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Online since: October 2014
Authors: Yun Biao Sun, Yi Min Wu, Yan Xu
China
2 School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P.
We report here the synthesis, and structure of a new cluster coordination polymer, namely compound 1, which contains twin-nest-shaped structure.
The structure was solved by direct methods and refined by full matrix least-squares techniques based on F2.
Results and discussion Crystal structure.
The structure of complex 1 is shown in Fig.1.
We report here the synthesis, and structure of a new cluster coordination polymer, namely compound 1, which contains twin-nest-shaped structure.
The structure was solved by direct methods and refined by full matrix least-squares techniques based on F2.
Results and discussion Crystal structure.
The structure of complex 1 is shown in Fig.1.
Online since: August 2022
Authors: Xiao Bao Zuo, Dong Cui, Jing Wang
The structure of anthocyanins in the steady state in showed in Fig. 2.
Embedded micro-sensor for monitoring pH in concrete structures: Smart Structures, 3988. (2000): 40-44
Journal of materials chemistry.
Food Chemistry, 218 (2017) : 122-128
Food Chemistry, 359 (2021)
Embedded micro-sensor for monitoring pH in concrete structures: Smart Structures, 3988. (2000): 40-44
Journal of materials chemistry.
Food Chemistry, 218 (2017) : 122-128
Food Chemistry, 359 (2021)
Online since: April 2011
Authors: Gou Sheng Liu, Xian Zhi Duan
Thus, it is certain that the synthesized sample has similar crystalline structure with commercial JLS APP-II and standard APP-II in Shen.
3.2 Synthesis of APP-V
The XRD patterns of synthesized APP-V are shown in Fig. 2.
Thus, it is certain that the synthesized sample has similar crystalline structure with standard APP-V in Shen [5] and Watanabe [9]. 3.3 Transformation from APP-II to APP-V It is interesting to find that APP-II can transform to APP-V by controlled ammonia atmosphere and designed temperature rising procedure.
Table 3 The five strongest intensity peaks of synthesized APP-II-V and APP-V in literature APP-II-V APP-V in Watanabe d/Å 2θ/º I/% d/Å I/% 6.82 12.96 46.2 6.86 54 5.59 15.83 100 5.61 100 3.67 24.22 33.2 3.67 60 3.41 26.08 55.0 3.43 75 2.81 31.84 20.3 2.80 15 Table 3 shows that corresponding 2θ data of APP-II-V are similar with those of APP-V in Watanabe, meaning temporary APP-II-V is somewhat like crystalline structure of APP-V in Watanabe, the crystalline transformation from APP-II to APP-V was thus carried out.
Journal of Agriculture and Food Chemistry, Vol. 24,(1976), p.412
Industrial & Engineering Chemistry Research.
Thus, it is certain that the synthesized sample has similar crystalline structure with standard APP-V in Shen [5] and Watanabe [9]. 3.3 Transformation from APP-II to APP-V It is interesting to find that APP-II can transform to APP-V by controlled ammonia atmosphere and designed temperature rising procedure.
Table 3 The five strongest intensity peaks of synthesized APP-II-V and APP-V in literature APP-II-V APP-V in Watanabe d/Å 2θ/º I/% d/Å I/% 6.82 12.96 46.2 6.86 54 5.59 15.83 100 5.61 100 3.67 24.22 33.2 3.67 60 3.41 26.08 55.0 3.43 75 2.81 31.84 20.3 2.80 15 Table 3 shows that corresponding 2θ data of APP-II-V are similar with those of APP-V in Watanabe, meaning temporary APP-II-V is somewhat like crystalline structure of APP-V in Watanabe, the crystalline transformation from APP-II to APP-V was thus carried out.
Journal of Agriculture and Food Chemistry, Vol. 24,(1976), p.412
Industrial & Engineering Chemistry Research.
Online since: November 2013
Authors: Jin He Jiang, Wei Yu Dai
The Synthesis and Ion-exchange Property of Li0.5Mn1.375O3
Jinhe Jiang Weiyu Dai
MicroScale Science Institute , Department of Chemistry and Chemical Engineering ,Weifang University, Weifang, 261061,China
Corresponding author.
In this paper, the discussion is about the synthesis, structure and ion exchange of the Li-Mn composite oxide inorganic ion exchanger of Li0.5Mn1.375O3.
The structure of compound metal oxide Li0.5Mn1.375O3 crystallized at 700˚C was much perfect.
