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Online since: February 2022
Authors: Alejandro Silva-Vela, Francine Roudet, Nataly Calderón, Paul Huanca-Zuñiga, Jonathan Almirón, Danny Tupayachy-Quispe
The morphological structure of rice husk and the composites fracture surface was analysis in a Scanning Electronic Microscope Hitachi S-3600/N.
The morphology shows a porous structure of lemma and protrusions with 6µm of diameters.
Illustrations 1a and 1b corresponds to the internal and external surface, respectively, of the porous structure of lemma.
Additionally, illustrations 2a, 2b and 2c shows the cross section of RH, where 2a corresponds the internal surface with protrusions, 2b reveals a porous structure of lemma and 2c reveals an external surface of the cross section with porous structure of lemma and protrusions [12, 13]. 1a 2a 1b 2b 2c Figure 2.
Cambridge: Royal Society of Chemistry, 2018
The morphology shows a porous structure of lemma and protrusions with 6µm of diameters.
Illustrations 1a and 1b corresponds to the internal and external surface, respectively, of the porous structure of lemma.
Additionally, illustrations 2a, 2b and 2c shows the cross section of RH, where 2a corresponds the internal surface with protrusions, 2b reveals a porous structure of lemma and 2c reveals an external surface of the cross section with porous structure of lemma and protrusions [12, 13]. 1a 2a 1b 2b 2c Figure 2.
Cambridge: Royal Society of Chemistry, 2018
Online since: March 2020
Authors: Kuan Yew Cheong, Khatijah Aisha Yaacob, Nurain Najihah Alias
AFM lithography is one of useful technique to fabricate or characterize microarrays, nanoscale structure, sensors or devices [1, 19].
In this paper we report the fabrication of a SiNWs-FET structure with enhanced technique by executing the advantages of AFM lithography in contact mode.
Then, the SiNWs-FET structure was physically fabricated using AFM lithography via LAO process.
For this structure, 9 V of applied voltage with 0.4 μm/s of writing speed and the relative humidity was between 55% - 60% was used.
Tagawa, "Nano- and micro-fabrications of polystyrene having atactic and syndiotactic structures using focused ion beams lithography," Radiation Physics and Chemistry, vol. 81, pp. 584-588, 2012
In this paper we report the fabrication of a SiNWs-FET structure with enhanced technique by executing the advantages of AFM lithography in contact mode.
Then, the SiNWs-FET structure was physically fabricated using AFM lithography via LAO process.
For this structure, 9 V of applied voltage with 0.4 μm/s of writing speed and the relative humidity was between 55% - 60% was used.
Tagawa, "Nano- and micro-fabrications of polystyrene having atactic and syndiotactic structures using focused ion beams lithography," Radiation Physics and Chemistry, vol. 81, pp. 584-588, 2012
Online since: June 2016
Authors: Antonio Ferreira Miguel
Prigogine, Structure, dissipation and life, in: M.
Prigogine, Modern Thermodynamics, From Heat Engine to Dissipative Structures, Wiley, New York, 1999
Prigogine, Time, structure, and fluctuations, Science 201 (2001) 777–785
Seleznev, Maximum entropy production principle in physics, chemistry and biology, Physics Reports 426 (2006) 1– 45
Reis, Porous and Complex Flow Structures in Modern Technologies, Springer, New York, 2004
Prigogine, Modern Thermodynamics, From Heat Engine to Dissipative Structures, Wiley, New York, 1999
Prigogine, Time, structure, and fluctuations, Science 201 (2001) 777–785
Seleznev, Maximum entropy production principle in physics, chemistry and biology, Physics Reports 426 (2006) 1– 45
Reis, Porous and Complex Flow Structures in Modern Technologies, Springer, New York, 2004
Online since: October 2011
Authors: B. Bharath, G. Pradeep Reddy
The Structure and Morphological characteristics of SnO2 powder was analyzed by X-Ray Diffraction (XRD), Atomic Force Microscopy (AFM), UV, FTIR and Scanning Electron Microscopy (SEM) techniques.
