Journals >Experiment Science and Technology
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2023
Volume: 21 Issue 4
28 Article(s)
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An Improved Three-point Bending Testing Method for Interlaminar Shear Strength of Fiber Reinforced Composite Laminates
Xiannian SUN, Tianfu HAN, and Yang LIU
Interlaminar shear strength is one of key mechanical properties for fiber reinforced composite laminates, which is mostly evaluated by the three-point bending method using short beam. However, the short beam specimen probably failing in multiple modes may lead to an unsuccessful testing. In this paper, a long-beam specInterlaminar shear strength is one of key mechanical properties for fiber reinforced composite laminates, which is mostly evaluated by the three-point bending method using short beam. However, the short beam specimen probably failing in multiple modes may lead to an unsuccessful testing. In this paper, a long-beam specimen scheme is proposed to improve three-point bending testing method. The span to height ratio of the proposed long beam specimen is adjusted by sticking reinforced patches to the surfaces of laminated specimen, which in turn lowers the ratio of the maximum normal stress and the maximum shear stress within the long beam during three-point bending. By this way, the elevated interlaminar shear stress will lead to shear failure of the specimen to guarantee the effectiveness of testing. Based on the deduced stress formulas of the proposed long beam, the feasibility of long beam with reinforced patches to evoke interlaminar shear failure is discussed. The shear stress formulas are then verified by numerical analysis. Finally, the interlaminar shear strength of glass-fiber reinforced laminates is measured by the proposed testing method, which shows that all the specimens fail in the interlaminar failure mode. Therefore, the proposed testing method of long beam is reliable for evaluation of interlaminar shear strength..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 1 (2023)
Development of Civil Aircraft Knowledge Training System for Ability-oriented Training
Shuanglei CHU, Ruiying WEN, Nanjian ZHUANG, Qiang REN, and Zhiqiang WEI
In view of the lack of effective training means for aircraft knowledge, and the problem about the imbalance and deficiency between the knowledge of aircraft system and aircraft performance happend to the students majoring in traffic management. Base on working ability demand, a civil aircraft knowledge assistant trainiIn view of the lack of effective training means for aircraft knowledge, and the problem about the imbalance and deficiency between the knowledge of aircraft system and aircraft performance happend to the students majoring in traffic management. Base on working ability demand, a civil aircraft knowledge assistant training system is developed for senior undergraduates. The system is divided into two modules: aircraft system and aircraft performance, which integrates autonomous learning, testing and training, assessment and evaluation, and it can meet the training goal of traffic management students on aircraft system and aircraft performance knowledge. In addition, the software adds the “characteristic learning” module of domestic civil aircraft. Through the training of this system, students can choose their own question bank, set the topic question independently, and systematicly and actively learn the aircraft knowledge, which improves the ability of mastering aircraft theory..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 7 (2023)
Innovative Improvement and Teaching Practice of the “Determination of Specific Surface Area of Porous Materials by Flow Adsorption Method”
Shanshan LI, Ming ZHAO, Jianli WANG, Honggang LI, and Caihong GUO
The basic physical experiment of “determining the specific surface area of porous materials by flow adsorption method” has been improved from three aspects of instrument, content, and phenomena in view of the poor repeatability, the lack of single experimental content and less visual experimental phenomena. By replacinThe basic physical experiment of “determining the specific surface area of porous materials by flow adsorption method” has been improved from three aspects of instrument, content, and phenomena in view of the poor repeatability, the lack of single experimental content and less visual experimental phenomena. By replacing the flow control and display system and using the self-designed adsorption instrument, the stability of the experiment results is significantly improved. The application of the improved device in practical teaching shows that it can be popularized. On the basis, a typical application of porous materials in CO2 capture has been introduced into the experiment in combination with the national “double carbon” strategy. Then visual experimental phenomena are added, and the color change of the indicator is used to judge the adsorption end point. This improved experiment combines cutting-edge science and technology with classic experiments, which embodies the teaching concept of integration of science, education and innovative development, so that students can understand the cutting-edge of science and technology, enhance their professional identity, and cultivate innovative thinking and scientific research ability..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 15 (2023)
