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Online since: March 2015
Authors: Na Li, Jian Wang, Bao Dong Zhu, Qing Ming Meng, Shuang Zhang
The structure of grafted product was analyzed by FTIR and melt flow rate (MFR), die swell ratio (Dr) and water contact angles of the grafted product were tested.
The low surface energy and the non-polar molecular structure of PP lead to poor compatibility with additives and difficulty to dye.
The results showed that ultrasonic can shorten the reaction time, the structure and performance of the product had no significant changes compared with the environment of no ultrasonic.
The structure of grafted product was analyzed by FTIR and MFR, Dr and water contact angles of the grafted product were tested.
American Journal of Chemistry, 2012,2(5):7
The low surface energy and the non-polar molecular structure of PP lead to poor compatibility with additives and difficulty to dye.
The results showed that ultrasonic can shorten the reaction time, the structure and performance of the product had no significant changes compared with the environment of no ultrasonic.
The structure of grafted product was analyzed by FTIR and MFR, Dr and water contact angles of the grafted product were tested.
American Journal of Chemistry, 2012,2(5):7
Online since: August 2006
Authors: L.I. Kveglis, A.V. Kuzovnikov, I.V. Timofeev
The structures induced
by the self-organization process are known as 'dissipative structures'; this name was first given to
them by Prigogine [1].
Such atomic structures are typical for Tb-Fe alloys but not for Co-Pd ones.
The correlation between the nanocrystalline film structure and magnetic characteristics at the transition from disordered to regular structure is studied.
The periodic crystal lattice not necessarily grows in film structures, i.e., the length and arrangement of the short-range interatomic bonds not always coincide with those of the bonds in the regular structure.
Pearson, The Crystal Chemistry and Physics of Metals and Alloys, University of Waterloo, Wiley-Interscience, 1972
Such atomic structures are typical for Tb-Fe alloys but not for Co-Pd ones.
The correlation between the nanocrystalline film structure and magnetic characteristics at the transition from disordered to regular structure is studied.
The periodic crystal lattice not necessarily grows in film structures, i.e., the length and arrangement of the short-range interatomic bonds not always coincide with those of the bonds in the regular structure.
Pearson, The Crystal Chemistry and Physics of Metals and Alloys, University of Waterloo, Wiley-Interscience, 1972
Online since: January 2022
Authors: M.P. Sharma, Dinesh Uthra
Introduction
Ceria (CeO2) NPs (Nano Particles) are the oxide, used in the areas of Catalysis, Electro chemistry, Photo-chemistry, and Materials science, Biomedical, Luminescent, fuel cell, gas sensors, water splitting, solar cell etc.[1-18] extremely prompt ultraviolet (UV) absorbent, an oxidation agent and electrochemical devices counter electrode and LPG sensor [19-25].
Hermansson ,Atomic and electronic structure of unreduced and reduced CeO2 surfaces: a first-principles study, J.Chem.
Gopal Mishra , Structural, redox and catalytic chemistry of ceria based materials, Bul.
Korableva, EPR study of fluorite containing different concentration of ceria, Materials Chemistry and Physics, 240 (2020) 122136 1-4
Sugiura, X-ray absorption fine structure analysis of local structure of CeO2–ZrO2 mixed oxides with the same composition ratio (Ce/Zr= 1), Catal.
Hermansson ,Atomic and electronic structure of unreduced and reduced CeO2 surfaces: a first-principles study, J.Chem.
Gopal Mishra , Structural, redox and catalytic chemistry of ceria based materials, Bul.
Korableva, EPR study of fluorite containing different concentration of ceria, Materials Chemistry and Physics, 240 (2020) 122136 1-4
Sugiura, X-ray absorption fine structure analysis of local structure of CeO2–ZrO2 mixed oxides with the same composition ratio (Ce/Zr= 1), Catal.
Online since: May 2020
Authors: Qiong Wu, Jian Chang Xiao, Jun Li, Jin Rong Sun, Yan Xu, Fang Jiang, Yuan Lei, Tian Yu Li, Xin Di Xu, Mei Fen Huang
Synthesis, Single Crystal X-Ray Structure, Hirshfeld Surface Analysis of a New Isopolymolybdate Based Supramolecular Hybrid
Jianchang Xiao1,a, Jun Li2,b, Jinrong Sun1,c, Yan Xu1,d, Fang Jiang1,e,
Yuan Lei1,f, Tianyu Li1,g, Xindi Xu1,h, Meifen Huang1,i and Qiong Wu1,3,j*
1Department of Chemistry and Chemical Engineering, Kunming University, Yunnan Province, 650214, China
2Medical School of Kunming University, Yunnan, Kunming, 65200, P.R.
