一族函数的相邻系数问题     

叶中秋  刘文军 《九江师专学报》2003,22(5):1-5,9

此文研究单叶函数的Goluzin问题，拓广了胡克教授中关于单叶函数相邻系数的一个重要定理。当fk(z)=z ∑∞n=1n 1an 1^(k)z^kn 1∈Sc(α)时，得到‖an 1^(k)|—|an^(k)‖的准确估计。  相似文献   

Serum protein fingerprinting coupled with artificial neural network distinguishes glioma from healthy population or brain benign tumor   总被引：6，自引：0，他引：6  

Liu J  Zheng S  Yu JK  Zhang JM  Chen Z 《Journal of Zhejiang University. Science. B》2005,6(1):4-10

To screen and evaluate protein biomarkers for the detection of gliomas (Astrocytoma grade Ⅰ-Ⅳ) from healthy individuals and gliomas from brain benign tumors by using surface enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) coupled with an artificial neural network (ANN) algorithm. SELDI-TOF-MS protein fingerprinting of serum from 105 brain tumor patients and healthy individuals, included 28 patients with glioma (Astrocytoma Ⅰ-Ⅳ), 37 patients with brain benign tumor, and 40 age-matched healthy individuals. Two thirds of the total samples of every compared pair as training set were used to set up discriminating patterns, and one third of total samples of every compared pair as test set were used to cross-validate; simultaneously, discriminate-cluster analysis derived SPSS 10.0 software was used to compare Astrocytoma grade Ⅰ-Ⅱ with grade Ⅲ-Ⅳ ones. An accuracy of 95.7%, sensitivity of 88.9%, specificity of 100%, positive predictive value of 90% and negative predictive value of 100% were obtained in a blinded test set comparing gliomas patients with healthy individuals; an accuracy of 86.4%, sensitivity of 88.9%, specificity of 84.6%, positive predictive value of 90% and negative predictive value of 85.7% were obtained when patient's gliomas was compared with benign brain tumor. Total accuracy of 85.7%, accuracy of grade Ⅰ-Ⅱ Astrocytoma was 86.7%, accuracy ofⅢ-Ⅳ Astrocytoma was 84.6% were obtained when grade Ⅰ-Ⅱ Astrocytoma was compared with grade Ⅲ-Ⅳ ones (discriminant analysis). SELDI-TOF-MS combined with bioinformatics tools, could greatly facilitate the discovery of better biomarkers. The high sensitivity and specificity achieved by the use of selected biomarkers showed great potential application for the discrimination of gliomas patients from healthy individuals and glioma from brain benign tumors.  相似文献   

关于一类由积分算子定义的解析函数族的性质     

曾婷  高纯一  王智刚 《怀化学院学报》2007,(4)

引入一类由积分算子定义的解析函数族SDI(α,β,σ),得到了它的系数估计、包含关系和积分表达式等性质,所得到的结果推广了一些相关文献的结果.  相似文献   

关于某些多叶解析函数     

杨定恭 《常熟理工学院学报》2002,16(2):1-8

设Ap(k) (p,k为正整数 )表示单位圆盘E ={z:｜z｜<1 }内形为f(z) =zp+∑∞n =p+kanzn的解析函数类 ,Sp(k)表示由E内p叶星形函数组成的Ap(k)的子类 .本文导出含有Ap(k)中函数的几个不等式 ,并且给出函数属于类Sp(k)的充分条件  相似文献   

一类多叶解析函数的性质     

徐能  朱惠秋 《常熟理工学院学报》2012,(4):16-23

设A_p,n（p,n是正整数）表示单位开圆盘U={z:|z|<1}内形为f（z）=z^p+sum（a_kz^k）from k=p+n to ∞的解析函数类.引进A_p,n的子类H_p,n（A,B,α,λ）,导出一些有趣的性质,研究类H_p,n（A,B,α,1）中函数的p叶近于凸性和p叶星形性.  相似文献   

