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Kil, Eunx2010,Hye,Choi, Keunx2010,Ho,Ha, Hyox2010,Jeong,Xu, Sheng,Rogers, John A.,Kim, Mi Ri,Lee, Youngx2010,Gi,Kim, Kwang Man,Cho, Kuk Young,Lee, Sangx2010,Young WILEY‐VCH Verlag 2013 ADVANCED MATERIALS Vol.25 No.10
<P><B>A class of imprintable, bendable, and shape‐conformable polymer electrolyte</B> with excellent electrochemical performance in a lithium battery system is reported. The material consists of a UV‐cured polymer matrix, high‐boiling point liquid electrolyte, and Al<SUB>2</SUB>O<SUB>3</SUB> nanoparticles, formulated for use in lithium‐ion batteries with 3D‐structured electrodes or flexible characteristics. The unique structural design and well‐tuned rheological characteristics of the UV‐curable electrolyte mixture, in combination with direct UV‐assisted nanoimprint lithography, allow the successful fabrication of polymer electrolytes in geometries not accessible with conventional materials.</P>
Shi, Yifeng,Hua, Chunxiu,Li, Bin,Fang, Xiangpeng,Yao, Chaohua,Zhang, Yichi,Hu, Yongx2010,Sheng,Wang, Zhaoxiang,Chen, Liquan,Zhao, Dongyuan,Stucky, Galen D. WILEY‐VCH Verlag 2013 Advanced functional materials Vol.23 No.14
<P><B>Abstract</B></P><P>Highly ordered mesoporous crystalline MoSe<SUB>2</SUB> is synthesized using mesoporous silica SBA‐15 as a hard template via a nanocasting strategy. Selenium powder and phosphomolybdic acid (H<SUB>3</SUB>PMo<SUB>12</SUB>O<SUB>40</SUB>) are used as Se and Mo sources, respectively. The obtained products have a highly ordered hexagonal mesostructure and a rod‐like particle morphology, analogous to the mother template SBA‐15. The UV‐vis‐NIR spectrum of the material shows a strong light absorption throughout the entire visible wavelength region. The direct bandgap is estimated to be 1.37 eV. The high surface area MoSe<SUB>2</SUB> mesostructure shows remarkable photocatalytic activity for the degradation of rhodamine B, a model organic dye, in aqueous solution under visible light irradiation. In addition, the synthesized mesoporous MoSe<SUB>2</SUB> possess a reversible lithium storage capacity of 630 mAh g<SUP>−1</SUP> for at least 35 cycles without any notable decrease. The rate performance of mesoporous MoSe<SUB>2</SUB> is much better than that of analogously synthesized mesoporous MoS<SUB>2</SUB>, making it a promising anode for the lithium ion battery.</P>
QKI, a miR‐200 target gene, suppresses epithelial‐to‐mesenchymal transition and tumor growth
Kim, Eun Ju,Kim, Jeong Seon,Lee, Sieun,Lee, Heejin,Yoon, Jungx2010,Sook,Hong, Ji Hyung,Chun, Sang Hoon,Sun, Der Sheng,Won, Hye Sung,Hong, Soon Auck,Kang, Keunsoo,Jo, Jeong Yeon,Choi, Minyoung,Shin, John Wiley Sons, Inc. 2019 International journal of cancer: Journal internati Vol.145 No.6
<P>The microRNA‐200 (miR‐200) family plays a major role in specifying epithelial phenotype by preventing expression of the transcription repressors ZEB1 and ZEB2, which are well‐known regulators of the epithelial‐to‐mesenchymal transition (EMT) in epithelial tumors including oral squamous cell carcinoma (OSCC). Here, we elucidated whether miR‐200 family members control RNA‐binding protein quaking (QKI), a newly identified tumor suppressor that is regulated during EMT. We predicted that miR‐200a and miR‐200b could recognize <I>QKI</I> 3′‐UTR by analyzing TargetScan and The Cancer Genome Atlas head and neck squamous cell carcinoma (HNSCC) dataset. Forced expression of miR‐200b/a/429 