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Online since: January 2015
Authors: Monika Gwoździk
The size of grain is 7.5-8.5 acc. to standard [6] (Fig. 1).
Moreover, a large number of pits exists in this layer, reaching inside the steel to the depth of ~73 µm.
Based on DHN PDS and PDF4+2009 crystallographic database it has been found that the forming oxides are hematite (Fe2O3) and magnetite (Fe3O4) with catalogue card numbers: 01-079-0007, 01-089-0951, respectively.
Moreover, a large number of pits exists in this layer, reaching inside the steel to the depth of ~73 µm.
Based on DHN PDS and PDF4+2009 crystallographic database it has been found that the forming oxides are hematite (Fe2O3) and magnetite (Fe3O4) with catalogue card numbers: 01-079-0007, 01-089-0951, respectively.
Online since: June 2017
Authors: Duongruitai Nicomrat
In this saccharification, there is an addition of fermentation starters of "Luck pang”, moldy steamed rice grain, which is similar to koji, traditionally utilized for fermented foods.
At this step, the alcohol production, pH, total acidity, numbers of bacteria, fungal spores, and yeasts were determined every other day.
The banana fermented broth had high numbers of the fungal spores (determined by microscopic counts on a haematocytometer) during first 18 days and thus disappeared during an increase of alcohol production.
At this step, the alcohol production, pH, total acidity, numbers of bacteria, fungal spores, and yeasts were determined every other day.
The banana fermented broth had high numbers of the fungal spores (determined by microscopic counts on a haematocytometer) during first 18 days and thus disappeared during an increase of alcohol production.
Online since: September 2016
Authors: Oleg M. Utyev, N.S. Klochkov, U.P. Egorov
There are currently a large number of alloys on aluminum, copper, iron, nickel and other bases which strength properties can be considerably increased by heat treatment.
By means of grinding skins with various sizes of abrasive grains metallographic specimen were prepared for research of a microstructure.
Considerable number of particles of a new phase is allocated in the structure after heating up to 500ºС and 2-hour holding.
By means of grinding skins with various sizes of abrasive grains metallographic specimen were prepared for research of a microstructure.
Considerable number of particles of a new phase is allocated in the structure after heating up to 500ºС and 2-hour holding.
Online since: September 2013
Authors: Xi Hong Li, Min Wang, Jin Shan Luo, Bin Deng, Ling Min Shen
Optimization of Chromatographic Parameters for the Determination of Benzo(a)pyrene in Frying Oil by High-Performance Liquid Chromatography
Bin Deng1, 2, a, Min Wang1, b, *,
Ling Min Shen1, c, Jin Shan Luo1, d, Xi Hong Li1, e
1Key Laboratory of Food Nutrition & Safety (Tianjin University of Science & Technology), Ministry of Education, 300457, China
2COFCO Northsea Oils & Grains Industries (Tianjin) Co., Ltd, 300454, China
abindeng000@163.com, bwangmin107@gmail.com* (corresponding author),
clingminzb@163.com, dluojinshan1@163.com, elixihong606@163.com
Keywords: Optimization, HPLC, Benzo(a)pyrene, Frying oil
Abstract.
A vast number of researches over several decades have suggested the links between benzo(a)pyrene and cancers.
A number of studies have described several methods for the determination of B(a)p in vegetable oil.
A vast number of researches over several decades have suggested the links between benzo(a)pyrene and cancers.
A number of studies have described several methods for the determination of B(a)p in vegetable oil.
Online since: January 2013
Authors: Xue Min Cui, Liang Wu, Huan Liao, Bing Hui Mo, Yu Huai Yu, Rong Ping Hu
The reaction is a liquid-liquid reaction; the generated zinc molybdate has very fine grains and can be hardly centrifuged.
