keyword
MENU ▼
Read by QxMD icon Read
search

nickel

keyword
https://www.readbyqxmd.com/read/27914349/effects-of-clay-minerals-hydroxides-and-timing-of-dissolved-organic-matter-addition-on-the-competitive-sorption-of-copper-nickel-and-zinc-a-column-experiment
#1
Yasser Refaey, Boris Jansen, John R Parsons, Pim de Voogt, Simone Bagnis, Adriaan Markus, Abdel-Hamid El-Shater, Abdel-Aziz El-Haddad, Karsten Kalbitz
Infiltration of heavy metal (HM) polluted wastewater can seriously compromise soil and groundwater quality. Interactions between mineral soil components (e.g. clay minerals) and dissolved organic matter (DOM) play a crucial role in determining HM mobility in soils. In this study, the influence of the timing of addition of DOM, i.e. concurrent with or prior to HMs, on HM mobility was explored in a set of continuous flow column experiments using well defined natural soil samples amended with goethite, birnessite and/or smectite...
November 30, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27914340/nickelocene-as-precursor-of-microporous-organometallic-derived-carbon-and-nickel-oxide-carbon-nanocomposite
#2
P González-García, D Arenas-Esteban, D Ávila-Brande, E Urones-Garrote, L C Otero-Díaz
Microporous flower-like and spherical carbon particles, made of graphene-like layers, have been obtained via chlorination of nickelocene (Ni(C5H5)2). Their mechanism of formation, in terms of morphology and micro-nanostructure, has been followed from 200 to 900°C. Conventional transmission electron microscopy and high-resolution-TEM observations allow determining that their structure is made of highly disordered graphene-like layers. The Raman spectrum of the high temperature sample exhibits the characteristics D and G bands...
November 10, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27912188/bacillus-flexus-strain-as-12-a-new-arsenic-transformer-bacterium-isolated-from-contaminated-water-resources
#3
Mohammad Ahmadi Jebeli, Afshin Maleki, Mohammad Ali Amoozegar, Enayatollah Kalantar, Hassan Izanloo, Fardin Gharibi
A total of 14 arsenic-resistant bacteria were isolated from an arsenic-contaminated travertine spring water in the central district of Qorveh county, Kurdistan Province, Iran. One of strains designated As-12 was selected for further investigation because of its ability to transform arsenic. The strain was identified by cultural, morphological and biochemical tests, and 16S rRNA gene sequencing. Finally, the growth characteristics of the isolate were investigated in a chemically defined medium which included varied ranges of environmental factors such as pH, temperature and salinity...
November 29, 2016: Chemosphere
https://www.readbyqxmd.com/read/27911010/screening-of-mercury-resistant-and-indole-3-acetic-acid-producing-bacterial-consortium-for-growth-promotion-of-cicer-arietinum-l
#4
Aatif Amin, Zakia Latif
Mercury resistant (Hg(R) ) bacteria were screened from industrial effluents and effluents-polluted rhizosphere soils near to districts Kasur and Sheikhupura, Pakistan. Out of 60 isolates, three bacterial strains, Bacillus sp. AZ-1, Bacillus cereus AZ-2, and Enterobacter cloacae AZ-3 showed Hg-resistance as 20 μg ml(-1) of HgCl2 and indole-3-acetic acid (IAA) production as 8-38 μg ml(-1) . Biochemical and molecular characterization of selected bacteria was confirmed by 16S ribotyping. Mercury resistant genes merA, merB, and merE of mer operon in Bacillus spp...
