China-Korea Trade and Investment Development and Free Trade Area(FTA) Prospects

Kang Xie 한국무역학회 2003 한국무역학회 국제학술대회 Vol.2003 No.10

Since Aug.24, 1992 when the diplomatic relations between China and Korea was established, China and Korea trade and investment has been developed rapidly. Complementarity, co-existence and competitiveness all exist, however, Complementarity is more important than competitiveness. So if China and Korea co-operated well, two countries would have good future. China and Korea trade and investment is closely connected with the regional integration. Recently, the whole world has entered the new stage (new generation) of bilateral and multilateral FTA. In Asia, ASEAN and the North Asia area have been the two important economic regions. China-Japan-Korea FTA has its inevitable trend. However, it takes much time. In the realistic world it is necessary to lay stress on China-Korea FTA, China-Japan FTA and Korea-Japan FTA. Among them we should discuss the China-Korea FTA first. The establishment of the China-Korea FTA has its advantages and disadvantages, however the advantages will exceed the disadvantages. The deepening development of the China-Korea FTA depends on the development of the Northeast China Area, practice experiences of 10 + 1 and CEPA, and supports of the governments. The China-Korea FTA starts from industrial co-operations, enlarging new investment areas, developing the Northeast China Area and the political role of governments. The China-Korea FTA can be predicable and will establish the firm foundation for China-Japan-Korea FTA.

China-Korea Trade and Investment Development and Free Trade Area(FTA) Prospects

Kang Xie 한국무역학회 2003 國際學術大會 論文集 Vol.2003 No.10

Since Aug.24, 1992 when the diplomatic relations between China and Korea was established, China and Korea trade and investment has been developed rapidly. Complementarity, co-existence and competitiveness all exist, however, Complementarity is more important than competitiveness. So if China and Korea co-operated well, two countries would have good future. China and Korea trade and investment is closely connected with the regional integration. Recently, the whole world has entered the new stage (new generation) of bilateral and multilateral FTA. In Asia, ASEAN and the North Asia area have been the two important economic regions. China-Japan-Korea FTA has its inevitable trend. However, it takes much time. In the realistic world it is necessary to lay stress on China-Korea FTA, China-Japan FTA and Korea-Japan FTA. Among them we should discuss the China-Korea FTA first. The establishment of the China-Korea FTA has its advantages and disadvantages, however the advantages will exceed the disadvantages. The deepening development of the China-Korea FTA depends on the development of the Northeast China Area, practice experiences of 10 + 1 and CEPA, and supports of the governments. The China-Korea FTA starts from industrial co-operations, enlarging new investment areas, developing the Northeast China Area and the political role of governments. The China-Korea FTA can be predicable and will establish the firm foundation for China-Japan-Korea FTA.

Optimum Design of Transverse Flux Machine for High Contribution of Permanent Magnet to Torque Using Response Surface Methodology

Xie, Jia,Kang, Do-Hyun,Woo, Byung-Chul,Lee, Ji-Young,Sha, Zheng-Hui,Zhao, Sheng-Dun The Korean Institute of Electrical Engineers 2012 Journal of Electrical Engineering & Technology Vol.7 No.5

Transverse flux machine (TFM) has been proved to be very suitable for high-torque, low-speed, and direct-drive situation in industry. But the complex structures and costly permanent magnets (PMs) are two key limitations of its wide range of applications. This paper proposes a new claw pole TFM (ACPTFM) which features an assembled claw pole stator and using the lamination steels material to overcome the complex structures. By combining response surface methodology (RSM) with design of experiment, an optimum design method is put forward to improve the PM's contribution to the torque in order to save the PM's amount. The optimum design results demonstrate the validity of the proposed optimum design method and the optimized model. Eventually, the finite-element analysis (FEA) calculation method, which is used in the optimization process, is verified by the experiments in a prototype.

