Corrosion has caused serious damage to our society, lives and environments. Although the corrosion of metals and their alloys was inevitable, it was controllable using the certain protection method. Using corrosion inhibitors was a feasible strategy to protect metals and alloys from corrosion. Traditional inorganic and organic inhibitors were toxic and expensive. Growing ecological awareness and economic challenges prompted people to look for cheap, efficient, safe and nontoxic green corrosion inhibitors. In this review, the related researches of nitrogen-containing heterocyclic compounds (NCHCs) and carbon dots (CDs) as green corrosion inhibitors were summarized. The chemical compositions of several nitrogen-containing heterocyclic compounds (NCHCs) and carbon dots (CDs) and their corrosion inhibition efficiency in aggressive solutions are reviewed. The corrosion inhibition mechanisms of these environmental friendly corrosion inhibitors on metal surfaces were discussed in detail. This review briefly introduced the corrosion determination method, and expounded the application of surface analysis technology and computational chemistry tools in understanding the anti-corrosion mechanism of green and efficient corrosion inhibitors.

In the process of globalization, the English language not only represents British and American culture, but it has also gradually become a language used all over the world, and it has become essential for many people to learn it as a second language. Education is the century business of a nation. At the same time, to meet the needs of E generation, I generation, and touch-screen generation students, teachers are increasingly undertaking multimedia-integrated curriculum design and instruction. Teachers are no longer knowledge providers, but they are expected to provide students with a personalized learning model and guide and support them in a timely manner. This study included a sample of business students from Guilin University of technology. A total of 216 students participated in a 16-week (3 h per week, a total of 48 h) course of experimental teaching. The research results showed that 1. multimedia assisted, song integrated English teaching affected learning interest, 2. That multimedia assisted, song integrated English teaching affected learning outcomes, and 3. That learning interest had significantly positive effects on learning outcome. Based on these results, this study contributes to improving college students' English listening, speaking, reading, and writing skills via multimedia teaching, which also facilitated their interest and ability to achieve the learning outcomes.

Metformin is widely used in the treatment of type 2 diabetes (T2D) and plays a role in antitumor and antiobesity processes. A recent study identified its direct molecular target, PEN2 (PSENEN). PSENEN is the minimal subunit of the multiprotein complex γ-secretase, which promotes the differentiation of oligodendrocyte progenitors into astrocytes in the central nervous system. This study was mainly based on gene expression data and clinical data from the TCGA and CGGA databases. Analysis of differential expression of PSENEN between tissues from 31 cancers and paracancerous tissues revealed that it had high expression levels in most cancers except 2 cancers. Using univariate Cox regression analysis and Kaplan-Meier survival analysis, a high expression level of PSENEN was shown to be a risk factor in low-grade gliomas (LGG). Gene ontology (GO) and kyoto encyclopedia of genes and genomes (KEGG) analyses indicated that PSENEN is widely involved in immune-related signaling pathways in LGG. PSENEN expression level was significantly associated with TMB, MSI, tumor stemness index, and the expression levels of immunomodulatory genes in LGG. Finally, immune infiltration analysis revealed that PSENEN level was associated with the presence of various immune infiltrating cells, among which PSENEN was strongly associated with the presence of M2 macrophages and played a synergistic pro-cancer role. In conclusion, PSENEN may partially influence prognosis by modulating immune infiltration in patients with LGG, and PSENEN may be a candidate prognostic biomarker for determining prognosis associated with immune infiltration in LGG.

Antimonene/carbon fabricated through electrochemical exfoliation in a Na₂SO₄ and ethylene glycol mixed solution exhibits selective lubrication and extraordinary sodium–ion storage performance.

The fierce competition among industries and the rapid environment changes have health care companies not only face the competitive prices of products but also bear the pressure of shortening product life cycle. Looking back the barter time before, there was not customer service. With the time and space changes, customer service is constantly enhanced along with the economic development. In the service era, a business should complete the service value from the aspect of customer to achieve the goal of customer satisfaction, actively understand customers’ real needs, and provide products and services required for customers in order to create higher service value for customers. Taking the employees of health care industry in Shanghai City as the research object, questionnaire survey is used for collecting relevant data. With statistical analyses, the following research conclusions are summarized: (1) Service innovation shows significantly positive correlations with customer value; (2) Customer value reveals remarkably positive correlations with customer satisfaction; (3) Service innovation reveals notably positive correlations with customer satisfaction. Reference for health care industry making operation policies is provided in this study. By strengthening customer value and customer satisfaction, it is expected to enhance customer loyalty and create the niche for the sustainable management of health care industry.