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N Urien et al.
Environmental pollution (Barking, Essex : 1987), 203, 22-30 (2015-04-08)
Metals bioaccumulated in aquatic organisms are considered to be a good indicator of bioavailable metal contamination levels in freshwaters. However, bioaccumulation depends on the metal, the species, and the water chemistry that influences metal bioavailability. In the laboratory, a kinetic
Erik J Sheets et al.
Nanoscale, 7(45), 19317-19323 (2015-11-05)
The solution-based synthesis of nanoscale earth-abundant semiconductors has the potential to unlock simple, scalable, and tunable material processes which currently constrain development of novel compounds for alternative energy devices. One such promising semiconductor is zinc tin phosphide (ZnSnP2). We report
Donald A Robinson et al.
ACS nano, 9(7), 7583-7595 (2015-07-15)
An integrated microfluidic/magnetophoretic methodology was developed for improving signal response time and detection limits for the chronoamperometric observation of discrete nanoparticle/electrode interactions by electrocatalytic amplification. The strategy relied on Pt-decorated iron oxide nanoparticles which exhibit both superparamagnetism and electrocatalytic activity
Maria Diez-Ortiz et al.
Environmental pollution (Barking, Essex : 1987), 203, 191-198 (2015-04-26)
This study investigated if standard risk assessment hazard tests are long enough to adequately provide the worst case exposure for nanomaterials. This study therefore determined the comparative effects of the aging on the bioavailability and toxicity to earthworms of soils
Tina Van Regenmortel et al.
Environmental toxicology and chemistry, 34(7), 1597-1608 (2015-03-17)
Although it is increasingly recognized that biotic ligand models (BLMs) are valuable in the risk assessment of metals in aquatic systems, the use of 2 differently structured and parameterized BLMs (1 in the United States and another in the European
Emmie N M Ho et al.
Drug testing and analysis, 7(1), 21-30 (2014-09-27)
Cobalt is a well-established inducer of hypoxia-like responses, which can cause gene modulation at the hypoxia inducible factor pathway to induce erythropoietin transcription. Cobalt salts are orally active, inexpensive, and easily accessible. It is an attractive blood doping agent for
Roghayeh Imani et al.
Nanoscale research letters, 10(1), 441-441 (2015-11-18)
The applications of zinc oxide (ZnO) nanowires (NWs) in implantable wireless devices, such as diagnostic nanobiosensors and nanobiogenerators, have recently attracted enormous attention due to their unique properties. However, for these implantable nanodevices, the biocompatibility and the ability to control the
Juan J Pinto et al.
Talanta, 142, 84-89 (2015-05-25)
During the last decade, hollow fiber liquid phase micro-extraction (HF-LPME) has become an attractive alternative in sample treatment for the analysis of trace metals in seawater. If compared with other similar methodologies, its main advantages are associated to a higher
Michael S Madejczyk et al.
PloS one, 10(5), e0127327-e0127327 (2015-05-21)
U.S. Service Members and civilians are at risk of exposure to a variety of environmental health hazards throughout their normal duty activities and in industrial occupations. Metals are widely used in large quantities in a number of industrial processes and
Hao Ran Geng et al.
Analytical and bioanalytical chemistry, 407(29), 8803-8812 (2015-09-28)
A new surface molecularly imprinted polymer (MIP) based on nano-TiO2 was developed using propazine (Pro) as a template molecule, ethyleneglycol dimethacrylate (EGDMA) as a crosslinker, methacrylic acid (MAA) as a functional monomer, and 2,2'-azobis (isobutyronitrile) (AIBN) as an initiator. Structures
Angela Kaltenbach et al.
Analytical and bioanalytical chemistry, 407(11), 3093-3102 (2014-12-19)
Gravimetrically prepared mono-elemental reference solutions having a well-known mass fraction of approximately 1 g/kg (or a mass concentration of 1 g/L) define the very basis of virtually all measurements in inorganic analysis. Serving as the starting materials of all standard/calibration solutions, they
Keisuke Sato et al.
Nanoscale, 6(11), 6092-6101 (2014-05-03)
Inorganic/organic hybrid radial heterojunction solar cells that combine vertically-aligned n-type silicon nanowires (SiNWs) with poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) have great potential for replacing commercial Si solar cells. The chief advantage of such solar cells is that they exhibit higher absorbance for a
Vishal Mishra
Environmental technology, 36(24), 3194-3200 (2015-05-29)
The interchange of the protons with the cell wall-bound calcium and magnesium ions at the interface of solution/bacterial cell surface in the biosorption system at various concentrations of protons has been studied in the present work. A mathematical model for
Manoj Kumar et al.
Soft matter, 11(28), 5705-5711 (2015-06-18)
Addition of a branched polymer, polyethyleneimine, significantly alters the organization of a glycerol monooleate (GMO) lipid-water system. We present detailed data over a wide range of compositions (water content from 10 to 40%, relative to GMO and PEI fractions from
Sarah Theiner et al.
Metallomics : integrated biometal science, 7(8), 1256-1264 (2015-04-10)
The selection of drug candidates for entering clinical development relies on in vivo testing in (solid) tumor animal models. However, the heterogeneity of tumor tissue (e.g. in terms of drug uptake or tissue composition) is rarely considered when testing novel
Muthu Thiruvengadam et al.