December 2, 2016: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/27910456/two-color-spatial-and-temporal-temperature-measurements-using-a-streaked-soft-x-ray-imager
#5
A S Moore, J Benstead, M F Ahmed, J Morton, T M Guymer, R Soufli, T Pardini, R L Hibbard, C G Bailey, P M Bell, S Hau-Riege, M Bedzyk, M J Shoup, S P Regan, T Agliata, R Jungquist, D W Schmidt, L B Kot, W J Garbett, M S Rubery, J W Skidmore, E Gullikson, F Salmassi
A dual-channel streaked soft x-ray imager has been designed and used on high energy-density physics experiments at the National Ignition Facility. This streaked imager creates two images of the same x-ray source using two slit apertures and a single shallow angle reflection from a nickel mirror. Thin filters are used to create narrow band pass images at 510 eV and 360 eV. When measuring a Planckian spectrum, the brightness ratio of the two images can be translated into a color-temperature, provided that the spectral sensitivity of the two images is well known...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910348/demonstration-of-imaging-x-ray-thomson-scattering-on-omega-ep
#6
Patrick X Belancourt, Wolfgang Theobald, Paul A Keiter, Tim J B Collins, Mark J Bonino, Pawel M Kozlowski, Sean P Regan, R Paul Drake
Foams are a common material for high-energy-density physics experiments because of low, tunable densities, and being machinable. Simulating these experiments can be difficult because the equation of state is largely unknown for shocked foams. The focus of this experiment was to develop an x-ray scattering platform for measuring the equation of state of shocked foams on OMEGA EP. The foam used in this experiment is resorcinol formaldehyde with an initial density of 0.34 g/cm(3). One long-pulse (10 ns) beam drives a shock into the foam, while the remaining three UV beams with a 2 ns square pulse irradiate a nickel foil to create the x-ray backlighter...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909964/oxidative-stress-and-biochemical-markers-of-endothelial-dysfunction-and-organ-damage-under-conditions-of-experimental-nonferrous-metal-intoxication
#7
F S Dzugkoeva, I V Mozhaeva, S G Dzugkoev, O I Margieva, A I Tedtoeva, M A Otiev
Chronic nickel intoxication caused by parenteral nickel chloride administration (0.5 mg/kg of body weight) to Wistar rats led to ROS generation inducing LPO in erythrocyte membranes and homogenates of renal, liver, and myocardial tissue. Superoxide dismutase (SOD) activity was inhibited, while catalase activity and ceruloplasmin concentration increased. LPO and its products disrupted nitric oxide production and reduced its bioavailability, which led to the development of endothelial dysfunction and impaired microcirculatory hemodynamics...
December 2, 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27908764/discovery-and-initial-optimization-of-alkoxyanthranilic-acid-derivatives-as-inhibitors-of-hcv-ns5b-polymerase
#8
Kyle Parcella, Andrew Nickel, Brett R Beno, Steven Sheriff, Changhong Wan, Ying-Kai Wang, Susan B Roberts, Nicholas A Meanwell, John F Kadow
Alkoxyanthranilic acid derivatives have been identified to inhibit HCV NS5B polymerase, binding in an allosteric site located at the convergence of the palm and thumb regions. Information from co-crystal structures guided the structural design strategy. Ultimately, two independent structural modifications led to a similar shift in binding mode that when combined led to a synergistic improvement in potency and the identification of inhibitors with sub-micromolar HCV NS5B binding potency.
November 22, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27908256/a-review-on-nano-antimicrobials-metal-nanoparticles-methods-and-mechanisms
#9
Edris Hoseinzadeh, Pouran Makhdoumi, Parisa Taha, John Stelling, Hooshyar Hossini, Mohammad Amjad Kamal, Ghulam Md Ashraf
Nanotechnology is a scientific and engineering technology conducted at the Nano-scale, such as in the fields of compound fabric manufacturing, food processing, agricultural processing, and engineering, as well as in medical and medicinal application. In recent decade, nanomaterial applications for antimicrobial works have been interested by many researchers. Available reports show that some of the metal oxide Nanoparticles including; Al2O3, TiO2, ZnO, CuO, Co3O4, In2O3, MgO, SiO2, ZrO2, Cr2O3, Ni2O3, Mn2O3, CoO, and Nickel oxide have toxicity toward several microorganisms and they could successfully kill numerous bacteria...
December 1, 2016: Current Drug Metabolism
https://www.readbyqxmd.com/read/27906784/a-biokinetic-model-for-systemic-nickel
#10
Dunstana R Melo, Richard W Leggett
The International Commission on Radiological Protection (ICRP) is updating its suite of reference biokinetic models for internally deposited radionuclides. This paper reviews data for nickel and proposes an updated biokinetic model for systemic (absorbed) nickel in adult humans for use in radiation protection. Compared with the ICRP's current model for nickel, the proposed model is based on a larger set of observations of the behavior of nickel in human subjects and laboratory animals and provides a more realistic description of the paths of movement of nickel in the body...
January 2017: Health Physics
https://www.readbyqxmd.com/read/27905588/phase-specific-dispersion-of-functional-nanoparticles-in-soft-nanocomposites-resulting-in-enhanced-electromagnetic-screening-ability-dominated-by-absorption
#11
Aishwarya V Menon, Giridhar Madras, Suryasarathi Bose
The effect of phase specific localisation of MWNTs (multiwalled carbon nanotubes) and magnetic FeNi (iron-nickel) alloy particles on bulk electrical conductivity and electromagnetic (EM) wave attenuation was investigated in biphasic co-continuous blends of PVDF/SMA (polyvinylidene fluoride/styrene maleic anhydride). It is envisaged that packing different functional nanoparticles in a given phase of a co-continuous blend can impede the charge transport phenomenon and the overall dispersion state. Therefore, phase specific localisation can facilitate the tuning of the functional properties in biphasic blends...