Design and Research of Linear Array LED Display Device Based on Multi-disciplinary Intersection and Integration
Xiaonan YUAN, Ruicheng LI, Xinru GAO, and Yanze ZHU
The main body of this paper is the design and research of linear ARRAY LED display device. It decomposes the design elements of the device and analyzes the particularity of the rotating platform in the process of device design. Starting from the power supply mode of the rotating platform and the mechanical structure deThe main body of this paper is the design and research of linear ARRAY LED display device. It decomposes the design elements of the device and analyzes the particularity of the rotating platform in the process of device design. Starting from the power supply mode of the rotating platform and the mechanical structure design of the device, it ensures the performance requirements of the device based on multi-disciplinary intersection and integration. The system uses STC89C52 microcontroller as the main control unit. It controls and displays the image with infrared remote control unit. It corrects the balance effect of the device and the wireless power supply effect of the rotating platform through the mechanical design technology. Based on the principle of human vision transient phenomenon, a rotating platform driven by a motor is used to accomplish the image display. The device is fabricated using the 3D printing technology. The experiment shows that the device can display various states stably and clearly. The organic combination of multi-disciplines solves the complex problems in scientific research effectively..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 21 (2023)
Study on the Synthesis and Catalytic Properties of Silver Nanoparticles Prepared with Biomass-derived Carbon Dots as Reductant
Yan ZHAO, Chenyu LI, Zhenyu XIE, Haigang ZHAO, Juan DU, and Baozhan ZHENG
Biomass-derived carbon dots, which are synthesized by the one-step hydrothermal treatment of biowaste ginkgo leaf in aqueous solution, can be used for the synthesis of silver nanoparticles. In the presence of NaBH4, the silver nanoparticles have catalytic properties for the reductive decolorization of organic dyes methBiomass-derived carbon dots, which are synthesized by the one-step hydrothermal treatment of biowaste ginkgo leaf in aqueous solution, can be used for the synthesis of silver nanoparticles. In the presence of NaBH4, the silver nanoparticles have catalytic properties for the reductive decolorization of organic dyes methyl orange and rhodamine 6G. This experiment exposes students to the fields of edge nanotechnology, analytical chemistry, catalytic and kinetic analysis, from which the students’ comprehensive experiment abilities have been remarkably improved. It also provides a reference for the reformation of analytical chemistry experiment teaching..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 26 (2023)
Accurately Measuring the Moment of Inertia of Rigid Body Based on Smartphone Sensor and Phyphox Software
Zisong HE, Mengge JIAO, Yihang JIANG, Jiancheng ZHOU, Yanlian LEI, Weiyao JIA, and Qiaoming ZHANG
Measuring the moment of inertia of rigid body is a required item in college physics experiment in most universities. The traditional method employs the photoelectric gate and millisecond meter to measure the angular acceleration of rigid body during rotation, and subsequently obtains its moment of inertia. However, thiMeasuring the moment of inertia of rigid body is a required item in college physics experiment in most universities. The traditional method employs the photoelectric gate and millisecond meter to measure the angular acceleration of rigid body during rotation, and subsequently obtains its moment of inertia. However, this method not only needs complex instruments, but also has low measurement accuracy. In this work, a smartphone with phyphox software has been employed to accurately measure the angular acceleration of the rigid body and then obtains its moment of inertia thanks to the high precision sensor in the smartphone. Hence, our current work evidences that smartphone exhibits high potential on improving the precision of college physics experiments with low cost, high precision, and simple operation..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 32 (2023)
Single-chip Microcomputer Experiment Design with the Goal of Strengthening Process Assessment
Weitao ZHANG, Xiaoguang YUAN, Yinghui QUAN, Aifeng REN, and Shuntian LOU
Most of the single-chip microcomputer experiments for engineering applications are conducted in open laboratories, and the process assessment has always been the difficulty of the assessment for open laboratory courses. In the post-epidemic era, the less gathered requirement and the lack of experimental teachers furtheMost of the single-chip microcomputer experiments for engineering applications are conducted in open laboratories, and the process assessment has always been the difficulty of the assessment for open laboratory courses. In the post-epidemic era, the less gathered requirement and the lack of experimental teachers further increase the difficulty of the process assessment. In view of the above problems, an experimental teaching management system is designed and implemented for single-chip microcomputer experiment, which includes the hardware platform and the host computer. The hardware platform takes dual advanced RISC machine (ARM) as the core, which communicates with the experimental board designed by students via the serial interface, and uses the unified communication command to authenticate the experimental board. It also automatically stores the experimental data, which improves the flexibility for students to carry out experiments. Teacher can find out and read the experimental data through the host computer software, comprehensively tracking the progress of the students’ experiment, which alleviates the difficulties of process assessment. The experience can be extended to other experimental courses..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 37 (2023)
