不定同余方程X^2n＋（X＋1）^2n＋…＋（X＋h）^2n≡（X＋h＋1）^2n（mod1…

本文证明了：同余方程ｘ＾２ｎ＋（ｘ＋１）＾２ｎ＋…＋（ｘ＋ｈ）＾２ｎ≡（ｘ＋ｈ＋１）＾２ｎ（ｍｏｄ １７）有整数解的充分必要条件是（１）若ｎ≡１（ｍｏｄ ８），则ｈ≠３，４，５，６，１０，１１，１３（ｍｏｄ １７）；（２）若ｎ≡２（ｍｏｄ８），则ｈ≠３，４，８，９，１０，１４（ｍｏｄ １７）；（３）若ｎ≡３（ｍｏｄ ８），则ｈ≠６，１０，１１，（ｍｏｄ １７）．     

解同余方程a1x1＋a2x2＋…＋anxn≡b（modm）

用矩阵的初等变换给出了同余方程∑∧ni=1aixi≡b（modm）有解的充分与必要条件的新的证明，而且在这个证明中提供了求解的方法。     

（2＋1）多光子电离的理论公式

采用量子力学微扰理论,推导出了(2 1)共振增强多光子电离的理论公式.可以清楚地看到在双光子共振的条件下,电离效率得到加强;而且利用该公式可以模拟(2 1)多光子电离的实验结果,进而了解多光子电离的过程.     

图ω（4g,4h＋3）的（r1,r2,···,r（4g,4h＋2））-冠的优美性

给出了ω4g,4h＋3的（r1,r2,…,r4g,4h＋2）-冠的定义,讨论了ω4g,4h＋3的（r1,r2,…,r4g,4h＋2）-冠的优美性,用构造性的方法给出了一些特殊的ω4g,4h＋3的（r1,r2,…,r4g,4h＋2）-冠的优美标号。证明了一些特殊的ω4g,4h＋3的（r1,r2,…,r4g,4h＋2）-冠是交错图。     

关于方程y‘=1—y^2＋v（1＋v）／x^2解的渐近性态

利用幂级数理论和微积分理论研究一个古典的Ｒｉｃｃａｔｉ方程的通解问题及其渐近性态，并给出了此方程仅有的两个有理形式的特解。     

5＋2=6＋1

安然自述： 我们一家人都很喜欢郊游，有时父母也会一起去。现在孩子也逐渐长大了，所以决定买辆MPV，主要是对我来说比较实用。尽管不是所有座椅都会被用到，但空间很富裕，可以备不时之需。     

3—（15＋20＋15）m连续刚构桥的设计

本文介绍了中小跨径连续刚构桥的设计思路以及在电算过程中的一些处理方法和技巧，并对其进行了技术经济分析。     

关于丢番图方程(xm-1)/(x-1)=yn和(xm+1)/(x+1)=yn(2m)

用初等方法讨论了方程(xm-1)/(x-1)=yn和(xm+1)/(x+1)=yn(2m)的一些特殊情况，得到了其解的一些结构定理。     

Stability of a Class of Linear Systems on Hilbert Space

Thelinearcontrolsystemunderstudyisddtx(t)=Ax(t) Bu(t), t>0x(0)=x0,(1)whereAisthegeneratorofanexponentiallystableC semigroupT(t)inaHilbertspaceX, andBisaboundedoperatorfromtheHilbertspaceYtoX.Eq. (1) hasreceivedmuchattentionunderthehy pothesisthatAgenerate…     

THE STUDY ON RELATION BETWEEN CD1a^＋ CELLS AND INFILTRATIVE CD3^＋ AND CD8^＋ CELLS IN RENAL TISSUE OF GLOMERULONEPHRITIS

Objective To discuss the role of dendritic cells (DCs) in cellular immunity pathogenesis of glomerulonephritls (GN). Methods 114 patients with GN were selected randomly and divided into two groups,primary GN (pGN) and secondry GN (sGN). CDIa^ , CD3^ and CD8^ cells in bioptic renal tissues were examine dy immunohistochemically. The distribution of CDla cells and the infiltration of CD3^ and CD8^ cells in renal tissues were observed. Results There was no significant difference of CDIa^ , CD3^ , and CD8^ cells between pGN and sGN group (P＞0. 05). CDIa^ cells had significant positive correlation with the infiltrative CD3^ and CD8 cells,respectively (P＜0.01). The infiltrative CD3^ cells had significant positive correlation with the CD8 cells in the same area, respectively (P＜0.01). CD1a^ cells, CD3^ cells infiltrating in both glomeruli and renal interstitial tissues, and CD8^ cells only infiltrating in renal interstitial tissues, all of them had significant positive correlation with the degree of glomerular proliferation, respectively (P＜0.05). The infiltrative CD3^ and CD8^ cells in renal interstitial tissues had significant positive correlation with the degree of glomerular sclerosis and the lesion degree of renal tubule and interstitial, respectively (P~ 0. 05). There were significant positive correlation between CDla cells and the lesion degree of renal interstitial (P＜0.05). Collusion DCs could activate T lymphocyte by presenting antigen, then the activated T lymphocyte participate in the pathogenesls of GN through releasing cytokine and/or directly damaging the renal tubule and interstitial, which produce more serious glomeralar lesion.     

