Excerpts

The present study shows about 50% decrease in recrystallized fraction with 0.1 wt.% Cr addition in 7449, which is quite significant considering that only a maximum of 4% drop in hardness was observed after artificial aging to the T6 condition. 4.3.

However, in the past five years a strong trend toward the usage of machine learning (ML) algorithms has arisen [ 19 , 20 , 21 ].

Furthermore, the results showed a clear trend towards using a specific steel grade.

However, if the grid network has a low aperture ratio, an air layer behind it or several stacked layers, its sound absorption may be significant.

However, the presence over the past five years of several patents on green laser technology (US 8675698B2, US 2022/0314366A1), on converting a laser radiation of longer wavelength to a laser radiation of shorter wavelength (US 9042419B1) and on the use of multi-lasers with different wavelengths (US 2017/0021455A1, US 2015/0246412A1) suggests a clear trend in the PBF-LB/M machine market towards this technology.

The delta CAL values calculated for 12 months could be considered marginally significant at the selected level of significance of 0.05.

The investigation was dedicated to graphene pastes, which represent a strong trend in the development of screen-printing technology. 2.

The water contact angle values show an increasing trend linked with GO concentration in all GO/BC nanocomposites ( Figure 13 ).

The maximum power efficiency of the QD-EL device also showed a trend similar to EQE max , with values of 3.35, 3.38, 4.69, and 1.77 lm/W, respectively.

[ 19 ], where the same membranes were used, the whey permeate flux was lower than the water flux, suggesting that the adsorption fouling and blockage of the membrane pores was quite significant.

While microscopy techniques such as SEM, TEM, EBSD, and EDS, provide very useful information, they are inherently destructive and require preparation that can, in some cases, be quite significant.

During the friction process, the value of circularity of the transfer film ( Figure 11 f) gradually increased, indicating that the boundary profile of the transfer film approaches a circle more closely; however, the rectangularity of the transfer film ( Figure 11 g) did not exhibit a significant trend.

However, with the addition of GNSs, the tensile strength and elongation show a decreasing trend.

Additionally, the apparent densities of CRCA also showed a decreasing trend with increasing APS; however, the degree of change for CRCA demonstrated differences from those for NCA and RCA.

The observation of the crack localization effect in cracked beams—resulting from the nonlinear interaction of longitudinal vibration and ultrasound—is quite significant.

[ 22 ] observed a decreasing trend in the Seebeck coefficient with increasing temperature and Cu deficiency for all samples of Cu 3−δ SbSe 4 (0 ≤ δ ≤ 0.04) in the range of 300–675 K, with Cu 2.99 SbSe 4 exhibiting a maximum value of 263 μVK −1 at 475 K.

The decrease in friction that occurs after the running-in phase does not lead to stabilisation but shows a slightly increasing trend.

Additionally, the specimen exhibited an increasing trend in recovery stress during the cooling process, which is attributed to the increase in both elastic modulus and recovery stress caused by the thermally induced martensitic transformation during cooling [ 49 ].

On the other hand, the recovery stress of the SWN specimen showed a decreasing trend until it reached the maximum temperature at a heating temperature of more than 200 °C, as shown in Figure 14 b.

The value of the activation energy of the AC conduction process in the grain boundaries showed an increasing trend with the increasing content of samarium ions Sm 3+ compared with undoped ceramics.

The replacement rate of RCA: F cement > F > F 0.01 , indicating that the RCA replacement rate exerts a highly significant effect on the 7 d unconfined compressive strength, which is weaker than that of cement content; c.

The results demonstrate a clear trend of increasing softening points with higher NM content, suggesting improved performance in hotter conditions.

The average corrosion rate exhibited a decreasing trend with time.

Figure 5 illustrates an increasing trend in Ca 5 (SiO 4 ) 2 (OH) 2 contents as a function of loaded wollastonite.

Moreover, quite significant differences in the course of the 2,4-D adsorption isotherms should be noted, especially in the area of lower concentrations for the three tested fractions.