http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Xu, Lei,Qin, Chuanxiang,Wan, Yingpeng,Xie, Hongde,Huang, Yanlin,Qin, Lin,Seo, Hyo Jin Elsevier 2017 JOURNAL- TAIWAN INSTITUTE OF CHEMICAL ENGINEERS Vol.71 No.-
<P><B>Abstract</B></P> <P> <I>A</I> <SUB>2</SUB>NiWO<SUB>6</SUB> (<I>A</I> =Ca, Sr) double perovskite semiconductors were prepared via the sol–gel method. The crystal phases were confirmed via X-ray powder diffraction (XRD) measurements together with Rietveld refinements. The morphological and chemical properties of the samples were investigated by the scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), and the specific surface area measurements. The optical absorptions and the band structures of the two double perovskites were discussed based on the on the experimental results and theoretical calculation. The d–d allowed transitions in Ni<SUP>2</SUP> <SUP>+</SUP>–O octahedra have great contributions to the narrow band-gap. The Ni<SUP>2+</SUP>-containing tungstate perovskites were potential photocatalysts, which are efficient for its photodegradation for methylene blue (MB) under the irradiation of visible light (λ<ce:italic/>> 420nm). The photocatalytic activities were attributed to the special structure properties and multivalent Ni and W ions in the perovskite lattices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>A</I> <SUB>2</SUB>NiWO<SUB>6</SUB> (<I>A</I> =Ca, Sr) nano-perovskite were prepared via the sol–gel method. </LI> <LI> The crystalline crystal structure was refined. </LI> <LI> The optical absorption and band structure were clarified. </LI> <LI> The photocatalysis activities were discussed on structural properties. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
The Yin-Yang of DNA Damage Response: Roles in Tumorigenesis and Cellular Senescence
Li, Xiaoman,Xu, Hongde,Xu, Chongan,Lin, Meina,Song, Xiaoyu,Yi, Fei,Feng, Yanling,Coughlan, Kathleen A.,Cho, William Chi-shing,Kim, Sang Soo,Cao, Liu MDPI 2013 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.14 No.2
<P>Senescent cells are relatively stable, lacking proliferation capacity yet retaining metabolic activity. In contrast, cancer cells are rather invasive and devastating, with uncontrolled proliferative capacity and resistance to cell death signals. Although tumorigenesis and cellular senescence are seemingly opposite pathological events, they are actually driven by a unified mechanism: DNA damage. Integrity of the DNA damage response (DDR) network can impose a tumorigenesis barrier by navigating abnormal cells to cellular senescence. Compromise of DDR, possibly due to the inactivation of DDR components, may prevent cellular senescence but at the expense of tumor formation. Here we provide an overview of the fundamental role of DDR in tumorigenesis and cellular senescence, under the light of the Yin-Yang concept of Chinese philosophy. Emphasis is placed on discussing DDR outcome in the light of <I>in vivo</I> models. This information is critical as it can help make better decisions for clinical treatments of cancer patients.</P>