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Online since: February 2018
Authors: Zao Jiang, Zhong Hui Xu, Ping Li, Na Li, Lei Zheng, Ya Hong Xu
Actually, the modified material is porous structure, the surface of the adsorbent appears more sites and channels[17], and presents the most desired absorption properties.
Kononov: Arabian Journal of Chemistry, Vol. 11 (2015) No.12, p. 141
[10] K A Emmanuel and A V Rao: Journal of Chemistry, Vol. 53 (2009) No.4, p.1446
[11] F H Li, Q Li, A J P Zhai and G H Sheng: Industrial & Engineering Chemistry Research, Vol. 46 (2007) No.22, p. 7087
Kononov: Arabian Journal of Chemistry, Vol. 11 (2015) No.12, p. 141
[10] K A Emmanuel and A V Rao: Journal of Chemistry, Vol. 53 (2009) No.4, p.1446
[11] F H Li, Q Li, A J P Zhai and G H Sheng: Industrial & Engineering Chemistry Research, Vol. 46 (2007) No.22, p. 7087
Online since: July 2024
Authors: Rabab El-Sherif, Ahmed S. Mahmoud, Dalia E. Abd-El-Khalek, E. Khamis
Recently, the use of nanotechnology has sparked major interest in transforming these facilities into smarter, more flexible, and sustainable purification configurations that take advantage of the unprecedented physicochemical properties offered by nanoscale particles and structures [10].
Their intricate chemistry containing suspended solids, salts, heavy metals, and pigments poses complex wastewater treatment challenges including scaling deposition, membrane fouling, and structural corrosion thereby increasing purification costs and environmental risks [43].
Physics and Chemistry of the Earth, Parts A/B/C, 2022. 126: p. 103152
Arabian journal of chemistry, 2019. 12(7): p. 908-931
Their intricate chemistry containing suspended solids, salts, heavy metals, and pigments poses complex wastewater treatment challenges including scaling deposition, membrane fouling, and structural corrosion thereby increasing purification costs and environmental risks [43].
Physics and Chemistry of the Earth, Parts A/B/C, 2022. 126: p. 103152
Arabian journal of chemistry, 2019. 12(7): p. 908-931
Online since: September 2014
Authors: Xue Bin Yin, Si Yuan Lin
Today, the industry has become the dominant economic force in Changchun, Changchun City, China's largest auto industry, is the new China Automotive Engineering photonics technology, biotechnology, applied chemistry cradle.
1.2 Reasons for the formation of the industrial legacy building
Changchun City in 1953-1958 during the first five-year plan built a large number of industrial buildings,mostly located in the suburbs around the city, planning and construction of industrial zones.
They are mostly hand workshops and front shop form, building smaller, low-tech, building structures mostly brick structure, unique architectural style, there are obvious characteristics of the times. 2.1.2 The Problems Changchun's early development is relatively backward, industrial buildings single function, and scale smaller, that its transformation and reuse brings some limitations.
The main plant of steel and reinforced concrete structures, the overall style of the building is the imitation of Russian classicism, there is a very important historical value.
The plant has now been abandoned and idle, building structure largely intact, but due to the lack of protection, partly damaged, environment dilapidated.
Another method is the reorganization interior features, adjustment partial of influential architectural structure.
They are mostly hand workshops and front shop form, building smaller, low-tech, building structures mostly brick structure, unique architectural style, there are obvious characteristics of the times. 2.1.2 The Problems Changchun's early development is relatively backward, industrial buildings single function, and scale smaller, that its transformation and reuse brings some limitations.
The main plant of steel and reinforced concrete structures, the overall style of the building is the imitation of Russian classicism, there is a very important historical value.
The plant has now been abandoned and idle, building structure largely intact, but due to the lack of protection, partly damaged, environment dilapidated.
Another method is the reorganization interior features, adjustment partial of influential architectural structure.
Online since: August 2023
Authors: Hui Zhou, Ke Zhang, Victoria White, Ai Yu Yan, Ronald Maus, Thomas Griot
In addition, their molecular structures impact the etching and wetting behavior, allowing the user to tailor formulations for unique applications.
