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Soboyejo2,3,5* 1Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, USA. 2Princeton Institute of Science and Technology of Materials (PRISM), Princeton University, Princeton, New Jersey 08544, USA. 3Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA. 4Department of Chemistry and Chemical Technology, Bronx Community College, Bronx, New York, 10453, USA. 5Department of Material Science and Engineering, African University of Science and Technology, Abuja, Federal Capital Territory, Nigeria.
Its physical structure, composition and morphology closely resemble human enteric viruses, making it a good model for poliovirus.
This was used to determine the structure of the iron (III) oxide.
Comparison of the flexural strengths of iron oxide doped ceramic with respect to firing temperature. 4.2 Flow Through Porous Structures.
Future work will also include experiments using bacteriophage or virus models with different IEPs and structures in order to better characterize the viral filtration ability of the Fe-CWFs.

The structure of this modified coating is discussed.
Glow Discharge Mass Spectroscopy (GDMS) measurements and microscopic examinations were conducted in order to study the microstructure and the chemistry of this diffusion coating.
The zirconium modified nickel aluminide coated specimen exhibit a single phase (betaNiAl) structure without any precipitate (Fig. 5).
Moreover, during the transformation of the alumina crystal structure from monoclinic (θ-Al2O3 phase, density = 3,64) to hexagonal (α-Al2O3 phase, density = 3,97) at 1100°C, the volume reduction (∼ 10%), resulting in the higher density of the α-phase, contribute to the formation of additional mechanical stresses in the oxide.
Finally, an additional interest must also be taken in the grain structure of the bond coat prior to oxidation.

Introduction Oxide nanomaterials play an important role in the field of physics, chemistry and material science [1, 2].
Bulk oxides are generally stable systems with well-defined crystal structures.
Fe3O4 crystal structure consists of face-centered cubic (fcc) unit cells with an inverse spinel structure.
Amine pegylated starch coated MNPs are suitable for magnetic tumour targeting using NHS chemistry having end products (D5 and D20).
Yurkov, Magnetic nanoparticles: Preparation, structure and properties, Russ.

According to its definition, a clan is a group of families that are thought to have a common ancestry and are recognized by significant similarities in tertiary structure together with conservation of the catalytic residues and a catalytic mechanism [2].
Oligosaccharides, galactomannans, glycoproteins and glycolipids, containing α-galactosyl groups in their structures are widely distributed in plants [5, 6] and animals[7].
GM2 and GM3 are similar in structure to G3M3, which has a terminalα-galactosyl residue, and GGM5 is similar to G3M4, which has side-chain α-galactosyl residues.
In addition, fundamental knowledge on enzyme properties and structures is also necessary for effective utilization and further improvement of the enzyme properties.
[9] Timell TE, “Recent progress in the chemistry of wood hemicelluloses,” Wood Sci.

In other research, the influence of transition metal oxide nanoparticles on the basis of TiO2, Fe2O3 and ZnO on the morphological structure, glass transition temperature, decomposition temperature and impact strength of epoxy coatings was studied [26].
The introduction of aluminum and copper nanoparticles into epoxy matrix provides the formation of finely crystalline and less defective structure of the polymer which contributes to the improvement of the crosslinking of the epoxy resin molecules and results in the improvement of mechanical properties.
May, Introduction to epoxy resins, in: Epoxy Resins, Chemistry and Technology, 2nd ed.
Zhang, Research of nanocomposite structure of boron nitride at proton radiation, IOP Conf.
Krukovskii, Structural characteristics of copper nanoparticles produced by the electric explosion of wires with different structures of metal grains, Curr.

Direct Sunlight Active Sm3+ doped TiO2 photocatalyst Binu Naufal, P.K.Jaseela, Pradeepan Periyat* Department of Chemistry, University of Calicut, Kerala, India - 673635.
However, all these method required expensive chemicals, templates for structure direction of TiO2, harsh chemical/heat treatment for removal of the template to obtain pure TiO2 and induce crystallinity into TiO2.
From the XRD pattern it is confirmed that both TiO2and Sm3+doped TiO2 are in anatase structure and there is no change in relative intensities of all peaks in the TiO2 and Sm3+ doped TiO2.From Figure 1C,XRD patterns of Sm3+ doped TiO2 at calcination temperature of 800ºC shows a doublet at 2θ= 53.83 and 55.12º corresponding to the planes (105) and (211) where as in the TiO2 sample this is turned to singlet peak at 2θ= 54.01ºcorresponding to (105) plane in the Sm3+ doped TiO2 sample.
From these results of XRD spectra, it is clear that both TiO2 and Sm3+doped TiO2 consist of only anatase structure ,it may be due to the formation of Sm-O-Ti bond which inhibit the movement of Ti atoms for the phase transformation [17] and that of bare TiO2 may be due to the addition of acetic acid while synthesis, which follows a condensation pattern producing linear chain, enclosing small pores in the gel network and a stable sol is obtained after hydrolysis and the relative intensity of dominant (101) peaks increased significantly in Sm3+ doped TiO2 with respect to the TiO2.
XRD pattern of A) TiO2 B) Sm3+doped TiO2at a) 300 b) 500 c) 700 and d) 800 oC From these results of XRD spectra, it is clear that both TiO2 and Sm3+doped TiO2 consist of only anatase structure ,it may be due to the formation of Sm-O-Ti bond which inhibit the movement of Ti atoms for the phase transformation [17] and that of bare TiO2 may be due to the addition of acetic acid while synthesis, which follows a condensation pattern producing linear chain, enclosing small pores in the gel network and a stable sol is obtained after hydrolysis and the relative intensity of dominant (101) peaks increased significantly in Sm3+ doped TiO2 with respect to the TiO2.

