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Online since: October 2014
Authors: Saiful Amri Mazlan, Hairi Zamzuri, Ubaidillah Ubaidillah, Joko Sutrisno
MRE has two kinds structure namely isotropic and anisotropic according to its particle distribution.
Both MRE structures are illustrated in Fig. 1.
Nevertheless, by looking to its physical behavior and basic structure of material, MRE can be occupied to MRF applications.
Wang, Development of an adaptive tuned vibration absorber with magnetorheological elastomers, Smart Material Structures. 15 (2006) N111-N116
Peng, Control of damping properties of magnetorheological elastomers by using polycaprolactone as a temperature-controlling, Industrial & Engineering Chemistry Research. 51 (2012) 6395-6403
Both MRE structures are illustrated in Fig. 1.
Nevertheless, by looking to its physical behavior and basic structure of material, MRE can be occupied to MRF applications.
Wang, Development of an adaptive tuned vibration absorber with magnetorheological elastomers, Smart Material Structures. 15 (2006) N111-N116
Peng, Control of damping properties of magnetorheological elastomers by using polycaprolactone as a temperature-controlling, Industrial & Engineering Chemistry Research. 51 (2012) 6395-6403
Online since: December 2016
Authors: Ruta Švinka, Julija Bobrovik, Visvaldis Svinka
Highly porous ceramic structure forms as a result of sintering of dried samples.
Pore structure of synthesized materials.
Pore structure of obtained materials depends on both composition and sintering temperature.
The pore structure of samples sintered at 1400°C temperature was different for all types of additives.
Such changes of mechanical properties of obtained materials may be explained with influence of pore structure.
Pore structure of synthesized materials.
Pore structure of obtained materials depends on both composition and sintering temperature.
The pore structure of samples sintered at 1400°C temperature was different for all types of additives.
Such changes of mechanical properties of obtained materials may be explained with influence of pore structure.
Online since: May 2011
Authors: Zheng Yu Jin, Bo Cui, Cong Ping Tan, Na Zhao
By rheological properties measurement, the jam composition, internal structure and shape of molecular chain were understood.
From the micro- structure research, it showed the binding mode between cross-linked acetylated starch and jam pectin.
The phenomenon indicated that the particles of jam form bonding force network and produce three-dimensional network structure when the system were static.
Native starch combining with pectin in apple pulp made gel structure weaken.
Handa: Chemistry and uses of pectin -a preview.
From the micro- structure research, it showed the binding mode between cross-linked acetylated starch and jam pectin.
The phenomenon indicated that the particles of jam form bonding force network and produce three-dimensional network structure when the system were static.
Native starch combining with pectin in apple pulp made gel structure weaken.
Handa: Chemistry and uses of pectin -a preview.
Online since: June 2018
Authors: Ahmed F. Mohammed, Omar A. Ibrahim, Wasan R. Saleh
The band gap energy (Eg) of the prepared ZnS QDs is larger than that of bulk; this confirms that the prepared material has nano structure.
Dorokhin, Surface engineered quantum dots in photoelectron chemistry and supramolecular assembly, Ph.D.
Tauc, Optical properties and electronic structure of amorphous Ge and Si.
Ni et al., Self-assembly of CuS nanoparticles to solid, hollow, spherical and tubular structures in a simple aqueous-phase reaction.
Journal of Physical Chemistry. 87, (1983), 4888–4893
Dorokhin, Surface engineered quantum dots in photoelectron chemistry and supramolecular assembly, Ph.D.
Tauc, Optical properties and electronic structure of amorphous Ge and Si.
Ni et al., Self-assembly of CuS nanoparticles to solid, hollow, spherical and tubular structures in a simple aqueous-phase reaction.
Journal of Physical Chemistry. 87, (1983), 4888–4893
Online since: January 2017
Authors: Hui Ying Chen, Xuan Xing, Jian Xin Xia, Xin Yu Zhuang, Hong Yu Li, Li Mei Ai, Yi Hu Wang, Qian Wang, Yi Nan Li
Rare earth element La is doping into PbO2 layer to improve the lattice structure and the catalytic performance.
