Type IX SLAP Lesion to Non-Throwing Shoulder of Collegiate Baseball Player

In Volume 3, Issue 1 of the JSMAHS you will find Professional research abstracts, as well as Under Graduate student research abstracts, case reports, and critically appraised topics. Thank you for viewing this 3rd Annual OATA Special Edition

A lattice calculation of B -> K(*) form factors

Lattice QCD can contribute to the search for new physics in b -> s decays by providing first-principle calculations of B -> K(*) form factors. Preliminary results are presented here which complement sum rule determinations by being done at large q^2 and which improve upon previous lattice calculations by working directly in the physical b sector on unquenched gauge field configurations.Comment: 6 pages, 4 figures, Proceedings of CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 201

Ogilvie's syndrome with caecal perforation after Caesarean section: a case report

<p>Abstract</p> <p>Introduction</p> <p>Ogilvie's syndrome describes the phenomenon of an acute colonic pseudo-obstruction without a mechanical cause. It is rare but has been reported to occur after Caesarean section. It can lead to bowel perforation or ischaemia.</p> <p>Case presentation</p> <p>A healthy, 28-year-old Caucasian woman presented 2 weeks past her expected date of delivery for her first pregnancy. She underwent an uncomplicated elective Caesarean section but developed abdominal pain and bloating postoperatively and was subsequently diagnosed with acute colonic pseudo-obstruction, also known as Ogilvie's syndrome.</p> <p>Conclusion</p> <p>This case report highlights the rare, but potentially dangerous, diagnosis of Ogilvie's syndrome after Caesarean section. It is of particular interest to obstetricians, midwifery staff and general surgeons and shows the importance of accurate diagnosis, regular abdominal reassessment and early senior input to ensure appropriate and rapid treatment.</p

Lattice QCD calculation of form factors describing the rare decays B→K∗ℓ+ℓ−B \to K^* \ell^+ \ell^- and Bs→ϕℓ+ℓ−B_s \to \phi \ell^+ \ell^-

The rare decays $B^0 \to K^{*0} \mu^+ \mu^-$ and $B_s \to \phi \mu^+ \mu^-$ are now being observed with enough precision to test Standard Model predictions. A full understanding of these decays requires accurate determinations of the corresponding hadronic form factors. Here we present results of lattice QCD calculations of the $B \to K^*$ and $B_s \to \phi$ form factors; we also determine the form factors relevant for the tree-level decays $B_s \to K^* \ell \nu$. We use full-QCD configurations including 2+1 flavors of sea quarks using an improved staggered action, and we employ lattice non-relativistic QCD to describe the bottom quark.Comment: 23 pages. Version 3 (accepted to Phys. Rev. D) includes interpolations to the physical strange quark mass. Central values shift by less than 1 sigma. Tables and figures updated accordingl

Calculation of B0→K∗0μ+μ−B^0 \to K^{*0} \mu^+ \mu^- and Bs0→ϕμ+μ−B_s^0 \to \phi \mu^+ \mu^- observables using form factors from lattice QCD

We calculate the differential branching fractions and angular distributions of the rare decays $B^0 \to K^{*0} \mu^+ \mu^-$ and $B_s^0 \to \phi \mu^+ \mu^-$, using for the first time form factors from unquenched lattice QCD. We focus on the kinematic region where the $K^*$ or $\phi$ recoils softly; there the newly available form factors are most precise and the nonlocal matrix elements can be included via an operator product expansion. Our results for the differential branching fractions calculated in the Standard Model are higher than the experimental data. We consider the possibility that the deviations are caused by new physics, and perform a fit of the Wilson coefficients $C_9$ and $C_9^\prime$ to the experimental data for multiple $B^0 \to K^{*0} \mu^+ \mu^-$ and $B_s^0 \to \phi \mu^+ \mu^-$ observables. In agreement with recent results from complementary studies, we obtain $C_9-C_9^{SM} = -1.0 \pm 0.6$ and $C_9^\prime = 1.2 \pm 1.0$, whose deviations from zero would indicate the presence of non-standard fundamental interactions.Comment: 6 pages. Updated form factors according to arXiv:1310.3722v3. New discussion of charmonium resonances. Accepted by PR

Type IX SLAP Lesion to Non-Throwing Shoulder of Collegiate Baseball Player

In Volume 3, Issue 1 of the JSMAHS you will find Professional research abstracts, as well as Under Graduate student research abstracts, case reports, and critically appraised topics. Thank you for viewing this 3rd Annual OATA Special Edition

Serviceability limit state design in geogrid reinforced walls and slopes

The design of geogrid reinforced walls and slopes, although a well-established science, still contains many unknowns, particularly around long-term serviceability. Serviceability, for walls and slopes, is associated with excessive deformation or damage affecting appearance, maintenance or service life. In most designs, the serviceability limit state is not considered critical. Currently, most serviceability checks do not attempt to determine or prescribe deformation limits on the built wall or slope, but rather impose limits on the theoretical mobilised strains of geogrid reinforcement, considering the unfactored imposed loads. In many cases, these prescribed post-construction allowable strain limits are based on long-term, or accelerated creep testing, undertaken when the geogrid is not interacting with soil. In some situations, designs are grossly overconservative. This paper reviews the current state of practice, summarising some of the serviceability design issues around geogrid reinforced walls and slopes, with a particular focus on long-term post-construction deformations. The paper goes on to highlight areas of non-conformity in serviceability design, between the major national codes in Europe, assessing their strengths and weaknesses. Additionally, the paper highlights potential areas of on-going and further work that may offer a better understanding of the serviceability limit state of geogrid reinforced soil walls and slopes

Modelling deformation during the construction of wrapped geogrid reinforced structures

Although geogrids and geotextiles have been successfully used for over a quarter of a century to reinforce soil, there are currently no commonly agreed analytical methods to model their deformation behaviour. The Serviceability Limit State is becoming an ever more important design consideration, as structures are built with increasingly tighter tolerances. While there are many deformation databases and design charts available, providing information and guidance on the sensitivity to certain design variables, these are largely focused on facets such as height, shear strength and geogrid ultimate strength and do not consider construction method. Following a review of existing analytical and empirical guidance, this paper presents numerical modelling derived guidance for flexible faced Geogrid Reinforced Structures constructed using cohesionless fill that incorporates installation methods. The modelling approach is validated against measured results from three varied case studies, before analysing the changes in deformation distribution resulting from two different construction methods (layer by layer and full height construction). For the conditions analysed, including height of the structure, the lateral deformation resulting from layer by layer construction, was shown to be consistently greater, than for full height construction. In contrast, an analysis of post-construction deformation, for each of the construction methods, found full height construction to be more sensitive to post-construction loading, for the conditions considered. For low wall height structures constructed using the layer by layer method, <5 metres, this study indicates that horizontal face deformations are underestimated by current guidance