Objective To explore the regulatory effect of hypericin targeting Nrf2/HO-1 pathway on pancreatic beta cell function in Type 2 diabetes and its potential molecular mechanism. Methods Induced oxidative damage in rat pancreatic beta cell line RIN-m5F by hydrogen peroxide$\left({{\mathrm{H}}_{2}{\mathrm{O}}_{2}}\right)$, pancreatic beta cells were treated with 0,25,50, and 100$\mu$M hyperoside and ML385 (Nrf2 inhibitor). Real time fluorescence quantitative PCR (RT-qPCR) was used to evaluate Nrf2 and HO-1, protein imprinting was used to detect cleaved-Caspase3 and Caspase3, and glucose stimulated insulin secretion assay, 3-(4,5-dimethyl-2-thiazole)-2,5-diphenyltetrazolium bromide thiazole blue, tetrazolium tetrazolium salt (MTT), flow cytometry, and oxidative stress assay kit were used to detect insulin, cell viability, apoptosis, and oxidative stress in rat pancreatic beta cell line RIN-m5F. Results A certain concentration of hyperoside had no cytotoxic effect on RIN-m5F pancreatic beta cells and increased cell survival rate. Hypericin dose dependently reduced apoptosis rate, reactive oxygen species (ROS), and malondialdehyde (MDA) levels, while increasing catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), and insulin levels. With the dose-dependent increase of hyperoside, the level of cleaved-Caspase3 significantly decreased, the ratio of cleaved-Caspase3/Caspase3 significantly decreased, and the expression levels of Nrf2 and HO-1 significantly increased. After the addition of Nrf2 inhibitor ML385, the overall expression level decreased, with the same trend as before. Hypericin can activate the levels of antioxidant response elements (ARE) and heat shock protein (HSP90 α), indicating that it can initiate the transcription of a series of antioxidant genes and regulate antioxidant responses. Conclusion Hyperin plays a protective role in Type 2 diabetes islet beta cells by activating Nrf2/HO-1/ARE pathway, and improves the function of islet beta cells.

This study will start with the current problems in the safety and management of multi campus university laboratories, and explore new methods and approaches for intelligent management and security system design of laboratories based on the perspective of the Internet of Things. We will use Internet information technology to build a resource sharing, fully open and efficient experimental teaching platform, build a laboratory management system based on the big data era, monitor the whole process before, during and after the experiment through the collection and analysis of data generated by the use and operation of various instruments and equipment, find problems in the experiment in time, carry out targeted guidance, effectively warn laboratory hazards, improve laboratory safety management efficiency, push laboratory management to a higher level, and achieve the win-win effect of talent training, scientific innovation, and safety management.

Objective Therefore, the purpose of this study is to verify and optimize the microbial contamination control strategies during the production of sterile injections to ensure product safety and improve production quality. Methods A randomized trial design was conducted between January 2022 and December 2023, a traditional control strategy between January 2022 and December 2022, and a post-optimized strategy between January 2023 and December 2023. By comparing the microbial pollution under different strategies, combining with the production environment monitoring, process process analysis and operator behavior code assessment, the effectiveness of the control strategy is comprehensively evaluated, and the strategy is optimized. Results The study found that the optimized strategy greatly reduced the risk of microbial contamination and improved production efficiency and product quality. Conclusion The validation and optimized microbial contamination control strategy has significant results in the production of sterile injection, which provides a strong guarantee to ensure the sterility and safety of the injection products. In the future, the production process will be continuously monitored, and the control strategy will be dynamically adjusted according to the actual situation to meet the changing production environment and regulatory requirements.

To explore the limitations of the low air pressure test methods for electronic and electrical products, and to propose ways to optimize and improve the test methods. To analyze the influence of low air pressure environment on the performance, reliability and life of electronic products, and to summarize the important role of low air pressure test in the reliability assessment of electronic products. From the four aspects of test equipment, test conditions, test point arrangement and data processing methods, suggestions are made to improve the low air pressure test methods. For the test equipment, it is proposed to adopt new vacuum pumps, high vacuum chamber materials, optimize the sealing structure, and introduce precise temperature control algorithms; for the test conditions, it is proposed to reasonably select the air pressure value and rate of change according to the product environment, match the temperature conditions, and take into account the test efficiency and failure incentives; for the test point layout, it is proposed to focus on the key devices and weak structures, and adopt suitable wiring materials and direction design; for the data processing method, it is proposed to improve the low air pressure test method. For the data processing method, it is suggested to introduce new methods such as machine learning and signal processing to explore the failure law and performance trend, and focus on the visualization of the analysis results. Strengthening the research on low air pressure test methods is of great significance to enhance the reliability of electronic products and promote their application in rail transportation, aerospace and other fields, which requires the joint efforts of industry, academia and research institutes.

