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Online since: December 2011
Authors: Xian Jin Yu, Li Peng Zhang, Zeng Dian Zhao, Yun Hui Dong, Tao Dong
Results and Discussion
Crystal Structure Characterization.
More clearly splitting, the better layered 2D structure generated.
It is indicated that phase transformation of crystal structures is not obvious.
Huang: Progress in chemistry Vol. 19 (2007), p. 1313 [2] S.
Ma: J Fluorine Chemistry Vol. 128 (2007), p. 141 [10] N.
More clearly splitting, the better layered 2D structure generated.
It is indicated that phase transformation of crystal structures is not obvious.
Huang: Progress in chemistry Vol. 19 (2007), p. 1313 [2] S.
Ma: J Fluorine Chemistry Vol. 128 (2007), p. 141 [10] N.
Online since: November 2016
Authors: Priscilla Gloria Lorraine Baker, Francis Ntumba Muya, Emmanuel Iheanyichukwu Iwuoha, Xolani Terrance Ngema
Hydrogels are three dimensional networks of crosslinked polymers which are able to swell rapidly and retain large volumes of water in their swollen structure.
It can be used to rapidly characterize the chemical composition and structure of a sample, whether solid, liquid, gas, gel, slurry or powder.
Analytical and Bioanalytical Chemistry, 2010. 398(7-8): p. 3193-3201
Green Chemistry, 2014. 16(6): p. 3247
Central European Journal of Chemistry, 2012. 10(4): p. 1349
It can be used to rapidly characterize the chemical composition and structure of a sample, whether solid, liquid, gas, gel, slurry or powder.
Analytical and Bioanalytical Chemistry, 2010. 398(7-8): p. 3193-3201
Green Chemistry, 2014. 16(6): p. 3247
Central European Journal of Chemistry, 2012. 10(4): p. 1349
Online since: January 2020
Authors: Sarah M. Taleb, Salah Aldeen Adnan, Makram A. Fakhri
The nanocrystalline structure of Lithium niobate (LiNbO3) was prepared and deposited onto substrate made of quartz by utilize pulse laser deposition technique.
Aronne, Sol–gel synthesis of nanocomposite materials based on lithium niobate nanocrystals dispersed in a silica glass matrixJournal of Solid State Chemistry, 182 (2009) 1229–1234
Xu, Optical homogeneity and second harmonic generation in Li-rich Mg-doped LiNbO3 crystalsMaterials Chemistry and Physics 88 (2004) 97-101
Huang, A plasmonic electro-optical variable optical attenuator based on side-coupled metal–dielectric–metal structure Optics mmunications, 294 (2013) 405–408
Belmonte, and V.Pruneri, Micro structured integrated electro optic LiNbO3 modulators Laser & Photon.
Aronne, Sol–gel synthesis of nanocomposite materials based on lithium niobate nanocrystals dispersed in a silica glass matrixJournal of Solid State Chemistry, 182 (2009) 1229–1234
Xu, Optical homogeneity and second harmonic generation in Li-rich Mg-doped LiNbO3 crystalsMaterials Chemistry and Physics 88 (2004) 97-101
Huang, A plasmonic electro-optical variable optical attenuator based on side-coupled metal–dielectric–metal structure Optics mmunications, 294 (2013) 405–408
Belmonte, and V.Pruneri, Micro structured integrated electro optic LiNbO3 modulators Laser & Photon.
Online since: January 2004
Authors: Toshiyuki Ohdaira, Ryoichi Suzuki, Ying Li, R. Zhang, Yan Ching Jean, M.M. Feldstein, J. Zhang, H. Chen
Jean
1
1
Department of Chemistry, University of Missouri - Kansas City, Kansas City, MO 64110 USA
2
National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.
3
A.V.
The PVP-PEGMMA comb-like polymer (one H-bond, one covalent bond) has a structure intermediate between the H-bonded PVPPEG stoichiometric couple (two H-bonds) and the network structured PVP-PEGDA copolymer (two covalent bonds).
S parameter data could be fitted into a model of layered structure in using VEPFIT program [9] as plotted curves in Fig. 1.
The polymer PVP-PEG mixture with two sides hydrogen bonding has a larger free volume than the comb structured PVP-PEGMA (one H bond) and the network structured PVPPEGDA (no H bonding) for drug transport.
Wu, in: Principles and Applications of Positron and Positronium Chemistry, Y.C.
The PVP-PEGMMA comb-like polymer (one H-bond, one covalent bond) has a structure intermediate between the H-bonded PVPPEG stoichiometric couple (two H-bonds) and the network structured PVP-PEGDA copolymer (two covalent bonds).
S parameter data could be fitted into a model of layered structure in using VEPFIT program [9] as plotted curves in Fig. 1.
