Search Within
Applied Filters:
Palavra-chave:'326887'
Showing 1-30 of 153 resultados for "

326887

" within Papéis
Hideaki Matsumoto et al.
Plant science : an international journal of experimental plant biology, 185-186, 1-8 (2012-02-14)
Al inhibits root apex elongation with concomitant morphological injuries such as ruptures punctuated by the regions stained with Evans blue. The recovery can be investigated by transfer of Al-injured roots to a solution lacking Al. In the Al-injured root apex...
[Conductive composite nanomaterial with biocompatible matrix and multilayer carbon nanotubes].
L P Ichkitidze et al.
Meditsinskaia tekhnika, (2)(2), 11-15 (2013-06-26)
Billie Gould et al.
Molecular ecology, 23(24), 6058-6072 (2014-08-26)
Studies of the wild grass Anthoxanthum odoratum at the long-term Park Grass Experiment (PGE, Harpenden, UK) document a well-known example of rapid plant evolution in response to environmental change. Repeated fertilizer applications have acidified the soil in some experimental plots...
A S Waters et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(8), 1764-1772 (2013-04-13)
Acid mine drainage (AMD) has degraded water quality and ecology in streams on the Stockton Plateau, the site of New Zealand's largest open-cast coal mining operation. This has previously been attributed largely to the effects of acidity and elevated aluminium...
J R Walton
Journal of Alzheimer's disease : JAD, 35(1), 7-43 (2013-02-06)
The neuroanatomic specificity with which Alzheimer's disease (AD) progresses could provide clues to AD etiopathology. Magnetic resonance imaging studies of AD clinical progression have confirmed general conclusions from earlier studies of AD neuropathological progression wherein neurofibrillary tangle pathology was observed...
A V Dmitriev et al.
Ultrasonics, 54(3), 905-913 (2013-12-04)
The natural frequencies and distributions of displacement components for the surface vibrational modes in thin isotropic elastic disks are calculated. In particular, the research is focused on even solutions for low-lying resonant vibrations with large angular wave numbers. Several families...
Jose L Domingo
Journal of Alzheimer's disease : JAD, 10(2-3), 331-341 (2006-11-23)
Alzheimer's disease (AD) is characterized by the presence of neuritic plaques and neurofibrillary tangles in the brain. Although the causes of AD remain still unknown, it seems that certain environmental factors may be involved in the etiology and pathogenesis of...
Denis Mounier et al.
Ultrasonics, 54(1), 259-267 (2013-07-31)
The cross-section eigenmodes of micrometric cylinders were measured in the range of several tens of MHz to about 0.5 GHz. The vibrations were excited using subnanosecond laser pulses. The cross-section eigenmodes were simulated using finite element modeling in a 2D...
Arezoo Campbell
Journal of Alzheimer's disease : JAD, 10(2-3), 165-172 (2006-11-23)
Metals such as aluminum (Al), copper (Cu), zinc and iron have been implicated in the pathogenesis of Alzheimer's disease (AD). Because trace amounts of metals are present in the drinking water, there is a possibility for low-dose chronic exposure. Since...
G Toncev et al.
European journal of neurology, 9(3), 221-226 (2002-05-03)
Several findings suggest lower levels of serum uric acid in multiple sclerosis (MS) patients. The aim of this study is to investigate relationships of uric acid serum levels in relapse-remitting (RR) MS patients with clinical activity of disease and blood-brain...
Julian I Schroeder et al.
Nature, 497(7447), 60-66 (2013-05-03)
With the global population predicted to grow by at least 25 per cent by 2050, the need for sustainable production of nutritious foods is critical for human and environmental health. Recent advances show that specialized plant membrane transporters can be...
Wilson R Molina et al.
Urology, 83(4), 738-744 (2014-02-04)
To evaluate the association of preoperative noncontrast computed tomography stone characteristics, laser settings, and stone composition with cumulative holmium:yttrium-aluminum-garnet (Ho:YAG) laser time/energy. We retrospectively reviewed patients who underwent semirigid/flexible ureteroscopy and Ho:YAG laser lithotripsy (200 or 365 μm laser fiber;...
S R Mousavi et al.
The international journal of occupational and environmental medicine, 4(2), 80-86 (2013-04-10)
Contamination of water by toxic chemicals has become commonly recognized as an environmental concern. Based on our clinical observation in Mashhad, northeastern Iran, many people might be at risk of exposure to high concentrations of toxic heavy metals in water....
E L Bazarova et al.
Meditsina truda i promyshlennaia ekologiia, (1)(1), 18-21 (2013-06-22)
A purpose of this research is individual and group occupational risk evaluation at metallizers workplaces of titanium alloys production in the process of covering the titanium half-finished products with aluminum. The occupational risk has been estimated according to the hygienic...
Eric J B von Wettberg et al.
Molecular ecology, 23(24), 5931-5933 (2014-12-24)
Long-term ecological experiments provide unique opportunities to observe the effects of natural selection. The Park Grass Experiment at Rothamsted Experiment Station in Hertfordshire, UK, is the longest running ecological experiment that incorporates fertilization treatments and has been ongoing since 1856....
Beatrice Bocca et al.
Annali dell'Istituto superiore di sanita, 41(2), 197-203 (2005-10-26)
The haematic concentration of 26 metals and the oxidative damage in 60 patients (20 males and 40 females) affected by Alzheimer's disease and 44 healthy individuals (33 males and 11 females) were compared. In patients, the following significant (p <...