Promoting High-quality Development of Higher Engineering Education Teaching through Competitions
Hailong HUANG
Based on the existing engineering training and practical teaching system, a “competition-driven, competition-teaching integration” engineering education practical teaching system is constructed with the goal of cultivating engineering comprehensive innovation ability. The system breaks the isolated teaching of process Based on the existing engineering training and practical teaching system, a “competition-driven, competition-teaching integration” engineering education practical teaching system is constructed with the goal of cultivating engineering comprehensive innovation ability. The system breaks the isolated teaching of process and skills in the existing engineering training modular teaching, and builds an engineering innovation practice platform that connects with the four major tracks of the “China College Student Engineering Practice and Innovation Ability Competition” through multidisciplinary cross-design, multiple process types, multiple equipment types, and comprehensive process guidance. In accordance with the rules and requirements of the national competition, the competition theme is integrated into the daily engineering practice teaching, making it popular and normalized. While steadily improving students’ engineering comprehensive innovation ability, it accumulates experience for the selection of the three levels of the competition at the school, provincial, and national levels, and achieves normalized integration and mutual promotion of competition and teaching, thus enhancing the overall engineering comprehensive innovation practice ability of university students in the engineering training teaching platform and assisting the high-quality development of engineering education teaching in universities..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 44 (2023)
Teaching Design and Practice of Project Curriculum for New Engineering Software Freshmen
Shan YANG, Li YI, Mengjie ZHANG, Xiangyin ZHU, and Zhonghai HE
This paper analyzes and designs three problems existing in the new project curriculum of image classification tasks for software majors in the new engineering discipline. These problems include a lack of familiarity with Python language, a short time to learn image classification, and difficulty in setting up practicalThis paper analyzes and designs three problems existing in the new project curriculum of image classification tasks for software majors in the new engineering discipline. These problems include a lack of familiarity with Python language, a short time to learn image classification, and difficulty in setting up practical environments for students. To address these issues, a course teaching design based on Baidu’s AI Studio platform and centered around the application of pre-trained models from PaddleHub is proposed. This design incorporates practical applications of linear algebra, fine-tuning practices with pre-trained models, and online and offline team collaboration and learning. In the future, this design can be improved by allowing students to independently select and design recognition tasks. This curriculum design aims to help students lay a foundation in engineering, improve professional skills, cultivate teamwork abilities, and ultimately achieve the goal of enhancing professional interest and confidence..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 49 (2023)
Application of Visual Graphical Programming in the Teaching of New Engineering Experiments
Hang XU, Yue YIN, Man SUN, Yingwei ZHU, and Ye SHEN
Under the new requirements of cultivating talents in new engineering disciplines, the objective of the reform of engineering practice teaching is to cultivate more outstanding engineering innovative talents. In order to solve the contradiction between classroom knowledge focusing on basic theory and the cultivation of Under the new requirements of cultivating talents in new engineering disciplines, the objective of the reform of engineering practice teaching is to cultivate more outstanding engineering innovative talents. In order to solve the contradiction between classroom knowledge focusing on basic theory and the cultivation of innovative thinking talents, Sichuan University Circuit Laboratory has applied the experimental teaching system based on LABVIEW visual graphical programming software, which has the functions of signal analysis, data acquisition, data processing, data saving and data graphical display, etc. to the experimental teaching of undergraduate circuits. The GDS-1000B, AFG-2225 hardware platform and LABVIEW software are used to collect and process voltage, frequency and waveform data from series resonant and single-tube amplification circuits, enabling independent analysis of resonant frequencies and effective storage of waveform data. The experimental results show that the system is stable, has high measurement accuracy, and can be applied to other experiments and research projects with good portability..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 54 (2023)
