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Online since: April 2012
Authors: Gobwute Rujijanagul, Tawee Tunkasiri, Sukum Eitssayeam, Uraiwan Intatha, Kamonpan Pengpat, Pornchai Rachtanapun, Krit Sutjarittangtham, P. Chantawannakul, S. Sanpa
In this research, we prepare the propolis added PLA nanofibers by electrospinning technique, and study the morphology, structure, thermal property and anti-bacterial properties.
Experimental Procedure Preparation of PCL/ ethanolic extract propolis solution The PCL (Mn = 70,000-90,000) and propolis were obtained from Aldrich chemistry (USA) and Brazil, respectively.
Wnek, Materials Chemistry and Physics 113, 2009 296-302
Experimental Procedure Preparation of PCL/ ethanolic extract propolis solution The PCL (Mn = 70,000-90,000) and propolis were obtained from Aldrich chemistry (USA) and Brazil, respectively.
Wnek, Materials Chemistry and Physics 113, 2009 296-302
Online since: June 2013
Authors: Kui Lin Deng, Hui Juan Shen, Meng Wang, Xin Ma, Xue Ying Fan, Wen Hui Jin, Chun Xiu Li, Ting Gao, Xiao Dan Fu
Preparation and Drug Release Behavior from a Temperature-Sensitive Poly(aspartic acid) Derivatives Hydrogel
Kuilin Deng*, Chunxiu Li, Ting Gao, Xiaodan Fu, Wenhui Jin, Huijuan Shen, Xueying Fan, Xin Ma, Meng Wang
College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China
Tel: +86-0312-5971137; Fax: +86-0312-5079525; E-mail: dkl369@hbu.edu.cn
Keywords: Poly(aspartic acid) derivatives, PH/temperature-sensitive, Drug release
Abstract.In this paper, a new pH/temperature-sensitive beads with semi-interpenetrating polymeric network based on sodium alginate(SA) and poly(aspartic acid) derivatives(M-E-PSI) were prepared using as drug delivery carrier.
Propylene carbonate was from Aladdin Chemistry Co.
After 30 min, the beads were crosslinked to some extent so as to get the semi-interpenetrating network structure.
Propylene carbonate was from Aladdin Chemistry Co.
After 30 min, the beads were crosslinked to some extent so as to get the semi-interpenetrating network structure.
Online since: December 2012
Authors: Eva Vejmelková, Petr Konvalinka, Jiri Litos
Monitoring of deformation of structure in large scale in situ is introduced.
Accredited experiments are covering static and dynamic testing of structures.
This includes also individual parts of the structures as well.
Description of the stadium roof structure When searching for a suitable structural system for the stadium roof structure were originally designed and evaluated three alternatives.
After the unloading the structure was measured for permanent deformation.
Accredited experiments are covering static and dynamic testing of structures.
This includes also individual parts of the structures as well.
Description of the stadium roof structure When searching for a suitable structural system for the stadium roof structure were originally designed and evaluated three alternatives.
After the unloading the structure was measured for permanent deformation.
Online since: September 2018
Authors: Yu Lin Deng, Jin Sheng Feng, Xinzhu Pang, Di Wang, Bo Li, Xiao Qiong Li, Rong Ji Dai
In this situation, these reagents will destroy the activity and structure of phosphorylated proteins.
Metal ions, such as, Ti4+ and Zr4+could coordinate to phosphate groups specificity due to metal(IV) phosphonate chemistry[11].
Analytical Chemistry. 87 (2015) 4704-11
Journal of Materials Chemistry B, 2015, 3(12): 2505-2515
Analytical Chemistry, 2017, 89(4): 2405-2410
Metal ions, such as, Ti4+ and Zr4+could coordinate to phosphate groups specificity due to metal(IV) phosphonate chemistry[11].
Analytical Chemistry. 87 (2015) 4704-11
Journal of Materials Chemistry B, 2015, 3(12): 2505-2515
Analytical Chemistry, 2017, 89(4): 2405-2410
Online since: October 2011
Authors: Abdol Ghaffar Ebadi, Somayeh Alami
The structures of these compounds were confirmed by IR, 1H NMR, 13C NMR and elemental analysis.
Access to the assembly of these interpenetrated structures has been dominated by templated strategies using σ-σ donor-acceptor interactions, hydrogen bonding, metal-ligand coordination, and hydrophobic effects6 between two or more species that are neutral or cationic in nature.