Yiyan Zhang et al.
Bulletin of environmental contamination and toxicology, 93(1), 78-83 (2014-03-13)
An enhanced Al(3+) tolerance has been observed in ethylene insensitive mutant ein2-1 and salicylic acid insensitive mutant npr1-1 of Arabidopsis. However, we found that the tolerant phenotype of ein2-1 and npr1-1 under Al stress was dependent on NPR and EIN...
P A LeWitt et al.
Neurology, 42(11), 2111-2117 (1992-11-01)
We used two analytic methods (a multichannel coulometric electrode array with high-performance liquid chromatography, and gas chromatography-mass spectrophotometry) to measure CSF dopamine (DA) and its metabolites in mildly affected, unmedicated subjects with Parkinson's disease (PD). The mean (+/- SD) concentration...
C E Shaw et al.
Journal of neurology, 242(2), 53-58 (1995-01-01)
Magnetic resonance imaging of multiple sclerosis (MS) patients often shows active inflammatory lesions despite clinical remission. No immunological marker of disease activity has been identified in these patients. Concentrations of neopterin, interleukin-2 (IL-2), soluble interleukin-2 receptor (sIL-2R) and tumour necrosis...
S Engelborghs et al.
Neurochemical research, 28(8), 1145-1150 (2003-07-02)
To study changes in amino acid metabolism and biogenic amines in Parkinson's disease, we set up a prospective study and measured biogenic amines, their main metabolites, and 22 different amino acids, in cerebrospinal fluid of Parkinson's disease patients (n =...
C A Shaw et al.
Immunologic research, 56(2-3), 304-316 (2013-04-24)
We have examined the neurotoxicity of aluminum in humans and animals under various conditions, following different routes of administration, and provide an overview of the various associated disease states. The literature demonstrates clearly negative impacts of aluminum on the nervous...
Juseok Lee et al.
Journal of biomedical nanotechnology, 9(2), 295-298 (2013-05-01)
Cell responses to surface and contact cell guidance are of great interest in bio-applications especially on nano- and micro scale features. Recently we showed selective cell responses on Al/Al2O3, bi-phasic nanowires (NWs). In this context, Al/Al2O3 NWs were synthesized by...
Chris J Arnold et al.
Nutrition reviews, 61(9), 306-310 (2003-10-14)
Parenteral nutrition (PN) is an essential component in the care of premature and ill infants. The incidence of parenteral nutrition-associated cholestasis (PNAC) ranges from 7.4 to 84%. One substance in PN solutions that has been implicated in PNAC is aluminum....
Jesper C Holst et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(22), 8819-8823 (2013-05-15)
Refractory inclusions [calcium-aluminum-rich inclusions, (CAIs)] represent the oldest Solar System solids and provide information regarding the formation of the Sun and its protoplanetary disk. CAIs contain evidence of now extinct short-lived radioisotopes (e.g., (26)Al, (41)Ca, and (182)Hf) synthesized in one...
Romain K Gherardi et al.
Immunology and allergy clinics of North America, 23(4), 699-712 (2004-02-03)
The authors conclude that the persistence of aluminum hydroxide at the site of intramuscular injection is a novel finding which has an exact significance that remains to be established fully. It seems mandatory to evaluate possible long-term adverse effects induced...
Y Miura
The Kurume medical journal, 47(4), 267-272 (2001-02-24)
Plasma beta-phenylethylamine (PEA) levels were determined in 27 patients with Parkinson's disease (PD) in order to evaluate its relation with the severity or clinical course of PD. The plasma PEA concentrations in PD patients were significantly lower (mean +/- SD...
John Savory et al.
Journal of Alzheimer's disease : JAD, 10(2-3), 135-144 (2006-11-23)
For four decades the controversial question concerning a possible role for aluminum neurotoxicity in contributing to the pathogenesis of Alzheimer's disease has been debated, and studies by different investigators have yielded contradictory results. The lack of sensitivity to aluminum neurotoxicity...
Anna Walter et al.
Neurobiology of aging, 25(10), 1299-1303 (2004-10-07)
Experimental and clinical studies give evidence for breakdown of membrane phospholipids during neurodegeneration. In the present study, we measured the levels of glycerophosphocholine (GPCh), phosphocholine (PCh), and choline, that is, water-soluble metabolites of phosphatidylcholine (PtdCho), in human cerebrospinal fluid (CSF)....
Jae Chun Lee et al.
Journal of nanoscience and nanotechnology, 13(11), 7561-7567 (2013-11-20)
Thin ZrO2/Al2O3 films that consisted of alternating monoclinic ZrO2 nanolayers and amorphous Al2O3 nanolayers were deposited on a tool steel substrate using Zr and Al cathodes in a cathodic arc plasma deposition system, and then oxidized at 600-900 degrees C...
Min-Chul Jun et al.
Journal of nanoscience and nanotechnology, 13(5), 3403-3407 (2013-07-19)
Transparent conducting oxide (TCO) materials with high transmittance and good electrical conductivity have been attracted much attention due to the development of electronic display and devices such as organic light emitting diodes (OLEDs), and dye-sensitized solar cells (DSSCs). Aluminum doped...
Página 1 de 6
Página 1 de 6