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Co3(PO4)2-Coated LiV3O8 as Positive Materials for Rechargeable Lithium Batteries
Ling-Ling Xie,Li-Qin You,Xiao-Yu Cao,Chao-Feng Zhang,Da-Wei Song,Ling-Bo Qu 대한금속·재료학회 2012 ELECTRONIC MATERIALS LETTERS Vol.8 No.4
Co3(PO4)2-coated LiV3O8 has been successfully synthesized and used as positive material for rechargeable lithium batteries by a facile liquid phase method. The as-prepared powders were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and the galvanostatic discharge/charge experiments. As-prepared Co3(PO4)2-coated LiV3O8 forms a good layered structure with a poor cyrstallinity. SEM reveals that Co3(PO4)2-coated LiV3O8 has uniform particle distribution and reduced particle size when compared with bare one. The Co3(PO4)2 coating layer is about 33 - 59 nm forming a continuous lumps attached to LiV3O8 particle surface. Co3(PO4)2-coated LiV3O8 electrode shows increased capacity and more stable cycling. The first and 35th discharge capacities of the Co3(PO4)2-coated LiV3O8electrode are 322.8 mAh g−1 and 235.7 mAh g−1 in the range of 4.0 - 1.8 V at a current rate of 30 mA g−1, respectively. The improved electrochemical performance is assigned to the greatly reduced LiV3O8 particle with uniform morphology. Co3(PO4)2-coating further benefits the phase transitions of LiV3O8 during discharge/charge while preventing parasite reactions between electrode surface and electrolyte.
Rapid in vitro Germination of Zygotic Embryos via Endosperm Removal in Eleutherococcus senticosus
You Xiang-Ling,Choi Yong-Eui,Yi Jae-Seon The Korean Society of Plant Biotechnology 2005 Plant molecular biology and biotechnology research Vol.7 No.1
Eleutherococcus senticosus (also called Acanthopanax senticosus), belonging to Araliaceae family, has been used as an important medicinal woody plant. Mature seeds of Eleutherococcus senticosus have rudimentary (extremely immature) zygotic embryos and require a long-term stratification for about 18 months to induce germination. Here, through the methods of endosperm removal and other exogenous treatments, we investigated the factors for inducing rudimentary embryos by in vitro culture, Rudimentary zygotic embryos in seeds were at globular to heart-shaped stage at about $250{\mu}m$ in length just after harvest of fruits. When the seeds without testa were cultured on 1/2 MS (Murashige and Skoog 1962) medium, they did not germinate regardless of medium and sucrose concentrations but the removal of endosperm tissue markedly stimulated the growth of rudimentary zygotic embryos. The embryo reached ear-lier maturation, once when the endosperm surrounding the rudimentary embryos was removed. Rudimentary zygotic embryos developed cotyledons within 3 weeks of culture after endosperm emoval. However, post-mature zygotic embryos failed to germinate though they were morphologically normal, indicating another dormancy of embryos. $GA_3\;(2.0\;\cal{mg/L})$ and/or charcoal ($0.2\%$) treatment rapidly enhanced the germination of zygotic embryos. These results suggest that E. senticosus seeds have double dormancy; i. e. morphological rudimentary dormancy influenced by surrounding endosperm and physiological dormancy after post-maturation of zygotic embryos. Based on the above findings, we established the rapid germination of rudimentary zygotic embryos by in vitro culture of excised seeds with endosperm removal and $GA_3$ treatment.
Genetic Diversity for Rice Blast Management
(You Yong Zhu),(Hai Ru Chen),(Yun Yue Wang),(Zuos Hea Li),(Yan Li),(Jing Hua Fan),(Jian Bing Chen),(Jin Xiang Fan),(Shi Sheng Yang),(Guang Liang Ma),(Ling Ping Hu),(Jin Yu Zou),(Christopher C . Mundt) 한국균학회 2001 Proceedings of the Fifth Korea-China Joint Symposi Vol.- No.-
Ling Chen,Cheng-Zhi Zhan,Tao Wang,Hua You,Rui Yao 연세대학교의과대학 2020 Yonsei medical journal Vol.61 No.1
Purpose: Curcumin exerts its anti-cancer effects, partly by targeting special microRNAs, in human cancers. MiR-21 is a key oncomirin carcinogenesis of multiple human cancers. Here, we aimed to further explore the mechanistic insight into the link betweencurcumin and miR-21 on diffuse large B-cell lymphoma (DLBCL). Materials and Methods: Quantitative real-time PCR assays were performed to assess the levels of miR-21 and Von Hippel-Lindau(VHL) mRNA. In situ hybridization assay was used for miR-21 expression visualization in lymphoma tissues. Western blot was usedfor determination of VHL protein, Ki-67, caspase-3, and cleaved caspase-3 levels. Dual-luciferase reporter assay and RNA immunoprecipitationassay were employed to confirm the direct target of miR-21. MTT assay, flow cytometric analysis, and transwell assaywere used to evaluate cell proliferation, apoptosis, and migration and invasion capacities, respectively. Results: Curcumin repressed the proliferation, migration, and invasion abilities and promoted apoptosis in SU-DHL-8 cells. Curcumininhibited miR-21 expression and curcumin exerted its anti-proliferation, anti-migration, anti-invasion, and pro-apoptosiseffects by miR-21 in SU-DHL-8 cells. VHL was a direct target of miR-21. Moreover, curcumin exerted its regulatory effects on SUDHL-8 cells by VHL. Conclusion: Curcumin exerted its anti-proliferation, anti-migration, anti-invasion, and pro-apoptosis functions, at least partly, byrepressing miR-21 and regulating VHL expression in DLBCL cell line. Our findings provided a possible molecular mechanism ofcurcumin-mediated anti-cancer effect.