In this research work, we wish to prepare a basic part of nano machines that would constitute any passive or active structure capable of actuation, sensing, signaling, information processing, intelligence, swarm behavior at the nano scale.
Therefore this molecule can be used on structure of rotaxanes and catenanes in nano machines and nano motors.
Acknowledgement All authors strongly will present special thanks for Department of Chemistry in IAU, Jouybar branch and IAU, Tabriz branch for their scientific and finance supports.
Access to the assembly of these interpenetrated structures has been dominated by templated strategies using σ-σ donor-acceptor interactions, hydrogen bonding, metal-ligand coordination, and hydrophobic effects6 between two or more species that are neutral or cationic in nature.
In this research work, we wish to prepare a basic part of nano machines that would constitute any passive or active structure capable of actuation, sensing, signaling, information processing, intelligence, swarm behavior at the nano scale.
Therefore this molecule can be used on structure of rotaxanes and catenanes in nano machines and nano motors.
Acknowledgement All authors strongly will present special thanks for Department of Chemistry in IAU, Jouybar branch and IAU, Tabriz branch for their scientific and finance supports.
Online since: April 2009
Authors: Maria Balasoiu, M.L. Craus, N. Cornei, M. Lozovan
Mangeron 47, Romania, 3Faculty of Chemistry, "Al.I.Cuza" University,
Blvd.
XRD analysis, performed with a Huber diffractometer at room temperature, indicated that the manganites contain perovskite phases, with Pnma structure.
The double-exchange and superexchange (SE) interactions ratio depends on the geometrical features of the perovskite structure.
We reported the results concerning the crystalline structure and transport phenomena of some La0.54Ho0.11(Ca,Sr)0.35x(Na,K)xMnO3 manganites.
Both rows are formed from the manganites with pure perovskite phase with a Pnma structure.
XRD analysis, performed with a Huber diffractometer at room temperature, indicated that the manganites contain perovskite phases, with Pnma structure.
The double-exchange and superexchange (SE) interactions ratio depends on the geometrical features of the perovskite structure.
We reported the results concerning the crystalline structure and transport phenomena of some La0.54Ho0.11(Ca,Sr)0.35x(Na,K)xMnO3 manganites.
Both rows are formed from the manganites with pure perovskite phase with a Pnma structure.
Online since: September 2017
Authors: V.V. Zimich
Studies of the structure and phase composition of magnesia stone was carried out by using modern research methods.
According to XRD (x-ray diffraction), the structure of the stone contains a large number of poorly soluble magnesium hydrosilicates formed by the interaction of MgO with silica gel ATP.
Study of chipping of the stones surfaces in reflected electrons showed that these additives are distributed on the surface of the structure-forming minerals, without embedding into them.
With the introduction of these additives cations of divalent iron replacing part of the cations of magnesium, are built into the structure of the oxy hydrochlorides and form a new insoluble iron compounds.
Menkovsky, Physical and Colloid Chemistry, Chemistry, Moscow, 1981
According to XRD (x-ray diffraction), the structure of the stone contains a large number of poorly soluble magnesium hydrosilicates formed by the interaction of MgO with silica gel ATP.
Study of chipping of the stones surfaces in reflected electrons showed that these additives are distributed on the surface of the structure-forming minerals, without embedding into them.
With the introduction of these additives cations of divalent iron replacing part of the cations of magnesium, are built into the structure of the oxy hydrochlorides and form a new insoluble iron compounds.
Menkovsky, Physical and Colloid Chemistry, Chemistry, Moscow, 1981
Online since: August 2011
Authors: Xiao Xia He, Jian Feng Di, Hong Jin Qi, Wen Qin Du
This paper focuses on the effect of fabric structure and component on the pore size distribution .
For cotton fabric, the peak area of the histogram of 1/2 twill weave fabric (TWF) is wider and higher than that of plain weave fabric (PWF) due to fewer structure points and more loose structure.
According to the principle of weight-classification, surface chemistry and hydromechanics, the balance relationship between liquid wicking height and liquid content in the fabric was measured.
As there are less structure points in 1/2 TWF, the structure is less tight than that of PWF.
Comparing with cotton plain structure, the structure of 1/2 twill cotton one significantly affects the pore size distribution, showing a high and wide broadband peak.
For cotton fabric, the peak area of the histogram of 1/2 twill weave fabric (TWF) is wider and higher than that of plain weave fabric (PWF) due to fewer structure points and more loose structure.
