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Online since: July 2012
Authors: Kanatip Kumproa, Suttipong Singhykaew, Apinon Nuntiya
Effects of Reaction Time and Hydrochloric Acid Concentration on Acid Hydrolysis of Rice Husk by Reflux Method
Kanatip Kumproa1, a, Suttipong Singhykaew 2, b and, Apinon Nuntiya 2,c
1Department of Physics and Materials Science, Faculty of Science,
Chiang Mai University, Chiang Mai, Thailand
2Department of Industrial Chemistry, Faculty of Science,
Chiang Mai University, Chiang Mai, Thailand
akenkanatip@gmail.com, bdigitalaui@hotmail.com, cnuntiyaapinon@gmail.com
Keywords: Rice husk, Cellulose, Hydrolysis, Reflux method, UV spectrophotometer
Abstract.
Furthermore, Fig. 3(d) shows surface feature of cell wall that the surface is highly ridged and ridged structures have a linear profile.
Acknowledgements The authors would like to acknowledge Department of Industrial Chemistry and Department of Physics and Materials Science, Faculty of Science and the Graduate School, Chiang Mai University, Thailand and Science Achievement Scholarship of Thailand (SAST) for chemical materials and financial support of this work.
Goyal, in: 6th International Symposium on Wood and Pulping Chemistry, Conference Proceedings, (1991) [10] D.
Furthermore, Fig. 3(d) shows surface feature of cell wall that the surface is highly ridged and ridged structures have a linear profile.
Acknowledgements The authors would like to acknowledge Department of Industrial Chemistry and Department of Physics and Materials Science, Faculty of Science and the Graduate School, Chiang Mai University, Thailand and Science Achievement Scholarship of Thailand (SAST) for chemical materials and financial support of this work.
Goyal, in: 6th International Symposium on Wood and Pulping Chemistry, Conference Proceedings, (1991) [10] D.
Online since: May 2015
Authors: Hao Yin Ni, Cai Xia Chen
However, a large reactor with more silicon rods may pose complex inner structures and result in more complicated gas fluid dynamics and large temperature gradients.
The turbulence-chemistry interactions are modeled by the Eddy- Dissipation-Concept (EDC) model. 2.4 Radiation model In a Siemens reactor, silicon rods are continuously heated to maintain a surface temperature as high as 1373 K, hence, the radiation heat transfers between rods, rods-walls and wall-gases are significant.
In-situ adaptive tabulation (ISAT) is used to accelerate the chemistry calculations.
The Journal of Physical Chemistry A
The turbulence-chemistry interactions are modeled by the Eddy- Dissipation-Concept (EDC) model. 2.4 Radiation model In a Siemens reactor, silicon rods are continuously heated to maintain a surface temperature as high as 1373 K, hence, the radiation heat transfers between rods, rods-walls and wall-gases are significant.
In-situ adaptive tabulation (ISAT) is used to accelerate the chemistry calculations.
The Journal of Physical Chemistry A
Online since: January 2013
Authors: Zhi Liang Jiang, Ai Hui Liang, Mei Ling Tang, Qing Ye Liu
Recently, some new aptamer technique and new nanomaterials have been utilized in analytical chemistry.
Nanoparticle, with novel chemical and physical properties and good biocompatibility, has broad application prospects in analytical chemistry.
Nanocatalytic reactions can magnify signal, such as nanogold catalytic reactions have been applied in analytical chemistry, but the nanocatalytic reaction types are few and its activity is low.
Schuh, Electrodeposited Al-Mn alloys with microcrystalline, nanocrystalline, amorphous and nano-quasicrystalline structures, Acta Mat. 57 (2009) 3810-3822.
Nanoparticle, with novel chemical and physical properties and good biocompatibility, has broad application prospects in analytical chemistry.
Nanocatalytic reactions can magnify signal, such as nanogold catalytic reactions have been applied in analytical chemistry, but the nanocatalytic reaction types are few and its activity is low.
Schuh, Electrodeposited Al-Mn alloys with microcrystalline, nanocrystalline, amorphous and nano-quasicrystalline structures, Acta Mat. 57 (2009) 3810-3822.
Online since: September 2013
Authors: Guo Qing Wang, Ying Fan Liu, Jun Li, Chun Hong Dong, Shao Wei Zhao
Dependent Component Analysis and Its Applications for Estimation of Source Ultraviolet Spectral Profiles and Characterization of Processing Batch for Preparation of Radix Scutellariae
Chunhong Dong1, Jun Li2, Yingfan Liu1, Shaowei Zhao1, Guoqing Wang1,a
1 School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China
2 Department of Chemistry and Biology, Jiaozuo Teachers College, Jiaozuo 454000, China
agqwang@zzuli.edu.cnl
Keywords: Dependent Component Analysis (DCA), Independent Component Analysis (ICA), Radix Scutellariae, Ultraviolet Spectroscopy (UV), Process Analysis.
