Exclusive measurements of quasi-free proton scattering reactions in inverse and complete kinematics

Quasi-free scattering reactions of the type (p, 2p) were measured for the first time exclusively in complete and inverse kinematics, using a 12C beam at an energy of ~400 MeV/u as a benchmark. This new technique has been developed to study the single-particle structure of exotic nuclei in experiments with radioactive-ion beams. The outgoing pair of protons and the fragments were measured simultaneously, enabling an unambiguous identification of the reaction channels and a redundant measurement of the kinematic observables. Both valence and deeply-bound nucleon orbits are probed, including those leading to unbound states of the daughter nucleus. Exclusive (p, 2p) cross sections of 15.8(18) mb, 1.9(2) mb and 1.5(2) mb to the low-lying 0p-hole states overlapping with the ground state (3/2-) and with the bound excited states of 11B at 2.125 MeV (1/2-) and 5.02 MeV (3/2-), respectively, were determined via γ-ray spectroscopy. Particle-unstable deep-hole states, corresponding to proton removal from the 0s-orbital, were studied via the invariant-mass technique. Cross sections and momentum distributions were extracted and compared to theoretical calculations employing the eikonal formalism. The obtained results are in a good agreement with this theory and with direct-kinematics experiments. The dependence of the proton-proton scattering kinematics on the internal momentum of the struck proton and on its separation energy was investigated for the first time in inverse kinematics employing a large-acceptance measurement

Coulomb and nuclear excitations of narrow resonances in Ne-17

New experimental data for dissociation of relativistic 17Ne projectiles incident on targets of lead, carbon, and polyethylene targets at GSI are presented. Special attention is paid to the excitation and decay of narrow resonant states in 17Ne. Distributions of internal energy in the O15+p+p three-body system have been determined together with angular and partial-energy correlations between the decay products in different energy regions. The analysis was done using existing experimental data on 17Ne and its mirror nucleus 17N. The isobaric multiplet mass equation is used for assignment of observed resonances and their spins and parities. A combination of data from the heavy and light targets yielded cross sections and transition probabilities for the Coulomb excitations of the narrow resonant states. The resulting transition probabilities provide information relevant for a better understanding of the 17Ne structure

Quasi-free proton knockout from 12C on carbon target at 398MeV/u

© 2019 The Author(s) The proton-removal mechanism of the 12C→11B reaction induced on a carbon target via elementary nucleon-nucleon scattering is investigated in exclusive triple-coincidence measurements. The observed two-nucleon angular correlations are found to be consistent with quasi-free scattering of a projectile-like proton off a target-like nucleon. Exclusive cross sections for one-step pp and pn interactions are determined as σpp=17.2(12) mb and σpn=18.2(18), respectively. The extracted quasi-free component amounts up to 58(4)% of the total proton-removal cross section. The results are compared to total proton-removal cross sections obtained from the experiment and eikonal reaction theory

CHILDREN'S ARTERIAL HYPERTENSION: DRUG CHOICE. THE RESULTS OF THE PHARMACOEPIDEMIOLOGICAL STUDY RIFAGD

The multicentered pharmacoepidemiological study «Rifagd» (prevalence and pharmacotherapy of arterial hypertension in children) in 13 cities of Russia was conducted with the purpose of analyzing of pediatricians' approach to the treatment of children's arterial hypertension, including drug choice. This allowed to estimate their experience, knowledge, as well as to direct the way to improvements of quality in medical treatment of patients with arterial hypertension. The majority of pediatricians (83,1%) encounter difficulties in hypertension treatment in connection with guidelines absence (37,3%), medical practice absence (30,4%) and «absence of indications for the application of antihypertensive drugs in pediatrics» (31,9%). for arterial hypertension treatment pediatricians use AgE-inhibitors, diuretics and beta blockers.Key words: rifagd, arterial hypertension, pharmacoepidemiology, questioning of pediatricians, ace inhibitors, diuretics, beta blockers

HYPERPIESIS OF CHILDREN AND TEENAGERS: REAL PROBLEM FOR A PEDIATRICIAN

The authors have conducted multicentric epidemiological research in 13 cities of russia to examine approaches of pediatricians to diagnostics and treatment hyperpiesis in childhood, which allowed the researchers to estimate their experience and knowledge. It has turned out that most pediatricians can not apply the knowledge in hyperpiesis diagnostics due to the absence of the agebdependent cuffs to measure hyperpiesis, as well as the skills to assess the hyperpiesis measurement findings along with centile tables use. Quality improvement of hyperpiesis diagnostics in childhood is possible by means of implementation of educational programs for the pediatricians on diagnostics and treatment of children, suffering from hyperpiesis.Key words: child's hyperpiesis, epidemiology, diagnostics, children

