http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Proteomic Comparison between Salmonella Typhimurium and Salmonella Typhi
Yue Wang,Kuan-Yeh Huang,Yanan Huo 한국미생물학회 2014 The journal of microbiology Vol.52 No.1
The genus Salmonella contains more than 2500 serovars. While most cause the self-limiting gastroenteritis, a few serovars can elicit typhoid fever, a severe systemic infection. S. enterica subsp. enterica serovar Typhimurium and S. Typhi are the representatives of the gastroenteritis and typhoid fever types of Salmonella. In this study, we adopted Stable Isotope Labeling with Amino acids in Cell culture (SILAC) technology to quantitatively compare the proteomes of the two serovars. We found several proteins with serovar-specific expression, which could be developed as new biomarkers for clinical serotype diagnosis. We found that flagella and chemotaxis genes were down-regulated in S. Typhi in comparison with S. Typhimurium. We attributed this observation to the fact that the smooth cellular structure of S. Typhi may better fit its systemic lifestyle. Instead of known virulence factors that were located within Salmonella Pathogenecity Islands, a number of core genes, which were involved in metabolism and transport of carbohydrates and amino acids, showed differential expression between the two serovars. Further studies on the roles of these differentially-expressed genes in the pathogenesis should be undertaken.
The effect of Zn(2+) on Pelodiscus sinensis creatine kinase: unfolding and aggregation studies.
Wang, Su-Fang,Lee, Jinhyuk,Wang, Wei,Si, Yue-Xiu,Li, Caiyan,Kim, Tae-Rae,Yang, Jun-Mo,Yin, Shang-Jun,Qian, Guo-Ying Adenine Press 2013 Journal of biomolecular structure & dynamics Vol.31 No.6
<P>We studied the effects of Zn(2+) on creatine kinase from the Chinese soft-shelled turtle, Pelodiscus sinensis (PSCK). Zn(2+) inactivated the activity of PSCK (IC(50)?=?.079??.004?mM) following first-order kinetics consistent with multiple phases. The spectrofluorimetry results showed that Zn(2+) induced significant tertiary structural changes of PSCK with exposure to hydrophobic surfaces and that Zn(2+) directly induced PSCK aggregation. The addition of osmolytes such as glycine, proline, and liquaemin successfully blocked PSCK aggregation, recovering the conformation and activity of PSCK. We measured the ORF gene sequence of PSCK by rapid amplification of cDNA end and simulated the 3D structure of PSCK. The results of molecular dynamics simulations showed that eight Zn(2+) bind to PSCK and one Zn(2+) is predicted to bind in a plausible active site of creatine and ATP. The interaction of Zn(2+) with the active site could mostly block the activity of PSCK. Our study provides important insight into the action of Zn(2+) on PSCK as well as more insights into the PSCK folding and ligand-binding mechanisms, which could provide important insight into the metabolic enzymes of P. sinensis.</P>
Yue-Long Lyu,Xiao-Xin Liu,Peng-Yuan Wang,Erni, Daniel,Qun Wu,Cong Wang,Nam-Young Kim,Fan-Yi Meng Institute of Electrical and Electronics Engineers 2016 IEEE transactions on antennas and propagation Vol.64 No.6
<P>In this paper, we propose an approach to realize substrate integrated waveguide (SIW)-based leaky-wave antennas (LWAs) supporting continuous beam scanning from backward to forward above the cutoff frequency. First, through phase delay analysis, it was found that SIWs with straight transverse slots support backward and forward radiation of the -1-order mode with an open-stopband (OSB) in between. Subsequently, by introducing additional longitudinal slots as parallel components, the OSB can be suppressed, leading to continuous beam scanning at least from -40 degrees through broadside to 35 degrees. The proposed method only requires a planar structure and obtains less dispersive beam scanning compared with a composite right/left-handed (CRLH) LWA. Both simulations and measurements verify the intended beam scanning operation while verifying the underlying theory.</P>
Wang, Yue,Kang, Kyung-Mun,Kim, Minjae,Park, Hyung-Ho Elsevier 2018 THIN SOLID FILMS - Vol.660 No.-
