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( Ran Huo ),( Hui Zhu ),( Li Lu ),( Lan Lan Ying ),( Min Xu ),( Zhi Yang Xu ),( Jian Min Li ),( Zuo Min Zhou ),( Jia Hao Sha ) 생화학분자생물학회 2005 BMB Reports Vol.38 No.1
A gene coding a novel isoform of carbamyl phosphate synthetase I (CPSI) was cloned from a human testicular library. As shown by cDNA microarray hybridization, this gene was expressed at a higher level in human adult testes than in fetal testes. The full length of its cDNA was 3831 bp, with a 3149 bp open reading frame, encoding a 1050-amino-acid protein. The cDNA sequence was deposited in the GenBank (AY317138). Sequence analysis showed that it was homologous to the human CPS1 gene. The putative protein contained functional domains composing the intact large subunit of carbamoyl phosphate synthetase, thus indicated it has the capability of arginine biosynthesis. A multiple tissue expression profile showed high expression of this gene in human testis, suggesting the novel alternative splicing form of CPS1 may be correlated with human spermatogenesis.
Zhu Junjie,Lee InHwan,Ran Yao,Zhuxi Fu 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.3
Epitaxial ZnO films were prepared on Si (111) substrates using epitaxial 3C-SiC buffer layers. In particular, we tried different epitaxial 3C-SiC buffer layers to grow high quality ZnO films on silicon substrates by metal-organic chemical vapor deposition. The relationship between the quality of ZnO epitaxial layers and that of the SiC buffer layers was investigated. The epitaxial ZnO films were obviously improved by improving the SiC buffer layers. When the quality of the SiC buffer layers was good enough, the effect became less obvious.
zhu shimao,Yong Ran Park,서승영,In Hee Kim,Soo Teik Lee,Sang Wook Kim 대한장연구학회 2019 Intestinal Research Vol.17 No.4
Background/Aims: Transforming growth factor-β1 (TGF-β1) induction of epithelial-mesenchymal transition (EMT) is one of the mechanisms by which colorectal cancer (CRC) cells acquire migratory and invasive capacities, and subsequently metastasize. Parthenolide (PT) expresses multiple anti-cancer and anti-inflammatory activities that inhibit nuclear factor κB by targeting the IκB kinase complex. In the present study, we aimed to investigate whether PT can inhibit TGF-β1-induced EMT in CRC cell lines. Methods: HT-29 and SW480 cell lines were used in the experiment. Cell viability was detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and sub-G1 analysis was measured by flow cytometry. The induction of EMT by TGF-β1 and inhibition of the process by PT was analyzed by phase contrast microscopy, wounding healing, cellular migration and invasion assays, and Western blotting. Results: TGF-β1 inhibits HT-29 cell proliferation, but has no effect on SW480 cell proliferation; different concentrations of TGF-β1 did not induce apoptosis in HT-29 and SW480 cells. PT attenuates TGF-β1-induced elongated, fibroblast-like shape changing in cells. PT inhibits TGF-β1-induced cell migration and cell invasion. In addition, other EMT markers such as β-catenin, Vimentin, Snail, and Slug were suppressed by PT, while E-cadherin was increased by PT. Conclusions: Our findings show that PT inhibits TGF-β1-induced EMT by suppressing the expression of the mesenchymal protein and increasing expression of the epithelial protein. These findings suggest a novel approach for CRC treatment by suppression of TGF-β1-induced EMT.
Review : Epidemiology of Hepatocellular Carcinoma in the Asia-Pacific Region
( Ran Xu Zhu ),( Wai Kay Seto ),( Ching Lung Lai ),( Man Fung Yuen ) 대한간학회 2016 Gut and Liver Vol.10 No.3
Hepatocellular carcinoma (HCC) is the predominant primary liver cancer in many countries and is the third most common cause of cancer-related death in the Asia-Pacific region. The incidence of HCC is higher in men and in those over 40 years old. In the Asia-Pacific region, chronic hepatitis B virus and hepatitis C virus infections are the main etiological agents; in particular, chronic hepatitis B infection (CHB) is still the major cause in all Asia-Pacific countries except for Japan. Over the past two decades, the incidence of HCC has remained stable in countries in the region except for Singapore and Hong Kong, where the incidence for both sexes is currently decreasing. Chronic hepatitis C infection (CHC) is an important cause of HCC in Japan, representing 70% of HCCs. Over the past several decades, the prevalence of CHC has been increasing in many Asia-Pacific countries, including Australia, New Zealand, and India. Despite advancements in treatment, HCC is still an important health problem because of the associated substantial mortality. An effective surveillance program could offer early diagnosis and hence better treatment options. Antiviral treatment for both CHB and CHC is effective in reducing the incidence of HCC. (Gut Liver 2016;10:332-339)
( Ran Li ),( Minghu Wu ),( Zongliang Gan ),( Ziguan Cui ),( Xiuchang Zhu ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.10
The traditional block-based motion compensation methods in frame rate up-conversion (FRUC) only use a single uniquely motion vector field. However, there will always be some mistakes in the motion vector field whether the advanced motion estimation (ME) and motion vector analysis (MA) algorithms are performed or not. Once the motion vector field has many mistakes, the quality of the interpolated frame is severely affected. In order to solve the problem, this paper proposes a novel joint overlapped block motion compensation method (8J-OBMC) which adopts motion vectors of the interpolated block and its 8-neighbor blocks to jointly interpolate the target block. Since the smoothness of motion filed makes the motion vectors of 8-neighbor blocks around the interpolated block quite close to the true motion vector of the interpolated block, the proposed compensation algorithm has the better fault-tolerant capability than traditional ones. Besides, the annoying blocking artifacts can also be effectively suppressed by using overlapped blocks. Experimental results show that the proposed method is not only robust to motion vectors estimated wrongly, but also can to reduce blocking artifacts in comparison with existing popular compensation methods.
