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We assumed that the porous structure has close relationship with the temperature.
Too low or too high temperature did not favor the formation of porous structure [10].
So the addition of hydrofluoric acid wouldn't affect the O–P–O structure.
[4] Mohammad A, Zanjanchilayla Abdol, and Lahi: Journal of Inclusion Phenomena and Macrocyclic Chemistry Vol. 39(2001), p. 151-157
Wilkinson: Advanced Inorganic Chemistry,5th ed., John Wiley and Sons, New York, (1988)

Preparation And Characterization Of New Oxyfluoride Phases (Ba,Na)(Ti,Mg)(O,F) Djahida Talantikite-Touati1,a , Laldja Benzïada2 1Department of Chemistry, Abderrahmane Mira University, Bejaïa, Algeria 2Faculty of Chemistry, USTHB, P.O.
Its structure was determined by Megaw [1] and confirmed by several authors.
BaTiO3 undergoes a series of structural phase transitions, from ideal paraelectric cubic perovskite structure to the ferroelectric of tetragonal (120 °C), orthorhombic (5 °C) and rhombohedral (-90 °C) structure [2].
The aim of ours works since twenty years is the search of new oxifluoride ceramics with perovskite structure [9] for electronic applications.

The magnetic micro-sphere is generally the structure of core-shell [5-6], magnetic particles are homogeneously encapsulated in a hydrophobic polymer, which keep away water-soluble components from the magnetic particles [7].
The typical characterization of IPN has network or cross-linking structure [8].
The morphology and structure of the magnetic cross-linked composite micro-spheres were observed by Hitachis-570 transmission electron microscope (TEM).
The chemical composition and structure of magnetic cross-linked composite micro-spheres were analyzed by Infrared spectroscopy (FT-IR, Nicole Avatar, 360).
Wang: Chemistry of Functional Polymer Materials ( Chemical industry press, Beijing, 1996) [12] A.V.

Effect of Reoxidation Temperature on Electrophysical Properties of High-TC Barium Titanate-Based PTCR Ceramics Tatiana Plutenko1, a, Oleg V’yunov1,b 1 Department of Solid State Chemistry, Vernadskii Institute of General and Inorganic Chemistry, 32/34 Palladina ave., 03142 Kyiv, Ukraine atatiana_plutenko@email.ua (corresponding author), bHvyunov@ionc.kiev.uaH Keywords: PTCR, barium titanate, reoxidation, resistivity, ceramics.
At room temperature, BaTiO3 adopts a tetragonal perovskite structure and is a ferroelectric with high permittivity.
The structure parameters were refined by the Rietveld fullprofile analysis.
The parameters of the crystal structure of the ceramic samples were determined using Rietveld full-profile X-ray analysis (Fig. 1).
Yuan, Structure and piezoelectric properties of Bi0.5Na0.5TiO3–Bi0.5K0.5TiO3–BiFeO3 lead-free piezoelectric ceramics, Mater.

However, the impact strength for resins modified with the PBS ratio of 15:0, 0:15, was no increase in certain, this is probably the result of coordinating role of forming interpenetrating network structure.
Reference [1] Bouer RS, Epoxy Resin Chemistry, Advances in Chemistry Series 114, American Chemical Society, Washington DC (1979)

Analysis method with reference to the routine analysis of agricultural soil chemistry method[2]. 2 Results and Discussion 2.1Temperature Changes Temperature is important parameter to evaluate the effect of compost parameters,The reactor temperature changes reflect the change of microorganism activity in fermentation tank,Fermentation tank temperature rise is the result of microbial metabolic heat accumulation,In turn,It determines the metabolic activity of microorganisms.Generally considered,fermentation tank temperature under the condition of 55 ℃ could keep more than 3 d, can kill the piled material contained in the pathogen, and then meet the compost and compost maturity requirements of hygiene index[3].
Fig.4 Composting process germination index changes After the compost volume and the weight reduce 1/3-1/2, composting product structure is loose, no smell, color dark.
[2]Agricultural Chemistry Specialty Committee of Soil Science Society of China.Soil and agricultural chemical analysis method,Beijing:Science press, 1983

All the contact geometry is a triangle structure with three gold atoms, and the terminal thiol anchor for each molecule locates at a hollow site, where a strong chemical bond is formed between each sulfur atom and the gold atoms, while the carbons of the terminal methyl group are positioned above the middle of the triangle (see Figure 1).
Wang, The Journal of Physical Chemistry.
Luo, Quantum Chemistry for Molecular Electronics (Sweden: Royal Institute of Technology) QCME-V1.1. (2006).

After thermal cyclization carbonyl group disappeared in the FT-IR spectrum of PBO, which indicated the molecular structure had been transferred from PHA to PBO polymer.
Progress in Chemistry, 2005, 17(6): 1001
Journal of Polymer Science Part A: Polymer Chemistry, 2008, 46(24): 8159-8169.

This paper introduce a substation integrated automation control system of 220kV structures, characteristics and functions of the system, which discuss and analysis the engineering problems in practical application and points out the system still must perfect place, and put forward to some suggestions of the system construction.
The sub-network structure makes communication controller have more time for processing of information, and make the flexibility of the system can be improved.
Diagram is as follows: substation UPS The whole system structure configuration and dual turn difficulties.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

Although these AIE particles are different in structure (see Fig. 2), they all have multiple rotatable or vibrable structure units.
Overall, AIE materials have complex chemical structure [14].
Materials Chemistry Frontiers
Topics in Current Chemistry, 2021, 379(4)
The structure and function of fluorescent proteins[J].