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Online since: September 2016
Authors: D.A. Mirzaev, A.V. Verkhovykh, A.A. Mirzoev, G.E. Ruzanova, K.Yu. Okishev
Qiao, A nucleation mechanism of hydrogen blister in metals and alloys, Metallurgical and Materials Transactions A. 39 (2008) 87-97.
Nordlund, Kinetics versus thermodynamics in materials modeling: The case of the di-vacancy in iron, Philosophical Magazine. 90 (2010) 2585-2595.
Domain, Ab initio contribution to the study of complexes formed during dilute FeCu alloys radiation, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 202 (2003) 44-50.
Masuda, Vacancies and small vacancy clusters in BCC transition metals: Calculation of binding energy, atomic relaxation and electronic and vibrational densities of states, Journal de Physique. 43 (1982) 921-930.
Dienes, Point Defects in Metals, Gordon and Breach Science Publ., N.
Nordlund, Kinetics versus thermodynamics in materials modeling: The case of the di-vacancy in iron, Philosophical Magazine. 90 (2010) 2585-2595.
Domain, Ab initio contribution to the study of complexes formed during dilute FeCu alloys radiation, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 202 (2003) 44-50.
Masuda, Vacancies and small vacancy clusters in BCC transition metals: Calculation of binding energy, atomic relaxation and electronic and vibrational densities of states, Journal de Physique. 43 (1982) 921-930.
Dienes, Point Defects in Metals, Gordon and Breach Science Publ., N.
Online since: August 2020
Authors: Worawut Kriangkrai, Siriporn Taokaew, Nattanich Wattanaphraya
Characterization of Rheological Property of Mucoadhesive Polymeric Sol-Gel in the Presence of Black Ginger Kaempferia parviflora Extract
SIRIPORN Taokaew1,a, NATTANICH Wattanaphraya2,b,
and WORAWUT Kriangkrai2,c*
1Department of Materials Science and Technology, School of Engineering,
Nagaoka University of Technology, Nagaoka, Niigata, 940-2188, Japan
2Department of Pharmaceutical Technology, Faculty of Pharmaceutical Sciences,
Naresuan University, Phitsanulok 65000, Thailand
a t.siriporn@mst.nagaokaut.ac.jp, bcloudnine141@gmail.com, cwg.kriangkrai@gmail.com
Keywords: Rheological property, sol-gel transition, gel point, Kaempferia parviflora, mucoadhesion
Abstract.
Materials and Methods Materials The base polymer Eudragit E100Ò (Evonik, Germany) and the mucoadhesive polymers, which were hydroxypropyl cellulose (HPC, Nippon Soda, Japan), polyvinyl alcohol (PVA, Shin-Etsu Chemical, Japan), Poloxamer 407 (BASF, Canada), and polyvinylpyrrolidone (PVP) K90 (Fluka, Switzerland) were kindly supplied by Jebsen & Jessen Ingredients, Thailand.
Karolewicz, A review of polymers as multifunctional excipients in drug dosage form technology, Saudi Pharmaceutical Journal 24 (2016) 525-536.
Materials and Methods Materials The base polymer Eudragit E100Ò (Evonik, Germany) and the mucoadhesive polymers, which were hydroxypropyl cellulose (HPC, Nippon Soda, Japan), polyvinyl alcohol (PVA, Shin-Etsu Chemical, Japan), Poloxamer 407 (BASF, Canada), and polyvinylpyrrolidone (PVP) K90 (Fluka, Switzerland) were kindly supplied by Jebsen & Jessen Ingredients, Thailand.
Karolewicz, A review of polymers as multifunctional excipients in drug dosage form technology, Saudi Pharmaceutical Journal 24 (2016) 525-536.
Online since: January 2005
Authors: Nguyen Xuan Phuong Vo, Sung Pil Yoon, Suk Woo Nam, Jong Hee Han, Tae Hoon Lim, Seong Ahn Hong
Journal Citation (to be inserted by the publisher)
Copyright by Trans Tech Publications
Fabrication of an Anode-Supported Sofc with a Sol-Gel
Coating Method for a Mixed-Gas Fuel Cell
Nguyen Xuan Phuong Vo, Sung Pil Yoon*, Suk Woo Nam,
Jonghee Han, Tae-Hoon Lim and Seong-Ahn Hong
Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), Seoul, Korea
*Corresponding author : spyoon@kist.re.kr
Keywords: anode-supported SOFC, sol-gel coating method, thin electrolyte, SDC thin film.
