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Online since: September 2010
Authors: X. Miao, Ross Crawford, G. Liu, W. Fan, Yin Xiao
Polymer microspheres loaded with bioactive particles, biomolecules, proteins, and/or
growth factors play important roles in tissue engineering, drug delivery, and cell therapy.
The microstructures of microspheres control their properties, including; chemical (e.g.
Thus how to join the microspheres to achieve a porous structure with good mechanical properties and without damaging the protein is an important issue.
However, the loading and the release of the growth factors of the microspheres should be investigated in the follow-up study.
The encapsulation efficiency was ~93.8 %, which would be significant for saving the expensive growth factors.
The microstructures of microspheres control their properties, including; chemical (e.g.
Thus how to join the microspheres to achieve a porous structure with good mechanical properties and without damaging the protein is an important issue.
However, the loading and the release of the growth factors of the microspheres should be investigated in the follow-up study.
The encapsulation efficiency was ~93.8 %, which would be significant for saving the expensive growth factors.
Online since: August 2014
Authors: Bob B. He
The solid curves represents 2q shift based on isotropic elasticity and the dotted curves are based on anisotropic factor ARX=1.49 [4].
The pole density at (a,b) is proportional to the integrated intensity at the same angles [4]: (4) where is the 2q-integrated intensity of the (hkl) peak corresponding to the pole direction , is the scaling factor covering the absorption, polarization, background corrections and various instrument factors if these factors are included in the integrated intensities, and is the pole density distribution function.
Pole density mapping from g profile to pole-figure Crystal size The size of the crystallites in a polycrystalline material has significant effects on many of its properties, such as thermal, mechanical, electrical, magnetic and chemical properties.
The scaling factor , in which b is the divergence of the incident X-ray beam.
In transmission mode with the incident beam perpendicular to the sample surface, the linear absorption coefficient affects the relative scattering intensity (counting statistics), but not the actual sampling volume.
The pole density at (a,b) is proportional to the integrated intensity at the same angles [4]: (4) where is the 2q-integrated intensity of the (hkl) peak corresponding to the pole direction , is the scaling factor covering the absorption, polarization, background corrections and various instrument factors if these factors are included in the integrated intensities, and is the pole density distribution function.
Pole density mapping from g profile to pole-figure Crystal size The size of the crystallites in a polycrystalline material has significant effects on many of its properties, such as thermal, mechanical, electrical, magnetic and chemical properties.
The scaling factor , in which b is the divergence of the incident X-ray beam.
In transmission mode with the incident beam perpendicular to the sample surface, the linear absorption coefficient affects the relative scattering intensity (counting statistics), but not the actual sampling volume.
Online since: March 2024
Authors: Alemu Gurmessa Gindaba, Sampandam Elangovan, Menberu Mengesha Woldemariam, Senbeto Kena Etana
Our findings reveal that the solid GaAs surface tends to capture electrons under the influences of external magnetic fields and pressure thus binding electrons and putting additional confining potential meanwhile the surface properties are affected.
We employed computational methods used for the two-dimensional materials and presents how the materials' properties change with dimensionality.
Haik, Magnetic nanoparticles: surface effects and properties related to biomedicine applications, Int J Mol Sci. 14 (2013) 21266–21305
Dong, Microstructure and magnetic properties of FeCoHfN thin films deposited by DC reactive sputtering, J Magn Magn Mater. 547(2022) 168777
Suzuki, Soft magnetic and structural properties of (FeCo)–(AlSi) alloy thin films, J Magn Magn Mater. 507(2020)166852
We employed computational methods used for the two-dimensional materials and presents how the materials' properties change with dimensionality.
Haik, Magnetic nanoparticles: surface effects and properties related to biomedicine applications, Int J Mol Sci. 14 (2013) 21266–21305
Dong, Microstructure and magnetic properties of FeCoHfN thin films deposited by DC reactive sputtering, J Magn Magn Mater. 547(2022) 168777
Suzuki, Soft magnetic and structural properties of (FeCo)–(AlSi) alloy thin films, J Magn Magn Mater. 507(2020)166852
Online since: June 2014
Authors: Ubaidillah Ubaidillah, Zainal Arifin, Suyitno Suyitno, Tara Setyaji Argatya, Arif Santoso Ahmad
Sutami 36 A Surakarta, Indonesia
3Graduate School of Mechanical Engineering, Brawijaya University, Jl.
The main factors greatly influencing to the quality of FTO are the forming process of droplet and the heating process [4].
The efficiency of the DSC was determined from the Voc, Jsc, and calculated fill factor (FF) values, as determined from I–V curves.
Sakthivel, Effect of solvent volume on the physical properties of undoped and fluorine doped tin oxide films deposited using a low-cost spray technique, Superlattices Microstruct. 50 (2011) 722-733
Bhosale, Electrical, structural and optical properties of SnO2:F thin films: Effect of the substrate temperature, J.
The main factors greatly influencing to the quality of FTO are the forming process of droplet and the heating process [4].
The efficiency of the DSC was determined from the Voc, Jsc, and calculated fill factor (FF) values, as determined from I–V curves.