For instance, XHE-128 and XHE-148 have an aliphatic ring structure, while XHE-138 and XHE-145 have a branched alkyl group.
The corrosivity can dramatically change due to the metal studied and molecular structure of the QAHs.
However, the correlation between structure and corosivity has not been clearly identified yet.
Okoroanyanwu: Chemistry and Lithography (SPIE Press, 2009)
For instance, XHE-128 and XHE-148 have an aliphatic ring structure, while XHE-138 and XHE-145 have a branched alkyl group.
The corrosivity can dramatically change due to the metal studied and molecular structure of the QAHs.
However, the correlation between structure and corosivity has not been clearly identified yet.
Okoroanyanwu: Chemistry and Lithography (SPIE Press, 2009)
Online since: May 2006
Authors: Marcela Socol, Florin Stanculescu, Anca Stanculescu, Laura Tugulea
For
PTCDA we have remarked a behaviour close to that of the most organic semiconductors
characterized by weak intermolecular van der Waals bonding forces and narrow energetic bands
structure.
The spectrum structure in UV (peaks situated at 232 nm and 261 nm) in Alq3 (Fig. 2) is hidden by the broad absorption band of the glass substrate (absorption edge around 340 nm).
This structure preserves the pattern of the absorption spectrum in PTCDA between 400-600 nm essential for the stage of the carriers' generation.
The structured features between the peaks (Fig. 4.1) can be associated with the overlapping of the emission spectrum and the second order diffraction band for λexcitation=232 nm.
Windsor, "Luminescence and energy transfer" in: Physics and chemistry of the organic solid state, Eds.
The spectrum structure in UV (peaks situated at 232 nm and 261 nm) in Alq3 (Fig. 2) is hidden by the broad absorption band of the glass substrate (absorption edge around 340 nm).
This structure preserves the pattern of the absorption spectrum in PTCDA between 400-600 nm essential for the stage of the carriers' generation.
The structured features between the peaks (Fig. 4.1) can be associated with the overlapping of the emission spectrum and the second order diffraction band for λexcitation=232 nm.
Windsor, "Luminescence and energy transfer" in: Physics and chemistry of the organic solid state, Eds.
Online since: May 2011
Authors: Guo Hong Huang, Guo Rong Duan, Ying Gong, Xin Wang
The results indicated that the adsorption behavior was closely related to the structure of polymers, the adsorption power of JS with water-reducing structure was strong, while weak with slump loss resisting polymers BT.
The present paper mainly deals with the influences of the structure change of hyperbranched polymers on the adsorption behavior between the polymers and Ca2+ ions.
The sparser the structure is, the greater the acid-ester ratio is, and the stronger the absorption ability of the corresponding polymer, conversely, it will be weaker.
The sparser the structure is, the greater the absorption power.
The concentration of CaCl2 solution at saturated adsorption between polymers with water-reducing structure and Ca2+ ions is higher, while lower for slump-retaining macromolecule.
The present paper mainly deals with the influences of the structure change of hyperbranched polymers on the adsorption behavior between the polymers and Ca2+ ions.
The sparser the structure is, the greater the acid-ester ratio is, and the stronger the absorption ability of the corresponding polymer, conversely, it will be weaker.
The sparser the structure is, the greater the absorption power.
The concentration of CaCl2 solution at saturated adsorption between polymers with water-reducing structure and Ca2+ ions is higher, while lower for slump-retaining macromolecule.
Online since: April 2016
Authors: Yu Min Wu, Jing Wang, Fu Wei Zheng, Ning Wang, Bao Rong Hou
A Comparison of Diamond-like Carbon Films Properties Obtained by Plasma Enhanced Chemical Vapor Deposition and Electro-deposition
Ning Wang1,2,a, Jing Wang2, Fu-wei Zheng3, Yu-min Wu1 and Bao-rong Hou2
1College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
2Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
3College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
awn881030@163.com
Keywords: Diamond-like carbon, MWECR-PECVD, Electro-deposition, Microstructure, Electrochemical behaviour
Abstract.
Raman spectroscopy indicates that all the films deposited by different techniques show amorphous structure and typical characteristic of DLC film.
FTIR measurements are an important tool for revealing the structure of DIC films.
