Search

Dans le domaine de la traduction français-chinois, pouvoir est reconstruit non seulement par les verbes modaux, mais également par une multiplicité de formes linguistiques de la langue chinoise. Or, sont-ils vraiment équivalents ? En nous inscrivant dans l’approche de Halliday, nous étudions via le discours autobiographique de Rousseau la traduction du verbe modal pouvoir en chinois afin d’examiner s’il y a un déplacement sémantique qui se produit lors de la traduction. Cet article reste centré sur le paramètre d’orientation modale qui est une des causes la plus importante qui est à l’origine de ce déplacement. Le résultat de notre analyse montre que le déplacement d’orientation modale est un phénomène fréquent dans la traduction de pouvoir du français en chinois, qui est strictement lié à l’intention de communication du traducteur.

The Longitudinal modification technology has been the most promising method to improve transmission performance and suppress vibration and noise. The mesh stiffness and longitudinal load distribution are primary parameters to evaluate the effect of modification. By using the finite element quasi-static analysis principle,the mesh stiffness and longitudinal load distribution of modification gears in the different modifications are calculated quantitatively according to the influence of installation errors. The effects of tooth profile correction amount and installation errors on mesh stiffness and longitudinal load distribution analysis are obtained. These analysis results show that the mesh stiffness is increased and the longitudinal load distribution caused by the shaft nonparallelsm is reduced. Meanwhile,at a given installation errors,there is the best range of the tooth profile correction amount,when deviating this range,the transmission performance goes worse.

The diffusible hydrogen in steel weldments is one of the main reasons that led to hydrogen assisted cracking. In this paper, the results of literatures survey and preliminary tests of the diffusible hydrogen in underwater wet welding joint were presented. A fluid-discharge method of for measuring the diffusible hydrogen in weldment was introduced in detail. Two kinds of underwater welding electrode diffusible hydrogen are 26.5 mL/100g and 35.5 mL/100g by fluid-discharge method, which are high levels. The diffusible hydrogen of underwater welding is higher than atmospheric welding, and the result is closely related to welding material. The best way to control the diffusible hydrogen is adjusting welding material and improving fluidity of slag.

Antimony sulfide (Sb2S3) is a common and practical metal sulfide, and photocatalysis with metal sulfide is a viable solution for addressing significant water pollution issues. Simple chemical vapor deposition (CVD) method was used to successfully produce Sb2S3 tubes for photocatalysis in this research. XRD, EDS, SEM, TEM, HRTEM, SAED, XPS and UV–Vis were used to examine the crystal structure, composition, morphology, and optical properties of the products. The photocatalytic activity of the Sb2S3 tubes was tested using a xenon lamp to simulate sunshine, methyl orange (MO) as a target degradation substance, and tetracycline hydrochloride (HTC) as a degradation substance. The results reveal that under xenon lamp illumination, the constructed Sb2S3 tubes has an excellent photocatalytic degradation rate for MO. The photocatalytic degradation rate of MO reaches 98.4% after 4 h, indicating good cycle performance, after five cycles, the degradation rate is 86.4%. During photocatalytic degradation, Sb2S3 was corroded and antimony oxide (Sb2O3) was formed. Sb2O3 on antimony Sb2S3 forms a Sb2S3/Sb2O3 heterojunction, which speeds up the reaction rate and improves cycling stability. [ABSTRACT FROM AUTHOR]

Huge amounts of Au and Ag are recovered from the hazardous waste lead anode slime. The conventional extraction of precious metals from lead anode slime is based on pyrometallurgical and electrolytic processes, which are seriously conditioned by the separation of harmful elements As and Sb. In this paper, an innovative and efficient oxidation–vacuum volatilization–carbon reduction process was proposed to separate and enrich Ag and Au from lead anode slime. Before vacuum volatilization, selective oxidation of the lead anode slime was performed. Then, vacuum volatilization and vacuum carbon reduction were used to obtain a gold- and silver-rich alloy. The feasibility of the process was verified experimentally and theoretically. The effects of temperature and time on vacuum volatilization separation and reduction enrichment were investigated. The experimental results showed that the Ag content in the resulting gold- and silver-rich alloy was as high as 67.58%, Au was as high as 4287 g/t, and the efficiencies for the recovery of Ag and Au from the lead anode slime were 99.25% and 99.91%, respectively. The gold- and silver-rich alloy can be directly used to produce Ag ingots. Moreover, no gas or wastewater was discharged in this process, so Ag and Au were recovered in a sustainable and cleaner manner. [ABSTRACT FROM AUTHOR]

Nuclear-grade zirconium and hafnium play an essential role in the nuclear industry. It is difficult to separate and purify zirconium and hafnium because of the similar properties caused by lanthanide shrinkage and the preferential extraction of hafnium is challenging. In this work, a new extractant, di(p-tert-butylphenyl)phosphate (DTBPPA), was synthesized, and its separation performance of zirconium and hafnium in the sulfuric acid system was evaluated. Under identical extraction conditions, DTBPPA shows excellent preferential extraction properties for hafnium compared to current commercial extractants, such as D2EHPA and PC88A. The highest SFHf/Zr value is up to 16.3. A crystal of the hafnium extracted species was grown to study the extraction mechanism and the principle of preferential extraction of hafnium. It was found that the crystal growth of zirconium-extracted species was difficult under the same conditions. Hafnium extracted species crystals reveal a six-coordinated hafnium ion bound to six extractant molecules. The electron withdrawing effect of the aromatic substituents results in a low electron density of O atoms in the P–O group of the new extractant, and the extractant coordination group shows the characteristics of a soft base. This matches the soft acid properties of hafnium ions. DTBPPA shows a solid ability to identify hafnium ions, thus achieving preferential separation of hafnium from zirconium and hafnium mixtures. [ABSTRACT FROM AUTHOR]