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Guo L, Long M, Huang Y, Wu G, Deng W, Yang X, Li B, Meng Y, Cheng L, Fan L, Zhang H, Zou L. Antimicrobial and disinfectant resistance of Escherichia coli isolated from giant pandas. J Appl Microbiol 2015; 119:55-64. [PMID: 25846200 DOI: 10.1111/jam.12820] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 03/12/2015] [Accepted: 03/30/2015] [Indexed: 11/29/2022]
Abstract
AIMS The study aims to demonstrate the antimicrobial and disinfectant resistance phenotypes and genotypes of Escherichia coli isolates obtained from giant pandas (Ailuropoda melanoleuca). METHODS AND RESULTS Antimicrobial testing was performed according to the standard disk diffusion method. The minimal inhibitory concentrations (MICs) of disinfectants were determined using the agar dilution method. All isolates were screened for the presence of antimicrobial and disinfectant resistance genes and further analysed for genetic relatedness by pulse-field gel electrophoresis (PFGE). Results showed that 46·6% of the isolates were resistant to at least one antimicrobial. Escherichia coli isolates showed resistance to fewer antimicrobials as panda age increased. Among antimicrobial-resistant E. coli isolates, the antimicrobial resistance genes blaCTX-M (88·2%) and sul1 (92·3%) were most prevalent. The disinfectant resistance genes emrE, ydgE/ydgF, mdfA and sugE(c) were commonly present (68·2-98·9%), whereas qac and sugE(p) were relatively less prevalent (0-21·3%). The frequencies of resistance genes tended to be higher in E. coli isolated in December than in July, and PFGE profiles were also more diverse in isolates in December. The qacEΔ1 and sugE(p) genes were higher in adolescent pandas than in any other age groups. PFGE revealed that antimicrobial resistance correlated well with sampling time and habitat. CONCLUSIONS This study demonstrated that antimicrobial and disinfectant resistance was common in giant panda-derived E. coli, and the antimicrobial resistance was associated with sampling time and habitat. Escherichia coli could serve as a critical vector in spreading disinfectant and antimicrobial resistance. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study that demonstrated the phenotypic and genetic characterizations of antimicrobial and disinfectant resistance in E. coli isolates from more than 60 giant pandas. Frequent transfer of pandas to other cages may lead to the dissemination of antimicrobial resistance. The study highlights the need for regularly monitoring the antimicrobial and disinfectant resistance in bacteria from giant pandas.
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Hong W, Chen S, Sun B, Arnould MA, Meng Y, Li Y. Is a polymer semiconductor having a "perfect" regular structure desirable for organic thin film transistors? Chem Sci 2015; 6:3225-3235. [PMID: 29142690 PMCID: PMC5657407 DOI: 10.1039/c5sc00843c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 03/28/2015] [Indexed: 11/21/2022] Open
Abstract
This study utilized high temperature NMR and matrix-assisted laser desorption/ionization time-of-flight (MALDI-ToF) mass spectrometry to reveal that appreciable amounts of structural defects are present in the diketopyrrolopyrrole (DPP)-quaterthiophene copolymers (PDQT) synthesized by the Stille coupling polymerization with Pd(PPh3)2Cl2, Pd2(dba)3/P(o-tol)3, and Pd(PPh3)4 catalyst systems. It was proposed that these structural defects were produced via homocoupling side reactions of the C-Br bonds and the organostannane species. Model Stille coupling reactions further substantiated that the amount of structural defects are catalyst-dependent following the order of Pd(PPh3)2Cl2 > Pd2(dba)3/P(o-tol)3 > Pd(PPh3)4. To verify the structural assignments, "perfect" structurally regular PDQT polymers were prepared using Yamamoto coupling polymerization. When compared to the structurally regular polymers, the polymers containing defects exhibited notable redshifts in their absorption spectra. Surprisingly, the "perfect" structurally regular polymers showed poor molecular ordering in thin films and very low charge transport performance as channel semiconductors in organic thin film transistors (OTFTs). On the contrary, all the "defected" polymers exhibited much improved molecular ordering and significantly higher charge carrier mobility.
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Tang L, Luo W, Xiao M, Wang S, Meng Y. One-pot synthesis of terpolymers with long l
-lactide rich sequence derived from propylene oxide, CO2
, and l
-lactide catalyzed by zinc adipate. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27617] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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204
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Liu GX, Liu A, Meng Y, Shan FK, Shin BC, Lee WJ, Cho CR. Annealing Dependence of Solution-Processed Ultra-Thin ZrOx Films for Gate Dielectric Applications. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2015; 15:2185-2191. [PMID: 26413638 DOI: 10.1166/jnn.2015.10228] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ultra-thin ZrOx thin films on Si substrates were prepared by sol-gel technique and processed with different methods (baked on hot plate at 150 °C, annealed at 500 °C in furnace, and photo-annealed under UV light). The decomposition of the organic groups and the formation of Zr-O bonding in the ZrOx thin films were confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. It is found that the ZrOx thin film annealed under UV light shows decent characteristics, including an ultra-small surface roughness, a low leakage current density of 10(-9) A/cm2 at 1 MV/cm, a large breakdown electric field of 9.5 MV/cm, and a large areal capacitance of 775 nF/cm2.
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Yang L, Zhou HH, Ye YF, Fan XW, Wang YJ, Meng Y. Association of PS1 1/2, ACE I/D, and LRP C/T polymorphisms with Alzheimer's disease in the Chinese population: a meta-analysis of case-control studies. GENETICS AND MOLECULAR RESEARCH 2015; 14:1017-24. [PMID: 25730041 DOI: 10.4238/2015.february.6.5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The objective of this study was to assess the associations of presenilin 1 (PS1) 1/2, angiotensin I-converting enzyme (ACE) insertion/deletion (I/D), and low-density lipoprotein receptor-related protein (LRP) C/T polymorphisms with the risk of Alzheimer's disease (AD) in the Chinese population. PS1 1/2, ACE I/D, and LRP C/T, which are commonly investigated polymorphisms, were evaluated to obtain summary estimates regarding their associations with AD. In total, the data from 24 studies (2611 patients with AD and 2822 control subjects from 23 provinces and special districts in China) that were obtained from the Chinese Biomedicine Database, China National Knowledge Infrastructure, PubMed, and Medline were included. Different models (i.e., dominant, recessive, etc.) of these polymorphisms were analyzed using the Cochrane Review Manager. Statistically significant associations among patients with AD for the 1/1 genotype of the PS1 1/2 polymorphism [odds ratio (OR) = 1.77, 95% confidence interval (CI) = 1.03-3.04; P = 0.04] and the I/I genotype of the ACE I/D polymorphism (OR = 2.44, 95%CI = 1.78-3.35; P < 0.01) were identified. Statistically significant associations were also found for the PS1 1/2 polymorphism in both the dominant and recessive genetic models, whereas no association was found for the LRP C/T polymorphism. All studies exhibited heterogeneity (P < 0.05). This meta-analysis suggests that the 1/1 genotype of the PS1 1/2 polymorphism and the I/I genotype of the ACE I/D polymorphism are significantly associated with an increased risk of AD in the Chinese population.