Ma improved the structure and performance of the anodic oxide film by changing the micro-morphology and surface flatness of the surface of the aluminum material [4].
In sulfuric acid anodic oxidation process of preparing porous anodic alumina membrane, Li used the high temperature annealing to pre-treat and secondary oxidate the aluminum matrix in order to enhance the structure order degree of anodic alumina membrane[5].
Although several abrasive particles are irregular hexahedral structure, the ceria abrasives are mostly flocculent shale structure and they are easy to break and deform under the pressure.
Yoon, Reduced reflectivity and golden color of porous anodic aluminum oxide nanostructures filled with maghemite nanoparticles, Journal of Industrial & Engineering Chemistry. 24 (2015) 293-296

Spent Garnet and Concrete Radzi Samsunanwar1, a, Hasliyana Fatin Rebzuwan2, b and Amelia Md Som1,c* 1Green Chemistry and Sustainable Engineering Technology Cluster, Malaysian Institute of Chemical and Bioengineering Technology (MICET), Universiti Kuala Lumpur, Bandar Vendor Taboh Naning, 78000 Alor Gajah, Malaysia 2Ranhill Water Technologies Sdn Bhd.
Malaysian shipyard industry alone imported over 2000 million tons of garnets for abrasive process in 2013 [3] Garnet in general represent a group of complex silicate minerals, have a crystalline structures classified in the isometric crystal system and identical chemical compositions.
Magnesia cement has three types of blends that depend on its intended application: 1. tec-cements with MgO << OPC primarily for concrete applications to improve durability and strength by increasing density, decreasing permeability, increasing internal dryness, and ensuring long-term pH and volume stability 2. enviro-cements with MgO » PC for improved waste immobilisation capacity due to brucite's decreased solubility and mobility, as well as its layered structure and lower long-term stable pH; 3. eco-cements with MgO >> PC for porous block applications with subsequent carbonation through uptake of CO2 and production of hydrated magnesium carbonates.
The reduction was suggested to be caused by the fineness of spent garnet particles, lacking appropriate gradient and shape to fill the pores and optimize the pores structure.
The spent garnet that was very fined in size may increase the surface areas for hydration to occur, furthermore the presence of fined garnet may provide route for water to reach the unreacted cement within C1.7SHx structure.

The matrix structure of the laminate is of great importance while considering composites, as they are responsible for binding fibers and transferring loads among them.
Q11=Q11cos4θ+Q22sin4θ+2Q12+2Q66sin2θcos2θ (5) Q12=Q11+Q22-4Q66sin2θcos2θ+Q12(cos4θ+sin4θ) (6) Q22=Q11sin4θ+Q22cos4θ+2Q12+2Q66sin2θcos2θ (7) Q16=Q11-Q12-2Q66sinθcos3θ-Q22-Q12-2Q66sin3θcosθ (8) Q26=Q11-Q12-2Q66sin3θcosθ-Q22-Q12-2Q66sinθcos3θ (9) Next, the total plate constitutive equation was used, which bridges the gap between the available number of equations and the unknowns and has the following relation: NM=ABBDεOK (10) Where, N is tension or compression stresses, M is bending stresses, K is plate curvature,εO is mid plane strains, A is the extensional matrix, B is the coupling matrix and Dis the bending matrix, collectively called as laminate stiffness matrices and are given by: Aij=k=1nQijkhk-hk-1 (11) Bij=12k=1nQijkhk2-hk-12 (12) Dij=13k=1nQijkhk3-hk-13 (13) Symmetric laminates are used as they have identical ply stacking structure above and below the mid-plane of the laminate.
Stresses increase when a core material is added, and the composite behaves as a sandwich structure.
Marks, Epoxy resins, Ullmann's Encyclopedia of Industrial Chemistry, 2000
Tamin, Damage and fracture of composite materials and structures, Springer, 2012

The reported that due to the cellular structure of foam concrete, water absorption of this material is very much lower than clay bricks.
The cellular lightweight concrete (CLC) bricks made with a mixture of cement, fly ash, and sand (optional) stable foam and special additives (if required) which will help to form unique cellular structure material.
Norlia et. al. [36] found that the density of lightweight foamed concrete made from waste clay brick has many advantages as it can reduce the dead load of structure and overall costing.
International conference on chemistry and chemical process IPCBEE, 10, 18-24
Effect of Composition on Structure and Mechanical Properties of Metakaolin Based PSS-Geopolymer.