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An Identification of B(A)02 subgroup blood
Get PDFObjective To explore the necessity and feasibility of RBC blood typing by molecular technique for unidentified blood group. Methods The blood group was identified by serological test and molecular detection. Results One case of blood donor showed weakly positive reaction to anti -A, strongly positive reaction to anti-B and anti -H, weakly positive reaction to A 1 RBCs but no reaction to either B or O blood type. The sample was subjected to the detection of ABO genes and the results showed 9 mutants in Exons 6 and 7. The type B(A)02 was identified when comp a red with A101 allele. Conclusion Genetic detection is helpful for finding B(A) subgroup blood that cannot be identified by serological test
The Research on interlaboratory comparison test of LED lighting products
Get PDFThe article introduces the Interlaboratory Comparison (IC) test for three different types of light emitting diode (LED) lamps measurement about the key photometric, colorimetric, and electrical parameters. The article analyses the deviations of the test results between the reference values and test results from six participating laboratories. It found that the photometric and colorimetric parameters showed high deviations between the reference values and participating laboratories’ test results. The recommended participating laboratory improvement measures in the article are as follows: checking the traceability of standard artefacts, checking data correction, improving test procedures, checking ambient temperature, checking calculation software, and checking the response of the photodetector, etc
Study on the correlation between ultrasonic signs and molecular biological expression in breast cancer
Get PDFObjective: To explore the correlation between ultrasonic signs and molecular biological expression in breast cancer, in order to improve the diagnostic level of ultrasound for breast cancer and provide reliable imaging information for the treatment and prognosis assessment of breast cancer. Methods: A total of 50 patients with breast cancer confirmed by surgical pathology were randomly selected and underwent high-frequency breast ultrasound examination, focusing on observing the shape, edge, posterior echo, microcalcification, internal blood flow, and axillary lymph nodes of the mass; immunohistochemistry was used to detect the expression of ER, PR, and CerbB-2 genes, and their relationship with ultrasound performance was analyzed. Results: ① The detection rate of microcalcification in breast cancer <2cm was the highest, followed by spiculated edge; the detection rate of irregular shape was higher in tumors >2cm. ② The positive rate of ER and PR in patients with a tumor aspect ratio >1 was 77.8% and 61.1%, respectively, which was higher than those with an aspect ratio ≤1 (P<0.05); ③ The positive rate of ER and PR in patients with spiculated edge signs was 65.5% and 55.2%, respectively, which was higher than those without spiculated edge (P<0.05); ④ The positive rate of ER and PR in patients with peripheral high echo dizzy was 73.3% and 60.0%, respectively, both higher than those without high echo dizzy (P<0.05); ⑤ The positive rate of PR in patients with anechoic area was 22.2%, lower than those without anechoic area (P<0.05); ⑥ The positive rate of CerbB-2 in patients with microcalcification was 83.3%, higher than those without microcalcification (P<0.05). Conclusion: There is a certain relationship between the ultrasound performance of breast cancer and the expression of molecular biological indicators, and the biological characteristics of the tumor affect the ultrasound performance of breast cancer. Ultrasound examination can provide imaging basis for the prognosis assessment and clinical treatment selection of breast cancer
Design, optimization, debugging, and simulation of an agricultural biomimetic hexapod robot
Get PDFThis paper comprehensively studies the model establishment, kinematic analysis, hardware design, software development, and agricultural applications of hexapod robot, laying a solid foundation for their practical application in the agricultural field and proposing prospects for future research and development. This article mainly conducts in-depth research on the mechanical design, kinematic analysis, hardware implementation, software development, and application in the agricultural field of hexapod robots. Firstly, a brief introduction to biomimetic robots will be provided, and a comparative analysis will be conducted on existing common legged robots. Afterwards, use solidworks-2021 for 3D modeling to draw the legs and main structure of the robot. In terms of kinematic analysis, by studying the mechanism structure and motion characteristics of hexapod robot, the forward and inverse kinematic equations are derived, and the gait planning and motion control algorithms of the robot are analyzed in detail. These analyses provide a theoretical basis for the robot\u27s program and actual motion. In terms of hardware, a lightweight and high-performance hexapod robot hardware platform has been designed using mainstream controllers such as Borboardino and ultrasonic sensors. This hardware platform has excellent responsiveness and adaptability, and can efficiently move and operate in complex agricultural environments. In terms of software, a comprehensive control system has been developed, including motion planning, action execution, and obstacle avoidance modules. By integrating triangular gait technology and related algorithms, robot can achieve navigation and obstacle avoidance, and perform tasks such as crop planting and spraying in the agricultural field. The simulation file of the hexapod robot was established using CoppeliaSim software, achieving motion based on the robot body, six legs, and end effectors. Finally, a 3D-printer is used to print and assemble all components, and complete the design through debugging and verification. The hexapod robot is capable of autonomous cruising in farmland, completing tasks such as planting and watering crops, providing efficient and intelligent agricultural production solutions for farmers
