With the increasing prosperity of the toy market, children are exposed to a wide variety of toys, but the hidden harmful chemical substances can not be ignored. The purpose of this paper is to focus on the analysis of common toxic and harmful substances in the toy manufacturing process, through technological innovation and application, the improvement of standards and regulations and other measures to ensure that the toy market products are safe and harmless, protect children from harmful substances, provide scientific basis and practical guidance for government regulators, manufacturers and consumers, and promote the healthy development of the toy industry. Protect children's right to healthy growth.

In recent years, with the increasing concern of the public regarding drug safety, the detection capabilities of drug inspection systems have been continuously improving. There has been an explosive growth in the number of drug inspection equipment, which poses new challenges for equipment quality management. Currently, there are some issues in the equipment quality management of drug inspection units. This article analyzes the problems existing in the equipment quality management of drug inspection units and proposes corresponding improvement suggestions and measures. The aim is to provide scientific and effective management approaches for the equipment quality management of drug inspection departments, and to collectively strive for improved efficiency in drug inspection equipment quality management.

In view of the problems of laborious personnel management, difficult object control and inadequate infrastructure conditions in the safety work of university laboratories, and based on the construction concept of "harmonious and safe campus", and combined with the current situation of safety management in the material laboratories of our college, we propose to comprehensively promote the informatization of laboratory safety management in four aspects: laboratory safety education, open booking of laboratories and equipment, purchase and supervision of hazardous chemicals, and laboratory safety risk assessment. By using information technology to reduce unsafe human behaviour, eliminate unstable physical conditions and make up for shortcomings in infrastructure construction, we provide new solutions to the difficulties of laboratory safety management.

In EMC (Electromagnetic Compatibility) testing, radiation testing occupies an important position and has significant influence. Based on the requirements of relevant job positions in enterprises for EMC test engineers, we conducted two rounds of lectures to sort out, research, and think and analyze, and developed a small and economical radiation disturbance test training platform. On the one hand, it avoids the high cost of dark room construction and the shortage of space, and on the other hand, it fills the gap in radiation interference testing teaching and helps students prepare for entering enterprises, helping them better adapt to the needs of enterprise job positions. This paper aims to develop a small and economical radiation interference test training platform, mainly explaining the development process from two aspects of key equipment and system design and construction to meet the needs of teaching and research, and also has guiding value for actual engineering applications.

The comprehensive scientific research experimental platform of university affiliated hospitals integrates medical treatment, scientific research and teaching, which is the pioneer field of medical research and the core element of scientific and technological innovation system. This paper aims to analyze the current situation and dilemma of safety management of scientific research experimental platform, combined with national policies, take the affiliated hospital of Youjiang Medical University for Nationalities as an example, and introduce the practical experience of safety management of comprehensive scientific research platform in affiliated hospitals of universities. It includes comprehensively strengthening the safety awareness of scientific research personnel, comprehensively improving the safety management system and process, rationally planning the construction layout of scientific research platform, and enabling scientific research platform safety management, etc., providing a referable safety management mode of scientific research platform for affiliated hospitals of universities.

The safety of university laboratories is a fundamental guarantee for promoting the continuous development of education and scientific research, and for teachers and students to carry out work and study smoothly. In China's vigorous promotion of the construction of "Double First Class” universities, the existing management methods and personnel configuration are unable to meet the current national requirements for laboratory safety management in universities. Building a scientific, comprehensive, practical, and easy-to-use laboratory safety management platform is an important issue that universities urgently need to study and solve. This article analyzes the necessity of building a laboratory safety management platform in universities under the current information technology background. Based on the actual work of Xinjiang University, a laboratory safety management system construction plan is proposed, and the system operation effect is analyzed to achieve systematic and intelligent management of the laboratory. It has played a positive role in supporting the cultivation of innovative talents and standardizing laboratory management, and has achieved certain results.

