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Purposes Electrochemically switched ion exchange (ESIX) is a novel technology for selective ion separation and recovery, which can be utilized for lithium extraction from salt lakes. In particular, the interfacial bonding behavior between the current collector and the electroactive composite film has an important influence on the electrochemical performance of the composite film. Methods Titanium and carbon-based composite film electrodes were prepared by using titanium plate and graphite plate as current collectors, respectively, with LiMn2O4 as electroactive Li-ion exchange material. The interfacial bonding behavior between the current collector and the composite film was discussed by adhesion test, and the electrochemical performance of different composite film electrodes were analyzed by cyclic voltammetry, AC impedance, and galvanostatic charge-discharge tests. Findings The results show that the adhesion strength between graphite plate and composite film (1.33 N/cm) is about twice that between titanium plate and composite film (0.71 N/cm), and the carbon-based composite film electrode exhibits better electrochemical performance. In addition, the carbon-based composite film electrode has better lithium extraction performance during 10 consecutive ESIX processes. The above results are attributed to the more sufficient adhesion between the graphite plate and the composite film, which leads to better interfacial conductivity, thereby enhancing the electroactivity and cycle stability of the composite film electrode. However, the oxide film formed on the surface of the titanium plate after multiple redox will produce a large interface resistance, thus weakening the conductivity of the titanium plate.

The control of diamond film growth is crucial for the application of diamond films. In this article, different diamond film samples were prepared by adding nitrogen and oxygen in different proportions during the growth process. The key conditions for controlling the growth of diamond film with preferred orientation were obtained using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy characterizations. During the growth process, the growth of the diamond film with (100) preferred orientation could be achieved by adjusting nitrogen content. It was necessary to introduce nitrogen and oxygen in the growth process, and precisely regulate the ratio of the two to obtain the (111) preferred orientation of the diamond film. When only oxygen was introduced during growth, the preferred orientation of the diamond could not be achieved, leading to a smaller grain size and poorer crystal quality. From the perspective of grain morphology to film morphology evolution, this study obtained the crystal orientation control conditions during the diamond film growth, which has important guiding significance for the application of the diamond film. This study seeks to drive progress in the large-scale growth of readily machinable diamond and the evolution of diamond-grain optical fiber sensing through comprehensive investigations into the correlation between the preferred orientation in polycrystalline diamonds and reaction conditions.

The high frequency H-diamond metal-oxide-semiconductor field effect transistors (MOSFETs) were fabricated on single diamond substrate using 300°C ALD grown Al2O3 as gate dielectric and passivation layer. The devices gate length, gate/drain spacing and dielectric thickness are 100 nm, 2 μm, and 10 nm, respectively. The direct-current and frequency characteristics were investigated. The device shows a maximum saturation drain current of −492.6 mA/mm and gm of 135.2 mS/mm. The device shows good high temperature working performance, and the maximum saturation drain current only has a little decreasing of 7.6%. at 200°C. In addition, the device exhibits a maximum cut-off frequency of 36.2 GHz and maximum oscillation frequency of 70.5 GHz. The transient drain current response measurement indicates that the drain current can follow the changing of gate voltage at the frequency of 1 MHz. These results indicate that the Al2O3 dielectric is suitable for using in high frequency or the high-speed switching devices.

This research investigates the impact of corporate social responsibility (CSR) policies on employee organizational citizenship behavior and business reputation within the travel and tourism sector. Through a comprehensive survey of 317 participants in tourism companies, the study employs Amos 25.0 and SPSS 25.0 software to construct a Hypothesis Testing Structural Equation Model, aligning with established methodologies. The results unequivocally demonstrate that CSR practices enhance a company’s reputation, subsequently fostering organizational citizenship behavior among employees. Notably, the intricate interplay among CSR policies, company reputation, and employee behavior is subject to moderation by specific factors. The findings underscore the nuanced dynamics shaping organizational behavior in the context of CSR initiatives. The study suggests potential avenues for future research, offering insights that contribute to both theoretical understanding and practical implications for businesses in the travel and tourism sector. This research advances our comprehension of the intricate relationships between CSR, business reputation, and employee behavior, providing a foundation for informed decision-making in corporate sustainability efforts.

