331 research outputs found
Interval valued intuitionistic -fuzzy -submodules
On the basis of the concept of the interval valued intuitionistic fuzzy sets
introduced by K.Atanassov, the notion of interval valued intuitionistic fuzzy
-submodules of an -module with respect to -norm and -norm
is given and the characteristic properties are described. The homomorphic
image and the inverse image are investigated.In particular, the connections
between interval valued intuitionistic -fuzzy -submodules and
interval valued intuitionistic -fuzzy submodules are discussed
Pinoresinol diglucoside exhibits protective effect on dexamethasone-induced osteoporosis in rats
Purpose: To investigate the effect of pinoresinol diglucoside (PDG) on dexamethasone-induced osteoporosis in rats.Methods: Sixty Wistar rats were randomly and equally divided into normal, control, alendronate and PDG (10, 20 or 40 mg/kg) groups. Bone tissue parameters, including length, transverse diameter, weight, bone mineral content (BMC) and bone mineral density (BMD), were determined using vernier caliper, electronic balance and single photon bone mineral density meter. Serum biochemical indices, including Ca2+, inorganic phosphorus (IP), IL-6, TNF-α and alkaline phosphatase (ALP), were determined using colorimetry and enzyme-linked immunosorbent assay (ELISA). Osteoprotegerin (OPG) and receptor activator of nuclear factor-κB ligand (RANKL) proteins were detected by Western blot.Results: PDG (10, 20 or 40 mg/kg) increased significantly (p < 0.05 or 0.01) transverse diameter (3.64 – 3.79 vs. 3.31 mm), weight (0.73 – 0.78 vs. 0.67 g), BMC (0.16 – 0.23 vs. 0.12 g/cm), BMD (0.27 – 0.35 vs. 0.22 g/cm2) of right femur, serum Ca2+ level (2.16 – 2.39 vs. 1.94 mmol/L), and OPG level of left femur, compared with those in the control group. PDG (10, 20 or 40 mg/kg) reduced significantly (p < 0.05 or 0.01) serum IP (1.34 – 1.14 vs. 1.76 mmol/L), IL-6 (103.25 – 95.38 vs. 108.74 ng/L), TNF-α (87.46 – 82.05 vs. 92.38 ng/L), ALP (334.79 – 276.32 vs. 486.45 U/L) levels or activities, and RANKL level of left femur, compared with those in the control group.Conclusion: PDG exhibits a protective effect on dexamethasone-induced osteoporosis by increasing bone mass and regulating bone metabolism. Thus, PDG may be a candidate drug for treating osteoporosis.Keywords: Pinoresinol diglucoside, Osteoporosis, Bone mass, Bone metabolism, Dexamethasone, Osteoprotegeri
Low-energy Scattering of System and the Resonance-like Structure
In this paper, low-energy scattering of the meson
system is studied within L\"uscher's finite-size formalism using
twisted mass gauge field configurations. With three different pion mass values,
the -wave threshold scattering parameters, namely the scattering length
and the effective range , are extracted in channel. Our
results indicate that, in this particular channel, the interaction between the
two vector charmed mesons is weakly repulsive in nature hence do not support
the possibility of a shallow bound state for the two mesons, at least for the
pion mass values being studied. This study provides some useful information on
the nature of the newly discovered resonance-like structure
observed in various experiments.Comment: 11 pages, 6 figures. arXiv admin note: substantial text overlap with
arXiv:1403.131
A Lattice Study of Near-threshold Scattering
In this exploratory lattice study, low-energy near threshold scattering of
the meson system is analyzed using lattice QCD with
twisted mass fermion configurations. Both s-wave () and p-wave
() channels are investigated. It is found that the interaction between
the two charmed mesons is attractive near the threshold in both channels. This
calculation provides some hints in the searching of resonances or bound states
around the threshold of system.Comment: 20 pages, 15 figures, matches the version on PR
Two Photon Decays of from Lattice QCD
We present an exploratory lattice study for the two-photon decay of
using twisted mass lattice QCD gauge configurations generated by the
European Twisted Mass Collaboration. Two different lattice spacings of
fm and fm are used in the study, both of which are of
physical size of 2. The decay widths are found to be KeV for the
coarser lattice and KeV for the finer lattice respectively where the
errors are purely statistical. A naive extrapolation towards the continuum
limit yields KeV which is smaller than the previous
quenched result and most of the current experimental results. Possible reasons
are discussed.Comment: 13 pages, 7 figures; matches the published versio
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