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Online since: June 2021
Authors: Jun Jie Yang, Ya Lei Wu, Si Chen Li, Man Wang
GBFS contains a large number of amorphous vitreous mineral phases, which have no crystal characteristic peaks except for the magnesia feldspar and the calcium siliceous feldspar.
FRIA contains a large number of crystalline mineral phases, potassium feldspar, anorthite, and orthoclase, with extremely high crystallinity.
There are a large number of scattered amorphous phase substances in GBFS, and the mineral phase system belongs to CaO-MgO-Al2O3-SiO2, which is a typical water-quenched slag.
Besides, a large number of glass beads with smooth surface morphology and excellent sphericity are distributed in FA, which composition is silicon-aluminum oxide.
Fig. 3 Grain size distribution of the marine soft soil Sample preparation.
Online since: May 2011
Authors: Bin Liu, Jing Zhang, Yun Ting Lei, Shu Lin Yang, Li Hu
With the development of molecular biology, transgenic technique and gene recombinant technique, various kinds of recombinant human or non-human collagens and gelatins have been produced in different expression systems, such as CHO cells [13], transgenic mice [14], insect cells [15, 16], silkworm [17], tobacco plants [18], corn grain[19], barley seeds [20], Escherichia.
Materials and methods Construction of pPIC9KG6 expression vector and Selection of multicopy P. pastoris transformants The codon-optimized recombinant human gelatin monomeric gene (Gel) was designed based on the mRNA sequence of human type III collagen α1 chain (Accession Number:X14420).The fragment named G1 was six copied into G6 and synthesised to the expression vector called pPIC9KG6.
Limited by the acid hydrolysis technique (During acid hydrolysis, Asn and Gln were transformed into Asp and Glu) and the resolution power of A200 amino acid autoanalyser, the results of amino acid analyses only present the numbers of six most amino acid composition, but it is enough to indicated that the amino acid composition of recombinant human gelatin is the same as the theoretical composition.
Composition and molecular weight of recombinant human gelatin and human collagen III (α1) Amino acid Recombinant human gelatin (detection value) Recombinant human gelatin (theoretical value) Human collagen III (α1) a Number Molar ratio Number Molar ratio Number Molar ratio Ala (A) NDb ND 6 1.00 91 8.32 Arg (R) ND ND 0 0 49 4.48 Asn (N) ND ND 72 12.02 25 2.28 Asp (D) 62 c 10.38 c 0 0 30 2.74 Cys (C) ND ND 0 0 3 0.27 Gln (Q) ND ND 96 16.03 28 2.56 Glu (E) 128 c 21.49 c 24 4.01 49 4.47 Gly (G) 236 39.41 201 33.56 378 34.55 His (H) ND ND 0 0 7 0.64 Ile (I) ND ND 0 0 17 1.55 Leu (L) ND ND 0 0 22 2.01 Lys (K) 15 2.44 18 3.01 40 3.66 Met (M) ND ND 0 0 9 0.82 Phe (F) ND ND 0 0 8 0.73 Pro (P) 123 20.44 134 22.37 255 23.31 Ser (S) 35 5.84 48 8.01 48 4.39 Thr (T) ND ND 0 0 16 1.46 Trp (W) ND ND 0 0 0 0 Tyr (Y) ND ND 0 0 5 0.46 Val (V) ND ND 0 0 14 1.28 Total 599 d 100 599 100 1094 100 Molecular weight (kDa) 55.0 d 55.0 97.8 a 103~1196 amino acid residues of full human type III collagen α1 chain
Monomer tandem repeating strategy could allow the construction of different recombinant human gelatin genes with diverse number of monomer, thus, to produce new collagens with the required molecular weight; 5.
Online since: December 2014
Authors: Ding Yi Yang, Hao Li, Li Jie Ge, Wen Hua Wang, Han Yue
As the fine-grained water quenching of nickel slag quenching mixing with concrete has potential activity and play a role of micro-filling effect, in order to turn solid waste into wealth and that resources can be secondary use, it was studied as concrete mineral admixture [7],[8],[9],[10]and[11].
Table 4 The test result of Reye’s determination of soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Distance of pointer before test(A)/mm Distance of pointer after test (B)/mm Range differences of pointer(B-A)/mm Standard of range difference of pointer (B-A)/mm result 1 538 225 225 133 10 11 1 <5 qualified 2 538 225 225 133 12 13.5 1.5 <5 qualified Table 5 The test result of autoclave expansion test determination soundness of nickel slag powder numbers Specific surface area/(m2/kg) Reference cement/g Nickel slag powder/g Water requirement of normal consistency/ml Expansion rate/% result 1 538 400 400 205 0.2 qualified 2 538 400 400 205 0.1 qualified Table 4 and Table 5 show that, when the proportion of nickel slag powder is 50%, the soundness of nickel slag powder is up to standard.