However, material problems associated with the high operating temperature (1000℃), which include electrode sintering, gas tight sealing, interfacial diffusion between the electrode and electrolyte, mechanical stress due to different thermal expansion coefficients of the cell components, and a limited choice of expensive interconnects, give rise to recent attention towards the prospect of SOFCs being operated at reduced temperatures (500-800 ℃ ).
The working mechanism of the mixed-gas fuel cell is based on the difference in the catalytic activity for the oxidation of the fuel between two electrode materials: one material catalyzes the fuel oxidation to form the synthesis gas while the other is inactive to this reaction [3].
To make a Sm0.2Ce0.8O1.9 (SDC) sol for the electrolyte materials, an appropriate amount of Sm(NO3)3.6H2O from Aldrich (99.9% purity) and commercial ceria sol from Alfa Aesar (20% in water) were dissolved at an atomic molar ratio of Sm:Ce = 2:8 in distilled water and ethanol.
Sano: Science Vol. 288 (2000), p. 2031
However, material problems associated with the high operating temperature (1000℃), which include electrode sintering, gas tight sealing, interfacial diffusion between the electrode and electrolyte, mechanical stress due to different thermal expansion coefficients of the cell components, and a limited choice of expensive interconnects, give rise to recent attention towards the prospect of SOFCs being operated at reduced temperatures (500-800 ℃ ).
The working mechanism of the mixed-gas fuel cell is based on the difference in the catalytic activity for the oxidation of the fuel between two electrode materials: one material catalyzes the fuel oxidation to form the synthesis gas while the other is inactive to this reaction [3].
To make a Sm0.2Ce0.8O1.9 (SDC) sol for the electrolyte materials, an appropriate amount of Sm(NO3)3.6H2O from Aldrich (99.9% purity) and commercial ceria sol from Alfa Aesar (20% in water) were dissolved at an atomic molar ratio of Sm:Ce = 2:8 in distilled water and ethanol.
Sano: Science Vol. 288 (2000), p. 2031
Online since: January 2015
Authors: Xu Zhang, Ming Zhu Liu, Yun Xiong
Experimental
Materials.
Guar gum (GG, food grade, MW 220,000, Wuhan Tianyuan Biology Co., China), Pentaerythritol triacrylate (PETA, AR, Guangzhou Sunlake Trading Co., Ltd., China), trimethylolpropane triglycidyl ether (TMPTGE, industrial grade, Taizhou Whaley Synthetic Materials Co., Ltd., China) and ammonium persulfate (APS, AR, Xi'an Chemical Reagent Factory, China) were used directly.
Acknowledgement This work is supported by National Natural Science Foundation of China (No. 21202076), Special Doctorial Funds of the Ministry of Education of China (No. 20110211120015), Natural Science Funds of Hubei Province (No. 2014CFB783), Scientific Research Funds of Wuhan Institute of Technology (No.
Kabiri, Advances in non-hygienic applications of superabsorbent hydrogel materials.
Babazadeh, Preparation and Properties of Carrageenan-g-Poly (Acrylic Acid)/Bentonite Superabsorbent Composite, Journal of Biomaterials and Nanobiotechnology 2 (2011) 311-317
Guar gum (GG, food grade, MW 220,000, Wuhan Tianyuan Biology Co., China), Pentaerythritol triacrylate (PETA, AR, Guangzhou Sunlake Trading Co., Ltd., China), trimethylolpropane triglycidyl ether (TMPTGE, industrial grade, Taizhou Whaley Synthetic Materials Co., Ltd., China) and ammonium persulfate (APS, AR, Xi'an Chemical Reagent Factory, China) were used directly.
Acknowledgement This work is supported by National Natural Science Foundation of China (No. 21202076), Special Doctorial Funds of the Ministry of Education of China (No. 20110211120015), Natural Science Funds of Hubei Province (No. 2014CFB783), Scientific Research Funds of Wuhan Institute of Technology (No.
Kabiri, Advances in non-hygienic applications of superabsorbent hydrogel materials.
