25 research outputs found

    Series expansions of the percolation probability for directed square and honeycomb lattices

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    We have derived long series expansions of the percolation probability for site and bond percolation on directed square and honeycomb lattices. For the square bond problem we have extended the series from 41 terms to 54, for the square site problem from 16 terms to 37, and for the honeycomb bond problem from 13 terms to 36. Analysis of the series clearly shows that the critical exponent ÎČ\beta is the same for all the problems confirming expectations of universality. For the critical probability and exponent we find in the square bond case, qc=0.3552994±0.0000010q_c = 0.3552994\pm 0.0000010, ÎČ=0.27643±0.00010\beta = 0.27643\pm 0.00010, in the square site case qc=0.294515±0.000005q_c = 0.294515 \pm 0.000005, ÎČ=0.2763±0.0003\beta = 0.2763 \pm 0.0003, and in the honeycomb bond case qc=0.177143±0.000002q_c = 0.177143 \pm 0.000002, ÎČ=0.2763±0.0002\beta = 0.2763 \pm 0.0002. In addition we have obtained accurate estimates for the critical amplitudes. In all cases we find that the leading correction to scaling term is analytic, i.e., the confluent exponent Δ=1\Delta = 1.Comment: LaTex with epsf, 26 pages, 2 figures and 2 tables in Postscript format included (uufiled). LaTeX version of tables also included for the benefit of those without access to PS printers (note that the tables should be printed in landscape mode). Accepted by J. Phys.

    Jets and energy flow in photon-proton collisions at HERA

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    Measurements of electroweak Wjj production and constraints on anomalous gauge couplings with the ATLAS detector

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    Measurements of the electroweak production of a W boson in association with two jets at high dijet invariant mass are performed using root s = 7 and 8 TeV proton-proton collision data produced by the Large Hadron Collider, corresponding respectively to 4.7 and 20.2 fb(-1) of integrated luminosity collected by the ATLAS detector. The measurements are sensitive to the production of a W boson via a triple-gauge-boson vertex and include both the fiducial and differential cross sections of the electroweak process

    Measurement of the inclusive cross-section for the production of jets in association with a Z boson in proton-proton collisions at 8 TeV using the ATLAS detector

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    The inclusive cross-section for jet production in association with a Z boson decaying into an electron–positron pair is measured as a function of the transverse momentum and the absolute rapidity of jets using 19.9 fb −1 of s√=8 TeV proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider. The measured Z + jets cross-section is unfolded to the particle level. The cross-section is compared with state-of-the-art Standard Model calculations, including the next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations, corrected for non-perturbative and QED radiation effects. The results of the measurements cover final-state jets with transverse momenta up to 1 TeV, and show good agreement with fixed-order calculations

    Cervical cancer and intraepithelial neoplasia

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    Cervical cancer is the second most frequent malignancy in women. Infection with high-risk papillomaviruses causes cervical cancer and can be prevented by vaccination. Secondary prevention using cytology and/or human papillomavirus testing successfully decreases the incidence of cancer by detection of cervical intraepithelial neoplasia (CIN). Colposcopy is used to locate CIN and to assure preservation of healthy tissue when removing CIN. Diagnosis of CIN and cancer is based on histopathology. In invasive disease, imaging techniques such as MRI or PET-CT help to assess the locoregional extent of the disease. For staging, the FIGO and TNM system are applied. Laparoscopic staging, especially of lymph nodes, is most reliable for the assessment of the biology of invasive disease. Disease-based treatment of women with cervical cancer is an interdisciplinary effort. Nerve sparing, fertility sparing, and lymph node sparing are recent surgical concepts which lead to improved quality of life for women diagnosed with early-stage disease. In advanced-stage disease, laparoscopic staging followed by primary chemoradiation is the treatment of choice. Copyright \ua9 2012 S. Karger AG, Basel

    Do cheerfulness, exhilaration, and humor production moderate pain tolerance? A FACS study

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    Prior studies have shown that watching a funny film leads to an increase in pain tolerance. The present study aimed at separating three factors considered potentially essential (mood, behavior, and cognition related to humor) and examined whether they are responsible for this effect. Furthermore, the study examined whether trait cheerfulness and trait seriousness, as measured by the State-Trait-Cheerfulness-Inventory (STCI; Ruch et al. 1996), moderate changes in pain tolerance. Fifty-sixty female subjects were assigned randomly to three groups, each having a different task to pursue while watching a funny film: (1) get into a cheerful mood without smiling or laughing ("Cheerfulness"); (2) smile and laugh extensively ("Exhilaration"); and (3) produce a humorous commentary to the film ("Humor production"). Pain tolerance was measured using the cold pressor test before, immediately after, and twenty minutes after the film. Results indicated that pain tolerance increased for participants from before to after watching the funny film and remained high for the twenty minutes. This effect was moderated by facial but not verbal indicators of enjoyment of humor. Participants low in trait seriousness had an overall higher pain tolerance. Subjects with a high score in trait cheerfulness showed an increase in pain tolerance after producing humor while watching the film whereas subjects low in trait cheerfulness showed a similar increase after smiling and laughter during the film

    Antibody Combining Sites — Past, Present and Future

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