Layer-by-layer assembly of two-dimensional materials into wafer-scale heterostructures

Kang, Kibum,Lee, Kan-Heng,Han, Yimo,Gao, Hui,Xie, Saien,Muller, David A.,Park, Jiwoong Macmillan Publishers Limited, part of Springer Nat 2017 Nature Vol.550 No.7675

High-performance semiconductor films with vertical compositions that are designed to atomic-scale precision provide the foundation for modern integrated circuitry and novel materials discovery. One approach to realizing such films is sequential layer-by-layer assembly, whereby atomically thin two-dimensional building blocks are vertically stacked, and held together by van der Waals interactions. With this approach, graphene and transition-metal dichalcogenides—which represent one- and three-atom-thick two-dimensional building blocks, respectively—have been used to realize previously inaccessible heterostructures with interesting physical properties. However, no large-scale assembly method exists at present that maintains the intrinsic properties of these two-dimensional building blocks while producing pristine interlayer interfaces, thus limiting the layer-by-layer assembly method to small-scale proof-of-concept demonstrations. Here we report the generation of wafer-scale semiconductor films with a very high level of spatial uniformity and pristine interfaces. The vertical composition and properties of these films are designed at the atomic scale using layer-by-layer assembly of two-dimensional building blocks under vacuum. We fabricate several large-scale, high-quality heterostructure films and devices, including superlattice films with vertical compositions designed layer-by-layer, batch-fabricated tunnel device arrays with resistances that can be tuned over four orders of magnitude, band-engineered heterostructure tunnel diodes, and millimetre-scale ultrathin membranes and windows. The stacked films are detachable, suspendable and compatible with water or plastic surfaces, which will enable their integration with advanced optical and mechanical systems.

Isoflavone-enriched soybean (<i>Glycine</i> max) leaves prevents ovariectomy-induced obesity by enhancing fatty acid oxidation

Xie, Cheng-liang,Kang, Sang Soo,Cho, Kye Man,Park, Ki Hun,Lee, Dong Hoon Elsevier 2018 Journal of Functional Foods Vol.43 No.-

<P><B>Abstract</B></P> <P>Dietary isoflavones have been gaining increased interest in the field of functional foods due to their ability to ameliorate several postmenopausal symptoms. Using ovariectomized (OVX) rats supplemented with isoflavone-enriched soybean leaves (IESLs), we investigated the effect of dietary isoflavones on menopausal-associated obesity. Oral administration of IESLs significantly reduced OVX-induced weight gain and visceral fat mass. Additionally, IESLs significantly ameliorated OVX-induced hepatic steatosis as reflected by decreased triacylglycerol accumulation in the liver and decreased serum alanine transaminase and aspartate aminotransferase levels. These anti-obesity effects of IESLs were confirmed to be due to enhanced fatty acid oxidation via up-regulation of peroxisome proliferator activated receptor alpha, peroxisomal acyl-coenzyme A oxidase 1, and carnitine palmitoyltransferase 1a mRNA expression. These results demonstrate that IESLs may be an effective functional food-based approach to protect against menopause-associated obesity.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ethylene-treated soybean (<I>Glycine</I> max) leaves were rich of isoflavones. </LI> <LI> Isoflavone-enriched soybean leaves (IESLs) reduced ovariectomy-induced weight gain and visceral fat mass. </LI> <LI> IESLs ameliorated ovariectomy-induced hepatic steatosis. </LI> <LI> IESLs enhanced fatty acid oxidation by up-regulating mRNA expression of PPARα, ACOX1 and CPT1a. </LI> </UL> </P>

Quantification of Multifunctional Dipeptide YA from Oyster Hydrolysate for Quality Control and Efficacy Evaluation

Xie, Cheng-Liang,Kang, Sang Soo,Lu, Ciyong,Choi, Yeung Joon Hindawi 2018 BioMed research international Vol.2018 No.-

<P>YA is an angiotensin-I-converting enzyme- (ACE-) inhibitory peptide from oyster hydrolysate with antihypertensive activity. Its antioxidant and anti-inflammatory activity were investigated in this study. YA can dose-dependently quench DPPH and ABTS radical and inhibit lipopolysaccharide-induced nitric oxide in RAW 264.7 cells. YA is a multifunctional peptide and was selected as an indicator for quality control and efficacy evaluation of oyster hydrolysate. A practical HPLC/UV assay for YA quantification was developed and validated. It was proved to be accurate and reliable, according to parameters such as specificity, linearity, precision, and accuracy. The quantity results of YA showed that the stage of enzymatic hydrolysis was a critical control point for quality control; the efficacy of oyster hydrolysate can be enhanced after digested in the gastrointestinal tract due to the release of YA by brush border peptidases. Therefore, YA from oyster hydrolysate is a potential bioactive ingredient for functional foods to combat hypertension.</P>

Contrasting the tropical responses to zonally asymmetric extratropical and tropical thermal forcing

