e1004362-e1004362 (2015-08-28)
The African clawed frog Xenopus laevis is an important model organism for studies in developmental and cell biology, including cell-signaling. However, our knowledge of X. laevis protein post-translational modifications remains scarce. Here, we used a mass spectrometry-based approach to survey
Laura Canesi et al.
Aquatic toxicology (Amsterdam, Netherlands), 153, 53-65 (2013-12-18)
Despite the growing concern over the potential biological impact of nanoparticles (NPs) in the aquatic environment, little is known about their interactions with other pollutants. The bivalve Mytilus sp, largely utilized as a sentinel for marine contamination, has been shown
Minyong Eom et al.
Journal of nanoscience and nanotechnology, 13(5), 3742-3746 (2013-07-19)
Multilayered titanate nanotubes (TNTs) has been considered as a candidate for lithium ion battery anode material. However, it has a problem of high irreversible capacity due to trapped lithium ions in the interlayer space. To solve this problem, an attempt
The reintroduction of an effective cavity liner.
Randy S Weiner
Dentistry today, 32(7), 136-137 (2013-08-10)
Zhengxin Gao et al.
Carbohydrate polymers, 128, 24-31 (2015-05-26)
A composite filter paper with super-hydrophobicity was obtained by adhering micro/nano structure of amorphous titanium dioxide on the filter paper surface with modifying low surface energy material. By virtue of the coupling agent, which plays an important part in bonding
Yun-Geon Lee et al.
Journal of toxicology and environmental health. Part A, 78(3), 185-195 (2014-12-17)
The evaluation of the potential of nanoparticles (NP) for adsorbing biomolecules and use of control approaches are important for accurate presentation of in vitro analytical data. In this study, seven types of NP including carbon black (CB), cerium dioxide (CeO2)
Ki-Tae Kim et al.
Bulletin of environmental contamination and toxicology, 93(4), 456-460 (2014-05-23)
Aquatic toxicity of titanium dioxide nanoparticles (TiO2 NPs) to Daphnia magna was characterized using a completely stirred bioassay system intended to keep particles in suspension thereby maintaining a consistent exposure. The 48-h LC50 was 4.5 mg/L TiO2 NPs, whereas LC50
Tomas Fried et al.
Sensors (Basel, Switzerland), 19(15) (2019-07-31)
On the Sellafield site there are several legacy storage tanks and silos containing sludge of uncertain properties. While there are efforts to determine the chemical and radiological properties of the sludge, to clean out and decommission these vessels, the physical
D M Rivera-Chacon et al.
Journal of biomedical nanotechnology, 9(6), 1092-1097 (2013-07-19)
Improvements in osteoconduction of implant biomaterials require focusing on the bone-implant interface, which is a complex multifactorial system. Surface topography of implants plays a crucial role at this interface. Nanostructured surfaces have been shown to promote serum protein adsorption and
Tae-Yeon Oh et al.
Journal of nanoscience and nanotechnology, 13(5), 3491-3494 (2013-07-19)
This work studies the effect of post annealing of pentacene on a flexible substrate through the examination of electrical properties and surface morphologies. It is confirmed that the best performance of devices is achieved when the post annealing temperature is
W L Lü et al.
Cell proliferation, 48(1), 95-104 (2014-12-19)
To investigate effects of TiO2 nanotubes of different diameters on J744A.1 macrophage behaviour, secretion and expression of pro-inflammatory cytokines and chemokines. Macrophage-like J744A.1 cells were cultured on three types of Ti surface: mechanically polished titanium plus 30 and 80 nm
Yong Ho Kim et al.
Journal of nanobiotechnology, 12, 47-47 (2014-11-27)
Although engineered nanomaterials (ENM) are currently regulated either in the context of a new chemical, or as a new use of an existing chemical, hazard assessment is still to a large extent reliant on information from historical toxicity studies of
Jun Seong Lee et al.
Journal of nanoscience and nanotechnology, 13(5), 3685-3689 (2013-07-19)
(Sr, Ca)2SiO4:Eu2+ nanopowders were prepared by a co-precipitation method, and then the effects of Ca2+ ions on the structural and luminescent properties were investigated. The pure Sr2SiO4:Eu2+ powders were perfectly composed of the beta-phase, whereas the substitution of Ca2+ ions
Yanyu Zhao et al.
Nature communications, 11(1), 5355-5355 (2020-10-25)
Water and lipids are key participants in many biological processes, but there are few non-invasive methods that provide quantification of these components in vivo, and none that can isolate and quantify lipids in the blood. Here we develop a new
Cédric Weber et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(16), 5790-5795 (2014-04-11)
We carry out a first-principles atomistic study of the electronic mechanisms of ligand binding and discrimination in the myoglobin protein. Electronic correlation effects are taken into account using one of the most advanced methods currently available, namely a linear-scaling density
Fujiao Song et al.
Journal of environmental sciences (China), 25(3), 554-560 (2013-08-08)
TiO2 nanotubes (TiNT) were prepared by a hydrothermal treatment and modified by three kinds of amines, namely ethylenediamine, polyetherimide and tetraethylenepentamine (TEPA), to study their CO2 adsorption properties from gas streams. The resultant samples were characterized by X-ray diffraction, transmission
Kwi-Dug Yun et al.
Journal of nanoscience and nanotechnology, 13(6), 3864-3867 (2013-07-19)
This study examined the bone response to titanium dioxide nanotube modified implants. A total of 24 implants were placed in the femur of 4 beagles. Before placement, screw-shaped implants were classified into 3 groups; machined surface (group M), titanium dioxide
Chao-Yin Kuo et al.
Environmental technology, 35(13-16), 1851-1857 (2014-06-25)
In this study, TiO2/zeolite (TZ)-based composite was utilized to degrade bisphenol A (BPA) under ultraviolet (UV) irradiation. The effects of the TiO2 and Cu2O doses in TZ and Cu2O/TiO2/zeolite (CTZ) on the rate of BPA removal were identified, respectively. The
Yong Chen et al.
Chemosphere, 113, 48-55 (2014-07-30)
The interlayer of Sb-doped SnO2 (SnO2-Sb) and TiO2 nanotubes (TiO2-NTs) on Ti has been introduced into the PbO2 electrode system with the aim to reveal the mechanism of enhanced electrochemical performance of TiO2-NTs/SnO2-Sb/PbO2 electrode. In contrast with the traditional Ti/SnO2-Sb/PbO2
Yuka Suzuki et al.
Toxicology and applied pharmacology, 278(1), 16-25 (2014-04-22)
Metal oxide nanoparticles are widely used in industry, cosmetics, and biomedicine. However, the effects of exposure to these nanoparticles on the cardiovascular system remain unknown. The present study investigated the effects of nanosized TiO2 and ZnO particles on the migration
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