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The creation and application of the volleyball referee gesture exercise
Full text linkThis article, in combination with the characteristics of the referee\u27s work in volleyball competitions and with reference to numerous examples of gesture exercise choreography, has created a set of 20 volleyball referee gestures exercises in accordance with the principles and patterns of radio calisthenics arrangement. The exercises have been promoted and applied in the volleyball specialized and general courses of nearly 30 classes across 10 grades at the School of Physical Education, Xinjiang Normal University, and have been improved based on feedback. Practice has proven that this set of volleyball referee gesture exercises is easy to learn, well-designed, interesting, and easy to promote. It has a positive effect and good results in helping students master the basic gestures of volleyball referees, the coordination of gestures and whistle sounds, and on-the-spot refereeing
Impact of NAC on inflammation and nutrition in hemodialysis
Full text link Objective: To assess whether N-Acetylcysteine (NAC)treatment can improve inflammatory markers and nutritional status in patients undergoing Maintenance Hemodialysis (MHD). Methods: A total of 71 patients who had been on hemodialysis for more than 6 months were selected and randomly divided into an NAC treatment group (NAC 600 mg, twice daily,41 cases) and a control group (no medication,30 cases). Routine clinical data were collected, and a 3-month observation period was initiated. Inflammatory markers, including high-sensitivity C-reactive protein (h s-CRP), interleukin-6(IL-6), interleukin-10(IL-10), tumor necrosis factor (TNF), and homocysteine levels, were measured before and after treatment. Nutritional indicators, such as hemoglobin, serum albumin, and prealbumin levels, were also assessed before and after treatment. Results: After 3 months of NAC treatment in hemodialysis patients, h s-CRP and IL-6 levels significantly decreased compared to pre-treatment levels(both P<0.01).Homocysteine levels also significantly decreased(P<0.05).Hemoglobin, serum albumin, and prealbumin levels significantly increased(P<0.05 and P<0.01,respectively).The reduction in h s-CRP levels in female MHD patients was significantly greater than that in male patients(P<0.01).Conclusion: NAC treatment can reduce inflammatory marker levels and improve nutritional status in hemodialysis patients, thereby benefiting these patients from anti-inflammatory therapy
Research progress on Nano-Tungsten oxide gas sensors
Full text linkIn the field of research on the detection of various harmful gases, nano-semiconductor metal oxide gas sensors hold a very important position. As an n-type semiconductor metal oxide, tungsten oxide has become a research focus and hotspot in gas-sensitive materials in recent years due to its unique structural and performance characteristics. This paper briefly introduces the gas-sensing response mechanism of tungsten oxide-based gas-sensitive materials, summarizes the main processes and directions for improving the gas-sensing performance of nano-tungsten oxide materials in recent years, and finally points out its own shortcomings and future research and development directions
Study on Biology and Ecology of Rare Tree Acer miaotaiense
Full text linkAcer miaotaiense is a third-grade nationally protected plant in China. It was originally recorded as sporadically distributed in a few areas of the western section of the Qin ling Mountains. In recent years, a wild population of Acer miaotaiense was discovered for the first time in the Fu Niu Mountains of Henan Province. This discovery has refined and corrected the delineation of the distribution range of this species in China over the past half-century, and it is of great significance for research on its origin, resource protection, and cultivation techniques. The morphological characteristics and biological traits of Acer miaotaiense were observed and described, and its wild populations were investigated. The results show that the species has stringent habitat requirements. Although it is one of the dominant species in the surveyed community, its age structure is extremely incomplete, and the population shows a trend of gradual decline. This paper also explores the reasons for the endangerment of Acer miaotaiense and proposes conservation strategies
The diagnostic value of combined TCD and CTA in intracranial arterial stenosis
Full text linkTo investigate the clinical diagnostic value of computed tomographic angiography (CTA)and transcranial Doppler (TCD)used separately and in combination for intracranial arterial stenosis. Methods: A total of 47 patients diagnosed with acute ischemic stroke at the Second Affiliated Hospital of Qiqihar Medical University from June 2015 to June 2016 were selected as the study subjects. All patients underwent both TCD and CTA examinations, followed by digital subtraction angiography (DSA). Results: Using DSA as the gold standard, the results of TCD and CTA were evaluated. Among the 47 patients, a total of 67 intracranial arterial stenoses were detected by DSA.TCD identified 53 stenoses, CTA identified 52 stenoses, and the combined diagnosis of CTA and TCD identified 64 stenoses. The combined diagnosis of CTA and TCD was significantly higher than that of a single examination method.().Conclusion: The combined diagnosis of intracranial arterial stenosis using TCD and CTA can avoid missed diagnoses and provides a reliable basis for clinical decision-making, offering an objective foundation for further clinical treatment
