Non-perturbative gluons in diffractive photo-production of J/Psi

The modifications induced in the calculation of the cross section of the diffractive process gamma gamma -> J/Psi J/Psi when the gluon propagator is changed are analyzed. Instead of the usual perturbative gluon propagator, alternative forms obtained using non-perturbative methods like Dyson-Schwinger equations are used to consider in a more consistent way the contributions of the infrared region. The result shows a reduction in the differential cross-section for low momentum transfer once compared with the perturbative result, to be confirmed with future experimental results from TESLA.Comment: 17 pages, 5 figures, RevTex, Accepted for publication in Phys. Lett.

The self-care for people initiative: the outcome evaluation.

To determine the effects of a community-based training programme in self-care on the lay population

Self-care in primary care: findings from a longitudinal comparison study.

To examine the effects of self-care training workshops for primary healthcare workers on frequently attending patients

Cyber-SHIP: Developing Next Generation Maritime Cyber Research Capabilities

As a growing global threat, cyber-attacks can cost millions of dollars or endanger national stability and human lives. While relatively well understood in most sectors, it is becoming clear that, although the maritime sector is becoming more digitally advanced (e.g., autonomy), it is not well protected against cyber or cyber-physical attacks and accidents. To help improve sector-wide safety and resiliency, the University of Plymouth (UoP) is creating a specialised maritime-cyber lab, which combines maritime technology and traditional cyber-security labs. This is in response to the lack of research and mitigation capabilities and will create a new resource capability for academia, government, and industry research into maritime cybersecurity risks and threats. These lab capabilities will also enhance existing maritime-cyber capabilities across the world, including risk assessment frameworks, cybersecurity ranges/labs, ship simulators, mariner training programmes, autonomous ships, etc. The goal of this paper is to explain the need for next generation maritime-cyber research capabilities, and demonstrate how something like the proposed Cyber-SHIP Lab (Hardware, Software, Information and Protections) will help industry, government, and academia understand and mitigate cyber threats in the maritime sector. The authors believe a next generation cyber-secure lab should host a range of real, non-simulated, maritime systems. With multiple configurations to mirror existing bridge system set-ups, the technology can be studied for individual system weakness as well as the system-of-systems vulnerabilities. Such as lab would support a range of research that cannot be achieved with simulators alone and help support the next generation of cyber-secure marine systems. </jats:p

The Use of Self-Expanding Plastic Stents in the Management of Oesophageal Leaks and Spontaneous Oesophageal Perforations

Leakage after oesophageal anastomosis or perforation remains a challenge for the surgeon. Traditional management has been operative repair or intensive conservative management. Both treatments are associated with prolonged hospitalisation and high morbidity and mortality rates. Self-expanding metallic stents have played an important role in the palliation of malignant oesophageal strictures and the treatment of tracheoesophageal fistulae. However, self-expanding metal stents in benign oesophageal disease are associated with complications such as bleeding, food bolus impaction, stent migration, and difficulty in retrieval. The Polyflex stent is the only commercially available self-expanding plastic stent which has been used in the management of malignant oesophageal strictures with good results. This review will consider the literature concerning the use of self-expanding plastic stents in the treatment of oesophageal anastomotic leakage and spontaneous perforations of the oesophagus

Vector Meson Photoproduction from the BFKL Equation II: Phenomenology

Diffractive vector meson photoproduction accompanied by proton dissociation is studied for large momentum transfer. The process is described by the non-forward BFKL equation which we use to compare to data collected at the HERA collider.Comment: 39 pages, 29 figure

Double vector meson production from the BFKL equation

The double vector meson production in two photon collisions is addressed assuming that the color singlet $t$-channel exchange carries large momentum transfer. We consider the non-forward solution of the BFKL equation at high energy and large momentum transfer and estimate the total and differential cross section for the process $\gamma \gamma \to V_1 V_2$, where $V_1$ and $V_2$ can be any two vector mesons ($V_i = \rho, \omega, \phi, J/\Psi, \Upsilon$). A comparison between our predictions and previous theoretical results obtained at Born level or assuming the Pomeron-exchange factorization relations is presented. Our results demonstrate that the BFKL dynamics implies an enhancement of the cross sections. Predictions for the future linear colliders (TESLA, CLIC and ILC) are given.Comment: 13 pages, 3 tables, 7 figures. Minor changes. Accepted for publication in Eur. Phys. J.

Long-term survival from gastrocolic fistula secondary to adenocarcinoma of the transverse colon

BACKGROUND: Gastrocolic fistula is a rare presentation of both benign and malignant diseases of the gastrointestinal tract. Malignant gastrocolic fistula is most commonly associated with adenocarcinoma of the transverse colon in the Western World. Despite radical approaches to treatment, long-term survival is rarely documented. CASE PRESENTATION: We report a case of a 24-year-old woman who presented with the classic triad of symptoms associated with gastrocolic fistula. Radical en-bloc surgery and adjuvant chemotherapy were performed. She is still alive ten years after treatment. CONCLUSIONS: Gastrocolic fistula is an uncommon presentation of adenocarcinoma of the transverse colon. Radical en-bloc surgery with adjuvant chemotherapy may occasionally produce long-term survival

Jet vetoing and Herwig++

We investigate the simulation of events with gaps between jets with a veto on additional radiation in the gap in Herwig++. We discover that the currently-used random treatment of radiation in the parton shower is generating some unphysical behaviour for wide-angle gluon emission in QCD 2 to 2 scatterings. We explore this behaviour quantitatively by making the same assumptions as the parton shower in the analytical calculation. We then modify the parton shower algorithm in order to correct the simulation of QCD radiation.Comment: 18 pages, 11 figure

Multiple Hard Parton Interactions at HERA

At HERA, the large flux of almost real photons accompanying the electron beam leads to the copious photoproduction of jets. Regions of small momentum fractions $x$ of the incoming particles are explored, where the density of partons is high. As a result, the probability for more than one hard partonic scattering occurring in a single $\gamma p$ collision could become significant. It is well known that this effect modifies the contribution of jets (minijets) to the total cross section. We discuss the latest HERA data on the total $\gamma p$ cross section in this context. The possible effects of multiple hard interactions on event shapes and jet cross sections at HERA have been studied using Monte Carlo programs. We review some of the available results, which in general indicate that the effects of multiple interactions should be significant and may already be manifest in the existing HERA data.Comment: 12 pages LATEX with 4 figures in a single uuuencoded fil