SnO2 has the rutile structure.
The stannic oxide (SnO2) crystal has a rutile structure belonging to the tetragonal system whose lattice constants are a = 4.72 A and c = 3.16 A.
Also due to this sintering the film become more stable and the sensor material gets porous structure which helps to increase the sensitivity of the sensor.
Chaudhari Nano Technology Research Laboratory, Department of Chemistry, Shri Shivaji Science College, Amravati 444602, MS, India
SnO2 has the rutile structure.
The stannic oxide (SnO2) crystal has a rutile structure belonging to the tetragonal system whose lattice constants are a = 4.72 A and c = 3.16 A.
Also due to this sintering the film become more stable and the sensor material gets porous structure which helps to increase the sensitivity of the sensor.
Chaudhari Nano Technology Research Laboratory, Department of Chemistry, Shri Shivaji Science College, Amravati 444602, MS, India
Online since: December 2024
Authors: Min Zhu, Han Yuan Huang, De Sheng Ma, Zhao Qun Shao
The research object is the fluoro-rubber sealing gasket in the sealing structure of a certain underwater launch device, and its service life is predicted through accelerated degradation tests.
The launch power device is in a long-term storage state, and the sealing components, such as rubber sealing gaskets in its sealing structure, will age due to the comprehensive influence of various factors.
Experimental Principles Due to the unique polymer structure of rubber sealing gaskets, their performance inevitably deteriorates gradually.
Evolution of crosslinking structure in vulcanized natural rubber during thermal aging in the presence of a constant compressive stress [J].
Rubber Chemistry And Technology, 2005, 78(2): 355-390
The launch power device is in a long-term storage state, and the sealing components, such as rubber sealing gaskets in its sealing structure, will age due to the comprehensive influence of various factors.
Experimental Principles Due to the unique polymer structure of rubber sealing gaskets, their performance inevitably deteriorates gradually.
Evolution of crosslinking structure in vulcanized natural rubber during thermal aging in the presence of a constant compressive stress [J].
Rubber Chemistry And Technology, 2005, 78(2): 355-390
Online since: February 2011
Authors: Wei Wang, Jian Hua Ren, Jian Guo Ren
Caloric may destroy hydration structure, making chains close and increasing attraction.
If the shape and structure of Methyl Cellulose meet the above requirements, the deficiencies may be improved.
The process of increasing bulk density and granulation is a physical chemistry one, only under the condition of partial gel, the bulk density of the Methyl Cellulose may be increased effectually.
Structure factors of dissolution character about Cellulose Ethers.
Structure factors of dissolution character about Cellulose Ethers.
If the shape and structure of Methyl Cellulose meet the above requirements, the deficiencies may be improved.
The process of increasing bulk density and granulation is a physical chemistry one, only under the condition of partial gel, the bulk density of the Methyl Cellulose may be increased effectually.
Structure factors of dissolution character about Cellulose Ethers.
Structure factors of dissolution character about Cellulose Ethers.
Online since: June 2014
Authors: Khairun Azizi Azizli, Syed Ahmad Farhan, Muhd Fadhil Nuruddin, Azirul Zainal, Nadzhratul Husna Ahmad Puad
Roof insulation can block the flow of heat from direct sunlight into buildings through the roof structures.
It has beenreported that kapok fibres consist of a hollow structure with a thin fibre wall with a diameter of 16.5 ± 2.4 µm, a large lumen with a diameter of 14.5 ± 2.4 µm and a structure that is cylindrical and non-twisted[11-13].
Shi, Structure and performances of the kapok fibre, Journal of textile research, 26 (4) (2005) 4-6
Gaertn.)fibre: fibre structure, chemical characteristics, and application, Journal of Wood Sci, 46 (2000) 401-404
Radiation Physics and Chemistry, 78(7-8) (2009).513–515
It has beenreported that kapok fibres consist of a hollow structure with a thin fibre wall with a diameter of 16.5 ± 2.4 µm, a large lumen with a diameter of 14.5 ± 2.4 µm and a structure that is cylindrical and non-twisted[11-13].
