A new method for the decarboxylative coupling of alkyl N-hydroxyphthalimide esters (NHP esters) with aryl iodides is presented. In contrast to previous studies that form alkyl radicals from carboxylic acid derivatives, no photocatalyst, light, or arylmetal reagent is needed, only nickel and a reducing agent (Zn). Methyl, primary, and secondary alkyl groups can all be coupled in good yield (77% ...

A low cost, low-temperature processable, highly efficient nickel sulfide counter electrode is demonstrated. Using the tailored, preformed nickel sulfide nanoparticles and electrostatic self-assembly, a novel counter electrode was fabricated that exceeded the efficiency of a conventional Pt-based cell.

The present work describes the synthesis of copper(II) oxide nanoparticles (NPs) with high surface area (52.11 m2/g) and its Ni(II) adsorption efficiency from contaminated water at room temperature. Copper (II) NPs are able to remove as 93.6 per cent 93.7 using 500 ppb & 1000 initial concentration nickel near-neutral pH respectively. CuO is very much effective more than 75 over a wide range...

Radioactive nickel chloride (63NiC12) was injected i.v. into rabbits in dosage of 0.24 mg Ni/kg body wt. 63Nj was rapidly cleared from the serum (T112 8.2 h) during the period from 1 h to 2 days after the injection, but slowly (T112 95 h) during the period from 4 to 7 days after the injection. During 24 h after injection of 63NiC12, an average of 90% of serum 63Ni was bound to albumin and 10% w...

To determine the chemotransduction characteristics of ventricular sensory neurites associated with nodose ganglion afferent neurons, various chemicals were applied individually to epicardial sensory neurites associated with individual afferent neurons in anesthetized guinea pigs. The following ion channel-modifying agents were tested: barium chloride, cadmium chloride, calcium chloride, the che...

Abstract The Nickel oxide nanoparticles (NiO NPs) and oxide/Nanoclay nanocomposite (NiO/Nc NC) were synthesized by chemical reduction method used for the photodegradation of Orange II dyes in aqueous solution. samples characterized through SEM, EDX, FTIR TGA. SEM analysis presented that NiO NPs are spherical with irregular shapes sizes. size particles is range 100–400 nm. It was also observed d...

The paper is concerned with the technological process of renovation of shafts used in industrial manufacturing for extruding of sheet material. In the classical renovation technologies, a chrome based coating is applied to the working surface of the shaft in galvanic baths. The process, however, is known to be exclusively harmful due to the waste cyanide products. In this work, we present an ad...

The safety and toxicity of nanoparticles are of growing concern despite their significant scientific interests and promising potentials in many applications. The properties of nanoparticles depend not only on the size but also the structure, microstructure and surface coating. These in turn are controlled by the synthesis and processing conditions. The dependence of cytotoxicity on particle siz...

Electrostatic interactions strongly affect the immersion depth of nanoparticles into an interface. We prove this statement by measuring the diffusion constant of charged nanoparticles at a sodium chloride solution/air interface. Interfacial diffusion of nanoparticles slows down with increasing ionic strength of the sodium chloride solution. Hydrodynamic calculations are used to estimate the imm...

The objective of the present investigation was to study the influence of the occupational nickel exposure on the concentration of nickel in nasal mucosa, plasma and urine. Plasma, urine and biopsy specimens of nasal mucosa from 318 nickel workers, 15 retired nickel workers and 57 non-exposed controls were analyzed for nickel by atomic absorption spectrometry. The results showed that nickel expo...