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Characterization The characterization was carried out to determine the crystal structure, functional groups, magnetic properties, and mercury adsorption.
The crystal structures were examined by an X-ray Diffractometer (XRD) (E’xpert Pro).
The databases were obtained from the Inorganic Crystal Structure Database (ICSD) 30860.
Lee, Magnetic antimicrobial nanocomposite based on bacterial cellulose and silver nanoparticles, Journal of Materials Chemistry. 20 (2010) 6948
Cao, PVP modified Fe3O4@SiO2 nanoparticles as a new adsorbent for hydrophobic substances, Journal of Physics and Chemistry of Solids. 133 (2019) 28–34

Platinum Porphyrin -Au-NPs Hybrid Material for Optical Detection of Hydrocortisone LASCU Anca1a, FAGADAR-COSMA Eugenia1b* 11Institute of Chemistry-Timişoara of Romanian Academy, 24 M.
Figure 1: Structure of hydrocortisone (a) and of Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) (b) 1.
The AFM image (Fig. 3b) reveals small triangular structures, capable to aggregate in large architectures by overlapping face to face (H-type process) and also shoulder by shoulder (J –type process) to generate multi-layers of rhombic-based prisms.
Acknowledgments Authors are grateful to UEFISCDI-ROMANIA because this work has been partially supported by 76 PCCDI Project ECOTECH-GMP belonging to PNIII-Future and Emerging Technologies and to Romanian Academy through Programme 3/2018 of Institute of Chemistry Timisoara of Romanian Academy.
Michalska, Electronic structure and vibrational spectra of cis-diammine(orotato)platinum(II), a potential cisplatin analoque: DFT and experimental study, Chem.

Varela1. 1 - Chemistry Institute, Universidade Estadual Paulista (UNESP), Araraquara-SP, 14801-970, Brazil, E-mail - alezipo@yahoo.com 2 - CMDMC/LIEC/ DQ UFSCar, Av.
Currently most of the optical components which are essential for integrated optical devices, such as modulators and switches, have been fabricated from Ti in-diffused or proton exchanged bulk LiNbO3 (LN) waveguide structures.
Sapphire substrates have been used for the deposition of LiNbO3 thin films for optical applications because of their low refractive indices and similar crystal structure, despite their lattice mismatch and thermal expansion coefficient different from that of LiNbO3 [11].
EXPERIMENTAL DETAILS Lithium carbonate (Li2CO3 - Montedison - 99.5%), niobium oxide (Nb2O5 - Aldrich - 99.9%) and magnesium carbonate ((MgCO3)4Mg(OH)2.5H2O - Chemistry Kinetics - 99.8%) were used as purchased.
It can be observed that the top surface had a very good crystallographic structure whereas the structure was distorted at the substrate interface.

Macromolecular structure can be better understood and the properties be more available for use with the help of the studies on the parameters and the correlation between each other [18].
Christian Roy et al. found that the resistance of carbon black filled composites was influenced mainly by the specific surface area, the structure and the surface chemistry of carbon black [15,16,17].
Electrical conductivity of thermal carbon blacks influence of surface chemistry [J].
Carbon black-filled PET/HDPE blends：effect of the CB structure on rheological and electric properties [J].
Electrical behavior and structure of polypropylene/ultrahigh molecular weight polyethylene/carbon black immiscible blends [J].

Result and Discussion Effects of concentration of SPEEK/cloisite dope on fiber structures.
As the concentration increased to 0.30 wt%, the fibers started to lose the structure and became highly beaded and perforated.
Hence, the formation of beads and non-uniform fiber structure at 0.05 wt% occurred where surface tension had greater influence than viscoelastic force.
Journal of Materials Chemistry, (2010). 20(30), 6282-6290
Journal of Materials Chemistry, (2012)22(35), 18646-18652