Table 6 The activity index of nickel slag powder admixture which have different specific surface area numbers Specific surface area/(m2/kg) Flexural strength/MPa Compressive strength/MPa Activity index/% 3d 7d 28d 3d 7d 28d 3d 7d 28d 1 Calibrator sample 5.1 6.1 8.6 22.6 37.3 51.1 100 100 100 2 308 2.3 2.6 4.6 8.1 12.2 19.6 35.8 32.7 38.4 3 480 2.2 2.9 5.4 8.1 13.0 24.2 35.8 34.9 47.3 4 538 2.6 3.4 5.7 9.9 14.8 26.6 43.8 39.8 52.1 5 645 2.3 3.5 5.9 10.1 15.4 28.7 44.7 41.3 56.2 6 730 2.3 3.6 6.8 10.7 15.9 32.9 47.3 42.6 64.4 Table 6 show that, the activity index of nickel slag powder increased with the increase of specific surface area.
Table 7 Mixture ratio of concrete of per cubic meter numbers cement/kg Nickel slag powder/kg water/kg sand/kg stone/kg Water-bider ratio Sand ratio/% 1 404 0 190 715 1072 0.47 40 2 363.6 40.4 190 715 1072 0.47 40 3 323.2 80.8 190 715 1072 0.47 40 4 282.8 121.2 190 715 1072 0.47 40 Table 8 The strength of nickel slag powder concrete of different specific surface area and different amount of admixture numbers Specific surface area/(m2/kg) Ratio of replacing cement Compressive strength/MPa Ratio of compressive strength/% 3d 7d 28d 3d 7d 28d 0 -- 0.0 18.9 25.1 34.9 100.0 100.0 100.0 1 308.0 10% 15.6 22.1 32.6 82.4 88.3 93.4 20% 12.5 19.5 27.3 66.3 77.6 78.2 30% 11.1 17.4 25.3 58.8 69.3 72.5 2 480.0 10% 16.4 23.8 34.8 79.4 94.8 99.7 20% 14.4 21.5 33.7 65.3 85.7 96.6 30% 12.0 17.6 29.2 52.3 70.1 83.7 3 538.0 10% 17.0 24.7 34.9 78.9 98.4 100.0 20% 14.9 21.6 34.8 65.8 86.1 99.7 30% 12.5 19.5 33.7 55.3 77.7 96.6 4 645.0 10% 15.9
On the other hand, with the increase of specific surface area, when the specific surface area increased to 645m2/kg, there were also a large number of nickel slag powder particles not involved in filling and hydration though the powder can fill the gaps of cement slurry.
Online since: October 2013
Authors: Xiao Guang Ren, Yu Hua Tang, Xin Hai Xu
Secondly, based on the above reason, only a limited number of, not all significant digits can be kept during the binary-to- ASCII transformation, causing precision loss.
The double type data uses 64-bits (8 bytes) to store a floating-point data, which can represent a number with 15-16 significant decimal digits.
The float type data takes 32-bits (4 bytes) to store a floating-point data, which can represent a number with 7-8 significant decimal digits.
TABLE.1 the parameters of the three benchmark dambreak cavity pitzDaily Solver interFoam icoFoam pisoFoam Dimensionality 3D 3D 3D Number of cells 6229504 15625000 16131636 DeltaT 1.00E-03 1.00E-04 2.00E-04 timesteps 100 100 100 Write interval 1/2/4/10/none 1/2/4/10/none 1/2/4/10/none Number of fields 5 8 8 Decomposition Scotch Scotch Scotch C.
Enhancing disk-directed I/O for fine-grained redistribution of file data[J].
Online since: February 2003
Authors: Yu.V. Baldokhin, I.G. Brodova, Dmitriy Gunderov, E.V. Shelekhov, I.A. Tomilin, S.D. Kaloshkin, V.V. Stolyarov, E.A. Afonina, Victor V. Tcherdyntsev
Turns number Nt was varied from 5 to 25.
Depending on the spectrum complexity, the collection at the background level was performed within the limits 0.1-5 millions pulses/channel; the total number of accumulator channels was 400; after the convolution of two symmetrical spectra, a calculation using 200 points was performed.
Numbers near the spectra indicate its area occupied by the central component, %, which corresponds to the fraction Ω of "bonded" Fe atoms -5 0 5 0.992 0.994 0.996 0.998 1.000 Velocity, mm/s 14.8 Velocity, mm/s Relative Transmission 0.90 0.92 0.94 0.96 0.98 1.00 5.9 (b) (a) 0.93 0.94 0.95 0.96 0.97 0.98 0.99 1.00 4.4 (c) 0.992 0.994 0.996 0.998 1.000 7.6 8.7 (d) -5 0 5 0.985 0.990 0.995 1.000 (e)The X-ray diffraction analysis for the MA+HPT samples revealed their very fine nanocrystalline structure.
An effect of the anvil turn number Nt on the Fe solubility in Al was investigated for the RQ ribbon containing 8 wt. % Al.
Further heating leads to a decrease of Hv which may be associated with a coarsening of grains and a decomposition the Al-based solid solution.
