Results 11 to 20 of about 1,008 (62)

ATM-PON系统的突发同步技术

Guangtongxin yanjiu, 2000
在采用 TDMA协议的无源光网络中 ,突发同步是一项关键技术 ,一般采用基于多相时钟的关键字检测法。本文提出了一种新颖的基于数据延时的突发同步技术 ,采用了高速 FP-GA和 ECL有源延时器的方式实现 1 55Mbit/s突发同步器。由于采用同一主时钟对数据抽样 ,不需要进行相位校准 ,简化了电路的设计 ;相对于传统的 ASIC设计方案 ,该方案具有开发成本低 ...
张旭, 陈雪, 孙曙和
doaj  

The Research of Super High Rate Counter/Scaler

本文介绍了一个我们最近研制约超高速计数／定标器，为一个标准的双插宽的NIM插件。计数前级选用最先进的ECL电路，其最高计数率已可达到500M（Count)／S，较之核物理实验上常用的EG&G——ORTEC生产计数／定标器872和874（25MHz）为高，可用于更加精细的信号脉冲分辨测量，采用性能价格比很高的单片机8 0 3 1作为控制与数据处理单元，软件采用MCS一5 1汇编和CBASIC混合编制。 仪器中含有两路计数电路：超高速路计数率为10——500MHz，普通路为1Hz一20MHz ...
龚威
core  

[<i>Danzhi Jiangtang</i> Capsule improves renal vascular endothelial function in rats with diabetic nephropathy by downregulating the Notch1/NICD/MAML1 signaling pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhu S, Ma J, Zheng Y, Wu C, Zhao J, Li L, Wang L, Zhou X.   +7 more
europepmc   +1 more source

[Radix codonopsis combined with Poria improves cognitive impairment in rats with unilateral common carotid artery ligation by regulating the ERα/PI3K/Akt signaling pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Yang J, He Y, Guo Y, Shang F, Hua L, Yang Y, Zhang X, Wei J.   +7 more
europepmc   +1 more source

[Application of molecularly imprinted polymers-based sensors for determination of acute coronary syndrome biomarkers]. [PDF]

Se Pu
Zhang Y, Xia J, Zhu J, Zeng M, Bai J, Xu Q, Gao H.   +6 more
europepmc   +1 more source

[NLRP3 signaling pathway promotes hepatocyte pyroptosis in mice with nonalcoholic steatohepatitis in hypoxic environment]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Luo S, Zhu Q, Yan Y, Ji Z, Zou H, Zhang R, Ba Y.   +6 more
europepmc   +1 more source

[<i>Qihuang Jianpi Zishen</i> Granules ameliorate renal damage in MRL/lpr mice by inhibiting the MyD88/NF-κB pathway]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Tang Z, Huang C, Li M, Cheng L, Chen J, Shang S, Liu S.   +6 more
europepmc   +1 more source

[Mechanism analysis of ω-3 polyunsaturated fatty acids in alleviating oxidative stress and promoting osteogenic differentiation of MC3T3-E1 cells through activating Nrf2/NQO1 pathway]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Huang J, Chen L, Xu C, Yu H, Zhou S, Guan J.   +5 more
europepmc   +1 more source

[Gastrodin inhibits ferroptosis to alleviate hypoxic-ischemic brain damage in neonatal mice by activating GPX4/SLC7A11/FTH1 signaling]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Guo T, Chen B, Shi J, Kuang X, Yu T, Wei S, Liu X, Xiao R, Li J.   +8 more
europepmc   +1 more source

[Ethanol Extract of <i>Vicatia thibetica</i> de Boiss. Improves Chronic Atrophic Gastritis in Rats via the HO-1/Nrf2 and Myd88/AKT/PI3K Signaling Pathways]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wangjieciren, Lan J, Dawazhuoma, Chen M, DU J, Ye B.   +5 more
europepmc   +1 more source