Comprehensive Experiment on Acidolysis and Product Crystallization of Phosphorus Tailing for Undergraduate Students
Junyi JI, Bing WANG, Wen TIAN, Yanping HUANG, Pan WU, and Wei JIANG
Based on the scientific research concept of atomic economy and comprehensive utilization of solid waste, the production of high value-added products by “turning waste into treasure” based on the solid waste is introduced into the undergraduate’s experiment. Based on the comprehensive experiment of acidolysis of phosphoBased on the scientific research concept of atomic economy and comprehensive utilization of solid waste, the production of high value-added products by “turning waste into treasure” based on the solid waste is introduced into the undergraduate’s experiment. Based on the comprehensive experiment of acidolysis of phosphorus tailings, the experiment of acidolysis and product crystallization of phosphorus tailings is designed. The comprehensive experiment includes chemical engineering process of selective tailings acid leaching decomposition, filtration and crystallization, and oriented crystal growth. Moreover, with the aid of scanning electron microscope (SEM), the micro-structure and length/diameter ratio of the whisker and the elemental content analysis are also determined. These contents can train the practical ability, experimental equipment operation skill and analytical ability of the undergraduates, and learn about the operation principle of the instruments and results analysis method, thus realizing the connection between undergraduate and postgraduate stages. Based on the experimental design, the scientific research innovation consciousness and the theoretical knowledge system of the students are highly improved, and the ideological and political theories are integrated in the teaching process, which achieve the teaching aims of comprehensive experiment..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 59 (2023)
Teaching Design of Comprehensive Experiments of Environmental Monitoring under the Mode of Outcome-based Education
Yingheng FEI, and Gang SONG
“Environmental monitoring experiment” is a core curriculum for the undergraduate students in the major of environmental science or environmental engineering. In order to better train the students to be the integrated talents with both excellent practice skills and outstanding innovative capacity, comprehensive experime“Environmental monitoring experiment” is a core curriculum for the undergraduate students in the major of environmental science or environmental engineering. In order to better train the students to be the integrated talents with both excellent practice skills and outstanding innovative capacity, comprehensive experiment projects aiming at enhancing the students’ innovative capacity are of great necessity. The present study explores the teaching design of one of the comprehensive experiments of “determination of mercury content in hairs”. The teaching strategy and design are continuously improved. Under the guidance of outcome-based education (OBE), whole-process evaluation including the experiment design and preparation, operation and observation, data analysis and discussion is established for the score assessment..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 65 (2023)
Experimental Teaching Design of Electromagnetic Wave Based on Mobilephone
Xianfeng LIU, Deqiang YANG, Bo CHEN, and Jin PAN
In this paper, a new experimental teaching design of electromagnetic wave is proposed, in which the mobile phone is transformed into a microwave power meter and Wi-Fi router is used as the transmitting signal source. The experiment is used to study the electromagnetic wave propagation characteristics, electromagnetic wIn this paper, a new experimental teaching design of electromagnetic wave is proposed, in which the mobile phone is transformed into a microwave power meter and Wi-Fi router is used as the transmitting signal source. The experiment is used to study the electromagnetic wave propagation characteristics, electromagnetic wave polarization characteristics and electromagnetic shielding efficiency. The experimental equipment is popular, easy to operate, and the time and location of the experiment are not limited, which can meet the diversified learning needs of students in the Internet era. In addition, the experimental design is combined with life practice and encourages free play, which plays a positive role in promoting learning interest and cultivating innovative thinking..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 70 (2023)
Ideological and Political Teaching Design of Plant Physiology and Biochemistry Experiment Course
Huiying ZHANG, Jian LIU, Dongmei CHEN, Yuanyuan SONG, Rensen ZENG, and Yuan QIN
