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" no prazo de Papéis
Shashikant P Patole et al.
Journal of nanoscience and nanotechnology, 13(11), 7413-7417 (2013-11-20)
Transparent conducting films (TCF) made up from carbon nanotubes (CNTs) have a tremendous potential in replacing the indium tin oxide films. Compare to single wall CNTs multiwall CNTs are more metallic and are more suitable candidate for the TCF. In
Pooja Garg et al.
The Journal of oral implantology, 40(6), 649-654 (2014-12-17)
Desired retrievability of cemented implant-supported fixed prosthesis makes the retentive strength of cementing agents an important consideration. The aim of the study was to evaluate the retentiveness of purposely designed implant cement and compare its retentiveness with dental cements that
C Syburra et al.
Ukrains'kyi biokhimichnyi zhurnal (1999 ), 71(3), 112-115 (1999-12-28)
It is well known that brain and nervous system cells are prone to oxidative damage because of their relatively low content of antioxidants, especially enzymatic ones, and of the high levels of both membrane polyunsaturated fatty acids (PUFA) and iron
Xueting Wang et al.
Environmental pollution (Barking, Essex : 1987), 195, 31-38 (2014-09-10)
The cotransport of multi-walled carbon nanotubes (MWCNTs) and nanoscaled titanium dioxide (nano-TiO2) in porous media were investigated in 1 and 10 mM NaCl at both pH 5 and 7. Nano-TiO2 decreased MWCNTs transport under all conditions. The increased MWCNTs deposition at
A Verma et al.
Chemosphere, 109, 7-13 (2014-05-31)
The investigation presents the observations on the use of cement beads for the immobilization of TiO2 for the degradation of herbicide isoproturon. The immobilized system was effective in degrading and mineralizing the herbicide for continuous thirty cycles without losing its
Hudson C Polonini et al.
Aquatic toxicology (Amsterdam, Netherlands), 154, 58-70 (2014-05-28)
The interaction between live organisms and micro- or nanosized materials has become a current focus in toxicology. As nanosized barium titanate has gained momentum lately in the medical field, the aims of the present work are: (i) to assess BT
Xilong Wang et al.
Environmental pollution (Barking, Essex : 1987), 194, 31-37 (2014-08-05)
Dissolved organic matter (DOM) may alter the sorption of hydrophobic organic contaminants (HOC) to metal oxide nanoparticles (NPs), but the role of DOM and NP types is poorly understood. Here, phenanthrene sorption was quantified on four types of nano-TiO2 (three
Mao-Xiang Jing et al.
Journal of nanoscience and nanotechnology, 13(7), 4949-4953 (2013-08-02)
The core-shell nano-TiO2/Al2O3/NiFe2O4 microparticles of 5-8 microm were prepared by the heterogeneous precipitation followed by calcination treatment. The morphologies, structure, crystalline phase, and magnetic property were characterized by optical biomicroscopy (OBM), scanning electron microscopy (SEM), X-ray diffractometry (XRD) and vibrating
Katarzyna Gurzawska et al.
Journal of biomedical nanotechnology, 8(6), 1012-1024 (2012-10-04)
Long-term stability of titanium implants are dependent on a variety of factors. Nanocoating with organic molecules is one of the method used to improve osseointegration. Nanoscale modification of titanium implants affects surface properties, such as hydrophilicity, biochemical bonding capacity and
J-M Serot et al.
Journal of neurology, neurosurgery, and psychiatry, 76(11), 1585-1587 (2005-10-18)
Homocysteine may be involved in the pathogenesis of late onset Alzheimer's disease. It is implicated in the metabolism of several important pathways in the brain. Methylmalonic acid (MMA) is related to the metabolism of branched chained amino acids and fatty
Margaret Dawson et al.
Journal of nanoscience and nanotechnology, 13(7), 5126-5133 (2013-08-02)
Anatase TiO2 is a promising photocatalyst due to its chemical stability, non-toxic characteristics, notable UV light absorption as well as photo-corrosion resistance and oxidative properties. Surface area and TiO2 dispersion quality are important factors that affect photoactivity of TiO2:SiO2 nanocomposites.
Wei Dong et al.
Journal of nanoscience and nanotechnology, 13(10), 6782-6786 (2013-11-20)
Micro-porous titanium is coated with silver nanoparticles by using a simple chemical reduction method that exhibits excellent antibacterial ability. Scanning electron microscopy (SEM) shows that the silver nanoparticles with average sizes of about 100 nm are formed homogeneously on the
R Khataee et al.
Journal of nanoscience and nanotechnology, 13(7), 5109-5114 (2013-08-02)
In the present study, self-cleaning and mechanical properties of white Portland cement by addition of commercial available TiO2 nanoparticles with the average particle size of 80 nm were investigated. X-ray diffraction (XRD), transmission electron microscopy (TEM) and BET were used
Jian-ping Jia et al.
Chinese medical journal, 117(8), 1161-1164 (2004-09-14)
An important aspect of Alzheimer's disease (AD) is loss or impairment of cholinergic neurons. It is controversial whether there is a similar cholinergic impairment and cerebral deficit of acetylcholine (ACh) in the case of vascular dementia (VD). The purpose of
David B Warheit
Toxicology letters, 220(2), 193-204 (2013-04-23)
Due to its multifunctional applications, titanium dioxide particles have widespread use in commerce. The particle-types function as sources of pigment color, in food products, anti-bacterial components, ultraviolet radiation scavengers, catalysts, as well as in cosmetics. Because of its inherent properties
Klas Gustafson et al.
