http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Integration of a Passive-Type UHF RFID Tag Using Ferroelectric Memory Technology
Hae-Chan Park,Suk-Kyoung Hong,Ae-Kyoung Lee,Baek-Hee Lee,Hee-Bok Kang,Heon-Yong Chang,Ji-Hye Choi,Nam-Kyun Park,Sanghyun Park,Sung Joo Hong,Sung-Sil Cho,Sung-Yeon Hwang,Yoon-Jung Kim,Young-Jin Son 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.2I
We investigated a passive-type rewritable radio-frequency identification (RFID) tag operating at the UHF (860 . 960 MHz) band and using ferroelectric memory (FeRAM) technology. The transponder integrated circuit(IC) for the UHF RFID tag was implemented with 0.25-μm one-poly four-metal standard logic CMOS technology with the addition of a FeRAM and Schottky diodes. The Pb(Zr,Ti)O3(PZT) capacitor array with a unit area of 1.4 × 1.4 μm2 for the FeRAM-embedded RFID tag showed a remnant polarization of 30 μC/cm2 and a leakage current of 1 × 10.5 A/cm2 at 3 V after full process integration. The novel ferroelectric technology utilizing a stacked capacitor structure and a high capacitance PZT capacitor allowed a highly competitive transponder chip size (550 × 550 μm2) by reducing the area of the analogue circuit without adding any complexity to the process integration. The PZT capacitor-based analogue circuitry showed almost the same performance as that of conventional capacitor type circuitry. Thus, the ferroelectric memory technology is very promising for the realization of a cost-effective, passive-type, rewritable UHF RFID tag.
Lee, Sang Jin,Park, Won,Park, Sung Hwan,Shim, Seung-Cheol,Baek, Han Joo,Yoo, Dae-Hyun,Kim, Hyun Ah,Lee, Soo Kon,Leee, Yun Jong,Park, Young Eun,Cha, Hoon-Suk,Park, Jin Kyun,Lee, Eun Young,Lee, Eun Bong Hindawi Publishing Corporation 2015 Journal of immunology research Vol.2015 No.-
<P>T helper 17-related cytokines have been implicated in rheumatoid arthritis (RA) pathogenesis. The study aimed to identify cytokines associated with the treatment response of RA patients to tocilizumab (TCZ), a humanized monoclonal antibody against the interleukin- (IL-) 6 receptor. As an independent substudy of the 24-week, randomized, double-blinded CWP-TCZ301 trial of TCZ in RA patients with an inadequate response to disease-modifying antirheumatic drugs, serum levels of cytokines including tumor necrosis factor-alpha, IL-17A, IL-21, IL-23, IL-6, and soluble IL-6 receptor were measured. Baseline IL-17A levels were significantly lower in RA patients who achieved disease activity score 28 (DAS28) remission at 12 weeks of TCZ treatment, compared to patients not in remission. Patients were stratified into IL-17A low group and IL-17A high group. Significantly more patients in the IL-17A low group achieved remission as compared to the IL-17A high group (47.6 versus 17.4%, <I>P</I> = 0.032). DAS28 improvement was significantly better in the IL-17A low group than in the IL-17A high group at 12 weeks (<I>P</I> = 0.045) and 24 weeks (<I>P</I> = 0.046) after adjustment. Other baseline cytokines were not associated with treatment response to TCZ. The data demonstrate that low baseline IL-17A levels are associated with better clinical response to TCZ treatment in RA patients.</P>
김준현,김종빈,박종안,박창균,박종백,박광채,김정화,양원일,정남채,문용선,최영일 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
This paper describes a system controller connected via a shared bus to distributed subsystems for multi-tasking, which contributes to a high performance operating system at the lowest system cost. The system controller consists of a single board microcomputer. The subcontroller consists of incremental motion control system for both velocity and position control, employs low cost digital logic gates to achieve the system design flexibility possible with the microprocessor, utilizes a incremental encoder to provide both position and velocity signals, and derives the velocity profile and the rotation direction from the digital difference between the required position data and the feedback data. It is found to be effective in a point-to-point position control system for Industrial processing automatization.
