Weyl Invariance and Spurious Black Hole in Two-Dimensional Dilaton Gravity

In two-dimensional dilaton gravity theories, there may exist a global Weyl invariance which makes black hole spurious. If the global invariance and the local Weyl invariance of the matter coupling are intact at the quantum level, there is no Hawking radiation. We explicitly verify the absence of anomalies in these symmetries for the model proposed by Callan, Giddings, Harvey and Strominger. The crucial observation is that the conformal anomaly can be cohomologically trivial and so not truly anomalous in such dilaton gravity models.Comment: 28 pages, KANAZAWA-93-0

The SUSY Flavor Problem, Proton Decay and Discrete Family Symmetry

We consider a supersymmetric extension of the standard model, which possess a family symmetry based on a binary dihedral group Q6, and investigate the consequences of the family symmetry on the mixing of fermions, FCNCs and the stability of proton.Comment: 5 pages, 1 figure, to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification of Fundamental Interactions, UC Irvine, California, 12-17 June 200

D6 Family Symmetry and Cold Dark Matter at LHC

We consider a non-supersymmetric extension of the standard model with a family symmetry based on D6 Z2 Z2, where one of Z2's is exactly conserved. This Z2 forbids the tree-level neutrino masses and simultaneously ensures the stability of cold dark matter candidates. From the assumption that cold dark matter is fermionic we can single out the D6 singlet right-handed neutrino as the best cold dark mater candidate. We find that an inert charged Higgs with a mass between 300 and 750 GeV decays mostly into an electron (or a positron) with a large missing energy, where the missing energy is carried away by the cold dark matter candidate. This will be a clean signal at LHC.Comment: 20 pages, 7 figure

THE RELATIONSHIP BETWEEN FOOT MOVEMENT AND THE COM VELOCITY IN ELITE FEMALE BRESTSTROKE SWIMMERS

The purpose of this study was to investigate the effect of foot movement on the instantaneous COM velocity changing during kick movement for elite female breaststroke swimmers. Nine elite swimmers swam at their maximal effort in a 25-m pool. The swimming motions were recorded with the motion capture system. The COM velocity generated by kick movement was not related the foot velocity. In contrast, the COM velocity was correlated with the sweepback angle of foot. The swimmers who showed high kick velocity were moved their foot outward during early kick movement. In contrast the swimmer who showed low kick velocity moved their foot backward. These results suggest that the higher increased COM velocity obtained by kick movement would not be related to foot velocity, but foot angle for elite female swimmers

Molecular dynamics and self-diffusion in supercritical water

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, February 2001.Includes bibliographical references.Supercritical water (SCW) which exists beyond the critical point (Tc=647.2K, Pc=221bar) is an innovative solvent to dissolve organic material. Many applications of this new solvent such as oxidation of organic wastes and separation of metals have been researched; however, the properties of SCW have not sufficiently been understood due to the difficulty in experimental measurements at high temperatures and high pressures. Computer simulation is one of the best tools to predict and analyze the properties which are difficult to be experimentally obtained. The goals of this research is to gain a better understanding as to self-diffusivity of SCW, of which experimental data is limited, through molecular dynamic simulation. Extended Simple Point Charge (SPC/E) model reproduced the self-diffusion coefficient of water in the range of the temperature, 673-873K and the density, 0.125- 0.7g/cm3. In contrast, Simple Potential Charge (SPC) model was not relevant to calculate selfdiffusivity. In order to investigate self-diffusivity in the near critical region, the critical point of SPC/E model was calculated from direct simulation method of two coexisitng phases. Interpolating the simulated orthobaric densities by the scaling law ([beta]=0.325) approximation, Tc=616K and pc=0.296g/cm 3 were obtained. This value was explicitly lower than the expected critical point. By comparing reduced pressure/reduced density relationship from simulated data with that of experimental data, the critical point was revised to around 646K and 0.290g/cm3 which are very close to real water's data ( Tc=647K and rc=0.322g/cm3 ). Based on this obtained critical point, the self-diffusion coefficient of water in the near critical region was studied. The small drop of self-diffusion coefficient near critical point was observed from simulation results. The drop point was a little different from the critical point.by Yuji Kubo.S.M

Liposarcoma Arising in the Foot: A Case Report

Liposarcoma is categorized as a soft tissue sarcoma and most commonly appears in the lower extremities and rarely in the foot during adulthood. We present a very rare case report of a primary well-differentiated liposarcoma arising in the foot on a 60-year-old female. Marginal resection of the tumor with metatarsal ray amputation was eventually performed. The patient's postoperative course was uneventful without recurrence 5 years after the original operation. The authors review the literature and also report on the low incidence of this tumor arising in the foot

93Nb- and 27Al-NMR/NQR studies of the praseodymium based PrNb2Al20

International Conference on Strongly Correlated Electron Systems 2014 (SCES2014

Slow Fetal Heart Rate before Miscarriage in the Early First Trimester Predicts Fetal Aneuploidy in Women with Recurrent Pregnancy Loss

Establishing whether miscarriages result from fetal aneuploidy or other factors is important for treating recurrent pregnancy loss. We examined the relationship between fetal heart rate (FHR) before miscarriage in the early first trimester and fetal karyotype, analyzing 223 pregnant women with recurrent pregnancy loss. Among the pregnancies, 110 resulted in live births regarded as normal karyotype (the Norm-group). The other 113 pregnancies ended in miscarriage, and we categorized them into groups based on fetal karyotype, determined by chorionic villus sampling: the Misc-NK (normal karyotype) group, n=35 euploid cases; the Misc-CA1 (chromosomal abnormality) group, n=18 cases of aneuploidy with trisomies 13/18/21, Turner’s syndrome, or Klinefelter’s syndrome; and the Misc-CA2 subgroup, n=60 cases of other aneuploidies excluding those in the Misc-CA1 group. We compared the groups’ regression line slopes and intercepts for FHR by an analysis of covariance. The FHRs of the Norm, Misc-NK and Misc-CA1 groups increased from 36 to 49 days after fertilization, but did not significantly differ across these groups. The Misc-CA2 group’s FHR did not increase and significantly differed from the other three groups (p<0.01). These results suggest that the absence of an increase in FHR in early pregnancy may indicate the presence of chromosomal abnormalities causing miscarriage

Seasonal Fluctuation of Polycyclic Aromatic Hydrocarbons and Aerosol Genotoxicity in Long-Range Transported Air Mass Observed at the Western End of Japan

In order to clarify the level transboundary air pollution caused by polycyclic aromatic hydrocarbons (PAHs) and genotoxic substances, aerosols were collected from forest and suburban sites in Nagasaki, west Japan, for 6 years. The PAH concentration was measured, and the genotoxicity of the substances were evaluated using the umu test. The results showed no notable trends in the concentration or toxicity of either sites throughout the study period. The suburban and forest sites shared similar seasonal fluctuation patterns and quantitative values, suggesting that the western end of Japan might be affected by long-range transported pollutants, especially in winter. PAH concentration and genotoxicity showed the same seasonal patterns of increased levels in winter and lower levels in summer. This suggests that PAHs and genotoxic substances were correlated and share common sources. Back trajectory and source analyses were conducted using the diagnostic ratios of PAHs. It was predicted that air pollution by PAHs at the forest site arise predominantly as a result of biomass or coal combustion in continental regions, such as northern parts of China and the Korean Peninsula. This is particularly expected in winter. Therefore, genotoxic substances would also be strongly influenced by transboundary pollution from the continental region. In addition, it was estimated that the contribution of transboundary PAH pollution could reach 70% at the suburban site in winter