Objective To establish a specific, reliable and accurate quality control method to improve the quality standard of Anwei Granules. Methods The chromatography system, temperature and humidity of different reagents were investigated by silica gel thin layer chromatography (TLC) to optimize the thin layer identification of Coptidis rhizoma, Radix salviae miltiorrhizae and Linderae Radix. The content of total alkaloids in the preparation was determined by UV-Vis. Results The development system of Coptidis rhizoma was determined to be n-butanol-acetic acid-water (7 : 2.5 : 2), the development system of Radix salviae miltiorrhizae was toluene-trichloromethane-ethyl acetate-methanol-formic acid$\left({2 : 3 : 4 :{0.5}: 2}\right)$, and the development system of Linderae Radix was trichloromethane-ethyl acetate-formic acid$\left({4 : 3 :{0.2}}\right)$. The negative results of the three drugs were not interfered. The total alkaloid content was${4.8328}\mathrm{{mg}}/\mathrm{g}$and RSD% was 1.83% by UV-Vis assay. Conclusion In this study, an effective method for improving the quality standard of Anwei Granules was established, which has the characteristics of good repeatability and strong specificity.

Objective The structure and composition of Shoushan tianhuang were determined, and in order to understand the reason why field-yellow stone is different from other varieties of koreite. Methods It’s structure was observed by microscope and scanning electron microscope, and it’s chemical composition was analyzed by near infrared spectrometer, X-ray powder diffractometer and ICP-MS. Results By scanning electron microscopy, it was found that the crystal structure of fShoushan tianhuang is aphanocrystalline, the crystal is lamellar, the particle size is uneven, the overall orientation is poor, there is idiomorphic or hemidiomorphic pyrite and the particle boundary is clear. Comparing and analyzing the data, it is found that$\mathrm{{Cr}}$element is stable and there are three kinds of mineral composition in Shoushan tianhuang: illite is the main mineral. The main mineral is the dickite and the secondary mineral is the illite. The main minerals are dickite and kaolinite. Conclusion The analysis of structure and chemical composition of Shoushan tianhuang is of great value for identifying varieties of koreite and distinguishing different mining areas, and also provides important data support for understanding the production state and particularity of Shoushan tianhuang.

Objective The relationship between fitness and single nucleotide gene polymorphism of Yersinia pestis was investigated. Methods In this paper, the mechanism of GTG in competition between different strains was revealed through continuous in vitro co-incubation competition and in vitro static competition. Results With the increase of passage times, GTG strain quickly became the absolute dominant strain and showed competitive adaptability. Under different stresses (Asp deficiency, weak acid and high salt), GTG and TTG strains showed more remarkable adaptability. In the competitive survival test of macrophages, the ratio of GTG strains to TTG strains did not change significantly. In the intracellular competitive amplification product experiment, mice with GTG: TTG=10: 1, the average dose exceeded the theoretical value during the administration process, resulting in early death of the mice. Conclusion GTG has competitive adaptability among different strains. There was no significant difference between the fitness of GTG and TTG strains in the intracellular competition of macrophages and the competition in mice, but TTG strains showed a fitness advantage in E. coli competition.

Objective This study aims to evaluate the stability and repeatability of digital pressure gauges in laboratory environments, to verify their measurement accuracy in different pressure ranges and performance in long-term use, and to provide scientific basis for the calibration and application of digital pressure gauges. Methods The experiment adopted a multi-point and multiple measurement method, selecting three different pressure points of 0.1,0.3,0.6 MPa for testing. Ten repeated measurements were taken at each pressure point to evaluate the repeatability of the digital pressure gauge. Meanwhile, through long-term measurements every three months for one year, observe the stability performance of the digital pressure gauge during long-term use. The experimental environment conditions are strictly controlled, with a temperature maintained at${\left({20}\pm 2\right)}^{\circ}\mathrm{C}$and a relative humidity between${40}\%$and${60}\%$. Results The standard deviations of the digital pressure gauge at the three pressure points were 0.10088 , 0.30057 and 0.60087, respectively. The standard deviations were small and the repeatability was good. At the same time, during long-term use, the measurement values at each measurement point have a relatively small change amplitude, and the changes in range and average values are within the allowable error range, indicating that it has good long-term stability. Conclusion Digital pressure gauges exhibit high repeatability and stability in laboratory environments, making them suitable for high-precision pressure measurement applications. This study provides a scientific basis for the calibration and practical application of digital pressure gauges, and also provides a reference direction for the research and improvement of related equipment in the future.