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Online since: July 2020
Authors: Sukarni Sukarni, Lukman Arifianto Andi Saputra
In 2016 the number of waste generation in Indonesia reached 65,200,000 tons per year with a population of 261,115,456 people[1].
This final stage of oxidation occurs in ash when the oxygen concentration increases so that the structure of the ash is formed in small grains [12].
Acknowledgments The financial support from "Penelitian Dasar Unggulan Perguruan Tinggi" the year 2019 with grant's number 19.3.82/UN32.14.1/LT/2019 was acknowledged.
Online since: November 2012
Authors: Chi Li, Jing Jing Zhang, Li Ping Gao
There have been a large number of research results on the mechanical responses of the Pavement-subgrade system under vehicle load.
In this figure, the down arrow shows the action point of the wheel load and the letter stand for horizontal node number.
[2] Malla, Ramesh B.; Joshi, Shraddha: Subgrade resilient modulus prediction models for coarse and fine-grained soils based on long-term pavement performance data[J].
Online since: July 2015
Authors: Nurazim Ibrahim, Hamidi Abdul Aziz, Mohd Suffian Yusoff
The most probable number (MPN) for E. coli was calculated after 24 h of incubation at 35 °C ± 5 °C through the MPN table provided.
This condition usually occurs in young-deposited, fine-grained deltaic and alluvial sediments.
Fe intoxication may also occur among a number of people with genetic and metabolic diseases, such as hemachromatosis [19].
Online since: July 2006
Authors: Sybrand van der Zwaag, A. Miroux, Zacharias J. Lok
In case of nucleation in an undeformed microstructure, Ntot is the number of atoms per unit volume.
In a deformed microstructure, nucleation is assumed to take place on subgrain boundaries and Ntot is therefore the number of atomic sites on the subgrain boundaries per unit volume.
Detailed TEM observations of the dispersoid radii as a function of time also revealed that due to rapid dislocation diffusion [11] or grain boundary diffusion [12] the time dependency of the dispersoid size may differ from the usual t 1/2 dependency deduced from the classical Zener equation used in the model.
Online since: May 2011
Authors: Wei Sun, Jie Lie, Hai Chuan Wang, Kai Zhong Wang, Jian Wu, Jian Jun Wang
To control proper acid-soluble aluminum content in steel and the stability of acid-soluble aluminum not only can guarantee calcium treatment effect, reduce inclusions and AlN in steel, but also can refine grains and improve cold heading property; the stability of w[Al] is critical to the steel.
Table 7 Mechanical properties of rolling materials of SWRCH6A cold heading steel Property of rolling material Rm/MPa ReL/MPa A/% Z/% Max. 370 280 44 75.5 Min. 345 235 39 70.5 Average 362.1 262.1 42.1 73.7 ML08Al standard 334 196 33 60 From Table 7, reference is made to mechanical properties of ML08Al cold heading steel to check the mechanical properties of SWRCH6A cold-heading steel of 7 batch numbers, tensile strength Rm, yield strength ReL, percentage elongation A and reduction of cross section Z, all are in conformity with the mechanical property indexes of ML08Al, and the average value of each index respectively is Rm=362.1Mpa, ReL=262.1Mpa, A=42.1%, Z=73.7%.
Microstructure and inclusion rating Metallographic structure analysis is done to the rolling material of cold-heading steel of 4 batch numbers to observe the microstructure and Vickers hardness HV (MPa) for 8 samples.
Online since: May 2010
Authors: Marina V. Koudriachova
Furthermore, Li self diffusion appeared to be relatively slow not only in comparison with other nanocrystalline materials but also with some coarse grained Li-conductors [11].
The number of k points was determined from a spacing in reciprocal space of 0.1 Å -1.
Based on the relative site stability and the number of available sites, occupancy of A2 sites will proceed up to [Li]/[Ti]=0.5, followed by the occupancy of the C-sites (up to [Li]/[Ti]=0.75) and that of the A1-sites.
Online since: May 2010
Authors: Anna Maria Paradowska, Francesco Grazzi, Laura Bartoli, Francesco Civita, Antonella Scherillo, Marco Zoppi
This blade, although not signed, is attributed to the Kanesada School of the Koto Mino Tradition, in the Mino province, basing to its features, shape, temper line, and surface grain-pattern.
The presence of a large number of holes in the Aoe blade tang means that this blade has been shortened more than once.
To fully characterize the samples we have chosen to perform short measurements on a large number of points on the blades.
Online since: September 2013
Authors: De Gang Zhang, Li Na Shi, Xu Dong Zhao, Yong Shun Yang
In order to effectively reduce the grassland degradation in recent years, countries in the region launched the "Grain for Green", " Three-river headwater area Nature Reserve building", "pasture" , "Ecological migration", "Reduce livestock number project" and a series of major ecological construction projects, through the construction of artificial turf and rodent control, Improved grassland fencing and other technical measures to achieve effective restoration of degraded grassland and reconstruction.
Soil erosion caused by the loss of a large number of grassland degradation organic matter, N, total potassium, total phosphorus, available phosphorus, available potassium and other nutrients, with degenerative succession of vegetation, soil degradation is more and more serious, more and more barren soil [14].
Online since: February 2013
Authors: Wei Hua Chen, Jie Wang, Zheng Chen, Xiao Yong Pan, Ling Peng
However, as the CTR technology gets marginalized, there are about 500,0000 old CRT TVs discarded each year and the number continue to increase year by year[1].
And the grain size which is far more than or less than 10 μm can be regard as aluminum foil and glass powder, respectively.
Table 2 The composition of waste phosphors after roasting with NH4Cl tested by ICP-AES Composition Y Eu Al Fe Zn Concentration (g/L) 14.96 0.89 0.11 0.76 4.32 Table 3 Design of orthogonal table L9 (3)3 of obtained phosphors Levels (A)pH (B)The amount of Na2S/mL (C) The amount of H2C2O4 /mL 1 1 17.20 26.10 2 2.5 20.64 39.15 3 4 24.08 52.20 Table 4 The result of orthogonal test Test number 1 2 3 4 5 6 7 8 9 (A)pH value 1 1 1 2.5 2.5 2.5 4 4 4 (B)The amount of Na2S (mL) 17.20 20.64 24.08 17.20 20.64 24.08 17.20 20.64 24.08 (C)The amount of H2C2O4 (mL) 26.10 39.15 52.20 39.15 52.20 26.10 52.20 26.10 39.15 Y recovery rate (%) 97.61 97.89 98.54 97.59 96.16 91.82 92.01 83.65 84.17 Eu recovery rate (%) 97.91 96.21 96.11 96.11 92.55 85.55 87.40 69.90 69.93 It can be seen in table 4 and table 5 (1-2) that compared to the Na2S and H2C2O4, pH value plays a more important role in the recovery rate of Y and Eu.
Online since: May 2025
Authors: Maraghi Muttaqin, M. Sabri, Muhammad Yani, Bustami Syam, Armanda Putra, Marselus Pangestu, Muhammad Abdul Hadi
The road safety barriers were provided to substitute the existing road markers which are designed in the accordance with the Regulation of the Minister of Transportation of the Republic of Indonesia PM number 14 of 2021 amendment to the Minister of Transportation Regulation Number PM 67 of 2018.
Sieving the sand to get the same grain size and separate other particles which are not needed such as gravel, dirt, wood, dry leaves, etc. 3.
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