Nature of isovector l-forbidden M1 transitions in light nuclei

Systematization of existing experimental data on probabilities of l-forbidden M1 transitions observed in the γ-decay of isobaric analogue resonances in odd-nuclei with A < 52 is carried out. The collective effects, connected with excitation of core-polarized states and the giant M1 resonance, are shown to contribute to the mechanism removing l-forbideness for the mentioned M1 transitions.Проведено систематику експериментальних даних про ймовірності ізовекторних l-заборонених М1-переходів, що спостерігаються при розпаді ізобар-аналогових станів у легких ядрах із непарним А. Показано, що помітний внесок у механізм зняття l-заборони для зазначених М1-переходів дають колективні ефекти, пов'язані зі збудженням станів типу поляризації остова та гігантського М1-резонансу.Проведена систематика экспериментальных данных о вероятностях изовекторных l-запрещенных М1-переходов, наблюдающихся при распаде изобар-аналоговых состояний в легких ядрах с нечетным А. Показано, что заметный вклад в механизм снятия l-запрета для указанных М1-переходов дают коллективные эффекты, обусловленные возбуждением состояний типа поляризации остова и гигантского М1-резонанса

Risk profiles and one-year outcomes of patients with newly diagnosed atrial fibrillation in India: Insights from the GARFIELD-AF Registry.

BACKGROUND: The Global Anticoagulant Registry in the FIELD-Atrial Fibrillation (GARFIELD-AF) is an ongoing prospective noninterventional registry, which is providing important information on the baseline characteristics, treatment patterns, and 1-year outcomes in patients with newly diagnosed non-valvular atrial fibrillation (NVAF). This report describes data from Indian patients recruited in this registry. METHODS AND RESULTS: A total of 52,014 patients with newly diagnosed AF were enrolled globally; of these, 1388 patients were recruited from 26 sites within India (2012-2016). In India, the mean age was 65.8 years at diagnosis of NVAF. Hypertension was the most prevalent risk factor for AF, present in 68.5% of patients from India and in 76.3% of patients globally (P < 0.001). Diabetes and coronary artery disease (CAD) were prevalent in 36.2% and 28.1% of patients as compared with global prevalence of 22.2% and 21.6%, respectively (P < 0.001 for both). Antiplatelet therapy was the most common antithrombotic treatment in India. With increasing stroke risk, however, patients were more likely to receive oral anticoagulant therapy [mainly vitamin K antagonist (VKA)], but average international normalized ratio (INR) was lower among Indian patients [median INR value 1.6 (interquartile range {IQR}: 1.3-2.3) versus 2.3 (IQR 1.8-2.8) (P < 0.001)]. Compared with other countries, patients from India had markedly higher rates of all-cause mortality [7.68 per 100 person-years (95% confidence interval 6.32-9.35) vs 4.34 (4.16-4.53), P < 0.0001], while rates of stroke/systemic embolism and major bleeding were lower after 1 year of follow-up. CONCLUSION: Compared to previously published registries from India, the GARFIELD-AF registry describes clinical profiles and outcomes in Indian patients with AF of a different etiology. The registry data show that compared to the rest of the world, Indian AF patients are younger in age and have more diabetes and CAD. Patients with a higher stroke risk are more likely to receive anticoagulation therapy with VKA but are underdosed compared with the global average in the GARFIELD-AF. CLINICAL TRIAL REGISTRATION-URL: http://www.clinicaltrials.gov. Unique identifier: NCT01090362

Construction of the attainability set of a Brockett integrator

Methods of optimal control theory are used to solve the problem of constructing attainability sets for a non-linear dynamical system known as the non-holonomic Brockett integrator. It is proved that the boundaries of attainability sets are characterized by points of optimal trajectories constructed for a control problem whose integral performance index defines the area of the figure bounded by a trajectory of motion of the controlled system. The problem is to maximize that area. This formulation is similar to that of Dido's problem in the calculus of variations, namely, to construct a figure of maximum area for a given perimeter. An algorithm is proposed for constructing optimal trajectories and their properties are investigated. The algorithm is based on results obtained by solving a special case of the optimal control problem with a closed trajectory of motion. The necessary optimality conditions of Pontryagin's Maximum Principle are verified for the optimal trajectories constructed. Analytical formulae are derived for the value function of the control problem and the necessary and sufficient conditions for optimally are verified using Subbotin's minimax inequalities for Hamilton-Jacobi equations

Resonance-like structure in ³⁶S(pγ)³⁷Cl reaction

The γ-decay of resonances forming resonance-like structure have been investigated in the ³⁶S(pγ)³⁷Cl reaction. The decay schemes have been established for the first time. The branching ratios and probabilities of direct γ-transitions have been determined. The assumption that these resonances belong basically to the states of the M1 resonance on the first excited state in ³⁷Cl has been stated. Position of the M1 resonance has been explained with the account of pairing forces.У реакції ³⁶S(pγ)³⁷Cl досліджено γ- розпад резонансів, що утворюють резонансноподібну структуру. Уперше побудовано схеми розпаду, встановлено коефіцієнти гілкування та імовірності прямих γ-переходів. Висловлено припущення про те, що ці резонанси належать в основному станам М1-резонансу на першому збудженому стані ядра ³⁷Cl. Положення М1-резонанса пояснюється з урахуванням сил спарювання.В реакции ³⁶S(pγ)³⁷Cl исследован γ-распад резонансов, образующих резонансно-подобную структуру. Впервые установлены схемы распада, определены коэффициенты ветвления и вероятности первичных γ-переходов. Высказано предположение о том, что эти резонансы принадлежат в основном состояниям М1-резонанса на первом возбужденном состоянии ядра ³⁷Cl. Положение М1-резонанса объясняется с учетом сил спаривания