And the results are shown in Fig. 6 and Fig. 7: Fig. 6 X-ray diffraction graph of zinc Molybdate synthesized by double decomposition with sodium molybdate Fig. 7 X-ray diffraction graph of zinc Molybdate synthesized by ammonium heptamolybdate method Using the patterns above, we did retrieval and analysis in the database of X-ray diffraction patterns and the results are as follows: Zinc molybdate by sodium molybdate method: molecular formula NaZn2OH(MoO4)2H2O(card number:70-0161), belonging to the monoclinic system, space group C2/m Corresponding cell parameters: a=9.436 Å b=6.338?
c=7.679 Å β=115.80 Å Zinc molybdate by ammonium heptamolybdate method: molecular formula H3NH4Zn2Mo2O10 (card number:73-2389), belonging to the trigonal system, space group: R3m.
And the results are shown in Fig. 6 and Fig. 7: Fig. 6 X-ray diffraction graph of zinc Molybdate synthesized by double decomposition with sodium molybdate Fig. 7 X-ray diffraction graph of zinc Molybdate synthesized by ammonium heptamolybdate method Using the patterns above, we did retrieval and analysis in the database of X-ray diffraction patterns and the results are as follows: Zinc molybdate by sodium molybdate method: molecular formula NaZn2OH(MoO4)2H2O(card number:70-0161), belonging to the monoclinic system, space group C2/m Corresponding cell parameters: a=9.436 Å b=6.338?
c=7.679 Å β=115.80 Å Zinc molybdate by ammonium heptamolybdate method: molecular formula H3NH4Zn2Mo2O10 (card number:73-2389), belonging to the trigonal system, space group: R3m.
Online since: September 2013
Authors: Ying Wu, Chun Ming Xu, Qian Yao Sun, He Fang, Lian Kong
A number of thermoplastic or thermosetting polymers are used in modifying mortars and concrete.
All numbers are given in weight ratios to cement with the exception of Vf. 2.2 Specimen preparation and performance testing 2.2.1 Specimen preparation The mortar specimens were prepared with polymer emulsion to cement ratio by mass of 10%, the mixture proportions of mortars are shown in Table 1.
The SEM technique was applied right after the preparation of samples to observe the adsorption of polymer particles on cement grains and interaction among fiber, polymer particles and pastes.
All numbers are given in weight ratios to cement with the exception of Vf. 2.2 Specimen preparation and performance testing 2.2.1 Specimen preparation The mortar specimens were prepared with polymer emulsion to cement ratio by mass of 10%, the mixture proportions of mortars are shown in Table 1.
The SEM technique was applied right after the preparation of samples to observe the adsorption of polymer particles on cement grains and interaction among fiber, polymer particles and pastes.
Online since: December 2014
Authors: Patrícia Cristiane Santana da Silva, Gislene Valdete Martins, Vladimir Jesus Trava-Airoldi, Evaldo José Corat
The results showed the variation of friction coefficient and that deposition rate declines when increasing number of layers.
The samples were polished by using a sequence of different grain sizes to a mirror-like finish surface, and cleaned ultrasonically in an acetone bath for 10 min.
Table 1 – Summarized Raman spectrum results of DLC films according to silicon layers Sample D band position (cm-1) G band position (cm-1) FWHM (D) FWHM (G) % H ID/IG One interlayer 1400,5199 1568,5898 391.512 126.092 30,38 0,77 Multilayers 1391,226 1552,977 411,352 153,014 30,17 0,64 The results showed that for the film grown with alternate interlayers of DLC and silicon, the D and G peaks shift toward lower wave numbers, with a decrease in ID/IG ratio in relation to the film grown with one silicon interlayer.
It is possible to observe that the layer thickness decrease with increasing number of layers and growth time, in despite of the deposition parameters have been the same.
Raman spectra showed that increasing numbers of layers, it is possible increasing sp3/sp2 ratio.
The samples were polished by using a sequence of different grain sizes to a mirror-like finish surface, and cleaned ultrasonically in an acetone bath for 10 min.