From Figure 2 four groups sample’s surface morphology results that, with the increase of temperature, Ti plate surface particles became finely, linked closely and surface structure increased loose.
Figure 4 (b) and (b') shows that in holes on the surface increased obviously, and it presents honeycomb structure.
Chinese Journal of Applied Chemistry 2000, 17(5):555-557.
Environmental Chemistry,2006,25(4):429-434.
From Figure 2 four groups sample’s surface morphology results that, with the increase of temperature, Ti plate surface particles became finely, linked closely and surface structure increased loose.
Figure 4 (b) and (b') shows that in holes on the surface increased obviously, and it presents honeycomb structure.
Chinese Journal of Applied Chemistry 2000, 17(5):555-557.
Environmental Chemistry,2006,25(4):429-434.
Online since: February 2019
Authors: Liliana Sachelarie, Nicoleta Dumitrascu, Adina Rotaru-Birgaoanu, Teodora Teslaru, R. Ionut Olariu, Ionut Chirap
Dumitrascu6,f
1.2,4,6 Iasi Plasma Advanced Research Center (IPARC), Faculty of Physics, Alexandru Ioan Cuza University of Iasi, Romania
3Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, Romania
5Faculty of Dentistry, Apollonia University of Iasi, Romania
aadinabirgaoanu@yahoo.com, bteslaruteodora@yahoo.com, colariuionut@yahoo.com, dkyrry19@yahoo.com, e*lisachero@yahoo.com, fnicoleta.dumitrascu@yahoo.com
Keywords: Enamel Surface, Acid-Etching, UV Radiation, PlasBeam Treatment, Sealant Adhesion
Abstract.
At the same time, the acid-etching leads to modifications of the enamel chemistry, changing it from a low-reactive surface to one that is more susceptible at the sealant adhesion.
In the case of UV pretreatment, the energy of photons is high enough to break down most of the bonds related to enamel chemistry, which could induce physical and chemical modifications favorable to the enhancement of sealant at the surface.
Manole, Etching Treatment Effect on Surface Morphology of Dental Structures, Rev.Chim. (2017); 68:2700-2703 [31] Yamada Y, Hossain M, Shimizu Y, Kimura Y, Masuda Y, Nakamura Y, Matsumoto K.
At the same time, the acid-etching leads to modifications of the enamel chemistry, changing it from a low-reactive surface to one that is more susceptible at the sealant adhesion.
In the case of UV pretreatment, the energy of photons is high enough to break down most of the bonds related to enamel chemistry, which could induce physical and chemical modifications favorable to the enhancement of sealant at the surface.
Manole, Etching Treatment Effect on Surface Morphology of Dental Structures, Rev.Chim. (2017); 68:2700-2703 [31] Yamada Y, Hossain M, Shimizu Y, Kimura Y, Masuda Y, Nakamura Y, Matsumoto K.
Online since: July 2006
Authors: Roger N. Lumley, A.J. Morton, Ian J. Polmear, A. Crosky, J. Buha
The size, chemistry and
distribution of the final precipitates varied considerably depending on which final ageing
temperature was used (Tables 4&5).
In addition, these precipitate chemistries were substantially different from those observed following a T6 temper (Table 6).
If ageing at an elevated temperature is resumed, then the microstructure contains precipitates that are more finely dispersed, and may have different chemistries than those formed during a single stage, T6 treatment. 3.
[1] Löffler, H., Structure and development of Al-Zn alloys, (Academie Verlag, Berlin, 1995)
In addition, these precipitate chemistries were substantially different from those observed following a T6 temper (Table 6).
If ageing at an elevated temperature is resumed, then the microstructure contains precipitates that are more finely dispersed, and may have different chemistries than those formed during a single stage, T6 treatment. 3.
[1] Löffler, H., Structure and development of Al-Zn alloys, (Academie Verlag, Berlin, 1995)
Online since: December 2011
Authors: Zhi Zhang, Huai Li Zheng, Zhen Zhen Jiang, Wei Fan, Jun Ren Zhu, Qing Qing Guan, Wei Lu
Navas A[12] and some other specialist point out that urban soil’s physical and chemistry property affluence urban soil heavy metal pollution greatly.
