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Online since: November 2013
Authors: Violeta Popescu, Marioara Moldovan, Ioana Perhaiţa, Doina Prodan, Cristina Prejmerean, Laura Silaghi-Dumitrescu, Stanca Boboia, Violeta Pascalau, Andreia Molea, Lazar Diana
From the FTIR spectra of HA-Zn (Fig.1.) it can be observed the presence of a small number of the absorption bands.
The most intense band in the apatites FTIR spectra is the band attributed to the stretching vibrations of P-O bonds in phosphate group (PO) in the area of 1000-1100 cm-1 wave number.
This band is accompanied by a secondary band due to the bending vibrations in the area of 500-600 cm-1 wave number.
SEM micrographs of the HA-Zn sample, at 100 °C, 300°C, 500°C 800°C, and 1000°C (x15 000) Brunauer, Emmett, Teller analysis (BET) The specific surface area of the powder is closely related to the size of the powder grains.
Preliminary results to determination of the effective atomic number
Online since: December 2012
Authors: Wei Hai Yuan, Hua Mei Xu, Yue Feng Yuan, Fang Zhou Zhu
The Research of LED Lights Model Based on Road Lighting in Mesopic Vision Fangzhou Zhu *1, a, Weihai Yuan1,b , Huamei Xu 2,c and Yuefeng Yuan1,d 1Anhui Economic Management Cadres Institute, China 2 Anhui Vocational College of Grain Engineering, China afangzhou_zhu@126.com, byuanweihai@sina.com, cxuhuameimei@126.com, dyf.yuan@163.com Keywords: LED, the white and green LED, human visual characteristics, Mesopic vision.
The road lighting high pressure sodium and metal halide lamps, and many scholars in the middle of the visual state of high pressure sodium, metal halide light efficiency, a number of outputs [5].
The feelings of the human eye on the overall intensity of the LED light source can be sensitive visual intensity of each color cell integrated into a synthesis of the impulse to pass into the brain, its LED light source with the optical model shown in Fig.4: Fig. 4 LED light distribution model Fig.4 can be seen R, G and B present three primary colors of red, green and blue intensity of stimulation, M said that the human eye cone cell sensitivity coefficient, T1, T2, T3, pyramidal cells of the human eye on the three primary colors corresponding sensitivity, log used to simulate the human visual pyramidal cells in the visual response curve to match the sensitivity to take on the number of log operations, N said that the human eye rod cell sensitivity coefficient, C1,, C2, C3, respectively, the contrast in black and white, red and green contrast, yellow-blue contrast, , , are filtering function, Y is the brightness, B1and B2 are Chroma.
When the white and green LED is used for road lighting, it ensures the safety of a large number in energy saving.
Acknowledgements The young talents Fund project of Anhui province in 2010( Number: 2010SQRL206).
Online since: May 2014
Authors: Guillaume Rückert, Myriam Chargy, François Jorez, François Cortial
Studies [3,4] have demonstrated the importance of this process in low alloy steels for a thickness of about 6 to 12 mm, for the grain refinement in Heat Affected Zone (HAZ), an enhancement of the metallurgical weldability with regard to arc welding processes, and producing no welding fumes particularly containing hexavalent chromium.
DebRoy, Review: friction stir welding tools, Science and Technology of Welding and Joining, Volume 16, Number 4 pp. 325-342, February 2011 [2] K.J.
Grimmett, R.W Warke, Friction Stir Welding Studies on Mild Steel, Welding Journal, Volume 82, Number 1, pp1s-9s, January 2003 [4] T.
Steel, Friction Stir Process Now Welds Steel Pipe, Welding Journal, Volume 88, Number 5, pp. 44-48, May 2009 [6] C.
Hattel, Numerical optimisation of friction stir welding: review of future challenges, Science and Technology of Welding and Joining, Volume 16, Number 4, p. 318, 2011 [7] Bureau Veritas NR 216 DT R06 E, Rules on Materials and Welding for the Classification of Marine Units, edited by Bureau Veritas, Feb. 2013 [8] EN 10025-6 standard, Hot rolled products of structural steels - Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance, edited by AFNOR, 2004 [9] ISO 15614-1 standard, Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys, edited by AFNOR, 2004
Online since: February 2020
Authors: Archana Mallik, Azmeera Srinivasanaik, Amlan Das
TEM Morphology of (a) 1M-FLGNSs and (b) 2M-FLGNSs The SEM micrograph in figure 6 (a) shows a less porous and planar mosaic layer stacking arrangement of graphite grains for the graphite sheet.
Figure 7 (a) depicts TEM images wherein 1M FLGNSs display peeling of bigger GNSs domain with a large number of layers and low transparency due to the overlapping of many layers.
Figure 7 (b) displays 2M FLGNSs herein the thinness and better transparency in the GNSs is observed due to less number of graphene layers.
Scanning probe microscopy analysis Scanning probe microscopy is a superior tool for a better comprehension of lateral dimensions, number of layers and functionalization.
AFM and STM provide idea about the thickness and number of layers.
Online since: December 2012
Authors: Zhao Zheng Song, Qing Zhe Jiang, Yan Ming Xu, Wen Ju Xin, Dong Rui He, Qian Qian Song
Energy consumption in a large number of high-energy consuming industries, such as Steel industry, building materials, chemical industries, etc. in China [5], turns out to be major sources of CO2 emission in the atmosphere.
