期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
Some of the Chemical and Physical Characteristics of the Graff River in Kut City, Iraq
1
作者 Salih Mahdi Ali Imad Kazem Ali 《Open Journal of Modern Hydrology》 CAS 2024年第1期56-67,共12页
Some of the chemical and physical water qualities of the Graff River in the city of Kut were studied, and for two sites of the river, One was at the Crimea site, the other in the Jihad district, and for the period fro... Some of the chemical and physical water qualities of the Graff River in the city of Kut were studied, and for two sites of the river, One was at the Crimea site, the other in the Jihad district, and for the period from October/2018 to March/2019, Seven variables of river water have been analyzed: temperature PH, electrical conductivity, TDS, turbidity, alkaline, and chloride. The results showed that most of the chemical and physical water properties of the river were in normal proportions and did not rise, except for the turbidity, which was at a very high level, and that the pH values were close to the basal side. The results of the statistical analysis revealed positive significant relationships between the pH and (chloride and TDS). On the other hand, between electrical conductivity and both previous variables as well. And a negative significant connection between temperature and alkaline. 展开更多
关键词 Graff River kut City Iraq Chemical Characteristics Physical Characteristics
下载PDF
DNA end binding activity and Ku70/80 heterodimer expression in human colorectal tumor 被引量:4
2
作者 Paola Mazzarelli Paola Parrella +13 位作者 Davide Seripa Emanuela Signori Giuseppe Perrone Carla Rabitti Domenico Borzomati Armando Gabbrielli Maria Giovanna Matera Carolina Gravina Marco Caricato Maria Luana Poeta Monica Rinaldi Sergio Valeri Roberto Coppola Vito Michele Fazio 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第42期6694-6700,共7页
AIM: TO determine the DNA binding activity and protein levels of the Ku70/80 heterodimer, the functional mediator of the NHEJ activity, in human colorectal carcinogenesis. METHODS: The Ku70/80 DNA-binding activity w... AIM: TO determine the DNA binding activity and protein levels of the Ku70/80 heterodimer, the functional mediator of the NHEJ activity, in human colorectal carcinogenesis. METHODS: The Ku70/80 DNA-binding activity was determined by electrophoretic mobility shift assays in 20 colon adenoma and 15 colorectal cancer samples as well as matched normal colonic tissues. Nuclear and cytoplasmic protein expression was determined by immunohistochemistry and Western blot analysis. RESULTS: A statistical found in both adenomas y significant difference was and carcinomas as compared to matched normal colonic mucosa (P〈0.00). However, changes in binding activity were not homogenous with approximately 50% of the tumors showing a clear increase in the binding activity, 30% displaying a modest increase and 15% showing a decrease of the activity.Tumors, with increased DNA-binding activity, also showed a statistically significant increase in Ku70 and Ku86 nuclear expression, as determined by Western blot and immunohistochemical analyses (P〈0.001). Cytoplasmic protein expression was found in pathological samples, but not in normal tissues either from tumor patients or from healthy subjects. CONCLUSION: Overall, our DNA-binding activity and protein level are consistent with a substantial activation of the NHEJ pathway in colorectal tumors. Since the NHEJ is an error prone mechanism, its abnormal activation can result in chromosomal instability and ultimately lead to tumorigenesis. 展开更多
关键词 Colorectal cancer Colon adenoma DNA-dependent protein kinase kut0/80 heterodimer Mismatch repair Non-homologous end joining Doublestrand break repair Chromosomal instability
下载PDF
带钢及其支承系统的参数振动分析 被引量:2
3
作者 许飞 李勇 +2 位作者 李路雷 蔡忠清 徐培民 《机械研究与应用》 2013年第3期27-30,34,共5页
考虑带钢及其支承的协同作用,建立带钢及其支承系统的振动模型,通过Galerkin方法得到带钢系统的常微分方程组,并运用多尺度法和龙格库塔法进行了研究。结果表明带钢末端张力波动时,会激起系统的主参数共振,引起带钢的大幅振动。当塔顶... 考虑带钢及其支承的协同作用,建立带钢及其支承系统的振动模型,通过Galerkin方法得到带钢系统的常微分方程组,并运用多尺度法和龙格库塔法进行了研究。结果表明带钢末端张力波动时,会激起系统的主参数共振,引起带钢的大幅振动。当塔顶辊固有频率与带钢某阶固有频率的比值约为2(即τ≈2)时,主参数共振区域特性与τ值远离于2的有本质的区别;此时,即使塔顶辊的初始扰动很小,塔顶辊的振动响应也会很大。 展开更多
关键词 热镀锌带钢 参数振动 GALERKIN方法 多尺度法 龙格库塔法
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部