Central bank digital currency (CBDC) is generally defined as the digital form of a country’s fiat currency. Based on the distributed ledger technology and other financial technology, CBDC could improve the efficiency of domestic and cross-border payments, increase payment safety and soundness, and promote financial inclusion. However, it is argued that the introduction of CBDC would threaten data security and invade personal privacy. Currently, this issue has received growing concern, and some recommendations are proposed by countries or international organizations, like privacy design, restrictions on public authorities and payment intermediaries, and establishing independent supervisory authority. Other suggestions include getting countries involved in international coordination and promoting the formation of unified standards. Among major economies, China is the first to launch CBDC, which is known as e-CNY. Based on an overview of the privacy protection legislation in China, this article attempts to describe the rules that should be followed when dealing with personal data generated in e-CNY circulation.

Amorphous molybdenum sulfide ( MoSx) has been regarded as a promising hydrogen evolution reaction (HER) catalyst due to its mild preparation conditions and low-cost precursor materials. In this work, we report a simple strategy combining the growth of amorphous MoSx on the surface of metal organic frameworks (ZIF-67) and annealing treatment to prepare Co-doped MoSx nanopolyhedrons (denoted as CoMoSx NPs). The CoMoSx NPs exhibit excellent HER activity in acid condition with an overpotential of 188 mV at a current density of 10 mA cm− 2 (η10), and a relatively stable overpotential after 2000 cyclic voltammetry (CV) cycles testing. The excellent HER performance of the CoMoSx NPs can be attributed to the doping of Co element adjust the electronic structure and increase the conductivity of catalyst, and the nanopolyhedrons structure which can expose more active sites for HER electrocatalytic. This study offers a low-cost and simple strategy to prepare high-activity HER catalyst, which holds great promises in developing advanced electrocatalysts for energy storage.

Biomass carbon materials with high rate capacity have great potential to boost supercapacitors with cost effective, fast charging– discharging performance and high safety requirements, yet currently suffers from a lack of targeted preparation methods. Here we propose a facile FeCl3 assisted hydrothermal carbonization strategy to prepare ultra-high rate biomass carbon from apple residues (ARs). In the preparation process, ARs were first hydrothermally carbonized into a porous precursor which embedded by Fe species, and then synchronously graphitized and activated to form biocarbon with a large special surface area (2159.3 m2 g− 1) and high degree of graphitization. The material exhibited a considerable specific capacitance of 297.5 F g− 1 at 0.5 A g− 1 and outstanding capacitance retention of 85.7% at 10 A g− 1 in 6 M KOH, and moreover, achieved an energy density of 16.2 Wh kg− 1 with the power density of 350.3 W kg− 1. After 8000 cycles, an initial capacitance of 95.2% was maintained. Our findings provide a new idea for boosting the rate capacity of carbon-based electrode materials.

To solve the problem of water pollution, researchers have proposed a photocatalytic degradation technology, in which the key factor is the development of efficient photocatalytic materials. Graphitic carbon nitride (g-C3N4), an n-type semiconductor, has been widely studied due to its suitable band gap (2.7 eV), low cost, easy preparation, non-toxicity, and high photostability. However, the pure-phase g-C3N4 still has defects such as low specific surface area, insufficient visible light absorption, low charge mobility, few active sites for interfacial reaction, and easy recombination of photogenerated electron–hole pairs, which leads to the lower photocatalytic activity of g-C3N4. Aiming at the problems mentioned above, this paper focus on the synthesis of g-C3N4-based composites with high photocatalytic activity via lemon juice induction method. Thiourea and lemon juice were selected as precursors, and carbon quantum dots (CQDs) as electron mediators were introduced anchoring on the surface of g-C3N4 to build g-C3N4/CQDs with compact interface. The results showed that small-sized CQDs are uniformly distributed on the surface of g-C3N4, and the g-C3N4/CQDs composite has a 2D0D structure, which reduces the recombination of photogenerated electron–hole pairs. The photocatalytic degradation efficiency of 4% g-C3N4/CQDs for RhB reaches the highest data of 90.9%, and the photocatalytic degradation rate is 0.016 min− 1, which is about 2.3 times that of g-C3N4. After four cycles of photocatalytic reaction, the photocatalytic degradation efficiency of the material remained at 81.7%. Therefore, the g-C3N4/CQDs synthesized via lemon juice induction has a more stable microstructure, and the charge separation efficiency is greatly improved, which is suitable for practical photocatalytic environmental protection.