The urban soil pollution material directly or through hazardous waste, water and air indirectly discharge to the urban soil system, which make the change of the structure and function of the urban soil system, destroy the balance of the ecosystem and bring about urban soil pollution.
Composite soil pollution will occur adsorption behavior, chemistry, microbial process of interaction, which will make certain effects on the characteristics of the urban soil, Pollutant migration transformed, soil pollution repair etc.
The chemical speciation of heavy metals in Nanjing, Environmental Chemistry. 22 (2003) 133-136
The urban soil pollution material directly or through hazardous waste, water and air indirectly discharge to the urban soil system, which make the change of the structure and function of the urban soil system, destroy the balance of the ecosystem and bring about urban soil pollution.
Composite soil pollution will occur adsorption behavior, chemistry, microbial process of interaction, which will make certain effects on the characteristics of the urban soil, Pollutant migration transformed, soil pollution repair etc.
The chemical speciation of heavy metals in Nanjing, Environmental Chemistry. 22 (2003) 133-136
Online since: November 2012
Authors: António Sergio Pouzada, Carla I. Martins, Fantina R. Esteves
The percentage of CBA used seems to have a negligible effect on the structure developed, since the bubble distribution is similar in both conditions.
Regarding the effect of mould materials, a symmetrical structure is observed when the steel mould is used, whereas for the hybrid mould the structure is different on each side.
The micrographs depict the effect of the mould filling percentage on the structure developed within the part.
In addition, morphologically, mouldings produced with 80% of mould filling present a skin/core structure more symmetrical in cross section.
Torres, Rheological Comparison of Chemical and Physical Blowing Agents in a Thermoplastic Polyolefin, Industrial & Engineering Chemistry Research 45 (2006) 2734-2740
Regarding the effect of mould materials, a symmetrical structure is observed when the steel mould is used, whereas for the hybrid mould the structure is different on each side.
The micrographs depict the effect of the mould filling percentage on the structure developed within the part.
In addition, morphologically, mouldings produced with 80% of mould filling present a skin/core structure more symmetrical in cross section.
Torres, Rheological Comparison of Chemical and Physical Blowing Agents in a Thermoplastic Polyolefin, Industrial & Engineering Chemistry Research 45 (2006) 2734-2740
Online since: July 2011
Authors: Jia Zi Shi, Xing Dang, Chuan Zhong Chen
In order to deposit films without columnar structure (thus with good mechanical properties), a low processing pressure of Ar gas (0.5-5 mTorr) is essential[13].
The films prepared at high pressures (7 mTorr) reveal a well-defined clustered columnar structure (Fig. 2(a) and (b)), whereas the film grown at low argon working pressures (0.5 mTorr) exhibits a dense structure and columnar grains are not evidently seen (Fig. 2(c)).
They found that the films prepared at a high Ar gas pressure exhibited a columnar structure, while films deposited at a low Ar gas pressure showed smooth and featureless structure.
Cross-section morphology shows the coarse columnar structure (Fig. 3(b)), with the Ar gas pressure decreased to 10 mTorr, the prepared films still have a column structure and there are many particles existed inside (Fig. 3(c)), the cross-section morphology shows some tearing features and exhibits a uniform structure (Fig. 3(d)).
Jayakumar: Materials Chemistry and Physics Vol. 97 (2006), p. 308 [11] C.L.
The films prepared at high pressures (7 mTorr) reveal a well-defined clustered columnar structure (Fig. 2(a) and (b)), whereas the film grown at low argon working pressures (0.5 mTorr) exhibits a dense structure and columnar grains are not evidently seen (Fig. 2(c)).
They found that the films prepared at a high Ar gas pressure exhibited a columnar structure, while films deposited at a low Ar gas pressure showed smooth and featureless structure.
Cross-section morphology shows the coarse columnar structure (Fig. 3(b)), with the Ar gas pressure decreased to 10 mTorr, the prepared films still have a column structure and there are many particles existed inside (Fig. 3(c)), the cross-section morphology shows some tearing features and exhibits a uniform structure (Fig. 3(d)).
Jayakumar: Materials Chemistry and Physics Vol. 97 (2006), p. 308 [11] C.L.