A cold roll-bonding process using AA1050, AA5052 and AA6061 alloy sheets is performed without lubrication. The roll-bonded specimen is a multi-layer complex aluminum alloy sheet in which the AA1050, AA5052 and AA6061 sheets are alternately stacked. The microstructural evolution with the increase of annealing temperature for the roll-bonded aluminum sheet is investigated in detail. The roll-bonded aluminum sheet shows a typical deformation structure in which the grains are elongated in the rolling direction over all regions. However, microstructural evolution of the annealed specimen is different depending on the type of material, resulting in a heterogeneous microstructure in the thickness direction of the layered aluminum sheet. Complete recrystallization occurs at 250 oC in the AA5052 region, which is lower by 100K than that of the AA1050 region. Variation of the misorientation angle distribution and texture development with increase of annealing temperature also differ depending on the type of material. Differences of microstructural evolution between aluminum alloys with increase of annealing temperature can be mainly explained in terms of amounts of impurities and initial grain size.

Herein a rich, Se-nanoparticle modified Mo-W18O49 nanocomposite as efficient hydrogen evolution reaction catalyst is reported via hydrothermal synthesized process. In this work, Na2SeSO3 solution and selenium powder are used as Se precursor material. The structure and composition of the nanocomposites are characterized by X-ray diffraction (XRD), high-resolution field emission scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), EDX spectrum analysis and the corresponding element mapping. The improved electrochemical properties are studied by current density, and EIS analysis. The as-prepared Se modified Mo-W18O49 synthesized via Na2SeSO3 is investigated by FE-SEM analysis and found to exhibit spherical particles combined with nanosheets. This special morphology effectively improves the charge separation and transfer efficiency, resulting in enhanced photoelectric behavior compared with that of pure Mo-W18O49. The nanomaterial obtained via Na2SeSO3 solution demonstrates a high HER activity and low overpotential of -0.34 V, allowing it to deliver a current density of 10 mA cm2.

This research focused on the verb ‘Yu’, investigates from a synchronic and diachronic perspective, analyzes the characteristics of the basic meaning represented by the meanings of ‘give’ and ‘socialize with sb’. and the development and changes of semantics, and demonstrates them through diagrams. And also analyzeds the semantic relationship between the semantic items of the verb ‘Yu’. Through the investigation of the semantic relationship, we can give an explanation tha why the meaning of ‘Yu’ in the meaning of ‘together’ can be explained to ‘help’, ‘give’, ‘applaud’ and ‘socialize with sb.’ We think the result breaks through the limitations of previous research. This research also pays attention to the expansion of the semantic function of the verb ‘Yu’, especially the ‘introduce tool’ function and the “passive” function. Regarding the function of ‘introduce tool’, this article refers to the formula of “COMITATIVE tool case INSTRUMENT” in linguistic typology, and sorts out the meaning of ‘Yu’ from ‘accompany’ to ‘attachment’ and then to ‘utilization’, and at last develop to the ‘introduce tool’ function. Regarding the “passive” function, after specific analysis, the conclusion is that the “passive” function of ‘Yu’ comes from two development paths, one is induced by the meaning of ‘give’, and the other is induced by the meaning of ‘accompany’. The common point of the ‘passive’ function is that they have experienced ‘causative’ in the previous stage of passivity. The difference is that the ‘causative’ of the former approach comes from ‘give’, but the source of the latter way comes from ‘accompany’.

In this study, we investigate the effect of the duration of mechanical alloying on the microstructures and mechanical properties of ODS ferritic/martensitic steel. The Fe(bal.)-10Cr-1Mo pre-alloyed powder and Y2O3 powder are mechanically alloyed for the different mechanical alloying duration (0 to 40 h) and then constantly fabricated using a uniaxial hot pressing process. Upon increasing the mechanical alloying time, the average powder diameter and crystallite size increased dramatically. In the initial stages within 5 h of mechanical alloying, inhomogeneous grain morphology is observed along with coarsened carbide and oxide distributions; thus, precipitate phases are temporarily observed between the two powders because of insufficient collision energy to get fragmented. After 40 h of the MA process, however, fine martensitic grains and uniformly distributed oxide particles are observed. This led to a favorable tensile strength and elongation at room temperature and 650oC.

There are many changes appeared with the Chinese degree adverbs as languages evolve over time, such as the emerging degree adverb ‘ju(巨)’ and the phrase structures like ‘巨多’, ‘巨好’, ‘巨痛’ are used in our daily communication commonly. This article discussed about the evolution mechanism of the Chinese emerging degree adverb ‘ju(巨)’s meaning in perspective of cognitive linguistics. First, we focused on the prototype meaning of ‘ju(巨)’ which is a adjective and the existing meaning of ‘ju(巨)’ which is used as a degree adverb. Second, we compared the image schema of the adjective ‘ju(巨)’ with the image schema of the degree adverb ‘ju(巨)’ and managed to find the differences between them. Then we studied the evolution mechanism of the degree adverb ‘ju(巨)’s meaning that is metaphor and made ‘ju(巨)’s metaphor mapping model. Third, we chose ‘巨多’, ‘巨好’ and ‘巨痛’ as examples by corpus-based study and used the conceptual blending theory to compared the conceptual blending spaces of them. Lastly, we found a general rule that can have reference significance to the study about the evolution of the other emerging degree adverbs, such as ‘狂’, ‘神’and so on. 저 자

The Chinese Marriage Law 2001 stipulates two kinds of divorce: registered divorce and litigated divorce. In this paper, the different grounds and procedures related to these two types of divorce will be examined and the judicial statistics and empirical experience about the legal system of grounds for divorce in practice will be explored. Compared to litigated divorce, the easier registered divorce predominates in terms of number. While the sole legal requirement for litigated divorce is that the marriage has broken down irretrievably, this breakdown needs to be evidenced by specific facts. The facts listed in Marriage Law 2001 are mostly fault-based. However, they are not in line with the situation in practice and increase the difficulty of litigated divorce. The legislative reform for the legal grounds for divorce in the Chinese Civil Code (2021) has been undergone in order to strike a balance between protecting people’s autonomy to divorce and assisting people to make divorce decisions.

Nitrogen-doped carbon dots (N-CDs), derived from the biomass (anthocyanin), are the novel additive to the nanocarbon materials, which is expected to bring a wide spectrum of novel applications. Moreover, metallic oxides are emerging for their unique potential for electrocatalysis. Herein, we report the synthesis of N-CDs for the selective detection of Fe3+ with a limit of detection of 2.57 μM in the range of 5–60 μM using ethylenediamine and H2O2 by a hydrothermal method. The obtained N-CDs displayed a spherical morphology with a particle size range of 2–7 nm and emitted blue luminescence at 394 nm under excitation at 319 nm. Meanwhile, we have demonstrated the fabrication of cost-efficient electrocatalysts for oxygen evolution reaction (OER) in an alkaline medium, employing N-CDs. Owing to the successful incorporation of N-CDs into NiO nanospheres, the resulting N-CDs/NiO with large surface areas, fast charge transfer, and increased conductivity vastly improved the catalytic activity. Remarkably, the optimal of N-CDs/NiO composite requires the overpotential of only 380 mV at a current density of 10 mA cm− 2 and a relatively low Tafel slope of 57.96 mV dec− 1 compared with pure NiO. These results open up a facile route for the application of N-CDs and offer prospects for CD-metal hybrids as high OER catalysts in electrochemical energy devices.