Structure of unbound neutron-rich 9^{9}He studied using single-neutron transfer

The 8He(d,p) reaction was studied in inverse kinematics at 15.4A MeV using the MUST2 Si-CsI array in order to shed light on the level structure of 9He. The well known 16O(d,p)17O reaction, performed here in reverse kinematics, was used as a test to validate the experimental methods. The 9He missing mass spectrum was deduced from the kinetic energies and emission angles of the recoiling protons. Several structures were observed above the neutron-emission threshold and the angular distributions were used to deduce the multipolarity of the transitions. This work confirms that the ground state of 9He is located very close to the neutron threshold of 8He and supports the occurrence of parity inversion in 9He.Comment: Exp\'erience GANIL/SPIRAL1/MUST

New insight into the low-energy 9^9He spectrum

The spectrum of $^9$He was studied by means of the $^8$He($d$,$p$)$^9$He reaction at a lab energy of 25 MeV/n and small center of mass (c.m.) angles. Energy and angular correlations were obtained for the $^9$He decay products by complete kinematical reconstruction. The data do not show narrow states at $\sim$1.3 and $\sim$2.4 MeV reported before for $^9$He. The lowest resonant state of $^9$He is found at about 2 MeV with a width of $\sim$2 MeV and is identified as $1/2^-$. The observed angular correlation pattern is uniquely explained by the interference of the $1/2^-$ resonance with a virtual state $1/2^+$ (limit on the scattering length is obtained as $a > -20$ fm), and with the $5/2^+$ resonance at energy $\geq 4.2$ MeV.Comment: 5 pages, 4 figures, 2 table

Three-body correlations in direct reactions: Example of 6^{6}Be populated in (p,n)(p,n) reaction

The $^{6}$Be continuum states were populated in the charge-exchange reaction $^1$H($^{6}$Li,$^{6}$Be)$n$ collecting very high statistics data ($\sim 5 \times 10^6$ events) on the three-body $\alpha$+$p$+$p$ correlations. The $^{6}$Be excitation energy region below $\sim 3$ MeV is considered, where the data are dominated by contributions from the $0^+$ and $2^+$ states. It is demonstrated how the high-statistics few-body correlation data can be used to extract detailed information on the reaction mechanism. Such a derivation is based on the fact that highly spin-aligned states are typically populated in the direct reactions.Comment: submitted to Physical Review

10He low-lying states structure uncovered by correlations

The 0+ ground state of the 10He nucleus produced in the 3H(8He,p)10He reaction was found at about $2.1\pm0.2$ MeV (\Gamma ~ 2 MeV) above the three-body 8He+n+n breakup threshold. Angular correlations observed for 10He decay products show prominent interference patterns allowing to draw conclusions about the structure of low-energy excited states. We interpret the observed correlations as a coherent superposition of the broad 1- state having a maximum at energy 4-6 MeV and the 2+ state above 6 MeV, setting both on top of the 0+ state "tail". This anomalous level ordering indicates that the breakdown of the N=8 shell known in 12Be thus extends also to the 10He system.Comment: 5 pages, 5 figure

Therapy chronic trichomoniasis at patients with associated urogenital chlamydial infection

Present material of problem question therapy chronic trichomoniasis. Study clinical and bacteriological effectiveness basic etiotropic preparation and their combination, used in treatment patients trichomoniasis. Found that the combined application antiprotozoal drugs have a more pronounced effect on kills T. vaginalis and shortens the rehabilitation of the patient

CHLAMYDOPHILA PNEUMONIAE-ИНФЕКЦИЯ КАК ФАКТОР РИСКА РАЗВИТИЯ АТЕРОСКЛЕРОЗА (ОБЗОР ЛИТЕРАТУРЫ)

The prevalence of atherosclerosis and associated diseases and complications creates preconditions to study them in the framework of the common pathological process. This review presents the modern data on the role of Chlamydophila pneumoniae infections, as well as data about the influence of the factors of systemic and local inflammationat the infection to the development of atherosclerosis.Распространенность атеросклероза и ассоциированных с ним заболеваний и осложнений создает предпосылки к изучению их в рамках единого патологического процесса. В обзоре представлены современные сведения о роли Chlamydophila pneumoniae-инфекции, а также данные о влиянии факторов системного и локального воспаления при указанной инфекции на развитие атеросклероза

Digital receivers for low-frequency radio telescopes UTR-2, URAN, GURT

This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. Since 1998, digital receivers performing on-the-fly dynamic spectrum calculations or waveform data recording without data loss have been used at the UTR-2 radio telescope, the URAN VLBI system, and the GURT new generation radio telescope. Here we detail these receivers developed for operation in the strong interference environment that prevails in the decameter wavelength range. Data collected with these receivers allowed us to discover numerous radio astronomical objects and phenomena at low frequencies, a summary of which is also presented.Comment: 24 pages, 15 figure