Protoplasma, 252(4), 1031-1046 (2014-12-05)
Silver nanoparticles (AgNPs) use has been increased in recent years, which has potentially antagonistic effects on living organisms, including microbes, human, and plants. The physiological and molecular responses of AgNPs have been reported for several plants; however, the detailed mechanism
Rim Khlifi et al.
Environmental science and pollution research international, 22(18), 14136-14143 (2015-05-15)
Although the pathophysiology underlying nasal polyposis (NP) formation is not fully understood, systemic, local, and environmental factors appear to contribute to NP disease development. This study aimed to explore the relationship between metal blood levels and NP risk. To the
Yu Huang et al.
Luminescence : the journal of biological and chemical luminescence, 30(7), 1133-1138 (2015-02-27)
A novel and sensitive method for the determination of ceftazidime and cefepime in an active pharmaceutical ingredient (API) has been developed based on the fluorescence quenching of poly(ethylene glycol) (PEG)2000-capped carbon quantum dots (CQDs) prepared using a chemical oxidation method.
Rasmus I Jølck et al.
Advanced healthcare materials, 3(10), 1680-1687 (2014-04-16)
External beam radiation therapy relies on the ability to deliver high radiation doses to tumor cells with minimal exposure to surrounding healthy tissue. Advanced irradiation techniques, including image-guided radiation therapy (IGRT), rely on the ability to locate tumors to optimize
Nicole McGowan et al.
The Science of the total environment, 494-495, 177-186 (2014-07-22)
Microchemical analysis of otolith (calcified 'ear stones' used for balance and orientation) of fishes is an important tool for studying their environmental history and management. However, the spatial resolution achieved is often too coarse to examine short-term events occurring in
Ramiro J Zepeda et al.
Marine drugs, 12(9), 5055-5071 (2014-09-27)
Neosaxitoxin (NeoSTX) is a specific reversible blocker of voltage gated sodium channels on excitable cells. In the last decade, it has been tested in a number of interesting clinical trials, however there is still little information available on mammalian toxicity.
Nandita Sarker et al.
BioMed research international, 2015, 720341-720341 (2015-12-01)
The present study was undertaken to determine the heavy metal levels and the physicochemical parameters (pH, electrical conductivity (EC), and ash, moisture, and total sugar content) of honeys from Bangladesh. Three different floral honeys were investigated, namely, khalsi (Aegiceras corniculatum)
Tamzin A Blewett et al.
Ecotoxicology and environmental safety, 122, 159-170 (2015-08-04)
Nickel (Ni) is a metal of environmental concern, known to cause toxicity to freshwater organisms by impairing ionoregulation and/or respiratory gas exchange, and by inducing oxidative stress. However, little is known regarding how nickel toxicity is influenced by salinity. In
Célie Dupuy et al.
Marine pollution bulletin, 95(2), 634-645 (2014-12-17)
A multi-biomarker approach was developed to evaluate responses of European flounder (Platichthys flesus) in three contrasted estuaries over the English Channel: the Canche (pristine site), Tamar (heavy metals and PAHs contamination) and Seine (heavily pollution with a complex cocktail of
Yeun Kim et al.
Acta odontologica Scandinavica, 73(6), 427-432 (2014-11-12)
Micro-computed tomography (MCT) with alternative image reformatting techniques shows complex and detailed root canal anatomy. This study compared two-dimensional (2D) and 3D MCT image reformatting with standard tooth clearing for studying mandibular first molar mesial root canal morphology. Extracted human
Potential importance of transition metals in the induction of DNA damage by sperm preparation media.
R J Aitken et al.
Human reproduction (Oxford, England), 29(10), 2136-2147 (2014-08-22)
What are the mechanisms by which the preparation of spermatozoa on discontinuous density gradients leads to an increase in oxidative DNA damage? The colloidal silicon solutions that are commonly used to prepare human spermatozoa for assisted reproduction technology (ART) purposes
Katrin Loeschner et al.
Analytical and bioanalytical chemistry, 407(16), 4541-4554 (2015-04-16)
Hip replacements are used to improve the quality of life of people with orthopaedic conditions, but the use of metal-on-metal (MoM) arthroplasty has led to poor outcomes for some patients. These problems are related to the generation of micro- to
Srinivasa Reddy Mallampati et al.
Journal of hazardous materials, 297, 74-82 (2015-05-06)
This study assessed the synthesis and application of nano-Fe/Ca/CaO-based composite material for use as a separation and immobilizing treatment of dry soil contaminated by stable ((133)Cs) and radioactive cesium species ((134)Cs and (137)Cs). After grinding with nano-Fe/CaO, nano-Fe/Ca/CaO, and nano-Fe/Ca/CaO/[PO4]
Ludovic Jourdin et al.
Environmental science & technology, 49(22), 13566-13574 (2015-10-21)
High product specificity and production rate are regarded as key success parameters for large-scale applicability of a (bio)chemical reaction technology. Here, we report a significant performance enhancement in acetate formation from CO2, reaching comparable productivity levels as in industrial fermentation
Agnieszka Baran et al.
Ecotoxicology (London, England), 24(6), 1279-1293 (2015-06-11)
The aim of this study was to assess heavy metals mobility and toxicity in sediments collected from a dam reservoir in the conditions of intensive human impact by using chemical fractionation and a battery of bioassays. In the studies, the
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