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  • World Scientific Pub Co Pte Ltd  (93)
  • 2005-2009  (93)
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  • World Scientific Pub Co Pte Ltd  (93)
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  • 2005-2009  (93)
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  • 1
    Online Resource
    Online Resource
    RECENT RESULTS FROM BESII J/ψ DECAYS
    World Scientific Pub Co Pte Ltd ; 2009
    In:  International Journal of Modern Physics A Vol. 24, No. 02n03 ( 2009-01-30), p. 428-433
    Details
    In: International Journal of Modern Physics A, World Scientific Pub Co Pte Ltd, Vol. 24, No. 02n03 ( 2009-01-30), p. 428-433
    Abstract: In this representation, some recent results from BESII J/ψ decays have been represented, including the analysis of [Formula: see text] which is helpful to understand the threshold enhancement structure founded in [Formula: see text] is from pure final states interference(FSI) or not and the analysis of [Formula: see text] the enhancement based on it some discussion will be hold if the structure is same one as the baryon excited states N* found in [Formula: see text] .
    Type of Medium: Online Resource
    ISSN: 0217-751X , 1793-656X
    URL: Article
    DOI: 10.1142/S0217751X09043778
    RVK:
    UA 4381
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2009
    SSG: 16,12
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  • 2
    Online Resource
    Online Resource
    PYRAMIDALITY AND AROMATICITY IN POLYPHOSPHAPHOSPHOLES
    World Scientific Pub Co Pte Ltd ; 2008
    In:  Journal of Theoretical and Computational Chemistry Vol. 07, No. 06 ( 2008-12), p. 1203-1214
    Details
    In: Journal of Theoretical and Computational Chemistry, World Scientific Pub Co Pte Ltd, Vol. 07, No. 06 ( 2008-12), p. 1203-1214
    Abstract: Ab initio calculations show that, for the P n ( CH ) 4-n PH with n = 0 - 4, the fully optimized structures have decreasing pyramidality at the tri-coordinated phosphorus atom with n. The interaction between the tri-coordinated phosphorus [Formula: see text] and the carbons–phosphorus π-system [Formula: see text] with different n, the differences of the structure, electron properties and energy among the phospholes indicate that the ring strain and the delocalization of the lone pair electron of tri-coordinated phosphorus should be responsible for this phenomena. Various aromatic criteria such as geometry, magnetism, and energy show that these molecules are aromatic, and their aromaticities increase with the number of phosphorus atoms in the nonplanar pentagons. The electron circulation in the aromatic molecules can promote the delocalization of the lone pair. In contrast to the B3LYP prediction, we draw some similar conclusions, but the planarity and aromaticity of molecules increase largely at the MP2 lever due to the consideration of electron correlation.
    Type of Medium: Online Resource
    ISSN: 0219-6336 , 1793-6888
    URL: Article
    DOI: 10.1142/S0219633608004386
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2008
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  • 3
    Online Resource
    Online Resource
    EFFECT OF SUBSTITUTION ON THE STRUCTURES AND OPTOELECTRONIC PROPERTIES OF MERCURY-CONTAINING DIETHYNYLFLUORENE
    World Scientific Pub Co Pte Ltd ; 2006
    In:  Journal of Theoretical and Computational Chemistry Vol. 05, No. spec01 ( 2006-01), p. 401-409
    Details
    In: Journal of Theoretical and Computational Chemistry, World Scientific Pub Co Pte Ltd, Vol. 05, No. spec01 ( 2006-01), p. 401-409
    Abstract: We report on a quantum-chemical study of the electronic and optical properties of Mercury(II) complexes HgTFT (1) and its electron-withdrawing substitutent HgTFOT (2), HgTFCNT (3) [where TFT = diethynylfluorenyl, TFOT = diethynylfluorenone and TFCNT = diethynyl-(9-(dicyanomethylene)fluorene)]. Our theoretical calculations indicate that the substitution of - CO , - C ( CN ) 2 for - CH in HgTFT significantly decreases the bond length alternation and increases the electron affinity, which would qualify HgTFOT 2 and HgTFCNT 3, especially 3, as candidates for n-type electrical conductors. The vertical transition energy associated with the low-lying excited state has been examined within the time-dependent DFT formalism for mercury diethynylfluorenyl derivatives. It is found that the electron-withdrawing substitutions lead to remarkable red shift in transition energy and alter the corresponding charge transfer manner.
    Type of Medium: Online Resource
    ISSN: 0219-6336 , 1793-6888
    URL: Article
    DOI: 10.1142/S0219633606002349
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2006
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  • 4
    Online Resource
    Online Resource
    INFLUENCE OF GAUGE BOSON MASS ON FERMION CHIRAL CONDENSATE IN QED 3
    World Scientific Pub Co Pte Ltd ; 2009
    In:  International Journal of Modern Physics A Vol. 24, No. 20n21 ( 2009-08-20), p. 3969-3974
    Details
    In: International Journal of Modern Physics A, World Scientific Pub Co Pte Ltd, Vol. 24, No. 20n21 ( 2009-08-20), p. 3969-3974
    Abstract: For the number of fermion flavors N = 2, we numerically solve the coupled Dyson–Schwinger equation for the fermion and gauge boson propagators of QED 3 using the fermion–gauge-boson vertex ansatz [Formula: see text] for a range of finite gauge boson mass ζ and chemical potential μ. For small chemical potential μ it is found that chiral symmetry gets restored when ζ is larger than a critical mass ζ c and the value of ζ c is not sensitive to the variation of chemical potential.
