为探讨玉米赤霉烯酮(ZEA)雄性生殖毒性及其机制,以TM3细胞为材料,分别设0,5,10,20μg/L ZEA染毒组,培养72h后MTT检测细胞活力,免疫印迹法检测原癌基因c-myc、c-fos、c-jun及连接蛋白Cx43、P-Cx43蛋白表达,SLDT技术观察GJIC功能的变化,免疫荧光观察Cx43在细胞内分布.结果显示,与对照组相比,10,20μg/L组c-fos的表达量明显升高,5,10,
针对雾霾天气下现有城市交通系统存在的诸多问题,设计城市洒水车路线安排模型和城市交通系统实时优化策略,力求以最小成本最大程度发挥交通系统的潜力,并达到洒水除霾的环保需求.首先,对城市各个站点每天的具体位置信息进行统计,建立城市交通的网络分布图,应用几何中心算法与聚类方法,对城市交通数据进行分类整理,采用随机型邻域搜索算法(SNS)寻求最佳的洒水车路线安排;其次,采集城市交通数据,深入挖掘居民出行的规
本文设计了基于57BL52-230型三相无刷直流电动机的驱动电路.控制电路由ATMEL公司生产的AT89S51单片机组成,驱动电路主要有Vishay Siliconix公司的Si9979Cs无刷直流电动机控制芯片和由6个MOSFET功率管构成的三相桥式电路构成.实验结果表明,设计的驱动板能产生PWM波驱动57BL52-230型三相无刷电动机正常运行;通过对电机进行空载实验,分析测得三相电机的霍尔传
A new kind of confidence intervals for the common mean of several log-normal distributions are proposed by using the combined confidence distribution.
In this paper,we put forward a spectral GMM estimation method for general multidimensional diffusion processes.
In this paper,we consider the Stein-Type approach to the estimation of the regression parameter in a multiple regression model under a multicollinearity situation.
We present a new framework on structural similarities and differences between multiple high-dimensional Gaussian graphical models(GGMs)over a set of nodes under distinct experimental conditions.
Feature screening is an important technique in preliminary regression analysis with ultrahigh dimensional predictors.
We investigate the problem of estimating the Cholesky decomposition in a conditional independent normal model with missing data.