Quantum Quench in the Transverse Field Ising chain I: Time evolution of order parameter correlators

We consider the time evolution of order parameter correlation functions after a sudden quantum quench of the magnetic field in the transverse field Ising chain. Using two novel methods based on determinants and form factor sums respectively, we derive analytic expressions for the asymptotic behaviour of one and two point correlators. We discuss quenches within the ordered and disordered phases as well as quenches between the phases and to the quantum critical point. We give detailed account of both methods.Comment: 65 pages, 21 figures, some typos correcte

The effects inhibiting the proliferation of cancer cells by far-infrared radiation (FIR) are controlled by the basal expression level of heat shock protein (HSP) 70A

We developed a tissue culture incubator that can continuously irradiate cells with far-infrared radiation (FIR) of wavelengths between 4 and 20 μm with a peak of 7–12 μm, and found that FIR caused different inhibiting effects to five human cancer cell lines, namely A431 (vulva), HSC3 (tongue), Sa3 (gingiva), A549 (lung), and MCF7 (breast). Then, in order to make clear the control system for the effect of FIR, the gene expression concerned to the inhibition effect by FIR were analyzed. In consequence, basal expression level of HSP70A mRNA was higher in A431 and MCF7 cells than in the FIR-sensitive HSC3, Sa3, and A549 cells. Also, the over expression of HSP70 inhibited FIR-induced growth arrest in HSC3 cells, and an HSP70 siRNA inhibited the proliferation of A431 cells by irradiation with FIR. These results indicate that the effect of a body temperature range of FIR suppressing the proliferation of some cancer cells is controlled by the basal expression level of heat shock protein (HSP) 70A. This finding suggested that FIR should be very effective medical treatment for some cancer cells which have a low level of HSP70. Still more, if the level of HSP70 in any cancer of a patient was measured, the effect of medical treatment by FIR can be foreseen for the cancer

Validity and reliability of the psychometric properties of the 12-item berg balance scale (BBS-12) in the italian population with hip or knee prosthesis. A cross sectional study

BACKGROUND: Among the various equilibrium quantification techniques, the evaluation scales still represent the most widespread and useful means to evaluate balance in the clinical field, thanks to the fact they are inexpensive and easy to use. The Berg Balance Scale (BBS) is the most frequently cited scale in the literature to detect balance disorders. The aim of this study was to assess the psychometric properties of the 12-item Berg Balance Scale (BBS-12) in individuals who had undergone hip or knee replacement surgery. METHODS: Included participants were individually evaluated twice within 24 hours by the same rater. Two physiotherapists using various measurement instruments evaluated the participants using the BBS-12, the Tinetti balance assessment scale, the Short Falls Efficacy Scale–International (Short FES-I), and the 12-Item Short Form Survey (SF-12) RESULTS: There were 109 individuals included in this study. The BBS-12 showed an optimal internal consistency with a Cronbach’s alpha of 0.923 and an intraclass correlation coefficient (ICC) of 0.99 for both the intrarater and interrater reliabilities. Comparisons of the BBS-12 with the gold standards showed that the BBS-12 was positively correlated with the Short FES-I, the Tinetti balance assessment scale, and the physical health portion of the SF-12. CONCLUSIONS: Our study demonstrated the validity and reliability of the BBS-12 in assessing balance in an Italian population for those with a hip or knee prosthesis. It is now possible to use the BBS-12 as a reliable assessment tool for this population