    Type of Medium: Online Resource
    ISSN: 0217-751X , 1793-656X
    URL: Article
    DOI: 10.1142/S0217751X09044796
    RVK:
    UA 4381
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2009
    SSG: 16,12
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  • 5
    Online Resource
    Online Resource
    OMNIDIRECTIONAL FILTERING BASED ON ZERO-AVERAGED REFRACTIVE INDEX GAP IN PHOTONIC QUANTUM WELL STRUCTURES
    World Scientific Pub Co Pte Ltd ; 2009
    In:  Modern Physics Letters B Vol. 23, No. 25 ( 2009-10-10), p. 2943-2953
    Details
    In: Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 23, No. 25 ( 2009-10-10), p. 2943-2953
    Abstract: A photonic quantum well (PQW) structure based on the zero-averaged refractive index gap is constructed and the transmission properties are investigated. Quantized confined photonic states resulting from the photonic confinement effect are observed. We find that the resonant transmissions are not only weakly dependent on the incident angle but also insensitive to polarization of light. More importantly, the number of the confined photonic states can be controlled by simply adjusting the cell number of the well photonic crystal. It is shown that strong field localization is found when the well photonic crystal consists of positive-index material or single negative material. Particularly for the PQW structure containing single negative material, the field in the well region can be highly enhanced by modulating the size of the well photonic crystal. These peculiar features make this PQW structure superior to the conventional PQW structure in potential applications such as omnidirectional filtering and optical bistable switching.
    Type of Medium: Online Resource
    ISSN: 0217-9849 , 1793-6640
    URL: Article
    DOI: 10.1142/S021798490902103X
    RVK:
    UA 5534.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2009
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  • 6
    Online Resource
    Online Resource
    HEAT CAPACITY RELEVANT TO QGP PHASE TRANSITION AT $\sqrt{^SNN} = 200\ {\rm GeV}$
    World Scientific Pub Co Pte Ltd ; 2007
    In:  International Journal of Modern Physics E Vol. 16, No. 07n08 ( 2007-08), p. 1906-1911
    Details
    In: International Journal of Modern Physics E, World Scientific Pub Co Pte Ltd, Vol. 16, No. 07n08 ( 2007-08), p. 1906-1911
    Abstract: A parton and hadron cascade model, PACIAE, is applied to follow the particle transport in both the partonic and hadronic stages of the 0–5% most central Au + Au collisions at [Formula: see text]. We have determined the specific heat of π + + π − in pure hadronic scenario (hadonic final state) and the specific heat of [Formula: see text] in pure partonic scenario (partonic initial state). The specific heat of π + + π − in hadronic scenario is nearly a factor of 1.2 smaller than that of [Formula: see text] in partonic scenario. However, the specific heat of [Formula: see text] is very hard to survive the hadronization.
    Type of Medium: Online Resource
    ISSN: 0218-3013 , 1793-6608
    URL: Article
    DOI: 10.1142/S0218301307007210
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2007
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  • 7
    Online Resource
    Online Resource
    MG63 OSTEOBLAST-LIKE CELLS RESPONSE OF SiC COATING FOR CARBON/CARBON COMPOSITES
    World Scientific Pub Co Pte Ltd ; 2009
    In:  Surface Review and Letters Vol. 16, No. 05 ( 2009-10), p. 683-687
    Details
    In: Surface Review and Letters, World Scientific Pub Co Pte Ltd, Vol. 16, No. 05 ( 2009-10), p. 683-687
    Abstract: A SiC coating for carbon/carbon ( C/C ) composites was produced by pack cementation to use as a bonding and buffer layer between C/C composites and bioactive ceramic for application in orthopaedic implants. The microstructure and MG63 osteoblast-like cell responses of the coating were investigated. The results confirmed that the SiC coating displayed a dense and uniform microstructure. MG63 cells attached and spread favorably on SiC coating, and cell proliferation was better on SiC coating than on uncoated C/C composites surface. The SiC coated C/C composites have the potential to be used in artificial implants.