As sound therapy, Songbo Sound Therapy is widely used around the world for the treatment of sleep disorders and physiotherapy. Therefore, it is of great significance to explore consumers’ willingness to purchase Songbo Bowl products and their influencing factors to enhance consumers’ willingness to purchase and to promote the high-quality development of China’s sound therapy instrument industry. The empirical results show that among the four dimensions affecting consumers’ willingness to buy, consumers’ price sensitivity, awareness and trust significantly affect consumers’ willingness to buy, and consumers’ perceived value is also a factor affecting willingness to buy. From the study of the four dimensions of willingness to buy, this paper finds that young people in faster-developing cities have a higher demand for Songbo products used to alleviate insomnia and other diseases, and at the same time, sound therapy is included in the national health insurance for the first time in 2022, which indicates that the sound therapy products have gone to the public. Targeted countermeasures and recommendations from the government level. The government should increase the publicity and promotion of sound therapy products, enhance consumer awareness and health consciousness, and establish a sound product feedback system and regulatory mechanism.

Background: There is considerable evidence on the benefits of endovascular thrombectomy (EVT) for acute ischemic stroke (AIS) within 6 h after symptom onset. However, uncertainties remain regarding EVT efficacy beyond 6 h after symptom onset. We undertook a meta-analysis to assess the efficacy and safety of EVT in patients with AIS >6 h after symptom onset.Methods: We searched PubMed, EMBASE, and Chinese Biomedical through July 2019. We included studies involving early (≤6 h) vs. delayed (>6 h) EVT in selected patients with AIS, based on radiological evaluation criteria. Functional independence, successful recanalization, mortality, and symptomatic intracranial hemorrhage (sICH) rates were assessed.Results: Eight articles, with 3,265 patients who had undergone early EVT and 1,078 patients who had received delayed EVT, were included in the meta-analysis. Patients treated with early EVT showed a similar proportion of functional independence at 90 days [odds ratio (OR) = 1.14, 95% confidence interval (CI) = 0.926–1.397, P = 0.219; I2 = 36.2%, P = 0.128] as those treated with delayed EVT. Delayed EVT was also associated with no significant difference in mortality (OR = 1.015, 95% CI = 0.852–1.209; P = 0.871; I2 = 0.0%, P = 0.527), successful recanalization (OR = 1.255, 95% CI = 0.923–1.705; P = 0.147; I2 = 60.5%, P = 0.009), and sICH (OR = 0.976, 95% CI = 0.737–1.293; P = 0.871; I2 = 0.0%, P = 0.742) rates compared with early EVT.Conclusions: Among selected patients with AIS, delayed EVT showed comparable outcomes in functional independence, recanalization, mortality, and sICH rates compared with early EVT.

In order to study on the fatigue behaviour of expansion anchor (M16, grade 8.8) for overhead contact system in electrification railways, a set of safe, practical loading device is designed and a fatigue test campaign was carried out at structural laboratory of China Academy of Building Research on expansion anchor embedded in concrete block. The mobile frame of the loading device was designed well by finite-element simulation. According to some fatigue performance test of expansion anchor with different size and form, the device have been assessed experimentally its dependability. The results were found that no fatigue damage phenomenon occurred in all specimens after 2×106 cycles tensile fatigue test in this specific series. It shows that in the condition of medium level or slightly lower maximum stress limit and nominal stress range, expansion bolt has good fatigue resistance. The biggest relative displacement and the residual relative displacement after test (Δδ = δ2-δ1) was also strongly lower than the symbol of the fatigue test failure index of this specific series (0.5mm) in the high cycle fatigue regime. The ultimate tension failures mode after fatigue tests in all tested samples take place in the concrete anchorage zone. The reduction range of the ultimate tensile strength properties of the anchorage system was not obvious, and the concrete was seen to be the weakest link of the system.

CuO/F-TiO2 nanoparticle photocatalyst was prepared by ball milling. The photocatalyst was characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy, and photoluminescence emission spectroscopy. The photocatalytic activity was evaluated by photocatalytic oxidation of rhodamine B and reduction of Cr2O7 2−. The results showed that, for F-TiO2 photocatalyst, the photooxidation activity increases remarkably with the increasing amount of NH4F up to 1.0 g, and the photoreduction activity decreases gradually with the increase in the amounts of NH4F. For the CuO/F-TiO2 photocatalyst, the photoreduction activity increases greatly with the increase in the amount of doped p-CuO up to 1.0 wt.%, and the photooxidation activity decreases rapidly with the increase in the amounts of doped p-CuO. Compared with pure TiO2, the photoabsorption wavelength range of the CuO/F-TiO2 and F-TiO2 photocatalysts red shifts and improves the utilization of the total spectrum. The effect of ball milling time on the photocatalytic activity of the photocatalysts was also investigated. The mechanisms of influence on the photocatalytic activity of the photocatalysts were also discussed.