A study on the Influencing Factors to China-Pakistan Trade under BRI Initiative

Jun Tang(Jun Tang),Xuanyu Xing(Xuanyu Xing),Tingting Huang(Tingting Huang) 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.1

The Belt and Road Initiative is a grand plan proposed by China to promote the common development and prosperity of China and its partner countries. With the construction of the China-Pakistan Economic Corridor, the flagship of the Belt and Road Initiative, China-Pakistan relations are getting closer, known as the “iron brother”. Economic cooperation is a key priority for both sides. Under the context of the Belt and Road Initiative, this study uses trade data of China and Pakistan to find out the bilateral trade problems and the influencing factors behind them. This study will discuss the above questions and propose some suggestions for policymakers. Specifically, the discussion of the problems was conducted in terms of GDP, population, comparative advantages, international environment, domestic environment, and other factors respectively. In the conclusion part, the author suggests that the two countries should try to improve their domestic/international environment and reduce policy barriers to promote the trade. Modern industrial parks are encouraged to solve the problems. This study on the influencing factors and economic trade relations between China and Pakistan hopes to provide some academic references to the study of the CPEC and provide some guidance to the policy makers.

Production and Characterization of Ethanol- and Protease-Tolerant and Xylooligosaccharides-Producing Endoxylanase from Humicola sp Ly01

( Jun Pei Zhou ),( Qian Wu ),( Rui Zhang ),( Yu Ying Yang ),( Xiang Hua Tang ),( Jun Jun Li ),( Jun Mei Ding ),( Yan Yan Dong ),( Zun Xi Huang ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.6

This paper reports the production and characterization of crude xylanase from the newly isolated Humicola sp. Ly01. The highest (41.8 U/ml) production of the crude xylanase was obtained under the optimized conditions (w/v): 0.5% wheat bran, 0.2% KH2PO4, and 0.5% peptone; initial pH 7.0; incubation time 72 h; 30℃; and 150 rpm. A considerable amount of the crude xylanase was induced using hulless barley bran or soybean meal as the carbon source, but a small amount of the enzyme was produced when supplementary urea was used as the nitrogen source to wheat bran. The crude xylanase showed apparent optimal cellulase-free xylanase activity at 60℃ and pH 6.0, more than 71.8% of the maximum xylanase activity in 3.0-30.0% (v/v) ethanol and more than 82.3% of the initial xylanase activity after incubation in 3.0-30.0% (v/v) ethanol at 30℃ for 2 h. The crude xylanase was moderately resistant to both acid and neutral protease digestion, and released 7.9 and 10.9 μmol/ml reducing sugar from xylan in the simulated gastric and intestinal fluids, respectively. The xylooligosaccharides were the main products of the hydrolysis of xylan by the crude xylanase. These properties suggested the potential of the crude enzyme for being applied in the animal feed industry, xylooligosaccharides production, and high-alcohol conditions such as ethanol production and brewing.

Preparation of W–V functionally gradient material by spark plasma sintering

Tang Yi,Qiu Wenbin,Chen Longqing,Yang Xiaoliang,Song Yangyipeng,Tang Jun 한국원자력학회 2020 Nuclear Engineering and Technology Vol.52 No.8

Functionally gradient material (FGM) is promisingly effective in mitigating the thermal stress between plasma facing materials (PFM) and structural materials. However, the corresponding research with respect to W/V FGM has not been reported yet. In this work, we firstly report the successful fabrication of W/V FGM by a combined technology of mechanical alloying (MA) and spark plasma sintering (SPS). The microhardness and microstructure of the consolidated sample were both investigated. W/V stacks show significantly enhanced microhardness (>100%) compared with pure W plate, which is beneficial to the integral strength of the hybrid structure. Furthermore, we clarify that the different ductility of W and V should be carefully considered, otherwise W/V powder might aggregate and lead to the formation of compositional segregation, and simultaneously unmask the impact of V proportion on the distribution of second phase in WeV binary alloy system. This w

