校园足球与思政教育协同演进的三重逻辑及未来展望

采用文献资料法和逻辑分析法,从历史逻辑、理论逻辑和实践逻辑三个维度探讨了校园足球与思政教育协同演进的必要性、可能性和实施策略。研究指出:解决“以体育人”难题、推进思政教育一体化建设以及实现教育现代化的协同发展是校园足球与思政教育协同演进的现实诉求;“人的全面发展”“具身认知”和“自组织”理论为协同演进提供了理论支撑;实践中,通过明确共同目标、构建协同机制、展现实践成效和追求系统生态,可实现校园足球与思政教育的深度融合。展望未来,通过校园足球与思政教育的协同演进,不仅可逐步改善中国足球的环境,还能激发多元教育主体的活力,持续提升教育改革的成效,为体育事业发展和教育现代化建设提供新思路。

MR技术应用于直肠癌术前T分期诊断的价值

目的探讨MR技术应用于直肠癌术前T分期诊断的价值。方法方便选取83例该院于2016年1月—2017年6月所收治的经手术及病理诊断确诊的直肠癌患者为研究对象,所有患者均行MR技术检查,以手术及病理诊断为标准,观察MR技术检查对于患者术前T期的灵敏度、特异度及诊断符合率。结果 MR技术检查诊断结果于T1~2期的灵敏度、特异度及诊断符合率分别为73.68%、92.19%、87.95%;T3期的灵敏度、特异度及诊断符合率分别为91.89%、86.86%、89.16%;T4期的灵敏度、特异度及诊断符合率分别为88.89%、100.00%、96.39%。结论 MR技术对于直肠癌术前T分期诊断的灵敏度、特异度及诊断符合率均较高,诊断结果接近于手术及病理学诊断结果,具较高准确性,可为直肠癌的临床诊断、手术方案的制定及术前术后的治疗提供可靠依据,具较高临床应用价值。

Total Fractionation and Analysis of Polysaccharides from Leaves of Panax ginseng C.A. Meyer

The water-soluble polysaccharides isolated from the leaves of Panax ginseng C. A. Meyer were totally fractionated into one neutral fraction（GLPN-1）, six acidic fractions（GLPN-2, GLPA-1a, GLPA-1b, GLPA-1c, GLPA-2 and GLPA-3） by a combination of ethanol precipitation, ion-exchange and gel permeation chromatography. All the fractions were analyzed by determining monosaccharide composition, molecular weight distribution. The resuits show that GLPN-1 was mainly composed of Gal（38.1%） and Ara（33.6%） and presumed to be an arabinogalactan. GLPA-1a, GLPA-1b and GLPA-2 mainly contained Gal, Ara, Rha and GalA. The amount of Gal and Ara acounted for over 50% of total sugar and the amount of Rha was more than 10%. The molar ratios of Rha/GalA in GLPA-1a, GLPA-1b and GLPA-2 were 1：1, 1：2 and 1：2.7, respectively, indicating that they belong to type-1 rhamnogalacturonan （RG-1）-rich pectin. GLPA-1c was mainly composed of GalA（78%）, belonging to homogalacturonan（HG）-rich pectin. GLPA-3 might be a glycoprotein.