Crystal Structure Determination.
Results and Discussion Crystal Structure.
Figure 2: Ball-and-stick illustration of the supermolecular structure of 1.
This result is in accordance with the single-crystal structure analysis.
Crystal Structure Determination.
Results and Discussion Crystal Structure.
Figure 2: Ball-and-stick illustration of the supermolecular structure of 1.
This result is in accordance with the single-crystal structure analysis.
Online since: October 2008
Authors: Lisa C. Klein
Although the exact structure is not known, Nafion® is modeled typically by a three-zone pore
model.
Also, silsesquioxanes, which are cage-like structures with the formula RSiO3/2, have been prepared.
Mauritz: Chemistry of Materials Vol. 9 (1997) p. 36 [17] W.
Moore: Chemistry of Materials Vol. 7 (1995) p. 192 [19] P.
Lu: Chemistry of Materials Vol. 19 (2007) p. 2372 [43] Y.
Also, silsesquioxanes, which are cage-like structures with the formula RSiO3/2, have been prepared.
Mauritz: Chemistry of Materials Vol. 9 (1997) p. 36 [17] W.
Moore: Chemistry of Materials Vol. 7 (1995) p. 192 [19] P.
Lu: Chemistry of Materials Vol. 19 (2007) p. 2372 [43] Y.
Online since: January 2013
Authors: Le Le Zhao, Shuo Wang, Zu Guang Liu, Fu Hou Lei, Hua Long Zhu
Synthesis of Substituted Phosphotungstic Acids and Their Catalytic Performance on Cationic Polymerization of β-Pinene
Zuguang Liu 1,2, a, Hualong Zhu1,2 , Shuo Wang 1,2 ,b , Lele Zhao 1,2,c,
and Fuhou Lei 1,2
1 College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, 530008 Nanning, China
2 Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, 530008 Nanning, China
aliuzug@163.com, bwangsure520@126.com , czhaolele0506@163.com
Keywords: Substituted phosphotungstic acids; Cationic polymerization; β-Pinene
Abstract.
The experimental results show that the substituted phosphotungstic acids are mono-substituted and keep Keggin structure.
These peaks indicate that four substituted phosphotungstic acids still keep Keggin structure.
Therefore, the substituted heteropoly anions still keep Keggin-type structure.
The experimental results reveal that the heteropolyacids synthesized are mono-substituted and keep Keggin structure.
The experimental results show that the substituted phosphotungstic acids are mono-substituted and keep Keggin structure.
These peaks indicate that four substituted phosphotungstic acids still keep Keggin structure.
Therefore, the substituted heteropoly anions still keep Keggin-type structure.
The experimental results reveal that the heteropolyacids synthesized are mono-substituted and keep Keggin structure.
Online since: September 2013
Authors: Yu Bin Ji, Miao Yu, Jian Li, Qiang Chen
Research Progress on the Anti-leukemia Effect of Lycorine
Miao Yu1, 2, 3, a, Jian Li1, 2, Qiang chen1, 2, Yu-bin Ji1, 2, 3, b
1Research Center on Life Sciences and Environmental Sciences, Harbin University of
Commerce, Harbin, 150076, China
2Engineering Research Center of Natural Anticancer Drugs, Ministry of
Education, Harbin, 150076, China
3Postdoctoral Programme, Institute of Material Medica of Harbin University of
Commerce, Harbin, 150076, China
ayumiao913@163.com, bjyb@hrbcu.edu.cn
Keywords: Lycorine;Leukemia;Structure-activity
Abstract.
The inhibition effects of lycorine on the cell proliferation of leukemia HL-60 cells, K562 cells, chronic lymphocytic leukemia, U937 cells and structure-activity studies on the lycorine pharmacophore in leukemia cells were summarized in the article.
The review of pharmacological effects and structure-activity on leukemia of lycorine can provide a reference for the further development and utilization on the kind of natural products.
Structure-activity Studies on the Lycorine Pharmacophore in Leukemia Cells In the present study, apoptosis initiation was retained upon replacement of the 8, 9-methylenedioxy group in lycorine by 8-methoxy-9-hydroxy substituents in pseudolycorine.