Soybean straw (SS)-based activated carbon was employed as a precursor to prepare carbon molecular sieves (CMSs) via chemical vapor deposition (CVD) technique using methane as carbon source. Prior to the CVD process, SS was activated by 0.5 wt% ZnCl2, followed by a carbonization at 500°C for 1 h in N2 atmosphere. N2 (77 K) adsorption-desorption and CO2 (273 K) adsorption tests were carried out to analyze the pore structure of the prepared CMSs. The results show that increasing the deposition temperature, time or methane flow rate leads the decrease in N2 adsorption capacity, micropore volume and average pore diameter of CMSs. The adsorption selectivity coefficient of CO2/CH4 achieves as high as 20.8 over CMSs obtained under the methane flow rate of 30 mL min–1 at 800°C for 70 min. The study demonstrates the prepared CMSs are a candidate adsorbent for CO2/CH4 separation.

In this paper, the in vitro biocompatibility of graphene film (GF) with osteoblasts was evaluated through cell adhesion, viability, alkaline phosphatase activity, F-actin and vinculin expressions, versus graphite paper as a reference material. The results showed that MG-63 cells exhibited stronger cell adhesion, better proliferation and viability on GF, and osteoblasts cultured on GF exhibited vinculin expression throughout the cell body. The rougher and wrinkled surface morphology, higher elastic modulus and easy out-of-plane deformation associated with GF were considered to promote cell adhesion. Also, the biomineralization of GF was assessed by soaking in simulated body fluid, and the GF exhibited enhanced mineralization ability in terms of mineral deposition, which almost pervaded the entire GF surface. Our results suggest that graphene promotes cell adhesion, activity and the formation of bonelike apatite. This research is expected to facilitate a better understanding of graphene-cell interactions and potential applications of graphene as a promising toughening nanofiller in bioceramics used in load-bearing implants.

In the past few years, the Chinese government has put the internationalization of CNY on the map. Besides regular reforms such as facilitating CNY trading settlement and relaxing capital accounts, China deployed the Pilot Free Trade Zone and the One Belt One Road policy to significantly expand investment channels for CNY. It was also considered as a response to the criticism of CNY’s trade-driven model. CNY was developing from a trade currency to an investment currency and now has the potential to be a global reserve currency. The growth of CNY as an international currency could counterbalance the US dollardominated system and contribute to regional and international financial constancy. However, CNY internationalization is a double-edged sword. Inflow surges or disruptive outflows of capitals can give rise to macroeconomic fluctuation. With regard to the potential risks, it is suggested that Chinese authorities adopt more market-based measures and make the best of the international arrangements to protect the domestic financial integrity and stability.

On June 18, 2014, the WTO’s Dispute Settlement Body adopted the Panel report on China – Anti-Dumping and Countervailing Duties on Certain Automobiles from the United States case. There are questions that are still left open or ambiguous, and some notable findings have been introduced. For the procedure, the major issues are whether the non-confidential summaries of data were sufficient to reasonably understand the information, the admissibility of the delayed letter from parties and whether the notice and registration of Investigation Authorities could justify the facts available for determination of Residual rates. As regards the substantive issues, the discussion focuses on whether there is a self-selection process to distort the domestic industry definition and the price comparability between subject imports and the domestic like product. By analyzing the arguments, evidences and reasoning in these regards, this review points out questions that still need future clarification.

During the past few years, the Bank of Japan has injected billions of yen into the economy and pursued a monetary easing policy. Japan has plausible arguments, namely that its current policies are needed to support the growth of the economy and to spur inflation. However, these measures result in a weakened yen and increase trade imbalances between Japan and other Asian countries, particularly China. This article argues that Japan’s practice is rooted in protectionism and examines such actions under the IMF Agreement and the WTO system. It is suggested that the Chinese government should adopt diplomatic and judicial approaches to urge Japan to return to normal monetary policies.

By selecting rural residential houses of Jiaozuo region as the research object, paper analyzes local residential houses' origin, formation and development. Base on searching literature study, field research, and summarizing the previous analysis methods, firstly, describe the form of rural residential houses in Jiaozuo region; secondly, analyses the causes of architectural evolution; lastly, summarizes the evolution laws. Then combined with related domestic and abroad instance, paper is to propose reasonable advice and strategies for preservation and update the rural residential houses in Jiaozuo.

By selecting rural residential houses of Jiaozuo region as the research object，paper analyzes local residential houses’ origin, formation and development. Base on searching literature study, field research, and summarizing the previous analysis methods, firstly, describe the form of rural residential houses in Jiaozuo region; secondly, analyses the causes of architectural evolution; lastly, summarizes the evolution laws. Then combined with related domestic and abroad instance, paper is to propose reasonable advice and strategies for preservation and update the rural residential houses in Jiaozuo.

