ABSTRACT: Blood test is an important basis for the health assessment of animals, and plays an important role in the field of medical animals. In-depth analysis of the preservation conditions of blood specimens can greatly improve the accuracy of zoological testing, and accurate blood testing results can become an important reference for disease diagnosis and treatment. Scientific and reasonable preservation conditions can ensure the stability of the blood, and the health state of the animal body can also be reflected by the blood. This paper makes an in-depth analysis on the influence of the blood specimen preservation conditions on the animal blood test results, and puts forward several feasible specific strategies, in order to provide reference and help, provide an important guarantee for the treatment of animal diseases, and comprehensively promote the modern development of animal medicine in China.

In recent years, the number of inspection and testing institutions in China has continued to grow, and the industry's overall revenue has also increased significantly. However, as market competition intensifies, inspection and testing institutions face dual challenges of cost and efficiency. This article took Centre Testing International Group Co., Ltd. as an example to introduce the concept of lean management in the laboratory, including the use of standardization models, electronic laboratory notebooks, and robot automation tools, pointed out that lean management optimizes laboratory workflow and resource allocation, improves efficiency and reduces cost, and discussed the potential advantages and promotion prospects of lean management in the field of inspection and testing, providing reference and exemplar for relevant inspection and testing institutions.

Objective In response to the low accuracy of online detection of total sulfur content in natural gas, a research on online detection method based on gas chromatography-mass spectrometry (GC-MS) technology is carried out. Methods By designing an efficient online sampling method, continuous and stable collection of natural gas samples is achieved, ensuring the representativeness of the tested samples. At the same time, combining the high-resolution and strong qualitative capabilities of GC-MS, detection and analysis conditions for total sulfur content in natural gas are set, and corresponding result calculation algorithms are developed to ensure the accuracy and reliability of the detection results. Results The comparative experiments show that the detection results of the samples tested by the proposed method are highly consistent with the actual total sulfur content, and the deviation is very small. The specific numerical deviation is within$\pm {0.2}\mathrm{{mg}}/{\mathrm{m}}^{3}$, which is significantly smaller than that of the comparison method. Conclusion This method can not only accurately and quickly determine the total sulfur content in natural gas, but also significantly improve the detection accuracy compared with the existing methods, which can effectively meet the strict requirements of natural gas quality monitoring and environmental protection, and provide strong technical support for the online monitoring of total sulfur content in natural gas industry.

With the rapid development of information, the digital campus has become an important development trend in higher education. As an important place for teaching and scientific research, the digital construction of university laboratory management system of great significance to improve the efficiency of laboratory management and ensure the quality of experimental teaching. Based on the current situation of the construction of the university laboratory management system the background of the digital campus, this paper discusses the construction strategies in detail, including thorough innovation of the traditional model, improvement of the ability level of management personnel improvement of supporting facilities and personnel configuration, and strengthening of information security protection. By implementing these strategies, the digitalization process of the university management system can be effectively advanced, and providing more efficient and convenient services for teaching and scientific research.

Objective This study aims to explore the application of gel permeation chromatography in determining the content of xylene-soluble substances in polypropylene. Methods The study employed gel chromatography to accurately measure the content of xylene-soluble substances in polypropylene and conducted a comparative analysis with the volumetric method to verify the accuracy and reliability of gel chromatography. Results The experimental results indicated that the absolute difference between the measurement results obtained by gel chromatography and the volumetric method did not exceed 0.07%, meeting the accuracy requirements. Furthermore, gel chromatography significantly shortened the analysis time from approximately 8 hours with the volumetric method to 3 hours, and the operation was more straightforward. The amount of xylene used during sample processing was greatly reduced, demonstrating its efficiency and environmental friendliness. Conclusion This study successfully validated the feasibility and superiority of gel chromatography in determining the content of xylene-soluble substances in polypropylene. This method is not only simple to operate and fast in analysis but also highly environmentally friendly, with minimal impact on the environment and operators. It provides strong support for the rapid detection and control of polypropylene product quality and holds broad industrial application prospects.

This article aims to investigate the common technical issues regarding the non-excavation detection of the anti-corrosion coating condition of long-distance pipelines, and propose solutions and technical measures. Among the external corrosion detection methods for the regular inspection of long-distance pipelines, the non-excavation detection of the anti-corrosion coating condition detection is a major aspect. The PCM (Pipeline Current Mapper) testing technology is used. The quality of its detection determines the detection result of damaged areas in the anti-corrosion coating and the safety of long-distance pipeline operation. On the basis of analyzing the significance of PCM detection for long-distance pipelines, this article explores the prevalent problems encountered in PCM detection of long-distance pipelines. In combination with years of practical operation experience and relevant national regulations, targeted solutions and treatment approaches are proposed.

With the continuous development of biotechnology, cell products have been widely used in medicine and regenerative medicine, and quality control is crucial. Enzyme linked immunosorbent assay (ELISA) is one of the detection methods known for its high sensitivity and specificity, and it is essential in the quality inspection of cell products. In view of this, this article further explores the application of ELISA and other laboratory techniques in the quality inspection of cell products.

In university laboratories, physics thinking dominated by science and technology is in a dominant position. Usually, university laboratory managers summarize the causes of accidents and carry out safety education or inspection according to the conclusions. This kind of summary management method is essentially based on physical thinking, and its main disadvantage is that it can not cover all the hidden dangers, and accidents will continue to happen. Biological thinking comes from biological system, and its characteristics of co-existence with risk are highly compatible with laboratory safety management. By applying biological thinking to laboratory safety management, this paper gives full play to the advantages of biological thinking to solve laboratory safety problems, and carries out safety education by using biological thinking, in order to enhance the safety awareness of teachers and students, expand the scope of hidden danger prevention, and provide unified thinking methods for some specific operations in current management.

As the key tool of petroleum exploration and exploitation, the technical level of petroleum guide equipment and instrument directly affects the efficiency and safety of petroleum engineering. At the same time, in the production process of petroleum products, laboratory testing technology also plays an irreplaceable role, and the integrated application of the two is more critical to the development of petroleum engineering. This paper discusses the integrated application of petroleum guidance equipment and laboratory testing technology in petroleum engineering, aiming to improve the efficiency and accuracy of petroleum exploration, exploitation and product testing. Through the detailed analysis of the advanced nature of guiding equipment and instruments and the latest progress of laboratory testing technology, this paper proposes the specific strategy and implementation path of the two fusion application. Research shows that this integrated application can not only significantly improve the production efficiency and safety of petroleum engineering, but also provide strong support for the high-quality development of the oil industry.

This paper mainly studies the application of railway food testing and HACCP system, aiming to provide reference for the industry insiders, to ensure the safety and health of domestic railway food. By explaining the key points of railway food detection and their value, it analyzes the key points of railway food detection based on HACCP system, and conducts food detection combined with a train catering base. For fast food lunch boxes, food and drinking utensils, and production environment were tested, HACCP correction analysis was adopted based on the testing results, and corresponding remediation measures were formulated to improve the quality of food testing. The results show that the qualified rate of each index after rectification is between 80%~85%, which can guarantee the safety of food. It is found that HACCP system has obvious application value for railway food detection and can be further promoted.