Acta orthopaedica, 85(4), 348-354 (2014-06-17)
Metal-on-metal (MOM) total hip arthroplasties were reintroduced because of the problems with osteolysis and aseptic loosening related to polyethylene wear of early metal-on-polyethylene (MOP) arthroplasties. The volumetric wear rate has been greatly reduced with MOM arthroplasties; however, because of nano-size
M A Lovell et al.
Archives of neurology, 58(3), 392-396 (2001-03-20)
Markers of oxidative stress are increased in cerebrospinal fluid (CSF) of patients with Alzheimer disease (AD), although none of those reported are appropriate diagnostic markers because of the overlap between patients with AD and control subjects. To determine the ratio
MoonHee Kim et al.
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 146(1), 119-123 (2014-07-01)
Molar uprighting is an important adjunctive treatment in orthodontics: repositioning the tilted molar eliminates the potentially pathologic condition and simplifies the ultimate restorative procedure. Although various methods for molar uprighting have been applied successfully, they still have some limitations and
Jongtaek Lee et al.
Journal of nanoscience and nanotechnology, 13(11), 7430-7433 (2013-11-20)
Beta-carotene was inserted into single-walled carbon nanotubes (SWCNTs) by using the encapsulation method in a solution phase, and the energy transfer process was studied under irradiation of visible light. The encapsulation of beta-carotene inside SWCNTs was confirmed by ultraviolet (UV)/visible
Study of a TiO2 photocatalytic coating for use in plasma catalysis.
K Van Wesenbeeck et al.
Communications in agricultural and applied biological sciences, 78(1), 227-233 (2013-07-24)
M Savabieasfahani et al.
Environmental monitoring and assessment, 187(1), 4127-4127 (2014-12-03)
Anthropogenic release of pollutants into the environment is especially harmful to growing fetuses and young children. These populations are at an increased risk of damage because exposure to pollutants during critical periods of development can cause many impairments. Children's exposure
Collin D Kraus et al.
American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics, 145(5), 655-666 (2014-05-03)
The purpose of this study was to evaluate the biologic response of dentoalveolar bone to archwire expansion with light-to-moderate continuous forces. With a split-mouth experimental design, the maxillary right second premolars of 7 adult male dogs were expanded for 9
Shitu Jindal et al.
The Journal of oral implantology, 40 Spec No, 347-355 (2014-07-16)
This investigation was carried out to study the effect of a novel process of surface modification, surface nanostructuring by ultrasonic shot peening, on osteoblast proliferation and corrosion behavior of commercially pure titanium (c p-Ti) in simulated body fluid. A mechanically
A Kurbad et al.
International journal of computerized dentistry, 16(2), 125-141 (2013-08-13)
This article presents two novel options for lithium-disilicate restorations supported by single-tooth implants. By using a Ti-Base connector, hybrid abutments and hybrid abutment crowns can be fabricated for different implant systems. The latter option in particular is an interesting new
Mingjie Liu et al.
Nature, 517(7532), 68-72 (2015-01-06)
Machine technology frequently puts magnetic or electrostatic repulsive forces to practical use, as in maglev trains, vehicle suspensions or non-contact bearings. In contrast, materials design overwhelmingly focuses on attractive interactions, such as in the many advanced polymer-based composites, where inorganic
Lars L Hermansen et al.
Acta orthopaedica, 86(1), 127-133 (2014-09-02)
The anti-osteoporotic drug raloxifene reduces the risk of vertebral fractures by increasing bone mass density. We investigated whether raloxifene offers any benefits in augmenting early fixation of orthopedic implants in the setting of impaction bone grafting. 24 non-weight-bearing grafted gap
Peter Komlosi et al.
Journal of neurosurgery. Spine, 22(1), 34-38 (2014-11-08)
Monoenergetic imaging with dual-energy CT has been proposed to reduce metallic artifacts in comparison with conventional polychromatic CT. The purpose of this study is to systematically evaluate and define the optimal dual-energy CT imaging parameters for specific cervical spinal implant
M L Selley et al.
Neurobiology of aging, 23(3), 383-388 (2002-04-18)
There is evidence that increased blood concentrations of homocysteine may be a risk factor for Alzheimer's disease. (E)-4-hydroxy-2-nonenal (HNE) is a neurotoxic product of lipid peroxidation that is increased in the ventricular fluid and brains of patients with Alzheimer's disease.
Toshihiro Fujita et al.
Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology, 111(12), 2311-2318 (2014-12-09)
An 89-year-old man was admitted to our hospital for thorough investigation of refractory diabetes mellitus, which revealed primary squamous cell carcinoma of the duodenum. After two courses of chemotherapy, follow-up esophagoduodenogastroscopy and duodenal biopsy showed no evidence of tumor. No
A Moser et al.
Journal of the neurological sciences, 131(2), 183-189 (1995-08-01)
We could identify the MPTP-like compound and isoquinoline derivative N-methyl-norsalsolinol (2-MDTIQ) in cerebrospinal fluid (CSF) of patients with Parkinson's disease. The presence of 2-MDTIQ negatively correlated with the disease duration. In order to study the relationship between presence of 2-MDTIQ
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