December 1, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27905283/comparative-analysis-of-serum-mineral-levels-and-parasite-load-in-goats-naturally-infected-with-gastrointestinal-nematodes
#12
Serap Ünübol Aypak, Süleyman Aypak, Hüseyin Voyvoda, Gülşen Güven, Evrim Dereli Fidan, Gamze Tosun, Mehmet Gültekin, Emrah Şimşek, Asude Gülçe Güler
OBJECTIVE: This study aimed to investigate the relationship between serum mineral levels and parasite load in Saanen (n=37) and Damascus (n=13) goats, which were all approximately 2 months pregnant and naturally infected with gastrointestinal nematodes. METHODS: To determine parasite concentration individually, fecal samples were taken from each goat, and the eggs per gram (EPG) of feces was detected via a modified McMaster technique. To investigate the possible effects of parasite concentration on serum mineral levels, blood was drawn from the goats and serum calcium, phosphorus, magnesium, iron, copper, zinc, manganese, nickel, and cadmium levels were measured via the ICP-OES technique...
September 2016: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/27904899/dependence-of-magnetic-coupling-on-ligands-at-the-axial-positions-of-ni-ii-in-phenoxido-bridged-dimers-experimental-observations-and-dft-studies
#13
Monotosh Mondal, Sanjib Giri, Pampa M Guha, Ashutosh Ghosh
A nickel(ii) complex [Ni2L(R)2(CH3CN)4](ClO4)2·2CH3CN (1) has been synthesized by using a tridentate reduced Schiff base ligand, HL(R), 2-[(3-methylamino-propylamino)-methyl]-4-nitrophenol and Ni(ClO4)2·6H2O. Stoichiometrically controlled addition of NH4SCN to the acetonitrile-water solution of 1 produced two other complexes, [Ni2L(R)2(μ1,1-NCS)(CH3CN)2](ClO4)·CH3CN (2) and [Ni2L(R)2(NCS)2 (CH3CN)2] (3) by replacing one and two coordinated CH3CN by NCS(-), respectively. The dinuclear Ni(II) complexes 1 and 3 are structurally very similar containing a diphenoxido bridge between the Ni(II) ions...
December 1, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27901646/the-time-dependent-health-and-biochemical-effects-in-rats-exposed-to-stainless-steel-welding-dust-and-its-soluble-form
#14
Tadeusz Halatek, Magdalena Stanislawska, Irena Kaminska, Malgorzata Cieslak, Radoslaw Swiercz, Wojciech Wasowicz
Welding processes that generate fumes containing toxic metals, such as hexavalent chromium (Cr(VI)), manganese (Mn), and nickel (Ni), have been implicated in lung injury, inflammation, and lung tumor promotion in animal models. The principal objective of this study was to determine the dynamics of toxic effects of inhalation exposure to morphologically rated welding dust from stainless steel welding and its soluble form in TSE System with a dynamic airflow. We assessed the pulmonary toxicity of welding dust in Wistar rats exposed to 60...
November 30, 2016: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/27901411/injury-mortality-in-a-cohort-of-mining-smelting-and-refining-workers-in-ontario
#15
Colin J Berriault, Nancy E Lightfoot, Steven K Seilkop, Bruce R Conard
Injury mortality was followed up from 1950 to 2000 in a cohort of 56,576 nickel workers. Injury fatalities were elevated throughout the cohort of never sinter plant workers (SMR = 134, 95% CI: 129-140). Elevations were also observed in injury mortality sub-categories of road, rail, and air (SMR = 137, 95% CI: 127-147); boating and swimming (SMR = 150, 95% CI: 128-176); suicide and possible suicide (SMR = 124, 95% CI: 114-135); and possibly job-related accidents (SMR = 160, 95% CI: 145-175). The results were largely attributed to underground miners with 61...