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Guo X, Song J, Guan T, Wang S, Wang Y, Meng Y, Guo J, Li T, Ma C, Wei J. Characterization of recombinant human gastrointestinal glutathione peroxidase mutant produced inEscherichia coli. Free Radic Res 2015; 49:228-35. [DOI: 10.3109/10715762.2014.995182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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207
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Liu Y, Deng K, Wang S, Xiao M, Han D, Meng Y. A novel biodegradable polymeric surfactant synthesized from carbon dioxide, maleic anhydride and propylene epoxide. Polym Chem 2015. [DOI: 10.1039/c4py01801j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel biodegradable polymeric surfactants were synthesized by the sulfonation of gradient structured terpolymers of CO2, propylene epoxide and maleic anhydride.
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208
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Xu Y, Wang S, Lin L, Xiao M, Meng Y. Semi-crystalline terpolymers with varying chain sequence structures derived from CO2, cyclohexene oxide and ε-caprolactone: one-step synthesis catalyzed by tri-zinc complexes. Polym Chem 2015. [DOI: 10.1039/c4py01587h] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel semi-crystalline terpolymers with varying chain sequence structures derived from cyclohexene oxide (CHO), CO2 and ε-caprolactone (CL) were synthesized and reported.
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209
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Zhang B, Wang S, Xiao M, Han D, Song S, Chen G, Meng Y. A novel lithium–sulfur battery cathode from butadiene rubber-caged sulfur-rich polymeric composites. RSC Adv 2015. [DOI: 10.1039/c5ra06825h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel sulfur-rich polymeric materials were readily preparedviafacile solution vulcanization of the commercial butadiene rubber (BR) and sulfur element, and were investigated as cathode materials for lithium–sulfur batteries.
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Zhai L, Li G, Xu Y, Xiao M, Wang S, Meng Y. Poly(propylene carbonate)/aluminum flake composite films with enhanced gas barrier properties. J Appl Polym Sci 2014. [DOI: 10.1002/app.41663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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211
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An FP, Balantekin AB, Band HR, Beriguete W, Bishai M, Blyth S, Butorov I, Cao GF, Cao J, Chan YL, Chang JF, Chang LC, Chang Y, Chasman C, Chen H, Chen QY, Chen SM, Chen X, Chen X, Chen YX, Chen Y, Cheng YP, Cherwinka JJ, Chu MC, Cummings JP, de Arcos J, Deng ZY, Ding YY, Diwan MV, Draeger E, Du XF, Dwyer DA, Edwards WR, Ely SR, Fu JY, Ge LQ, Gill R, Gonchar M, Gong GH, Gong H, Grassi M, Gu WQ, Guan MY, Guo XH, Hackenburg RW, Han GH, Hans S, He M, Heeger KM, Heng YK, Hinrichs P, Hor YK, Hsiung YB, Hu BZ, Hu LM, Hu LJ, Hu T, Hu W, Huang EC, Huang H, Huang XT, Huber P, Hussain G, Isvan Z, Jaffe DE, Jaffke P, Jen KL, Jetter S, Ji XP, Ji XL, Jiang HJ, Jiao JB, Johnson RA, Kang L, Kettell SH, Kramer M, Kwan KK, Kwok MW, Kwok T, Lai WC, Lau K, Lebanowski L, Lee J, Lei RT, Leitner R, Leung A, Leung JKC, Lewis CA, Li DJ, Li F, Li GS, Li QJ, Li WD, Li XN, Li XQ, Li YF, Li ZB, Liang H, Lin CJ, Lin GL, Lin PY, Lin SK, Lin YC, Ling JJ, Link JM, Littenberg L, Littlejohn BR, Liu DW, Liu H, Liu JL, Liu JC, Liu SS, Liu YB, Lu C, Lu HQ, Luk KB, Ma QM, Ma XY, Ma XB, Ma YQ, McDonald KT, McFarlane MC, McKeown RD, Meng Y, Mitchell I, Monari Kebwaro J, Nakajima Y, Napolitano J, Naumov D, Naumova E, Nemchenok I, Ngai HY, Ning Z, Ochoa-Ricoux JP, Olshevski A, Patton S, Pec V, Peng JC, Piilonen LE, Pinsky L, Pun CSJ, Qi FZ, Qi M, Qian X, Raper N, Ren B, Ren J, Rosero R, Roskovec B, Ruan XC, Shao BB, Steiner H, Sun GX, Sun JL, Tam YH, Tang X, Themann H, Tsang KV, Tsang RHM, Tull CE, Tung YC, Viren B, Vorobel V, Wang CH, Wang LS, Wang LY, Wang M, Wang NY, Wang RG, Wang W, Wang WW, Wang X, Wang YF, Wang Z, Wang Z, Wang ZM, Webber DM, Wei HY, Wei YD, Wen LJ, Whisnant K, White CG, Whitehead L, Wise T, Wong HLH, Wong SCF, Worcester E, Wu Q, Xia DM, Xia JK, Xia X, Xing ZZ, Xu JY, Xu JL, Xu J, Xu Y, Xue T, Yan J, Yang CC, Yang L, Yang MS, Yang MT, Ye M, Yeh M, Yeh YS, Young BL, Yu GY, Yu JY, Yu ZY, Zang SL, Zeng B, Zhan L, Zhang C, Zhang FH, Zhang JW, Zhang QM, Zhang Q, Zhang SH, Zhang YC, Zhang YM, Zhang YH, Zhang YX, Zhang ZJ, Zhang ZY, Zhang ZP, Zhao J, Zhao QW, Zhao Y, Zhao YB, Zheng L, Zhong WL, Zhou L, Zhou ZY, Zhuang HL, Zou JH. Search for a light sterile neutrino at Daya Bay. PHYSICAL REVIEW LETTERS 2014; 113:141802. [PMID: 25325631 DOI: 10.1103/physrevlett.113.141802] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 06/04/2023]
Abstract
A search for light sterile neutrino mixing was performed with the first 217 days of data from the Daya Bay Reactor Antineutrino Experiment. The experiment's unique configuration of multiple baselines from six 2.9 GW(th) nuclear reactors to six antineutrino detectors deployed in two near (effective baselines 512 m and 561 m) and one far (1579 m) underground experimental halls makes it possible to test for oscillations to a fourth (sterile) neutrino in the 10(-3) eV(2)<|Δm(41)(2) |< 0.3 eV(2) range. The relative spectral distortion due to the disappearance of electron antineutrinos was found to be consistent with that of the three-flavor oscillation model. The derived limits on sin(2) 2θ(14) cover the 10(-3) eV(2) ≲ |Δm(41)(2)| ≲ 0.1 eV(2) region, which was largely unexplored.
