keyword
MENU ▼
Read by QxMD icon Read
search

nickel

keyword
https://www.readbyqxmd.com/read/29351606/analysis-of-metal-tolerance-in-rhizobium-leguminosarum-strains-isolated-from-an-ultramafic-soil
#1
Laura Rubio-Sanz, Belén Brito, Jose Palacios
Natural habitats containing high amounts of heavy metals provide a valuable source of bacteria adapted to deal with metal toxicity. A functional analysis of the population of legume endosymbiotic bacteria in an ultramafic soil was undertaken by studying a collection of Rhizobium leguminosarum bv viciae (Rlv) isolates obtained using pea as trap plant. One of the isolates, Rlv UPM1137, was selected on the basis of its higher tolerance to nickel and cobalt and presence of inducible mechanisms for such tolerance...
January 17, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29349477/isomerism-and-reactivity-of-nickel-ii-acetylacetonate-bis-thiosemicarbazone-complexes
#2
Jessica K Bilyj, Mark J Riley, Paul V Bernhardt
The complexation of nickel(ii) with acetylacetonate bis(thiosemicarbazone) N2S2 ligands with varying substituents has revealed that two isomers can exist independently in solution. These isomers differ according to the formation of either a 5,6,5-membered (symmetric) or a 4,7,5-membered (asymmetric) chelate ring arrangement. These two isomers have distinctly different properties. The symmetric complex (sym-[Ni(acacR)]) is unstable in the presence of air and slowly converts to the oxidised analogue sym-[Ni(acacRO)] with a carbonyl group installed at the apical C-atom...
January 19, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29349459/a-versatile-single-molecular-precursor-for-the-synthesis-of-layered-oxide-cathode-materials-for-li-ion-batteries
#3
Maofan Li, Jiajie Liu, Tongchao Liu, Mingjian Zhang, Feng Pan
A carbonyl-bridged single molecular precursor LiTM(acac)3 [transition metal (TM) = cobalt/manganese/nickel (Co/Mn/Ni), acac = acetylacetone], featuring a one-dimensional chain structure, was designed and applied to achieve the layered oxide cathode materials: LiTMO2 (TM = Ni/Mn/Co, NMC). As examples, layered oxides, primary LiCoO2, binary LiNi0.8Co0.2O2 and ternary LiNi0.5Mn0.3Co0.2O2 were successfully prepared to be used as cathode materials. When they are applied to lithium-ion batteries (LIBs), all exhibit good electrochemical performance because of their unique morphology and great uniformity of element distribution...
January 19, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29349368/severe-generalized-dermatitis-in-a-nickel-allergic-patient-with%C3%A2-a%C3%A2-popliteal-artery-nitinol-stent
#4
Andres Guerra, Melissa Kirkwood
We present the case of a patient who developed a full-body desquamating macular-papular, pruritic rash after endovascular placement of a popliteal artery nitinol stent for acute limb ischemia. The rash was resistant to high-dose steroid and immunosuppressive treatment and intensive topical treatment. Patch testing revealed nickel allergy. The stented arterial segment was removed, with significant improvement in his symptoms that allowed the cessation of prednisone and topical treatments. The epidemiology, pathophysiology, and clinical effect of nickel allergy are discussed in addition to the use of nickel-alloy stents...
