应用同伦映射讨论算子方程解的存在性     

陈文虎  郭爱主 《湖南师范大学教育科学学报》1996,(2)

本文应用凝聚场拓扩度的同伦不变性，讨论某些具有边界条件的算子方程解的存在性，给出了Ａｌｔｍａｎ定理的几个推广以及在Ｈｉｌｂｅｒｔ空间中凝聚映象的锐角原理  相似文献   

Banach空间中单调算子的性质     

刘晓奇 《湘潭师范学院学报(社会科学版)》1992,(6)

设X为Banach空间,X~*是它的共轭空间,在X自反的情形下,关于X的子集D到X~*的单调算子成立锐角原理.本文对一般Banach空间X,考虑X~*的子集A到X的单调算子,不需要假设X及X~*自反,证明了单调算子的锐角原理,Minty-Browder定理及强单调映象原理.  相似文献   

不同运动量急性运动对红细胞免疫功能的影响   总被引：1，自引：0，他引：1  

宋亚军  郝梅 《安徽体育科技》1999,(1)

通过对比观察不同运动量急性运动后及恢复期红细胞免疫功能的变化发现,三种不同运动量急性运动后,RBC-C3bR活性与安静相比显著下降,其下降程度与运动量大小呈正依存关系;运动结束后即转入恢复过程,至运动后3小时,表现为运动量愈大,其恢复速度愈慢,反之亦然。运动后15h均恢复到安静时水平,小运动量运动对RBC-IC花环率影响不大,随着运动量加大,RBC-IC花环率显著增高,45分钟组运动后及恢复期RBC－C3bR花环率和RBC-IC花环率呈现显著负相关关系。  相似文献   

模拟高原环境下自行车驴友急性骑行能力研究*     

蓝道忠  翁锡全  胡婧  周柏星  黄丽英 《广州体育学院学报》2015,35(3):86-89

目的:探讨模拟高原环境下急性骑行对自行车驴友运动能力的影响。方法:受试对象为7名华南农业大学一年级男性学生,平均年龄19.80±0.83岁,为自行车驴友,没有高原旅行经历。受试者分别在常氧环境和模拟常压低氧环境(氧含量16.8%)进行踏功率自行车运动,强度从50W(50rpm)开始,每3min递增50W至250W,然后要求受试者以最大能力运动至力竭,测试指标包括运动前、每级负荷后即刻和运动后心率、RPE、血乳酸及力竭时间。结果:两种环境下的心率与RPE均随着运动强度的增大而呈上升趋势,在模拟高原环境下从150W至250W以及力竭后心率上升幅度高于常氧,而RPE从150W后至运动结束时也高于常氧环境,但均无统计学差异(P>0.05),并且力竭时间非常显著性缩短(P<0.01)。结论:高原环境下自行车驴友骑行能力有一定下降,提示自行车驴友初入高原时要适当降低骑行强度及作适当的休息。  相似文献   

血必净在急性有机磷农药中毒中的应用     

缪小莉 《泰州职业技术学院学报》2010,10(3):34-35,59

目的观察血必净注射液在治疗急性有机磷农药中毒时的疗效。方法将82例急性有机磷农药中毒患者随机分为血必净治疗组（40例）与对照组（42例）,在正规使用阿托品及胆碱酯酶复能剂治疗的基础上,治疗组加用血必净100ml静脉点滴,每天一次,共3天,50ml静脉点滴,每天一次,共4天,总疗程一周。观察治疗过程中两组间全血胆碱酯酶及C反应蛋白差别,统计平均住院时间及死亡率。结果治疗前后,血必净治疗组及对照组的全血胆碱酯酶均有恢复,且治疗组较对照组恢复速度快（P〈O．05）。在C反应蛋白水平治疗后第3、4天数值较前均有所改善（P〈0．05）,治疗组改善更著（P〈O．05）。治疗组平均住院时间明显少于对照组（P〈O．05）。结论血必净注射液能有效促进血胆碱酯酶恢复,较好调控机体炎症反应过程,改善SIRS症状,缩短住院时间,取得满意的疗效。  相似文献   

急性亚极量运动24h后机体血清免疫抑制蛋白的变化     

李玉周  王蕊  矫玮  宋德懋 《北京体育大学学报》2010,(12)