<P><B>Abstract</B></P> <P>Owing to oxygen vacancies, the as-prepared ZnO normally shows n-type semiconducting characteristic. This has restricted the preparation of high-quality p-type ZnO and the application of ZnO optoelectronic devices. Therefore, we studied a method of using H<SUB>2</SUB>O<SUB>2</SUB> as an oxygen source to passivate oxygen vacancies (V<SUB>o</SUB>) in ZnO films via atomic layer deposition (ALD). The temperature range for the self-limited growth of crystalline ZnO thin films by ALD using diethylzinc and H<SUB>2</SUB>O<SUB>2</SUB> was found to be in the range of 80 to 150 °C. Our results show that the use of H<SUB>2</SUB>O<SUB>2</SUB> as an oxygen source can provide an O-rich condition (instead of H<SUB>2</SUB>O) for the growth of ZnO film, with a total preferential (002) orientation of the growth plane and decreased grain size. Further, the O-rich growth environment can suppress the formation of V<SUB>o</SUB> and zinc interstitials and decrease the carrier concentration in ZnO (from 2.525 × 10<SUP>19</SUP> cm<SUP>−3</SUP> to 1.695 × 10<SUP>12</SUP> cm<SUP>−3</SUP>). This can lead to an increase in the film resistivity from 1.717 × 10<SUP>−2</SUP> Ω·cm for a ZnO film prepared using H<SUB>2</SUB>O to 1.348 × 10<SUP>4</SUP> Ω·cm for a ZnO film prepared using H<SUB>2</SUB>O<SUB>2</SUB>. Thus, H<SUB>2</SUB>O<SUB>2</SUB> could be used to passivate V<SUB>o</SUB> in ZnO at a low temperature, and it could be beneficial for the preparation of p-type ZnO films.</P> <P><B>Highlights</B></P> <P> <UL> <LI> H<SUB>2</SUB>O<SUB>2</SUB> was proved to provide more oxygen than H<SUB>2</SUB>O for ALD growth of ZnO film. </LI> <LI> The oxygen-rich condition of H<SUB>2</SUB>O<SUB>2</SUB> can passivate the oxygen vacancy in ZnO film. </LI> <LI> Vacancy decrease leads to carrier concentration decrease and resistivity increase. </LI> <LI> H<SUB>2</SUB>O<SUB>2</SUB> passivates oxygen vacancy efficiently at low temperature than high temperature. </LI> </UL> </P>
Systematic polymorphism analysis of the CYP2C9 gene in Chinese Han and Tibetan populations
Yue-Wen Wang,Xiao-Hong Meng,Wei Yan,Xiao-Qing Zhang,Jin Yang 한국유전학회 2012 Genes & Genomics Vol.34 No.3
Study about polymorphism of the CYP2C9 was not reported in the Chinese Tibetan population and there was no comparison of genetic polymorphism pattern of CYP2C9 between Chinese Han and Tibetan populations. Here we screened the genetic polymorphisms of functional regions of the CYP2C9in 100 unrelated healthy Chinese Han and Tibetan volunteers,respectively, using direct sequencing. A total of 20 variants were detected and there were different distribution of allelic and genotype frequencies, linkage disequilibrium patterns,haplotype structures and htSNPs between the two populations. CYP2C9*3 is a major functional variant of CYP2C9 in the two populations and *11 allele was only detected in Tibetan population. The determined genetic information of CYP2C9in Chinese Han and Tibetan populations might serve as a baseline for larger studies on determining metabolic phenotypes of CYP2C9 substrate drugs and also provide important data for the advance of personalized medicine in Chinese Han and Tibetan populations.
Structure and Electrical Performance of Na<sub>2</sub>C<sub>6</sub>O<sub>6</sub> under High Pressure
Wang, Xuan,Zhang, Peijie,Tang, Xingyu,Guan, Junjie,Lin, Xiaohuan,Wang, Yajie,Dong, Xiao,Yue, Binbin,Yan, Jinyuan,Li, Kuo,Zheng, Haiyan,Mao, Ho-kwang American Chemical Society 2019 The Journal of Physical Chemistry Part C Vol. No.
<P>Sodium rhodizonate (Na<SUB>2</SUB>C<SUB>6</SUB>O<SUB>6</SUB>) has very high theoretical capacity as a positive electrode material of sodium-ion batteries, but it still has problems such as low actual capacity and poor electronic/ionic conductivity. In order to improve its conductivity, we investigated its structure and electrical properties under high pressure. By performing in situ X-ray diffraction, Raman, infrared absorption, and alternating current impedance spectroscopy in the range of 0-30 GPa at room temperature, we observed a phase transition at ∼11 GPa, with the conductivity increasing by an order of magnitude. Above ∼20 GPa, Na<SUB>2</SUB>C<SUB>6</SUB>O<SUB>6</SUB> gradually amorphized. During the decompression process, the pressure regulation of the structure and properties of the material are reversible. Our study shows that applying external pressure is an effective tool to improve the conductivity of molecular battery materials. The investigation will help to obtain next-generation electrode materials.</P> [FIG OMISSION]</BR>