Chronic exertional compartment syndrome in the forearm: Ultrasound-guided surgical technique.

Introduction: Chronic exertional compartment syndrome of the forearm is most commonly associated with exercise. It presents as cramping after a few minutes of activity, requiring cessation of exercise. We describe an ultrasound-guided surgical technique for the treatment of forearm chronic exertional compartment syndrome.

Rotational Excitation Cross Sections for Chloronium Based on a New 5D Interaction Potential with Molecular Hydrogen.

Chloronium (HCl) is an important intermediate of Cl-chemistry in space. The accurate knowledge of its collisional properties allows a better interpretation of the corresponding observations in interstellar clouds and, therefore, a better estimation of its abundance in these environments. While the ro-vibrational spectroscopy of HCl is well-known, the studies of its collisional excitation are rather limited and these are available for the interaction with helium atoms only.

Scattering resonances in the rotational excitation of HDO by Ne and -H: theory and experiment.

The rotational excitation of a singly deuterated water molecule (HDO) by a heavy atom (Ne) and a light diatomic molecule (H) is investigated theoretically and experimentally in the near-threshold regime. Crossed-molecular-beam measurements with a variable crossing angle are compared to close-coupling calculations based on high-accuracy potential energy surfaces. The two lowest rotational transitions, 0 → 1 and 0 → 1, are probed in detail and a good agreement between theory and experiment is observed for both transitions in the case of HDO + Ne, where scattering resonances are however blurred out experimentally.

Imaging and prognostic characterization of fat-containing hepatocellular carcinoma subtypes.

Purpose: Steatohepatitic hepatocellular carcinoma (SH-HCC) is characterized by intratumoral fat with > 50% inflammatory changes. However, intratumoral fat (with or without inflammation) can also be found in not-otherwise specified HCC (NOS-HCC). We compared the imaging features and outcome of resected HCC containing fat on pathology including SH-HCC (> 50% steatohepatitic component), NOS-HCC with < 50% steatohepatitic component (SH-NOS-HCC), and fatty NOS-HCC (no steatohepatitic component).

Bending Relaxation of H O by Collision with Para- and Ortho-H.

We extend our recent theoretical work on the bending relaxation of H O in collisions with H by including the three water modes of vibration coupled with rotation, as well as the rotation of H . Our full quantum close-coupling method (excluding the H vibration) is combined with a high-accuracy nine-dimensional potential energy surface. The collisions of para-H O and ortho-H O with the two spin modifications of H are considered and compared for several initial states of H O.

A statistical investigation of the rate constants for the H + HD reaction at temperatures of astrophysical interest.

The H + HD(v, j) reaction has been investigated in detail by means of a statistical quantum method. State-to-state cross sections and rate constants for transitions between reactants and rovibrational states HD(v', j') of the product arrangement with energies below 0.9 eV collision energy [that is, HD(v = 0, j = 0-11) and HD(v = 1, j = 0-6)] have been calculated.

Near-Threshold and Resonance Effects in Rotationally Inelastic Scattering of DO with -H.

We present a combined experimental and theoretical study on the rotationally inelastic scattering of heavy water, DO, with -H. Crossed-molecular beam measurements are performed in the collision energy range between 10 and 100 cm, corresponding to the near-threshold regime in which scattering resonances are most pronounced. State-to-state excitation cross-sections are obtained by probing three low-lying rotational levels of DO using the REMPI technique.

Rate constants for the H + H reaction from 5 K to 3000 K with a statistical quantum method.

An exhaustive investigation of state-to-state H + H(v, j) → H + H(v', j') transitions for rovibrational levels of molecular hydrogen below 1.3 eV from the bottom of the H well is carried out by means of a statistical quantum method, which assumes the complex-forming nature of the process. Integral cross sections for transitions involving states H(v = 0, j = 0-12), H(v = 1, j = 0-8), and H(v = 2, j = 0-3) are obtained for collision energies within a range of E = 10 eV and E = 2 eV.

Potential energy surface and bound states of the HO-HF complex.

We present the first global five-dimensional potential energy surface for the HO-HF dimer, a prototypical hydrogen bonded complex. Large scale ab initio calculations were carried out using the explicitly correlated coupled cluster approach with single- and double-excitations together with non-iterative perturbative treatment of triple excitations with the augmented correlation-consistent triple zeta basis sets, in which the water and hydrogen fluoride monomers were frozen at their vibrationally averaged geometries. The ab initio data points were fitted to obtain a global potential energy surface for the complex.

Ammonium salts are a reservoir of nitrogen on a cometary nucleus and possibly on some asteroids.

