| 1. |
- Ablikim, M., et al.
(författare)
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Measurements of (XcJ)-> K+K-K+K- decays
- 2006
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Ingår i: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 642:3, s. 197-202
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Tidskriftsartikel (refereegranskat)abstract
- Using 14M psi(2S) events taken with the BESII detector, chi(cJ) -> 2(K+K-) decays are studied. For the four-kaon final state, the branching fractions are B(chi(c0,1,2) ->.2(K+K-)) = (3.48 +/- 0.23 +/- 0.47) x 10(-3), (0.70 +/- 0.13 +/- 0.10) x 10(-3), and (2.17 +/- 0.20 +/- 0.31) x 10(-3). For the phi K+K- final state, the branching fractions, which are measured for the first time, are B(chi(c0,1,2) -> phi K+K-) = (1.03 +/- 0.22 +/- 0.15) x 10(-3), (0.46 +/- 0.16 +/- 0.06) x 10(-3), and (1.67 +/- 0.26 +/- 0.24) x 10(-4). For the phi phi final state, B(chi(c0,2) -> phi phi) = (0.94 +/- 0.21 +/- 0.13) x 10(-3) and (1.70 +/- 0.30 +/- 0.25) x 10(-3).
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| 2. |
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| 3. |
- Chen, D. R., et al.
(författare)
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Band-rejection fiber filter and fiber sensor based on a Bragg fiber of transversal resonant structure
- 2008
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Ingår i: Optics Express. - 1094-4087. ; 16:21, s. 16489-16495
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Tidskriftsartikel (refereegranskat)abstract
- We propose a novel band-rejection fiber filter based on a Bragg fiber of transversal resonant structure, which can also be used as a fiber sensor. Defect layers are introduced in the periodic high/low index structure in the cladding of the Bragg fiber. Coupling between the core mode and the defect mode results in large confinement loss for some resonant wavelengths inside the band gap of the Bragg fiber. A segment of the Bragg fiber of transversal resonant structure can be used as a band-rejection fiber filter, whose characteristics are mainly determined by the defect layer. The loss peak wavelength of the Bragg fiber is dependent on the refractive index and the thickness of the defect layer which indicates its applications of refractive index and strain sensing.
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| 4. |
- Hsieh, Y S Y, et al.
(författare)
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Biologically active polysaccharides in medicinal plants.
- 2009
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Ingår i: New Zealand Journal of Forestry Science. - : Scion. ; 39, s. 217-223
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Tidskriftsartikel (refereegranskat)abstract
- Biologically active polysaccharides from medicinal plants have been studied for many years. In addition to immuno-modulating effects, human clinical studies have shown that some polysaccharides have certain benefits for human health. Most studies have focused on the side chains of pectic rhamnogalacturonan I (RG-I), particularly the Type II arabinogalactans, which have been isolated and shown to have anti-complementary and other immuno-activities. These studies have provided valuable information about how carbohydrate moieties induce certain biological events.
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| 5. |
- Kim, Do Kyung, et al.
(författare)
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Monodispersed Fe-Pt nanoparticles for biomedical applications
- 2005
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Ingår i: Journal of Applied Physics. - : AIP Publishing. - 0021-8979 .- 1089-7550. ; 97:10, s. 10Q918-
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Tidskriftsartikel (refereegranskat)abstract
- Monodispersed Fe-Pt nanoparticles are promising candidates for biomedical applications with an average particle diameter of 6.9 nm Fe48Pt52, 3.3 nm Fe52Pt48, and 4.2 nm Fe70Pt30. They are prepared by simultaneous chemical reduction of Pt(acac)(2) and thermal decomposition of Fe(CO)(5) in the presence of surfactant as an anti-oxidation reagent and amine as a stabilizer. The blocking temperatures, T-b, of 9 K for Fe70Pt30, 11 K for Fe52Pt48 and 14.4 K for Fe48Pt52 and the mean diameter of the spherical magnetic particles were estimated from the calculated volume to be 3.6, 3.1, and 3.8 nm. The cytotoxicity of unmodified Fe-Pt nanoparticles was performed in brain endothelial cells. Fe48Pt52 nanoparticles were not found to have any significant toxicity on bEnd3 cells during a 24 h period.
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| 6. |
- Malkoch, Michael, et al.
(författare)
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Synthesis of well-defined hydrogel networks using Click chemistry
- 2006
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Ingår i: Chemical Communications. - 1359-7345 .- 1364-548X. ; :26, s. 2774-2776
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Tidskriftsartikel (refereegranskat)abstract
- New PEG-based hydrogel materials have been synthesized by Click chemistry and shown to result in well-defined networks having significantly improved mechanical properties; the selectivity of the azide/ acetylene coupling reaction also allows for the incorporation of various additives and functional groups leading to chemical tailoring of the hydrogels.
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| 7. |
- Smith, FJD, et al.
(författare)
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The genetic basis of pachyonychia congenita
- 2005
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Ingår i: The journal of investigative dermatology. Symposium proceedings. - : Elsevier BV. - 1087-0024. ; 10:1, s. 21-30
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Tidskriftsartikel (refereegranskat)
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| 8. |
- Yang, T, et al.
(författare)
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Fe5O5[B6O10(OH)3]·nH2O: Wave-layered Iron Borate and Frustrated Antiferromagnetism
- 2009
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Ingår i: Inorganic Chemistry. - : American Chemical Society (ACS). - 0020-1669 .- 1520-510X. ; 48:23, s. 11209-11214
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Tidskriftsartikel (refereegranskat)abstract
- The first layered iron borate, Fe5O5[B6O10(OH)3]·nH2O, has been prepared by the boric acid flux method. Its structure, determined by single crystal X-ray diffraction, contains a double FeO6-octahedral layer and an unusual [B6O13] chain. The rigid and cambered [B6O13] chains bend the octahedral layers, resulting in a wave-like and sandwiched structure. Crystallographic study indicates the structural modulation is mainly from the [B6O13] chains because of the insertion of water molecules in between. Nevertheless, FeO6 layers in the average structure, which are well separated by borate chains, is still a reasonable model to understand the two-dimensional magnetism. The strong antiferromagnetic interactions and the complex Fe3+-net suggest a possible geometrically magnetic frustration, which may be the reason for the second-order temperature-induced magnetic transition at 125 K. The condensed Fe3+ layers and the relatively low redox potential at about 1.25 V versus Li+/Li show its potentials as an anodic material.
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