显示 1-30 共 120 条结果 关于 "GF59430304"
Quanying Wang et al.
Environmental monitoring and assessment, 187(1), 4121-4121 (2014-11-20)
Accumulations of copper in orchard soils and fruit trees due to the application of Cu-based fungicides have become research hotspots. However, information about the sampling strategies, which can affect the accuracy of the following research results, is lacking. This study...
M Tajuddin Sikder et al.
Water environment research : a research publication of the Water Environment Federation, 86(4), 296-304 (2014-05-24)
Beta-cyclodextrin (beta-CD) cross-linked with epichlorohydrin to form water insoluble beta-cyclodextrin polymer (beta-CDP) has been shown to be an effective sorbent for sorption of organic particles, but the sorption of copper (Cu2+) in aqueous solutions by beta-CDP has not been conducted....
Norbert Ondo Zue Abaga et al.
Chemosphere, 113, 42-47 (2014-07-30)
In Burkina-Faso, urban vegetable agriculture is often characterized by urban solid waste fertilizer inputs containing heavy metals such as Cu and Cd. Thus, the relevance of surrounding urban vegetable plots with vetiver hedges to reduce environmental pollution by Cu and...
Sejal Shah et al.
Survey of ophthalmology, 59(1), 115-123 (2013-10-12)
The dense accumulation of copper in Descemet membrane and lens capsule is the characteristic manifestation of a circulating monoclonal antibody with strong affinity for copper. The overproduction of this monoclonal immunoglobulin may be associated with either multiple myeloma or a...
Vivien W W Bao et al.
Aquatic toxicology (Amsterdam, Netherlands), 157, 81-93 (2014-12-03)
Zinc pyrithione (ZnPT) is a widely used booster biocide in combination with copper (Cu) in antifouling paints as a substitute for tributyltin. The co-occurrence of ZnPT and Cu in coastal marine environments is therefore very common, and may pose a...
Copper rewired.
Nature, 508(7495), 150-150 (2014-04-12)
Amna I Dermish et al.
Expert review of medical devices, 10(4), 477-488 (2013-07-31)
Worldwide, 40% of all pregnancies are unintended. Widespread, over-the-counter availability of oral emergency contraception (EC) has not reduced unintended pregnancy rates. The EC visit presents an opportunity to initiate a highly effective method of contraception in a population at high...
Shaojuan Song et al.
Yi chuan = Hereditas, 36(12), 1261-1268 (2014-12-10)
Copper plays critical roles in biological system; however, it is toxic in excess. To identify novel genes involved in copper metabolism, we performed a whole genome-wide genetic screen in C. elegans model organism to search for mutants which are resistant...
Duygu Cagirdi et al.
Journal of AOAC International, 97(4), 1137-1142 (2014-08-26)
A simple and selective separation and preconcentration method was developed for the determination of Cu(ll) ions. This method is based on adsorption of Cu(ll) ions from aqueous solution on a bis(3-aminopropyl)amine modified silica gel column and flame atomic absorption spectrometric...
Xiaowen Xu et al.
Organic letters, 16(13), 3540-3543 (2014-06-17)
A novel straightforward synthesis of both symmetrical and unsymmetrical 2,4-disubstituted-1,3,5-triazines via aerobic copper-catalyzed cyclization of amidines with DMF as a one-carbon synthon has been developed. The presented method allows synthesizing the products that are currently inaccessible or challenging to prepare...
Zinc and copper toxicity in host defense against pathogens: Mycobacterium tuberculosis as a model example of an emerging paradigm.
Olivier Neyrolles et al.
Frontiers in cellular and infection microbiology, 3, 89-89 (2013-12-19)
Goldie Songra 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), 569-578 (2014-05-03)
The aim of this study was to compare the time to initial alignment and extraction space closure using conventional brackets and active and passive self-ligating brackets. One hundred adolescent patients 11 to 18 years of age undergoing maxillary and mandibular...
Geir Bjorklund
Acta neurobiologiae experimentalis, 73(2), 225-236 (2013-07-05)
Autism spectrum disorders (ASDs) are a group of developmental disabilities that can cause significant social, communication and behavioral challenges. Several studies have suggested a disturbance in the copper (Cu) and zinc (Zn) metabolism in ASDs. Zinc deficiency, excess Cu levels...
A Di Veroli et al.
Chemosphere, 112, 9-17 (2014-07-23)
Mouthpart deformities of Chironomus riparius larvae (Diptera) have been investigated to evaluate the toxic effects of contamination by heavy metals in the Genna Stream (Central Italy), situated in an area subjected to intensive swine farms (40000 heads). The livestock farming...
Jonas Duus Stevens Lekfeldt et al.
Environmental pollution (Barking, Essex : 1987), 194, 78-85 (2014-08-06)
Copper (Cu) is known to accumulate in agricultural soils receiving urban waste products as fertilizers. We here report the use of the leucine incorporation technique to determine pollution-induced community tolerance (Leu-PICT) to Cu in a long-term agricultural field trial. A...
Giuseppe Inesi et al.