The effect of experimental teaching is not only related to the degree of mastery of knowledge and improvement of skills, but also related to the cultivation of scientific literacy and native land emotion for students, which directly affects the effect of the cultivation of innovative talents in China. Here, we takes thThe effect of experimental teaching is not only related to the degree of mastery of knowledge and improvement of skills, but also related to the cultivation of scientific literacy and native land emotion for students, which directly affects the effect of the cultivation of innovative talents in China. Here, we takes the plant physiology and biochemistry experimental course of “The Determination of Nitrate Reductase Activity” as an example, using the problem-based learning (PBL) teaching mode, and discusses the silent integration of ideological and political education from the aspects of teaching design, implementation plan and typical teaching activities. From the perspective of teaching effect, the students’ practical ability, innovation ability, ability to find and solve problems have been effectively improved, and the native land emotion, the awareness of the “Two Mountains”, the awareness of rural revitalization promoted by science and technology, and the awareness of agriculture, rural areas and farmers have been effectively enhanced. In conclusion, we provides a paradigm for innovative experimental teaching in agriculture and forestry colleges, and also provides a reference for efficient training of students’ comprehensive quality..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 75 (2023)
Comprehensive Experimental Design for Enrichment of Phosphopeptides by Functionalized Magnetic Composite Nanomaterials
Lingzhu YU, Jian LU, and Yanfei TAN
Along with the demand of our country on cultivating scientific and innovative talents, we are encouraged to reform traditional experiment teaching content by focusing on the country’s development needs and introducing frontier science to the designation of comprehensive experiment. Taking the multidisciplinary characteAlong with the demand of our country on cultivating scientific and innovative talents, we are encouraged to reform traditional experiment teaching content by focusing on the country’s development needs and introducing frontier science to the designation of comprehensive experiment. Taking the multidisciplinary characteristics of biomedical engineering into account, we innovatively design a research-based comprehensive experiment, that is functional magnetic composite nanomaterials for enrichment of phosphopeptides. This experiment, which covers chemistry, materials, biomedical and other disciplines, exhibits great application prospect and scalability, and leaves the student with abundant research space for further exploration and development. This experiment integrating multiple disciplines not only develops the innovative thinking of students, but also enhances the research ability for potential scientific and innovative talents..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 81 (2023)
Exploration on the Reform of Biochemical Experiment in the Context of Educational Informatization
Jia FAN, Dongchao ZHENG, Zhen YAN, Fosheng LI, and Li XIONG
Scientific experiments are indispensable parts of biochemistry teaching. In this era of educational information, how to improve the teaching quality of biochemistry experiments by using the information technology has become a new challenge for teachers. Through analyzing and summarizing the characteristics and problemsScientific experiments are indispensable parts of biochemistry teaching. In this era of educational information, how to improve the teaching quality of biochemistry experiments by using the information technology has become a new challenge for teachers. Through analyzing and summarizing the characteristics and problems of biochemical experiment teaching, effective reform methods based on informatization are explored from the aspects of optimizing experiment teaching content, constructing digital learning resources, improving teaching methods, and perfecting teaching evaluation systems. These reform initiatives enhance the interest in study, independent learning ability, and inquiry skills of students, thus obviously promoting talent cultivation..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 86 (2023)
Detection and Control of DC Motor Speed Based on ELVIS and LabVIEW
Junfang GAO, and Huawen ZHENG
With the application of motor in industry more and more widely, the measurement and control of motor speed, which is the most important parameter of motor, is particularly important. In order to facilitate students to carry out the measurement and control system experiment, a DC motor speed detection and control systemWith the application of motor in industry more and more widely, the measurement and control of motor speed, which is the most important parameter of motor, is particularly important. In order to facilitate students to carry out the measurement and control system experiment, a DC motor speed detection and control system based on NI ELVIS experimental platform and LabVIEW software is designed. Photoelectric sensor and Hall sensor are selected as acquisition sensors for speed detection, and then the signal is transmitted to the upper computer through NI ELVIS experimental platform, and the acquisition program and measurement and control interface of the upper computer are written, so as to display the detection results on the front panel of the upper computer. PID control is selected as the speed control mode, LabVIEW software is used to write the PID control program, at the motor speed is changed by adjusting the output voltage through PID. The system is simple and flexible, convenient for debugging, and has strong scalability, which enables students to master the measurement and control system architecture more specifically and deeply, and also lays a solid foundation for future project development..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 91 (2023)