The polymer PVP-PEG mixture with two sides hydrogen bonding has a larger free volume than the comb structured PVP-PEGMA (one H bond) and the network structured PVPPEGDA (no H bonding) for drug transport.
Wu, in: Principles and Applications of Positron and Positronium Chemistry, Y.C.
Online since: November 2013
Authors: Hong Xia Yan, Yuan Jia, Yi Chen Feng, Ting Ting Li
Synthesis of Silsesquioxane-contained Benzoxazine and the Thermal Properties of Its High Performance Polymer
Hongxia Yan a, Yuan Jia b, Yichen Feng c, Tingting Li d
Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi’An, Shaanxi, 710129, P.R.
Fourier transform infrared spectroscopy (FTIR) was employed to characterize the structure of the new BOZ resin contained POSS (POSS-BOZ).
As a result, the properties of BOZ resin may further be improved by tightening their network structure [6].
As the BOZ monomer is often prepared from very economical raw materials, such as phenol, formaldehyde, and primary amine [12], and its structure can also be designed by using appropriate starting materials due to its rich chemistry process [13].
On heating process, the POSS-BOZ resin undergoing the similar process as bA-BOZ, the ring gets opened by the cleavage of C-O bond; there by the POSS-BOZ molecule is transformed from a ring structure to a linear open chain structure.
Fourier transform infrared spectroscopy (FTIR) was employed to characterize the structure of the new BOZ resin contained POSS (POSS-BOZ).
As a result, the properties of BOZ resin may further be improved by tightening their network structure [6].
As the BOZ monomer is often prepared from very economical raw materials, such as phenol, formaldehyde, and primary amine [12], and its structure can also be designed by using appropriate starting materials due to its rich chemistry process [13].
On heating process, the POSS-BOZ resin undergoing the similar process as bA-BOZ, the ring gets opened by the cleavage of C-O bond; there by the POSS-BOZ molecule is transformed from a ring structure to a linear open chain structure.
Online since: May 2025
Themes include polymer chemistry, the role of nanofillers, fiber-reinforced composites, and advancements in bio-based and biodegradable materials.
Emphasis is placed on how structure-property relationships influence mechanical strength, thermal stability, and environmental resistance.
Emphasis is placed on how structure-property relationships influence mechanical strength, thermal stability, and environmental resistance.
Online since: December 2010
Authors: Qing Yang, Xin Qiu
Quantitative Structure-Activity Relationship between Compound
Molecular Characteristics and Nanofiltration Separation Efficiency
Qing Yang a, Xin Qiub
School of Engineering, Zhejiang Normal University, 688 Yingbin Road, Jinhua, China 321004
a yangq@zjnu.cn, b xqiu@zjnu.cn
Keywords: Organic molecular characteristics; Nanofiltration membrane separation; Square regression; Quantitative structure-activity relationship
Abstract.
The aim of this study is to establish a certain Quantitative Structure-Activity Relationship (QSAR) between compound molecular characteristics and nanofiltration (NF) separation efficiency.
Quantitative Structure-Activity Relationship (QSAR) is a kind research method between compound molar to according to the molar physical and chemical properties or structural parameter by mathematical statistics and regression analysis certain correlation effect [2].
QSAR was mainly applied on the reasonable design of pharmaceutical, pesticides, chemistry poison, or so on [3], and also on the field of environment science in recent years [4].
Molar Refraction (CMR) denotes stereo structure and electric characteristics, the more CMR, the more electronic polarizability.
The aim of this study is to establish a certain Quantitative Structure-Activity Relationship (QSAR) between compound molecular characteristics and nanofiltration (NF) separation efficiency.
Quantitative Structure-Activity Relationship (QSAR) is a kind research method between compound molar to according to the molar physical and chemical properties or structural parameter by mathematical statistics and regression analysis certain correlation effect [2].
QSAR was mainly applied on the reasonable design of pharmaceutical, pesticides, chemistry poison, or so on [3], and also on the field of environment science in recent years [4].
Molar Refraction (CMR) denotes stereo structure and electric characteristics, the more CMR, the more electronic polarizability.
Online since: November 2020
Authors: Igor M. Imshinetsky, Dmitry V. Mashtalyar, Sergey V. Gnedenkov, Sergey L. Sinebryukhov, Sergey N. Suchkov, Mariia S. Gerasimenko, Konstantine V. Nadaraia, Alexander N. Minaev
The influence of current densities formation on the structure, corrosion properties of PEO-coatings was studied.
Dependence of the coating structure on the formation current density.
Electrochemical studies have been carried out within the framework of the State Order of the Institute of Chemistry FEB RAS, project no. 265-2019-0001.
Kainer, Study of the structure and corrosion behavior of PEO coatings on AM50 magnesium alloy by electrochemical impedance spectroscopy, Surf.
