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Online since: October 2011
Authors: Xiang Yi Ding, Huai Dong Zhou, Yu Hui Wang, Yu Chun Wang
Data.
The land use data used in this study are from the Chinese Academy of Sciences.
uri=cn.csdb.soil, and the resolution of the data is 2km×2km.
The observed runoff data at hydrological stations are from 2006 to 2007, while the data at rainfall stations and meteorological stations are from 1961 to 2009.
Limited to the data available, the hydrological model is just validated using the observed runoff data of 2 years, although the validation results is good, more observed data including long series of runoff, evapotranspiration and groundwater table should be collected for more reasonable and comprehensive validation.
The land use data used in this study are from the Chinese Academy of Sciences.
uri=cn.csdb.soil, and the resolution of the data is 2km×2km.
The observed runoff data at hydrological stations are from 2006 to 2007, while the data at rainfall stations and meteorological stations are from 1961 to 2009.
Limited to the data available, the hydrological model is just validated using the observed runoff data of 2 years, although the validation results is good, more observed data including long series of runoff, evapotranspiration and groundwater table should be collected for more reasonable and comprehensive validation.
Online since: March 2013
Authors: Yu Gang Wang, Jia Ping Liu, Huang Xiang
Experimental study of a novel indirect evaporative cooler
Yugang Wang 1,2, a, Jiaping Liu1, Huang xiang3
1College of Environment Engineering & City Planning, Xi’an University
of Architecture and Technology, Xi’an, Shaanxi, 710055, china
2College of Mechanical Engineering, Jimei University, Xiamen, Fujian, 361021, china
3College of Environmental & Chemical Engineering,
Xi’an Polytechnic University, Xi’an, Shaanxi, 710048, china
ayugang0312@yahoo.com.cn
Keywords: Dew Point Indirect Evaporative Cooling; Performance Testing; Data Analysis
Abstract.
Set up a test-bed, test the pre-cooling section, cooling section, and the units consist of them separately, then analysis the data.
From the Fig. 3, it can be obtained that with the reduction of the primary air volume, the air volume ratio of secondary / primary air is increasing, the heat transfer efficiency first increased and then decreased.
Set up a test-bed, test the pre-cooling section, cooling section, and the units consist of them separately, then analysis the data.
From the Fig. 3, it can be obtained that with the reduction of the primary air volume, the air volume ratio of secondary / primary air is increasing, the heat transfer efficiency first increased and then decreased.
Online since: March 2007
Authors: Richard J. Day, Leon W. Davies, David Bond, Alan Nesbitt, John Ellis, Emilie Gardon
QuickstepTM is a novel
polymer composite manufacturing technique designed for the out-of-autoclave processing of highquality,
low-cost components with a reduction in cure-cycle times.
Using Quickstep curing it has been found that better interlaminar properties than the manufacturers autoclave data could be obtained while the flexural strength was a little lower.
The high pressure environment of the autoclave facilitates the dissolution and removal of voids present in the part which when present can have detrimental effects on the mechanical properties of finished composite parts, manifested by a reduction in structural strength [2, 3] and fracture toughness [4].
Additionally, an 82% reduction in tooling and operating costs was achieved.
Using Quickstep curing it has been found that better interlaminar properties than the manufacturers autoclave data could be obtained while the flexural strength was a little lower.
The high pressure environment of the autoclave facilitates the dissolution and removal of voids present in the part which when present can have detrimental effects on the mechanical properties of finished composite parts, manifested by a reduction in structural strength [2, 3] and fracture toughness [4].
Additionally, an 82% reduction in tooling and operating costs was achieved.
Online since: July 2014
Authors: Ying Tong, Liang Bao Jiao, Xue Hong Cao
Compared with traditional HOG and the improved PHOG, the proposed SMS_HOG algorithm acquires 5% recognition rate improvement and 50% processing time reduction.
Method “L-O-Sap-O” is able to select every image’s data as sample to make sure every image’s features are considered, contributing to a better reality.
Maybe the cause is that background edge information will take more effect and leads to the reduction of recognition rate.
The origin of the classification time reduction is from the smaller feature dimension.
Compared with traditional HOG and the improved PHOG, the SMS_HOG acquires 5% recognition rate improvement and 50% processing time reduction.
Method “L-O-Sap-O” is able to select every image’s data as sample to make sure every image’s features are considered, contributing to a better reality.
Maybe the cause is that background edge information will take more effect and leads to the reduction of recognition rate.
The origin of the classification time reduction is from the smaller feature dimension.
Compared with traditional HOG and the improved PHOG, the SMS_HOG acquires 5% recognition rate improvement and 50% processing time reduction.
Online since: July 2011
Authors: Si Yu Wang, Li Guang Xiao, Qiang Zhou, Kai Xu, Bao Li Chen, Ji Feng Wang, Zhi Zhong Wu
With the continuous development of industry industrial waste increase day by day, according to data reported [1], in 1995 a variety of industrial wastes in China was 7.4 billion tons and the stockpiled aggregate amounted to 6.5 billion tons, land occupation was 5 to 6 million hectares.