Shi, Structure and performances of the kapok fibre, Journal of textile research, 26 (4) (2005) 4-6
Gaertn.)fibre: fibre structure, chemical characteristics, and application, Journal of Wood Sci, 46 (2000) 401-404
Radiation Physics and Chemistry, 78(7-8) (2009).513–515
Online since: June 2015
Authors: Oleg Prymak, Nikolai Baran, Stanislav Ishchenko, Valentyna Nosenko, Igor Vorona, Yuriy Prylutskyy, Nataliia Strutynska, Nikolai Slobodyanik, Anna Malyshenko, Igor Zatovsky
Lashkaryov Institute of Semiconductor Physics of NAS of Ukraine, Nauki prospect, 45, 03028 Kyiv, Ukraine
3 Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Universitaetsstrasse, 5-7, 45117 Essen, Germany
a anna-malyshenko@yandex.ru
Keywords: Apatite, nanoparticles, SEM, EPR, g-induced defects.
Sodium, Magnesium (from 0.5 to 1.0 % mas.) and less amount of Potassium (0.03–0.1% mas.) are the main substitutes of Calcium atoms in HAP structure [8,9].
In last case the MI-containing Calcium phosphates which belong to whitlockite structure type are obtained.
For investigation of influence of alkaline metal type on defects system in structure of obtained (MI, CO3)-containing Calcium phosphates, samples were investigated using EPR method.
During the thermal treatment above 400 °C there is a significant restructuring of the defect structure with the formation of number of other paramagnetic centers.
Sodium, Magnesium (from 0.5 to 1.0 % mas.) and less amount of Potassium (0.03–0.1% mas.) are the main substitutes of Calcium atoms in HAP structure [8,9].
In last case the MI-containing Calcium phosphates which belong to whitlockite structure type are obtained.
For investigation of influence of alkaline metal type on defects system in structure of obtained (MI, CO3)-containing Calcium phosphates, samples were investigated using EPR method.
During the thermal treatment above 400 °C there is a significant restructuring of the defect structure with the formation of number of other paramagnetic centers.
Online since: November 2018
Authors: Jörg Kärger, Rustem Valiullin
Schwieger, Hierarchically-structured porous materials: from basic understanding to applications, Chem Soc Rev 45 (2016) 3311–3312
Valiullin (Ed.), Diffusion NMR of Confined Systems, Royal Society of Chemistry, Cambridge, 2016
Zikanova, The analysis of the adsorption kinetics in materials with polydisperse pore structure, Ind.
Zolotarev, Kinetics of Physical Adsorption by Carbonaceous Adsorbents of Biporous Structure, Carbon 13 (1975) 193–200
, Chemistry International 38 (2015) 24.
Valiullin (Ed.), Diffusion NMR of Confined Systems, Royal Society of Chemistry, Cambridge, 2016
Zikanova, The analysis of the adsorption kinetics in materials with polydisperse pore structure, Ind.
Zolotarev, Kinetics of Physical Adsorption by Carbonaceous Adsorbents of Biporous Structure, Carbon 13 (1975) 193–200
, Chemistry International 38 (2015) 24.
Online since: January 2022
Authors: Elyor Berdimurodov, Abduvali Kholikov, Khamdam Akbarov, Lei Guo, Savaş Kaya, Dakeshwar Kumar Verma, Mohamed Rbaa, Omar Dagdag
The chemical structure is described in Fig. 1.
The molecular structure of the inhibitor IMD. 2.3.
Fig. 23 indicated the inhibitor IMD’s optimized molecular structure.
The inhibitor can be adsorbed on the metal surface by the adsorption sites of the optimised structure.
The inhibitor IMD’s optimized molecular structure. 3.8.2.
The molecular structure of the inhibitor IMD. 2.3.
Fig. 23 indicated the inhibitor IMD’s optimized molecular structure.
The inhibitor can be adsorbed on the metal surface by the adsorption sites of the optimised structure.
The inhibitor IMD’s optimized molecular structure. 3.8.2.