Functional Plasma Electrolytic Oxidation Coatings for Offshore Structures.
Dependence of the coating structure on the formation current density.
Electrochemical studies have been carried out within the framework of the State Order of the Institute of Chemistry FEB RAS, project no. 265-2019-0001.
Kainer, Study of the structure and corrosion behavior of PEO coatings on AM50 magnesium alloy by electrochemical impedance spectroscopy, Surf.
Functional Plasma Electrolytic Oxidation Coatings for Offshore Structures.
Online since: February 2014
Authors: Ying Zhu, Jie Wu, Hong Bin Chen
Using the CIS(Configuration Interaction with Single Substitute) method, we calculate the excited state structure and vibrational frequencies of cycloheptanone ion.
In the B3LYP/6-31 + G (d, p) level, all possible fragments generated by the GaussView3.07 the initial structure and internal coordinates, the structure of C5H8O+ fragments optimization and frequency calculation.
The results in Table 3: Table 3: C5H8O+ fragments of structure optimization, frequency and energy calculation The way of debris The stable structure of energy (a.u.)
Frequency analysis Stable configuration optimization 2P1 1C-2C, 4C-3C break Eenergy:E=-270.2375 Frequency: no imaginary frequency 2P2 2C-3C;4C-5C break Eenergy:E=-270.2601 Frequency: no imaginary frequency 2P3 4C-3C, 6C-5C break Eenergy:E=-270.2600 Frequency: no imaginary frequency Comparison can be seen from the table, the path formed by the debris 2P2 lowest energy structure, so C5H8O+ fragmentation path to a stable structure as shown in the ring structure 2P2.
The basic principles of quantum chemistry and ab initio calculation [M].Beijing: Science press, 1985 [3] Lubman D M, Naaman R, Zare R N.
In the B3LYP/6-31 + G (d, p) level, all possible fragments generated by the GaussView3.07 the initial structure and internal coordinates, the structure of C5H8O+ fragments optimization and frequency calculation.
The results in Table 3: Table 3: C5H8O+ fragments of structure optimization, frequency and energy calculation The way of debris The stable structure of energy (a.u.)
Frequency analysis Stable configuration optimization 2P1 1C-2C, 4C-3C break Eenergy:E=-270.2375 Frequency: no imaginary frequency 2P2 2C-3C;4C-5C break Eenergy:E=-270.2601 Frequency: no imaginary frequency 2P3 4C-3C, 6C-5C break Eenergy:E=-270.2600 Frequency: no imaginary frequency Comparison can be seen from the table, the path formed by the debris 2P2 lowest energy structure, so C5H8O+ fragmentation path to a stable structure as shown in the ring structure 2P2.
The basic principles of quantum chemistry and ab initio calculation [M].Beijing: Science press, 1985 [3] Lubman D M, Naaman R, Zare R N.
Online since: November 2011
Authors: Shao Yun Wang, Jun Zhao, Zhi Bin Xu, Jin Hong Wu
Preparation, partial isolation of antifreeze peptides from fish gelatin with hypothermia protection activity
Shaoyun Wang1,a* Jun Zhao1,b, Zhibin Xu2,c, Jinhong Wu3,d*
1College of Biological science and Engineering, Fuzhou University, No.2 Xueyuan Road,
Minhou District, Fuzhou 350108, China
2Institute of Biomedical Sciences, Fudan University, Shanghai 200032, China
3Department of Food Science and Technology, Bor Luh Food Safety Center, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Minhang District, Shanghai 200240, China
ashywang@fzu.edu.cn, bzhaojun_zhj@126.com, c zhibinx@gmail.com,
dwujinhong@sjtu.edu.cn (*corresponding author)
Keywords: antifreeze peptides, preparation, isolation, hypothermia protection
Abstract: Antifreeze proteins have characteristics of inhibiting the growth of crystals, decreasing the injury of cells and can retain the structure, texture and quality of productions.
Damodaran, Ice-structuring peptides derived from bovine collagen, J.
Damodaran, Optimisation of hydrolysis conditions and fractionation of peptide cryoprotectants from gelatin hydrolysate, Food Chemistry. 115 (2009) 620-630
Damodaran, Inhibition of ice crystal growth in ice cream mix by gelatin hydrolysate, Journal of Agricultural and Food Chemistry. 55 (2007) 10918- 10923
Damodaran, Ice-structuring peptides derived from bovine collagen, J.
Damodaran, Optimisation of hydrolysis conditions and fractionation of peptide cryoprotectants from gelatin hydrolysate, Food Chemistry. 115 (2009) 620-630
Damodaran, Inhibition of ice crystal growth in ice cream mix by gelatin hydrolysate, Journal of Agricultural and Food Chemistry. 55 (2007) 10918- 10923