March 2017: Journal of Vascular Surgery Cases and Innovative Techniques
https://www.readbyqxmd.com/read/29346424/higher-sequence-diversity-in-the-vaginal-tract-than-in-blood-at-early-hiv-1-infection
#5
Katja Klein, Gabrielle Nickel, Immaculate Nankya, Fred Kyeyune, Korey Demers, Emmanuel Ndashimye, Cynthia Kwok, Pai-Lien Chen, Sandra Rwambuya, Art Poon, Marshall Munjoma, Tsungai Chipato, Josaphat Byamugisha, Peter Mugyenyi, Robert A Salata, Charles S Morrison, Eric J Arts
In the majority of cases, human immunodeficiency virus type 1 (HIV-1) infection is transmitted through sexual intercourse. A single founder virus in the blood of the newly infected donor emerges from a genetic bottleneck, while in rarer instances multiple viruses are responsible for systemic infection. We sought to characterize the sequence diversity at early infection, between two distinct anatomical sites; the female reproductive tract vs. systemic compartment. We recruited 72 women from Uganda and Zimbabwe within seven months of HIV-1 infection...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29345932/synthesis-of-polysubstituted-quinolines-from-%C3%AE-2-aminoaryl-alcohols-via-nickel-catalyzed-dehydrogenative-coupling
#6
Sanju Das, Debabrata Maiti, Suman De Sarkar
This study reports a nickel catalyzed sustainable synthesis of polysubstituted quinolines from α-2-aminoaryl alcohols by a sequential dehydrogenation and condensation process that offers the advantages of low catalyst loading and wide sub-strate scope. In contrast to earlier reported methods, this strategy allows the use of both primary as well as secondary α-2-aminoaryl alcohols in combination with either ketones or secondary alcohols for desired product formation. Using this methodology, thirty substituted quinoline derivatives were synthesized with up to 93% isolated yield...
January 18, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29345927/embedded-multireference-coupled-cluster-theory
#7
David James Coughtrie, Robin Giereth, Daniel Kats, Hans-Joachim Werner, Andreas Köhn
Internally contracted multireference coupled cluster (icMRCC) theory is embedded within multireference perturbation theory (MRPT) to calculate energy differences in large strongly correlated systems. The embedding scheme is based on partitioning the orbital spaces of a complete active space self consistent field (CASSCF) wave function, with the truncated virtual space constructed by transforming selected projected atomic orbitals (PAOs). MRPT is applied to the environment using a subtractive embedding approach, that also allows for multilayer embedding...
January 18, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29345435/n-modified-nio-surface-for-superior-alkaline-hydrogen-evolution
#8
Le Zhang, Peng Fei Liu, Yu Hang Li, Meng Yang Zu, Xu Li, Zheng Jiang, Yun Wang, Huijun Zhao, Huagui Yang
Boosting the sluggish kinetics of hydrogen evolution reaction in alkaline environments is the key for large application of water-alkali and chlor-alkali electrolysis. Herein, for the first time, we use nitrogen atoms to precisely modulate electrochemical active sites on the surface of nickel oxide with low coordinated oxygen atoms, to achieve enhanced kinetics of alkaline hydrogen evolution. Theoretical and experimental results demonstrate that the surface charge redistribution after modulation simultaneously facilitates the initial water dissociation step, as well as the subsequent recombination of Had from low coordinated oxygen sites and desorption of OH-ad from nickel sites, thus accelerating the overall hydrogen evolution process...
January 18, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29345230/critical-scrutiny-needed
#9
Thorsten Nickel
No abstract text is available yet for this article.
January 8, 2018: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29343066/kane-fermion-in-two-dimensional-%C3%AF-conjugated-bis-iminothiolato-nickel-monolayer
#10
Aizhu Wang, Xinrui Zhao, Mingwen Zhao, Xiaoming Zhang, Yuan Ping Feng, Feng Liu
Massless Kane fermion revealed in zinc-blende semiconductors has recently gained interest in the broad study of relativistic materials. In particular, two-dimensional (2D) Kane fermion was expected as a hybrid of a pseudospin-1 and -1/2 Dirac fer-mions. Based on first-principles calculations, we demonstrated that 2D Kane fermion can be realized in a recently-synthesized metal-organic framework, namely bis(iminothiolato)nickel monolayer. A slight compression takes the system from a sem-imetal to a semiconductor...
January 17, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29343060/direct-co2-addition-to-a-ni-0-co-species-allows-the-selective-generation-of-a-nickel-ii-carboxylate-with-expulsion-of-co
#11
Dipankar Sahoo, Changho Yoo, Yunho Lee
Addition of CO2 to a low-valent nickel species has been explored with a newly designed acriPNP pincer ligand (acriPNP- = 4,5-bis(diisopropylphosphino)-2,7,9,9-tetramethyl-9H-acridin-10-ide). This is a crucial step in understanding biological CO2 conver-sion to CO found in carbon monoxide dehydrogenase (CODH). A four-coordinate nickel(0) state was reliably accessed in the pres-ence of a CO ligand, which can be prepared from a stepwise reduction of a cationic {(acriPNP)Ni(II)-CO}+ species. All three Ni(II), Ni(I) and Ni(0) monocarbonyl species were cleanly isolated and spectroscopically characterized...