Lentinula edodes is an important cultivated mushroom in China. The development of Lentinula edodes production promotes more studies on it. In our previous work, degenerate PCR and chromosome walking technologies were used to obtain one pheromone receptor gene and one pheromone precursor gene from Lentinula edodes. In this study, four pairs of specific primers were designed according to the whole genome sequencing of the protoplast monokaryon of Lentinula edodes strain 135, to amplify STE3-like pheromone receptor gene and its flanking conserved genes in the protoplast monokaryon strain SUP2 derived from Lentinula edodes strain Suxiang and 33655bp DNA sequence was obtained. By BlastX search, seven putative genes were identified, and three of them are pheromone receptor encoded genes. Furthermore, near to two pheromone receptor genes, four genes encoding proteins with conserved motifs of pheromone precursors were found. This study firstly reveals the molecular organization of the B mating type locus of Lentinula edodes.

Ingestion of plant secondary metabolites (PSMs) presents a major challenge to mammalian herbivores. We investigated the relationship between PSM concentrations in the diet and feeding patterns in sheep fed diet containing flavone extracted from Apocynum venetum. Results showed that the flavone concentrations significantly influenced food intake by sheep. With the concentration of flavone in diet increase, sheep can regulate their intake of PSM within limits that are tolerable.

In recent years, electronic products have played an increasingly important role in modern society and have penetrated into people’s life and work. With the continuous development of technology and the increasing demand for convenience and innovation, the functions and performance of electronic products continue to improve. However, the intensification of market competition and the rapid advancement of technological progress have brought many challenges and opportunities to the field of electronic products. This paper takes the new product development project management process of Lenovo Company as the research object, adopts investigation analysis method, literature analysis method and project management theory and gateway development management theory to deeply analyze the existing problems in the new product development project management of Lenovo Company, such as: The new product development cycle is long, the new product development cost is over budget, the new product development project organization and coordination ability is weak, and the project monitoring and feedback are not timely. The causes of these problems are analyzed. In view of the existing problems, this paper makes an in-depth study of the relevant theories of project management and new product development, and puts forward an optimization scheme suitable for the improvement of the new product development project management of Lenovo Company. It means adopting agile development scheme, establishing project development cost control point, optimizing organizational structure, and establishing perfect project management supervision and feedback mechanism. Finally, based on the current situation of Lenovo ‘s new product development, this paper proposes the guarantee measures for the smooth implementation of the new product development project management optimization plan, namely, talent guarantee, development and innovation awareness, risk control awareness, and management awareness in strengthening cultural construction, so as to ensure the smooth implementation of new product development project management.

With the rapid development of society and the wide application of information network technology, we have entered the era of new media, and more and more schools have opened the course of "New Media Marketing", trying to better fit the new media with the marketing profession in order to meet the needs of a diversified society and cultivate high-quality talents. This article lists the teaching examples of online plus offline plus practice during the COVID-19 epidemic, and examines the current situation, the main problems faced and the solutions of the blended teaching practice of the New Media Marketing Course in the context of the actual situation of university teaching.

In the era of network media, the outbreak of network social emotions will lead to the tearing and out of control situation of network public opinion ecology, resulting in the occurrence of public crisis. With the development of network media technology, we can deeply understand the social mentality of public events through the analysis and management of public network behavior. Grass roots governance is the basis of social governance. Urban community governance and rural village governance belong to the category of community governance. In the city, the community is the unit cell of social governance. The large-scale Internet platform has linked people, money, materials, and information related to personal life together. It not only provides solutions for the public's life problems but also provides a new digital social governance model. The modernization of community governance at the grassroots level also means reshaping the interpersonal relationship and power structure of the community, focusing on highlighting the subjectivity of the community residents and enhancing the emotional identity of the community. This paper puts forward the analysis framework of social public psychology and behavior in the face of public events, based on the management of public emotions reflected in the network media, to improve the modernization level of community governance and the ability to deal with public events

In the information age, the relationship between customers and companies is not just about the relationship between consumers and products provided. In the online shopping context, customers are connected to the companies through the Internet before and after the purchase. The concept of "customer engagement" is also formed during the process. In short, customer engagement is the connection that an enterprise establishes with customers through marketing activities. Specifically, customer engagement refers to a series of transactions or non-dealing behaviors of the enterprise, including the interaction between enterprise and the customer, customer's participation behavior and other related behavior, which affects the customer's enthusiasm, social interaction, and conscious participation. Based on the emerging concept of customer engagement, this research keeps up with latest dynamics of online environment and tries to explore the role of customer engagement in the context of social media. Since there are a variety of social media platforms existing, we choose one of the most popular social media platforms in China, WeChat, to investigate the impact of customer engagement on brand loyalty to help companies improve customer's brand loyalty through social media marketing.