Magnesium Slag Composition Analysis Magnesium slag is produced by discharges of industrial wastes when manufacturing magnesium metal, magnesium slag production process is like this [2-4]: the production method of magnesium is classified into electrolysis, thermal reduction of silicon, carbon thermal reduction, carbon reduction.
Silicon thermal reduction method could be divided into Italy Pidgeon's reduction method and France semi-continuous silicon thermal method, the major method used in China is the Pidgeon's reduction method which belongs to silicon thermal method.
Dolomite mineral structure of Silicon Thermal reduction of magnesium [MS Thesis].
Magnesia vacuum carbothermal reduction method [MS Thesis].
Magnesium Slag Composition Analysis Magnesium slag is produced by discharges of industrial wastes when manufacturing magnesium metal, magnesium slag production process is like this [2-4]: the production method of magnesium is classified into electrolysis, thermal reduction of silicon, carbon thermal reduction, carbon reduction.
Silicon thermal reduction method could be divided into Italy Pidgeon's reduction method and France semi-continuous silicon thermal method, the major method used in China is the Pidgeon's reduction method which belongs to silicon thermal method.
Dolomite mineral structure of Silicon Thermal reduction of magnesium [MS Thesis].
Magnesia vacuum carbothermal reduction method [MS Thesis].
Online since: October 2014
Authors: Jacek Selejdak, Kamil Dubała
The obtained data allows estimating the range of destruction of the structure of material by insects and fungi as well as describing the “healthy” cross-section of the element, which is taken to be checked in the static-strength calculations.
In percentage reduction of specific gravity of the damaged part sample to the specific gravity of the healthy part, we calculate the norm of strength of the wood on the basis of Table 3.
Relation of the reduction of strength of wood to reduction of specific gravity.
Reduction of specific gravity of the wood [%] Reduction of the strength of wood [%] Reduction coefficients 1 5 – 6 0.95 10 30 0.70 20 40 0.60 30 – 38 100 - Indirect values from the table should be interpolated linearly.
The methods presented in the article considering cracks, impact of fungi and insects and humidity of the wood allows to estimate the reduction of strength of wooden elements essential to make static-strength calculations of the repaired object.
In percentage reduction of specific gravity of the damaged part sample to the specific gravity of the healthy part, we calculate the norm of strength of the wood on the basis of Table 3.
Relation of the reduction of strength of wood to reduction of specific gravity.
Reduction of specific gravity of the wood [%] Reduction of the strength of wood [%] Reduction coefficients 1 5 – 6 0.95 10 30 0.70 20 40 0.60 30 – 38 100 - Indirect values from the table should be interpolated linearly.
The methods presented in the article considering cracks, impact of fungi and insects and humidity of the wood allows to estimate the reduction of strength of wooden elements essential to make static-strength calculations of the repaired object.
Online since: July 2006
Authors: John Campbell, Murat Tiryakioğlu
Mechanical properties as a
function of DAS measured
experimentally for an Al-7Si-0.4Mg
alloy [12] and for Al-3Mg alloy
predicted here from data by [6].
The widely observed reduction of mechanical properties [3,12] with increased DAS (Fig. 3) has been generally assumed to be a kind of Hall-Petch effect.
The Gumbel probability plots [15] showing that the sizes of largest defects increase with (a) increased hydrogen content (data from Ref. 18), and (b) SDAS (data from Ref. 19).
(The simultaneous reduction of DAS is a side effect usually misinterpreted as a cause). 4.
This can lead to the reduction of disturbances due to convection effects, and thus lead to the growth of large grains.
The widely observed reduction of mechanical properties [3,12] with increased DAS (Fig. 3) has been generally assumed to be a kind of Hall-Petch effect.
The Gumbel probability plots [15] showing that the sizes of largest defects increase with (a) increased hydrogen content (data from Ref. 18), and (b) SDAS (data from Ref. 19).
(The simultaneous reduction of DAS is a side effect usually misinterpreted as a cause). 4.
This can lead to the reduction of disturbances due to convection effects, and thus lead to the growth of large grains.
Online since: October 2014
Authors: S. Licoccia, A. d’Epifanio, Elisabetta di Bartolomeo, Francesca Zurlo, Valeria Felice, Isabella Natali Sora
LSFCu/LSGM/LSFCu symmetrical cells were prepared and Area Specific Resistance (ASR) values, directly depending on the rate limiting step of the oxygen reduction reaction, were evaluated.
These features may be explained with the occurrence of cations interdiffusion between LSGM and LSFCu causing the formation of a solid solution with a consequent reduction of the cell volume.
A performing cathode, apart from having very good activity for oxygen reduction, should be stable in oxidizing environment and have a high electronic conductivity (>100 S·cm-1).
The measured data were plotted in the complex plane and fitted to an equivalent circuit from which the ASR values reported in Fig. 3 c) were deduced.
Data show no substantial difference between the two materials being, for instance, 0.25 Ω·cm2 vs 0.31 Ω·cm2 at 750 °C for LSFCu and LSFCo, respectively.
These features may be explained with the occurrence of cations interdiffusion between LSGM and LSFCu causing the formation of a solid solution with a consequent reduction of the cell volume.