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An F, Balantekin A, Band H, Beriguete W, Bishai M, Blyth S, Butorov I, Cao G, Cao J, Chan Y, Chang J, Chang L, Chang Y, Chasman C, Chen H, Chen Q, Chen S, Chen X, Chen X, Chen Y, Chen Y, Cheng Y, Cherwinka J, Chu M, Cummings J, de Arcos J, Deng Z, Ding Y, Diwan M, Draeger E, Du X, Dwyer D, Edwards W, Ely S, Fu J, Ge L, Gill R, Gonchar M, Gong G, Gong H, Gu W, Guan M, Guo X, Hackenburg R, Han G, Hans S, He M, Heeger K, Heng Y, Hinrichs P, Hor Y, Hsiung Y, Hu B, Hu L, Hu L, Hu T, Hu W, Huang E, Huang H, Huang X, Huber P, Hussain G, Isvan Z, Jaffe D, Jaffke P, Jen K, Jetter S, Ji X, Ji X, Jiang H, Jiao J, Johnson R, Kang L, Kettell S, Kramer M, Kwan K, Kwok M, Kwok T, Lai W, Lau K, Lebanowski L, Lee J, Lei R, Leitner R, Leung A, Leung J, Lewis C, Li D, Li F, Li G, Li Q, Li W, Li X, Li X, Li Y, Li Z, Liang H, Lin C, Lin G, Lin P, Lin S, Lin Y, Ling J, Link J, Littenberg L, Littlejohn B, Liu D, Liu H, Liu J, Liu J, Liu S, Liu Y, Lu C, Lu H, Luk K, Ma Q, Ma X, Ma X, Ma Y, McDonald K, McFarlane M, McKeown R, Meng Y, Mitchell I, Monari Kebwaro J, Nakajima Y, Napolitano J, Naumov D, Naumova E, Nemchenok I, Ngai H, Ning Z, Ochoa-Ricoux J, Olshevski A, Patton S, Pec V, Peng J, Piilonen L, Pinsky L, Pun C, Qi F, Qi M, Qian X, Raper N, Ren B, Ren J, Rosero R, Roskovec B, Ruan X, Shao B, Steiner H, Sun G, Sun J, Tam Y, Tang X, Themann H, Tsang K, Tsang R, Tull C, Tung Y, Viren B, Vorobel V, Wang C, Wang L, Wang L, Wang M, Wang N, Wang R, Wang W, Wang W, Wang X, Wang Y, Wang Z, Wang Z, Wang Z, Webber D, Wei H, Wei Y, Wen L, Whisnant K, White C, Whitehead L, Wise T, Wong H, Wong S, Worcester E, Wu Q, Xia D, Xia J, Xia X, Xing Z, Xu J, Xu J, Xu J, Xu Y, Xue T, Yan J, Yang C, Yang L, Yang M, Yang M, Ye M, Yeh M, Yeh Y, Young B, Yu G, Yu J, Yu Z, Zang S, Zeng B, Zhan L, Zhang C, Zhang F, Zhang J, Zhang Q, Zhang Q, Zhang S, Zhang Y, Zhang Y, Zhang Y, Zhang Y, Zhang Z, Zhang Z, Zhang Z, Zhao J, Zhao Q, Zhao Y, Zhao Y, Zheng L, Zhong W, Zhou L, Zhou Z, Zhuang H, Zou J. Independent measurement of the neutrino mixing angleθ13via neutron capture on hydrogen at Daya Bay. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.071101] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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213
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Li X, Liu Q, Yu Y, Meng Y. Synthesis and properties of multiblock ionomers containing densely functionalized hydrophilic blocks for anion exchange membranes. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.05.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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214
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Sun GQ, Wu GD, Meng Y, Du B, Li YB. IL-6 gene promoter polymorphisms and risk of coronary artery disease in a Chinese population. GENETICS AND MOLECULAR RESEARCH 2014; 13:7718-24. [PMID: 25299085 DOI: 10.4238/2014.september.26.9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the relationships between single nucleotide polymorphisms (SNPs) of the interleukin (IL)-6 gene 174 G>C (rs1800795), 572 G>C (rs1800796), and 597 G/A (rs1800797) and coronary artery disease (CAD) risk in a Chinese population. This case-control study recruited 296 CAD patients and 327 controls between January 2009 and May 2012. Genotyping of IL-6 174 G>C (rs1800795), 572 G>C (rs1800796), and 597 G/A (rs1800797) was performed on a 384-well plate format using the Sequenom MassARRAY platform. CAD patients were more likely to be older and male, with a higher body mass index, diabetes, and hypertension, and presented higher triglycerides, and lower total cholesterol, low-density lipoprotein-cholesterol, and high-density lipoprotein-cholesterol. We found that the IL-6 174CC genotype was associated with a significantly increased risk of CAD compared to the wild-type GG genotype in a codominant model [odds ratio (95% confidence interval) = 1.94 (1.13-3.37)], whereas IL-6 174 G>C polymorphisms presented an increased risk of CAD in dominant and recessive models. However, we did not find that the IL-6 572 CC and 597 AA genotypes were correlated with an increased risk of CAD. IL-6 174 G>C rs1800795 was associated with CAD risk in a Chinese population. Further large-scale studies are required to determine whether IL-6 SNPs interact with environmental factors in the development of CAD.