Raman spectroscopy indicates that all the films deposited by different techniques show amorphous structure and typical characteristic of DLC film.
FTIR measurements are an important tool for revealing the structure of DIC films.
Online since: September 2017
Authors: L.V. Kim, E.E. Shaly
The ice drift velocities up to 2 m/s in the Sea of Okhotsk can cause severe abrasion due to mechanical contact with offshore concrete structures.
Safety operations considerably depend on valid identification of structure fracture mechanisms and the accuracy of design method with due account for structure arrangement and properties.
They are the fundamental defect of the cement stone structure.
To develop the mixed pattern for the analysis of multi-scale operational life of arctic reinforced concrete structures; No. 1 stage.
Research methodology is channeled to solving the major research tasks by means of interdisciplinary approach in conjunction with fundamental insight into multiphase moisture transport in the porous media and life length based on cement and construction life span forecast which unites computational material science, chemistry, physics and engineering technology.
Safety operations considerably depend on valid identification of structure fracture mechanisms and the accuracy of design method with due account for structure arrangement and properties.
They are the fundamental defect of the cement stone structure.
To develop the mixed pattern for the analysis of multi-scale operational life of arctic reinforced concrete structures; No. 1 stage.
Research methodology is channeled to solving the major research tasks by means of interdisciplinary approach in conjunction with fundamental insight into multiphase moisture transport in the porous media and life length based on cement and construction life span forecast which unites computational material science, chemistry, physics and engineering technology.
Online since: November 2011
Authors: Hui Jin Tao, Jian Yin
Further analyses of lattice stability from electronic structures show that the crystalline Ti,Zr and Hf with hcp structures have the obvious character of stable phases, but fcc and bcc structures have the character of metastable and unstable phases, agreeing with the results of total energy calculations.
And in the first principles calculations, the total energy and electronic structure of a micro system can be calculated with input of only atomic number and position.
For the lowest and basic order system in CALPHAD, pure elements, their total energies, lattice constants and densities of state with different structures, i.e. lattice stabilities can be calculated in first principles, and the physical reason of their lattice stabilities can be further understood in electronic structures [6-14].
The electronic structures of hcp-, fcc-, bcc-Ti, Zr and Hf are calculated in this work.
Nobes: International Journal of Quantum Chemistry Vol.77( 2000), P. 895 [20] G.
And in the first principles calculations, the total energy and electronic structure of a micro system can be calculated with input of only atomic number and position.
For the lowest and basic order system in CALPHAD, pure elements, their total energies, lattice constants and densities of state with different structures, i.e. lattice stabilities can be calculated in first principles, and the physical reason of their lattice stabilities can be further understood in electronic structures [6-14].
The electronic structures of hcp-, fcc-, bcc-Ti, Zr and Hf are calculated in this work.
Nobes: International Journal of Quantum Chemistry Vol.77( 2000), P. 895 [20] G.
Online since: August 2020
Authors: Dante P. Bernabe, Alvin R. Caparanga, Stephen Lirio, John Rhoel Cementina, Michael V. Torres, Micah Belle Marie Yap Ang
In the Chemistry department of the Chung Yuan Christian University in Taiwan, the synthesis of UiO-66(Zr) was carried out using 2 mmol of ZrCl4, 4 mmol of H2-BDC (benzenedicarboxylic acid), 2 mmol of HCl, and 50 mL of DMF.
The morphology and structure of the membranes were analyzed by scanning electron microscope (SEM, S-4800, Hitachi, Japan).
Upon addition of MOF modifier, the membrane produced finger-like structure (Fig. 2 e & f).
Thus, the pore sizes across the membrane structure are not uniform but exist as different ranges of sizes.
The increase in mechanical strength is brought about by the change in structure of the membrane [18].
The morphology and structure of the membranes were analyzed by scanning electron microscope (SEM, S-4800, Hitachi, Japan).
Upon addition of MOF modifier, the membrane produced finger-like structure (Fig. 2 e & f).
Thus, the pore sizes across the membrane structure are not uniform but exist as different ranges of sizes.
The increase in mechanical strength is brought about by the change in structure of the membrane [18].