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This paper presents a low-power clock generator based on digital delay locked loop (DLL) for high-speed and high-resolution analog-to-digital converters (ADCs). A novel structure for the phase detector and delay controller is adopted to eliminate dithering and false locking of the DLL. The operation frequency range of the DLL is 30MHz∼250MHz, and the corresponding locking time is about 66.4us and...
The genotoxicity of nitrobenzene was evaluated by Vicia faba micronuclei (MN) assay, chromosomal aberration assay and mitotic index assay. Vicia faba primary root tip cell mitotic index (MI) increased following NB concentration from 5 mg/L to 50 mg/L. It implies that NB may effect on the mitosis of Vicia faba root tip cells, promote at lower concentration and inhibit at higher concentration. NB induces...
In this paper, a complex wireless sensing unit is designed for application in structural health monitoring systems. Fabricated from advanced embedded system technologies, the fundamental building block of the system is a wireless sensing unit capable of employing a spread-spectrum wireless modem for peer-to-peer communication between sensing units and a complex 32-bit computational core for local...
How does inhaled formaldehyde transfer the genotoxicity from exposure organ to site distant organs via blood? This is the key question to understand leukemia induced by formaldehyde. To answer this question, we used new born calf serum (NBS) as "blood" and Hela cells as materials to investigate its effects on cellular thiol concentration and DNA-protein crosslink (DPC) induced by formaldehyde...
The objective of this study is to explore the relation between oxidative stress and DNA-protein crosslink formation caused by formaldehyde (FA) inhalation in mice liver. 15 Kun Ming mice were divided into 3 groups: control group, 3.0 mg/m3 gaseous FA inhaled group, 3.0 mg/m3 gaseous FA and lipoic acid (LA) treated group. The content of reduced glutathione (GSH) and the content of DPC were measured...
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