inhibited expression of ZEB1/2 and decreased cell migration in OSCC cell lines CAL27 and HSC3. QKI expression was also suppressed by miR‐200 overexpression, and the 3′‐UTR of <I>QKI</I> mRNA was directly targeted by miR‐200 in luciferase reporter assays. Interestingly, shRNA‐mediated knockdown of <I>QKI</I> led to pronounced EMT and protumor effects in both <I>in vitro</I> and <I>in vivo</I> studies of OSCC. Furthermore, high expression of QKI protein is associated with favorable prognosis in surgically resected HNSCC and lung adenocarcinoma. In conclusion, QKI increases during EMT and is targeted by miR‐200; while, it suppresses EMT and tumorigenesis. We suggest that QKI and miR‐200 form a negative feedback loop to maintain homeostatic responses to EMT‐inducing signals.</P>
Sun, G.A.,Wang, X.L.,Wang, Y.D.,Woo, W.C.,Wang, H.,Liu, X.P.,Chen, B.,Fu, Y.Q.,Sheng, L.S.,Ren, Y. Elsevier Sequoia 2013 Materials science & engineering. properties, micro Vol.560 No.-
High-energy synchrotron X-ray diffraction technique was used to in-situ characterize microstructure, lattice strain, and phase transition behavior of a Ni<SUB>47</SUB>Ti<SUB>44</SUB>Nb<SUB>9</SUB> shape memory alloy. Phase transformation kinetics and deformation mechanisms were studied under a uniaxial tension at three testing temperatures, i.e., -70<SUP>o</SUP>C, 25<SUP>o</SUP>C, and 150<SUP>o</SUP>C. At a testing temperature of -70<SUP>o</SUP>C, a complicated phase transformation with four stages of micromechanical deformation was identified which is associated with changes of martensite substructures. At room temperature of 25<SUP>o</SUP>C, there was no stress-induced selection process of variants of B19' phases observed. Whereas at a testing temperature of 150<SUP>o</SUP>C, there was no any phase transformation observed. It is verified that β-Nb phase, an effective stabilizer for the austenite, delays the process of martensitic transformation and relaxes the strain energy without strengthening the matrix. This new finding is important to understand the relationship between the micromechanical deformation behavior and phase transformations in the Ni<SUB>47</SUB>Ti<SUB>44</SUB>Nb<SUB>9</SUB> SMA.
Does the recent warming hiatus exist over Northern Asia for winter wind chill temperature?
Ma, Ying,Mao, Rui,Feng, Shengx2010,Hui,Gong, Daox2010,Yi,Kim, Seongx2010,Joong John Wiley Sons, Ltd 2017 International journal of climatology Vol.37 No.7
<P><B>ABSTRACT</B></P><P>Wind chill temperature (WCT) describes the joint effect of wind velocity and air temperature on exposed body skin and could support policymakers in designing plans to reduce the risks of notably cold and windy weather. This study examined winter WCT over Northern Asia during 1973–2013 by analysing <I>in situ</I> station data. The winter WCT warming rate over the Tibetan Plateau (TP) slowed during 1999–2013 (−0.04 °C decade<SUP>−1</SUP>) compared with that of during 1973–1998 (0.67 °C decade<SUP>−1</SUP>). The winter WCT warming hiatus has also been observed in the remainder of Northern Asia with trends of 1.11 °C decade<SUP>−1</SUP> during 1973–1998 but −1.02 °C decade<SUP>−1</SUP> during 1999–2013, except for the Far East (FE) of Russia, where the winter WCT has continued to heat up during both the earlier period of 1973–1998 (0.54 °C decade<SUP>−1</SUP>) and the recent period of 1999–2013 (0.75 °C decade<SUP>−1</SUP>). The results indicate that the influence of temperature on winter WCT is greater