Research and Practice of Experimental Teaching in the General Course of Robot
Ming FANG, and Hongjun WANG
There are some courses related to the robot technology in general education courses of college, but some practical problems still exist, such as relatively few number of courses, emphasis on theory rather than practice, lack of suitable teaching materials, and ineffective use of robot teaching resources. Combined with There are some courses related to the robot technology in general education courses of college, but some practical problems still exist, such as relatively few number of courses, emphasis on theory rather than practice, lack of suitable teaching materials, and ineffective use of robot teaching resources. Combined with the actual situation of general education in robot, experimental teaching is introduced into the general course of robot, and the existing experimental teaching resources of robot are fully utilized to ensure that the practical content accounts for a larger proportion in the course. An innovation practice course of robot is set up, which is suitable for general education and can be widely promoted, reform traditional teaching scheme, and promote opening and sharing of robot laboratories. The practice demonstrates that, on the basis of ensuring the advanced teaching content, realizing the student-centered experimental teaching mode, combining the online and offline teaching, and enabling students’ learning and exploration to extend beyond the class gain good teaching effect..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 99 (2023)
Course Design of Energy and Power Engineering Testing Technology Based on Self-made Equipment
Wenting XING, Chi ZHU, Xiaoming YE, and Jiejun WU
The experiment course of energy and power engineering testing technology includes four experiment items: temperature measurement and calibration, pressure and velocity measurement, flow measurement and calibration, and measurement of speed, torque and power. This course is based on self-made teaching attachments, closeThe experiment course of energy and power engineering testing technology includes four experiment items: temperature measurement and calibration, pressure and velocity measurement, flow measurement and calibration, and measurement of speed, torque and power. This course is based on self-made teaching attachments, closely combined with textbook content and engineering practice. The designed teaching experiments are rich in content, which can enable studens to fully master the principles and methods of testing technology, and improve engineering application and practical innovation ability. It meets the current undergraduate experimental teaching demand..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 105 (2023)
Teaching Research of Computer Network Course Experiment for Automation Specialty
Le YANG, Zhixia DING, and Sai LI
This article aims to design a comprehensive course experiment aimed at improving students’ knowledge mastery in an intuitive and interesting way, in response to the characteristic of limited class hours in the course “Computer Network” for automation majors. This experiment uses three laptops and a Raspberry Pi smart cThis article aims to design a comprehensive course experiment aimed at improving students’ knowledge mastery in an intuitive and interesting way, in response to the characteristic of limited class hours in the course “Computer Network” for automation majors. This experiment uses three laptops and a Raspberry Pi smart car to establish a WiFi wireless local area network. The program written in the laptop is transmitted to the Raspberry Pi car through the wireless local area network, and then the car is remotely controlled to compile the program. Afterwards, the application software in the laptop can view real-time video information collected by the camera of the Raspberry Pi car and control the movement of the car. The experiment principle part introduces the process of realizing wireless data communication based on the computer network architecture, highlights the CSMA/CA protocol used in the data link layer of wireless devices, and lists the key points of CSMA/CA protocol. This experiment can help students form a holistic concept of the knowledge of “Computer Network” and cultivate their ability to continue learning through the relevant technologies involved in the experiment..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 111 (2023)
Comprehensive Experiment Design on Hydrophilic Modification and Evaluation in Vitro of Curcumin Nano-capsules
Huandi LIU, Jie DU, Honglei ZHANG, Xinchao JIA, Lulu ZHANG, and Wei LI