The measured nitrogen-to-carbon ratio in comets is lower than for the Sun, a discrepancy which could be alleviated if there is an unknown reservoir of nitrogen in comets. The nucleus of comet 67P/Churyumov-Gerasimenko exhibits an unidentified broad spectral reflectance feature around 3.2 micrometers, which is ubiquitous across its surface.

Low-Energy Water-Hydrogen Inelastic Collisions.

New molecular beam scattering experiments are reported for the water-hydrogen system. Integral cross sections of the first rotational excitations of - and -HO by inelastic collisions with -H were determined by crossing a beam of HO seeded in He with a beam of H. HO and H were cooled in the supersonic expansion down to their lowest rotational levels.

Rigid-Bender Close-Coupling Treatment of the Inelastic Collisions of HO with -H.

We present a new method taking explicitly into account the coupling between rotation and bending of a nonlinear triatomic molecule colliding with an atom. This approach based on a rigid-bender treatment of the triatomic molecule was originally developed for the case of triatomic molecule linear at equilibrium. It is here extended to the case of a colliding bent triatomic molecule at equilibrium and applied to the case of the -H + HO inelastic collision using a new HO--H adiabatically reduced 4D potential.

Collisional Excitation and Weak Maser Action of Interstellar Methanimine.

The inelastic cross sections and rate coefficients for the rotational excitation of methanimine (CHNH) by cold H have been determined quantum mechanically based on a new highly correlated five-dimensional potential energy surface. This surface was fitted to more than 60 000 ab initio points with a root-mean-square error of ∼1-2 cm in the region of the potential well whose depth is -374.0 cm.

Uncontrolled donation after circulatory death: comparison of two kidney preservation protocols on graft outcomes.

Background: Kidney transplantation following uncontrolled donation after circulatory death (uDCD) presents a high risk of delayed graft function due to prolonged warm ischemia time. In order to minimise the effects of ischemia/reperfusion injury during warm ischemia, normothermic recirculation recently replaced in situ perfusion prior to implantation in several institutions. The aim of this study was to compare these preservation methods on kidney graft outcomes.

Relaxation before Debriefing during High-fidelity Simulation Improves Memory Retention of Residents at Three Months: A Prospective Randomized Controlled Study.

Background: High-fidelity simulation is known to improve participant learning and behavioral performance. Simulation scenarios generate stress that affects memory retention and may impact future performance. The authors hypothesized that more participants would recall three or more critical key messages at three months when a relaxation break was performed before debriefing of critical event scenarios.

Hypothermic pulsatile preservation of kidneys from uncontrolled deceased donors after cardiac arrest - a retrospective study.

Kidneys from uncontrolled donors after cardiac arrest (uDCD) suffer from a period of warm ischemia between cardiac arrest and cold flushing. Aim of the study was to evaluate renal outcomes of uDCD kidneys selected on the basis of renal Resistance Index (RI) and its influence on graft function and survival. The study included 44 kidneys procured from 26 uDCD starting 1.

[Recommendations for the organ donation from patients with brain or medullary primitive tumors on behalf of the Association of the Neuro-oncologists of French Expression (ANOCEF) and the Club of Neuro-oncology of the French Society of Neurosurgery].

Requests of organs to be transplanted increase. As a matter of urgency, it is not always easy to decide if a patient carrier of a brain tumor can be candidate in the donation. After a review of the literature, the members of the Association of the Neuro-oncologists of French Expression (ANOCEF) and the Club of Neuro-oncology of the French Society of Neurosurgery propose consensual recommendations in case of donor carrier of primitive tumor intra-cranial or intra-medullary.

Rotational excitation of the interstellar NH radical by H.

We present quantum close-coupling calculations for the rotational excitation of the interstellar amidogen radical NH due to collisions with H molecules. The calculations are based on a recent, high-accuracy full-dimensional NH potential energy surface adapted for rigid-rotor scattering calculations. The collisional cross section calculations are performed for all transitions among the first 15 energy levels of both ortho- and para-NH and for total energies up to 1500 cm.

On the importance of full-dimensionality in low-energy molecular scattering calculations.

Scattering of H2 on CO is of great importance in astrophysics and also is a benchmark system for comparing theory to experiment. We present here a new 6-dimensional potential energy surface for the ground electronic state of H2-CO with an estimated uncertainty of about 0.6 cm(-1) in the global minimum region, several times smaller than achieved earlier.

Spin-orbit quenching of the C+(2P) ion by collisions with para- and ortho-H2.

Spin-orbit (de-)excitation of C(+)((2)P) by collisions with H2, a key process for astrochemistry, is investigated. Quantum-mechanical calculations of collisions between C(+) ions and para- and ortho-H2 have been performed in order to determine the cross section for the C(+) (2)P3∕2 → (2)P1∕2 fine-structure transition at low and intermediate energies. The calculation are based on new ab initio potential energy surfaces obtained using the multireference configuration interaction method.