Babazadeh, Preparation and Properties of Carrageenan-g-Poly (Acrylic Acid)/Bentonite Superabsorbent Composite, Journal of Biomaterials and Nanobiotechnology 2 (2011) 311-317
Online since: February 2014
Authors: Yue Zhang, Yuan Fa Ding, Xiang Dong Su, Zhi Min Guo
Molecular Dynamics Simulation of Void Structures in Vitreous Silica
Yuanfa Ding1, a, Zhimin Guo2,b, Xiangdong Su1,c*, Yue Zhang3,d
1Guizhou Academy of Sciences, Guiyang, 550001, PR China
2Beijing Sinoma Synthetic Crystals Co., Ltd., Beijing 100018, PR China
3School of Materials and Science, Beihang University, Beijing 100191, PR China
ayfding@sina.com, bguozhm@126.com, csuxiangdong01@sina.com, dzhangy@buaa.edu.cn
* Corresponding author: X.D.
Introduction Highly pure vitreous silica is a typical heat-resistant material.
In addition, this material has excellent electrical and optical properties.
Therefore, it is often served as multifunctional material at extremely high temperature.
Warren: Journal of Applied Crystallography Vol. 2 (1969), p. 164
Introduction Highly pure vitreous silica is a typical heat-resistant material.
In addition, this material has excellent electrical and optical properties.
Therefore, it is often served as multifunctional material at extremely high temperature.
Warren: Journal of Applied Crystallography Vol. 2 (1969), p. 164
Online since: September 2021
Authors: Stanislav Pankov, Raisa Gorshkova, Dara Slobodova
The application of the method of baroextraction in a static mode made it possible to increase the yield of pectic substances and oligosaccharides for all studied types of raw materials.
Figure 1 - Device for Bfr 1 - extraction column; 2 - filter; 3 - heating element; 4 - injection pump; 5 - raw materials; 6, 7, 8 - vessels with solutions for pretreatment, hydrolysis extraction and washing; 9 - valve for steam release; 10 - pressure sensor; 11 - temperature sensor; 12 - container for collecting the extract; 13 - pectin solution.
Narain, Polymer Science and Nanotechnology Fundamentals and Applications, Elsevier, 2020 [2] S.
Journal of Agricultural and Food Chemistry 68 (46) (2020) 12993-13000 [4] S.
Natural and technical sciences, N 3 (2020) 91-97
Figure 1 - Device for Bfr 1 - extraction column; 2 - filter; 3 - heating element; 4 - injection pump; 5 - raw materials; 6, 7, 8 - vessels with solutions for pretreatment, hydrolysis extraction and washing; 9 - valve for steam release; 10 - pressure sensor; 11 - temperature sensor; 12 - container for collecting the extract; 13 - pectin solution.
Narain, Polymer Science and Nanotechnology Fundamentals and Applications, Elsevier, 2020 [2] S.
Journal of Agricultural and Food Chemistry 68 (46) (2020) 12993-13000 [4] S.
Natural and technical sciences, N 3 (2020) 91-97
Online since: February 2012
Authors: Guang Ming Wu, Guang Jian Xing, Yan Ying Zhu, Yang Zhou, De Wen Gao, Zhi Qian Zhang, Yang Cao
Generally, these methods require expensive and sophisticated equipments, such as vacuum and preparation of target materials.
Therefore, it is important to develop new processing material methods with low costs and simple technology to prepare ITO thin films.
Journal of Synthetic Crystals. 2006, 35(2): 272-275
Materials Science and Engineering B.(2009)282-285
Yunnan: Kunming university of science and technology. (2009)1-7
Therefore, it is important to develop new processing material methods with low costs and simple technology to prepare ITO thin films.
Journal of Synthetic Crystals. 2006, 35(2): 272-275
Materials Science and Engineering B.(2009)282-285
Yunnan: Kunming university of science and technology. (2009)1-7
Online since: June 2012
Authors: Yan Xiao, Lei Li, Rui Zhen Yang
Introduction
With the social progress and booming economical development, the demand of conventional construction materials such as steel and concrete are at an unprecedented level throughout the world.
However, the processes of producing these materials usually accompany with high energy consuming and severe environment pollution.
(1) We consider the following values for the following parameters: Cross-sectional areas of materials A and B, AA=0.8Atotal,AB=0.2Atotal, compliances of materials DA=1/15GPa-1, DB=1/22GPa-1, creep coefficient ΦA=5.0,ΦB=2.5, τA=500days and τB=1000days, the stress applied on the piers is 0.1Mpa.
References [1] Yan Xiao, Quan Zhou, Bo Shan, Design and Construction of Modern Bamboo Bridges, Journal of bridge engineering, ASCE September/October 2010,533-541
[2] Bo Shan,Quan Zhou,Yan Xiao, Research and Application of Modern Bamboo Structure Pedestrian Bridge, Journal of Hunan University(Natural Sciences), Vol 36, No.10,Oct.2009, 29-34
However, the processes of producing these materials usually accompany with high energy consuming and severe environment pollution.