Nair, L Rárová, M Strnad: Bioorganic & Medicinal Chemistry Letters.
The inhibition effects of lycorine on the cell proliferation of leukemia HL-60 cells, K562 cells, chronic lymphocytic leukemia, U937 cells and structure-activity studies on the lycorine pharmacophore in leukemia cells were summarized in the article.
The review of pharmacological effects and structure-activity on leukemia of lycorine can provide a reference for the further development and utilization on the kind of natural products.
Structure-activity Studies on the Lycorine Pharmacophore in Leukemia Cells In the present study, apoptosis initiation was retained upon replacement of the 8, 9-methylenedioxy group in lycorine by 8-methoxy-9-hydroxy substituents in pseudolycorine.
Nair, L Rárová, M Strnad: Bioorganic & Medicinal Chemistry Letters.
Online since: September 2023
Authors: Abdelkader El Kissani, Abdelfattah Narjis, Abdelkader Outzourhit, Lahcen Nkhaili, Said Elmassi, Lahocine Amiri, Abdelaziz Tchenka, Mohammed Bousseta, Kassem El Assali
The refractive index of WO3 is related to its crystal structure.
At high temperatures, oxygen can be released from the crystal structure of tungsten oxide, a process known as reduction.
Ponpandian, « Tungsten oxidegraphene oxide (WO3-GO) nanocomposite as an efficient photocatalyst, antibacterial and anticancer agent », Journal of Physics and Chemistry of Solids, vol. 116, p. 137 147
Khalaf, “Results in Chemistry Kinetic and thermodynamic study of ALP enzyme in the presence and absence MWCNTs and Pt-NPs nanocomposites,” Results Chem., vol. 5, no.
[33] B Pecquenard; H Lecacheux; J Livage; C Julien, « Orthorhombic WO3Formed via a Ti-Stabilized WO3•13H2O Phase », Journal of Solid State Chemistry, 135(1), 159–168, 1998
At high temperatures, oxygen can be released from the crystal structure of tungsten oxide, a process known as reduction.
Ponpandian, « Tungsten oxidegraphene oxide (WO3-GO) nanocomposite as an efficient photocatalyst, antibacterial and anticancer agent », Journal of Physics and Chemistry of Solids, vol. 116, p. 137 147
Khalaf, “Results in Chemistry Kinetic and thermodynamic study of ALP enzyme in the presence and absence MWCNTs and Pt-NPs nanocomposites,” Results Chem., vol. 5, no.
[33] B Pecquenard; H Lecacheux; J Livage; C Julien, « Orthorhombic WO3Formed via a Ti-Stabilized WO3•13H2O Phase », Journal of Solid State Chemistry, 135(1), 159–168, 1998
Online since: September 2011
Authors: Qin Zhang, San Feng Fang, Chang Zhen Wang, Yuan Shan Han
Results and discussion
2.1 The main device used in the experiments
78-1 Magnetic heating stirrer; PHS-25 PH meter; MD100-1 Electronic Balance; HG101-1A Electric Blast Oven; LD4-2 centrifuge (0-4000rmin-1) as the experimental device. 4B76120B LG microwave oven as a heating device, respectively Rigaku D/max-3A powder diffraction and the crystal structure and morphology of the particle size analysis by Shimadzu SSX-550 scanning electron microscope
2.2 Experimental results
The LaF3 powder SEM photographs and XRD as shown in Figure 1-4 by methods of precipitation, sol-gel, microwave.
Reference [1] Kuwata S,Miura N,Yamazoe N.Response of solid-state potentiometric sensor using LaF3 to a small amount of H2 or CO in air at lower temperature[J].Chemistry Letter,1984,30(15):1295-1297
Journal of Physical Chemistry,1993,9(6):815~818
Reference [1] Kuwata S,Miura N,Yamazoe N.Response of solid-state potentiometric sensor using LaF3 to a small amount of H2 or CO in air at lower temperature[J].Chemistry Letter,1984,30(15):1295-1297
Journal of Physical Chemistry,1993,9(6):815~818
Online since: September 2012
Authors: Fan Zhang, Xiang Zhang
The wood structure results in good combustion conditions, the temperature rises up quickly because of the indoor poor heat dissipation when fire happens, which easily lead to flashover.
Chemistry of wood and cellulose,vol.
Chemistry of wood and cellulose, vol.
Chemistry of wood and cellulose,vol.
Chemistry of wood and cellulose, vol.