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204757
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关键词:'204757'
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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
Chung-Hsin Wu et al.
Environmental technology, 34(17-20), 2513-2519 (2014-02-18)
This study synthesized a TiO2/carbon nanotubes (CNTs) composite via the sol-gel method. The surface characteristics of the TiO2/CNTs composite were determined by X-ray diffraction, transmission electron microscopy, specific surface area analyser, ultraviolent (UV)-vis spectroscopy, X-ray photoelectron spectroscopy and Raman spectrometer.
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
Janna Freitag et al.
Chemphyschem : a European journal of chemical physics and physical chemistry, 16(12), 2670-2679 (2015-06-30)
The photocatalytic properties of titanium dioxide (TiO2 ) layers on different metal plates are investigated. The metal-semiconductor interface can be described as a Schottky contact, and is part of a depletion layer for the majority carriers in the semiconductor. Many
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
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
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
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
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)
Eşref Demir et al.
Environmental research, 136, 300-308 (2014-12-03)
The in vitro genotoxic and the soft-agar anchorage independent cell transformation ability of titanium dioxide nanoparticles (nano-TiO2) and its microparticulated form has been evaluated in human embryonic kidney (HEK293) and in mouse embryonic fibroblast (NIH/3T3) cells. Nano-TiO2 of two different
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
David J Burke et al.
International journal of molecular sciences, 16(10), 23630-23650 (2015-10-09)
In this study, we investigated the effect of positively and negatively charged Fe₃O₄ and TiO₂ nanoparticles (NPs) on the growth of soybean plants (Glycine max.) and their root associated soil microbes. Soybean plants were grown in a greenhouse for six
Roberta Tassinari et al.
Nanotoxicology, 8(6), 654-662 (2013-07-10)
The study explored possible reproductive and endocrine effects of short-term (5 days) oral exposure to anatase TiO2 nanoparticles (0, 1, 2 mg/kg body weight per day) in rat. Nanoparticles were characterised by scanning electron microscopy (SEM) and transmission electron microscopy
E Albiter et al.
Journal of nanoscience and nanotechnology, 13(7), 4943-4948 (2013-08-02)
Noble metals deposited on TiO2 act as electron traps facilitating electron-hole separation and promoting the interfacial electron transfer process. In particular, silver nanoparticles have the ability to absorb visible light due to localized surface plasmon resonance. Here we report a
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
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
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
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
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
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
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
Xuyang Liu et al.
Environmental pollution (Barking, Essex : 1987), 184, 570-578 (2013-11-05)
Surface transformation can affect the stability, reactivity, and toxicity of titanium dioxide (TiO2) nanoparticles (NPs) in water environments. Herein, we investigated the release kinetics of Si impurity frequently introduced during NP synthesis and the resulting effect on TiO2 NP transformation
Daqing Wei et al.
Materials science & engineering. C, Materials for biological applications, 33(7), 4118-4125 (2013-08-06)
Porous titanium was prepared by pressureless sintering of titanium beads with diameters of 100, 200, 400 and 600 μm. The results indicated that the mechanical properties of porous titanium changed significantly with different bead diameters. Plastic deformations such as necking
Olga Wiens et al.
PloS one, 9(7), e103821-e103821 (2014-08-01)
The invasion of Theileria sporozoites into bovine leukocytes is rapidly followed by the destruction of the surrounding host cell membrane, allowing the parasite to establish its niche within the host cell cytoplasm. Theileria infection induces host cell transformation, characterised by
Yang Zhang et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 960, 52-58 (2014-05-03)
A novel TiO2/diatomite composite (TD) was prepared and then characterized by scanning electron microscope (SEM) and Fourier Transform Infrared (FTIR). The results of SEM showed that after modification, the porous surface of diatomite was covered with TiO2. Both diatomite and
Stephan Brosillon et al.
Chemosphere, 109, 173-179 (2014-03-13)
This study reports on the first assessment of the treatment of sediments contaminated by organotin compounds using heterogeneous photocatalysis. Photocatalysis of organotins in water was carried out under realistic concentration conditions (μgL(-1)). Degradation compounds were analyzed by GC-ICP-MS; a quasi-complete
Jianye Song et al.
Journal of nanoscience and nanotechnology, 14(6), 4649-4654 (2014-04-18)
A single-source ZnTi-layered double hydroxide precursor was used to prepare single phase Zn2TiO4. This approach involves two steps: the calcination of a ZnTi-layered double hydroxide precursor and selective leaching zinc oxide from the resultant calcined products. The materials were characterized
Stanely Makumire et al.
Toxicology letters, 227(1), 56-64 (2014-03-19)
Nanoparticles that are made from zinc and titanium oxide have found widespread applications, including their use in sunscreens. However, there is little information regarding their effects on immune cells. In the current study, we synthesized charge stabilized and "ligand free"
Paul A Carpenter et al.
Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation, 21(7), 1167-1187 (2015-04-04)
The 2006 National Institutes of Health (NIH) Consensus paper presented recommendations by the Ancillary Therapy and Supportive Care Working Group to support clinical research trials in chronic graft-versus-host disease (GVHD). Topics covered in that inaugural effort included the prevention and
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