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Lv P, Meng Y, Li J, Lv M, Yu D, Shen Y, Dong S, Ding G, Huang H. Altered thyroid hormone level in offspring exposure to high estrogen level during the first trimester of pregnancy. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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216
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Zhang B, Xiao M, Wang S, Han D, Song S, Chen G, Meng Y. Novel hierarchically porous carbon materials obtained from natural biopolymer as host matrixes for lithium-sulfur battery applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13174-13182. [PMID: 25025228 DOI: 10.1021/am503069j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel hierarchically porous carbon materials with very high surface areas, large pore volumes and high electron conductivities were prepared from silk cocoon by carbonization with KOH activation. The prepared novel porous carbon-encapsulated sulfur composites were fabricated by a simple melting process and used as cathodes for lithium sulfur batteries. Because of the large surface area and hierarchically porous structure of the carbon material, soluble polysulfide intermediates can be trapped within the cathode and the volume expansion can be alleviated effectively. Moreover, the electron transport properties of the carbon materials can provide an electron conductive network and promote the utilization rate of sulfur in cathode. The prepared carbon-sulfur composite exhibited a high specific capacity and excellent cycle stability. The results show a high initial discharge capacity of 1443 mAh g(-1) and retain 804 mAh g(-1) after 80 discharge/charge cycles at a rate of 0.5 C. A Coulombic efficiency retained up to 92% after 80 cycles. The prepared hierarchically porous carbon materials were proven to be an effective host matrix for sulfur encapsulation to improve the sulfur utilization rate and restrain the dissolution of polysulfides into lithium-sulfur battery electrolytes.
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217
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Ou SQ, Gao J, Peng DL, Qi CY, Zhang JH, Meng Y, Lu BH. First Report of Aphelenchoides besseyi Causing White Tip Disease of Rice in Jilin Province, China. PLANT DISEASE 2014; 98:1165. [PMID: 30708826 DOI: 10.1094/pdis-01-14-0020-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
White tip disease of rice caused by the plant-parasitic nematode Aphelenchoides besseyi is an important domestic quarantine issue causing heavy yield losses of rice. During a survey for rice diseases in 2013, suspect white tip disease of rice was observed in the cities of Changchun and Gongzhuling, Jinlin Province, China. Leaf tips of susceptible rice varieties were white or yellow, becoming brown or black as necrosis set in. Tips of developing leaves were twisted and wrinkled. The flag leaf became twisted above the panicle until development was inhibited. General stunting of the plant accompanied leaf injury. Panicles were severely reduced and produced small deformed kernels while spikelets were reduced in number. Maturity of panicles was delayed, and secondary panicles arising from the lower nodes of the panicle were sterile. Nematodes were isolated from rice grains of diseased panicles. Key morphological features were determined for females and males. Measurements of females (n = 15) were: body length 612.50 to 735.00 μm (mean 673.75 μm), body width 17.37 to 22.21 μm (mean 19.79 μm), esophagus to gland 64.44 to 68.07 μm (mean 66.26 μm), and tail 34.41 to 41.29 μm (mean 37.85 μm). Females had a relatively short ovary with oocytes arranged in several lines; posterior uterine branch two to four times as long as body width; and tail tapering, conoid, with terminus bearing a mucro with four processes arranged in a shape somewhat that of a star. Measurements of males (n = 22) were: body length 483.39 to 580.00 μm (mean 531.70 μm), body width 14.46 to 17.12 μm (mean 15.79 μm), esophagus to gland 63.97 to 66.42 μm (mean 65.20 μm), and tail 30.38 to 36.45 μm (mean 33.41 μm). Males had a curved tail about 180° when relaxed, three pairs of ventrosubmedian papillae with the first one adanal, spicula curved with a slight basal process, and terminus bearing four mucrones arranged variably. Both males and females had lateral field occupying one fourth of the body width, marked by four incisures; delicate cephalic framework; small spear with moderate-size basal knobs; excretory pore was anterior to nerve ring; and intestine joined to esophagus immediately behind median bulb (3). All morphological data and characters were consistent with A. besseyi. Molecular diagnosis as A. besseyi was confirmed after DNA was extracted from nematodes (n = 16) and the templates were used in PCR analysis. The internal transcribed spacer region (ITS) of rDNA was amplified with primers TW81 and AB28 (2). The size of PCR product was 842 bp, and this sequence (KJ009342) was submitted to GenBank and was 98% similar with that of A. besseyi isolates from India (JF826519, JF93390, JF826517, JF826518) and Russia (EU186069). Molecular identification was further confirmed by amplifying part of the ITS region and part of the 5.8 gene of rDNA using the A. besseyi-specific primers BSF and BSR (1). The amplification yielded a 312-bp product specific to A. besseyi. Morphological and molecular data confirmed that the pathogen responsible for white tip disease in Changchun and Gongzhuling was A. besseyi. While this nematode has been reported from many rice-producing areas in China, this is the first detection of A. besseyi in Jilin Province, China. References: (1) R. Q. Cui et al. Plant Quarantine (Chinese) 24:10-12, 2010. (2) S. A. Subbotin et al. Nematology 2:153, 2000. (3) G. Thorne. Principles of Nematology. McGraw-Hill, New York, 1972.
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Meng Y, Dongmei L, Yanbin P, Jinju F, Meile T, Binzhu L, Xiao H, Ping T, Jianmin L. Systematic review and meta-analysis of ustekinumab for moderate to severe psoriasis. Clin Exp Dermatol 2014; 39:696-707. [PMID: 25039593 DOI: 10.1111/ced.12390] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2013] [Indexed: 11/29/2022]
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219
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Zhou Y, Huang R, Ding F, Brittain AD, Liu J, Zhang M, Xiao M, Meng Y, Sun L. Sulfonic acid-functionalized α-zirconium phosphate single-layer nanosheets as a strong solid acid for heterogeneous catalysis applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:7417-7425. [PMID: 24708469 DOI: 10.1021/am5008408] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Solid acids have received considerable attention as alternatives to traditional corrosive and hazardous homogeneous acids because of their advantages in practical applications, including their low corrosion of equipment and high catalytic activity and recyclability. In this work, a strong solid acid was prepared by anchoring thiol group terminated chains on layered α-zirconium phosphate (ZrP) single-layer nanosheets, followed by oxidation of thiol groups to form sulfonic acid groups. The obtained solid acids were thoroughly characterized and the results proved that sulfonic acid group terminated chains were successfully grafted onto the ZrP nanosheets with a high loading density. Such a strong solid acid based on inorganic nanosheets can be well-dispersed in polar solvents, leading to high accessibility to the acid functional groups. Meanwhile, it can be easily separated from the dispersion system by centrifugation or filtration. The strong solid acid can serve as an effective heterogeneous catalyst for various reactions, including the Bayer-Villiger oxidation of cyclohexanone to ε-caprolactone in the absence of organic solvents.