than that of wind speed over Northern Asia. Atmospheric circulation changes associated with air temperature and wind speed were analysed to identify the causes for the warming hiatus of winter WCT over Northern Asia. The distributions of sea‐level pressure and 500‐hPa height anomalies during 1999–2013 transported cold air from the high latitudes to middle latitudes, resulting in low air temperature over Northern Asia except for the FE of Russia. Over the TP, the increase in wind speed offset the increase in air temperature during 1999–2013. For the FE, the southerly wind from the Western Pacific drove the temperature up during the 1999–2013 period through warm advection.</P>
JOUNG, BOYOUNG,ZHANG, HONG,SHINOHARA, TETSUJI,MARUYAMA, MITSUNORI,HAN, SEONGWOOK,KIM, DAEHYEOK,CHOI, EUEx2010,KEUN,ON, YOUNGx2010,KEUN,LIN, SHIENx2010,FONG,CHEN, PENGx2010,SHENG Blackwell Publishing Inc 2011 Journal of cardiovascular electrophysiology Vol.22 No.4
<P> <B>Delayed Afterdepolarization in Sinoatrial Node. <I>Introduction:</I></B> Recent evidence indicates that spontaneous sarcoplasmic reticulum Ca release and Na‐Ca exchanger current activation contribute to the sinoatrial node (SAN) automaticity. These findings suggest that SAN activity may share mechanisms that underlie both automaticity and triggered activity. The aim of this study is to test the hypothesis that spontaneous, nonvoltage gated, intracellular Ca (Ca<SUB>i</SUB>) elevation may induce delayed afterdepolarization (DAD) in intact SAN during isoproterenol infusion.</P><P> <B> <I>Methods and Results:</I> </B> We simultaneously mapped Ca<SUB>i</SUB> and membrane potential in 31 isolated Langendorff‐perfused canine right atriums (RA). Isoproterenol increased heart rate and late diastolic Ca<SUB>i</SUB> elevation (LDCAE) of the superior SAN, leading to consistent SAN automaticity in all 31 RAs. However, DAD‐like diastolic depolarizations (DD) were transiently observed in 4 RAs during isoproterenol infusion. These DAD‐like DDs were preceded by LDCAE, but did not trigger a full action potential. The LDCAE preceding DAD‐like DDs had smaller amplitude (0.41 ± 0.08 AU vs 0.48 ± 0.07 AU, P = 0.001) and less steep slopes (3.7 ± 1.3 AU/s vs 4.8 ± 1.4 AU/s, P = 0.001) than that of sinus beats. The coupling interval of DAD‐like DDs was longer than that of the preceding normal beats (407 ± 48 ms vs 371 ± 44 ms, P = 0.002).</P><P> <B> <I>Conclusion:</I> </B> The isoproterenol‐induced LDCAE of superior SAN induced a full action potential in most cases. However, if the LDCAE was too small to trigger an action potential, then it induces only DAD‐like DD. The failure of DAD‐like DD to consistently trigger a sinus beat is a novel mechanism of atrial arrhythmogenesis. <I>(J Cardiovasc Electrophysiol, Vol. 22, pp. 448‐454)</I></P>
Jin, Jiezhu,Lu, Shengx2010,Guo,Chanthad, Chalathorn,Zhang, Qiming,Haque, M. A.,Wang, Qing WILEY‐VCH Verlag 2011 Advanced Materials Vol.23 No.33
<P><B>Multiferroic laminate composites</B> consisting of chain‐end cross‐linked ferroelectric polymers and magnetostrictive Metglas are reported. The composites exhibit a greatly enhanced multiferroic voltage coefficient and sensitivity relative to analogous composites. These remarkable properties are attributed to high piezoelectric and electromechanical coupling coefficients, because of the formation of larger crystalline sizes and concurrent improvement in the polarization ordering in the cross‐linked polymers.</P>