TMSOTf-Promoted Addition of Alkynes to Aldehydes: A Novel Synthesis of Chroman-4-ones
Park, Ji Yeon,Ullapu, Punna Reddy,Choo, Hyunah,Lee, Jae Kyun,Min, Sun-Joon,Pae, Ae Nim,Kim, Youseung,Baek, Du-Jong,Cho, Yong Seo WILEY-VCH Verlag 2008 EUROPEAN JOURNAL OF ORGANIC CHEMISTRY Vol.2008 No.32
<P>A novel synthetic method to prepare chalcones 2 and chroman-4-ones 3 by TMSOTf-promoted addition of alkynes 1 to various aldehydes has been developed. The ratios of chalcones 2, chroman-4-ones 3 and hydrated products 4 varied depending upon the substituents R (nBu, phenyl, H and TMS) on the alkynes 1. We also describe the transformation of the chalcones 2 to the corresponding chroman-4-ones 3 under basic conditions. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)</P> <B>Graphic Abstract</B> <P>A novel synthetic method to prepare chalcones and chroman-4-ones by TMSOTf-promoted addition of alkynes to various aldehydes has been developed. The ratios of chalcones, chroman-4-ones and hydratedproducts vary depending upon the substituents on the alkynes. We also describe the transformation of the chalcones to the corresponding chroman-4-ones under basic conditions. <img src='wiley_img/1434193X-2008-2008-32-EJOC200800782-fig000.gif' alt='wiley_img/1434193X-2008-2008-32-EJOC200800782-fig000'> </P>
초음파법을 이용한 콘크리트 시공이음부 공극 및 내부공동의 화상검출 해석에 관한 연구
박석균,백운찬,이한범 대전대학교 산업기술연구소 2000 산업기술연구소 論文集 Vol.11 No.2
The joint and void treatment of concrete is one of the technical problems in construction. Joints and voids created with the construction result in serious weakness from the aspects of both structural and water-barrier function. Ultrasonic image processing technique was used for the inspection of construction joints of SRC(Steel-frame Reinforced Concrete) column and voids of concrete block in this study. The advantages and limitations of this technique for non-destructive inspection in construction joints and voids are investigated. As a result, it has been verified that the semi-direct measurement type is more effective than the other types for detecting the construction joints and voids using ultrasonic method.
Baek, Youngbin,Seo, Dong Kyun,Choi, Jong Ho,Lee, Byeongho,Kim, Yong Hyup,Park, Seung Min,Jung, Jungwoo,Lee, Sangho,Yoon, Jeyong Taylor Francis 2016 Desalination and Water Treatment Vol.57 No.58
<P>Carbon nanotube (CNT) membranes are considered as next-generation membranes for desalination. Among the various types of CNT membranes, vertically aligned (VA) CNT membranes provide rapid water transport. However, when the water permeability of VA CNT membranes are compared with those of the commercial membrane, the VA CNT membranes only showed slightly higher water permeability due to their low pore densities. Additionally, the applicability of VA CNT membranes for desalination has been limited due to their larger pore sizes. Herein, we improved VA CNT membranes in terms of the desalination potential, flux enhancement, and scale-up. For the desalination potential, graphene oxide (GO) or polyamide (PA) were coated on a VA CNT membrane as a selective layer, which showed approximately 40-65% NaCl rejection, respectively. A pretreatment polyelectrolyte coating for a GO-coated VA CNT membrane increased the water permeability by approximately 50%. For the flux enhancement, the water permeability of a VA CNT membrane was nearly doubled when the VA CNT forest was mechanically densified by half. Finally, an enlarged VA CNT forest (2 x 2 cm(2)), sequential VA CNT forests (1 x 1 cm(2)) in a large cast, and an assembly of the VA CNT membrane were suggested as scale-up approaches.</P>
Effect of Rhizoma gastrodiae on oxidative stress in cultured mouse spinal motor neurons
Park, Seung-Taeck,Kim, Jeong-Joong,Jeong, Se-Jin,Cho, Chung-Gu,Lee, Kang-Chang,Jang, Chul-Ho,Park, Jae-Hwang,Hong, Gi-Youn,Yoon, Hyang-Suk,Oh, Yeon-Kyun,Oh, Kwang-Su,Min, Bu-Kie,Han, Du-Seok,Baek, Seu Kyung Hee Oriental Medicine Research Center 2000 International journal of oriental medicine Vol.1 No.2
To clarify the toxic effect of oxidative stress, hydrogen peroxide $(H_{2}O_{2})-induced$ neurotoxicity was examined in cultured newborn mouse spinal motor neurons after spinal motor neurons were grown in the media containing various concentrations of glucose oxidase (GO). And also, the protective effect of Rhizoma gastrodiae extract against GO-induced neurotoxicity was evaluated. Cytotoxicity was expressed as a cell viability by 3-(4,5-dimethylthiazol-2-yl) -2,5-diphenyltetrazolium bromide (MTT) assay. In this study, exposure of motor neurons to GO-induced cell death significantly, in a dose- and time-dependent manners in spinal motor neuron cultures. The decrease in cell viability of motor neurons damaged by GO was proventioned by Rhizoma gastrodiae extract. These results suggest that the neuroprotective effect of Rhizoma gastrodiae extract on GO-induced neurotoxicity may result from a attenuation of $H_{2}O_{2}-induced$ oxidative stress.