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The scanning electron microscopy photos about three superfine powder exhibited that ultrafine barite particles were sheet structure, ultrafine ilmenite particles were small irregular lumps, and the ultrafine manganese tetroxide particles were spherical as shown in Fig. 2.
Ultrafine manganese tetroxide had better surface active, surface chemistry and wettability.

Sarwaruddin Chowdhury4,e 1Institute of Leather Engineering and Technology, University of Dhaka, Dhaka-1000, Bangladesh 2Glass Research Division, Institute of Glass & Ceramic Research and Testing, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205, Bangladesh 3BCSIR Laboratories Dhaka, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka-1205, Bangladesh 4Applied Chemistry and Chemical Engineering, Faculty of Engineering and Technology, University of Dhaka, Dhaka-1000, Bangladesh afarhadali72@gmail.com, bsaz8455@gmail.com, cmointanvir55@gmail.com, dshanta_samina@yahoo.com, esarwar@du.ac.bd *Corresponding author: Md.
Chieu D Tran, "Synthesis, structure and antimicrobial property of green composites from cellulose, wool, hair and chicken feather," 2016

Based on XRD pattern, it is seen that the peaks of quartz and mullite are not lost, suggesting that the immobilization of dithizon does not change the structure and crystallinity of CFA.
[14] Adamson, A.W., Physical chemistry of Surface, fifth Edition, John Willey and Sons Inc., New York. 1990

Morphological features and electrochemical properties of the hydrophobized sealed PEO-coatings on Al alloy EGORKIN Vladimir1,a, VYALIY Igor1,b, MINAEV Alexander1,2,c *, SINEBRYUKHOV Sergey1,e, GNEDENKOV Sergey1,f 1Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 pr. 100-letiya Vladivostoka, Vladivostok 690022, Russia 2Far Eastern Federal University, 10  Ajax Street, Build. 12, FEFU Campus, Russky Island, Vladivostok 690922, Russia aegorkin@ich.dvo.ru, bigorvyal@gmail.com, caminaev@mail.ru, dsls@ich.dvo.ru, esvg21@hotmail.com Keywords: Protective coatings, plasma electrolytic oxidation, wettability, hydrophobicity, aluminium, electrochemical impedance spectroscopy.
Wu, Ultrafast fabrication of rough structures required by superhydrophobic surfaces on Al substrates using an immersion method // Chem.

Finally, the weight loss was about 17% occurred between 324-618℃ and corresponds to a removal of crystalline water from bentonite as the silicate framework begins to shrink and layered structure of the montmorillonite mineral was collapsed [8].
Hato, Preparation and characterization of sodium alginate based oxidized multi-walled carbon nantotubes hydrogel nanocomposite and its adsorption behavior for methylene blue dye, Frontiers in Chemistry, 9 (2021).

It has an FCC crystalline structure (NaCl Type) and exhibits both covalent and metallic characteristics [1].
[24] Begin-Colin S, Girot T, Le Caer G, Mocellin A, J of Solid State Chemistry 2000; 149: 41

A thermal treatment for 2 hours at 750ºC (from room temperature) was applied to material B to increase its reactivity for alkaline activation by dismantling its crystalline structure and increasing the amount of amorphous phases.
Green Chemistry, Vol. 8 (2006), p. 763-780

The Effect of Low-Temperature Glow Discharge Nitriding of Duplex Stainless Steel on Absorption and Desorption of Hydrogen Bartosz Gołębiowski1, Tadeusz Zakroczymski2, Wiesław Świątnicki1,a 1)Warsaw University of Technology, Faculty of Materials Science and Engineering, Poland 2)Institute of Physical Chemistry, Polish Academy of Sciences, Poland a wswiatni@inmat.pw.edu.pl Keywords: ferritic-austenitic steel, surface layers, nitriding, hydrogen corrosion, hydrogen permeation, hydrogen diffusion Abstract: The effect of the nitrided layers produced on ferritic-austenitic stainless steel to hydrogen absorption and desorption was studied.
Taking into account the structure of the nitrided membrane one can concluded that the nitrided surface layer on duplex steel was a barrier for hydrogen desorption from the steel.

Phase Transition and Structural Defects in Complex Iron-Containing Oxide Glasses Probed By Positron Annihilation Taras Kavetskyy1,2,a*, Ruzha Harizanova3,b, Plamen Petkov3,c, Jakub Čížek4,d, Reinhard Krause-Rehberg5,e, Ondrej Šauša1,6,f, Bozena Zgardzińska7,g, Ivailo Gugov3,h, Arnold Kiv8,9,i and Christian Rüssel10,j 1Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia 2Drohobych Ivan Franko State Pedagogical University, Drohobych, Ukraine 3University of Chemical Technology and Metallurgy, Sofia, Bulgaria 4Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic 5Department of Physics, University Halle, Halle, Germany 6Department of Nuclear Chemistry, FNS, Comenius University, Bratislava, Slovakia 7Institute of Physics, Maria Curie-Sklodowska University, Lublin, Poland 8South-Ukrainian K.D.
The structure and especially the coordination states of the 3d-ions in the prepared glasses have still not been studied.

Isolation of triterpenoids from Catunaregam Spinosa Kedi Yanga, Yuejuan Lib, Li Gec and Zuzeng Qind School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004, China akdyang@163.com, b363642479@qq.com, c49745187@qq.com, dqinzuzeng@163.com Keywords: Catunaregam Spinosa; antifeedant activity; toxicity; triterpenoids Abstract.
Use of NMR, MS and sugar analysis gave structures of three triterpenoid saponins with branched monosaccharide chain as 3-O-[β-D-glucopyranosyl-(1→3)-β-D-6-O-methyl-glucuronopyranosyl oxy]-2β-hydroxy-olean-12-en-28-oic acid (1), 3-O-[β-D-glucopyranosyl-(1→2)-β-D-glucopyran -osyl]-olean-12-en-28-oic acid (2), 3-O-[β-L-rhamnopyranosyl-(1→3)-β-D-glucuronopyranosyl- (1→2)-β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl]-12-en-28-oic acid (3), and along with triterpenoids as Oleanolic acid (4), 3β,23-dihydroxy-olean-12-ene-28-oic acid (5), respectively.
On the basis of the data obtained, the structure of 1 was therefore established as 3-O-[β-D-glucopyranosyl-(1→3)-β-D-6-O-methyl-glucuronopyran -osyl oxy]-2β-hydroxy-olean-12-en-28-oic acid.
The structure of 3 was 3-O-[β-L-rhamnopyranosyl-(1→3)-β-D-glucuronopyranosyl-(1→2) -β-D-glucopyranosyl-(1→2)-β-D-glucopyranosyl]-12-en-28-oic acid.
The structures were identified as Oleanolic acid and 3β,23-dihydroxy-olean-12-ene -28-oic acid (Hederagenin) based on their NMR spectra.