    Type of Medium: Online Resource
    ISSN: 0218-625X , 1793-6667
    URL: Article
    DOI: 10.1142/S0218625X09013165
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2009
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  • 8
    Online Resource
    Online Resource
    Effects of 3-Phenyl-Propenal on the Expression of Toll-Like Receptors and Downstream Signaling Components on Raw264.7 Murine Macrophages
    World Scientific Pub Co Pte Ltd ; 2008
    In:  The American Journal of Chinese Medicine Vol. 36, No. 01 ( 2008-01), p. 159-169
    Details
    In: The American Journal of Chinese Medicine, World Scientific Pub Co Pte Ltd, Vol. 36, No. 01 ( 2008-01), p. 159-169
    Abstract: 3-phenyl-propenal is one of the principle compounds isolated from Guizhi (Ramulus Cinnamomi), the principal drug in Guizhi-Tang (GZT), a famous traditional Chinese medical formula. The aim of the present study was to investigate the effects of 3-phenyl-propenal on the expression of toll-like receptor 3 (TLR3), TLR4 and the downstream signaling components on Raw264.7 murine microphages. Raw264.7 cells were cultured in RPMI-1640 medium containing LPS (lipopolysaccharide) or poly (I:C) in the presence or absence of 3-phenyl-propenal. After 24-hour incubation, the medium was collected and the amount of TNF-α and IFN-β was measured by ELISA. mRNA expression of TLR3, TLR4, myeloid differentiation factor (MyD88), TRAF-6 (tumor necrosis factor receptor-associated), TRAM (toll-like receptor-associated molecule) and TRIF (TIR domain-containing adaptor inducing IFN-β) were analyzed by real-time PCR with SYBR green dye. Protein expression of TLR3 and TLR4 was analyzed by Western blotting and that of MyD88 and TRAF-6 was analyzed by immunofluorescence assay. The results indicate that LPS increased the expression of TLR4, MyD88, TRAF-6, TRAM and TRIF, but had no influence on TLR3, while poly (I:C) up-regulated the expression of TLR3, MyD88, TRAM and TRIF. 3-phenyl-propenal significantly decreased the expression of LPS-induced TLR4, MyD88, TRAF-6, while possessing no effect on LPS-induced TRAM and TRIF expression in Raw264.7 cells. When cells were stimulated by poly (I:C), 3-phenyl-propenal significantly decreased TLR3 and MyD88 expression. In conclusion, 3-phenyl-propenal blocked the over-expression of TLR3, TLR4, their downstream signaling components MyD88 and TRAF-6, which indicate that it had an antagonistic effect on TLR3 and TLR4.
    Type of Medium: Online Resource
    ISSN: 0192-415X , 1793-6853
    URL: Article
    DOI: 10.1142/S0192415X08005679
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2008
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  • 9
    Online Resource
    Online Resource
    A THEORETICAL STUDY ON DUAL FLUORESCENCE OF 4-DIMETHYLAMINOPYRIDINE BY POLARIZABLE CONTINUUM MODEL
    World Scientific Pub Co Pte Ltd ; 2008
    In:  Journal of Theoretical and Computational Chemistry Vol. 07, No. 04 ( 2008-08), p. 821-832
    Details
    In: Journal of Theoretical and Computational Chemistry, World Scientific Pub Co Pte Ltd, Vol. 07, No. 04 ( 2008-08), p. 821-832
    Abstract: Dual fluorescence spectra of 4-dimethylaminopyridine (DMAP) is investigated using time-dependent density functional theory and complete active space self-consistent field methods. Electronic absorption and emission spectra of DMAP have been investigated in three solvents, that is, cyclohexane, chloroform, and acetonitrile. The present study reveals that the dual fluorescence phenomena of DMAP appear in the cases of acetonitrile and chloroform, but not in cyclohexane. The electronic structures of the ground state and the intramolecular charge transfer states are, therefore, studied in order to reveal the insight of dual fluorescence. Our theoretical results suggest that the twisting of dimethylamino moiety in DMAP is necessary for the intramolecular charge transfer. The mechanism of the dual fluorescence of DMAP is discussed based on the twisted intramolecular charge transfer model and the dual fluorescence phenomenon is explained theoretically.
    Type of Medium: Online Resource
    ISSN: 0219-6336 , 1793-6888
    URL: Article
    DOI: 10.1142/S0219633608004143
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2008
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  • 10
    Online Resource
    Online Resource
    ENHANCED NEAR-INFRARED FLUORESCENCE FROM DYE-DOPED CORE-SHELL Ag/SiO 2 NANOWIRES
    World Scientific Pub Co Pte Ltd ; 2009
    In:  Modern Physics Letters B Vol. 23, No. 05 ( 2009-02-20), p. 709-714
    Details
    In: Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 23, No. 05 ( 2009-02-20), p. 709-714
    Abstract: We have studied the increase of the radiative decay rate of heptamethine cyanine NIR laser dye within core-shell Ag/SiO 2 nanowires. The photoluminescence intensity and lifetime of the heptamethine cyanine dye are affected by the Ag nanowires. Both the photoluminescence intensity and the decay rate of the heptamethine cyanine dye are greatly enhanced by the Ag nanostructures and are caused by the interactions between the excited-state fluorophore and the local electric field near the metal particles.
    Type of Medium: Online Resource
    ISSN: 0217-9849 , 1793-6640
    URL: Article
    DOI: 10.1142/S0217984909018928
    RVK:
    UA 5534.B
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2009
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