ОРГАНИЗАЦИЯ СТАЦИОНАРНОЙ ПОМОЩИ В ПЕРИОД ЭПИДЕМИИ ГРИППА И ОРВИ СЕЗОНА 2016 ГОДА В ВЕЛИКОМ НОВГОРОДЕ

Analyzed organization of preventive measures and  patient  care  in  Velikiy Novgorod in  connection with  the  exceeding of the  epidemic threshold for influenza and  acute respiratory viral  infections in  2016.  The  epidemic rise  of influenza and  other  acute  respiratory viral  infections exceeded epidemiological and economic thresholds among  the cumulative population on the  territory  of the  Novgorod region started from the 3rd week 2016 (18.01.2016–24.01.2016) and continued for 4 weeks (until  mid February).  The peak  of the epidemic was passed on the 4th calendar week  of 2016, when  the weekly prevalence rate was 135,7 per 10 thousand population (8447),  the  epidemic  threshold was  exceeded in 2 times. In terms  of conversion to the  infectious diseases hospital, a multidisciplinary clinic № 2 «Central city clinical hospital» carried  out specialized medical assistance 301 the patient with  acute respiratory diseases and  influenza, 67 of which were confirmed influenza caused by the H1N1 virus, of which  28 patients would,  if hospitalized in serious  and critical condition and  needed to be held-Institute the  intensive care manual.Проанализирована организация противоэпидемических  мероприятий и  стационарной  помощи в  Великом Новгороде в  связи с превышением  эпидемического порога   по  гриппу  и  острым респираторным  вирусным инфекциям в 2016 г. Эпидемический подъем заболеваемости   гриппом и  другими острыми респираторными вирусными инфекциями с превышением эпидемических порогов  среди  совокупного  населения   на   территории  Новгородской области начался с 3-й недели 2016 г. (18.01.2016–24.01.2016) и  продолжался в  течение 4 недель  (до середины февраля). Пик эпидемии был пройден на  4-й календарной неделе 2016 г., когда  недельный показатель заболеваемости составил 135,7  на  10 тысяч населения (8447 случаев), эпидемический порог  был превышен  в 2 раза.   В условиях  перепрофилирования  в инфекционный   стационар   многопрофильной  клиникой № 2 Центральной городской клинической больницы осуществлена  специализированная   медицинская  помощь 301 пациенту с острыми респираторными вирусными инфекциями и гриппом, у 67 был подтвержден грипп, вызванный вирусом H1N1, из них 28 пациентов были госпитализированы в тяжелом и крайне тяжелом состоянии и нуждались в проведении реанимационного пособия

6He + 9Be reactions at 16.8 MeV

6 pags.; 6 figs.Reactions of a 16.8 MeV 6He beam with a 9Be target have been investigated using highly segmented detector setup covering a large solid angle. Data on elastic and quasi-free scattering, as well as two-neutron transfer, are reported. The results for elastic scattering are fairly well reproduced by a CDCC calculation, in agreement with the interpretation of a breakup effect already observed for the scattering of 6He on other light targets. Exotic quasi-free scattering of 6He on α-cluster in 9Be is clearly observed. Inclusive and coincident events were used to extract information on the two-neutron transfer reaction 9Be(6He, α)11Be. Sequential decay of the 11Be state at the excitation energy Ex = 10.6 MeV through different channels is discussed. © 2010 SIF, Springer-Verlag Berlin Heidelberg.We would like to thank the technical staff at the RNB facility at the CRC-Louvain-la-Neuve for their valuable contributions to this work.Peer Reviewe

The 6^{6}H states studied in the d(8He,α)d(^8\text{He},\alpha) reaction and evidence of extremely correlated character of the 5^{5}H ground state

The extremely neutron-rich system $^{6}$H was studied in the direct $^2\text{H}(^8\text{He},{^4\text{He}})^{6}$H transfer reaction with a 26 $A$ MeV secondary $^{8}$He beam. The measured missing mass spectrum shows a resonant state in $^{6}$H at $6.8(3)$ MeV relative to the $^3$H+$3n$ threshold. The population cross section of the presumably $p$-wave states in the energy range from 4 to 8 MeV is $d\sigma/d\Omega_{\text{c.m.}} \simeq 190(40)$ $\mu$b/sr in the angular range $5^{\circ}<\theta_{\text{c.m.}}<16^{\circ}$. The obtained missing mass spectrum is free of the $^{6}$H events below 3.5 MeV ($d\sigma/d\Omega_{\text{c.m.}} \lesssim 3$ $\mu$b/sr in the same angular range). The steep rise of the $^{6}$H missing mass spectrum at 3 MeV allows to show that $4.5(3)$ MeV is the lower limit for the possible resonant state energy in $^{6}$H tolerated by our data. According to paring energy estimates, such a $4.5(3)$ MeV resonance is a realistic candidate for the $^{6}$H ground state (g.s.). The obtained results confirm that the decay mechanism of the $^{7}$H g.s.\ (located at 2.2 MeV above the $^{3}$H+$4n$ threshold) is the ``true'' (or simultaneous) $4n$ emission. The resonance energy profiles and the momentum distributions of the sequential $^{6}$H \,\rightarrow \, ^5H(g.s.)+n\, \rightarrow \, ^3H+$3n$ decay fragments were analyzed by the theoretically-updated direct four-body-decay and sequential-emission mechanisms. The measured momentum distributions of the $^{3}$H fragments in the $^{6}$H rest frame indicate very strong ``dineutron-type'' correlations in the $^{5}$H ground state decay.Comment: 9 pages, 11 figure