However, on account of the high stability of methane in its molecular structure, low-temperature oxidation of methane is difficult.
In addition, the pure sample of bulk La2MnNiO6 have many narrow and intensive high diffraction peaks, which means there is a well-crystalllized structure in the pure sample.
The peaks at 578 oC can attributed to the further reduction of nickel from a Ni2+ to a Ni0 oxidation state with the destruction of the perovskite structure.
The peaks at 887 oC can be assigned to the complete reduction of manganese to a final oxidation state (Mn2+), which means MnO and La2O3 are formed and there has a loss of the perovskite structure [15].
Shi: submitted to Journal of Natural Gas Chemistry (2008)

Properties and characterization of chitosan/collagen/PMMA composites containing hydroxyapatite Alina Sionkowska1, a*, Beata Kaczmarek1, Paulina Trokowska1, Iulian Antoniac2 1Nicolaus Copernicus University, Faculty of Chemistry, Department of Chemistry of Biomaterials and Cosmetics, Gagarin 7 street, 87-100 Toruń, Poland 2University Politehnica of Bucharest, Faculty of Materials Science and Engineering, Group of Biomaterials, Splaiul Independentei 313, Bucharest, Romania aas@chem.umk.pl Keywords: chitosan, collagen, PMMA, hydroxyapatite, mechanical properties, thermal analysis Abstract In this paper several properties of new materials based on polymer blends were studied.
Analysis of natural structures causes the effectiveness of constructed materials [7].
In bones there are organic and inorganic parts, well organized in complex hierarchical structures.
Such a structure can be tentatively replicated in vitro using appropriate polymers and inorganic particles [9].
The goal is to rebuild the native structures and functions of the replaced tissue [27].

The crystallinity and structure of the metal nanowires were analyzed using X-ray Diffraction (XRD, Shimadzu XRD-7000) utilizing Cu Kα radiation.
XRD measurement was performed to analyze the structure and crystallinity of the Ag NWs.
Ahmad, Recent development in hybrid conducting polymers: Synthesis, applications and future prospects, Journal of Industrial and Engineering Chemistry, 60 (2018) 53-84
Yacaman, Corrosion at the nanoscale:  The case of silver nanowires and nanoparticles“ Chemistry of Materials 17 (24), (2005) 6042-6052 [15] D.C.
Joo et. al, Silver Nanowire-embedded PDMS with Multiscale structure for highly sensitive and robust flexible pressure sensor.

Pizon3,c, PRANEET Opanasopit4,d and NOPPARAT Nuntharatanapong1,e* 1Department of Pharmacology, Faculty of Pharmacy, Silpakorn University, Thailand 2Department of Chemistry, Faculty of Science, Silpakorn University, Thailand 3Department of Biological Sciences, MSU – Iligan Institute of Technology, Philippines 4Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Thailand awass.pmk@gmail.com, bpanupun.lim@gmail.com, cjhoanrheapizon@gmail.com, dopanasopit_p@su.ac.th, enuntharatanapon_n@su.ac.th Keywords: melanin, tyrosinase, anti-melanogenic activity, whitening agent, p-chlorophenyl benzyl ether Abstract.
Their main depigmenting mechanism is to competitively inhibit tyrosinase activity and their chemical structures (Fig.1) resemble the structures of tyrosinase substrates.
The chemical structure is presented in Fig. 1.
Chemical structures of tyrosinase inhibitors.
P-chlorophenyl benzyl ether (Cl-benz) was supplied from Department of Chemistry, Faculty of Science, Silpakorn University, Thailand.

Increasing time did not result in any significant changes of the product appearance and structure.
The synthesis temperature in this case was sufficient for the beginning of ZrO2-Y2O3 solid solution crystal structure formation.
Thus, the final crystalline structure of ZrO2-Y2O3 solid solutions is determined solely by the presence of Y2O3 stabilizing additive and does not depend on the conditions of combustion synthesis.
Shavkunova, Microwave radiation and the intensification of chemical processes, Chemistry, Moscow, 2003
Zoryn, Microwave engineering application in laboratory research and industry, Journal of Applied Chemistry. 75 (2002) 1409-1416.