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The mechanical property of inconel 718 Nd-YAG laser welding joint was investigated and analyzed with tensile test, microhardness test, metallurgical structure analyzing and other approaches.
Weld Surface Topography and Metallurgical Structure Investigation.
It indicated that the structure and composition were not uniform in the weld; different parts had different structure and grain dimension.
The maximum value of welding joint tensile strength obtained at P=18%, T=3.0ms. (3)As grain coarsened at HAZ and brittle structure precipitated at weld, the plasticity of welding joint decreased and the elongation percentage was less than base metal. (4)The microhardness value which concerned with weld microstructure and grain size was highest at the center of welding, relatively low at HAZ and edge, but all were greater than base metal.
L: Materials Chemistry and Physics Vol. 104 (2007) p. 293 [9] M.K.

Flame Retardant Polyamide 6 Composites Using NMH or NMH/MCA/APP Yan Shena Shaoguo Wenb Jihu Wangc Hongbo Liud Hailiang Qie Qian Xuf Weiwei Hug College of Chemistry and Chemical engineering, Shanghai University of Engineering Science, Shanghai 201620, China ashenyan_379949@163.com, bsgwen@yahoo.cn, cwangjihu@163.com, dLiuhongbo81@gmail.com,eqihailiang@163.com, fxuqian19850504@163.com，gweiweihu@163.com Keywords: PA6; Nano-Magnesium Hydroxide; Melamine Cyanurate; Ammonium Polyphosphate; Horizontal Burning Abstract.
Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to analyze the structure of nano-magnesium hydroxide.
The results showed NMH had hexagonal orthorhombic crystal structure with size of 300×200×100nm.
The structure of NMH was hexagonal orthorhombic crystal structure.
So the structure of NMH was s a typical hexagonal orthorhombic crystal structure.

It is very possible for the foam zinc materials to take the place of zinc powder and become a new ideal material of electrode for zinc-air battery, because of its excellent three dimensional reticulated structure, high porosity, high specific surface area and uniform quality, and was widely used in many other fields.
Foam metallic materials produced by Electro-deposition technique have an excellent three dimensional reticulated structure, high porosity, high specific surface area and uniform quality.
Because of the complex structure, high porosity and flexibility of the foam substrate materials, the conventional technologies of planar or liner zinc plating are unable to deposit zinc onto the surface of the foam substrate.
Conclusion The foam zinc, prepared by electro-deposition technology, presented a three-dimensional reticular structure with high porosity, high specific surface area, uniform distribution, and the outward appearance of the coating is bright, the porosity of it is greater than 90%.
Ornamental Electroplate Coating(Chemistry Industry Press, Peking 2004) [6] Hajdu J.

The resulted polymethylmethacrylate-silica(PMMA-silica) core-shell particles were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which clearly revealed that the PMMA-silica core-shell particles had the raspberry-like structure with 45nm wall thickness.
This hierarchical structure and the wax with low surface energy allow the leaf surface to possess self-cleaning property.
Shi: Journal of Physical Chemistry B 109 (2005), 23787-23793

It brings down the rise of concrete temperature significantly and helps solve the problems of shrinkage and crack of concrete structure.
Journal of Building Structure,2010,31(2):93-98.In Chinese
Cement Chemistry (2nd edition),London:Thomas Telford Services Ltd,1997

Samples for investigation of cast iron as-cast structure were cut out from castings after cooling.
Cast iron which has solidified by this moment on the surface of crystallizer is of white cementite structure.
At cooling of castings from 800°C in the air cast iron structure have pearlite metal basis.
PR and billets from grey cast iron of the same chemistry obtained by casting in sand moulds (SM) by continuous horizontal casting (CHC) and CICF were analyzed, the results are given in Table 1.
The mode of change of cast iron structure on wall thickness of the casting at intensive one-way heat sink is shown.

These images suggest that porous structure of the oxidation film on pure titanium was formed at an anodizing time of 5 min.
This behavior demonstrates that porous structure of the oxidation film was formed at the beginning of the anodizing.
Analysis of the results led to the following conclusion: (1) The anodized pure titanium showed a porous structure
(2) HA coatings deposited on anodized pure titanium in a simulated body fluid have a relatively regular network structure
Adamczyk: Journal of Molecular Structure, Vol. 744 (2005), p. 633

Liang Yu has taken advantage of solvothermal method and acquired dandelion-like ZnO nano-structure [10].
Therefore, globular ZnO is a multi-layer fractal structure.
When globular ZnO occurs on the rough surface, a multi-layer multi-scale ladder-like compound structure is produced, which is identical to the structure of lotus leaves.
Summary The combination of micro-structure textured by nanosecond laser and globular ZnO by hydrolysis method can produce a multi-layer multi-scale ladder-like compound structure, which is identical to the structure of lotus leaves.
Chinese Journal of Inorganic Chemistry.

Introduction Protein stabilization has been a major challenge in biotechnology and protein chemistry research during the last few decades.
Coordinates of the atoms that were missing in the crystallographic structure were reconstructed using the PSFGEN structure building utility, a module of NAMD[12].
Conformation analysis and visual inspection of structures were performed with VMD software packages.
Secondary Structure Investigations.
At 600 K simulation, the structure becomes very disorganized with loss of almost all the secondary structure.

The possibility of maintaining the structure of polyetheretherketone under conditions of its extrusion processing without the risk of deterioration of the main technological and operational characteristics is revealed.
Previously, we have studied the regularities of thermal and thermo-oxidative transformations of PEEK of various structures in a wide range of temperatures, and proposed thermal decomposition schemes depending on the structure and temperature of pyrolysis [1-3].
Thus, it was found that PEEK undergoes changes in structure and molecular weight during operation and processing, which necessitates the use of stabilizers to extend the service life of polymer products [5, 6].
Khashirov, Comparative studies of thermal degradation of polyether ketones of various structures using pyrolytic gas chromatography, Proceedings of Kabardino-Balkarian State University. 7 (2017) 64-69
Khashirova, Synthesis and properties of polyetheretherketones for 3d printing, Fibre Chemistry. 49 (2018) 414-419