hfl

But the voltage mode HFL inverters often have performance and application in high power application .

但是在大功率场合，一般采用的还是电压源高频交流环节。

The phase-shifted controlled voltage mode converters with HFL are deeply investigated .

本文深入研究了全桥移相控制电压源高频交流环节变换器。

The cell proliferation effects of hFL and hGM-CSF were evaluated by MTT assay .

MTT法测定hFL和hGM-CSF刺激细胞增殖的生物学活性。

An original series-resonant current-mode high frequency link ( HFL ) sine-wave inverter is presented in the paper .

提出一种新型的串联谐振电流源模式隔离的高频链正弦波逆变器拓扑结构，详细介绍了其工作原理。

Objective : To clone hFL gene , detect its transcription in Hela cells and the biological activity of hFL protein .

目的：克隆人Flt3配体（FL）基因，检测其在Hela细胞中转录及表达蛋白的活性。

Introduced topology and principle of the half-bridge bi-directional current mode high-frequency link ( HFL ) inverter , designed its control system based on DSP in detail .

分析了一种半桥双向电流源高频链逆变主电路的拓扑结构和工作原理，详细介绍了基于DSP的控制系统设计。

The voltage-current double-closed-loop control is employed to regulate the QSS full-bridge HFL inverter .

针对全桥式准单级高频链逆变电路完成了电压电流双闭环控制。

Effects of hFL and / or hGM-CSF gene transfected human bone marrow stromal cell lines on expansion of CD34 ~ + cells from cord blood

转FL、GM-CSF基因的人骨髓基质细胞促进脐血CD34~+细胞体外扩增

The current mode HFL inverters solve the inherent voltage surge problem in voltage mode HFL inverters , so they have better performance and application prospect in low power application .

电流源高频交流环节逆变技术克服了电压源高频交流环节逆变技术固有的电压过冲问题，在小功率场合性能优越具有良好的应用前景；

Due to the successful cultivation of the house fly ( Musca domestica ) larvae-HFL , a large quantity of the clean HFL sample can be obtained to study the insect protein .

由于家蝇（Muscadomestica）幼虫的人工养殖获得成功，可大量得到干净的蝇幼虫样品以供做为昆虫蛋白的研究。

The transcription and expression of hFL in the transfected COS 7 cells were assayed by RT PCR , ELISA and the experiment of the human umbilical blood CD34 + cell multiplication , respectively , at 72 hours after transfection .

脂质体介导法将其转染COS7细胞，72h以RTPCR检测转染细胞中外源hFL基因的转录、ELISA法及脐血CD34+细胞增殖实验测定转染细胞上清中hFL的含量和活性。

The human fetal liver ( HFL ) during 16-24 weeks of gestation is a major site of fetal hematopoiesis and of liver differentiation and development . Therefore , proteomic analysis of HFL PM will be helpful to understand these physiological activities .

16-24周孕龄人胎肝处于关键的造血调控和发育分化时期，分析人胎肝细胞质膜蛋白质组有助于对人胎肝的这些生理活动的认识。

A coculture system was established for hFL and / or hGM-CSF gene modified human bone marrow stromal cell lines and CD34 + cells were collected from cord blood . Then total number of cells , CD34 + cells and the number of CFU-GM were determined .

将转FL、GMCSF基因的人骨髓基质细胞系与脐血CD34+细胞共培养，观察细胞总数、CD34+细胞数、cFUGM的变化情况。