Determination of sodium and potassium in Dan Hong injection by atomic absorption spectrometry
Get PDFTo establish and validate the determination method of the content of sodium ion and potassium ion in Dan Hong injection by atomic absorption spectrometry (AAS). [Methods] Microwave digestion system was applied to deteriorate samples, and the content of sodium ion and potassium ion was determined by AAS. [Results] The calibration curve of sodium was liner (r=0.9998) in the range from 0.1to0.6mg/L. The average recovery was 101.1% with RSD 1.8%. The limit of detection was 5.3μg/L. The calibration curve of potassium was liner (r=0.9998) in the range from 0.1 to 0.8mg/L. The average recovery was 99.8%with RSD 2.3%. The limit of detection was 7.7μg/L. The determination results of 10 batches Dan Hong injection sample showed that the content of sodium ion was 562.3 to 734.7 mg/L and potassium ion was 206.9 to 314.4mg/L. [Conclusion] The method is simple and accurate and can be used for determination of the contents of sodiumion and potassium ion in Dan Hong injection. The accurate quantitative determination method can be promoted to quality control of Dan Hong injectio
Study on the oxidation mechanism of micron- and nano-sized aluminum powders influenced by alumina shell
Get PDFThermal behaviors for aluminum particles at oxidative atmosphere gradually heating system were discussed. Heating micron- and nano-sized aluminum powders from room temperature to 1400℃ using thermal analysis method. The results showed that the reaction process for micron-sized aluminum particles can be divided into four stages which include the phase change of oxidized shell, increasing thickness of alumina shell, main broken shell oxidizing process and the phase change of alumina shell in high temperature. Thermal analysis for micro aluminum particles was carried out with shell thickness adjustments via ambient manual means. It turned out that the oxide layer thickness would have full limitation effects on the slow oxidation for micro aluminum particles with shell structure when it was increased above twice of the original thickness. The limitation effects of oxide shell thickness on the heating processes in gradually heating system were proposed. Humidity environment can make the thickness of alumina increase in a certain range when the particles are in nano-scale. Complete oxidation processes were observed but an increase of the oxidation temperature was identified
Applications of AI in Psychotherapy: An Innovative Tool
Get PDFThis paper explores the application and potential of artificial intelligence (AI) in psychological therapy as well as its implications for Chinese psychotherapy firm "JianDanXinLi" or otherwise known as SimpleTherapy. Through an analysis of several AI psychological therapy service platforms, it reveals the principles of integrating AI into modern psychotherapy and demonstrates that AI technology can serve as a flexible alternative and supplementary means for optimizing data in the therapeutic process. Although AI technology cannot fully replace human services, it can significantly expand and enhance the scope and effectiveness of therapy. Additionally, this paper discusses the challenges faced by AI technology in integrating psychological therapy, especially regarding issues of empathy
Esterification catalytic over Imidazolium Ionic Liquid Modified salt of phosphotungstic Acid catalyst
Get PDFA solid acid was prepared by the reaction of phosphotungstic acid (HPW)with 1-methy- limidazolium sulfobutyrolactone (MIMSB) and characterized by the methods of X-ray powder diffraction, FT-IR, potentiometric titration and SEM. Then the solid acid was employed for esterification to evaluate its acid-catalytic activity. Various reaction parameters, including catalyst dosage, reaction time, n-butanel/butyric acid molar ratio and reaction temperature were systematically examined. These results indicated that the prepared catalyst maintained the Keggin structure of the raw HPW, and had high acidity. The catalyst exhibited excellent catalytic activity in esterification of n-butyric acid and n-butanol.93. 4% conversion of n-butyric acid was obtained under the optimized reaction conditions. The catalyst also had good stability
Study on the electrostatic shedding and crushing characteristics of ethanol and diesel droplets
Get PDFThe study of electrostatic shedding and crushing characteristics of droplets is the basis of understanding electrostatic atomization, and the study of its shedding and crushing behavior in electrostatic field is conducted. Micropump drive is used to control the flow rate, electrostatic generation device to form a stable electric field, light lighting and high-speed camera to obtain the dynamic behavior of shedding and crushing process, and use digital image processing technology to extract the process parameters. The results show that: when the capillary tube diameter and flow are unchanged, when the electric field voltage is low, the droplet deviates and falls off, the diesel droplet is smaller than the ethanol; when the electric field voltage is moderate, the droplet is closed or deformed into wave strip; only when the flow rate increases and the electric field voltage is large, the average particle size of ethanol is smaller than diesel, indicating that the electrostatic atomization effect of ethanol with small surface tension is significantly better than that of diesel oil
Entropy Theory in the Context of Physics Education
Get PDFEntropy, initially a concept in thermodynamics describing the degree of disorder in a system, has been extended to information theory and non-equilibrium thermodynamics. The article proposes that the physical classroom teaching system can be viewed as a dissipative structure, promoting the orderly development of students\u27 cognition through openness, non-equilibrium states, and fluctuation mechanisms. Specific strategies include opening up teaching content and methods, creating non-equilibrium state experiments, introducing cognitive fluctuations, and utilizing non-linear effects. These approaches help to stimulate students\u27 desire for knowledge, optimize the teaching process, and achieve efficient physical classroom teaching