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Contrarily, tricalcium phosphate cement shows major drawbacks which produce dense structure after set [4].
There were several studies reported on efforts to create porous structure inside the set TCP cements [5-10].
However, this technique produced rapid setting reaction of α-TCP foam granules although it created porous structure after set [6].
Deba, Tailoring brushite for in situ setting bone cements, Materials Chemistry and Physics 130 (2011) 1139–1145
Metoki, Calcium phosphate bioceramics: A review of their history, structure, properties, coating technologies and biomedical applications, Materials 10 (2017) 334

Befrui[2] provided a combined experimental and computational investigation of distinct “jet-string” spray break-up structure of conical sprays of the high-pressure outward-opening gasoline direct injection nozzles.
To resolve unstable interfacial wave instability phenomena that were expected to be crucial in the perturbation and breakup of the conical liquid sheet and formation of the jet-string structures, the computational mesh has 1,870,000 cells and affords a minimum spatial resolution 4 μm within the ambient.
Fig.3 Sketch map of the computing mesh Fig.4 Velocity and fluid volume faction in spout Boundary Conditions The present calculation presumed chemistry and phase conversion do not exist.
The structure of the tested nozzle is same as the present study and the fuel pressures are 0.9MPa and 1.8MPa, then the fluid volume flow rates were 4370ml/min and 6140ml/min respectively [5].
LES Simulation of the Internal Flow and Near-Field Spray Structure of an Outward-Opening GDI Injector and Comparison with Imaging Data[J], SAE TECHNICAL PAPER SERIES, 2008-1

Introduction The melt viscosity, which is considered as important fundamental data for researching the liquid structure of metal and structural evolution in the cooling process, was always concerned by researchers.
Viscosity is an important physical property which is more sensitive to the melt structure and friction between atoms and atomic clusters [14, 15].
So the changes of molten alloy structure must consequentially lead to changes of the molten alloy viscosity.
When the changings of the melt structure have happened massively in some specific temperature, the corresponding viscosity value change remarkably and the discontinuous points on the curve of lnη ~1/T curve will be found.
ISIJ International Vol. 33 (1993), p. 251 [8] Moelwyn-Hughes E A: Physical Chemistry (Oxford Pergamon Press, UK 1961)

Of the SPH-IFRs, the caged bicyclic phosphate named 1-oxo-4-hydroxymenthyl-2,6,7-trioxa-1-phosphabicy[2,2,2] octane (PEPA) [8] was generally used to build the phosphorus-based structure due to its high phosphorus content of 17.2% and excellent thermal stability.
On the other hand, the silicon-based structure were commonly siloxane and carbosilane, which were incorporated by the reaction of their functional groups such as Si-Cl, Si-OH, Si-CH=CH2, etc.
The structure of this new IFR was characterized by FTIR.
This indicates that the difference in their fire resistance was scarcely contributed by the amount of carbonaceous char, but may be linked to other properties of the layers, such as structure, density, morphology or stability.
Hamerton, Recent developments in the chemistry of halogen-free flame retardant polymers.

The structures processed by electrospinning are nanoscale fibers with high porosity, high degree of surface area, and other benefits, resembling the topographic features of the ECM, which can be used as scaffold to promote cell migration and proliferation [2-6].
Fig 1(b,c,d) shows the morphology of PVA/HA nanofibers, the nanofibers in all groups had random morphology with an interconnected porous structure, and have a majority of the diameters in the range of 200-900nm.
Conclusions (1)The electrospun PVA nanofibers had porous structure and mimiced the natural extra cellular matrix (ECM) structure. (2) As the content of HA increased, thick fibers and adhesive phenomenon were appeared, but the morphology of the composite scaffolds was not affected. (3)There was strong interaction between PVA and HA by hydrogen bonds.
Joshi, “Polymerized organic—inorganic synthesis of nanocrystalline zinc oxide,” Materials Chemistry and Physics, Vol.105, issue2-3, 354-361, 2007

