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Algebraic Structures I (Matrices, Groups, Rings, and Fields)
Published in R. Balakrishnan, Sriraman Sridharan, Discrete Mathematics, 2019
R. Balakrishnan, Sriraman Sridharan
The centerGroup!centre of a group G consists of those elements of G each of which commutes with all the elements of G. It is denoted by C(G). Thus, C(G)={x∈G:xa=axfor eacha∈G}
Elementary Algebra
Published in Dan Zwillinger, CRC Standard Mathematical Tables and Formulas, 2018
If p is prime, then there is only one group of order p, the group (Zp,+) $ ({\mathbb{Z}}_{p} , + ) $ .
Effects of different phosphorus concentrations on growth and biochemical composition of Desmodesmus communis (E.Hegewald) E.Hegewald
Published in Preparative Biochemistry & Biotechnology, 2021
Rıza Akgül, Füsun Akgül, İnci Tüney Kızılkaya
Second abundant amino acid was valine (2.37 mg/g) for control group; lysine (5.69 mg/g) for 50% P + group; alanine (2.25 mg/g) for 50% P- group; alanine (3.12 mg/g) for 75% P + group and methionine (1.321 mg/g) for 75% P− group (Table 3). All groups except 75% P− group has reduced arginine content compared with control group. During stress arginine have important roles in cell physiology such as participating in the regulation of the osmotic pressure of cell membranes and prohibiting the aggregation of soluble proteins.[33] Because of this in stress conditions arginine is expected to be in high amounts. Although in our study, the percentage of the arginine was 81% in the control group while it reduced within the experiment groups except 75% P- group.
Evaluation of skid resistance of pervious concrete slabs under various winter conditions for driver and pedestrian users
Published in Road Materials and Pavement Design, 2021
Harry Rodin III, Somayeh Nassiri, Othman AlShareedah, Mina Yekkalar, Liv Haselbach
Twenty-seven PC slabs with approximate dimensions of 25.4 by 25.4 by 8.9 centimeters (10 by 10 by 3.5 inches) were cast in three groups of 20% (L-low), 25% (M-medium), and 35% (H-high) targeted hardened porosity (P). All slabs were cast from one mix design and the various P levels were achieved by changing the mass of PC placed in the mould. First, the fresh density (D) of each PC batch was tested according to ASTM C1688 (ASTM, 2014) to determine the mass of the fresh PC to be placed in the moulds. The medium target P was the same as the mixture design P; for the other P levels, the mass was reduced accordingly to achieve the two different target porosities. Each slab was cast in two lifts, and uniform compaction was achieved by rodding the edges and corners, as well as drops of a standard Proctor hammer, as needed. The slab surfaces were then finished by rolling a rod over the surface and using a float when needed to mimic field finishing of PCP to the best possible. In Figure 1, examples of slabs cast from each porosity group are shown where the change in surface texture is highlighted in the binary images. Nine slabs were cast in each P group (Figure 2(a)).
Visual Improvements after Perceptual Learning Transfer from Normoxia to Hypoxia
Published in The International Journal of Aerospace Psychology, 2021
Di Wu, Pengbo Xu, Na Liu, Chenxi Li, He Huang, Wei Xiao
For the untrained eye, the same analyses were conducted, and the same pattern of results was found as for the trained eye. Specifically, the main effects of training and condition were significant, F(1, 6) = 27.19, p = .002, and F(1, 6) = 9.62, p = .021, respectively. Additionally, no interaction effect was found, F(1, 6) <1. The VA was −0.07 ± 0.05 logMAR and −0.02 ± 0.03 logMAR in normoxia and hypoxia, respectively, for the pretraining tests and −0.13 ± 0.04 logMAR and −0.09 ± 0.03 logMAR in normoxia and hypoxia for the posttraining tests, respectively. Thus, even in hypoxia and for the untrained eye, the improvement in VA after perceptual learning existed. Furthermore, the improvement in VA was 1.23 ± 0.34 dB (range: 0 dB to 2.00 dB; or Pgroup = 15.21%) for normoxia and 1.32 ± 0.25 dB (range: 0.25 dB to 2.25 dB; Pgroup = 16.41%) for hypoxia. No significant difference was found in CS improvement between the two respiratory conditions, t(6) = 0.26, p = .804.