in this paper, a new high dynamic range digitally-controlled oscillator (dco) for all-dpll systems is proposed. the proposed dco is based on using a δς modulator as a digital-to-analog converter. using δς dac can provide a very high resolution (18-bit) control on the dco. the δς dac output is a 2-level pulse signal that needs to be filtered for cancelling the out of band shaped noise. the used ...

Topological defects (TDs) appear almost unavoidably in continuous symmetry breaking phase transitions. The topological origin makes their key features independent of systems' microscopic details; therefore TDs display many universalities. Because of their strong impact on numerous material properties and their significant role in several technological applications it is of strong interest to fi...

Aid given by non-DAC donors (“new donors”) gains increasing attention. The recent literature moved beyond the presentation of qualitative evidence to more rigorous analyses based on improved data collection. In this paper we investigate the lessons of this emerging literature. We discuss whether the allocation of aid from non-DAC donors is different from that of DAC donors and how non-DAC donor...

Abstract: This paper focuses on analysis and experimental results of 6-bit charge-redistribution DAC and 6-bit charge-redistribution DAC using split array configuration. These DAC configurations are designed and simulated using GPDK 180nm CMOS technology. DAC is an important component within the SAR ADC. The charge redistribution DAC in a Split capacitor configuration has a total capacitance wh...

.................................................................................................................... v Introduction ....................................................................................................... 1 1.1 STARS ............................................................................................................ 2 Analog and Digital Performance ..........

The aim of the present study was to determine the effects of long-term exposure of decitabine (DAC) to HCT116 colorectal cancer (CRC) cells on the acquisition of resistance to DAC as well as cross-resistance to anticancer drugs used for CRC or other epigenetic modifiers. In the present study, DAC-resistant HCT116 CRC cells were established through long-term treatment with increasing concentrati...

Several nitrogen-containing dietary supplements were fed to chicks to study their effects on growth and tissue nitrogen products. An antibiotic mixture was added to the diet to determine its effect on the metabolism of nitrogenous compounds. In the first experiment, 2.0% protein equivalent was added as diammonium citrate (DAC) or isolated soy protein (ISP) to a balanced practical diet. DAC lowe...

Hypermethylation of the transcription factor AP-2 epsilon (TFAP2E) gene affects 5-fluorouridine (5-FU) resistance in gastric cancer (GC) patients. The epigenetic inhibitor 5-Aza-2'-deoxycytidine (DAC), which reverses DNA methylation by targeting DNA methyltransferases (DNMTs), has potential to sensitize GC to 5-FU. Nevertheless, DNA demethylation only DAC transiently occurs since DAC is unstabl...