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Träfflista för sökning "WFRF:(Zheng Jie) srt2:(2010-2014)"

Sökning: WFRF:(Zheng Jie) > (2010-2014)

  • Resultat 1-8 av 8
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1.
  • Liang, Jie, et al. (författare)
  • CHA-type zeolites with high boron content : Synthesis, structure and selective adsorption properties
  • 2014
  • Ingår i: Microporous and Mesoporous Materials. - 1387-1811. ; 194, s. 97-105
  • Tidskriftsartikel (refereegranskat)abstract
    • Borosilicate zeolites with CHA-type framework are synthesized hydrothermally by using N,N,N-trimethylcyclohexylammonium hydroxide as structure directing agent. The use of this cation induces an increase of boron content in the CHA-type zeolites, and the Si/B ratios of the as-synthesized samples is in the range of 11.8-6.9. Rietveld refinements of the calcinated samples reveal a contraction of unit cells with the increase of boron content, and the 8-ring opening window of cha cavity becomes narrower. B-11 MAS NMR shows that all the boron atoms are incorporated into the framework as tetrahedral BO4 units in the as-synthesized samples. The thermal stability of these CHA-type borosilicates decreases with the increase of boron content, and the framework can retain up to 800 degrees C. These borosilicates, with the BET surfaces of 583-632 m(2)/g, show a high adsorption capacity for H-2 at 77 K, 900 mmHg and a preferential adsorption for CO2 at 273 K. This selective adsorption property enables CHA-type borosilicates to be potential materials as CO2 adsorbent.
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2.
  • Zhang, Guojie, et al. (författare)
  • Comparative genomics reveals insights into avian genome evolution and adaptation
  • 2014
  • Ingår i: Science. - 0036-8075 .- 1095-9203. ; 346:6215, s. 1311-1320
  • Tidskriftsartikel (refereegranskat)abstract
    • Birds are the most species-rich class of tetrapod vertebrates and have wide relevance across many research fields. We explored bird macroevolution using full genomes from 48 avian species representing all major extant clades. The avian genome is principally characterized by its constrained size, which predominantly arose because of lineage-specific erosion of repetitive elements, large segmental deletions, and gene loss. Avian genomes furthermore show a remarkably high degree of evolutionary stasis at the levels of nucleotide sequence, gene synteny, and chromosomal structure. Despite this pattern of conservation, we detected many non-neutral evolutionary changes in protein-coding genes and noncoding regions. These analyses reveal that pan-avian genomic diversity covaries with adaptations to different lifestyles and convergent evolution of traits.
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3.
  • Gao, Jie, et al. (författare)
  • Interactive Packaging Solutions Based on RFIDTechnology and Controlled Delamination Material
  • 2010
  • Konferensbidrag (refereegranskat)abstract
    • Interactive packaging is an emerging research area in recent years. It brings people convenient and smart lives, reduces consumption of traditional packaging materials and direct or indirect labor costs as well. Being integrated in interactive packaging, Radio Frequency Identification (RFID) technology becomes one of the most proactive development enablers. In this paper, an interactive and intelligent packaging solution integrating passive RFID system and Controlled Delamination Material (CDM) is given at first. Package opening action is electrically controlled by the RFID system. CDM is primarily used in aerospace applications in the past and the conductor/adhesive joint can be easily opened by applying a little electric power on to the material. Some related works will be shown about the electrochemical characteristics of CDM in order to facilitate the system design. A demonstration system was developed and the test results have proved feasibility of the solution and shown the potential of low cost for mass production. Based on this solution, an interactive medication package for pervasive healthcare is further developed, using EPCglobal Gen2 RFID technology. It will make the medication being accessible for patient only at the prescribed dose and time, and medication taking information will be delivered as well. Such medication package will not only give unprecedented high patient compliance, but also improve the communication between patients and healthcare staffs.
4.
  • Hu, Liangbing, et al. (författare)
  • Transparent and conductive paper from nanocellulose fibers
  • 2013
  • Ingår i: Energy & Environmental Science. - 1754-5692. ; 6:2, s. 513-518
  • Tidskriftsartikel (refereegranskat)abstract
    • Here we report on a novel substrate, nanopaper, made of cellulose nanofibrils, an earth abundant material. Compared with regular paper substrates, nanopaper shows superior optical properties. We have carried out the first study on the optical properties of nanopaper substrates. Since the size of the nanofibrils is much less than the wavelength of visible light, nanopaper is highly transparent with large light scattering in the forward direction. Successful depositions of transparent and conductive materials including tin-doped indium oxide, carbon nanotubes and silver nanowires have been achieved on nanopaper substrates, opening up a wide range of applications in optoelectronics such as displays, touch screens and interactive paper. We have also successfully demonstrated an organic solar cell on the novel substrate.
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5.