The Biochemical journal, 463(2), 167-176 (2014-09-23)
Copper ATPases, in analogy with other members of the P-ATPase superfamily, contain a catalytic headpiece including an aspartate residue reacting with ATP to form a phosphoenzyme intermediate, and transmembrane helices containing cation-binding sites [TMBS (transmembrane metal-binding sites)] for catalytic activation...
Rupert Purchase
Science progress, 96(Pt 3), 213-223 (2013-11-20)
Wilson's disease (hepatolenticular degeneration) is a rare inherited autosomal recessive disorder of copper metabolism leading to copper accumulation in the liver and extrahepatic organs such as the brain and cornea. Patients may present with combinations of hepatic, neurological and psychiatric...
Economic geology. Seafloor mining plan advances, worrying critics.
Carolyn Gramling
Science (New York, N.Y.), 344(6183), 463-463 (2014-05-03)
Pablo Lozano et al.
Ecotoxicology and environmental safety, 104, 294-301 (2014-04-15)
There is a need to develop efficient tools to prevent damage to marine ecosystems due to pollution. Since microalgae play a key role in marine ecosystems, they are considered potentially useful for quick and sensitive toxicity bioassays. In this study...
Fabio Perlatti et al.
The Science of the total environment, 500-501, 91-102 (2014-09-14)
The potentially hazardous effects of rock wastes disposed at open pit in three different areas (Pr: Ore processing; Wr: Waste rock and Bd: Border) of an abandoned copper mine were evaluated in this study, with emphasis on acid drainage generation...
Jing Zheng et al.
Organic letters, 16(13), 3560-3563 (2014-06-25)
A Rh(III)-catalyzed selective coupling of N-methoxy-1H-indole-1-carboxamide and aryl boronic acids is reported. The coupling is mild and efficient toward diverse product formation, with selective C-C and C-C/C-N bond formation. Kinetic isotope effects studies were conducted to reveal a mechanism of...
Ewa Sitkiewicz et al.
Journal of molecular biology, 426(15), 2871-2885 (2014-05-27)
Oligomers formed by amyloid β (Aβ) peptide are widely believed to be the main neurotoxic agent in Alzheimer's disease. Studies discovered a broad variety of oligomeric forms, which display different levels of toxicity. Some of these forms may further assemble...
David L Choveaux et al.
Experimental parasitology, 148, 30-39 (2014-12-03)
Copper is an essential micronutrient for all living organisms as an important catalytic co-factor for key enzymes. In higher eukaryotes intracellular copper is distributed by copper metallochaperones. Copper chelators such as neocuproine and tetrathiomolybdate inhibit Plasmodium falciparum erythrocytic development, indicating...
Renée C Pompei-Reynolds 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(2), 215-226 (2014-08-03)
The manufacturing process for copper-nickel-titanium archwires is technique sensitive. The primary aim of this investigation was to examine the interlot consistency of the mechanical properties of copper-nickel-titanium wires from 2 manufacturers. Wires of 2 sizes (0.016 and 0.016 × 0.022...
Tao Zhang et al.
Chemosphere, 109, 1-6 (2014-05-31)
The development of more selective chelators for the washing of heavy metal contaminated soil is desirable in order to avoid excessive dissolution of soil minerals. Speciation and mobility of Cu, Zn, Pb, and Ni in a contaminated soil washed with...
A Gomiero et al.
Environmental pollution (Barking, Essex : 1987), 194, 262-271 (2014-08-29)
Trace metals and broad-spectrum antibiotic drugs are common environmental contaminants, the importance of which is increasing due to global climate change-related effects. In the present study, the biological model organism E. crassus was first acclimated to five temperatures, from 25 °C to...
Xiaolei Cao et al.
Environmental technology, 35(13-16), 1956-1961 (2014-06-25)
In this study, anaerobic granular sludge with sulphate-reducing bacteria (SRB) was applied to treat Cu2+-, SO4(2-) -containing wastewater in an expanded granular sludge bed reactor. The migration and enrichment of copper in anaerobic granular sludge were envaluated. By analysing the...
Hiroki Serizawa et al.
Organic letters, 16(13), 3456-3459 (2014-06-14)
The direct synthesis of pentafluoroethyl copper (CuC2F5) from a cuprate reagent and ethyl pentafluoropropionate as one of the most economical and useful pentafluoroethyl sources was accomplished. The advantages of this method are; all the reagents employed are low-cost and operationally...
Piotr Zabierowski et al.
Acta crystallographica. Section C, Structural chemistry, 70(Pt 7), 659-661 (2014-07-06)
The title compound, [Cu(C9H8BrClNO2)2], is a square-planar complex. The potentially tridentate dibasic 2-bromo-4-chloro-6-{[(2-hydroxyethyl)imino]methyl}phenolate ligand coordinates in a trans-bis fashion to the Cu(II) centre via the imine N and phenolate O atoms. The Cu(II) atom lies on the centre of inversion...
A Cristina S Rocha et al.
Ecotoxicology and environmental safety, 109, 152-160 (2014-09-07)
Metals are known to induce oxidative stress in plant cells. Antioxidant thiolic compounds are known to play an important role in plants׳ defence mechanisms against metal toxicity but, regarding salt marsh plants, their role is still very poorly understood. In...

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