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Brown found that nickel contents in barley grains is closely related to its germination [12].
Oral administration of a large number of nickel can cause vomiting, diarrhea and other symptoms, and enhance the occurrence of acute gastroenteritis and gingivitis [26].

There are lots of impurities in molten zinc and some of them are grains which come from the friction between the bearings and axes of passive rollers in the pot.
Rollers in diameter of 1.5m, 1.2m (the tension rollers), 0.8m, 0.3m (the wiping rollers) and 0.23m are respectively numbered as A, B, C, D, E.

In the second step there is a hydration of the cement grains, polymer flocculation and possibly coalescence of polymer particles.
Registration number CZ.1.07/2.3.00/20.0111, the project is co-funded by European Social Fund and the state budget of the Czech Republic.

The size of the difference depends on the kind and the local features of the material structure (defect, grain size).
Finding detailed data on the possibility of a real consideration of that fact in engineering calculations is quite difficult and in a number of situations it is even impossible.

Specifically, LaCoO3 is one of the promising catalytic materials with excellent catalytic performances in various reactions due to optimal number of electron in eg orbital, the intermediate strength of the Co-O bond and the appropriate adsorption interaction with the reactant [4].
The typical perovskite has large grain size and low surface area due to the need for high temperature synthesis.

The appearance of dead metal zones near the ends leads to a more quality plastic working of the inner layers of workpiece, macrodot welding, and reduction of grain sizes of metal [2–5].
The five numbers of specimens was chosen for each experience for statistical processing.

Moreover, numerical simulation represents the most suitable way to investigate accurately the evolution of the thermal, mechanical and microstructural variables in the workpiece during the process (such as stress and strain fields, temperature and damage distributions, as well as grain size), which cannot be assessed experimentally (ii) and whose knowledge would provide crucial insight in the process mechanics that is still not fully understood, allowing the development of more accurate analytical models (i).Due to the process features, the numerical simulation entails full 3D models, withfine element meshes and large number of incremental steps, and consequently long numerical solution times[4]are required which have represented the main limiting factor for the FE analyses.

This implies that the present of DEA will decrease surface tension which means reducing the molecules bonds thus, it will affect the grains formation as well as lower the peak intensity.
Acknowledgement This work was supported by a Science Fund grant from the Ministry of Science, Technology, and Innovation (MOSTI), Malaysia under project number 03-01-05-SF-0750 (Account No: 305/CINOR/613329).

The SEM image shows a number of nano-sized particles randomly distributed on the surface of the substrate Fig. 2 (b) shows the surface morphology of ZnO NRs grown on the seed layer by chemical method at optimized pH 6.
From the XRD pattern, the crystallite size was calculated for (002) orientation ZnO films deposited on ITO substrates using Scherrers' formula: where D is the crystallite size, λ is the wavelength, β is the full-width at half-maximum (FWHM) and θ is the diffraction angle, and the average grain size of the ZnO seed layered film deposited on ITO, substrates was found to be approximately 16.2nm respectively.

Furthermore, when Cu content at the grain boundary increases, a continuous liquid film will form, which is able to flow freely.
The increase in Mg can induce the formation of a large number of low-melting eutectic, which can heal the crack and thus reduces the tendency to cracking.