探讨急性亚极量运动诱发机体免疫抑制蛋白(Immune Suppressive Protein of Stress,ISPS)出现的最短时间。方法:以北京体育大学研究生院8名健康学生为研究对象,实施急性亚极量强度跑台运动,受试者分别于运动前、运动后24 h无菌采集静脉血进行指标测定。结果发现,急性亚极量运动后24 h机体内ISPS水平升高,证实在急性运动后短至24 hISPS就能在人体内被诱导出现。结论:与运动前相比,急性亚极量运动应激24 h后,受试者血清对正常小鼠ConA诱导的淋巴细胞增殖具有明显的抑制作用,是血清中ISPS蛋白水平升高引起。  相似文献   

Advances in researches on the immune dysregulation and therapy of severe acute pancreatitis     

Xi-ping Zhang  Han-qing Chen  Fang Liu  Jie Zhang 《Journal of Zhejiang University. Science. B》2009,10(7):493-498

During the development and progression of severe acute pancreatitis (SAP), conspicuous immune dysregulation develops, which is mainly manifested as excessive immune response in the early stage and immunosuppression in the late stage.This process involves complex changes in a variety of immune molecules and cells, such as cytokines, complements, lymphocytes,and leukocytes. With the gradual deepening of studies on the development and progression of SAP, the role of immune dysregulation in the pathogenesis of SAP has attracted more and more attention. In this article, we review the advances in research on the immune dysregulation in SAP and the immunotherapy of this disease through exploring the formation of excessive immune response and immune suppression as well as their mutual transformation.  相似文献   

Case Report: CD19-positive acute myeloblastic leukemia with trisomy 21 as a sole acquired karyotypic abnormality     

《Journal of Zhejiang University. Science. B》2009,10(11)

We report that a 63-year-old Chinese female had acute myeloblastic leukemia (AML) in which trisomy 21 (+21) was found as the sole acquired karyotypic abnormality. The blasts were positive for myeloperoxidase, and the immunophenotype was positive for cluster of differentiation 19 (CDI9), CD33, CD34, and human leukocyte antigens (HLA)-DR. The chromosomal analysis of bone marrow showed 47,XX,+21 [2]/46,XX[18]. Fluorescent in situ hybridization (FISH) showed that three copies of AML1 were situated in separate chromosomes, and that t(8;21) was negative. The patient did not have any features of Down syndrome. A diagnosis of CD19-positive AML-M5 was established with trisomy 21 as a sole acquired karyotypic abnormality. The patient did not respond well to chemotherapy and died three months after the diagnosis. This is the first reported case of CD19-positive AM L with trisomy 21 as the sole cytogenetic abnormality. The possible prognostic significance of the finding in AML with +21 as the sole acquired karyotypic abnormality was discussed.  相似文献   

CD19-positive acute myeloblastic leukemia with trisomy 21 as a sole acquired karyotypic abnormality     

Hua-feng Wang  Yi-zhi Cheng  Huan-ping Wang  Zhi-mei Chen  Ji-yu Lou  Jie Jin 《Journal of Zhejiang University. Science. B》2009,10(11):833-838

We report that a 63-year-old Chinese female had acute myeloblastic leukemia (AML) in which trisomy 21 (+21) was found as the sole acquired karyotypic abnormality. The blasts were positive for myeloperoxidase, and the immunophenotype was positive for cluster of differentiation 19 (CD19), CD33, CD34, and human leukocyte antigens (HLA)-DR. The chromosomal analysis of bone marrow showed 47,XX,+21[2]/46,XX[18]. Fluorescent in situ hybridization (FISH) showed that three copies of AML1 were situated in separate chromosomes, and that t(8;21) was negative. The patient did not have any features of Down syndrome. A diagnosis of CD19-positive AML-M5 was established with trisomy 21 as a sole acquired karyotypic abnormality. The patient did not respond well to chemotherapy and died three months after the diagnosis. This is the first reported case of CD19-positive AML with trisomy 21 as the sole cytogenetic abnormality. The possible prognostic significance of the finding in AML with +21 as the sole acquired karyotypic abnormality was discussed.  相似文献   

基于高校篮球训练中学生指关节损伤的调查及应对策略     

刘睿 《中国科教创新导刊》2009,(7):212-213

高校篮球课中学生的手指关节在训练中极容易发生损伤,作者运用问卷调查法、文献资料法、数据分析法、逻辑分析法,对跨省两高校学生在篮球技术课学习过程中手指关节急性损伤的成因和对策进行了分析,最后探求出了一些避免手指关节急性损伤的具体措施,旨为师生提供参考。  相似文献