In this experiment, amphiphilice polyhydroxyalkanoate (PHA) particle surface binding protein (PhaP) was synthesized and purified. PhaP was effectively modified on the surface of curcumin nanosphere (Cur@PHA), and the dispersion performance of nanosphere was effectively improved by surface modification. The morphology, In this experiment, amphiphilice polyhydroxyalkanoate (PHA) particle surface binding protein (PhaP) was synthesized and purified. PhaP was effectively modified on the surface of curcumin nanosphere (Cur@PHA), and the dispersion performance of nanosphere was effectively improved by surface modification. The morphology, stability, drug release and in vitro cytotoxicity of the drug delivery system of Cur-PhaP@PHA were characterized and analyzed. The results showed that Cur-PhaP@PHA had good sphericity, excellent light stability, and sustained and controlled release. It also exhibited better drug absorption and bioavailability than free curcumin. This comprehensive experimental design is based on industrial demand, inspiring students to analyze and solve problems from the perspective of industrial application and technological innovation, which is conducive to improving students’ comprehensive innovation ability..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 118 (2023)
Construction of Big Data Teaching Platform Based on Server Cluster
Lei HAN, Zhan SHI, and Yanfeng SHI
Data Science and Big Data Technology is an emerging specialty under the background of New Engineering. Its theoretical teaching system has been preliminarily formed, but there are deficiencies in practical teaching, especially in the construction of the experimental platform. Therefore, this paper puts forward the consData Science and Big Data Technology is an emerging specialty under the background of New Engineering. Its theoretical teaching system has been preliminarily formed, but there are deficiencies in practical teaching, especially in the construction of the experimental platform. Therefore, this paper puts forward the construction scheme of a big data teaching platform based on Hadoop cluster and virtualization technology, and carries out progressive projected-based practical teaching. The construction scheme is abbreviated as “2+2+2”, namely two functional clusters of Hadoop and cloud computing, two groups of teaching management and resource management systems, and two kinds of applications both daily teaching and innovative practice. Analyzing the progressive relationship of the big data professional practice teaching system, the project teaching is implemented on this platform with the recommendation system as an example. Students’ experimental experience and overall teaching effect have been significantly improved..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 124 (2023)
Construction of Intelligent Experiment Teaching Platform Based on Flexible Virtual Simulation Technology
Yun BAI, Wenwen JIN, Yuanmin ZHU, Yuanxi WU, Qunwei LU, Longjiang YU, and Yafeng LIU
Based on the integration of information technology and experimental teaching, the overall framework and design of intelligent experimental teaching platform based on flexible virtual simulation design system are introduced in this paper. Then the advantages of flexible design virtual simulation system and the constructBased on the integration of information technology and experimental teaching, the overall framework and design of intelligent experimental teaching platform based on flexible virtual simulation design system are introduced in this paper. Then the advantages of flexible design virtual simulation system and the construction requirements related experimental teaching resources are highlighted. The construction and application of intelligent experimental teaching platform explore a useful reference to realize intelligent experimental teaching in universities..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 132 (2023)
Management and Maintenance of JNM-ECZ400S/L1 Nuclear Magnetic Resonance Spectrometer
Yanping HUANG, and Wen TIAN
Nuclear magnetic resonance spectrometer is one of the most powerful tools for qualitative analysis of the composition and structure of various organic and inorganic substances. Therefore, nuclear magnetic resonance spectrometer is of great significance in the fields of organic chemistry, pharmaceutical engineering and Nuclear magnetic resonance spectrometer is one of the most powerful tools for qualitative analysis of the composition and structure of various organic and inorganic substances. Therefore, nuclear magnetic resonance spectrometer is of great significance in the fields of organic chemistry, pharmaceutical engineering and medicine. At present, Bruker is still the mainstream of nuclear magnetic resonance spectrometer in China, and the market share of nuclear magnetic resonance spectrometer of JEOL is not high. In recent years, due to trade frictions between China and the United States, Japan’s electronic nuclear magnetic resonance spectrometer has gradually increased in the domestic market. However, the corresponding use and maintenance experience is still insufficient. Combined with the actual use of JNM-ECZ400S/L1 nuclear magnetic spectrometer in our college, this paper summarizes the management, maintenance and daily fault solutions of JEOL nuclear magnetic equipment, so as to provide reference experience for peers..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 137 (2023)
A Practical Study of Building AI Experiment Platform Based on Traditional Computer Room
Chunlin CHEN, and Xubin CAO