It is predicted that in 2020 the total amount of bio-energy raw materials will reach up to about 2.1 billion tons (equivalent to coal formation about 1.5 billion tons), showing a huge number of biomass energy resources in China with a broad space for development.
It is predicted that the total number of our national bio-energy raw materials in 2020 will be about 2.1 billion tons that is equivalent to about 1.5 billion tons of coal.
Now, policies of developing non-grain materials to produce ethanol are encouraged, such as the biofuel production technology of taking straw, wood, grass and other agricultural and forestry wastes as the raw materials rather than food.
What’s more, biodiesel does not contain aromatic alkanes polluting environment with lower damage to the human’s body than diesel and has high cetane number and excellent combustion properties.
Online since: January 2015
Authors: Milena Zolotareva
Petersburg as of 1820-s represent a search for the balance between an increase in the number of facilities managed by the city and the opportunity to grow the city budget by partially delegating the state functions to the city society on taxes for accumulating the funds, needed to maintain the property.
The work was carried out by a number of commissions and committees, organized to help the Ministry for internal Affairs.
The number of tax payers increases, as the owners of summer residences and territories near the city now belong to this group.
In 1840s the following loans were available: redesign of the City Duma building, reconstruction of storage facilities (used for multiple purposes), construction of military barracks and a grain pier, works on the banks of Neva and Obvodnyi canal, layout of streets etc.
Summary The increase in the number the real estate facilities belonging to the city, works on provision of urban amenities and facility maintenance became possible, because the revenues received by the city represented on forth of all city revenues in the country.
Online since: June 2022
Authors: Hans Aoyang Zhou, Florian Brillowski, Christoph Greb, Daniel Lütticke
With n describing the number of data points and y, y and y are the real, mean and predicted fiber orientation.
All models are trained with the following hyperparameters: momentum 0.99, batch size 32, and the number of epochs 200.
ResNet-18 has shown high performance with a moderate number of weight parameters and is thus efficient for training on small datasets.
Vedaldi, Fine-Grained Visual Classification of Aircraft, 2013
Zisserman, Automated Flower Classification over a Large Number of Classes, in: 2008 Sixth Indian Conference on Computer Vision, Graphics & Image Processing, 2008, pp. 722–729
Online since: November 2022
Authors: Toshio Haga
It is presumed that the semisolid metal with a low solid fraction increased the number of globular crystals.
The dendrites shown by arrows A separated from the solidification layer as the grain boundaries were re-melted by the latent heat released from the semisolid metal at the center.
The thickness of the zone of globular crystals indicated by arrow Z decreased and the number of the fine globular crystal decreased as the pouring temperature of the molten metal decreased.
If this is true, the quantity of globular crystals increases when a semisolid slurry or low-temperature molten metal is poured, as the quantity of re-melted globular crystals formed on the roll at the tip of the back dam plate decreases and the number of newly formed crystals increases.
The number of dividing dendrites in Fig. 3(b) is fewer than that in Fig. 3(a).
Online since: January 2010
Authors: Wen Sheng Zhang, Hong Fu Chen, Ming Sheng Wang
In 2008, the reduction of rice in the world's major grain-producing countries led to sharp drop in their exports of agricultural products, which resulted in skyrocketing food prices, violence and even bloodshed in some areas of food-importing countries.
The forecast model of agricultural and livestock products price In fact, a phenomenon is often associated with a number of factors, and it is more effective and realistic to predict or estimate a common dependent variable by a number of the optimal combination of independent variables rather than just one variable.
A number of these factors are used as explanatory variables, and forecasted prices will be interpreted as variables, price forecasts multivariate linear regression equation is constructed. 1121 ii YQQX QX = +++ A
A number of these factors are used as explanatory variables, and forecasted prices will be interpreted as variables, price forecast multivariate linear regression equation is constructed. 2121 ij j YPPX PX + = +++ A
Online since: May 2020
Authors: V.V. Kerimova, Lyudmila V. Klimova, Anna V. Ryabova
Evaluation of spreading frits Composition number The set of frit [mm] 1 43,5 2 26,3 3 23,1 4 26,3 5 frit melted, but did not spread 6 frit melted, but did not spread 7 23,1 8 26,3 9 43,5 10 43,5 11 38,3 12 38,1 13 26,3 14 23,1 15 26,3 As a result of the study, it has been established that the compositions of glass enamel №. 1, 9-12 have spreadability that meets the requirements.
Glass-enamel coatings № 10,11 with a high content of alkaline oxides (more than 18%) are characterized by the presence of a large number of defects of the enamel layer in the form of burn-out.
Parameters of synthesized glass-enamel coatings of series B composition number composition №1 [mass persent] composition №12 [mass persent] composition number Chemical resistance class adherence strength class 1б 95 5 1b АА 4 2б 90 10 2b АА 4 3б 85 15 3b АА 3 4б 80 20 4b АА 1 5б 75 25 5b А 1 6б 70 30 6b А 1 7б 65 35 7b В 1 8б 60 40 8b В 2 9б 55 45 9b В 2 10б 50 50 10b В 3 The resulting enamel coatings were tested for chemical resistance and adhesion strength.
Thus, the structure of the coating is homogeneous, which indicates the completeness of the processes of interaction between the grains of frit compounds № 11 and 12.
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