PURPOSE DLC-1 is a tumor suppressor gene frequently silenced in human cancers. However, the pathogenicity of DLC-1 epigenetic silencing in the mucosa-adenoma-carcinoma transformation process of colorectal cancer (CRC) has not been studied. METHODS Promoter methylation status of DLC-1 was evaluated in 4 human CRC cell lines, 48 normal mucosa, 57 adenomas, and 80 CRC tissues with methylation-se...

This article reports results of endothelial cell interaction with atom beam source N-doped a-C:H (diamond-like carbon, DLC) as it compares with that of Si-doped DLC thin films. The RF plasma source exhibits up to 40% N-dissociation and N-atomic fluxes of approximately 0.85 x 10(18) atoms/s, which ensures better atomic nitrogen incorporation. Two different types of nitrogen species (with and wit...

Diamond-like carbon（DLC）film was deposited on organic substrates using highpower impulse magnetron sputtering（HiPIMS）without substrate bias voltage. The DLC film properties were evaluated Raman spectroscopy and X-ray photoelectron spectroscopy. Results show that the sp3 contents of films PTFE or PA6 greater than those POM substrate. ion energy distribution functions（IEDFs）of carbon argon measur...

Traditionally, JIS SKD11 tool steel is corresponding to the AISI D2. Since this material possesses high hardness and excellent wear resistance, it is usually used as a mold material and cutting tools.1,2) In order to improve the tool life, many studies have focused on surface treatment as a method of protecting the internal material.2) Nitriding is a thermo-chemical process with nitrogen diffus...

sensorless speed torque control of induction machines has been widely used in many industrial applications. the simple method of direct vector control can provide tacholess control as well as more complex approaches. in this method, the motor flux can be obtained by measuring voltage and current and integrating motor back electromotive force. the only required motor parameter is stator resistan...

In this work, antiwear nanoimprint templates were made by depositing and patterning diamondlike carbon DLC films on Si and quartz. A capacitively coupled plasma enhanced chemical vapor deposition PECVD system was configured to deposit 100 nm–1 m thick DLC films on Si and quartz substrates. These films were characterized with Raman spectroscopy, electron energy loss spectroscopy, atomic force mi...

In these days, mobile communicition service has characteristics of highspeed and multimedia Due to the high error rat io of wireless linkenvironments, a DLC protocol that is optimized for wire network could not be used in wireless link environments. Thus, DLC protocol that is suitable to mobile communication environments is required. To solve these problems, we propose ;n efficient WATM DLC lay...

Diamond-like carbon (DLC), a thin amorphous carbon film, has many uses in tribological systems. Exploiting alternative substrates and interlayers can enable control of the hardness and modulus of the multi-layer system and improve wear or friction properties. We utilise XPS and AFM to examine DLC concurrently coated on an epoxy interlayer and a steel substrate by plasma enhanced chemical vapour...