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Zhang L, Meng Y, Yang W, Wang L, Mao WL, Zeng QS, Jeong JS, Wagner AJ, Mkhoyan KA, Liu W, Xu R, Mao HK. Disproportionation of (Mg,Fe)SiO3 perovskite in Earth's deep lower mantle. Science 2014; 344:877-82. [DOI: 10.1126/science.1250274] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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An FP, Balantekin AB, Band HR, Beriguete W, Bishai M, Blyth S, Brown RL, Butorov I, Cao GF, Cao J, Carr R, Chan YL, Chang JF, Chang Y, Chasman C, Chen HS, Chen HY, Chen SJ, Chen SM, Chen XC, Chen XH, Chen Y, Chen YX, Cheng YP, Cherwinka JJ, Chu MC, Cummings JP, de Arcos J, Deng ZY, Ding YY, Diwan MV, Draeger E, Du XF, Dwyer DA, Edwards WR, Ely SR, Fu JY, Ge LQ, Gill R, Gonchar M, Gong GH, Gong H, Gornushkin YA, Gu WQ, Guan MY, Guo XH, Hackenburg RW, Hahn RL, Han GH, Hans S, He M, Heeger KM, Heng YK, Hinrichs P, Hor Y, Hsiung YB, Hu BZ, Hu LJ, Hu LM, Hu T, Hu W, Huang EC, Huang HX, Huang HZ, Huang XT, Huber P, Hussain G, Isvan Z, Jaffe DE, Jaffke P, Jetter S, Ji XL, Ji XP, Jiang HJ, Jiao JB, Johnson RA, Kang L, Kettell SH, Kramer M, Kwan KK, Kwok MW, Kwok T, Lai WC, Lai WH, Lau K, Lebanowski L, Lee J, Lei RT, Leitner R, Leung A, Leung JKC, Lewis CA, Li DJ, Li F, Li GS, Li QJ, Li WD, Li XN, Li XQ, Li YF, Li ZB, Liang H, Lin CJ, Lin GL, Lin SK, Lin YC, Ling JJ, Link JM, Littenberg L, Littlejohn BR, Liu DW, Liu H, Liu JC, Liu JL, Liu SS, Liu YB, Lu C, Lu HQ, Luk KB, Ma QM, Ma XB, Ma XY, Ma YQ, McDonald KT, McFarlane MC, McKeown RD, Meng Y, Mitchell I, Nakajima Y, Napolitano J, Naumov D, Naumova E, Nemchenok I, Ngai HY, Ngai WK, Ning Z, Ochoa-Ricoux JP, Olshevski A, Patton S, Pec V, Peng JC, Piilonen LE, Pinsky L, Pun CSJ, Qi FZ, Qi M, Qian X, Raper N, Ren B, Ren J, Rosero R, Roskovec B, Ruan XC, Shao BB, Steiner H, Sun GX, Sun JL, Tam YH, Tanaka HK, Tang X, Themann H, Trentalange S, Tsai O, Tsang KV, Tsang RHM, Tull CE, Tung YC, Viren B, Vorobel V, Wang CH, Wang LS, Wang LY, Wang LZ, Wang M, Wang NY, Wang RG, Wang W, Wang WW, Wang X, Wang YF, Wang Z, Wang Z, Wang ZM, Webber DM, Wei H, Wei YD, Wen LJ, Whisnant K, White CG, Whitehead L, Wise T, Wong HLH, Wong SCF, Worcester E, Wu Q, Xia DM, Xia JK, Xia X, Xing ZZ, Xu J, Xu JL, Xu JY, Xu Y, Xue T, Yan J, Yang CG, Yang L, Yang MS, Ye M, Yeh M, Yeh YS, Young BL, Yu GY, Yu JY, Yu ZY, Zang SL, Zhan L, Zhang C, Zhang FH, Zhang JW, Zhang QM, Zhang SH, Zhang YC, Zhang YH, Zhang YM, Zhang YX, Zhang ZJ, Zhang ZP, Zhang ZY, Zhao J, Zhao QW, Zhao YB, Zheng L, Zhong WL, Zhou L, Zhou ZY, Zhuang HL, Zou JH. Spectral measurement of electron antineutrino oscillation amplitude and frequency at Daya Bay. PHYSICAL REVIEW LETTERS 2014; 112:061801. [PMID: 24580686 DOI: 10.1103/physrevlett.112.061801] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Indexed: 06/03/2023]
Abstract
A measurement of the energy dependence of antineutrino disappearance at the Daya Bay reactor neutrino experiment is reported. Electron antineutrinos (ν¯(e)) from six 2.9 GW(th) reactors were detected with six detectors deployed in two near (effective baselines 512 and 561 m) and one far (1579 m) underground experimental halls. Using 217 days of data, 41 589 (203 809 and 92 912) antineutrino candidates were detected in the far hall (near halls). An improved measurement of the oscillation amplitude sin(2)2θ(13)=0.090(-0.009)(+0.008) and the first direct measurement of the ν¯(e) mass-squared difference |Δm(ee)2|=(2.59(-0.20)(+0.19))×10(-3) eV2 is obtained using the observed ν¯(e) rates and energy spectra in a three-neutrino framework. This value of |Δm(ee)2| is consistent with |Δm(μμ)2| measured by muon neutrino disappearance, supporting the three-flavor oscillation model.