Online since: February 2011
Authors: Lai Fei Cheng, Zhi Liang Hong, Juan Li Deng, Ke He Su
In order to fabricate Si3N4 ceramics without the additives or residual Si, it is necessary to develop a new fabrication process. [6] Chemical vapor deposition (CVD) or Chemical vapour infiltration (CVI) exhibit flexibility of composition design and have been demonstrated to be a very effective and matured enough method to fabricate SiC, carbon, and other matrices with ultra-pure and controllable grain sizes. [14-19] Earlier, in the 1970s, many researches have been conducted on CVD Si3N4.
But till now, the technological parameters for the deposition of Si3N4 have not caught on a systematic study. [39-45] Since the CVD/CVI experiment period is very long, and the cost is very high, it is not feasible to get optimal operating parameters by a great number of experimental studies.
min (1) Where s is the total number of the condensed-phase species, N is total number of the species in the system (the number of gaseous species is consequently N-s), p is the total pressure, ni is the moles of the ith gaseous species satisfying the following equation, and nicond is the moles of the ith condensed-phase species: Where aij is the atomicity of element j in species i, Bj is the total atomicity of element j and M is the total number of different elements.
It is clearly seen in Figure 3 that the concentration for a number of species changes significantly within three temperature regions, corresponding to about 400-500 K, 1200-1300 K and 1500-1600 K, respectively.
Online since: March 2022
Authors: Aneke Frank Ikechukwu, Mohamed M.H. Mostafa
Researchers like Gnananandarao et al; Alptekin and Hidayet; Elsaidy et al; Elsaidy, et al [13 -16] suggested that swelling pressure predictive models could also be developed based on investigations performed on a limited number of soils, but the draw of such model will the huge discrepancies between measured and predicted values with R2 of less than 0.6.
These models are proclaimed not to be universally valid for all types of expansive soils, due to a limited number of samples.
Geotechnical soil properties Soil designation Soil A Soil B Soil C Sampling depth (m) 0.0-1.2 0.0-1.2 0.0-1.2 Specific gravity Gs 2.67 2.72 2.70 GSA Sand 7.98 4.4.48 7.68 Silt 20.57 10.21 12.15 Clay 71.45 85.31 80.17 D10 - 0.0008 0.0053 D30 0.003 0.002 0.018 D60 0.01 0.018 0.045 Cu - 1.63 8.49 Cc 0.0009 0.038 1.36 Linear shrinkage(%) LS 18.19 22.13 16.42 Atterberg limit (%) LL 59.18 69.11 65.23 PL 28.47 25.18 27.12 PI 35.71 43.93 38.11 GSA= Grain size analysis **Cu= Coefficient of uniformity (D60/D10) ***Cc= Coefficient of curvature (D302/ D60 x D10) To evaluate the mineralogical compositions responsible for swelling activities, the investigated soils were subjected to X-Ray Diffraction (XRD) testing using Rigaku TTRA III diffractometer, and tests were performed at Cu Kα radiation (1.5418 Å) level.
Vanapalli, Semiempirical model for predicting the resilient modulus of unsaturated fine-grained soils.
Online since: October 2017
Authors: Janis Locs, Elga Sidhoma, Ilze Salma, Janis Zarins, Mara Pilmane
Numerous OPG-positive cells appeared in group A, while moderate number of them was found in groups B and C (p = 0.025; p = 0.027).
At higher magnifications, the micro porosity and grain size in the range from 400 nm to 1 µm was observed.
Numerous OPG-positive cells appeared in group A, while moderate number of them was found in groups B and C (U = 8.000, p = 0.025; U = 1.000, p = 0.027) (Fig. 3).
Number of 1 indicates area of OPG-containg bone cells, 2 – implanted biomaterial granules.
Online since: July 2011
Authors: Peter Herd, Jim Chen
Proper TCPT should be selected based on several factors: exposed temperatures and heating rates, number of temperature cycles, mechanical movements, chemical and / or alloy contents, applications and ease of use.
Depending on the process and the monitoring point, the TCPT is immersed in liquid metal for varying lengths of time, ranging from what could be consider continuous through to a cyclical process of a number of minutes.
Relevant characteristics of TCPTs There are a number of characteristics of TCPTs to be considered in selecting the most suitable, and as with many such decisions, there are a number of imperatives, and a number of ‘nice-to-haves’.
The MAC thermocouple tube is a true composite between fine-grained silicon carbide and boron nitride.
Even within the one casthouse, there should be a number of different types of TCPT, depending on the particular requirements of each application to have the most cost and quality effective solution.
Online since: July 2013
Authors: N.L. Singh, Chaitali Gavade, P.K. Khanna
The number of carbon atoms per cluster (N) can be calculated by following relation [23] in eqn. (4); the values are listed in Table 1.
Eg = 34.3/ÖN eV (4) Where N is the number of carbon atoms per cluster and Eg is the energy band gap.
Table 1 Band gap by direct allowed transitions, number of carbon atoms in pure PMMA and composites films irradiated by 85 MeV C- ion beam.
It may be attributed to splitting of crystalline grains due to absorption of large amount of energy and it also reflects the formation of disorder system.
This increase in conductivity is probably due to the generation of large number of charged and active chemical species, cations, anions, and radicals [36].
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