Chemistry Online. 1997,(12),11-16 [3] Y.F.Liu, Kenta Ooi: Inoranic ion exchanger with ion-memery ability[J].
LiMn2O4 doped elements on the structure and properties [J].
In this paper, the discussion is about the synthesis, structure and ion exchange of the Li-Mn composite oxide inorganic ion exchanger of Li0.5Mn1.375O3.
The structure of compound metal oxide Li0.5Mn1.375O3 crystallized at 700˚C was much perfect.
Chemistry Online. 1997,(12),11-16 [3] Y.F.Liu, Kenta Ooi: Inoranic ion exchanger with ion-memery ability[J].
LiMn2O4 doped elements on the structure and properties [J].
Online since: November 2012
Authors: Jing Wang, Jin Feng Gao, Hong Xia Gao, Zhen Yu Tan
Adaptive control of hyper-chaotic systems based on dynamic structure RBF neural networks
Wang Jing1,a, Gao Hong-Xia1,b, Tan Zhen-Yu 1,c , Gao Jin-Feng 2,d
1 School of Electrical Engineering, Shandong University, Jinan 250061, China
2 School of Electrical Engineering, Zhengzhou University, Zhengzhou 450002, China
awjnotice@gmail.com, b gaohongxia@sdu.edu.cn, c tzy@sdu.edu.cn, d jfgao@zzu.edu.cn
Keywords: hyper-chaotic systems; adaptive control; dynamic structure RBF neural networks
Abstract.
The fundamental problem is to achieve a network with a parsimonious structure.
Fabri et al. proposed a dynamic structure RBFNN in 1996[4].
Obviously, G(x) is an unknown function which can be approximated by a dynamic structure RBFNN.The activation function of RBFNN hidden nodes is selected as Gaussian function.The dynamic structure RBFNN needed will be built after the following steps: Step 1: Partition the input space using symmetric triangle fuzzy sets with membership functions of the form [7].
Tsekouras et al: Industrial and Engineering Chemistry Research.
The fundamental problem is to achieve a network with a parsimonious structure.
Fabri et al. proposed a dynamic structure RBFNN in 1996[4].
Obviously, G(x) is an unknown function which can be approximated by a dynamic structure RBFNN.The activation function of RBFNN hidden nodes is selected as Gaussian function.The dynamic structure RBFNN needed will be built after the following steps: Step 1: Partition the input space using symmetric triangle fuzzy sets with membership functions of the form [7].
Tsekouras et al: Industrial and Engineering Chemistry Research.
Online since: September 2013
Authors: Fu Qiang Xu, You Tian Tao
The network’s structure is similar to the multilayer feed forward network, only has a hidden layer of three layer forward network.
The Figure. 1 is structure of RBF neural network.
Nankai university: Analytical Chemistry, 2010
[3] Chu Xiaoli, Yuan Hongfu, Wang Yanbin and Lu Wanzhen.Variable Selection for Partial Least Squares Modeling by Genetic Algorithms.Chinese Journal of Analytieal Chemistry, 2001,29(4).pp.437-442
[6] Lin Yan.The PLS Variable Selection Method and Its Application.Xiamen university: Analytical Chemistry, 2007
The Figure. 1 is structure of RBF neural network.
Nankai university: Analytical Chemistry, 2010
[3] Chu Xiaoli, Yuan Hongfu, Wang Yanbin and Lu Wanzhen.Variable Selection for Partial Least Squares Modeling by Genetic Algorithms.Chinese Journal of Analytieal Chemistry, 2001,29(4).pp.437-442
[6] Lin Yan.The PLS Variable Selection Method and Its Application.Xiamen university: Analytical Chemistry, 2007
Online since: February 2014
Authors: Xiao Peng Chen, Jie Zhen Liang, Lin Lin Wang, Zhang Fa Tong, Rui Wu, Qing Ruo Xie, Yan Hua Jia, Wei Jian Nong, Ke Xian Li, Kelin Huang
The chemical structure of abietic acid is shown in Figure 1.
Due to its special structure, abietic acid is by far the most actively studied rosin acid.
Fig. 1 The chemical structure of abietic acid Materials and methods Materials.
Larsen, et al., Potential ambergris odorants from abietic acid, Australian Journal of Chemistry. 43(1990)21-46
Agudelo, et al., Synthesis and biological evaluation of abietic acid derivatives, European Journal of Medicinal Chemistry. 44(2009)2468-2472
Due to its special structure, abietic acid is by far the most actively studied rosin acid.
Fig. 1 The chemical structure of abietic acid Materials and methods Materials.