CHILDREN'S ARTERIAL HYPERTENSION: DRUG CHOICE. THE RESULTS OF THE PHARMACOEPIDEMIOLOGICAL STUDY RIFAGD

The multicentered pharmacoepidemiological study «Rifagd» (prevalence and pharmacotherapy of arterial hypertension in children) in 13 cities of Russia was conducted with the purpose of analyzing of pediatricians' approach to the treatment of children's arterial hypertension, including drug choice. This allowed to estimate their experience, knowledge, as well as to direct the way to improvements of quality in medical treatment of patients with arterial hypertension. The majority of pediatricians (83,1%) encounter difficulties in hypertension treatment in connection with guidelines absence (37,3%), medical practice absence (30,4%) and «absence of indications for the application of antihypertensive drugs in pediatrics» (31,9%). for arterial hypertension treatment pediatricians use AgE-inhibitors, diuretics and beta blockers.Key words: rifagd, arterial hypertension, pharmacoepidemiology, questioning of pediatricians, ace inhibitors, diuretics, beta blockers

The Proterozoic evolution of northern Siberian Craton margin: a comparison of U–Pb–Hf signatures from sedimentary units of the Taimyr orogenic belt and the Siberian platform

Identifying the cratonic affinity of Neoproterozoic crust that surrounds the northern margin of the Siberian Craton (SC) is critical for determining its tectonic evolution and placing the Craton in Neoproterozoic supercontinental reconstructions. Integration of new U–Pb–Hf detrital zircon data with regional geological constraints indicates that distinct Neoproterozoic arc-related magmatic belts can be identified within the Taimyr orogen. Sedimentary rocks derived from 970 to 800 Ma arc-related suites reveal abundant Archean and Paleoproterozoic detritus, characteristic of the SC. The 720–600 Ma arc-related zircon population from the younger Cambrian sedimentary rocks is also complemented by an exotic juvenile Mesoproterozoic zircon population and erosional products of older arc-related suites. Nonetheless, numerous evidences imply that both arcs broadly reworked Siberian basement components. We suggest that the early Neoproterozoic (ca. 970–800 Ma) arc system of the Taimyr orogen evolved on the active margin of the SC and probably extended along the periphery of Rodinia into Valhalla orogen of NE Laurentia. We also suggest the late Neoproterozoic (750–550 Ma) arc system could have been part of the Timanian orogen, which linked Siberia and Baltica at the Precambrian/Phanerozoic transition

АРТЕРИАЛЬНАЯ ГИПЕРТЕНЗИЯ ДЕТСКОГО ВОЗРАСТА: ВЫБОР ЛЕКАРСТВЕННЫХ СРЕДСТВ. РЕЗУЛЬТАТЫ ФАРМАКОЭПИДЕМИОЛОГИЧЕСКОГО ИССЛЕДОВАНИЯ «РИФАГД»

The multicentered pharmacoepidemiological study «Rifagd» (prevalence and pharmacotherapy of arterial hypertension in children) in 13 cities of Russia was conducted with the purpose of analyzing of pediatricians' approach to the treatment of children's arterial hypertension, including drug choice. This allowed to estimate their experience, knowledge, as well as to direct the way to improvements of quality in medical treatment of patients with arterial hypertension. The majority of pediatricians (83,1%) encounter difficulties in hypertension treatment in connection with guidelines absence (37,3%), medical practice absence (30,4%) and «absence of indications for the application of antihypertensive drugs in pediatrics» (31,9%). for arterial hypertension treatment pediatricians use AgE-inhibitors, diuretics and beta blockers.Key words: rifagd, arterial hypertension, pharmacoepidemiology, questioning of pediatricians, ace inhibitors, diuretics, beta blockers.Проведено многоцентровое фармакоэпидемиологическое исследование РИФАГД в 13 городах России с целью изучения подходов врачей педиатров к терапии артериальной гипертензии в детском возрасте, в том числе выбору лекарственных средств, что позволило оценить их опыт, знания, а также наметить пути улучшения качества помощи пациентам с артериальной гипертензией. Большинство педиатров (83,1%) испытывают трудности при лечении артериальной гипертензии в связи с отсутствием методических рекомендаций (37,3%), практики лечения (30,4%) и показаний для применения антигипертензивных препаратов в педиатрии (31,9%). Для лечения артериальной гипертензии педиатры применяют ингибиторы ангиотензин-превращающего фермента, диуретики и β-адреноблокаторы. Ключевые слова: РИФАГД, артериальная гипертензия, фармакоэпидемиология, анкетирование врачей педиатров, ингибиторы ангиотензин-превращающего фермента, диуретики, β-адреноблокаторы.(Педиатрическая фармакология. – 2006; 3(3): 10-15