医学本科生学习成绩影响因素的调查分析

以医学系四年级学生临床综合考试成绩和操行总评得分为因变量，与性别、年龄、民族、血型、性格类型、心理年龄、气质、城乡等自变量进行单因素显著性检验、相关及多因素逐步回归分析。结果显示：临床综合考试成绩和操行总评得分分别在男、女性别中出现明显差异，即女性都高于男性（Ｐ均小于０．０００１）；在汉族与少数民族之间其差别也很明显，前者显著高于后者（Ｐ＜０．０００３和Ｐ＜０．０００２）。单因素相关及多因素逐步回归表明，临床考试成绩（Ｙ１）与操行总评得分（Ｙ２）、年龄（Ｘ２）、性别（Ｘ１）、民族（Ｘ３）之间依次出现不同程度的联系（Ｆ值的概率依次小于０．０００１、０．０００１、０．０１４５和０．０３１８）。操行总评得分（Ｙ２）与临床综合考试成绩（Ｙ１）、民族（Ｘ３）、性别（Ｘ１）、气质（Ｘ７）之间亦存在联系（Ｆ值的概率依次小于０．０００１、０．００１０、０．００３５和０．０３４６）。通过学生学习成绩和操行总评得分两因变量与诸多自变量出现差别的因素的研究，无疑对提高教学质量、改进教学方法、完善教学管理、开发学生智商、挖掘学习潜力、培养学生成为德、智、体全面发展的人才有着现实的指导意义。     

酪酪肽对胰腺癌细胞生长的抑制作用及Y受体在胰腺癌细胞的表达

目的 观察酪酪肽(PYY)对体外培养的人胰腺癌Miapaca-2细胞的生长抑制作用及Y受体在胰腺癌细胞的表达.方法 不同浓度的PYY分别作用于体外常规培养Miapaca-2细胞,采用MTT比色法检测细胞增殖情况,光镜观察细胞形态变化.RT-PCR法检测胰腺癌细胞Y受体亚型Y1、Y2、Y5mRNA表达.结果 PYY对Mi...     

高职土建类学生毕业设计对接BIM“1+X”证书的实践及思考

随着"1+X"建筑信息模型BIM职业技能等级证书考评大纲工程管理模块的发布,课程应与模块里的要求进行相应的对接。通过分析考评大纲与课程及软件的对应关系,定义了毕业设计的流程图,在实践中发现问题并解决问题,对相应的课程进行改革,使课程与模块要求深度融合,达到课改的目的。     

“1+X”证书制度试点下的高职物流管理专业人才培养思考

党的十九大报告对新时期职业教育发展提出了新要求,"1+X"证书制度应运而生。物流业是支撑国民经济发展的基础性、战略性、先导性产业,如何培养证书制度下与时俱进的物流专业人才,是高职院校面临的一个重要课题。本文试从教育目标、培养模式、教学模式和评价体系4个角度,讨论如何在证书制度下审视和改进自身的不足,同时为高职院校物流管理专业的人才培养提供建议。     

Normal reference value of forced vital capacity of Chinese younger women and geographical factors

Objective To supply a scientific basis for standardizing the normal reference value of forced vital capacity (FVC) of Chinese younger women. Methods We studied the relationship between the normal reference value of 21767 samples of FVC of younger women and eight geographical factors in 157 areas in China. Results It was found that the correlation between geographical factors and the normal reference value of FVC of younger women was quite significant (F=5.884, P=0.000). By adopting the method of mathematical regression analysis, one regression equation was inferred: =3.146+0.00006919X1+0.01315X4-0.006966X6+0.09524X8±0.254. In the above equation, is the normal reference value of younger women' FVC (L); X1 is the altitude (m); X4 is the annual mean air temperature (℃); X6 is the annual mean relative humidity (%); X8 is the annual mean wind speed (m/s); 0.254 is the value of the residual standard deviation. Conclusion If geographical values are obtained in a certain area, the normal reference value of FVC of younger women in this area can be obtained by using the regression equation. Furthermore, according to the geographical factors, China can be divided into eight regions: Northeast China Region, North China Region, Shanxi-Shaanxi-Inner Mongolia Region, middle and lower reaches of the Yangzte River Region, Southeast China Region, Northwest China Region, Southwest China Region, and Qinghai-Tibet Plateau Region.     

原发性高血压患者红细胞膜胰岛素受体与钙、镁代谢的关系

目的　探讨原发性高血压 (EH)患者钙、镁离子代谢与红细胞膜胰岛素受体 (EIR)之间的联系及在胰岛素抵抗中的作用。方法　观察 47例EH病人及 30例正常对照红细胞内Ca2 +、Mg2 +含量 ,2 4h尿Ca2 +、Mg2 +排泄量 ,红细胞膜Ca2 +,Mg2 + ATP酶和Na+,K+ ATP酶的活性变化。结果　①EH组患者胰岛素敏感指数 (ISI)、红细胞内Mg2 +含量、2 4h尿Mg2 +排泄量、EIR的低亲合位点数 (RT2 )、Ca2 +,Mg2 + ATP酶和Na+,K+ ATP酶活性减低。红细胞内Ca2 +含量、EIR的解离常数KD2 增高 (P <0 .0 5 )。②EH组ISI与RT2 、红细胞内Mg2 +含量呈正相关 ;RT2 与红细胞内Mg2 +含量、2 4h尿Ca2 +、Mg2 +排泄量呈正相关。③以RT2 为应变量 ,红细胞内Mg2 +含量 (X1 )、2 4h尿Ca2 +(X2 )、2 4h尿Mg2 +排泄量 (X3)为自变量的多元线性逐步回归分析中 ,X1 、X2 进入方程。结论　钙、镁代谢障碍可能是EH胰岛素抵抗时红细胞膜胰岛素低亲和受体水平下调的主要因素。