According to the principle of weight-classification, surface chemistry and hydromechanics, the balance relationship between liquid wicking height and liquid content in the fabric was measured.
As there are less structure points in 1/2 TWF, the structure is less tight than that of PWF.
Comparing with cotton plain structure, the structure of 1/2 twill cotton one significantly affects the pore size distribution, showing a high and wide broadband peak.
Online since: October 2010
Authors: Yoshifumi Aoi, Hiromi Nakano, Satoru Furuhata
This could imply that the ZrN and TiN formed a coherent structure in the ZrN/TiN multi-layer.
30 nm
22 nm
15 nm
10 nm
Λ= 5 nm
TiN(1 1 1)
ZrN(1 1 1)
ZrN(1 1 1)
TiN(1 1 1)
Fig 2-5. 1.
The ZrN/TiN multi-layer has a modulation structure with the clear compositional difference.
It would appear that the decreasing of the hardness was caused by reduction of strains resulting from formation of a coherent structure in the ZrN/TiN multi-layer.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
The ZrN/TiN multi-layer has a modulation structure with the clear compositional difference.
It would appear that the decreasing of the hardness was caused by reduction of strains resulting from formation of a coherent structure in the ZrN/TiN multi-layer.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Online since: October 2013
Authors: Shui Lin Tu, Zhen Yi Wu, Zheng Yang Wu
With the technology development in various fields such as physics, chemistry, biomedicine, astronomy, geoscience , etc., the demand for weak signal detection has become increasingly strong, making it a new technical discipline gradually and widely used [1-5].
Figure 1 is the structure of a cascaded bistable stochastic resonance system with noise added to step by step, in which,, are respectively output signals of first, second and third level bistable systems, and ,are respectively color noises artificially stacked in the input of signals of second and third level bistable systems.
Based on the system structure shown in figure 1, taking two levels of system as an example, we set up a step by step with noise added to cascaded bistable stochastic resonance simulation system as shown in figure 2.
Fig.1 The structure of cascaded bistable stochastic resonance system with noise added to step by step Fig.2 The simulation system of the cascaded bistable stochastic resonance system with noise added to step by step Color noise.The noise signal mixed with input signals in the first level of stochastic resonance system is normally approximately equivalent with Gaussian white noise and, the noise spectrum characteristics cannot be controlled artificially.
Physica A,2007,376:173-190 [2]Chen Changyun,Ma Meihua,Zhao Bo,et al.International Journal of Environment Analytical Chemistry,2011,1(91):112-119 [3]Wang Wei,Xiang Suyun,Xie Shaofei,et al.Molecules,2012,17:1929-1938 [4]Li Lifang,Zhu Jianyang.Physica A,2011,43(10):2991-3000 [5]Feng Guo,Zhou Yurong.Physica A,2009,388:3371-3376 [6]NIU J P,SU T,HE X H,et a1.Procedia Engineering,2010,7:377-382 [7]Li J,Li H,LEI ZH Y.Procedia Engineering,2011,15:2583-2587 [8]YIN M,LIU W.
Figure 1 is the structure of a cascaded bistable stochastic resonance system with noise added to step by step, in which,, are respectively output signals of first, second and third level bistable systems, and ,are respectively color noises artificially stacked in the input of signals of second and third level bistable systems.
Based on the system structure shown in figure 1, taking two levels of system as an example, we set up a step by step with noise added to cascaded bistable stochastic resonance simulation system as shown in figure 2.
Fig.1 The structure of cascaded bistable stochastic resonance system with noise added to step by step Fig.2 The simulation system of the cascaded bistable stochastic resonance system with noise added to step by step Color noise.The noise signal mixed with input signals in the first level of stochastic resonance system is normally approximately equivalent with Gaussian white noise and, the noise spectrum characteristics cannot be controlled artificially.
Physica A,2007,376:173-190 [2]Chen Changyun,Ma Meihua,Zhao Bo,et al.International Journal of Environment Analytical Chemistry,2011,1(91):112-119 [3]Wang Wei,Xiang Suyun,Xie Shaofei,et al.Molecules,2012,17:1929-1938 [4]Li Lifang,Zhu Jianyang.Physica A,2011,43(10):2991-3000 [5]Feng Guo,Zhou Yurong.Physica A,2009,388:3371-3376 [6]NIU J P,SU T,HE X H,et a1.Procedia Engineering,2010,7:377-382 [7]Li J,Li H,LEI ZH Y.Procedia Engineering,2011,15:2583-2587 [8]YIN M,LIU W.