(1) We consider the following values for the following parameters: Cross-sectional areas of materials A and B, AA=0.8Atotal,AB=0.2Atotal, compliances of materials DA=1/15GPa-1, DB=1/22GPa-1, creep coefficient ΦA=5.0,ΦB=2.5, τA=500days and τB=1000days, the stress applied on the piers is 0.1Mpa.
References [1] Yan Xiao, Quan Zhou, Bo Shan, Design and Construction of Modern Bamboo Bridges, Journal of bridge engineering, ASCE September/October 2010,533-541
[2] Bo Shan,Quan Zhou,Yan Xiao, Research and Application of Modern Bamboo Structure Pedestrian Bridge, Journal of Hunan University(Natural Sciences), Vol 36, No.10,Oct.2009, 29-34
Online since: December 2014
Authors: Pâmela Teixeira Fernandes, Ângelo Márcio Oliveira Sant’Anna, Osiris Canciglieri Junior
Using biodegradable materials.
Using recycled and/or recyclable materials. - Prioritizing the use of low-impact materials considering the largest possible number of stages of the product life cycle
DFA, DFD, DFM and DFRR … Strategy DFE - Plan End-of-life Production Avoiding the union of incompatible materials. - Facilitating the disassembly and separation of materials
DFD and DFR Identifying the materials that compose the products. - Positioning data about materials visibly and preferably directly on the product.* - Providing information to the user about the correct disposal of the product.* - Identifying materials according to ISO14021:1999.* - Providing additional information such as number of recycling made or additives used in the composition of the materials.
The evaluation of the products presented in the three cases, the excessive use of materials besides incomplete information about the materials used and the correct way of disposal.
Using recycled and/or recyclable materials. - Prioritizing the use of low-impact materials considering the largest possible number of stages of the product life cycle
DFA, DFD, DFM and DFRR … Strategy DFE - Plan End-of-life Production Avoiding the union of incompatible materials. - Facilitating the disassembly and separation of materials
DFD and DFR Identifying the materials that compose the products. - Positioning data about materials visibly and preferably directly on the product.* - Providing information to the user about the correct disposal of the product.* - Identifying materials according to ISO14021:1999.* - Providing additional information such as number of recycling made or additives used in the composition of the materials.
The evaluation of the products presented in the three cases, the excessive use of materials besides incomplete information about the materials used and the correct way of disposal.
Online since: December 2022
Authors: Nurul J. Alwi, Nazrizawati Ahmad Tajuddin
Alwi1,b
1School of Chemistry and Environment, Faculty of Applied Sciences,
Universiti Teknologi MARA, 40450 Shah Alam,
Selangor, Malaysia
a*nazriza@uitm.edu.my, bnjalwi75@gmail.com
Keywords: Jatropha curcas, plant oil, biolubricant, esterification, biodegradble
Abstract.
In this study, the Jatropha Curcas oil had been used as a raw material in the production of the biolubricant process with the enhancement of the lubricant properties by the aid of 2,3-butanediol which act as a capping material.
Material and Methods Hydrolysis of Jatropha Curcas Oil The Jatropha Curcas oil (JCO) were purchased from Biofuel Bionas Sdn Bhd, Kuala Lumpur.
Ghazi, Reduction of free fatty acids in crude Jatropha curcas oil via an esterification process, International Journal of Engineering and Technology, (2008).
Salimon, The Effects of Various Acid Catalyst on the Esterification of Jatropha Curcas Oil based Trimethylolpropane Ester as Biolubricant Base Stock, E-Journal Chem., vol. 8, no.
In this study, the Jatropha Curcas oil had been used as a raw material in the production of the biolubricant process with the enhancement of the lubricant properties by the aid of 2,3-butanediol which act as a capping material.
Material and Methods Hydrolysis of Jatropha Curcas Oil The Jatropha Curcas oil (JCO) were purchased from Biofuel Bionas Sdn Bhd, Kuala Lumpur.
Ghazi, Reduction of free fatty acids in crude Jatropha curcas oil via an esterification process, International Journal of Engineering and Technology, (2008).
Salimon, The Effects of Various Acid Catalyst on the Esterification of Jatropha Curcas Oil based Trimethylolpropane Ester as Biolubricant Base Stock, E-Journal Chem., vol. 8, no.