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Meng Y, Zhao M, Yang M, Zhang Q, Hao J, Meng Y. Production and characterization of recombinant glucose oxidase from Aspergillus niger expressed in Pichia pastoris. Lett Appl Microbiol 2014; 58:393-400. [PMID: 24283586 DOI: 10.1111/lam.12202] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 11/22/2013] [Accepted: 11/24/2013] [Indexed: 11/28/2022]
Abstract
UNLABELLED Recombinant glucose oxidase from Aspergillus niger expressed in Pichia pastoris by fed-batch fermentation was purified and assessed with 1·26 purification fold to homogeneity using Q-Sepharose F.F. chromatography. The enzyme was determined by SDS-PAGE and gradient PAGE, which showed a dimeric form of 150 kDa. The purified rGOD was proved to be a glycoprotein, and the content of which was estimated to be 36·7 and 25·14% by phenol-sulfuric acid and anthrone-sulfuric acid methods. Characteristics demonstrated that the highest activity was in pH 6·0 at 40°C and was stable at a broad pH range from 4·0 to 9·0 at 55°C or below. The optimum substrate for this enzyme was d-glucose, and the Km was 21·06 mmol l(-1) as well as the Vmax was 359 μmol min(-1) mg(-1). rGOD possessed high resistance to various chemicals except for Hg(2+), Fe(2+), Ag(+), Cu(2+), 1,4-dithiothreitol, sodium dodecyl sulfate and ascorbic acid. In addition, the inhibitors also exhibited intensive fluorescence quenching effect on rGOD. SIGNIFICANCE AND IMPACT OF THE STUDY Glucose oxidase is a very important enzyme produced by several species. However, large-scale applications have always been postponed by its complexity in fermentation and purification. Our research focused on developing new purification strategy of recombinant GOD from A. niger expressed in P. pastoris. Here, we described this novel one-step purification method and subsequent research in the characteristics of rGOD which showed different results from previous work. These can open new opportunities to increase its application.
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Chen S, Sun B, Guo C, Hong W, Meng Y, Li Y. 3,3′-(Ethane-1,2-diylidene)bis(indolin-2-one) based conjugated polymers for organic thin film transistors. Chem Commun (Camb) 2014; 50:6509-12. [PMID: 24816911 DOI: 10.1039/c4cc02840f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
3,3′-(Ethane-1,2-diylidene)bis(indolin-2-one) (EBI) is used as a new electron acceptor for constructing polymer semiconductors for organic thin film transistors.
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Xu Y, Xiao M, Wang S, Pan M, Meng Y. Activities comparison of Schiff base zinc and tri-zinc complexes for alternating copolymerization of CO2 and epoxides. Polym Chem 2014. [DOI: 10.1039/c4py00008k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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225
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Liu Y, Xiao M, Wang S, Xia L, Hang D, Cui G, Meng Y. Mechanism studies of terpolymerization of phthalic anhydride, propylene epoxide, and carbon dioxide catalyzed by ZnGA. RSC Adv 2014. [DOI: 10.1039/c3ra46343e] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monomer reactivity ratios of CO2 and phthalic anhydride (PA) are evaluated and a mechanism is discussed for ZnGA catalyzed PA/CO2/PO terpolymerizations.
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Stevens JW, Simpson E, Harnan S, Squires H, Meng Y, Thomas S, Michaels J, Stansby G. Authors' reply: Systematic review of the efficacy of cilostazol, naftidrofuryl oxalate and pentoxifylline for the treatment of intermittent claudication ( Br J Surg 2012; 99: 1630–1638). Br J Surg 2013; 100:1838-9. [DOI: 10.1002/bjs.9358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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227
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Pan J, Wang S, Xiao M, Hickner M, Meng Y. Layered zirconium phosphate sulfophenylphosphonates reinforced sulfonated poly (fluorenyl ether ketone) hybrid membranes with high proton conductivity and low vanadium ion permeability. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.068] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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228
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Qian Y, Meng Y, Cui Y, Liu J. Peroxiredoxin 4 expression epigenetically down regulated in polycystic ovary syndrome. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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229
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Aprile E, Alfonsi M, Arisaka K, Arneodo F, Balan C, Baudis L, Bauermeister B, Behrens A, Beltrame P, Bokeloh K, Brown A, Brown E, Bruno G, Budnik R, Cardoso JMR, Chen WT, Choi B, Colijn AP, Contreras H, Cussonneau JP, Decowski MP, Duchovni E, Fattori S, Ferella AD, Fulgione W, Gao F, Garbini M, Ghag C, Giboni KL, Goetzke LW, Grignon C, Gross E, Hampel W, Kaether F, Kish A, Lamblin J, Landsman H, Lang RF, Le Calloch M, Lellouch D, Levy C, Lim KE, Lin Q, Lindemann S, Lindner M, Lopes JAM, Lung K, Marrodán Undagoitia T, Massoli FV, Melgarejo Fernandez AJ, Meng Y, Messina M, Molinario A, Ni K, Oberlack U, Orrigo SEA, Pantic E, Persiani R, Plante G, Priel N, Rizzo A, Rosendahl S, dos Santos JMF, Sartorelli G, Schreiner J, Schumann M, Scotto Lavina L, Scovell PR, Selvi M, Shagin P, Simgen H, Teymourian A, Thers D, Vitells O, Wang H, Weber M, Weinheimer C. Limits on spin-dependent WIMP-nucleon cross sections from 225 live days of XENON100 data. PHYSICAL REVIEW LETTERS 2013; 111:021301. [PMID: 23889382 DOI: 10.1103/physrevlett.111.021301] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 05/05/2013] [Indexed: 06/02/2023]
Abstract
We present new experimental constraints on the elastic, spin-dependent WIMP-nucleon cross section using recent data from the XENON100 experiment, operated in the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 224.6 live days×34 kg of exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with 129Xe and 131Xe nuclei. This leads to the most stringent upper limits on WIMP-neutron cross sections for WIMP masses above 6 GeV/c², with a minimum cross section of 3.5×10(-40) cm² at a WIMP mass of 45 GeV/c², at 90% confidence level.
