As the distance between the measuring point and the surface depth increases, the environmental humidity decreases by the same magnitude, while the humidity of A, B, and C decreases by a decreasing trend.
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In addition, the concentration of Pb 2+ in the pore solution showed an increasing trend with an increase in the Pb 2+ dosage.
Furthermore, by comparing the average CTEs of glass-ceramic samples with varying Na 2 O additions prepared at their respective optimal sintering temperatures, with increasing Na 2 O additions, the crystallinity of the samples first increased and then decreased, whereas the average CTE exhibited an increasing trend.
The goodness of fit R 2 for all three fitted curves exceeds 92%, indicating highly significant correlations between the roughness indicators and tensile strength.
The major conclusions are drawn as follows: (1) As the temperature rises (25–600 °C), the mass of granite exhibits a decreasing trend, while its volume and porosity increase nonlinearly.
As the activation temperature increases, the interlayer spacing generally exhibits a decreasing trend, indicating that the carbon structure tends to become more ordered and graphitized at higher activation temperatures.
Although the hydrogen storage capacity sustains an increasing trend, its growth rate is thermally inhibited, declining sharply from approximately 0.02 wt%/s at the initiation to 0.0035 wt%/s at t = 20 s.
In the calibration analysis of the precipitation phases, the Ni/Si atomic ratio showed a decreasing trend, while multiple Cr-containing Ni-Si-Cr ternary precipitation phases also formed in the alloy.
The ionic conductivity of the NPAM and APAM groups showed a decreasing trend with increasing dosage, whereas the CPAM group showed the opposite trend.
With increasing dosage, the proportions of micropores (<10 nm) and macropores (>1000 nm) in the samples showed an increasing trend, whereas the proportion of mesopores (10–1000 nm) decreased.
From Figure 4 , it can be observed that increasing the beech sawdust blending ratio leads to an increasing trend in tar and gas yields.
With increasing W&D replacement ratio, a decreasing trend in compressive strength was observed.
This indicates that with the increase in MPCE content, more and more polycarboxylate molecules are not effectively adsorbed by cement particles and thus remain in the liquid phase, resulting in a decreasing trend in the measured surface tension of the liquid phase.
At 250 Hz, the SPL exceeds that at 125 Hz and also shows a decreasing trend with elevation, though the variations among measurement points become less regular.
For compressive strength, factor A (BF length) shows the strongest effect (F = 14.031, p = 0.001), indicating a highly significant contribution.
The Impact of Varying Roller Speeds on Important Parameters In the downstream area of the molten pool (X > 0 mm), the roller surface temperature exhibited a decreasing trend, as illustrated in Figure 6 a.
For the extinction coefficient of the film, it shows a decreasing trend with the increase in Al 2 O 3 doping content after a slight increase at low doping content (2.5 at%).
With the increase in Al 2 O 3 doping content, the refractive index and extinction coefficient of TiO 2 films decrease continuously, while the optical band gap and surface roughness show an increasing trend.
FSSW joints in their turn are highly responsive to such parameters of the process as rotating speed, depth of the plunge, and dwell time, and optimal parameters result in highly significant increases in lap shear strength and hardness, but difficulties in defect suppression and interface uniformity are still present.
Tensile strength ( Figure 10 c): The tensile strength in the heat-treated state shows an increasing trend with the increase in Cu content, but the high-Cu samples slightly decrease while the low-Cu samples increase.
From Table 3 and Figure 4 , it is clear that the temperature difference in the casting is quite significant and is especially evident at the initial stage after pouring.
The resulting relationship (Equation (2)), presented in a surface and layer diagram ( Figure 9 ), shows the highly significant impact of the w / c ratio on concrete density, as well as the significant impact of the proportion of waste additive ( WP / c ).
Consequently, P r exhibits a decreasing trend with increasing heating/cooling rate at an annealing temperature of 550 °C and an increasing trend at 700 °C ( Figure 16 b).
In contrast, the 1 °C·min −1 curve exhibits a decreasing trend with increasing temperature, while the 7 °C·min −1 curve displays comparatively low values across all temperatures that increase slightly with temperature.
The calculated microstrain presented in Figure 12 c remains relatively independent of the temperature, apart from the 7 °C·min −1 curve, which shows a slightly increasing trend with rising temperature.