January 17, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29342316/solvent-free-enzyme-activity-quick-high-yielding-mechano-enzymatic-hydrolysis-of-cellulose-into-glucose
#12
Fabien Hammerer, Leigh Loots, Jean-Louis Do, J P Daniel Therien, Christopher W Nickels, Tomislav Friscic, Karine Auclair
Mechanochemistry enables enzymatic cleavage of cellulose into glucose without bulk solvents, acids, other aggressive reagents or substrate pre-treatment. This clean mechano-enzymatic process is also directly applicable to biomass, avoids many limitations associated with the use of cellulases, and produces glucose concentrations >3 times the highest obtained by conventional methods.
January 17, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29342204/bulk-metal-concentrations-versus-total-suspended-solids-in-rivers-time-invariant-catchment-specific-relationships
#13
Touraj Nasrabadi, Hermann Ruegner, Marc Schwientek, Jeremy Bennett, Shahin Fazel Valipour, Peter Grathwohl
Suspended particles in rivers can act as carriers of potentially bioavailable metal species and are thus an emerging area of interest in river system monitoring. The delineation of bulk metals concentrations in river water into dissolved and particulate components is also important for risk assessment. Linear relationships between bulk metal concentrations in water (CW,tot) and total suspended solids (TSS) in water can be used to easily evaluate dissolved (CW, intercept) and particle-bound metal fluxes (CSUS, slope) in streams (CW,tot = CW + CSUS TSS)...
2018: PloS One
https://www.readbyqxmd.com/read/29342074/characterization-of-an-additive-manufactured-tial-alloy-steel-joint-produced-by-electron-beam-welding
#14
Gloria Basile, Giorgio Baudana, Giulio Marchese, Massimo Lorusso, Mariangela Lombardi, Daniele Ugues, Paolo Fino, Sara Biamino
In this work, the characterization of the assembly of a steel shaft into a γ-TiAl part for turbocharger application, obtained using Electron Beam Welding (EBW) technology with a Ni-based filler, was carried out. The Ti-48Al-2Nb-0.7Cr-0.3Si (at %) alloy part was produced by Electron Beam Melting (EBM). This additive manufacturing technology allows the production of a lightweight part with complex shapes. The replacement of Nickel-based superalloys with TiAl alloys in turbocharger automotive applications will lead to an improvement of the engine performance and a substantial reduction in fuel consumption and emission...
January 17, 2018: Materials
https://www.readbyqxmd.com/read/29340481/evaluation-of-the-sealing-ability-of-different-root-canal-sealers-a-combined-sem-and-micro-ct-study
#15
Yan Huang, Kaan Orhan, Berkan Celikten, Ayşe Işıl Orhan, Pelin Tufenkci, Semra Sevimay
OBJECTIVE: The purpose of this study was to analyze the ability of multiple compounds to seal the dental tubules using scanning electron microscopy (SEM) and micro-computed tomogra-phy (micro-CT). MATERIAL AND METHODS: Twenty-four single-root human mandibular premolars were selected and instrumented with nickel-titanium rotary file and the final file size was #40/06. They were then randomly allocated into 2 groups, and all samples were filled with single cone gutta-percha (#40/06) and one of the tested sealers (AH Plus and EndoSequence BC sealers)...
January 15, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29339738/dna-methyltransferase-inhibition-upregulates-mhc-i-to-potentiate-cytotoxic-t-lymphocyte-responses-in-breast-cancer
#16
Na Luo, Mellissa J Nixon, Paula I Gonzalez-Ericsson, Violeta Sanchez, Susan R Opalenik, Huili Li, Cynthia A Zahnow, Michael L Nickels, Fei Liu, Mohammed N Tantawy, Melinda E Sanders, H Charles Manning, Justin M Balko
Potentiating anti-tumor immunity by inducing tumor inflammation and T cell-mediated responses are a promising area of cancer therapy. Immunomodulatory agents that promote these effects function via a wide variety of mechanisms, including upregulation of antigen presentation pathways. Here, we show that major histocompatibility class-I (MHC-I) genes are methylated in human breast cancers, suppressing their expression. Treatment of breast cancer cell lines with a next-generation hypomethylating agent, guadecitabine, upregulates MHC-I expression in response to interferon-γ...