Larsen, et al., Potential ambergris odorants from abietic acid, Australian Journal of Chemistry. 43(1990)21-46
Agudelo, et al., Synthesis and biological evaluation of abietic acid derivatives, European Journal of Medicinal Chemistry. 44(2009)2468-2472
Online since: August 2013
Authors: Nicola Tirelli
These materials are hereafter referred to as polysulfides and the reader can find a comprehensive descriptions of different polysulfide structures and their synthetic methods in a recent review[12].
We concentrate on systems that are capable of a prolonged circulation in body fluids; this requirement determines constraints in the dimension and chemistry of the materials.
The contemporaneous presence of PEG and PPS and a nano dimensions can be achieved by using PPS-PEG block copolymers; they are amphiphilic (PPS is hydrophobic, PEG is hydrophilic) and in water self-assemble in a variety of structures comprising vesicles[13] and micelles[14].
Due to the increase in local polarity, any polysulfide-based material becomes more hydrophilic; as a result, soluble in water (micelles, vesicles) or swelling (nanoparticles), depending on whether its structure was based on hydrophobic association or covalent cross-linking.
Bioconjugate Chemistry 23 (2012) 438-449
We concentrate on systems that are capable of a prolonged circulation in body fluids; this requirement determines constraints in the dimension and chemistry of the materials.
The contemporaneous presence of PEG and PPS and a nano dimensions can be achieved by using PPS-PEG block copolymers; they are amphiphilic (PPS is hydrophobic, PEG is hydrophilic) and in water self-assemble in a variety of structures comprising vesicles[13] and micelles[14].
Due to the increase in local polarity, any polysulfide-based material becomes more hydrophilic; as a result, soluble in water (micelles, vesicles) or swelling (nanoparticles), depending on whether its structure was based on hydrophobic association or covalent cross-linking.
Bioconjugate Chemistry 23 (2012) 438-449
Online since: March 2025
Authors: Muhammad Nidzhom Zainol Abidin, Ahmad Faruq Johari, Siti Fatahiyah Mohamad, Sumarni Mansur, Sharifah Mohamad
Another possible reason was the change in molecular structure of the PI membrane.
The higher radiation dose might destroy the membrane structure at the molecular level, making it difficult for the monomer to attach to the active sites [11].
This is due to the PI structure, which consists of aromatic and imide groups that offer a poor affinity for water.
Yasin, “Radiation induced graft polymerization of glycidyl methacrylate onto sepiolite,” Radiation Physics and Chemistry, vol. 179, no.
Royal Society of Chemistry, pp. 5468–5516, May 07, 2021. doi: 10.1039/d0cs01347a
The higher radiation dose might destroy the membrane structure at the molecular level, making it difficult for the monomer to attach to the active sites [11].
This is due to the PI structure, which consists of aromatic and imide groups that offer a poor affinity for water.
Yasin, “Radiation induced graft polymerization of glycidyl methacrylate onto sepiolite,” Radiation Physics and Chemistry, vol. 179, no.
Royal Society of Chemistry, pp. 5468–5516, May 07, 2021. doi: 10.1039/d0cs01347a
Online since: May 2021
Authors: Siti Hasnawati Jamal, Noor Azilah Mohd Kasim, Victor Feizal Knight Victor Ernest, Mohd Nor Faiz Norrrahim, Noor Aisyah Ahmad Shah, Wan MD Zin Wan Yunus
Nanocellulose has shown a great potential for high-performance filtration material due to its interesting characteristics such as high adsorption capacity, large surface area, high strength, renewable, chemical inertness, and versatile surface chemistry.
Nanocellulose is a renewable material which combines a high surface area, high strength, renewable, hydrophilic and versatile surface chemistry [6].
This is due to the hydrogen atom from cellulose backboned is more attractive to perform hydrogen bond with more electronegative atom in malathion structure.
The sulphur element can only be found in the chemical structure of malathion.
Chen, The content of different hydrogen bond models and crystal structure of eucalyptus fibers during beating, Bioresources. 8 (2013) 717-734.
Nanocellulose is a renewable material which combines a high surface area, high strength, renewable, hydrophilic and versatile surface chemistry [6].
This is due to the hydrogen atom from cellulose backboned is more attractive to perform hydrogen bond with more electronegative atom in malathion structure.
The sulphur element can only be found in the chemical structure of malathion.
Chen, The content of different hydrogen bond models and crystal structure of eucalyptus fibers during beating, Bioresources. 8 (2013) 717-734.