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X-ray diffraction (XRD) patterns and high magnification transmission electron microscopy (HRTEM) images showed that the nanowires were polycrystal structure.
Not only the structure but also the morphology of product could be selectively controlled via this method.
All the peaks in Fig. 1A can be readily indexed to the monoclinic structure LaPO4 (cell constants a= 6.8 Å, b=7.0 Å, c= 6.4 Å; JCPDS Card No. 84-0600).
The morphology and crystal structure of RePO4 nanowires were also examined by TEM and HRTEM.
Chen: Chemistry Letters, Vol. 33(2004), p. 1448

To show the crystalline structure quality, the variation of crystal lattice parameters extracted and a Wurtzite hexagonal structure with a preferred orientation confirmed using a BRUKER-AXS X-ray diffraction type D8.
The ZnO thin films have generally a Wurtzite hexagonal structure.
This distance is equal to c/2 for the (002) plane in the Wurtzite hexagonal structure.
Zeng, Epitaxial ZnO nanowire-on-nanoplate structures as efficient and transferable field emitters, Adv.
Bououdina, Effect of Deposition Temperature on Structural and Optical Properties of Chemically Sprayed ZnS Thin Films, Procedia Chemistry 19 ( 2016 ) 485 – 491 [25] E.

The structure of NrGO is a flat sheet structure, which was the result of deformation upon the exfoliation and restacking processes.
Materials Chemistry and Physics 212 (2018) 131-137
Materials Chemistry and Physics 212 (2018) 131-137
Materials Chemistry and Physics 211 (2017) 13-17
Materials Chemistry. 1 (2013)1821-1826 [30] K.

Formation Causes of Hydrogen Sulfide in Coal Mass Formation Mechanism of H2S include: biodegradation, microbial sulfate reduction, thermal decomposition chemistry, thermochemical sulfate reduction and magmatic origin[17]-[24].
The gas generated in this way are mostly native biogenic gas, it is in the early stages of coalification, from a relatively low temperature and shallow mining depth of peat or peat bog environment of low rank coal (lignite), through a series of complex bacterial decomposition the process generated by the early coalification coal seam or peat contains a lot of water, accounting for a considerable number of coal and rock porosity, adsorption capacity at this time protistsgenerated gas in coal seams, and most of biogenic H2S and CO2 etc. may be dissolved in the formation water, escaping from the coal seam at the subsequent compaction and coalification, and microstructure of early coal has not been fully developed for the accumulation of gas in the structure, is generally believed that early native biogenic formation of H2S are not largely retained within the coal seam, and therefore H2S content of such scale and causes will not be great.
Therefore, the mine does not have the conditions to generate thermal chemistry of H2S.
And microstructure of early coal has not been fully developed for the accumulation of gas structure.
Longtan Coal H2S anomaly in Maokou Permian limestone in the upper part of the group of gray, light gray, thick-bedded limestone, rose quartz, hard, dense, containing local flint, thick 16.36 ~ 36.55m, its top relatively developed fissures within 10m, compared with core broken, calcite dendritic mesh; the middle is deep, thick layer of dark gray argillaceous limestone, rich in biological and biological debris stirred structure, thickness 8.43 ~ 38.82m; the lower part is brown and gray, gray limestone, rose quartz, and calcite veins containing chert nodules.

Results and Discussion 3.1 Chemical structure and morphology Composite membranes were fabricated using DIPS technique.
Journal of Materials Chemistry A, 1 (9), (2013), 3101-3111
Industrial & Engineering Chemistry Research, 54(44), (2015), 11188-11198
Journal of Materials Chemistry A, 3(5), (2015), 2065-2071
Journal of Materials Chemistry A, 2(34), (2014), 13772-13782

The process flow is shown in Figure 1. 3 Results and Discussion 3.1 Impact of Doping on the Crystal Structure of Nanorod Arrays In order to study the impact of aluminum-doping on the crystal structure of nanorod arrays, we prepared several kinds of ZAO nano-array films which are doped respectively with 1%, 3%, 5%, 7% of aluminum and conducted XRD analysis of the structures of these ZAO nano-array films with different aluminum-doping proportion, among which the structure of ZAO nano-array films doped with 5% of aluminum is shown in Figure 2.
ZAO has the hexagonal wurtzite-type ZnO structure, for all the diffraction peaks in the figure are fully consistent with the standard PDF card of hexagonal wurtzite-type ZnO, a small amount of Al causing no changes in the crystal structure of ZnO.
The electron diffraction in the selected area shows that ZAO nanorods are of single crystal structure, with uniform growth along the [002] direction, the diameter being about 80nm, the length more than 1.5 μm, and the length-diameter ratio greater than 20.
Journal of Physical Chemistry B, 2006, 110: 20263-20267
Journal of Materials Chemistry, 2002, 12: 3773-3778.