  • Wang, Zhaoming, et al. (författare)
  • Imputation and subset-based association analysis across different cancer types identifies multiple independent risk loci in the TERT-CLPTM1L region on chromosome 5p15.33
  • 2014
  • Ingår i: Human Molecular Genetics. - 0964-6906. ; 23:24, s. 6616-6633
  • Tidskriftsartikel (refereegranskat)abstract
    • Genome-wide association studies (GWAS) have mapped risk alleles for at least 10 distinct cancers to a small region of 63 000 bp on chromosome 5p15.33. This region harbors the TERT and CLPTM1L genes; the former encodes the catalytic subunit of telomerase reverse transcriptase and the latter may play a role in apoptosis. To investigate further the genetic architecture of common susceptibility alleles in this region, we conducted an agnostic subset-based meta-analysis (association analysis based on subsets) across six distinct cancers in 34 248 cases and 45 036 controls. Based on sequential conditional analysis, we identified as many as six independent risk loci marked by common single-nucleotide polymorphisms: five in the TERT gene (Region 1: rs7726159, P = 2.10 × 10(-39); Region 3: rs2853677, P = 3.30 × 10(-36) and PConditional = 2.36 × 10(-8); Region 4: rs2736098, P = 3.87 × 10(-12) and PConditional = 5.19 × 10(-6), Region 5: rs13172201, P = 0.041 and PConditional = 2.04 × 10(-6); and Region 6: rs10069690, P = 7.49 × 10(-15) and PConditional = 5.35 × 10(-7)) and one in the neighboring CLPTM1L gene (Region 2: rs451360; P = 1.90 × 10(-18) and PConditional = 7.06 × 10(-16)). Between three and five cancers mapped to each independent locus with both risk-enhancing and protective effects. Allele-specific effects on DNA methylation were seen for a subset of risk loci, indicating that methylation and subsequent effects on gene expression may contribute to the biology of risk variants on 5p15.33. Our results provide strong support for extensive pleiotropy across this region of 5p15.33, to an extent not previously observed in other cancer susceptibility loci.
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6.
  • Xu, K., et al. (författare)
  • GaN nanorod light emitting diodes with suspended graphene transparent electrodes grown by rapid chemical vapor deposition
  • 2013
  • Ingår i: Applied Physics Letters. - 0003-6951. ; 103:22, s. 5
  • Tidskriftsartikel (refereegranskat)abstract
    • Ordered and dense GaN light emitting nanorods are studied with polycrystalline graphene grown by rapid chemical vapor deposition as suspended transparent electrodes. As the substitute of indium tin oxide, the graphene avoids complex processing to fill up the gaps between nanorods and subsequent surface flattening and offers high conductivity to improve the carrier injection. The as-fabricated devices have 32% improvement in light output power compared to conventional planar GaN-graphene diodes. The suspended graphene remains electrically stable up to 300 degrees C in air. The graphene can be obtained at low cost and high efficiency, indicating its high potential in future applications.
7.
  • Xu, K., et al. (författare)
  • Graphene transparent electrodes grown by rapid chemical vapor deposition with ultrathin indium tin oxide contact layers for GaN light emitting diodes
  • 2013
  • Ingår i: Applied Physics Letters. - 0003-6951. ; 102:16
  • Tidskriftsartikel (refereegranskat)abstract
    • By virtue of the small active volume around Cu catalyst, graphene is synthesized by fast chemical vapor deposition (CVD) in a cold wall vertical system. Despite being highly polycrystalline, it is as conductive and transparent as standard graphene and can be used in light emitting diodes as transparent electrodes. 7-10 nm indium tin oxide (ITO) contact layer is inserted between the graphene and p-GaN to enhance hole injection. Devices with forward voltage and transparency comparable to those using traditional 240 nm ITO are achieved with better ultraviolet performances, hinting the promising future for application-oriented graphene by rapid CVD.
8.
  • Zhao, Yilin, et al. (författare)
  • Radicicol, an Hsp90 inhibitor, inhibits intestinal inflammation and leakage in abdominal sepsis.
  • 2013
  • Ingår i: Journal of Surgical Research. - Elsevier. - 1095-8673. ; 182:2, s. 312-318
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Intestinal injury is a key feature in sepsis. Inhibitors of heat shock protein 90 (Hsp90) have been shown to exert protective effects in models of inflammation. Herein, we hypothesized that Hsp90 might regulate intestinal inflammation and leakage in abdominal sepsis. MATERIALS AND METHODS: Male C57BL/6 mice were pretreated with radicicol (60 mg/kg), which is a specific inhibitor of Hsp90, prior to cecal ligation and puncture (CLP). Intravital fluorescence microscopy was used to quantify leukocyte-endothelium interactions in the colonic microcirculation 6 h after CLP. Colonic tissue was harvested to determine levels of myeloperoxidase, tumor necrosis factor-α and CXC chemokines. Intestinal injury was examined by histology. Intestinal barrier function was quantified by leakage of fluorescein isothiocyanate-dextran from the vascular system out into the abdominal cavity after intravenous injection. RESULTS: We found that radicicol significantly decreased CLP-induced leukocyte rolling and adhesion in colonic venules. Inhibition of Hsp90 reduced colonic levels of myeloperoxidase by 24% in septic animals. Moreover, radicicol significantly decreased CLP-provoked formation of CXC chemokines but had no significant effect on tumor necrosis factor-α levels in the colon. Notably, Hsp90 inhibition significantly attenuated intestinal tissue injury evoked by CLP. Lastly, it was found that radicicol reduced sepsis-induced intestinal leakage by 43%. CONCLUSION: Our novel findings suggest that targeting Hsp90 protects against intestinal inflammation and leakage and might be a useful strategy to ameliorate intestinal failure in polymicrobial sepsis.
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