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Triaxial needles of dead microscopic marine fungi of the Porifera strain, so-called spongies, play a significant role in the heterogeneous structure of spongilite.
Cyclic freezing and thawing did not disrupt the structure of the mortar or lose weight of the samples.
Significantly enhanced porosity of the C-SS-40 mortar with the predominance of the amorphous microporous structure was evident – resulting in its lower strength.
Dron, Appréciation de I’Activité Pouzzolanique des Constituents Secondaires, in Vol. 3 of Proceedings of the 7th International Congress on the Chemistry of Cement, Éditions Septima, Paris, 1980, pp 36–41.

Crystal structures of the films have been studied using Rigaku TTRAX III grazing-incidence X-ray diffraction(GIXRD).
The result confirmed the deposition of the structure.
The nanoindentation test gave an idea about the structure and the grain size essential to achieve enhanced mechanical properties.
Journal of materials chemistry A, 7(5), pp.1936-1963

An increase in the dropping point indicates that the grease can maintain its structure at a higher temperature; therefore, adding CABP improves the grease's performance and structural stability.
Different preparation methods yield activated carbons with different morphological structures and crystallite sizes.
The XRD patterns revealed that all the prepared activated carbon had an amorphous structure.
Gad et al., “Jojoba Oil: An Updated Comprehensive Review on Chemistry, Pharmaceutical Uses, and Toxicity,” Polymers, vol. 13, no. 11, p. 1711, May 2021, doi: 10.3390/polym13111711

The chemistry of concrete at various temperatures might describe as follows [1,3]: • At 100° to 250°C temperature - Localized cracks or no concrete damage, no change in colour.
A handful of mixture formed into a ball with non-sagging consistency will not crumble or lose its void structure as the paste flows into the spaces between the aggregates.
The room-temperature form of quartz, α-quartz, undergoes a reversible change in crystal structure at 573 °C to form β-quartz.
[2] Concrete Society, Technical Report 33, Assessment and Repair of Fire Damaged Concrete Structures (1990)

The active polysaccharide structure-activity relationship research is still not perfect，can be thought of as the activity of polysaccharide and sugar composition of polysaccharides, glycosidic bond types, structure, solubility, viscosity[5]，especially with polysaccharide derivatives are closely related, such as sulfuric acid ester, phosphate esterification and acetylation, carboxymethylation, carboxyethyl, alkylation, ammoniation, iodide, each has different effect for its biological activity.
Immunotherapeutic Prospects of Infection diseases[J].Berlin,Springer-Verlag, 1990, 38(9): 23-51 [7] Qing Dong Shi, Xian Ming Jiang.Toxicity un-cell anti-tomorof Polysaccharide structure and activety[J].China medicine chemistry joumal , 1993,10（12）：222-228

Table 1 Different thermal radiation intensity and the damage / failure criterion thermal radiation intensity damage degrees to the buildings or equipment personnel injury 37.5KW/m2 operating equipment and buildings all damaged 1% dead within 10 seconds, all dead within1 minute 25 KW/m2 the minimum radiation intensity to ignite the timber, and deform the steel structure equipment under the normal circumstance seriously injured in 10 seconds, all dead within 1minute 12.5 KW/m2 the minimum radiation intensity to melt the plastic under the normal circumstance suffered minor injuries in 10 seconds, 1% dead within 1 minute 4.0 KW/m2 glass broken after a long time radiation pain after radiation more than 20 seconds, but not injured 1.6 KW/m2 no harm no harm 2.
The fire protection embankment in the tank area is reinforced concrete structure.
The passersby less than 4 meters away from fire dike on the road will die in one minute. 3) When the distance from designated target position to center of pool fire is less than 21.4m, the steel-structure equipments and buildings in this range will be destroyed, and all people will die within one minute.
Material data sheet of Chemistry and Chemical Engineering[M].Beijing,Chemical Industry Press, 2002:P146-147

The ABO3-type structure could be doped at A-site, B-site or co-doped at A-site and B-site with low-valence ions to generate oxygen vacancy for oxygen-ion conductivity [3].
The immediate XRD test shown in Fig.1 (d) indicates that GCAO with orthorhombic structure demonstrates no XRD changes and exhibits adequate stability.
Fine GCAO powder with orthorhombic structure demonstrates sufficient structural stability from low to high temperature, adequate chemical stability against reducing atmosphere and desirable thermal stability in air up to 1200 oC according to XRD and TGA results.
Journal of Materials Chemistry, 2000, 10:1829 [5] Lybye D, Poulsen FW, Mogensen M.

Before the measurements, silver paste was applied to the surfaces of the tablets to create a flat capacitor structure.
The previously assumed glass-like structure covering the grains can be seen in some spots in SEM images for samples with Bi2O3 and B2O3.
The initially hypothesized glass shell-like structure was observed only in samples containing Bi2O3 and B2O3.
Madden, Physical Chemistry Chemical Physics, 9, 1736 (2007)

In this method, the metal powders are melted and rapidly solidified for each layer, until it forms the programmed three-dimensional structure [2].
There are no cellular or dendritic structures and carbide formation found on the etched surface [14].
The fully dense built structure having no observable cracks was retained as displayed in Figure 4a.
Saeidi, “Stainless Steels Fabricated by Laser Melting Scaled-down Structural Hierarchies and Microstructural Heterogeneities”, Stockholm University, Department of materials and environmental chemistry, Stockholm, Sweden, 2016 [29] Y.

In this paper we applied PLD to obtain multi-structures of the type HA/Ti/TiN/Si.
In the first application, a multi structure of the type HA/Ti/TiN was grown on a silicon (100) substrate.
[9] Elliot J.C., Structure and Chemistry of the Apatites and Others Orthophosphates, Elsevier, Amsterdam, (1994)