Theoretical Study on Electronic Structures and Spectroscopic Properties of Indene-C60 Monoadduct (ICMA) Zhanchun Xu 1, a, Hongsen Zhang 2,, Zhe Li 2, Xueshun Yang 2 ,Gang Zhang 3 1 Coal coke colligate Testing Center Hegang Entry － Exit Inspection ＆ Quarantine Bureau ,China. 2Modern Analysis, Test ＆Research Center Heilongjiang Institute of Science and Technology ,China 3Institute of Theoretical Chemistry Jilin University Changchun, China.
The geometrical structure data show that indene has little influence on C60.
Results and discussion Geometrical Structure.
So we have performed a frequency calculation to analyze the structure properties of ICMA.
Journal of Molecular Structure 919 (2009), 128–139

Additionally, as-received specimens were characterized with the scanning electron microprobe to quantify the chemistry within the ferrite grains relative to the bulk material.
The certified material chemistries are given in Table 1 for alloys 2205 and 2003 along with the calculated Cr and Ni equivalent concentrations (using Eq. 1 and 2).
Chemistry certifications for DSS 2205 and 2003 (wt.%) Alloy Fe Cr Ni Mo Mn Si N C S P Cu Al Creq Nieq 2205 Bal. 22.44 5.69 3.11 1.8 0.42 0.17 0.02 0.0004 0.03 0.43 NR 25.6 9.9 2003 Bal. 21.22 4.48 1.63 1.2 0.39 0.18 0.03 NR NR 0.13 0.01 22.9 9.2 NR=Not Reported A series of isothermal agings were performed to study the thermal stability of alloys 2003 and 2205.
Additionally, quantifying the embrittlement kinetics of lean grade weld filler metals, and of complex engineering structures (e.g., welds, their heat affected zones, and the effects of fabrication-induced plastic strain) are required to enable the application of these alloys to higher service temperature components.
This work shows the potential use of lean grade duplex stainless steels for elevated temperature applications, but additional work is needed to better understand and predict the embrittlement kinetics of both the wrought alloys and of complex welded structures.

A discussion of the inner structure of molecular complexes is included. π-Electron density distribution over the benzene ring and geometric structure of donor molecule determine the structure of molecular complex.
Structure complexes the p-phenylenediamine group are analogous to structure complexes of the aniline group.
The complexes of various groups are differed from own structure.
Romm, The Donor–Acceptor Bond Moscow, Chemistry (Moskva, Khimiya - in Russian), 1973
Pozharskij, Conception of π-superfluous in chemistry of heteroaromatic compounds, Chem.

The Synthesis and Characterization of N-Propyl Pyridine Tetrafluoroborate Lu Yu1,a, Peng Tian1,a* and Hongbo Zhang2,b 1College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China 2Laboratory Centre, Shenyang Normal University, Shenyang 110034, China aemail: tianpenglnu@sina.com, bemail: zhanghongbo2010@126.com Keywords: PP-BF4; room temperature ionic liquids; UV–spectrum Abstract: The halogenated hydrocarbon and pyridine are used in the synthesis of room temperature ionic liquid intermediates bromided N-propyl pyridine PPB, and the nuclear magnetic resonance instrument and the intermediate infrared spectrometer are used in chemical structure characterization, so it is determined that the synthesis is the room temperature ionic intermediates PPB.
We use infrared spectrometer for the structure characterization, it is proved that we have gotten PP-BF4 room temperature ionic liquids.
Introduction Nowadays, ionic liquids are gaining more and more interest in chemical research, and their potential in diverse fields such as catalysis, extraction technology, electrochemistry and analytical chemistry has been investigated and extensively reviewed.
Akai et al. described the structure of the cation-anion 1 : 1 pair in the gasphase via cryogenic neon matrix-isolation FTIR spectroscopy of evaporated ILs[7].
We use infrared spectrometer for the structure characterization, it is proved that we have gotten PP-BF4 room temperature ionic liquids.