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Online since: December 2021
Authors: Andrey N. Dmitriev, Galina Yu. Vitkina, Roman V. Alektorov, Elena A. Vyaznikova, Alexey B. Shubin
The Role of Basicity in the Formation of the Structure and Properties of Iron Ore Agglomerates
A.N.
The SFCA and SFCA-I phases differ in structure and morphology.
The manuscript [7] shows that the columnar structure of SFCA is obtained at a coke rate of 50-60 kg/t of pig iron and the needle structure at 40 kg/t of pig iron when the basicity of sinter is equal to 1.4-1.8.
Webster, A review of the chemistry, structure and formation conditions of silico-ferrite of calcium and aluminum (‘SFCA’) phases, ISIJ International, 58 (12) (2018), 2157-2172
Montagie, The crystal structure and crystal chemistry of Ca2,3Mg0,8Al1,5Si1,1Fe8,3 O20 (SFCA): solid solution limits and selected phase relationships of SFCA in the SiO2 – Fe2O3 – CaO(– Al2O3) system, Neues Jahrb.Miner.
The SFCA and SFCA-I phases differ in structure and morphology.
The manuscript [7] shows that the columnar structure of SFCA is obtained at a coke rate of 50-60 kg/t of pig iron and the needle structure at 40 kg/t of pig iron when the basicity of sinter is equal to 1.4-1.8.
Webster, A review of the chemistry, structure and formation conditions of silico-ferrite of calcium and aluminum (‘SFCA’) phases, ISIJ International, 58 (12) (2018), 2157-2172
Montagie, The crystal structure and crystal chemistry of Ca2,3Mg0,8Al1,5Si1,1Fe8,3 O20 (SFCA): solid solution limits and selected phase relationships of SFCA in the SiO2 – Fe2O3 – CaO(– Al2O3) system, Neues Jahrb.Miner.
Online since: February 2018
Authors: Christian Rey, Liene Pluduma, K. Gross, Arnolds Ubelis, Astrida Berzina
XRD results (Fig. 1) confirmed that the prepared OHA samples retained the apatite structure.
Krumina from the Institute of Inorganic Chemistry, Riga Technical University for performing part of the XRD measurements.
Structure and chemistry of the apatites and other calcium orthophosphates.
Journal of Molecular Structure 2005;744:653-6
Journal of Solid State Chemistry 1972;5:28-&
Krumina from the Institute of Inorganic Chemistry, Riga Technical University for performing part of the XRD measurements.
Structure and chemistry of the apatites and other calcium orthophosphates.
Journal of Molecular Structure 2005;744:653-6
Journal of Solid State Chemistry 1972;5:28-&
Online since: May 2004
Authors: O. Milošević, Z. Marinković, Lydia Mančić, P. Vulić
The Influence of Mechanical Activation on the Stoichiometry
and Defect Structure of a Sintered ZnO-Cr2O3 System
Z.
These changes are associated with the non-stoichiometry and defect structure.
Also, due to high-accumulated energy in this metastable structure tetrahedral interstitial Zn 2+ is presumed to be favored.
[6] A.R.West, Solid State Chemistry and its Applications, p. 569 John Wiley & Sons, New York (1984)
RistiR, Chemistry for Sustainable Development, 10, 155 (2002)
These changes are associated with the non-stoichiometry and defect structure.
Also, due to high-accumulated energy in this metastable structure tetrahedral interstitial Zn 2+ is presumed to be favored.
[6] A.R.West, Solid State Chemistry and its Applications, p. 569 John Wiley & Sons, New York (1984)
RistiR, Chemistry for Sustainable Development, 10, 155 (2002)
Online since: May 2011
Authors: Qiang Wang, Liang Min Yu, Zhuan Ni Yu
Anti-Biofouling of a Novel Cross-Linked Copolymer Containing a HMBA Side Chain
Qiang Wang1,a, Zhuan ni Yu1,b, Liangmin Yu2,c
1 College of Chemistry and Pharmaceutical, Qingdao Agriculture University, Qingdao, PR China
2 College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, PR China
aoceanwq@yahoo.cn, bfxhx2006@sohu.com, cyuyan@ouc.edu.cn
Key words: acrylic resin; HMBA side chain; antifouling
Abstract: Biofouling on underwater engineered structures, especially on ship hulls, results in increased operational and maintenance costs.
Introduction Engineered structures such as ships, storage tanks, pipelines and marine platforms are under constant attack from marine fouling organisms.
It is reported that 140 million dollars will be consumed to maintain these structures only in bays and ports every year.
The formation of copolymer-1 structure was disclosed as evidenced by IR.
Hydroxyl cross linked with -Si-OCH3 then changed the space configuration structure of the whole polymer into reticular structure which enhanced the coatings hydrophobic and mechanical properties.