Kang, Sarah M.,Held, Isaac M.,Xie, Shang-Ping Springer-Verlag 2014 Climate dynamics Vol.42 No.7

Dependence of Climate Response on Meridional Structure of External Thermal Forcing

Kang, S.M.,Xie, S.-P. AMERICAN METEOROLOGICAL SOCIETY 2014 Journal of climate Vol.27 No.14

High-mobility three-atom-thick semiconducting films with wafer-scale homogeneity

Kang, Kibum,Xie, Saien,Huang, Lujie,Han, Yimo,Huang, Pinshane Y.,Mak, Kin Fai,Kim, Cheol-Joo,Muller, David,Park, Jiwoong Nature Publishing Group, a division of Macmillan P 2015 Nature Vol.520 No.7549

The large-scale growth of semiconducting thin films forms the basis of modern electronics and optoelectronics. A decrease in film thickness to the ultimate limit of the atomic, sub-nanometre length scale, a difficult limit for traditional semiconductors (such as Si and GaAs), would bring wide benefits for applications in ultrathin and flexible electronics, photovoltaics and display technology. For this, transition-metal dichalcogenides (TMDs), which can form stable three-atom-thick monolayers, provide ideal semiconducting materials with high electrical carrier mobility, and their large-scale growth on insulating substrates would enable the batch fabrication of atomically thin high-performance transistors and photodetectors on a technologically relevant scale without film transfer. In addition, their unique electronic band structures provide novel ways of enhancing the functionalities of such devices, including the large excitonic effect, bandgap modulation, indirect-to-direct bandgap transition, piezoelectricity and valleytronics. However, the large-scale growth of monolayer TMD films with spatial homogeneity and high electrical performance remains an unsolved challenge. Here we report the preparation of high-mobility 4-inch wafer-scale films of monolayer molybdenum disulphide (MoS<SUB>2</SUB>) and tungsten disulphide, grown directly on insulating SiO<SUB>2</SUB> substrates, with excellent spatial homogeneity over the entire films. They are grown with a newly developed, metal–organic chemical vapour deposition technique, and show high electrical performance, including an electron mobility of 30 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP> at room temperature and 114 cm<SUP>2</SUP> V<SUP>−1</SUP> s<SUP>−1</SUP> at 90 K for MoS<SUB>2</SUB>, with little dependence on position or channel length. With the use of these films we successfully demonstrate the wafer-scale batch fabrication of high-performance monolayer MoS<SUB>2</SUB> field-effect transistors with a 99% device yield and the multi-level fabrication of vertically stacked transistor devices for three-dimensional circuitry. Our work is a step towards the realization of atomically thin integrated circuitry.

생분해에 따른 PLGA 멤브레인의 분해속도 및 pH 변화에 대한 연구

시에위잉(Xie, Yuying),박종순(Park, Jong-Soon),강순국(Kang, Soon-Kuk) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.9

의료용 고분자 PLGA는 높은 생체적합성, 생분해성, 기계적 특성, 생체안정성을 가지고 있으며, 단량체 수량을 조절 함으로서 분해기간을 조절할 수 있는 장점이 있다. 본 논문에서는 상전이법을 이용하여 제조된 분자량과 L/D 타입 구성비가 다른 PLGA 멤브레인들을 인산완충생리식염수 하에서 멤브레인의 분자량과 용액의 온도 조건에 따른 생분해 특성을 유추하 기 위하여 질량 변화와 용액의 pH값 측정하였으며, DSC와 실사현미경을 이용하여 Tg와 표면구조의 변화을 파악하였다. PLGA의 분자량이 증가할수록 가수분해속도는 기하급수적으로 감소하고 있으며, L/D 타입 구성비에 따라 분해속도와 용액 pH변화의 차이가 크게 나타났다. Medical polymer PLGA is biocompatible, biodegradation, mechanical characteristic and biostability, and the degradation time can be adjust by controlling the number of monomer. In this paper, PLGA membranes have different composition ratio by L/D type was prepared by phase transition method. And the PLGA membrane in phosphate buffered saline(PBS) at the different test temperatures for different periods of time to examined for change in mass and measured the pH of degradation media. Measurement of Tg and surface structure was performed using a DSC and Stereoscopic microscope. As the molecular weighter increase, hydrolysis rate was decrease in geometrical progression. According to the composition ratio by L/D type, degradation rate and the change of pH are large.