Sakthivel, Effect of solvent volume on the physical properties of undoped and fluorine doped tin oxide films deposited using a low-cost spray technique, Superlattices Microstruct. 50 (2011) 722-733
Bhosale, Electrical, structural and optical properties of SnO2:F thin films: Effect of the substrate temperature, J.
Online since: October 2011
Authors: Su Fen Huang, Zhi Gang Song, Bin Li
Experimental design method affects the result of response surface analysis.
In case of fire, the material properties of structure such as strength, elastic modulus, Poisson ratio, expansion rate will change at elevated temperature, which make the structure produces non-negligible internal thermal stress.
The example considers seven factors, the involved random parameters are presented in Tab 1, where is combustion efficiency factor, is smoke radiation coefficient, is fire growth factor,is net heat of combustion, is characteristic hear release rate in unit area, is fire load density, is the height of fire source.
Firstly using Matlab fits the highest temperature (T) and the fire duration (t) of seven factors with a linear function based on the data in Tab.2, the result is expressed as follow: The T and t follow normal distribution as the nature of normal distribution of the seven factors.
[6] Bo Wu: The Mechanical Properties of Fired Reinforced Concrete Structures.
In case of fire, the material properties of structure such as strength, elastic modulus, Poisson ratio, expansion rate will change at elevated temperature, which make the structure produces non-negligible internal thermal stress.
The example considers seven factors, the involved random parameters are presented in Tab 1, where is combustion efficiency factor, is smoke radiation coefficient, is fire growth factor,is net heat of combustion, is characteristic hear release rate in unit area, is fire load density, is the height of fire source.
Firstly using Matlab fits the highest temperature (T) and the fire duration (t) of seven factors with a linear function based on the data in Tab.2, the result is expressed as follow: The T and t follow normal distribution as the nature of normal distribution of the seven factors.
[6] Bo Wu: The Mechanical Properties of Fired Reinforced Concrete Structures.
Online since: April 2006
Authors: Lei Ren, Akiyoshi Osaka, Wei Shi, Qi Qing Zhang, Song Chen, B. Yu, Dong Tao Ge
Introduction
The expanding field of tissue engineering applications has accelerated the need of materials
which are tissue compatible, biodegradable and with mechanical properties similar to the target
tissues [1].
Performance of these properties demands usually a porous scaffold structure, with the porosity characteristics being application specific.
Since they are porous, the scaffolds may incorporate some additives such as drugs, growth factors that have certain effects on cell growth, cell differentiation, and anti-inflammatory.
Freezing temperature affected the pore size and porosity (total and open) as illustrated in Fig. 1.
The pH value of the soaking solutions also affected the pore size and pore volumes of the hybrids.
Performance of these properties demands usually a porous scaffold structure, with the porosity characteristics being application specific.
Since they are porous, the scaffolds may incorporate some additives such as drugs, growth factors that have certain effects on cell growth, cell differentiation, and anti-inflammatory.
Freezing temperature affected the pore size and porosity (total and open) as illustrated in Fig. 1.
The pH value of the soaking solutions also affected the pore size and pore volumes of the hybrids.
Online since: August 2013
Authors: Song Wang, Guo Jun Su, Li Zhang
Intelligence Predictive Control Study on Lime Rotary Kiln Temperature
Zhang Li1,a, Wang Song1,band Su Guojun2,c
1School of Mechanical, Electrical and Information Engineering, Shandong University at Weihai, Weihai,264209
2School of Automation and Electrical Engineering, Tianjin University of Technology and Education, Tianjin,300222
aneuzhangli@163.com; b wszbs3@sdu.edu.cn; c guojunsu@163.com
Keywords: Rotary kiln, Neural network, Predictive control, Temperature
Abstract.
Among them, neural networks are well known and popular due to their global approximation property.
So the control index in this paper is to control the double color temperature in 1300 ℃.Many factors affect the temperature, include gas flow, gas pressure, gas composition, wind speed, et al.
Its principle is shown in Fig4.Multi-step prediction can be represented by the following formula: (1) Rolling optimization performance index as follows: (2) Where, , A N N A N N A N N A N N y(k) y(k-n+1) u(k-d+1) u(k-d-m+1) y(k+1) y(k-n+2) u(k-d+2) u(k-d+m+2) y(k+2) y(k-n+3) u(k-d+3) u(k-d-m+3) y(k+d) y(k+d-n) u(k) u(k-m) y(k+d-1) Fig4 Multi-step predictive iterative principle diagram In this formula (k+i) is replaced by the output after feedback correction, is control weighting factor, which is used to restrict acute change of u.
So, we can get the control u as follows: (3) Line Search Scheme is always used to solve unconstrained optimization problems, the key problem is formed search direction dk and find fixed long factor ak.We always make it satisfied (gk=).
Among them, neural networks are well known and popular due to their global approximation property.
So the control index in this paper is to control the double color temperature in 1300 ℃.Many factors affect the temperature, include gas flow, gas pressure, gas composition, wind speed, et al.