January 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29339414/assembly-of-methyl-coenzyme-m-reductase-in-the-methanogenic-archaeon-methanococcus-maripaludis
#17
Zhe Lyu, Chau-Wen Chou, Hao Shi, Liangliang Wang, Robel Ghebreab, Dennis Phillips, Yajun Yan, Evert C Duin, William B Whitman
Methyl-coenzyme M reductase (MCR) is a complex enzyme that catalyzes the final step in biological methanogenesis. To better understand its assembly, the recombinant MCR from the thermophile Methanothermococcus okinawensis (rMCRok) was expressed in the mesophile Methanococcus maripaludis The rMCRok was post-translationally modified correctly and contained McrD and the unique nickel tetrapyrrole coenzyme F430 Subunits of the native M. maripaludis (MCRmar) were largely absent, suggesting that the recombinant enzyme was formed by an assembly of co-transcribed subunits...
January 16, 2018: Journal of Bacteriology
https://www.readbyqxmd.com/read/29338228/total-synthesis-and-structural-determination-of-xr774-a-tyrosine-kinase-inhibitor
#18
Kuniaki Tatsuta, Daisuke Sekine, Shinichi Hayama, Yasuhiro Kataoka, Shinya Hayashi, Seijiro Hosokawa
Total synthesis and structural determination of XR774 has been accomplished. The benzo[j]fluoranthene skeleton has been constructed by the regioselective coupling between tetraline 3 and tetralone 4 successively followed by the sequential transformation including the Birch reduction to prepare allylic alcohol, simultaneous bromination of vinylic and aromatic moieties, and the nickel-mediated intramolecular coupling reaction. The optical resolution of racemic 17 led to the first total synthesis of (-)-XR774.
January 16, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29338205/control-of-amphiphile-self-assembly-via-bioinspired-metal-ion-coordination
#19
Abigail S Knight, Josefin Larsson, Jing M Ren, Raghida Bou Zerdan, Shay Seguin, Remy Vrahas, Jianfang Liu, Gang Ren, Craig J Hawker
Inspired by marine siderophores that exhibit a morphological shift upon metal coordination, hybrid peptide-polymer conjugates that assemble into different morphologies based on the nature of the metal ion coordination have been designed. Coupling of a peptide chelator, hexahistidine, with hydrophobic oligostyrene allows a modular strategy to be established for the efficient synthesis and purification of these tunable amphiphiles (oSt(His)6). Remarkably, in the presence of different divalent transition metal ions (Mn, Co, Ni, Cu, Zn, and Cd) a variety of morphologies were observed...
January 17, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29338197/modification-of-vapor-phase-concentrations-in-mos2-growth-using-a-nio-foam-barrier
#20
Yee-Fun Lim, Kumar Priyadarshi, Fabio Bussolotti, Pranjal Kumar Gogoi, Xiaoyang Cui, Ming Yang, Jisheng Pan, Shi Wun Tong, Shijie Wang, Stephen J Pennycook, Kuan Eng Johnson Goh, Andrew T S Wee, Swee Liang Wong, Dongzhi Chi
Single-layer molybdenum disulfide (MoS2) has attracted significant attention due to its unique electronic and physical properties with much effort invested towards obtaining large area high quality monolayer MoS2 films. In this work, we demonstrate a reactive barrier-based approach to achieve growth of highly homogeneous single layer MoS2 on sapphire through the use of a nickel oxide foam barrier during chemical vapor deposition. Due to the reactivity of the NiO barrier with MoO3, the concentration of precursors reaching the substrate and thus nucleation density is effectively reduced, allowing grain sizes of up to 170 µm and continuous monolayers on the centimeter length scale being obtained...
January 16, 2018: ACS Nano
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"