СОРБЦІЯ ІОНІВ КУПРУМУ ІЗ ВОДНИХ РОЗЧИНІВ ПРИРОДНИМ КЛИНОПТИЛОЛІТОМ

It has been studied the sorption properties of the Transcarpathian clinoptilolite regarding Cu2+ ions. The maximum adsorption capacity is 40 mg/grads. It has been identified two processes that occur during the contact between clinoptilolite and an aqueous solution of copper ions: 1) chemosorption to the Cu2+ ion concentration in the solution of 0.01 g/dm3 2) ion exchange with alkali and alkaline earth metals. It is established the changing of pH value of the initial solution for 0.31 unit in the alkaline zone due to the transition of alkali and alkaline earth metals. It was determined that the bulk of clinoptilolite consists of two fractions with grains over 2 mm and 1-2 mm in diameter and small number of fractions with grains 0.5-1 mm and less than 0.5 in diameter. It was found that the capacity of absorption of clinoptilolite referring to Сu2+ ions increases with the size of sorbent grains decreasing.Вивчено сорбційні властивості закарпатського клиноптилоліту стосовно іонів Cu2+. Максимальна адсорбційна ємність становить 40 мг/гадс. Ідентифіковано 2 процеси, які відбуваються під час контакту клиноптилоліту з водним розчином іонів купруму: 1) хемосорбція до концентрації іонівCu2+у розчині 0,01г/дм3та 2) іонний обмін з лужними та лужноземельними металами. Встановлено зміну значенняpH вихідного розчину на 0,31 одиницю в лужну область,що пов’язано із переходом лужних та лужноземельних металів. Встановлено, що основну частину клиноптилоліту становили дві фракції з діаметром зерен більше 2мм та 1-2мм і незначну кількість – фракції з діаметром зерен 0,5-1 і менше 0,5мм. З’ясовано, що сорбційна ємність клиноптилоліту стосовно іонів Cu2+ збільшується зі зменшенням розміру зерен сорбенту

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

Das Beinenhaus Marsch, Op. 124

For voice and piano. Cover illustrated in color and signed by Birgit Krohn in the upper right hand corner. Plate number 796.https://scholarexchange.furman.edu/krohn-album3/1032/thumbnail.jp

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

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

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

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

Search for 2p Decay of the First Excited State of 17 Ne

Structure of nuclei located near and beyond the drip-lines plays important role in the explosive astrophysical processes. The problem of two-proton decay of the 17Ne first excited state is a good example of such situation. The two-proton radiative capture is a possible bypass of the 15O waiting point in the rp-process. The rate of this process drastically depends on the value of the weak