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Endemic Severe Fever with Thrombocytopenia Syndrome, Vietnam
Tran, Xuan Chuong,Yun, Yeojun,Van An, Le,Kim, So-Hee,Thao, Nguyen T. Phuong,Man, Phan Kim C.,Yoo, Jeong Rae,Heo, Sang Taek,Cho, Nam-Hyuk,Lee, Keun Hwa U.S. Department of Health and Human Services * Cen 2019 Emerging Infectious Diseases Vol.25 No.5
Effect of precursors on Cu2S counter electrode on the quantum dot sensitized solar cell performance
Phuong Ho Nhat,Van Man Tran,Tung Ha Thanh,Jun H. K.,Van Thang Bui,Vinh Lam Quang 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.80 No.12
Counter electrode of Cu2S on fuorine-doped tin oxide glass, which was synthesized by chemical bath deposition method in a nitrogen-purged environment with varying precursors and temperatures, is used for quantum dot sensitized solar cell fabrication. The morphology, composition and crystalline structure of the Cu2S flm were characterized by scanning electron microscopy, energy dispersive X-ray and X-ray difraction analysis. Electrochemical properties of the Cu2S flm were measured by cyclic voltammetry measurement and the highest performance of JSC=18.2 mA/cm2 , VOC=0.57 V, FF=0.38 and η=3.94% were recorded in the cell fabricated by the mixture of CuSO4 and Na2S2O3 precursors (1.0/1.0 ratio). It is the result of the enhancement of electrocatalytic activity, charge transfer and collection, and excited electron lifetime.
Ngoc Thi Bao Nguyen,Hoang Van Nguyen,Nhan Thanh Tran,Phat Tan Vu,Phung My Loan Le,Man Van Tran 대한금속·재료학회 2023 ELECTRONIC MATERIALS LETTERS Vol.19 No.3
High voltage cathode materials LiNi x Mn 2−x O 4 (x = 0.4; 0.5) have been attracting greater attention in developing high energydensity Li-ion battery technology for electrical vehicles and large-scale applications. The main challenge of high voltagecathodes is severe electrolyte decomposition leading to short cell cycle life. In addition, LiNi 0.4 Mn 1.6 O 4 cathode materialprocessed with polyvinylidene fl uoride (PVdF) binder generally suff ers an oxidation decomposition as well as cathodedelamination from current collectors during cycling. Herein, we suggest using sodium carboxymethyl cellulose (CMC),lithium polyacrylic acid (LiPAA) as water-soluble binders for replacing conventional PVdF in cathode processing to demonstratethe eff ectiveness on long-cycling of half-cell Li || LiNi 0.4 Mn 1.6 O 4 , full-cell SiO 2 -graphite || LiNi 0.4 Mn 1.6 O 4 and SiO 2|| LiNi 0.4 Mn 1.6 O 4 . In half-cell, the cells with water-soluble binders-based cathode exhibited a higher discharge capacity thanthe one using PVdF binder (CMC—126.0 mAh/g; LiPAA—125.7 mAh/g; PVdF—117 mAh/g at C/5, respectively). CMCand LiPAA also improve retention capacity up to 90% after 500 cycles at C/3. Interestingly, LiPAA based electrode exhibitsan excellent rate-capability with discharge capacity of 80 mAh/g at 8C. The stability of electrodes was also investigated byelectrode chemical impedance spectroscopy (EIS) and Scanning electron microscope (SEM). In full-cell, CMC and LiPAAbased cells showed eff ectiveness in decreasing transition metal dissolution and preventing the cathode degradation duringlong-cycling through its excellent capacity retention in 200 cycles at C/3.
Do Thi Ha,Trinh Nam Trung,Nguyen Hai Nam,Chu Van Men,Nguyen Bich Thu,Tran Thi Phuong,KiHwan Bae 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.6
The aim of the present study was to investigate effects of the ethyl acetate fraction of an ethanol extract of Coix lachryma-jobi (ECLJ) on glucose uptake and adipocyte differentiation in 3T3-L1 cells. ECLJ phosphorylated AMP-activated protein kinase (AMPK) and its downstream substrate acetyl-coenzymeA carboxylase in 3T3-L1 cells in a time- and dosedependent manner. Moreover, we discovered that compound C inhibits ECLJ-stimulated ACC phosphorylation. In addition,ECLJ exhibited a dose-dependent stimulation of glucose uptake in 3T3-L1 cells, and this increase was obviously attenuated by compound C. ECLJ also caused a decrease in the expression levels of adipogenesis factors such as fatty acid synthase, sterolregulatory-element-binding protein-1c, peroxisome proliferator-activated receptor g, and CAATT=enhancer binding protein a in a dose-dependent manner. Differentiation was examined by Oil red O staining activity after ECLJ treatment for 6 days. ECLJ decreased mean droplet size. These results suggest a possible role for AMPK in the process of adipose differentiation and that ECLJ targeted for adipocyte functions could be effective in improving the symptoms of metabolic syndrome.