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Online since: July 2013
Authors: Fang Jie Cheng, Jun Feng Yao, Ying Wang, Jun Xiang Yang, Guan Xing Zhang, Wei Min Long
The analyzed results show it is the difference of phase structure that leads that the melting characteristics deviation.
In the form of the phase structure, this flux sample corresponds with the AlF3-CsF binary system reported in an earlier study [11].
Advanced Inorganic Chemistry Experiment.
In the form of the phase structure, this flux sample corresponds with the AlF3-CsF binary system reported in an earlier study [11].
Advanced Inorganic Chemistry Experiment.
Online since: August 2019
Authors: Oles Lastivka, Vladimir Gots, Oleksandr Tomin, Olga Kovalchuk
This is caused by the increase in economic corrosion losses which are comparable to capital investments in certain economic sectors and decrease in life and reliability of engineering structures and products [1].
It can be explained by the fact that powder coatings have no film formation mediators (solvents, water) and surfactants and are prepared mostly on thermoreactive oligomers and polymers of the crystalline structure with the enhanced chemical resistance.
The Chemistry of the Atmosphere: Its Impact on Global Change: Perspectives and Recommendations, pp 170
It can be explained by the fact that powder coatings have no film formation mediators (solvents, water) and surfactants and are prepared mostly on thermoreactive oligomers and polymers of the crystalline structure with the enhanced chemical resistance.
The Chemistry of the Atmosphere: Its Impact on Global Change: Perspectives and Recommendations, pp 170
Online since: July 2015
Authors: Alina Plenis, Tomasz Bączek, Jarosław Szulfer, Michał Markuszewski
New Materials Applied For The Stationary Phases In View of the Optimized Hplc And UHPLC Column Classification System Used in the Pharmaceutical Analysis
Alina Plenis1,a, Tomasz Bączek1,b, Jarosław Szulfer2,c,
Michał Markuszewski3,d
1 Department of Pharmaceutical Chemistry, Medical University of Gdańsk, Gdańsk, Poland
2 Polpharma SA Pharmaceutical Works, Starogard Gdański, Poland
3 Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Gdańsk, Poland
aaplenis@gumed.edu.pl, btbaczek@gumed.edu.pl,cjaroslaw.szulfer@polpharma.com, dmarkusz@gumed.edu.pl
Keywords: Chromatographic columns; Stationary phases materials; Column classification system; UHPLC; Core-Shell (CS) columns; Pharmaceutical substances; Chemometrics
Abstract.
On the other hand, the chemical structure and spatial configuration of the ligands, ligand density, the length of hydrocarbon chains, nature of carrier material could result in differences in the number of theoretical plates, the shape of the peak, retention time, selectivity and the time of the suitability for use.
Kaliszan, QSRR: quantitative structure-(chromatographic) retention relationships, Chem.
On the other hand, the chemical structure and spatial configuration of the ligands, ligand density, the length of hydrocarbon chains, nature of carrier material could result in differences in the number of theoretical plates, the shape of the peak, retention time, selectivity and the time of the suitability for use.
Kaliszan, QSRR: quantitative structure-(chromatographic) retention relationships, Chem.
Online since: February 2012
Authors: Sumandeep Kaur, Vasundhara Singh
Fig.1, Laboratory setup for immersion well reactor (50W halogen lamp in place of the UV lamp)
Fig. 2, Laboratory set up for the sonophotocatalytic degradation of J-acid under visible light
Structure of J-acid: J-acid is 6-Amino naphthol-3-sulfonic acid as shown in Fig. 3.
Fig. 3, Structure of J-acid Estimation of COD COD was calculated as per the standard method No. 5220 C, page no. 5-14 from STANDARD METHODS for the examination of water and wastewater, 1989, 17th edition (Greenberg, 1989).
The high-energy chemistry generated by ultrasound waves in liquid medium promotes the oxidative destruction of target contaminants.
Fig. 3, Structure of J-acid Estimation of COD COD was calculated as per the standard method No. 5220 C, page no. 5-14 from STANDARD METHODS for the examination of water and wastewater, 1989, 17th edition (Greenberg, 1989).
The high-energy chemistry generated by ultrasound waves in liquid medium promotes the oxidative destruction of target contaminants.
Online since: August 2020
Authors: Ash Ahmed, Fraser Hyndman, John Kamau, Heni Fitriani
It is reported in the literature that apart from environmental advantages, the use of supplementary cementitious materials (SCMs) such as pulverised fuel ash (PFA), ground granulated blast furnace slag (GGBS), silica fume (SF) and rice husk ash (RHA) reduces the cost of concrete and improves the durability of hardened concrete, thereby enhancing the service life of structures [1 2].