This study aims to explore the specific application of non-destructive testing technology in quality control of pouring molds, in order to improve the accuracy and reliability of mold manufacturing. Mainly using ultrasonic testing technology to detect mold materials, in order to accurately identify defect locations and evaluate material stress distribution. At the same time, infrared thermal imaging technology is used to monitor the temperature distribution and processing parameters of the mold surface, in order to evaluate the surface quality. The research results indicate that non-destructive testing technology has significant advantages in quality control of pouring molds and can effectively improve the level of quality control. I hope that through the research in this article, we can effectively improve the technological level of the mold manufacturing industry and promote its development.

Fluorescence probe technology refers to a technical means of labeling the substance to be measured with fluorescence probe, enabling qualitative and quantitative analysis of the measured substance. Fluoride ion is one of the important trace elements in human body, proper intake of fluoride ion can help prevent tooth decay and osteoporosis, while excessive intake of fluoride ion can cause a variety of diseases. Therefore, it is of great significance to develop fluorescence probes that can detect fluoride ions in organisms. The latest scientific research results were converted into comprehensive designing experiment "the synthesis of fluorescence probe and detection of fluorine ions in aqueous phase". Through the implementation of the experiment, the students' ability of organic synthesis, the operation of optical analytical instruments and the analysis of experimental data will be greatly improved.

Objective To improve temperature check technology for resistance to thermal shock of ceramic cookware products and to enhance the work efficiency. Methods By using different temperature testing tools of infrared thermometer and compact spot finder infrared camera to test resistance to thermal shock of samples, and the experimental steps and results were compared and analyzed. Results For infrared thermometer, manual handheld operation is required to detect the bottom temperature of a sample, which has low safety and poor detection repeatability; For the compact spot finder infrared camera, it can be connected to a computer for automation to detect temperature of sample, which can achieve the temperature visualization, easy to operate, more safety and reliable. Conclusion The experimental data shows that the compact spot finder infrared camera provides safe and reliable technical support for the detection of resistance to thermal shock of ceramic cookware. This experiment provides technical guidance for improving the quality of ceramic cookware products.

With the rapid development of information technology, laboratory information management has become a key means to improve research efficiency and quality. This article delves into the application and significant benefits of laboratory information management in data processing, resource utilization, team collaboration, and research innovation. By implementing electronic data management, online resource scheduling, cross regional collaboration platforms, and advanced data analysis, information management not only improves research efficiency, but also promotes the improvement of research quality and innovation capabilities. The further development of information technology will make laboratory management more efficient, secure, and collaborative, providing strong support for scientific research.

Objective This article mainly introduces three methods for measuring pitting depth: metallographic method, micrometer method and microscopy method, and discusses their differences in different pitting conditions and their influence on the measurement results. Methods Pitting pits on the surface of carbon steel and stainless steel were respectively measured by using these three measuring methods. and the measured results were analyzed and discussed. Results By comparing the measurement results, we can see that the metallographic method is more accurate, but it is destructive. The micrometer method is only suitable for wide and shallow pitting pits. The microscope method is not only suitable for wide and shallow pitting pits, but also for the small pit bottom. Conclusion (1) For wide and shallow pitting pits, metallographic method, micrometer method and microscopic method are applicable and the results are consistent; (2) For the small pitting pit at the bottom, metallography and microscopy are more suitable and the results are consistent; (3) When the corrosion depth is measured by metallographic, microscope and micrometer methods, the thickness reduction caused by uniform corrosion should be taken into account and the results should be corrected, especially in the case of more obvious uniform corrosion.

Objective Exploring the influence of crystal form of ceftriaxone sodium on the quality of ceftriaxone sodium for injection products. Methods Analyze the relationship and reasons between crystal form and product quality by comparing the changes in polymer content of different crystal form products after long-term and accelerated testing. Results There are differences in the quality stability of different crystal forms of ceftriaxone sodium products. Conclusion Production enterprises should pay attention to the production process and choose the optimal crystal form to improve product quality