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Feng L, Zhang D, Fan C, Ma C, Yang W, Meng Y, Wu W, Guan S, Jiang B, Yang M, Liu X, Guo D. ER stress-mediated apoptosis induced by celastrol in cancer cells and important role of glycogen synthase kinase-3β in the signal network. Cell Death Dis 2013; 4:e715. [PMID: 23846217 PMCID: PMC3730400 DOI: 10.1038/cddis.2013.222] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 05/03/2013] [Accepted: 05/06/2013] [Indexed: 01/13/2023]
Abstract
HeLa cells treated with celastrol, a natural compound with inhibitive effect on proteasome, exhibited increase in apoptotic rate and characteristics of apoptosis. To clarify the signal network activated by celastrol to induce apoptosis, both the direct target proteins and undirect target proteins of celastrol were searched in the present study. Proteasome catalytic subunit β1 was predicted by computational analysis to be a possible direct target of celastrol and confirmed by checking direct effect of celastrol on the activity of recombinant human proteasome subunit β1 in vitro. Undirect target-related proteins of celastrol were searched using proteomic studies including two-dimensional electrophoresis (2-DE) analysis and iTRAQ-based LC-MS analysis. Possible target-related proteins of celastrol such as endoplasmic reticulum protein 29 (ERP29) and mitochondrial import receptor Tom22 (TOM22) were found by 2-DE analysis of total cellular protein expression profiles. Further study showed that celastrol induced ER stress and ER stress inhibitor could ameliorate cell death induced by celastrol. Celastrol induced translocation of Bax into the mitochondria, which might be related to the upregulation of BH-3-only proteins such as BIM and the increase in the expression level of TOM22. To further search possible target-related proteins of celastrol in ER and ER-related fractions, iTRAQ-based LC-MS method was use to analyze protein expression profiles of ER/microsomal vesicles-riched fraction of cells with or without celastrol treatment. Based on possible target-related proteins found in both 2-DE analysis and iTRAQ-based LC-MS analysis, protein–protein interaction (PPI) network was established using bioinformatic analysis. The important role of glycogen synthase kinase-3β (GSK3β) in the signal cascades of celastrol was suggested. Pretreatment of LiCL, an inhibitor of GSK3β, could significantly ameliorate apoptosis induced by celastrol. On the basis of the results of the present study, possible signal network of celastrol activated by celastrol leading to apoptosis was predicted.
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Tang L, Xiao M, Xu Y, Wang S, Meng Y. Zinc adipate/tertiary amine catalytic system: efficient synthesis of high molecular weight poly(propylene carbonate). JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0190-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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232
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Huo HL, Yu SH, Liu XZ, Meng Y, Ren YP, Zhang LT. Simultaneous and sensitive determination of eight coumarins in rat bile and urine after oral administration ofRadix Angelicae Dahuricaeextract by liquid chromatography-electrospray ionization-mass spectrometry. ACTA CHROMATOGR 2013. [DOI: 10.1556/achrom.25.2013.2.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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233
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Zhang T, Sun L, Meng Y. A novel homozygous missense mutation in the factor VII gene of severe factor VII deficiency in a pedigree: a description of two cases. Haemophilia 2013; 19:e298-300. [PMID: 23672839 DOI: 10.1111/hae.12176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2013] [Indexed: 11/29/2022]
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234
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Luo J, Wu W, Xu LW, Meng Y, Lu Y. Enantioselective direct fluorination and chlorination of cyclic β-ketoesters mediated by phase-transfer catalysts. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.03.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wei B, Meng Y, Zhang F, Wu X, Willis P, Zhai R, Monsky W, Yang X. A new percutaneous pneumatic lithotripsy technique for common bile duct gallstones removal. J Vasc Interv Radiol 2013. [DOI: 10.1016/j.jvir.2013.01.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Cadien A, Hu QY, Meng Y, Cheng YQ, Chen MW, Shu JF, Mao HK, Sheng HW. First-order liquid-liquid phase transition in cerium. PHYSICAL REVIEW LETTERS 2013; 110:125503. [PMID: 25166820 DOI: 10.1103/physrevlett.110.125503] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Indexed: 06/03/2023]
Abstract
We report the first experimental observation of a liquid-liquid phase transition in the monatomic liquid metal cerium, by means of in situ high-pressure high-temperature x-ray diffraction experiments. At 13 GPa, upon increasing temperature from 1550 to 1900 K high-density liquid transforms to a low-density liquid, with a density difference of 14%. Theoretic models based on ab initio calculations are built to investigate the observed phase behavior of the liquids at various pressures. The results suggest that the transition primarily originates from the delocalization of f electrons and is deemed to be of the first order that terminates at a critical point.
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Li X, Yu Y, Meng Y. Novel quaternized poly(arylene ether sulfone)/Nano-ZrO₂ composite anion exchange membranes for alkaline fuel cells. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1414-1422. [PMID: 23384062 DOI: 10.1021/am302844x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A series of composite anion exchange membranes based on novel quaternized poly(arylene ether sulfone)/nanozirconia (QPAES/nano-ZrO₂) composites are prepared using a solution casting method. The QPAES/nano-ZrO₂ composite membranes are characterized by FTIR, X-ray diffraction (XRD), and scanning electron microscopy/energy-dispersive X-ray analysis (SEM/EDX). The ion exchange capacity (IEC), water uptake, swelling ratio, hydroxide ion conductivity, mechanical properties, thermal stability, and chemical stability of the composite membranes are measured to evaluate their applicability in fuel cells. The introduction of nano-ZrO₂ induces the crystallization of the matrix and enhances the IEC of the composite membranes. The modification with nano-ZrO₂ improves water uptake, dimension stability, hydroxide ion conductivity, mechanical properties, and thermal and chemical stabilities of the composite membranes. The QPAES/nano-ZrO₂ composite membranes show hydroxide ion conductivities over 25.7 mS cm⁻¹ at a temperature above 60 °C. Especially, the QPAES/nano-ZrO₂ composite membranes with the nano-ZrO₂ content above 7.5% display hydroxide ion conductivities over 41.4 mS cm⁻¹ at 80 °C. The E(a) values of the QPAES/nano-ZrO₂ composite membranes with the nano-ZrO₂ content above 5% are lower than 11.05 kJ mol⁻¹. The QPAES/7.5% nano-ZrO₂ composite membrane displays the lowest E(a) value and the best comprehensive properties and constitutes a good potential candidate for alkaline fuel cells.