Comparison of efficiency of FastICA and DCA In general ICA applications in signal processing for analytical chemistry, FastICA, which is based on a fixed-point iteration scheme for finding a maximum of the non-Gaussianity of components sequentially using a deflation scheme [14], is a classic ICA algorithm and often used for comparison of the efficiency for extraction of source signals from the mixed data [15].
In practically, a pure signal, or spectrum of a compound in chemistry, is usually not fully independent but somewhat independent/dependent.
It also should be noted that the estimated DCs maybe not identical to the spectra of the pure chemical components, instead, one DC represents a class of pure components with similar chemical structures, or sometimes maybe the adducts of some chemical components with active groups in the natural state of the medical plants.
Comparison of efficiency of FastICA and DCA In general ICA applications in signal processing for analytical chemistry, FastICA, which is based on a fixed-point iteration scheme for finding a maximum of the non-Gaussianity of components sequentially using a deflation scheme [14], is a classic ICA algorithm and often used for comparison of the efficiency for extraction of source signals from the mixed data [15].
In practically, a pure signal, or spectrum of a compound in chemistry, is usually not fully independent but somewhat independent/dependent.
It also should be noted that the estimated DCs maybe not identical to the spectra of the pure chemical components, instead, one DC represents a class of pure components with similar chemical structures, or sometimes maybe the adducts of some chemical components with active groups in the natural state of the medical plants.
Online since: April 2011
Authors: Wu Yang, Guang Fu Li, Ke Wei Fang, Guan Jun Li, Mao Long Zhang, Zhi Yuan Sun
The bulk weld metal of 52M is austenite with typical dendritic structures developed along the direction of cooling.
The increase of SCC susceptibility with the rise of electrode potential suggests that the mechanism of the SCC should be anodic dissolution, which can be explained by using both the slip-dissolution model for SCC in high temperature water environments [7], and the research results on the relationship among water chemistries in bulk solution and crack tip solution and SCC behavior of metals in the environments [8-9].
Young, Characterization of the Roles of Electrochemistry, Convection and Crack Chemistry in Stress Corrosion Cracking, Proc. 7th Int.
Shoji, The crack tip solution chemistry in sensitized stainless steel in simulated boiling water reactor water studied using a micro-sampling technique, Journal of Nuclear Science and Technology, 2003, Vol.40, No.6, pp 397-404.
The increase of SCC susceptibility with the rise of electrode potential suggests that the mechanism of the SCC should be anodic dissolution, which can be explained by using both the slip-dissolution model for SCC in high temperature water environments [7], and the research results on the relationship among water chemistries in bulk solution and crack tip solution and SCC behavior of metals in the environments [8-9].
Young, Characterization of the Roles of Electrochemistry, Convection and Crack Chemistry in Stress Corrosion Cracking, Proc. 7th Int.
Shoji, The crack tip solution chemistry in sensitized stainless steel in simulated boiling water reactor water studied using a micro-sampling technique, Journal of Nuclear Science and Technology, 2003, Vol.40, No.6, pp 397-404.
Online since: November 2024
Authors: Mitch-Irene Kate Galvan Oyales, Kirk Benedict Beau T. Damian, Tiffany Louise B. Lao
Scale composition varies between geothermal power plants due to distinct geological features, temperature and pressure conditions, and fluid chemistry of each location [4].
Due to site-specific scale chemistry [5], understanding the initial composition is crucial for re-precipitation, as non-silica compounds can interfere with pH-based reactions [6].
Owoeye, et. al, “Effects of process variable on synthesis and characterization of amorphous silica nanoparticles using sodium silicate solutions as precursor by sol–gel method,” Nano-Structures & Nano-Objects, vol. 25, p. 100625, Feb. 2021, doi: 10.1016/j.nanoso.2020.100625
Song, et. al, “Surfactant-free synthesis of high surface area silica nanoparticles derived from rice husks by employing the Taguchi approach,” Journal of Industrial and Engineering Chemistry, vol. 61, pp. 281–287, May 2018, doi: 10.1016/j.jiec.2017.12.025
Due to site-specific scale chemistry [5], understanding the initial composition is crucial for re-precipitation, as non-silica compounds can interfere with pH-based reactions [6].
