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Online since: April 2017
Authors: Karel Matocha, Roger Hurst
Disc test specimens with d = 8 mm in diameter and initial thickness of h0 = 0.5 mm are recommended because this specimen thickness is intended to assure the number of grains through the thickness is adequate to permit bulk properties to be obtained.
A large number of European laboratories have pledged their support and a programme has been launched which addresses the changes required to the Code of Practice necessary for realising the status of an EU standard. 3.
Finally Round Robin testing programmes for both SP Tensile/Fracture and SP Creep have been devised and launched involving a number of laboratories for verification and validation purposes and early results are described in the paper. 6.
Online since: September 2022
Authors: Noshin Mir, Ahmad Gholamalizadeh Ahangar, Mir Hassan
In addition to the conducted studies on spinach [7-9], the positive effect of TiO2 NPs on other plants, including Vicia narbonensis L. and Zea mays L. [10], wheat [11], tomato, onion, radish [12],and parsley [13]; significantly ameliorate the salinity effects in Moldavian balm [14] and decrease the number of chiasmata in faba bean seeds [15].
Treatment control Nano-TiO2 DS-nano-TiO2 Concentration (ppm) 0 1 10 50 100 500 1 10 50 100 500 K (gr.100-1) 0.49g* 0.48g 0.52e 0.58b 0.51ef 0.56c 0.48g 0.56c 0.50f 0.61a 0.54d Zn (ppm) 18.72cd 12.29f 18.28d 26.33b 16.25e 17.48de 30.60a 17.16de 20.48c 9.65g 12.71f Fe (ppm) 2.07f 2.45b 2.38c 1.94h 2.01g 2.44b 1.96h 2.23e 2.67a 2.35c 2.31d *The numbers in each column with the same letters are not statistically significant in Duncan.
Titanium Concentration (ppm) Catalase (Unit g fresh weight) Ascorbate (Unit g fresh weight) Guaiacol (Unit g fresh weight) chlorophyll a (mg. g-1 fresh weight) a/b Nano-TiO2 Nano-TiO2 0 0.5*10-4 e* 0.5*10-3 ef 0.8*10-4 de 2.12 j 2.12c 1 1*10-4 cd 0.1*10-3 g 0.8*10-4 de 3.08 e 1.61e 10 1.1*10-4 c 1.0*10-3 c 0.9*10-4 de 2.21 i 2.03c 50 0.5*10-4 e 0.4*10-3 f 0.9*10-4 cd 3.32 b 1.75d 100 0.6*10-4 de 0.8*10-3 d 0.8*10-4 de 1.67 k 1.15f 500 0.3*10-4 e 1.4*10-3 b 0.5*10-4 f 2.85 g 1.60e DS-nano-TiO2 0 0.5*10-4 e 0.5*10-3 ef 0.8*10-4 de 2.12 j 2.12c 1 0.2*10-4 e 0.2*10-3 g 1.2*10-4 b 2.87 f 2.73b 10 2.4*10-4 b 0.7*10-3 de 0.7*10-4 e 3.25 d 1.81d 50 2.9*10-4 a 0.6*10-3 ef 0.9*10-4 d 2.81 h 2.03c 100 1*10-4 cd 6.7*10-3 a 1.1*10-4 bc 3.28 c 1.87d 500 2.0*10-4 b 0.1*10-3 g 1.7*10-4 a 3.37 a 3.35a *The numbers in each column with the same letters are not statistically significant in Duncan.
[2] Mohammadi, K, Grain oil and fatty acids composition of soybean affected by nano-iron chelate, chemical fertilizers and farmyard manure.
Online since: July 2013
Authors: M. Mohapatra, B.S. Tomar
For getting the fine grained product, oxides facilitating nucleation such as TiO2/ZrO2 are normally added into the glass matrix.
The elements of these oxides have a co-ordination number of four.
The elements of these oxides have co-ordination number in between those of glass formers and glass modifiers.
Irradiation by fast neutrons produces sufficient number of atomic displacements to simulate the effects of ballistic interaction.
Significant broadening is also observed at the wave number region 3300 cm-1.
Online since: January 1993
Edited by: M. Fuentes, J. Gil Sevillano
A number of papers deal with local orientation determination techniques, such as EBS.
