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Cordycepin, a nucleoside-derivative-isolated form Cordyceps militaris, has been reported to suppress tumor cell proliferation and cause apoptosis. This study investigates the effect of cordycepin on the migration of human glioblastoma cells. Cordycepin suppressed the migration of the human glioblastoma cell lines U87MG and LN229 in transwell and wound healing assays. Cordycepin decreased protein expression...
Preparation and characterization of bimetallic Ni–Co nanoparticle catalysts loaded on the reduced graphene oxide, denoted as Ni–Co/r-GO, for hydrogen generation from catalytic hydrolysis of sodium borohydride were studied. The reduced graphene oxide nanosheets were prepared from natural graphite. The Ni and Co metals were electrolessly deposited on the light-weighted reduced graphene oxide (r-GO)...
A pipelined analog-to-digital converter (ADC) using an incomplete-settling-without-slewing technique is proposed and verified by SPICE simulations. Our analysis shows that operational amplifiers (opamps) in multi-bits stages can avoid slewing and linearly settle for whole period of amplification. If opamp does not experience slewing, the error caused by incomplete settling can be regarded as a constant...
This paper discusses the design of a 90 nm CMOS IV 10-bit lGS/s current-steering D/A converter. The proposed design operates under low supply voltage of IV and gives a large differential full- scale output of 0.5 Vppd. A wide full-scale current range of 2-10 mA is designed and the output impedance of the DAC is optimized for different full-scale currents by a bias circuit related to them. The post-layout...
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