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Mulani S, Xiao M, Wang S, Chen Y, Peng J, Meng Y. Structure properties of a highly luminescent yellow emitting material for OLED and its application. RSC Adv 2013. [DOI: 10.1039/c2ra21951d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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239
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Wang Y, Wang S, Xiao M, Han D, Hickner MA, Meng Y. Layer-by-layer self-assembly of PDDA/PSS-SPFEK composite membrane with low vanadium permeability for vanadium redox flow battery. RSC Adv 2013. [DOI: 10.1039/c3ra41670d] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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240
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Lee R, Zhong F, Zheng B, Meng Y, Lu Y, Huang KW. The origin of enantioselectivity in the l-threonine-derived phosphine–sulfonamide catalyzed aza-Morita–Baylis–Hillman reaction: effects of the intramolecular hydrogen bonding. Org Biomol Chem 2013; 11:4818-24. [DOI: 10.1039/c3ob40144h] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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241
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Xiao M, Huang M, Zeng S, Han D, Wang S, Sun L, Meng Y. Sulfur@graphene oxide core–shell particles as a rechargeable lithium–sulfur battery cathode material with high cycling stability and capacity. RSC Adv 2013. [DOI: 10.1039/c3ra00017f] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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242
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Meng Y, Zhang Y, Liang HW, Xiao HB, Xie CX. Genetic diversity of Chinese giant salamander (Andrias davidianus) based on the novel microsatellite markers. RUSS J GENET+ 2012. [DOI: 10.1134/s102279541212006x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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243
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Zhong F, Dou X, Han X, Yao W, Zhu Q, Meng Y, Lu Y. Chiral Phosphine Catalyzed Asymmetric Michael Addition of Oxindoles. Angew Chem Int Ed Engl 2012; 52:943-7. [DOI: 10.1002/anie.201208285] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Indexed: 11/07/2022]
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244
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Zhong F, Dou X, Han X, Yao W, Zhu Q, Meng Y, Lu Y. Chiral Phosphine Catalyzed Asymmetric Michael Addition of Oxindoles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201208285] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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245
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Aprile E, Alfonsi M, Arisaka K, Arneodo F, Balan C, Baudis L, Bauermeister B, Behrens A, Beltrame P, Bokeloh K, Brown E, Bruno G, Budnik R, Cardoso JMR, Chen WT, Choi B, Cline D, Colijn AP, Contreras H, Cussonneau JP, Decowski MP, Duchovni E, Fattori S, Ferella AD, Fulgione W, Gao F, Garbini M, Ghag C, Giboni KL, Goetzke LW, Grignon C, Gross E, Hampel W, Kaether F, Kish A, Lamblin J, Landsman H, Lang RF, Le Calloch M, Levy C, Lim KE, Lin Q, Lindemann S, Lindner M, Lopes JAM, Lung K, Marrodán Undagoitia T, Massoli FV, Melgarejo Fernandez AJ, Meng Y, Molinario A, Nativ E, Ni K, Oberlack U, Orrigo SEA, Pantic E, Persiani R, Plante G, Priel N, Rizzo A, Rosendahl S, dos Santos JMF, Sartorelli G, Schreiner J, Schumann M, Scotto Lavina L, Scovell PR, Selvi M, Shagin P, Simgen H, Teymourian A, Thers D, Vitells O, Wang H, Weber M, Weinheimer C. Dark matter results from 225 live days of XENON100 data. PHYSICAL REVIEW LETTERS 2012; 109:181301. [PMID: 23215267 DOI: 10.1103/physrevlett.109.181301] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Indexed: 06/01/2023]
Abstract
We report on a search for particle dark matter with the XENON100 experiment, operated at the Laboratori Nazionali del Gran Sasso for 13 months during 2011 and 2012. XENON100 features an ultralow electromagnetic background of (5.3 ± 0.6) × 10(-3) events/(keV(ee) × kg × day) in the energy region of interest. A blind analysis of 224.6 live days × 34 kg exposure has yielded no evidence for dark matter interactions. The two candidate events observed in the predefined nuclear recoil energy range of 6.6-30.5 keV(nr) are consistent with the background expectation of (1.0 ± 0.2) events. A profile likelihood analysis using a 6.6-43.3 keV(nr) energy range sets the most stringent limit on the spin-independent elastic weakly interacting massive particle-nucleon scattering cross section for weakly interacting massive particle masses above 8 GeV/c(2), with a minimum of 2 × 10(-45) cm(2) at 55 GeV/c(2) and 90% confidence level.
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Stevens JW, Simpson E, Harnan S, Squires H, Meng Y, Thomas S, Michaels J, Stansby G. Systematic review of the efficacy of cilostazol, naftidrofuryl oxalate and pentoxifylline for the treatment of intermittent claudication. Br J Surg 2012; 99:1630-8. [PMID: 23034699 DOI: 10.1002/bjs.8895] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2012] [Indexed: 11/06/2022]
Abstract
BACKGROUND A systematic review and network meta-analysis was undertaken to consider the evidence for the efficacy and tolerability of placebo, cilostazol, naftidrofuryl oxalate and pentoxifylline in patients with intermittent claudication due to peripheral arterial disease (PAD). METHODS MEDLINE, Embase, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, Web of Science, Conference Proceedings, BIOSIS, National Research Register and MetaRegister databases were searched. Eligible studies were randomized controlled trials (RCTs) and published systematic reviews of patients with intermittent claudication due to PAD and whose symptoms persisted despite a period of conservative management. Study selection was conducted by one reviewer with involvement from a clinician. Data were extracted by one reviewer with no blinding to authors or journal, and checked by a second reviewer. Outcome measures were maximum walking distance (MWD) and pain-free walking distance (PFWD). RESULTS The review identified 1876 citations; 26 RCTs met the inclusion criteria for the systematic review. Eleven trials provided data relevant for the meta-analysis. Naftidrofuryl oxalate was ranked first for both MWD and PFWD (probability of 0·947 and 0·987, respectively, of being the best treatment) followed by cilostazol and pentoxifylline. For naftidrofuryl oxalate, cilostazol and pentoxifylline, MWD increased by 60 (95 per cent credible interval 20 to 114) per cent, 25 (11 to 40) per cent and 11 (-1 to 24) per cent respectively relative to placebo, and PFWD increased by 49, 13 and 9 per cent. CONCLUSION Naftidrofuryl oxalate and cilostazol are both effective treatments for claudication; naftidrofuryl oxalate is likely to be the most effective, with minimal serious adverse events.
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Chen D, Hickner MA, Wang S, Pan J, Xiao M, Meng Y. Directly fluorinated polyaromatic composite membranes for vanadium redox flow batteries. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.04.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Meng Y, Weidner DJ, Gwanmesia GD, Liebermann RC, Vaughan MT, Wang Y, Leinenweber K, Pacalo RE, Yeganeh-Haeri A, Zhao Y. In situ high P-T X ray diffraction studies on three polymorphs (α, β, γ) of Mg2SiO4. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/93jb02383] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tan Y, Xiong Y, Ding GL, Meng Y, Huang HF, Sheng JZ. Permeability of oocytes to cryoprotectants depending on upregulation of AQP7 expression by hypertonic cryoprotectants during cryoproservation. Fertil Steril 2012. [DOI: 10.1016/j.fertnstert.2012.07.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dorfman SM, Prakapenka VB, Meng Y, Duffy TS. Intercomparison of pressure standards (Au, Pt, Mo, MgO, NaCl and Ne) to 2.5 Mbar. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jb009292] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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