نتایج جستجو برای: metal ion
تعداد نتایج: 385192 فیلتر نتایج به سال:
First, Schiff base iminopyridine ligand has been prepared by the condensation between primary amine, dimethylaniline and active carbonyl group of pyridine carboxaldehyde, then related complexes were synthesized in methanol solution. The ligand and metal complexes have been characterized by elemental analysis, UV, IR, 1 H NMR and 13CNMR spectroscopy. The spectroscopic data of metal complexes ind...
A method is described to obtain multicollision dissociation threshold (MCDT) values. These values provide relative reaction thresholds for dissociation in the three major gas-phase fragmentation reactions of oligosaccharides complexed to alkali metal ions. The quasimolecular ions are produced using matrix-assisted laser desorption/ionization Fourier transform mass spectrometry. The MCDTs for al...
Dithiocarbamate chitosan, an insoluble derivative obtained from carbon disulfide, and N-(o—carboxybenzyl) chitosan and N—car— boxymethyl chitosan, two water—soluble olyamoholytes obtained from phthalaldehydic acid and glyoxylic acid, can be used for removal of metal ions from dilute solutions. Their characteristic properties are described in terms of infrared, ultraviolet and circular dichroism...
Fungi consists of varied group of heterotrophs, which due to their unique properties show applications in different fields. Nanotechnology covers diverse fields of science and technology, and the fabrication of nanoparticles using the biological route is the need of the day. The introduction of biological agents for the synthesis of nanoparticles has encouraged the researchers to search for the...
Unprecedented multi-channel TiN micro/nanotubes as well as various metal nitride nanofibers, including TiN, VN, NbN and ternary metal nitride nanofibers, were fabricated by a template free electrospinning method combined with post-nitridation.
OBJECTIVES Alarm over the reported high failure rates for metal-on-metal (MoM) hip implants as well as their potential for locally aggressive Adverse Reactions to Metal Debris (ARMDs) has prompted government agencies, internationally, to recommend the monitoring of patients with MoM hip implants. Some have advised that a blood ion level >7 µg/L indicates potential for ARMDs. We report a systema...
Decapping enzymes are required for the removal of the 5'-end cap of mRNAs. These enzymes exhibit a specific hydrolase activity, resulting in cleavage between the alpha- and beta-phosphates of the m7GpppN cap to generate both m7GDP and monophosphorylated RNA products. Decapping enzymes have been found in humans, plants and yeasts, and have been discovered more recently in vaccinia virus (D10 pro...
the present work is carried out to study the antioxidant potential of ethanolic extract of alstonia scholaris linn. ( apocynaceae ) using various in vitro tests including 1,1-diphenyl-2-picryl-hydrazil (dpph . ) free radical scavenging, metal ion chelating, hydrogen peroxide scavenging, superoxide anion radical scavenging, and ferric thiocyanate reducing ability. ethanolic extract of alstonia...
Metal-ion batteries are systems for electrochemical energy conversion and storage with only one kind of ion shuttling between the negative positive electrode during discharge charge. This concept also known as rocking-chair battery has been made highly popular lithium-ion its most example. The principle can be applied other cations both mono- multivalent. might have implications advantages in t...
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