New Integrable Multi-Component NLS Type Equations on Symmetric Spaces: Z_4 and Z_6 Reductions

The reductions of the multi-component nonlinear Schrodinger (MNLS) type models related to C.I and D.III type symmetric spaces are studied. We pay special attention to the MNLS related to the sp(4), so(10) and so(12) Lie algebras. The MNLS related to sp(4) is a three-component MNLS which finds applications to Bose-Einstein condensates. The MNLS related to so(12) and so(10) Lie algebras after convenient Z_6 or Z_4 reductions reduce to three and four-component MNLS showing new types of chi ^(3)-interactions that are integrable. We briefly explain how these new types of MNLS can be integrated by the inverse scattering method. The spectral properties of the Lax operators L and the corresponding recursion operator Lambda are outlined. Applications to spinor model of Bose-Einstein condensates are discussed.Comment: Reported to the Seventh International conference "Geometry, Integrability and Quantization", June 2--10, 2005, Varna, Bulgari

Fordy-Kulish models and spinor Bose-Einstein condensates

A three-component nonlinear Schrodinger-type model which describes spinor Bose-Einstein condensate (BEC) is considered. This model is integrable by the inverse scattering method and using Zakharov-Shabat dressing method we obtain three types of soliton solutions. The multi-component nonlinear Schrodinger type models related to symmetric spaces C.I Sp(4)/U(2) is studied.Comment: 8 pages, LaTeX, jnmp styl

The Market Reaction to Changes in Disclosure of Related-Party Transaction Rules

We examine the valuation effects of the 2004 changes in Romanian related -party transactions (RPT) disclosure rules. Because the rule changes apply only to companies listed on the Bucharest Stock Exchange (BSE), companies traded on an alternative market (RASDAQ) serve as a natural control group. We find that immediately following the adoption of the rules, BSE firms experience abnormal returns of 6% to 12% relative to matched RASDAQ firms with similar pre-reform characteristics. We also show that in the three-year period following the reforms, BSE firms experience a 20-25% increase in their Tobin’s q. Overall, the results suggest that the implementation of mandatory RPT disclosure rules can be effective in decreasing tunneling and increasing minority valuations in an emerging market

Predictors for outcome after surgery for traumatic acute subdural hematoma

Introduction: Acute traumatic subdural hematoma (ASDH) is one of the most frequent conditions in neurosurgery demanding emergency surgery. The aim of the study was to identify factors influencing outcome in patients who had surgery for evacuation of ASDH.Methods: From 2005 to 2012 eighty-five patients at age above 18 years had surgery for evacuation of ASDH. Outcome was measured according GOS at discharge and was dichotomized as “favorable outcome” (GOS 4 to 5) and “unfavorable outcome” (GOS 1 to 3). These factors were evaluated with univariate and logistic regression analysis for significance with outcome.Results: The mean age of the 85 patients was 62.7 years (SD±18.5). 45.9% patients were with favorable outcome and 54.1% had unfavorable outcome. Patients with GCS score 3-8 (54.1%) had 80.4% unfavorable outcome whereas 78.6% of patients with GCS score 13-15 (32.9%) had favorable outcome. All patients with nonreactive pupils (bilaterally or unilaterally -31.8%) had unfavorable outcome whereas patients (36.5%) with both reactive pupils (36.5%) had in 80.6% favorable outcome. All patients (40%) with Rotterdam CT scores 5 and 6 had unfavorable outcome. The factors determining outcome were admission GSC score, Rotterdam CT scores, and prothrombin time.Conclusion: Patients who have GSC score of 3, unresponsive pupil(s) or have Rotterdam CT scores 5 and 6 have little chance of survival. Patients with coagulopathy have two times more unfavorable outcome. The patients with ASDH should have surgery as soon as possible after correction of vital parameters in order to avoid deterioration which can be very rapid and irreversible

Применение обогащенной тромбоцитами плазмы с целью профилактики поздних осложнений и болевого синдрома после герниопластики

