基于DSP的单相电能质量综合补偿器设计

通过对谐波抑制和无功功率补偿理论分析,提出了由一个串联型APF和一并联型APF构成电能质量综合补偿器的设计方案,阐述了基于DSP的数字化控制方法,该设计方案能充分发挥串联型APF能滤去市电中谐波电压、补偿基波电压的作用和并联型APF起消除非线性负载产生的电流的无功分量和高次谐波,使功率因数接近1的作用.

以8位单片机实现信息家电连接Internet的解决方案

在分析了传统的信息家电接入Internet方式的基础上,提出了一种利用8位单片机作为主控芯片的嵌入式设备设计方案,实现信息家电以新的方式接入Internet,论述了其设计原理、软硬件设计,并从经济角度和实用性等方面分析了该方案的优点。

嵌入式Internet以太网接口设计及实现

提出了嵌入式Internet的以太网接口设计方法 ,即用单片机和以太控制器实现嵌入式系统的网络接入 ,介绍了硬件接口设计和具体程序实现方法。

RELATIONSHIP BETWEEN G-CSF AND HYPERLEUKOCYTOSIS INPATIENTS WITH APL AFTER TREATMENT WITH ALL-TRANSRETINOIC ACID

Objective: To detect the G-CSF effect and its mechanism in hyperleucocytosis of patients with APL after treatment with all-trans retinoic acid (ATRA). Methods: MTT method was used to measure the proliferation of HL-60 cells or primary APL cells. cDNA-mRNA dot blot hybridization was used to detect the c-myc gene expression level of HL-60 cells after ATRA treatment. Cycle shift of HL-60 cells was measured by flow cytometric Analysis. Results: ATRA could inhibit obviously in vitro the proliferation of HL-60 cells of primary APL cells. The G0/G1 ratio of HL-60 at 24 hours or 96 hours post-treatment with ATRA was increased, proliferation of HL-60 cells at the same time was promoted obviously under the condition of rhG-CSF. C-myc gene expression was analyzed by dot blot hybridization; its expression levels of 8, 24 or 96 hours in culture with ATRA separately were higher, low, high or lower as compared with each other. Conclusion: G-CSF plays an important role in hyperleucocytosis of patients with APL after treatment with ATRA.