A low-power LDO regulator with high-frequency power supply rejection

Jun Tang(탕준),Jeongjin Roh(노정진) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.11

IRS-2 Partially Compensates for the Insulin Signal Defects in IRS-1^-/- Mice Mediated by miR-33

Tang, Chen-Yi,Man, Xiao-Fei,Guo, Yue,Tang, Hao-Neng,Tang, Jun,Zhou, Ci-La,Tan, Shu-Wen,Wang, Min,Zhou, Hou-De Korean Society for Molecular and Cellular Biology 2017 Molecules and cells Vol.40 No.2

Insulin signaling is coordinated by insulin receptor substrates (IRSs). Many insulin responses, especially for blood glucose metabolism, are mediated primarily through Irs-1 and Irs-2. Irs-1 knockout mice show growth retardation and insulin signaling defects, which can be compensated by other IRSs in vivo; however, the underlying mechanism is not clear. Here, we presented an Irs-1 truncated mutated mouse ($Irs-1^{-/-}$) with growth retardation and subcutaneous adipocyte atrophy. $Irs-1^{-/-}$ mice exhibited mild insulin resistance, as demonstrated by the insulin tolerance test. Phosphatidylinositol 3-kinase (PI3K) activity and phosphorylated Protein Kinase B (PKB/AKT) expression were elevated in liver, skeletal muscle, and subcutaneous adipocytes in Irs-1 deficiency. In addition, the expression of IRS-2 and its phosphorylated version were clearly elevated in liver and skeletal muscle. With miRNA microarray analysis, we found miR-33 was down-regulated in bone marrow stromal cells (BMSCs) of $Irs-1^{-/-}$ mice, while its target gene Irs-2 was up-regulated in vitro studies. In addition, miR-33 was down-regulated in the presence of Irs-1 and which was up-regulated in fasting status. What's more, miR-33 restored its expression in re-feeding status. Meanwhile, miR-33 levels decreased and Irs-2 levels increased in liver, skeletal muscle, and subcutaneous adipocytes of $Irs-1^{-/-}$ mice. In primary cultured liver cells transfected with an miR-33 inhibitor, the expression of IRS-2, PI3K, and phosphorylated-AKT (p-AKT) increased while the opposite results were observed in the presence of an miR-33 mimic. Therefore, decreased miR-33 levels can up-regulate IRS-2 expression, which appears to compensate for the defects of the insulin signaling pathway in Irs-1 deficient mice.

Molecular cloning and characterization of a novel saltspecific responsive WRKY transcription factor gene IlWRKY2 from the halophyte Iris lactea var. chinensis

Jun Tang,Qingquan Liu,Haiyan Yuan,Yongxia Zhang,Weilin Wang,Suzhen Huang 한국유전학회 2018 Genes & Genomics Vol.40 No.8

Iris lactea var. chinensis is a perennial herbaceous halophyte with high salt tolerance and ornamental value. Previous RNA sequencing analysis revealed a transcription factor gene IlWRKY2 expression was upregulated by salt stress. To obtain the full-length sequence, the basic characteristics of IlWRKY2 and its expression pattern under salt stress. Full-length cDNA of IlWRKY2 was cloned by 3′/5′ RACE based on the intermediate sequence obtained by RNA sequencing analysis. Structure analysis of IlWRKY2 were performed by Compute pI/MW tool, PSIPRED and SWISS-MODEL analysis. Sequence analysis of IlWRKY2 were performed by BLAST program, DNAman software, MEGA software and MEME program. IlWRKY2 expression pattern was analyzed by quantitative real-time polymerase chain reaction. The open reading frame of IlWRKY2 is 1338 bp in length, which encodes a protein of 446 amino acids. Amino acid sequence analysis revealed that the IlWRKY2 contains one WRKY domains with a zinc finger motif C–X5–C–X23–H–X–H. Phylogenetic analysis showed that the IlWRKY2 was much closer to EgWRKY41 from Elaeis guineensis and MaWRKY42 from Musa acuminata subsp. malaccensis. Furthermore, the expression of IlWRKY2 in I. lactea var. chinensis shoots was upregulated by different concentrations of NaCl treatment and increased 16-fold after treatment with 200 mM NaCl for 12 h. Obtained the full-length cDNA of IlWRKY2 which belongs to Group II-b WRKY subfamily. IlWRKY2 expression was obviously induced by salt stress in I. lactea var. chinensis shoots and it may play an important role in halophyte I. lactea var. chinensis adaptation to environmental salt stress.