With modes with burning temperature 1150 °C the formed clinkers generally became less reactive due to better consolidation of created belite structure.
With the highest burning temperature of 1150 °C the described events were less significant due to better consolidation of belite structure causing that β-C2S is in its early phase almost not reactive.
Therefore the performed modification with potassium ions of sample B2 and burning mode 1050/5 can be considered for an optimum obtained so far because with lower content of K2O and softer burning modes the complete synthesis of dicalcium silicate does not occur, on the contrary with harder burning modes the structure consolidation occurs and thus clinker reactiveness is reduced.
Also the hardest burning modes are not convenient because they produce belite with well consolidated structure making it almost not reactive.
Moore Physical Chemistry, Praha, SNTL 1979 [2] URL: < http://database.iem.ac.ru/mincryst/> [3] W.

The crystal structure of In2Se3 is commonly a zinc blende or defect wurtzite with highly ordered vacancies, where each atom is located at the zinc blende or wurtzite sites, and one third of the cation sites are occupied by the structural vacancies [5].
The zinc blende structure consists of rather loose stacks of covalently bonded layers that include five atomic layers of Se–In–Se–In–Se that are held together by van der Waals bond.
Figure 1 Structural models of In2Se3: (a) zinc blende structure (α-phase) with planar cationic vacancy ordering and (b) defect wurtzite structure (γ-phase) with helical cationic vacancy ordering.
Bernede, Materials Chemistry and Physics 62 (2000) 84-87

The other researcher was using liquid moulding techniques to fabricate metal foam composite sandwich structure is gaining recognition for high performance applications in a variety of commercial and defence industries [8,9].
Based on the Table 1, the density of HDB flexible (F) is higher than density of HDB rigid (R) which is 1.408 and 1.300 g/cm3 respectively; due to the porosity structure of both biopolymer samples.
The result is clearly show that sound absorption is depends on the morphology structure of outer surface material.
It can be summarized from the mass, density and characteristic of the HDB structure as shown in SEM were influence the sound absorption of the layups system.
Frish, Polyurethanes Chemistry and Technology, John Wiley & Sons (1962) [7] H.

Synthesis of ZSM-5 zeolite without organic template Zhaohua Yin1,a, Yong Chen1,b, Zhongwei Wang1,c, Ying Xing1,d, Xiujuan Tian1,e, Qing Yu1,f* and Changgong Meng2,g 1College of Material Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China 2 College of Chemistry，Dalian University of Technology，Dalian 116024，China a 1028527123@qq.com, b cy121712@163.com , c wangzhongwei@fusilinchem.com, d 178242698 @qq.com, e 17132755 @qq.com, f laura9751@163.com, gcgmeng@dlut.edu.cn KeyWords: ZSM-5; Synthesis; template-free; hydrothermal Abstract.
The sample with crystallization time of 10 h exhibited diffraction peaks corresponding to MFI structure without any detectable impurities.
Fig.2 FTIR spectrum of samples S-10 Fig.3 SEM imagines of samples with different crystallization time FTIR was used to further characterize the structure of sample S-10, and result was shown in Fig. 2.
This result together with those in XRD demonstrated the formation of MFI structure.
XRD, SEM and FTIR were employed to examine the structure and morphology of obtained samples.

The structure of tobermorite (5CaO·6SiO2·5H2O) is orthosymetrical and consists of the centrally layer of Ca2+ octahedrons which is surrounded by continuous chains composed of silicate tetrahedrons.
Small leaf-shaped crystals of this mineral are mutually well intergrown and form a compact skeletal structure of the autoclaved aerated concrete. [7] Fig.1 Structure of tobermorite [7] Matsui et al. [1] in his work claims that tobermorite can be formed in two ways.
Ramamurthy, Structure and properties of aerated concrete: a review, Cement and Concrete Composites, Volume 22, Issue 5, October 2000, Pages 321-329, ISSN 0958-9465 [7] D.
Zaoui, Understanding of bonding and mechanical characteristics of cementitious mineral tobermorite from first principles, Journal of Computational Chemistry, Volume 32, Issue 2, 30.