Its principle is shown in Fig4.Multi-step prediction can be represented by the following formula: (1) Rolling optimization performance index as follows: (2) Where, , A N N A N N A N N A N N y(k) y(k-n+1) u(k-d+1) u(k-d-m+1) y(k+1) y(k-n+2) u(k-d+2) u(k-d+m+2) y(k+2) y(k-n+3) u(k-d+3) u(k-d-m+3) y(k+d) y(k+d-n) u(k) u(k-m) y(k+d-1) Fig4 Multi-step predictive iterative principle diagram In this formula (k+i) is replaced by the output after feedback correction, is control weighting factor, which is used to restrict acute change of u.
So, we can get the control u as follows: (3) Line Search Scheme is always used to solve unconstrained optimization problems, the key problem is formed search direction dk and find fixed long factor ak.We always make it satisfied (gk=).
Online since: January 2018
Authors: C.C. Santos, F.C. Cuzinsky, L.C. Witsmiszyn, Luiz Oliveira Veriano dalla Valentina
A huge quantity of this foundry sand is disposed in landfills causing severe environmental impacts, affecting the lives of the people who surround the landfills [7].
The experimental method was used to determine the materials characteristic and the technical properties of the interlocking concrete paving blocks [fig.1].
The characterization methods analyzed the physical and mechanical properties of the blocks.
Such property characterizations were essential to determine the behavior and the performance of these blocks following the Brazilian standard NBR 9781 [1].
The workability property in fresh state is limited due to the powdery material characteristic of the blocks.
The experimental method was used to determine the materials characteristic and the technical properties of the interlocking concrete paving blocks [fig.1].
The characterization methods analyzed the physical and mechanical properties of the blocks.
Such property characterizations were essential to determine the behavior and the performance of these blocks following the Brazilian standard NBR 9781 [1].
The workability property in fresh state is limited due to the powdery material characteristic of the blocks.
Online since: December 2013
Authors: Lei Li, Yuan Min Ni
In the paper, aimed at the running properties of garbage incinerator and combined the mechanism of garbage combustion and contamination generation, it studied the characteristic of controlled combustion process, proposed a sort of fusion control strategy based on human simulated intelligence for controlled process, constructed the corresponding control algorithm.
It is threatening the people's survival environment, and seriously affects the people's physical and mental health and quality of life.
From the above, it can be seen that the key factor of prevention and control for secondary pollution is how to make the treatment of combustion exhaust gas.
The factors of determining the combustion quality mainly are the garbage combustion temperature, residence time of garbage and the high temperature exhaust gas in the incinerator, and the swirl injection of secondary air and mixing of exhaust gas to complete combustion, namely the turbulivity and so on.
The control factors of the incinerator combustion include that ① The temperature, pressure of superheated steam and the water level of steam drum, ② Feeder and the speed of the fire grate, ③ Control of exhaust gas at 850℃ and 2 seconds time stayed, ④ Negative pressure control of combustion chamber, ⑤ Control of the coal economizer outlet temperature, ⑥ Control of the oxygen content in exhaust gas.
It is threatening the people's survival environment, and seriously affects the people's physical and mental health and quality of life.
From the above, it can be seen that the key factor of prevention and control for secondary pollution is how to make the treatment of combustion exhaust gas.
The factors of determining the combustion quality mainly are the garbage combustion temperature, residence time of garbage and the high temperature exhaust gas in the incinerator, and the swirl injection of secondary air and mixing of exhaust gas to complete combustion, namely the turbulivity and so on.
The control factors of the incinerator combustion include that ① The temperature, pressure of superheated steam and the water level of steam drum, ② Feeder and the speed of the fire grate, ③ Control of exhaust gas at 850℃ and 2 seconds time stayed, ④ Negative pressure control of combustion chamber, ⑤ Control of the coal economizer outlet temperature, ⑥ Control of the oxygen content in exhaust gas.
Online since: September 2019
Authors: Yury Borodin, Anastasia Mantina
Introduction
With the development of near-surface materials science a basically now method of modification of structure and properties of crystals, ceramics and films appeared.
Ordered quantum well structures also occur at low-angular twist boundaries and packing defects [1–3]; besides, proton modification, interaction modulation of H–M and H–H [2, 4], isotope ordering [5, 6] and other factors promote to their formation.
The growth of material strength properties [7, 8], realization of nonlinear optical affects [9, 10] and two-dimensional holographic recording of information [11] have been achieved.
At the same time there is a real possibility of considering physical laws and laws of conservation in elliptical sрасe on Clifford surface in the same way as on Euclidean surface due to the unique properties of Clifford surface.
All of them can serve as an instrument for studying geometric properties of systems with disordered centres and their local environment.
Ordered quantum well structures also occur at low-angular twist boundaries and packing defects [1–3]; besides, proton modification, interaction modulation of H–M and H–H [2, 4], isotope ordering [5, 6] and other factors promote to their formation.
The growth of material strength properties [7, 8], realization of nonlinear optical affects [9, 10] and two-dimensional holographic recording of information [11] have been achieved.
At the same time there is a real possibility of considering physical laws and laws of conservation in elliptical sрасe on Clifford surface in the same way as on Euclidean surface due to the unique properties of Clifford surface.
All of them can serve as an instrument for studying geometric properties of systems with disordered centres and their local environment.