一类星形函数的逆函数系数估计式     

周玛莉  向雪萍 《金华职业技术学院学报》2007,7(4):88-89

依据单叶解析函数系数估计式的证明思路,本文从一类特殊的单叶解析函数--星形函数的表达式出发,利用数学归纳法证明此类函数的逆函数的系数估计式.  相似文献   

关于一类由积分算子定义的解析函数族的性质     

曾婷  高纯一  王智刚 《怀化学院学报》2007,26(11):19-22

引入一类由积分算子定义的解析函数族SDI（α,β,σ），得到了它的系数估计、包含关系和积分表达式等性质，所得到的结果推广了一些相关文献的结果．  相似文献   

运动对不同性别抑郁模型小鼠海马脑区GFAP、s100β、Cx43蛋白表达水平的影响     

魏宏文  矫玮  戈含笑  张有志  薛瑞 《北京体育大学学报》2018,41(2):53-58

摘要：目的：观察运动对不同性别抑郁模型小鼠行为学的影响,并从星形胶质细胞中重要蛋白表达的差异分析星形胶质细胞在运动抗抑郁中的作用。方法：雄、雌各40只小鼠根据体重半随机平均分为对照组（Control,Con）和运动组（Exercise,Exe）。小鼠转轮运动28 d后,对照组和运动组按照体重平均分为无电击组（No Inescapable shock,NIS）和不可逃避电击（Inescapable shock,IS）组。采用自发活动、获得性无助、悬尾实验和强迫游泳实验,观察运动对不同性别抑郁模型小鼠行为学的影响,应用western-blotting法检测小鼠海马GFAP、s100β、Cx43蛋白表达水平。结果：1）相同性别的小鼠,其对照组与运动组之间的自发活动水平无显著性差异（P>0.05）;2）雄鼠和雌鼠对照组电击后逃避失败次数、逃避失败潜伏期均显著性增加（P<0.01、P<0.001）;雄鼠电击后运动组逃避失败次数、逃避失败潜伏期均显著低于雄鼠对照组（P<0.001）;雌鼠电击后对照组逃避失败次数、逃避失败潜伏期均显著高于雄鼠（P<0.05）;3）雄鼠和雌鼠的运动组与正常对照组相比,小鼠悬尾与强迫游泳的不动时间均显著缩短（P<0.05）;4）运动后雄鼠和雌鼠的海马GFAP、s100β、Cx43的蛋白表达水平均分别显著高于安静对照组（P<0.05~0.001）,但雌、雄鼠之间均无显著性差异（P>0.05）。结论：1）运动在获得性无助和行为绝望模型中均显示抗抑郁的行为学效应,相对于雌鼠,运动对于雄鼠抗抑郁效果更加明显;2）运动抗抑郁的机制可能在于运动增强星形胶质细胞的功能、加强星形胶质细胞与神经元的双向通讯。  相似文献   

具非线性二阶导数项的Schrodinger方程混合问题的爆破性质   总被引：1，自引：0，他引：1  

张健 《达县师专学报》1994,4(2):29-36

  相似文献   

Construction of a hepatic stellate cells subtracted cDNA library of differentially expressed genes in normal mice and mice with Schistosomiasis japonica     

Zheng M  Wu YJ  Cai WM  Weng HL  Liu RH 《Journal of Zhejiang University. Science. B》2005,6(4):280-287

To construct a hepatic stellate cells (HSCs) subtracted cDNA library to find differentially expressed genes in normal mice and mice infected with Schistosomajaponicum (S. japonicum). Suppression subtractive hybridization (SSH) was used. The cDNA fragments of normal mouse were compared to those of schistosoma-infected mice to find differentially expressed genes. Then differentially expressed cDNA fragments were directly inserted into T/A cloning vector to set up the subtractive library. Amplification of the library was carried out with transformation of DH5α. The amplified library contained more than 400 positive bacterial clones, which were then hybridized with forward and backward subtracted probes for differential screening, One hundred positive bacterial clones were randomly selected for sequencing and BLAST analysis, Finally, virtual Northern Blot confirmed such differential expression. The subtracted cDNA library of differentially expressed genes of HSCs was constructed successfully, the library is efficient and lays foundation for screening and cloning new and specific genes of schistosomiasis.  相似文献