A performing cathode, apart from having very good activity for oxygen reduction, should be stable in oxidizing environment and have a high electronic conductivity (>100 S·cm-1).
The measured data were plotted in the complex plane and fitted to an equivalent circuit from which the ASR values reported in Fig. 3 c) were deduced.
Data show no substantial difference between the two materials being, for instance, 0.25 Ω·cm2 vs 0.31 Ω·cm2 at 750 °C for LSFCu and LSFCo, respectively.
Online since: April 2012
Authors: Ming Ge Zhou, Wei Li, Ming Gang Zhu, Dong Zhou, Yang Long Hou
In this work, the core-shell FePt@Fe3O4 nanowires and nanoparticles as a new hard-soft composite magnetic materials were synthetized by reduction of platinum acetyl acetonate and iron pentacarbonyl together in the presence of oleic acid and oleyl amine stabilizers by polyol process.
Such composite magnetic systems has become an important goal in developing nanocrystal materials for potential applications ranging from catalysis[17], data storage, and high-frequency materials[18] to advanced permanent magnets[8].
Experimental In our recent work, synthesis of FePt core with Fe3O4 shell were completed in One pot, firstly,the 100nm or longer FePt wires were made by the combination of reduction of Pt(acac)2 and decomposition of Fe(CO)5 as sources of Fe and Pt[12,13].
It indicate the core/shell nanostructure with special performance not only has potential applications in data storage, but also has widely used in, high-frequency inductors, reactors and so on[15,16] 4.
Conclusions In conclusion, we report that controlled reduction of [Pt(acac)2] and decomposition of [Fe(CO)5] in a mixture of oleylamine and octadecene leads to a facile synthesis of FePt@Fe3O4 core/shell nanostructure in one pot.with this method, the Fe3O4 shell were achieved by addition of excess of Fe(CO)5 and air oxidation.The shape anisotropic FePt@Fe3O4 nanowires are likely the future choice for controlling texture and magnetic alignment in self-assembled nanomagnet arrays to support support high-density magnetic information and as building blocks for fabricating highly sensitive magnetotransport devices.The synthesis can also be extended to the preparation of other magnetic materials and hybrid multicomponent systems[19,20].With proper choice of materials and dimension tuning of both core and shell, these core/shell nanoparticles may be used as building blocks for creation of novel functional nanomaterials for various magnetic applications.
Such composite magnetic systems has become an important goal in developing nanocrystal materials for potential applications ranging from catalysis[17], data storage, and high-frequency materials[18] to advanced permanent magnets[8].
Experimental In our recent work, synthesis of FePt core with Fe3O4 shell were completed in One pot, firstly,the 100nm or longer FePt wires were made by the combination of reduction of Pt(acac)2 and decomposition of Fe(CO)5 as sources of Fe and Pt[12,13].
It indicate the core/shell nanostructure with special performance not only has potential applications in data storage, but also has widely used in, high-frequency inductors, reactors and so on[15,16] 4.
Conclusions In conclusion, we report that controlled reduction of [Pt(acac)2] and decomposition of [Fe(CO)5] in a mixture of oleylamine and octadecene leads to a facile synthesis of FePt@Fe3O4 core/shell nanostructure in one pot.with this method, the Fe3O4 shell were achieved by addition of excess of Fe(CO)5 and air oxidation.The shape anisotropic FePt@Fe3O4 nanowires are likely the future choice for controlling texture and magnetic alignment in self-assembled nanomagnet arrays to support support high-density magnetic information and as building blocks for fabricating highly sensitive magnetotransport devices.The synthesis can also be extended to the preparation of other magnetic materials and hybrid multicomponent systems[19,20].With proper choice of materials and dimension tuning of both core and shell, these core/shell nanoparticles may be used as building blocks for creation of novel functional nanomaterials for various magnetic applications.
Online since: January 2012
Authors: Gui Yun Wang, Ling Chao Lu, Shou De Wang
Results show that with the increasing of shell content, the compressive strength decreases, however, modest reduction; as the increase of CaCO3 content, the strength first increases and then decreases, the compressive strength reaches the highest value when the content is 15%.
As shown in Table 2, with the increasing of shell content, the compressive strength decreased, however, modest reduction.
However, when the shell was added into the cement, the content of Ca(OH)2 was not increased, this was consistent with the hydration heat and the data in Table 2.
Mehta who is from University of California divided pore diameter of hardened cement paste into 4 grades [6], the data is shown in Table 5.
With the increasing of shell content, the compressive strength decreases, however, modest reduction; as the increase of CaCO3 content, the strength first increases and then decreases, the compressive strength reaches highest when the content is 15%. 2.
As shown in Table 2, with the increasing of shell content, the compressive strength decreased, however, modest reduction.
However, when the shell was added into the cement, the content of Ca(OH)2 was not increased, this was consistent with the hydration heat and the data in Table 2.
Mehta who is from University of California divided pore diameter of hardened cement paste into 4 grades [6], the data is shown in Table 5.
With the increasing of shell content, the compressive strength decreases, however, modest reduction; as the increase of CaCO3 content, the strength first increases and then decreases, the compressive strength reaches highest when the content is 15%. 2.