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The exclusive photoproduction reactions γp → J/ψ(1S)p and γp → ψ(2S)p have been measured at an ep centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb−1. The measurement was made in the kinematic range 30 < W < 180 GeV, Q2< 1 GeV2 and |t| < 1 GeV2, where W is the photon-proton centre-of-mass energy, Q2 is the photon virtuality and t is the squared four-momentum transfer at the proton vertex. The decay channels used were J/ψ(1S) → μ+μ−, ψ(2S) → μ+μ− and ψ(2S) → J/ψ(1S)π+π− with subsequent decay J/ψ(1S) → μ+μ−. The ratio of the production cross sections, R = σψ(2S)/σJ/ψ(1S), has been measured as a function of W and |t| and compared to previous data in photoproduction and deep inelastic scattering and with predictions of QCD-inspired models of exclusive vector-meson production, which are in reasonable agreement with the data. [ABSTRACT FROM AUTHOR]

Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb in the range of exchanged-photon virtuality 10-350 GeV. Outgoing isolated photons with transverse energy 4 < E < 15 GeV and pseudorapidity − 0.7 < η < 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 < E < 35 GeV and −1 .5 < η < 1 .8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the k -factorisation approach. [ABSTRACT FROM AUTHOR]

Copyright of Anaesthesiology & Intensive Medicine / Anesteziologie a Intenzivní Medicína is the property of Czech Medical Association of JE Purkyne and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Anaesthesiology & Intensive Medicine / Anesteziologie a Intenzivní Medicína is the property of Czech Medical Association of JE Purkyne and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Anaesthesiology & Intensive Medicine / Anesteziologie a Intenzivní Medicína is the property of Czech Medical Association of JE Purkyne and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Measurements of open charm production cross sections in deep-inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections $\sigma_{\rm red}^{c\bar{c}}$ for charm production are obtained in the kinematic range of photon virtuality 2.5≤ Q≤2000 GeV and Bjorken scaling variable 3⋅10≤ x≤5⋅10. The combination method accounts for the correlations of the systematic uncertainties among the different data sets. The combined charm data together with the combined inclusive deep-inelastic scattering cross sections from HERA are used as input for a detailed NLO QCD analysis to study the influence of different heavy flavour schemes on the parton distribution functions. The optimal values of the charm mass as a parameter in these different schemes are obtained. The implications on the NLO predictions for W and Z production cross sections at the LHC are investigated. Using the fixed flavour number scheme, the running mass of the charm quark is determined. [ABSTRACT FROM AUTHOR]

A combination of the inclusive diffractive cross section measurements made by the H1 and ZEUS Collaborations at HERA is presented. The analysis uses samples of diffractive deep inelastic ep scattering data at a centre-of-mass energy $\sqrt{s}=318~\mathrm{GeV}$ where leading protons are detected by dedicated spectrometers. Correlations of systematic uncertainties are taken into account, resulting in an improved precision of the cross section measurement which reaches 6 % for the most precise points. The combined data cover the range 2.5< Q<200 GeV in photon virtuality, $0.00035 < \mbox{$x_{\mathbb{P}}$}< 0.09$ in proton fractional momentum loss, 0.09<| t|<0.55 GeV in squared four-momentum transfer at the proton vertex and 0.0018< β<0.816 in $\beta=x/\mbox{$x_{\mathbb{P}}$}$, where x is the Bjorken scaling variable. [ABSTRACT FROM AUTHOR]

The exclusive electroproduction of two pions in the mass range 0.4< M<2.5 GeV has been studied with the ZEUS detector at HERA using an integrated luminosity of 82 pb. The analysis was carried out in the kinematic range of 2< Q<80 GeV, 32< W<180 GeV and | t|<0.6 GeV, where Q is the photon virtuality, W is the photon-proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The two-pion invariant-mass distribution is interpreted in terms of the pion electromagnetic form factor, | F( M)|, assuming that the studied mass range includes the contributions of the ρ, ρ′ and ρ′′ vector-meson states. The masses and widths of the resonances were obtained and the Q dependence of the cross-section ratios σ( ρ′→ ππ)/ σ( ρ) and σ( ρ′′→ ππ)/ σ( ρ) was extracted. The pion form factor obtained in the present analysis is compared to that obtained in e e→ π π. [ABSTRACT FROM AUTHOR]

Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q>2 GeV, and inelasticity, 0.05< y<0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F was extracted and is compared to theoretical predictions. [ABSTRACT FROM AUTHOR]

Pulsed radiofrequency treatment (PRF) applied to the suprascapular nerve may provide pain relief for patients suffering from shoulder pain as described in three case series. The effect of PRF to the suprascapular nerve was retrospectively analysed on 28 patients with shoulder pain lasting longer than 1 month, with a 6-month follow-up. Group A was treated with PRF and local anaesthetics only while group B was treated with PRF, local anaesthetic and steroid. Pain scores were evaluated before and after the procedure and at 1, 3 and 6 months. More than 50% of patients in both groups had significant pain relief after 3 months. No major, but only one minor complication occurred. Our results suggest that the analgesic effects of PRF last more than 3 months in the majority of patients. The addition of steroid to the PRF treatment appears to have no benefit. [ABSTRACT FROM AUTHOR]

A search for events containing an isolated electron or muon and missing transverse momentum produced in e p collisions is performed with the H1 and ZEUS detectors at HERA. The data were taken in the period 1994-2007 and correspond to an integrated luminosity of 0.98 fb. The observed event yields are in good overall agreement with the Standard Model prediction, which is dominated by single W production. In the e p data, at large hadronic transverse momentum P > 25GeV, a total of 23 events are observed compared to a prediction of 14.0 ± 1.9. The total single W boson production cross section is measured as 1.06 ± 0.16 (stat.) ± 0.07 (sys.) pb, in agreement with an Standard Model (SM) expectation of 1.26 ± 0.19 pb. [ABSTRACT FROM AUTHOR]

A combination is presented of the inclusive deep inelastic cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current unpolarised e ± p scattering at HERA during the period 1994-2000. The data span six orders of magnitude in negative four-momentum-transfer squared, Q 2, and in Bjorken x. The combination method used takes the correlations of systematic uncertainties into account, resulting in an improved accuracy. The combined data are the sole input in a NLO QCD analysis which determines a new set of parton distributions, HERAPDF1.0, with small experimental uncertainties. This set includes an estimate of the model and parametrisation uncertainties of the fit result. [ABSTRACT FROM AUTHOR]

Background and objective: There is increasing evidence of gender differences in the pharmacokinetics and pharmacodynamics of aminosteroid neuromuscular blocking agents. Compared to males, females are more susceptible, requiring approximately 30% less rocuronium to achieve the same degree of neuromuscular block. However, little information is available whether this difference is applicable to modern benzylisoquinolines (cisatracurium). Methods: In all, 848 patients (423 males, 425 females) undergoing general surgery under total intravenous anaesthesia with muscle relaxation, tracheal intubation and mechanical ventilation were studied. Patients were randomized to receive a single bolus dose of cisatracurium (0.1 mg kg-1 221 males and 199 females) or rocuronium (0.6 mg kg-1, 202 males and 226 females). The onset time for 95% depression of T1, clinical duration until 25% recovery and recovery index (T1 from 25% to 75%) were determined with an NMT electromyographic module of the Datex-Ohmeda S/5 Anaesthesia Monitor. The data for male and female groups were compared with appropriate statistical tests (unpaired t-test, Mann-Whitney rank sum test and Fisher's exact test). Results: In both groups (cisatracurium and rocuronium), males were significantly taller (P < 0.001) and heavier (P < 0.001) than females, but the body mass index was comparable. For rocuronium, the onset time was shorter 91.7 ± 14.3 s vs. 108.0 ± 14.6 s (P < 0.001) and the clinical duration was increased in females 43.3 ± 7.8 mm vs. 31.3 ± 5.5 mm (P < 0.001). In the cisatracurium group, both onset times (248.9 ± 60.7 s for males vs. 253.4 ± 70.9s for females) and clinical duration (42.6 ± 6.9mm for males vs. 43.1 ± 6.9 mm for females) were similar. The recovery index was identical for males and females in both groups. Conclusions: Females were more sensitive than males to a single bolus dose of rocuronium. Under the study conditions described, the onset time was shorter and the clinical duration was increased in female patients. This suggests that the routine dose of rocuronium should be reduced in females compared to males. On the contrary, we could demonstrate no gender differences in the onset time or clinical duration of cisatracurium. [ABSTRACT FROM AUTHOR]