Owoeye, et. al, “Effects of process variable on synthesis and characterization of amorphous silica nanoparticles using sodium silicate solutions as precursor by sol–gel method,” Nano-Structures & Nano-Objects, vol. 25, p. 100625, Feb. 2021, doi: 10.1016/j.nanoso.2020.100625
Song, et. al, “Surfactant-free synthesis of high surface area silica nanoparticles derived from rice husks by employing the Taguchi approach,” Journal of Industrial and Engineering Chemistry, vol. 61, pp. 281–287, May 2018, doi: 10.1016/j.jiec.2017.12.025
Online since: January 2005
Authors: J. Sytchev, György Kaptay, N. Borisenko
Kaptay
Department of Physical Chemistry, University of Miskolc, Miskolc-Egyetemváros,
Hungary, 3515
Keywords: lithium chloride, lithium, deposition, intercalation, reversibility, carbon nano-tubes
Abstract.
At some point, when the stress becomes too high, the planes start to exfoliate and transfer into the molten salt, where they can bend due to attraction forces between carbon atoms having broken bonds, forming carbon tubes of different structure and size.
Kálmán, in: Progress in Molten Salt Chemistry (Elsevier, 2000, p. 257). 11.
Ark: 6th International Symposium on Molten Salt Chemistry and Technology, Shanghai, China (2001), p. 168. 12.
At some point, when the stress becomes too high, the planes start to exfoliate and transfer into the molten salt, where they can bend due to attraction forces between carbon atoms having broken bonds, forming carbon tubes of different structure and size.
Kálmán, in: Progress in Molten Salt Chemistry (Elsevier, 2000, p. 257). 11.
Ark: 6th International Symposium on Molten Salt Chemistry and Technology, Shanghai, China (2001), p. 168. 12.
Online since: May 2006
Authors: Maria Helena F.V. Fernandes, Nuno A.F. Almeida
Journal of Inorganic Chemistry, 2003: p. 1029-1042
Höland, Development, structure, properties and application of glassceramics for medicine.
Materials Chemistry and Physics, 2003. 80: p. 599-609
Kokubo, Surface chemistry of bioactive glass-ceramics.
Höland, Development, structure, properties and application of glassceramics for medicine.
Materials Chemistry and Physics, 2003. 80: p. 599-609
Kokubo, Surface chemistry of bioactive glass-ceramics.
Online since: January 2012
Authors: T. Gnanasekaran, E. Prabhu, K.I. Gnanasekar, V. Jayaraman
Gnanasekaranc
Liquid Metals and Structural Chemistry Division
Indira Gandhi Centre for Atomic Research
Kalpakkam 603 102
INDIA
aepr@igcar.gov.in, bigsk@igcar.gov.in, vjram@igcar.gov.in * & cgnani@igcar.gov.in
Keywords: semi-conducting oxide, sensitivity, thin film, selectivity, resistance & analyte gas.
Compounds with delafossite type structure MIMIIIO2 (MI = monovalent ions, Cu+ and Ag+ ; MIII = trivalent ions, Al3+, Ga3+, In3+, Cr3+ etc.,) have exhibited p-type semi-conductivity [6 – 9].
Baird, Environmental Chemistry, W.H.
Manaham, Gaseous inorganic air pollutants, Environmental Chemistry CRC Press LLC, New York, 2005, pp. 301 – 323
Compounds with delafossite type structure MIMIIIO2 (MI = monovalent ions, Cu+ and Ag+ ; MIII = trivalent ions, Al3+, Ga3+, In3+, Cr3+ etc.,) have exhibited p-type semi-conductivity [6 – 9].
Baird, Environmental Chemistry, W.H.
Manaham, Gaseous inorganic air pollutants, Environmental Chemistry CRC Press LLC, New York, 2005, pp. 301 – 323
Online since: March 2017
Authors: Nurhaslina Che Radzi, Nurul Asyikin Md Zaki, Habsah Alwi, Ku Halim Ku Hamid, Miradatul Najwa Mohd Rodhi, Muhd Anwar Ami
Once being attacked, the healthy cells can lose it function and structure, leading to aging and degenerative diseases.
Ho: submitted to Journal of Food Chemistry, 161, 246–253 (2014) [10] M.
Ho: submitted to Food Chemistry, 136(3-4), 1130–1135 (2013) [11] R.
Yıldız: submitted to Food Chemistry, 194, 587–594 (2015) [20] M.
Ho: submitted to Journal of Food Chemistry, 161, 246–253 (2014) [10] M.
Ho: submitted to Food Chemistry, 136(3-4), 1130–1135 (2013) [11] R.
Yıldız: submitted to Food Chemistry, 194, 587–594 (2015) [20] M.