7,823 research outputs found
Application of multiphoton fluorescence and second harmonic generation microscopy to monitoring photoaging
No full textIn situ TEM observation of phase transition of the nanoscopic patterns on baroplastic block copolymer films during nanoindentation
No full textWe investigated the in situ phase transition of the nanoscopic patterns on block copolymer thin films during nanoindentation by using a transmission electron microscope (TEM) with a specially designed nanoindenter. For the first time, we observed directly an in situ phase transition from lamellar microdomains to disordered states during the nanoindentation on a baroplastic polystyrene-block-poly(n-pentyl methacrylate) copolymer (PS-b-PnPMA) film. Through the in situ TEM observation, the mechanism of the nanoscopic pattern formation on a block copolymer thin film by indentation is fully understood.X1133sciescopu
Dynamically enhanced magnetodielectric effect and magnetic-field-controlled electric relaxations in La-doped BiMnO3
No full textBi ions of multiferroic BiMnO3 were replaced with La ions in order to induce an overlap of the ferroelectric and ferromagnetic transitions in temperature and thus enhance the interproperty coupling. Twenty percent La-doped BiMnO3 in thin-film form shows a broad ferroelectric transition below 150 K; spontaneous magnetization also develops in the transition region. The saturation magnetization and polarization reach 1.6 mu(B)/Mn and 12 mu C/cm(2) at 5 K, respectively. This new magnetic ferroelectric shows a greatly enhanced magnetodielectric effect in the transition region with maximum 45% at 9 T, which is a 70-fold increase compared to that of the pure bulk compound. It is demonstrated that the magnetodielectric effect is dynamically enhanced due to a phenomenon of magnetic-field controlled electric relaxations
Genetic polymorphisms in CYP1A1 and GSTM1 predispose humans to PCBs/PCDFs-induced skin lesions.
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Effects of fluoxetine on 24h rhythms of melatonin and prolactin secretion in patients with premenstrual syndrome (PMS).
No full textCrucial role of extracellular signal-regulated kinase pathway in reactive oxygen species-mediated endothelin-1 gene expression induced by endothelin-1 in rat cardiac fibroblasts.
No full textWellesly Sh. W. to Mr. James Meredith (2 October 1962)
No full textSigned by Wellesly Sh. W.https://egrove.olemiss.edu/mercorr_pro/1531/thumbnail.jp
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