November 30, 2016: Archives of Environmental & Occupational Health
https://www.readbyqxmd.com/read/27898326/biochar-supported-ni-fe-bimetallic-nanoparticles-to-remove-1-1-1-trichloroethane-under-various-reaction-conditions
#16
Hui Li, Yue-Feng Qiu, Xiao-Li Wang, Jie Yang, Yun-Jiang Yu, Ya-Qin Chen, Yong-di Liu
In this study, Ni/Fe nanoparticles supported by biochar to stimulate the reduction of 1,1,1-trichloroethane (1,1,1-TCA) in groundwater remediation was investigated. In order to enhance the reactivity of ZVI (zero valent iron) nanoparticles, surface modification of ZVI was performed using nickel and biochar. The removal efficiency of 1,1,1-TCA increased from 42.3% to 99.3% as the biochar-to-Ni/Fe mass ratio increased from 0 to 1.0. However a higher biochar-to-Ni/Fe ratio showed little difference in the 1,1,1-TCA degradation efficiency...
November 26, 2016: Chemosphere
https://www.readbyqxmd.com/read/27898047/inhibition-of-urease-by-disulfiram-an-fda-approved-thiol-reagent-used-in-humans
#17
Ángel Gabriel Díaz-Sánchez, Emilio Alvarez-Parrilla, Alejandro Martínez-Martínez, Luis Aguirre-Reyes, Jesica Aline Orozpe-Olvera, Miguel Armando Ramos-Soto, José Alberto Núñez-Gastélum, Bonifacio Alvarado-Tenorio, Laura Alejandra de la Rosa
Urease is a nickel-dependent amidohydrolase that catalyses the decomposition of urea into carbamate and ammonia, a reaction that constitutes an important source of nitrogen for bacteria, fungi and plants. It is recognized as a potential antimicrobial target with an impact on medicine, agriculture, and the environment. The list of possible urease inhibitors is continuously increasing, with a special interest in those that interact with and block the flexible active site flap. We show that disulfiram inhibits urease in Citrullus vulgaris (CVU), following a non-competitive mechanism, and may be one of this kind of inhibitors...
November 26, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27897421/nickel-catalyzed-alkoxy-alkyl-interconversion-with-alkylborane-reagents-through-c-o-bond-activation-of-aryl-and-enol-ethers
#18
Lin Guo, Xiangqian Liu, Christoph Baumann, Magnus Rueping
A nickel-catalyzed alkylation of polycyclic aromatic methyl ethers as well as methyl enol ethers with B-alkyl 9-BBN and trialkylborane reagents that involves the cleavage of stable C(sp(2) )-OMe bonds is described. The transformation has a wide substrate scope and good chemoselectivity profile while proceeding under mild reaction conditions; it provides a versatile way to form C(sp(2) )-C(sp(3) ) bonds that does not suffer from β-hydride elimination. Furthermore, a selective and sequential alkylation process by cleavage of inert C-O bonds is presented to demonstrate the advantage of this method...
December 5, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27897079/copper-ii-cobalt-ii-and-nickel-ii-complexes-of-lapachol-synthesis-dna-interaction-and-cytotoxicity
#19
Leila Tabrizi, Faranak Talaie, Hossein Chiniforoshan
Three novel copper(II), cobalt(II), and nickel(II) complexes of lapachol (Lap) containing 1,10-phenanthroline (phen) ligand, [M(Lap)2(phen)] (M = Cu(II), 1, Co(II), 2, and Ni(II), 3), have been synthesized and characterized using, elemental analysis and spectroscopic studies. Their interactions with calf thymus DNA (CT DNA) were investigated using viscosity, thermal denaturation, circular dichorism, fluorescence quenching, and electronic absorption spectroscopy. The DNA cleavage abilities of 1-3 have been studied, which cleavage activity of copper complex 1 is more than the complexes 2 and 3...
November 29, 2016: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/27895092/characterization-of-runella-slithyformis-hd-pnk-a-bifunctional-dna-rna-end-healing-enzyme-composed-of-an-n-terminal-2-3-phosphoesterase-hd-domain-and-a-c-terminal-5-oh-polynucleotide-kinase-domain
#20
Annum Munir, Stewart Shuman
: 5' and 3' end healing are key steps in nucleic acid break repair in which 5' -OH ends are phosphorylated by a polynucleotide kinase and 3' -PO4 or 2',3' -cyclic-PO4 ends are hydrolyzed by a phosphoesterase to generate the 5' -PO4 and 3' -OH termini required for sealing by classic polynucleotide ligases. End healing and sealing enzymes are present in diverse bacterial taxa, often organized as modular units within a single multifunctional polypeptide or as subunits of a repair complex...
November 28, 2016: Journal of Bacteriology
keyword
keyword
118564
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"