[28] BSI, Eurocode 2: Design of Concrete Structures, EN 1992-1-1: General Rules and Rules for Buildings, British Standards Institution and CEN European Committee for Standardization, (2008)
Mahta, The Chemistry and Technology of Cement Made from Rich Husk Ash, Proc.
[28] BSI, Eurocode 2: Design of Concrete Structures, EN 1992-1-1: General Rules and Rules for Buildings, British Standards Institution and CEN European Committee for Standardization, (2008)
Mahta, The Chemistry and Technology of Cement Made from Rich Husk Ash, Proc.
Online since: December 2011
Authors: Xiao Lei Yang, Yong Wang, Yan Liu Ge, De Wei Deng
Nb is BCC structure always, while there is allotropic change at 862℃ with Zr α-Zr(HCP)←→β-Zr(BCC).
Fig. 12 Illustration of crystal structure change of β-Zr: (a) β-Zr poor in Nb; and (b) β-Zr rich in Nb.
Yao: The effect of water chemistry on compressive stress at interface of oxide/matrix of zircaloy-4.
Fig. 12 Illustration of crystal structure change of β-Zr: (a) β-Zr poor in Nb; and (b) β-Zr rich in Nb.
Yao: The effect of water chemistry on compressive stress at interface of oxide/matrix of zircaloy-4.
Online since: September 2018
Authors: Mosbah Zidani, Farida Khamouli, K. Digheche, A. Saoudi, L. Atoui
The microstructure of the base metal showed a ferrito-pearlitic structure [29].
Gupta Effect of submerged arc welding parameters and fluxes on element transfer behaviour and weld-metal chemistry.
Atoui, Effects of Cellulosic and Basic Flux on the Structure, Composition and Hardness of SMAW Welds on Steel X42, International Journal of Engineering Research, 27,(2016) ,11-19
Gupta Effect of submerged arc welding parameters and fluxes on element transfer behaviour and weld-metal chemistry.
Atoui, Effects of Cellulosic and Basic Flux on the Structure, Composition and Hardness of SMAW Welds on Steel X42, International Journal of Engineering Research, 27,(2016) ,11-19
Online since: April 2023
Authors: Samer Saad Abbas, Raouf Mahmood Raouf, Harith Hasoon Al-Moameri
The image in Figure (6)- B showed the coherence and homogeneity of the epoxy structure, as is evident in the single structural phase.
Some scanning electron microscope SEM images have been taken from samples with content of nanoparticles 0.05% CaTiO3, Figure (6)-C, which showed the homogeneous distribution of the nanoparticles in the epoxy structure, due to the selection of the appropriate percentage of weight, as this percentage gave the best results of the electrical and thermal tests[5].
Wu, Synthesis and red luminescence of Pr3+-doped CaTiO3 nanophosphor from polymer precursor, Journal of Solid State Chemistry 174(1) (2003) 69-73
Some scanning electron microscope SEM images have been taken from samples with content of nanoparticles 0.05% CaTiO3, Figure (6)-C, which showed the homogeneous distribution of the nanoparticles in the epoxy structure, due to the selection of the appropriate percentage of weight, as this percentage gave the best results of the electrical and thermal tests[5].
Wu, Synthesis and red luminescence of Pr3+-doped CaTiO3 nanophosphor from polymer precursor, Journal of Solid State Chemistry 174(1) (2003) 69-73
Online since: April 2015
Authors: Jian Can Yang, Zhen Liu, Jie Cao, Yan Li
Plasma Chemistry and Plasma Processing. 11(1)(1991) 81-101
Nie, Research on the performance and structure of rare-earth Mo/W cathode materials, dissertation for ph.d., Central South University of Technology, 1997
Zuo, Effect of doping methods on Characterization and Structure of Tungsten Electronic Emission Material.
Nie, Research on the performance and structure of rare-earth Mo/W cathode materials, dissertation for ph.d., Central South University of Technology, 1997
Zuo, Effect of doping methods on Characterization and Structure of Tungsten Electronic Emission Material.
Online since: June 2014
Authors: Marjan Homayoonfard, Nejat Rahmanian
Further investigation is required to characterize strength and structure of the prills using impact test [14, 15, 16, 17] and crushing strength measurements [18] to justify breakage of urea prills.
Chemistry, 517
Characterisation of granule structure and strength made in a high shear granulator.
Chemistry, 517
Characterisation of granule structure and strength made in a high shear granulator.