The effect of rAd-p53+cisplatin on gastric cancer cell growth and KAI1/CD82 expression
Full text linkObjective To investigate the effects of rAd-p53 and cisplatin (DDP)alone or in combination on the proliferation, apoptosis, and KAI1/CD82 protein expression of human gastric cancer SGC7901 cells. Methods SGC7901 cells were treated with rAd-p53, DDP, or their combination for 24,48, and 72 hours. The proliferation activity of SGC7901 cells was measured using the CCK-8 assay. Apoptosis rates were determined by flow cytometry, and the expression of KAI1/CD82 protein was detected by immunohistochemistry. Results Both rAd-p53 and DDP alone, as well as their combination, inhibited the proliferation of SGC7901 cells in a dose-and time-dependent manner. The proliferation inhibition rate of the combination group was significantly higher than that of the single-agent groups, with statistically significant differences compared to the negative control group(P<0.05).After 48 hours of treatment with rAd-p53,DDP,or their combination, the apoptosis rates were 36.94%±0.78%,28.79%±2.37%,and 69.26%±0.63%,respectively,all of which were significantly higher than that of the negative control group(16.72%±1.54%,P<0.05).Both rAd-p53 and DDP alone, as well as their combination, upregulated the expression of KAI1/CD82 protein, with the combination group showing the most significant increase. Conclusion Both rAd-p53 and DDP alone, as well as their combination, can inhibit the growth of gastric cancer SGC7901 cells and induce apoptosis. The combination of the two drugs enhances the inhibitory effect on gastric cancer cells. rAd-p53 may induce apoptosis in SGC7901 cells by upregulating the expression of KAI1/CD82, thereby enhancing the antitumor effect of DDP
Research on badminton players\u27 specialized fitness training
No full textThe relationship between specialized physical fitness and skills has always been a controversial issue in China\u27s badminton community. The components of badminton\u27s specialized physical fitness include specialized speed, strength, endurance, and agility. The relationship between the four basic qualities of strength, speed, endurance, and agility is summarized as follows: speed is the key, strength and agility are the foundation, and endurance is the guarantee
The artistic conception expressed through brush and ink in Chinese painting
Full text linkChinese painting brush and ink continuously absorb the connotations, wisdom of literati and the classic cultures from both China and abroad. Through different arduous explorations and bold attempts by painters of successive dynasties, the connotation of Chinese painting brush and ink has been developed and gradually matured, thus leading Chinese painting brush and ink to the way of charm. Chinese painting pays great attention to the expression of artistic conception in the picture. Only by reflecting the painter\u27s own thoughts and emotions in the picture can a touching artistic conception be achieved, realizing the integration of brush and ink with the scene. Chinese painting brush and ink constantly inherit the most excellent cultures of the Chinese nation and carry the vitality of Chinese national culture
Study on physical strength of 8-14-year-old rhythmic gymnasts in Sichuan
Full text linkThis study conducted relevant physical strength tests on 101 young rhythmic gymnasts aged 8-14 in Sichuan Province, covering upper limb strength, trunk strength, and lower limb strength. The collected data were integrated using mathematical statistics and analyzed logically to reveal the characteristics of strength training for rhythmic gymnasts aged 8-14, as well as the development features of static and dynamic strength at different age stages. The findings provide suggestions for improving the physical strength training of young rhythmic gymnasts in Sichuan Province
Survey and analysis of the causes of sports injuries among college volleyball players
Full text linkThis study employed questionnaire surveys, mathematical statistics, literature review, and interviews to investigate sports injuries and analyze their causes among 129 volleyball players from six sports colleges participating in the 13th Provincial College Games. The results indicated that the primary sites of injury were the finger and wrist joints, shoulder joints, lumbar and back muscles, knee joints, and ankles. Additionally, there were certain differences in injury locations among players in different positions. The main causes of injury were identified as a lack of scientific approach in training and organization, insufficient warm-up activities before training and matches, poor physical condition, and adverse psychological states. It is recommended that prevention and treatment of sports injuries should be integrated into training and competition, team organization and management, and daily psychological and ideological education to minimize the incidence of injuries among players