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ZnO single nanowire photodetectors have been measured in different ambient conditions in order to understand and control adsorption processes on the surface. A decrease in the conductivity has been observed as a function of time when the nanowires are exposed to air, due to adsorbed O2/H2O species at the nanowire surface. In order to have a device with stable characteristics in time, thermal desorption...
The pattern of genome transcription in prokaryotes is determined by selective distribution of RNA polymerase within the genome. The gene selectivity of RNA polymerase is modulated after interaction with DNA-binding transcription factors (TFs). Escherichia coli contains a total of about 300 TFs, but the regulatory function has not yet been identified for about one third. For quick and systematic search...
Under stressful conditions in nature, Escherichia coli forms biofilms for long-term survival. Curli fimbriae are an essential architecture for cell-cell contacts within biofilms. Structural components and assembly factors of curli are encoded by two divergently arranged operons, csgBA and csgDEFG, which are regulated by the csgD gene product. Thus, CsgD is a master regulator of bacterial biofilm formation...
This paper presents a novel means of introducing conductive pyrolyzed polymer structures into a muTAS platform. Insulation structures of polymer materials can be transformed into conductive structures through pyrolysis, and MEMS structures consisting of pyrolyzed polymer can be formed by a dual process of micromachining and pyrolysis. This work focuses on gate type sensing by a three-dimensional pyrolyzed...
The pattern of genome transcription in Escherichia coli determined by controlling the distribution of a total of about 2,000 molecules of RNA polymerase, the transcriptase, among 4,000 genes on its genome. In response to environmental changes, the gene selectivity of the RNA polymerase is modulated after interaction with one sigma subunit, the promoter recognition subunit, in the first step and one...
We present that degradation of ultra-high-molecular-weight-polyethylene induces drastic absorption-increase ranging continuously over the THz region. This demonstrates the possibility that THz-TDS is applied to quality-control of ultra-high-molecular-weight polyethylene, which is widely utilized in medical implants.
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