Results on inclusive single diffraction dissociation in π and K p interactions at 250 GeV/c are presented for excited masses up to ≃9 GeV. Total and topological cross sections for meson and proton diffraction are determined and their energy dependence is studied. For meson diffraction, hadronization of the diffractive system is well described by a MC model with $$q\bar q$$ -Lund fragmentation and is found to be similar to hadronization in e e , annihilation in terms of thrust and mean charged multiplicity. Fireball-like decay models can be excluded from an elongation of the meson system along the beam-pomeron axis. [ABSTRACT FROM AUTHOR]

New results are reported on inclusive charged particle production in K p, π p and pp collisions at 250 GeV/c. Inclusive longitudinal and transverse momentum spectra of positively and negatively charged particles are presented. Scaling in the fragmentation regions and scaling violation in the central c.m. region is investigated in detail. The topological pseudo-rapidity densities are shown to scale in the c.m. energy range from 22 to 900 GeV. [ABSTRACT FROM AUTHOR]

Two-pion correlations are studied for pions of like charge in K p and π p collisions at 250 GeV/c. An enhanced production is observed at small momentum difference and is attributed to Bose-Einstein interference between identical particles. A systematic study is presented on the influence of parametrization and reference sample. Interpreted in terms of the Kopylov-Podgoretskii parametrization a size of the emitting region r≈1.4 fm is found. The Lorentz invariant parametrization of Goldhaber gives r≈0.8 fm. With fixed parametrization, similarity is found for hadronhadron, e e and lepton-hadron collisions. No multiplicity or angular dependence is found at our energy. [ABSTRACT FROM AUTHOR]

The charged particle multiplicity distribution has been studied for non-single-diffractive π p and pp collisions at $$\sqrt s = 22$$ GeV, for full phase space as well as for intervals in rapidity, azimuthal angle and transverse momentum. In general, the multiplicity distribution is well described by a negative binomial. From comparison of the distribution for negative or positive particles to that of all charged particles, cascading is favoured as an interpretation over stimulated emission. Interesting consequences follow from a comparison of our results to those at collider energies and to e e data at comparable energy. Furthermore, evidence is given that the multiplicity distribution is not exactly of negative binomial type in every (connected or disconnected) phase space region. [ABSTRACT FROM AUTHOR]

Cross sections and charged multiplicity distributions for π p, K p and pp interactions at 250 GeV/c are presented and compared to each other as well as to earlier (for π p and K p lower energy) data. Consistently, the meson-proton ( M p) data have narrower multiplicity distributions and higher average multiplicity than pp data. Up to our energy, generalized KNO functions describe the energy dependence of the shape of the multiplity distribution with one parameter for M p and one for pp collisions. If interpreted in terms of negative binomials, the parameter 1/ k tends to be slightly lower for M p than for pp data. For both types of hadron-hadron collision, 1/ k is larger than for e e and lp collisions. [ABSTRACT FROM AUTHOR]

We compare new data on low p inclusive π and ππ production in pp collisions at $$\sqrt s$$ = 62 GeV with predictions of the valon recombination and the two-chain fragmentation models. We discuss the original version of the models which are based on the assumption of universality of valon structure and jet fragmentation, respectively. Within the limitation of present analysis, both models agree well with π and ππ data, but none of them is able to provide a satisfactory description of both π and ππ distributions. [ABSTRACT FROM AUTHOR]

Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon 2.5GeV2≤Q2≤2000GeV2 and Bjorken scaling variable 3·10-5≤xBj≤5·10-2. The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as mc(mc)=1.290-0.041+0.046(exp/fit)-0.014+0.062(model)-0.031+0.003(parameterisation) GeV and mb(mb)=4.049-0.109+0.104(exp/fit)-0.032+0.090(model)-0.031+0.001(parameterisation)GeV. [ABSTRACT FROM AUTHOR]

Copyright of Nursing in Anaesthesiology & Intensive Care is the property of Evereth Publishing Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)