Table 1 – Summarized Raman spectrum results of DLC films according to silicon layers Sample D band position (cm-1) G band position (cm-1) FWHM (D) FWHM (G) % H ID/IG One interlayer 1400,5199 1568,5898 391.512 126.092 30,38 0,77 Multilayers 1391,226 1552,977 411,352 153,014 30,17 0,64 The results showed that for the film grown with alternate interlayers of DLC and silicon, the D and G peaks shift toward lower wave numbers, with a decrease in ID/IG ratio in relation to the film grown with one silicon interlayer.
It is possible to observe that the layer thickness decrease with increasing number of layers and growth time, in despite of the deposition parameters have been the same.
Raman spectra showed that increasing numbers of layers, it is possible increasing sp3/sp2 ratio.
Online since: January 2012
Authors: Yun Ping Chen, Yan Chen, Ling Tong
In order to evaluate the restoration result, Equivalent Number of Look (ENL) and edge save index (ESI) are used as criterion.
As we know, fh(α) is the hausdorff dimension of the points where Hölder exponent equals α, while fg(α) evaluates the convergence speed of the probability that coarse grained exponents at resolution ε equals α when ε tends to 0.
We use denoising evaluation indexes, include equivalent number of looks (ENL) and edge save index (ESI), to estimate the images.
The ESI can then be written as[23]: Where m is the row number and n is the column number of the image.
As we know, fh(α) is the hausdorff dimension of the points where Hölder exponent equals α, while fg(α) evaluates the convergence speed of the probability that coarse grained exponents at resolution ε equals α when ε tends to 0.
We use denoising evaluation indexes, include equivalent number of looks (ENL) and edge save index (ESI), to estimate the images.
The ESI can then be written as[23]: Where m is the row number and n is the column number of the image.
Online since: October 2014
Authors: Run Xia Li, Qing Li, Yan Jiao Tong, Xin Ying Luan, Zhe Liu, Xiao Guang Yuan
After solution treatment the alloy was proceed with low-temperature ageing treatment, a large number of dispersively tiny phases precipitated in the matrix of the alloy, which exhibits strengthening action.
The number, size, shape and distribution of precipitated phases in the alloy were the key factor which affected the strength of the alloy, so increase the number of precipitated phases in alloy and improve the morphology and size of strengthening phase can significantly increase the mechanical properties of alloys [2-5].
With the increase of the second-phase number, the dispersion strengthening effect more obvious.
TEM microstructure of cast Al-5.5Fe-4Cu-2Zn-0.4Mg-0.5Mn alloys (a)Precipitated phase after T6 heat treatment(b)Precipitated phase after T6 heat treatment Conclusions (1) After T6 heat treatment, the tensile strength of casting Al-5.5Fe-4Cu-2Zn-0.4Mg-0.5Mn alloy improved significantly, grains are fine and well-distributed
The number, size, shape and distribution of precipitated phases in the alloy were the key factor which affected the strength of the alloy, so increase the number of precipitated phases in alloy and improve the morphology and size of strengthening phase can significantly increase the mechanical properties of alloys [2-5].
With the increase of the second-phase number, the dispersion strengthening effect more obvious.
TEM microstructure of cast Al-5.5Fe-4Cu-2Zn-0.4Mg-0.5Mn alloys (a)Precipitated phase after T6 heat treatment(b)Precipitated phase after T6 heat treatment Conclusions (1) After T6 heat treatment, the tensile strength of casting Al-5.5Fe-4Cu-2Zn-0.4Mg-0.5Mn alloy improved significantly, grains are fine and well-distributed
Online since: June 2012
Authors: Yan Li Huo, Chun Peng Wang, Yu Feng Chen, Jie Tang, Hai Lin Liu, Ming Hui Wu
There is no clear joint interface between the two substrates in an appropriate solid volume loading and grain size.
It also can be seen that there is no clear welding interface between the two substrates, which is due to that the slurry coated can penetrate into the substrates by capillary action from a large number of pores in substrates before sintered.
It also can be seen that there is no clear welding interface between the two substrates, which is due to that the slurry coated can penetrate into the substrates by capillary action from a large number of pores in substrates before sintered.