Introduction Engineered structures such as ships, storage tanks, pipelines and marine platforms are under constant attack from marine fouling organisms.
It is reported that 140 million dollars will be consumed to maintain these structures only in bays and ports every year.
The formation of copolymer-1 structure was disclosed as evidenced by IR.
Hydroxyl cross linked with -Si-OCH3 then changed the space configuration structure of the whole polymer into reticular structure which enhanced the coatings hydrophobic and mechanical properties.
Online since: May 2013
Authors: Da Zhi Sun, Qian Qian Zheng, Li Jing Pan, Dong Hua Zhang, Yan Xue Tang, Bai Wei Yu
Study of Electrical and Aging Properties on the La-Doped Aurivillius Phase Ferroelectrics BaBi4Ti4O15
Baiwei Yu1,a, Qianqian Zheng1, Lijing Pan1, Donghua Zhang1, Yanxue Tang1 and Dazhi Sun1,b
1Key Laboratory of Resource Chemistry of Ministry of Education, Department of chemistry, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
a yu19871115@163.com, b sundazhi@shnu.edu.cn
Keywords: Aurivillius phase; Bismuth Layer-structured ferroelectrics; BaBi4Ti4O15; dielectric; aging.
Furthermore, the crystal structure and microstructureof BBT ceramic were also discussed.
Crystal structure of the samples was characterized by X-ray diffraction(XRD, Rigaku, Japan).
In this table, we can know that, doping La3+ is helpful to decreasing the c/a value.The distortion of the crystal structure is lower, caused by the the c/a decreased, the structure is more stable.Though tolerance factor plays a very important role in the structure's stablity, the effect of doping is much more important.
From the XRD pattern, Ba(Bi1−xLax)4Ti4O15 is also bismuth layer structured, compared with the pure BBT ceramics.
Furthermore, the crystal structure and microstructureof BBT ceramic were also discussed.
Crystal structure of the samples was characterized by X-ray diffraction(XRD, Rigaku, Japan).
In this table, we can know that, doping La3+ is helpful to decreasing the c/a value.The distortion of the crystal structure is lower, caused by the the c/a decreased, the structure is more stable.Though tolerance factor plays a very important role in the structure's stablity, the effect of doping is much more important.
From the XRD pattern, Ba(Bi1−xLax)4Ti4O15 is also bismuth layer structured, compared with the pure BBT ceramics.
Online since: May 2012
Authors: Xiao Bin Chen, Meng Xiong Tang, He Song Hu
Investigation researches on urban underground structure durability status and it’s invading circumstance
Chen Xiaobin1 Tang Mengxiong2 Hu Hesong2
Guangzhou Institute of Building Science, Guangzhou, 510440, China
Department of Civil Engineering, Central South University, China
Keywords: Urban underground structure; chloride invading; critical chloride threshold; durability of structure; micro structure analysis
Abstract.
According to the environmental invading factors of urban underground structure in Guangzhou, the durability of the structure and the durability status of the typical underground structure was investigated, the environmental factors of underground structure durability damage was summarized, then the strength grade of damage factors was classified.
Combined with the characteristics of urban underground structure erosion environment, the further scientific research devoted to urban underground structure durability report less, it is not much that the prediction model about the life of underground structure durability[7].
It investigated the status and main diseases of underground structure durability, analyzed the main factors of urban underground structure durability damage and divided the influence strength of factors.
The total chloride contents of tunnel structure were also tested by chemical titration.
According to the environmental invading factors of urban underground structure in Guangzhou, the durability of the structure and the durability status of the typical underground structure was investigated, the environmental factors of underground structure durability damage was summarized, then the strength grade of damage factors was classified.
Combined with the characteristics of urban underground structure erosion environment, the further scientific research devoted to urban underground structure durability report less, it is not much that the prediction model about the life of underground structure durability[7].
It investigated the status and main diseases of underground structure durability, analyzed the main factors of urban underground structure durability damage and divided the influence strength of factors.
The total chloride contents of tunnel structure were also tested by chemical titration.
Online since: May 2011
The first is that it provides the quantum-mechanical
foundation of the classical sciences of mechanics, hydrodynamics, thermodynamics, electronics, optics,
metallurgy, and solid-state chemistry.
From combined researches in CMP, optics, and the chemistry of optical fibers a whole new technology, optical communications, is being developed.
Thus, advances in such subareas of CMP as manybody problems, critical phenomena, broken symmetry, and defects have had a major impact on nuclear physics, elementary-particle physics, astrophysics, molecular physics, and chemistry.
The paper by Predeep et al. discusses a basic structure of OLEDs in perspective with HIL material, and presents the effect of annealing on the characteristics of the device at different temperatures.
The electronic band structure and density of states are discussed in light of bonding nature in NbC.
From combined researches in CMP, optics, and the chemistry of optical fibers a whole new technology, optical communications, is being developed.
