Magnetic Nanotherapy by Magnetosensitive Nanocomplexes with Different Magnetic Properties of the Walker 256 Carcinosarcoma

The magnetic nanocomplex (MNC) comprised of Fe3O4 nanoparticles (NP) and doxorubicin (DOXO) with a saturation magnetic magnetic moment m3 = 10.5 emu/g during magnetic nanotherapy initiated greater antitumor effect than MNC with m3 = 8.55 emu/g. After treatment of Walker 256 tumor the concentration of iron ions in the blood serum of animals with tumor increased and did not depend on the magnetic properties of MNC

Analysis of the krok1 and histology subtests dynamics of students of Dnipropetrovsk medical academy

Оbjective control of the level of knowledge in medical universities is the basis for guaranteeing the quality of education. There are a lot of examples of universal systems designed to evaluate medical students in different countries, including USMLE, IFOM and others; particularly in Ukraine Krok 1 licensed exam is conducted since 2005. Results of Krok 1 are also used for ranking medical universities at the national level. The purpose of our work was to conduct a comparative analysis of the results of the licensing exam Krok 1, in particular, a histology subtest, among students of specialties 221 “Dentistry” and 222 “Medicine” and different languages of education (Ukrainian, Russian, English) in Dnipropetrovsk medical academy. We have revealed that all the analyzed contingents of students (DMA as well as Ukrainian) in the majority of observation periods from 2014 to 2019 had lower average results on histology compared to average Krok 1 results. This could be explained by low quota of histological tests for students of specialty 222 “Medicine” which is 4-6%, and absence of the threshold level for doing each particular subject. These conditions do not motivate students of the third course to recollect a complicated discipline that ended more than a year ago. Another problem is in the content of anchor questions in Krok 1 booklets: the number of such questions are distributed unevenly among booklets of different years and different languages of study. As a result, students with different languages of study are put in unequal conditions. In addition, the variation in the number of anchor tests from year to year, the lack of a declared quota of such tests disorients students and makes it difficult to develop algorithms for preparing for Krok 1

Magnetic Nanotherapy by Magnetosensitive Nanocomplexes with Different Magnetic Properties of the Walker 256 Carcinosarcoma

The magnetic nanocomplex (MNC) comprised of Fe3O4 nanoparticles (NP) and doxorubicin (DOXO) with a saturation magnetic magnetic moment m3 = 10.5 emu/g during magnetic nanotherapy initiated greater antitumor effect than MNC with m3 = 8.55 emu/g. After treatment of Walker 256 tumor the concentration of iron ions in the blood serum of animals with tumor increased and did not depend on the magnetic properties of MNC

Chiral And Parity Anomalies At Finite Temperature And Density

Two closely related topological phenomena are studied at finite density and temperature. These are chiral anomaly and Chern-Simons term. By using different methods it is shown that $\mu^2 = m^2$ is the crucial point for Chern-Simons at zero temperature. So when $\mu^2 < m^2$ $\mu$--influence disappears and we get the usual Chern-Simons term. On the other hand when $\mu^2 > m^2$ the Chern-Simons term vanishes because of non-zero density of background fermions. It is occurs that the chiral anomaly doesn't depend on density and temperature. The connection between parity anomalous Chern-Simons and chiral anomaly is generalized on finite density. These results hold in any dimension as in abelian, so as in nonabelian cases

Spin asymmetry A_1^d and the spin-dependent structure function g_1^d of the deuteron at low values of x and Q^2

We present a precise measurement of the deuteron longitudinal spin asymmetry A_1^d and of the deuteron spin-dependent structure function g_1^d at Q^2 < 1 GeV^2 and 4*10^-5 < x < 2.5*10^-2 based on the data collected by the COMPASS experiment at CERN during the years 2002 and 2003. The statistical precision is tenfold better than that of the previous measurement in this region. The measured A_1^d and g_1^d are found to be consistent with zero in the whole range of x.Comment: 17 pages, 10 figure

Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering

First measurements of azimuthal asymmetries in hadron-pair production in deep-inelastic scattering of muons on transversely polarised ^6LiD (deuteron) and NH_3 (proton) targets are presented. The data were taken in the years 2002-2004 and 2007 with the COMPASS spectrometer using a muon beam of 160 GeV/c at the CERN SPS. The asymmetries provide access to the transversity distribution functions, without involving the Collins effect as in single hadron production. The sizeable asymmetries measured on the NH_ target indicate non-vanishing u-quark transversity and two-hadron interference fragmentation functions. The small asymmetries measured on the ^6LiD target can be interpreted as indication for a cancellation of u- and d-quark transversities.Comment: 13 pages, 4 figures, updated to the published versio

Gluon polarization in the nucleon from quasi-real photoproduction of high-pT hadron pairs

We present a determination of the gluon polarization Delta G/G in the nucleon, based on the helicity asymmetry of quasi-real photoproduction events, Q^2<1(GeV/c)^2, with a pair of large transverse-momentum hadrons in the final state. The data were obtained by the COMPASS experiment at CERN using a 160 GeV polarized muon beam scattered on a polarized 6-LiD target. The helicity asymmetry for the selected events is = 0.002 +- 0.019(stat.) +- 0.003(syst.). From this value, we obtain in a leading-order QCD analysis Delta G/G=0.024 +- 0.089(stat.) +- 0.057(syst.) at x_g = 0.095 and mu^2 =~ 3 (GeV}/c)^2.Comment: 10 pages, 3 figure

The Spin-dependent Structure Function of the Proton g_1^p and a Test of the Bjorken Sum Rule

The inclusive double-spin asymmetry, A_1^p, has been measured at COMPASS in deepinelastic polarised muon scattering off a large polarised NH3 target. The data, collected in the year 2007, cover the range Q2 > 1 (GeV/c)^2, 0.004 < x < 0.7 and improve the statistical precision of g_1^p(x) by a factor of two in the region x < 0.02. The new proton asymmetries are combined with those previously published for the deuteron to extract the non-singlet spin-dependent structure function g_1^NS(x,Q2). The isovector quark density, Delta_q_3(x,Q2), is evaluated from a NLO QCD fit of g_1^NS. The first moment of Delta_q3 is in good agreement with the value predicted by the Bjorken sum rule and corresponds to a ratio of the axial and vector coupling constants g_A/g_V = 1.28+-0.07(stat)+-0.10(syst).Comment: 12 pages, 5 figure

Leading order determination of the gluon polarisation from DIS events with high-p_T hadron pairs

We present a determination of the gluon polarisation Delta g/g in the nucleon, based on the longitudinal double-spin asymmetry of DIS events with a pair of large transverse-momentum hadrons in the final state. The data were obtained by the COMPASS experiment at CERN using a 160 GeV/c polarised muon beam scattering off a polarised ^6LiD target. The gluon polarisation is evaluated by a Neural Network approach for three intervals of the gluon momentum fraction x_g covering the range 0.04 < x_g < 0.27. The values obtained at leading order in QCD do not show any significant dependence on x_g. Their average is Delta g/g = 0.125 +/- 0.060 (stat.) +/- 0.063 (syst.) at x_g=0.09 and a scale of mu^2 = 3 (GeV/c)^2.Comment: 13 pages, 6 figures and 3 table

Experimental investigation of transverse spin asymmetries in muon-p SIDIS processes: Collins asymmetries

The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV positive muon beam and a transversely polarised NH_3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003<x<0.7. These new measurements confirm with higher accuracy previous measurements from the COMPASS and HERMES collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken $x$, the relative hadron energy $z$ and the hadron transverse momentum p_T^h. The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinematic variables. These studies confirm the leading-twist nature of the Collins asymmetry.Comment: 11 pages, 5 figure