Inconspicuous Nasoethmoidal Encephalocele Might Be Wrongly Diagnosed

Tang, Weng Jun,Sulaiman, Wan Azman Wan Korean Society of Plastic and Reconstructive Surge 2016 Archives of Plastic Surgery Vol.43 No.3

A New Chemosensing Ensemble for Colorimetric Detection of Oxalate in Water

Tang, Li-Jun,Liu, Ming-Hui Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.11

To realize highly selective recognition of oxalate in water, a new chemosensing ensemble that behaves highly selective colorimetric recognition of oxalate in water at pH 7.4 has been developed. The ensemble was constructed by a pyrrole containing mononuclear copper complex and chromeazurol S. The ensemble shows a highly selective recognition of oxalate through an obvious color change from blue to yellow upon the addition of oxalate, whereas, other dicarboxylates such as malonate, succinate, fumarate, maleate, glutarate, adipate, phthalate, isophthalate and terephthalate do not induce any noticeable color changes. The oxalate recognition process is not significantly affected by other coexisting dicarboxylate.

Critical Algorithm for Graph and Image Compression and Transmission Research

Jun Tang 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.12

This article is dedicated to the purpose of introducing the simplification of the triangular-network's multi-resolution, as well as the concept of grid, trigonometry, topographic goading, triangular-sector, etc. In addition, this article proposes a new algorithm that combines the layer-segmentation of the multi-resolution model and the binary space partitioning (BSP) tree, in which the layer-segmentation of the triangular belt is capable of achieving a better result in terms of dissolving the model, therefore creating the foundation of the BSP tree's structural setup. The purpose of finding BSP tree, on the other hand, is to identify sensitive data from the non-sensitive one, so that whatever data that is contacted with the viewpoint can be fully transferred and displayed. Speaking of the designing part of the database, this algorithm combines the latest techniques such as the XML.ADO.NET, and thereby capable of designing transfer plans accordingly.

Low-Power Fast-Transient Capacitor-Less LDO Regulator With High Slew-Rate Class-AB Amplifier

Tang, Jun,Lee, Jaeseong,Roh, Jeongjin IEEE 2019 IEEE Transactions on Circuits and Systems II: Expr Vol. No.

<P>This brief presents a low-power fast-transient capacitor-less low-dropout regulator (CL-LDO) for system-on-a-chip applications. A low-quiescent-current class-AB amplifier with embedded slew-rate enhancement (SRE) circuit is proposed to improve both current efficiency and load transient performance. As the SRE circuit is directly controlled by the amplifier, only a minimum hardware overhead is required. The proposed CL-LDO is fabricated in a 0.18- <TEX>${\mu }\text{m}$</TEX> standard CMOS process. It occupies an active area of 0.031 mm<SUP>2</SUP> and consumes a quiescent current of <TEX>$10.2~\mu \text{A}$</TEX>. It is capable of delivering a maximum load current of 100 mA at 1.0-V output from a 1.2-V power supply. The measured results show that a settling time of <TEX>$0.22~\mu \text{s}$</TEX> is achieved for load steps from 1 mA to 100 mA (and vice versa) with an edge time of <TEX>$0.1~\mu \text{s}$</TEX>.</P>