Artificial intelligence teaching is being integrated into various disciplines, its theoretical and practical teaching are equally important, and the experimental teaching of artificial intelligence has specific and complex requirements for experimental conditions. This paper introduces the practice and reflection on thArtificial intelligence teaching is being integrated into various disciplines, its theoretical and practical teaching are equally important, and the experimental teaching of artificial intelligence has specific and complex requirements for experimental conditions. This paper introduces the practice and reflection on the method of architecture transformation and construction of AI experimental teaching platform based on traditional laboratory rooms. By fully utilizing existing hardware resources such as workstations for software system architecture implementation and thoroughly introducing open-source technology solutions such as Kubernetes (K8s) and Docker, an all-process AI teaching experiment environment that significantly improves teaching and research efficiency can be created based on the work in this paper. This is achieved without impacting regular teaching activities. The approach optimizes operating mechanisms and service models, realizes demand-customized teaching resources, enhances the level of teaching management, and provides beneficial insights and methods for the construction of an experimental teaching environment for artificial intelligence..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 141 (2023)
Application of 5S Management in University Chemical Laboratories
Xianli YANG, Peng WANG, and Zhen MENG
University laboratories are important scientific research places in universities, where researchers frequently launch research work. The chemical laboratory involves a wide variety of chemicals, dangerous equipment and different chemical reactions. Based on these characteristics and current situations, 5S management (sUniversity laboratories are important scientific research places in universities, where researchers frequently launch research work. The chemical laboratory involves a wide variety of chemicals, dangerous equipment and different chemical reactions. Based on these characteristics and current situations, 5S management (seiri, seiton, seiso, seiketsu, shitsuke), a method originated from Japanese companies, is playing a role in routine management of the university chemical laboratories to improve the environment of laboratories and promote the quality of experimenters. The application of 5S management effectively improves the utilization rate of laboratory space and work time, optimizes research environment, reduces the potential safety hazards, and improves the management level of laboratories..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 145 (2023)
New Exploration of Safety Education and Management in College Psychology Laboratories
Libo QIAO, Zongyi HAN, Jufu LUO, and Chunjian ZHAO
To solve the problems of low emphasis on college psychology laboratories, the lack of targeted safety education and low efficiency in daily management, this paper presents improvement methods from 2 perspectives and 6 aspects. Two perspectives include school-level and college-level daily management, and 6 aspects incluTo solve the problems of low emphasis on college psychology laboratories, the lack of targeted safety education and low efficiency in daily management, this paper presents improvement methods from 2 perspectives and 6 aspects. Two perspectives include school-level and college-level daily management, and 6 aspects include safety education training and scheduling warm reminder, safety knowledge promotion and awareness enhancement, instrument safety assessment and equipment status assessment, safety education admission and online exam training, instrument operation training and examiner qualification assessment, and instrument reservation process and daily management. The access training mechanism for psychology laboratories is explored, and the laboratory safety education and daily management are improved. Through two years of theoretical practice, the safety awareness of teachers and students and the management efficiency of laboratory administrators have been significantly improved..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 151 (2023)
Research on the Path of University Laboratory Construction Based on Self-research Equipment
Donggang RAN, Wenjun WANG, Chunjin LIN, and Liyuan JIAO
The indigenous development and fabrication of significant scientific instruments play a crucial role in rectifying deficiencies in China’s research instrument manufacturing capabilities and enhancing technological innovation. Shandong University has seamlessly integrated the research and development of a large-scale geThe indigenous development and fabrication of significant scientific instruments play a crucial role in rectifying deficiencies in China’s research instrument manufacturing capabilities and enhancing technological innovation. Shandong University has seamlessly integrated the research and development of a large-scale geological mechanics model testing system with laboratory construction. Building upon the foundation of autonomously developed experimental equipment, this approach has introduced a dependable new avenue for the construction of vital transportation infrastructure for our country. Empirical evidence underscores that the integration of indigenous instrument development and laboratory establishment not only yields remarkable scientific research outcomes but also furnishes robust support for addressing societal challenges and advancing national strategies. This harmonious fusion of efforts contributes valuable insights to the advancement of modernization in Chinese university laboratories..
Experiment Science and Technology
- Publication Date: Aug. 28, 2023
- Vol. 21, Issue 4, 156 (2023)
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