Цель. За счет применения обогащенной тромбоцитами плазмы (ОTП) снизить степень выраженности поздних осложнений у больных, оперированных по поводу инцизионных вентральных грыж. Материалы и методы. В клиническое исследование, проведенное в условиях хирургического отделения Центра реконструктивной и восстановительной медицины (Университетская клиника) Одесского национального медицинского университета с 2013 по 2019 г., включены 84 больных, оперированных по поводу послеоперационных вентральных грыж. Средний возраст больных составил (60,1 ± 7,6) года, размер грыжевых дефектов - 8,2 см, средний индекс массы тела – 31,8 кг/м2. Больным по показаниям выполнен стандартный объем оперативного вмешательства: грыжесечение, герниопластика передней брюшной стенки облегченным (80 г/м2) полипропиленовым имплантатом. Пациентам основной группы после выполнения пластики зону имплантации протеза инфильтрировали активированной аутологичной ОТП, которая была заготовлена путем двойного центрифугирования, в объеме 14 – 38 мл. Пациентам контрольной группы инфильтрацию ОТП не выполняли. Качество жизни пациентов оценивали с помощью стандартизированного опросника SF-36 до операции, а также в послеоперационном периоде. С целью дифференцирования нейропатической боли применяли опросники DN4 и ID Pain. Результаты. У пациентов обеих групп в послеоперационном периоде отмечали повышение показателей качества жизни. Статистическая достоверность различий показателей была выше у пациентов с надапоневротическим расположением протеза. Показатели физического здоровья и ассоциированные с ними показатели социальной активности, общего состояния здоровья демонстрировали значимо более высокий уровень качества жизни у пациентов основной группы. Показатель общего состояния здоровья у больных после надапоневротической герниопластики с применением ОТП был достоверно выше, чем в контрольной группе – соответственно 69,3 ± 3,8 и 59,7 ± 4,1 (p < 0,05). Выводы. Техника инфильтрации мягких тканей, контактирующих с полипропиленовым протезом, безопасна, достоверно не увеличивает риск возникновения локальных или системных осложнений. Предложенная методика за счет модификации репаративных процессов в зоне герниопластики способствует интеграции протеза, снижает риск развития и степень выраженности биомеханических нарушений, хронического болевого синдрома, что положительно сказывается на качестве жизни пациентов. Эффективность техники статистически достоверно выше у пациентов после надапоневротической герниопластики

Probing the N = 32 shell closure below the magic proton number Z = 20: Mass measurements of the exotic isotopes 52,53K

The recently confirmed neutron-shell closure at N = 32 has been investigated for the first time below the magic proton number Z = 20 with mass measurements of the exotic isotopes 52,53K, the latter being the shortest-lived nuclide investigated at the online mass spectrometer ISOLTRAP. The resulting two-neutron separation energies reveal a 3 MeV shell gap at N = 32, slightly lower than for 52Ca, highlighting the doubly-magic nature of this nuclide. Skyrme-Hartree-Fock-Boguliubov and ab initio Gorkov-Green function calculations are challenged by the new measurements but reproduce qualitatively the observed shell effect.Comment: 5 pages, 5 figure

Precision Mass Measurements of 129-131Cd and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

Masses adjacent to the classical waiting-point nuclide 130Cd have been measured by using the Penning- trap spectrometer ISOLTRAP at ISOLDE/CERN. We find a significant deviation of over 400 keV from earlier values evaluated by using nuclear beta-decay data. The new measurements show the reduction of the N = 82 shell gap below the doubly magic 132Sn. The nucleosynthesis associated with the ejected wind from type-II supernovae as well as from compact object binary mergers is studied, by using state-of-the-art hydrodynamic simulations. We find a consistent and direct impact of the newly measured masses on the calculated abundances in the A = 128 - 132 region and a reduction of the uncertainties from the precision mass input data

Studies of the Response of the Prototype CMS Hadron Calorimeter, Including Magnetic Field Effects, to Pion, Electron, and Muon Beams

We report on the response of a prototype CMS hadron calorimeter module to charged particle beams of pions, muons, and electrons with momenta up to 375 GeV/c. The data were taken at the H2 and H4 beamlines at CERN in 1995 and 1996. The prototype sampling calorimeter used copper absorber plates and scintillator tiles with wavelength shifting fibers for readout. The effects of a magnetic field of up to 3 Tesla on the response of the calorimeter to muons, electrons, and pions are presented, and the effects of an upstream lead tungstate crystal electromagnetic calorimeter on the linearity and energy resolution of the combined calorimetric system to hadrons are evaluated. The results are compared with Monte Carlo simulations and are used to optimize the choice of total absorber depth, sampling frequency, and longitudinal readout segmentation.Comment: 89 pages, 41 figures, to be published in NIM, corresponding author: P de Barbaro, [email protected]