Zhu, Jianxiong,Guo, Xiaoyu,Meng, Dehuan,Cho, Minkyu,Park, Inkyu,Huang, Run,Song, Weixing The Royal Society of Chemistry 2018 Journal of Materials Chemistry A Vol.6 No.34
<P>In this paper, we report a flexible comb electrode triboelectric-electret coupling nanogenerator using a separated friction microfiber object for self-powered position, motion direction and acceleration tracking sensing and its energy harvesting. The power was generated from the coupling of the electrostatic and triboelectric effects among a separated triboelectric object, a polytetrafluoroethylene (PTFE) film and interdigital electrodes. Under an acceleration of 1 m s<SUP>−2</SUP>, we found that the corona charged PTFE film with a sliding motion reached ∼3 times more short-circuit current (<I>I</I>sc) and ∼6 times more open-circuit voltage (<I>V</I>oc) than the PTFE film without corona charges, respectively. The device can be a good self-powered acceleration tracking sensor, where the reasons were a stability voltage out during the process of separated components frictions and a numerical relationship of <I>I</I>sc with increased accelerations. Moreover, potential applications using several different separated materials such as a bulk of carbon microfibers, a finger sliding with a nylon glove, and water microdrops were used to show the energy harvesting of various friction materials and their effective contact area. It was found that a much larger contact area “finger” sliding showed a <I>V</I>oc of ∼45 V, whereas a smaller contact area “microdrop” sliding on the prototype presented a maximum peak <I>V</I>oc of ∼1.8 V.</P>
( Ran Li ),( Zongliang Gan ),( Ziguan Cui ),( Minghu Wu ),( Xiuchang Zhu ) 한국인터넷정보학회 2013 KSII Transactions on Internet and Information Syst Vol.7 No.2
In this paper, we propose a compressed sensing (CS) based Wyner-Ziv (WZ) codec using motion-aligned auto regressive model (MAAR) based side information (SI) extrapolation to improve the compression performance of low-delay distributed video coding (DVC). In the CS based WZ codec, the WZ frame is divided into small blocks and CS measurements of each block are acquired at the encoder, and a specific CS reconstruction algorithm is proposed to correct errors in the SI using CS measurements at the decoder. In order to generate high quality SI, a MAAR model is introduced to improve the inaccurate motion field in auto regressive (AR) model, and the Tikhonov regularization on MAAR coefficients and overlapped block based interpolation are performed to reduce block effects and errors from over-fitting. Simulation experiments show that our proposed CS based WZ codec associated with MAAR based SI generation achieves better results compared to other SI extrapolation methods.
Highly efficient removal of three red dyes by adsorption onto Mg–Al-layered double hydroxide
Ran-ran Shan,Liang-guo Yan,Yan-ming Yang,Kun Yang,Shu-jun Yu,Hai-qin Yu,Bao-cun Zhu,Bin Du 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
The Mg–Al-CO3-LDH with Mg2+/Al3+ molar ratio of 2 was prepared via coprecipitation method atconstant pH of 9–10 and used to remove three red dyes by batch adsorption method. The results showedthe Mg–Al-LDH were well crystallized and can adsorb the red dyes effectively. The optimal adsorbentdosage and contact time were 1.0 g and 60 min, respectively. Adsorbed amount hardly changed whenpH < 10. The adsorption kinetics fit the pseudo-second order kinetic models well and isothermscorrespond to Langmuir model strictly. All the relevant mechanisms were studied and manifested asanion exchange and also electrostatic attraction for CR.
The Application and Improvement of Motion Capture Technology in Marvel Films
Ran Zhu,Hyung-gi Kim,Jaecheol Moon 중앙대학교 영상콘텐츠융합연구소 2019 TechArt :Journal of Arts and Imaging Science Vol.6 No.4
From Marvel’s first film, “Iron Man” in 2008, to this years “Avengers: Infinite War,” it appears that the first phase of the Marvel movie universe is almost coming to an end. When the “Iron Man” was released, the outstanding visual effects caught the attention of the majority of the fans. All these effects are built, thanks to motion capture technology. This article will explain the development and improvement of motion capture technology in Marvel Films in the past 10 years, and present the authors’ own views on motion capture.