Thus, advances in such subareas of CMP as manybody problems, critical phenomena, broken symmetry, and defects have had a major impact on nuclear physics, elementary-particle physics, astrophysics, molecular physics, and chemistry.
The paper by Predeep et al. discusses a basic structure of OLEDs in perspective with HIL material, and presents the effect of annealing on the characteristics of the device at different temperatures.
The electronic band structure and density of states are discussed in light of bonding nature in NbC.
Online since: July 2016
Authors: Kevinilo P. Marquez, Rheo B. Lamorena-Lim
Introduction
Correlations between the structure and composition of asphalt to its behavior (i.e. rheology, thermoplasticity) have been studied in many literatures in an attempt to develop models to predict its lifetime and performance as a function of age [1-5].
This can be attributed to the similarities in the structure of each of the components in both asphalt samples.
Analytical Chemistry, 23(6), 894–898. doi:10.1021/ac60054a017 [4] Eilers, H. (1949).
The Colloidal Structure of Asphalt.
Journal of Physical Chemistry, (11), 1195–1211. doi:10.1021/j150473a006 [5] Oyekunle, L.
This can be attributed to the similarities in the structure of each of the components in both asphalt samples.
Analytical Chemistry, 23(6), 894–898. doi:10.1021/ac60054a017 [4] Eilers, H. (1949).
The Colloidal Structure of Asphalt.
Journal of Physical Chemistry, (11), 1195–1211. doi:10.1021/j150473a006 [5] Oyekunle, L.
Online since: August 2021
Authors: Leonid A. Smirnov, Alena G. Upolovnikova, Anatolij A. Babenko
The equilibrium interfacial distribution of sulfur and boron was estimated using the HSC 6.1 Chemistry software package (Outokumpu) and the simplex-lattice planning method.
Materials and Research Methods In this work, using the method of a simplex–lattice experiment design [19, 20] and the software package HSC 6.1 Chemistry (Outokumpu) [21], thermodynamic modeling of the equilibrium interphase distribution of sulfur and boron between the CaO–SiO2–B2O3–25%Al2O3–8%MgO slag system and a metal containing 0.2% C, 0.35% Si and 0.028% Al, corresponding to 16 points chemical composition of the local simplex plan.
Park, Effect of CaF2 addition on the viscosity and structure of CaO– SiO2–MnO slags, ISIJ International. 53 (2013) 958-965
Roine, HSC 6.0 chemistry reactions and equilibrium software with extensive thermochemical database and flowshut, Pori.: Outokumpu Research Oy, 2006.
Materials and Research Methods In this work, using the method of a simplex–lattice experiment design [19, 20] and the software package HSC 6.1 Chemistry (Outokumpu) [21], thermodynamic modeling of the equilibrium interphase distribution of sulfur and boron between the CaO–SiO2–B2O3–25%Al2O3–8%MgO slag system and a metal containing 0.2% C, 0.35% Si and 0.028% Al, corresponding to 16 points chemical composition of the local simplex plan.
Park, Effect of CaF2 addition on the viscosity and structure of CaO– SiO2–MnO slags, ISIJ International. 53 (2013) 958-965
Roine, HSC 6.0 chemistry reactions and equilibrium software with extensive thermochemical database and flowshut, Pori.: Outokumpu Research Oy, 2006.
Online since: May 2013
Authors: Fu Sheng Zhang, Xin Fang Feng, Jian Ouyang, Xin Tong Ma
The structure of phenolic resin was improved to enhance consolidation strength and decrease resin dosage according to its curing mechanism, and sand control costs was decreased greatly, phenolic resin with a higher consolidation strength at the lower temperature was synthesized, some factors which effect its consolidation strength was investigated deeply.
According to phenolic resin curing mechanism, its structure was improved to enhance consolidation strength and decrease resin dosage, and sand control cost was decreased remarkably Experimental Preparation of phenolic resin. ① Apparatus and materials.
The structure of phenolic resin was improved according to the phenolic resin sand control mechanism, to increase the structural strength under the same strength.
Conclusion NPF phenolic resin is synthesized according to the phenolic resin sand control mechanism and to optimize the structure of the phenolic resin and it has the high strength consolidation in lower amount.
Oilfield Chemistry, 19(2002): 287-292
According to phenolic resin curing mechanism, its structure was improved to enhance consolidation strength and decrease resin dosage, and sand control cost was decreased remarkably Experimental Preparation of phenolic resin. ① Apparatus and materials.
The structure of phenolic resin was improved according to the phenolic resin sand control mechanism, to increase the structural strength under the same strength.
Conclusion NPF phenolic resin is synthesized according to the phenolic resin sand control mechanism and to optimize the structure of the phenolic resin and it has the high strength consolidation in lower amount.
Oilfield Chemistry, 19(2002): 287-292