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Some recent studies revealed that there was an increasing number of tea products exceeding the former maximum permissible concentration in China for Pb of 2 mg·kg-1 and thus affecting trade and consumer confidence [1].
And the 2 rates were respectively marked in number 1 and 2, for instance, CSP1 and CSP2.
While researchers also found that Pb concentrations in wheat and barley grains collected nationwide in the UK had no significant correlation with soil Pb or pH [15].

The structure under consideration represents a thin shell (made of steel or reinforced concrete), the hollow of which is filled with granulated solid (in most cases – with coarse-grained soil), and can be used for building wharves and protective structures in hydraulic engineering construction (fig. 1), retaining works, deepened parts of buildings, sewerage systems, bridge abutments and other structures in industrial, civil and traffic facilities construction.
The analysis of calculation and design methods for structures of filled shells assigned by codes (SP 23.13330.2011 [4], SP 22.13330.2011 [5], etc.) allows emphasizing a number of general points: – analysis of structures of filled shells represents a set of rather odd calculations which are not combined into a substantiated, step-by-step succession that would make up general logic of calculated justification of service performance of the structures under consideration
– the main problems of calculation and design of structures of filled shells and their foundations remain solved at the stage of generalities extended to all principal types of structures and their foundations; specialized codes have been elaborated only for a limited system of design conditions; – basic design methods for structures of filled shells have been worked out on the basis of plane problem solution, without taking into consideration the peculiarities of spatial performance of the structure, changing engineering-geological, structural and other conditions along its length; – there remains open the question about methodology of calculating and taking into consideration in corresponding combinations along with the most common loads a number of special loads (such as the loads of construction period; loads caused by temperature change – for the especially severe climatic conditions; seismic and other dynamic loads); – the existing engineering design procedures do not allow assessing

Contaminants appeared in oil in production process but during operating their number considerably increases [1].
Therefore the smaller number of abrasive particles were supplied to the friction contact zone and as the consequence wear decreased.
There were the following test parameters: - lubricating agent - SD SAE 20W/40 oil (kinematic viscosity 15 mm2/s at 373K, viscosity index   135), - contaminant - hard aluminium oxide powder (concentration in oil - 0,5 g/l, average diameter of   grains - 21 mm) , - journal diameter – 52.69 mm, - bearing length - 30 mm, - relative clearance ratio - 0.002, - journal angular velocity - 62.8 rad/s, - nominal contact pressure - 1.57 MPa, - total time of the test - 20 h.

In ceramics, a large particle or grain size normally results in a low mechanical strength, due to inhomogeneous thermal shrinkage that causes some level of residual thermal stresses in the ceramics.
Patent application number 20120098169. (2012) [4] D.J.
China patent application number 201210531925.X. (2012) [9] H.S.

On the other hand, a number of experimental investigations have been also developed in order to determine this coefficient [19-22].
Therefore, the analysis of dendritic array formed during solidification process deserves particular attention, since the dendrite fineness can be of even more importance in the prediction of mechanical properties than grain size.
Care should be taken, however, when trying to explain a general tendency such as the influence of solute content on hi because a number of other important factors influence such tendency.

The number of techniques to support decision-making in the field of maintaince is limited [4].
approximately in the middle of housing of maintained building, which are not visibly attacked by mold and algae 0 Other buildings 1 Point ranking of other risk factors · The building is located in an industrial agglomerations of a strong dust pollution + 1 · Farm buildings in the vicinity of the building + 1 · Body of water in the vicinity of appr. 100 metres + 1 · Direct neighbourhood of woods, meadows or fields + 1 · The building is upwind (from the west, north) in direct neighbourhood of woods, meadows or fields + 1 Total Table 2 Point ranking of the influence of technical condition of ETICS Mineral slightly dusting plaster (after “sliding” the plaster a hand is slightly smudged in the colour of the mortar). 1 Mineral mortar painted over leveling coating. 2 Silicate mortar 2 Silicone mortar 1 Acrylate mortar 3 Point ranking of other risk factors Structure of the plaster: · smooth-finish plaster +0 · vertically grooved +1 · horizontally grooved +3 Size of the grain
The count of bacteria and mold is determined as a number of colonies that grew on Petri dish and the result is recalculated on the colonies making units per 1 g of granular materials (CFU/g).

Lithium ion batteries have a number of advantages compared with other secondary batteries, for example, low self-discharge rate, long cycle life, ability to function at desired temperature [2,4].
Moreover, NrGO has nitrogen atom embedded on graphene sheets lead to a number of surface defects on graphene sheets, which can improve lithium intercalation [19], and shows good cycle performance at very high current rate and reduce capacity loss [20].
Ultrafine Grained Nanostructured Mater. 51 (2018) 1–12

A number of surface modification techniques, for example, electrochemical plating, conversion coating, anodizing, gas-phase deposition process and organic coating, have been used to improve its wear and corrosion resistance.
For the alloy Cu0.9NiAlCoCrFe in the experiments, its mixing entropy DSm=Rln(n)=Rln6=1.79R, (R: gas constant; n: the number of elements), is much higher than the formation entropy of intermetallic compounds or ordered phases.
The reason is that, under the effect of rapid heating and rapid cooling of the laser beam, the microstructure became very fine and is benefical to improve the microhardness of the HEA coating due to the fine-grained strengthening effect.

A construction 3D printer can be used in a wide range of areas: from creating small structures such as building blocks, flowerpots, benches to large building structures. 3D printing with concrete will also be useful for building houses in disaster-affected areas, in poor developing countries and in all other cases where large numbers of people need to be sheltered in a short time. 3D printing allows you to get products of various complex shapes with minimal time and material costs.
Automation of manual labor will reduce the number of construction workers and minimize the risk of industrial injuries.
Also, cheaper types of concrete can be used, such as fine-grained and sandy concrete modified with additives (hyperplasticizers, hardening accelerators, fiber).

Based on the relevant strengthening mechanisms of the IN718 alloy, the deformation resistance S can be written by, S=Sdisl+SDSA where Sdisl represents the resistance to dislocation motion by relatively strong obstacles (e.g. forest dislocations, grain boundaries, etc.), and SDSA refers to the resistance due to the DSA phenomenon.
Acknowledgments This publication has emanated from research conducted with the financial support of the Shenzhen Municipal Science and Technology Innovation Council under grant number JCY20160608161000821.
Financial support of the National Science Foundation Council under grant number 11872161 is also acknowledged.