Study on Wusan Granule Anti-tumor Related Target Gene Screened by cDNA Microarray

Wusan Granule, the Ⅲ new drug, is composed of such traditional Chinese medicines as Radix Polygorri Multiflori Praeparata, Radix Noginseng and the like. In 2001, State Drug Administration of China approved clinical trial for Wusan Granule. Wusan Granule possesses the superiority of safety and effectiveness. Its main functions are to supplement Qi and nourish Yin, and to dissipate mass. The animal experiment showing the recipe for Wusan Granule can not only suppress Lewis lung carcinom…     

基于FPGA的宽带数字信道化接收机的设计

提出一种基于多相滤波器组的宽带数字信道化接收机的实现结构和设计方法,该方法可以满足侦察接收机宽频段覆盖、高灵敏度、高截获概率和实时处理能力,较好地解决高速A/D芯片与低速信号处理器之间的矛盾.用基于CORDIC算法和一阶相位差分算法进行瞬时测频.对系统中的每个功能模块进行了基于FPGA的设计与实现,从signaltab中验证了该方法的正确性.     

球磨对纳米ZrO2水相悬浮体系性质的影响

实验研究了球磨时间对纳米ZrO₂水悬浮液性质的影响。结果表明,粒径小于15nm ZrO₂在SND6800球磨剂的水相中球磨2h制备的悬浮液,可稳定存在14天。在SND6800球磨剂与ZrO₂的质量比为5:95时,球磨时间对粒子粒度、悬浮液的密度和pH值以及沉降率影响不大;但对悬浮液的吸光度、表面张力和黏度有明显的影响。球磨时间50h是悬浮液的吸光度及表面张力最大,而黏度是球磨40h时最大。     

纳米氧化锆水悬浮液的稳定性

通过黏度、表面张力、密度及粒度测试等手段研究了球磨剂、球磨时间、pH值、添加剂等因素对纳米氧化锆水悬浮液稳定性的影响。结果表明:球磨时间2h,球磨剂与氧化锆质量比为3.5%,添加剂可用乙二醇,悬浮液pH值为10.0,氧化锆粒径小于15nm时,纳米氧化锆水悬浮液可稳定30天。     

平板电视能效标准对节能新技术应用的考虑

主要讨论了液晶电视各个部分的能耗,液晶电视能效提高的各种技术实现途径,包括对光源、电源、背光膜片和面板等部件的技术改进以及潜力.     

中国彩色电视机节能效果技术和经济性分析(上)

对国产彩电节能效果技术和经济性进行了较为深入的分析。     

中国彩色电视机节能效果技术和经济性分析(下)

对国产彩电节能效果技术和经济性进行了较为深入的分析     

Study on Wusan Granule Anti-tumor Related Target Gene Screened by eDNA Microarray

To screen Wusan Granule anti-tumor related target gene using cDNA microarray technique, both mRNA from Lewis lung carcinoma tissues treated by Wusan Granule and untreated control are reversibly transcribed to prepare cDNA probes which are labeled by Cy5 and Cy3. Then, the probes are hybridized to the mice cDNA microarray type MGEC-20S. After hybridization, the cDNA microarray is scanned by ScanArray 3 000 scanner and the data is analyzed by ImaGene 3 software to screen the differentially expressed genes. There are 45 differentially expressed genes including 18 known genes and 27 unknown genes between the two groups, and among them, 20 elevated genes and 25 reduced genes are identified. Additionally, the genes related to invasion and metastasis of malignant carcinomas are down-regulated and the genes related to apoptosis are up-regulated. The cDNA microarray technique is a high-throughput approach to screen the Wusan Granule anti-tumor related target genes, which allow us to explore the molecular biological mechanism on a genomic scale.     

平板电视能效标准中的亮度测试研究

介绍了用于平板电视能效评价的亮度测试信号.通过理论分析,证明该信号与能效标准中的功耗测试有很好的对应关系.使评价结果更有实际意义,同时也能保证使用统一的测试信号公平对待液晶电视和等离子电视这两种完全不同的显示方式.     

宽带信号全数字去斜与脉压方法研究

针对上一代逆合成孔径雷达中1 GHz带宽成像通道的不足,如成像距离短、相位非线性误差提取困难、目标相位信息丢失等.文中采用新一代宽带数字接收机模块,采用全数字方案,上行通道在1.8 GHz的中频上直接产生1 GHz带宽信号,下行通道在1.8 GHz的中频上直接对1 GHz带宽信号进行ADC采样,并实时完成随后的信号处理直至得到一维像.实验表明:在1.8 GHz的中频上,对带宽1 GHz、脉冲宽度400 μs信号,该方法可以实时完成±5km的一维像处理,而其硬件规模只是一个6U标准的CPCI模块.