Online since: September 2022
Authors: Mohammad Reza Esfahani, Ali Abdallah Youssef
In addition to the effect of different numbers of water rounds in the magnetic field, other variables including steel fibers, super-plasticizers and silica-fume were considered in the concrete production in order to obtain the ideal possible performance for recycled aggregate concrete made with 100% coarse aggregates replacements.
Accordingly, the electric charge of water molecules will be reduced, and thus, the number of water molecules per unit volume will be more.
In this research, to achieve the slumps corresponding to the workability caused by the different numbers of water rounds in the magnetic field, different amounts of super-plasticizer obtained by "trial and error" process have been used. 2.2.
So that more cement grains were hydrated which may result to an increase in the tensile strength of the concrete, as well as other mechanical properties [31, 57, 60].
Figure 14: The suggested load-deflection curve in the PCS method areas [65, 67] After the peak load, the locations on the curve with deflections corresponding to different ratios derived by dividing the span length by an arbitrary number (L/M) are calculated.
Online since: January 2022
Authors: Jonah Chukwuemeka Agunwamba, Emmanuel Ikechukwu Ugwu
Nevertheless, when the process parameters involved are large, this approach becomes time-consuming, with a larger number of experimental runs.
Corn (Zea mays) is among the most widely consumed cereal grains in Nigeria and it is grown in commercial quantities both for consumption and agro-based industrial applications [26].
The number of experimental runs was obtained using Equation 2.
N=2n-1+2n+nc (2) Where N= total of runs, n=total number of parameters, and nc =number of center points [32].
Using the above expression, the total number of experimental runs gave a total of 32 experimental runs.
Online since: April 2023
Authors: Lei Lei He, Fu Jie Li, Xin Ye Cao, Shuai Heng Liu
Figure 5 The aggregate and isolated traps model for the Sr2MgSi2O7:Eu2+, Dy3+ long afterglow materials [57] Many researchers have studied a certain number of experiments and theories about luminescence traps.
He et al. [70] added luminescent materials and reflective materials to concrete, and found that these admixtures reacted with cement hydration products to generate a large number of CH and AFm crystals, which promoted the hydration reaction of unhydrated cement particles.
In addition, the long afterglow characteristics of luminescent materials are mainly affected by the type, number, location and concentration gradient of traps.
Insights into the element gradient in the grain and luminescence mechanism of the long afterglow material Sr2MgSi2O7: Eu2+, Dy3+[J].
Online since: March 2017
Authors: Małgorzata Norek, Dariusz Zasada, Dariusz Siemiaszko
Under a severe localized dielectric breakdown the voids exceed a critical number and size, which is a direct reason for separation of neighboring cells.
This means that the outer part of the nanotubes consists of elements with lower atomic number Z.
Acknowledgments The research was financed by Polish National Science Centre (Decision number: DEC-2012/07/D/ST8/02718).
Ngan, Fast fabrication of self-ordered anodic porous alumina on oriented aluminum grains by high acid concentration and high temperature anodization, Nanotechnology 24 (2013) 215602 (10pp)
Online since: March 2023
Authors: Bambang Suhardi, Novie Susanto, Rahmaniyah Dwi Astuti, Pringgo Widyo Laksono, Joseph Muguro
Article Growth and Trend Analysis, From 2012 to 2022, there will be an increase in the number of articles in the annual publications on the use of EEG to research cognitive performance.
As shown in Fig. 2, the data indicate a rising trend in using of the EEG index to measure cognitive function, with 2021 seeing the maximum number of publications.
Table 1 presents selected journal names and the number of articles from 2012 to 2022.
The number of occurrences in the circle shows the term network.
Because it is necessary to control a number of elements and variables in order to gather reliable data, experimental design is the best research methodology.
Online since: January 2013
Authors: Qi Xing Zhou, Wei Tao Liu, Jun Cheng Ni
Trees in particular have a number of attributes (e.g. high biomass, economic value), which make them attractive plants for such a use.
A number of previous studies have shown that zinc is easily translocated to the leaves.
Heavy metal uptake and accumulation efficiency of trees could be altered by a number of soil factors, including soil heavy metal speciation, soil pH, CEC and soil fertility etc.
Eriksson, A field study on factors influencing Cd levels in soils and in grain of oats and winter wheat, Water, Air, Soil Pollut. 53 (1990) 69-81
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