119 research outputs found
The Effect of the Pairing Interaction on the Energies of Isobar Analog Resonances in Sb and Isospin Admixture in Sn Isotopes
In the present study, the effect of the pairing interaction and the isovector
correlation between nucleons on the properties of the isobar analog resonances
(IAR) in Sb isotopes and the isospin admixture in Sn
isotopes is investigated within the framework of the quasiparticle random phase
approximation (QRPA). The form of the interaction strength parameter is related
to the shell model potential by restoring the isotopic invariance of the
nuclear part of the total Hamiltonian. In this respect, the isospin admixtures
in the Sn isotopes are calculated, and the dependence of the
differential cross section and the volume integral for the
Sn(He,t)Sb reactions at E(He) MeV occurring by the excitation
of IAR on mass number A is examined. Our results show that the calculated value
for the isospin mixing in the Sn isotope is in good agreement with Colo
et al.'s estimates , and the obtained values for the volume integral
change within the error range of the value reported by Fujiwara et al.
(535 MeV fm). Moreover, it is concluded that although the
differential cross section of the isobar analog resonance for the (He,t)
reactions is not sensitive to pairing correlations between nucleons, a
considerable effect on the isospin admixtures in isotopes can be
seen with the presence of these correlations.Comment: 16 pages, 5 EPS figures and 2 tables, Late
Cytoplasmic Prep1 Interacts with 4EHP Inhibiting Hoxb4 Translation
embryo development. Interestingly, Prep1 contains a putative binding motif for 4EHP, which may reflect a novel unknown function. development effect. mRNA to the 5′ cap structure. This is the first demonstration that a mammalian homeodomain transcription factor regulates translation, and that this function can be possibly essential for the development of female germ cells and involved in mammalian zygote development
Methoxy polyethylene glycol epoetin beta and the treatment of anaemia in chronic heart failure
Aim. To study erythropoietic activity and safety of methoxy polyethylene glycol epoetin beta (MEB) and its effects on haemoglobin (Hb), erythropoietin, ferritin, NT-proBNP, cytokines, and chronic heart failure (CHF) symptoms and signs. Material and methods. In total, 84 patients with Functional Class (FC) II–IV (NYHA) CHF and anaemia were examined (mean age 59,7±1,6 years; 54 men and 30 women). Anaemia criteria were Hb levels <120 g/l in men and <110 g/l in women. CHF was due to coronary heart disease, CHD (post-infarction cardiosclerosis; n=40); to CHD in combination with Type 2 diabetes mellitus, DM-2 (n=10), and arterial hypertension, AH (n=14); and to the combination of CHD, AH, and DM-2 (n=10). Left ventricular ejection fraction (LVEF) in CHF patients with FC II, III, and IV wa
Mixed-ligand complexes of copper (II) with ditiolfenols and heterocyclic diamines
By the methods spectrophotometric methods was investigated complex formation of copper with 2,6-ditiolphenol and its derivatives (2,6-ditiol-4-methylphenol, 2,6-ditiol-4-ethylphenol and 2,6-ditiol-4-tert-buthylphenol) in the presence of heterocyclic diamines. As heterocyclic diamines phenantroline (Fen), batophenantroline and dipyridile were used. It was established, that mixedligand complex were formed in weak acidic medium (pHop=6,0-8,5). Maximum of light absorption observed at (=522–550 nm. Molar coefficient of light absorption was ( = (3.08–4.92)?104. The stoichiometry of complexes had been discovered using shift the equilibrium and relative yield methods. During the extraction of copper(II) complexes with ditiol-phenols with the presence of heterocyclic diamines there was discovered that there is no chlorophorm molecules in the composition of the extracted complexes. IR spectra shows that hydroxyl group is involved to the formation of a bond with the metal and that phenantroline is included in the composition of the copper complex. In the organic phase mixed-ligand complexes have the monomeric form and can’t polymerize; that fact can be proved by calculations. By dint of spectrophotometric, IR-spectroscopic, thermogravimetric experiments and some published data we were able to determine the structural formula of complexes. Also had been determined main spectrophotometric characteristics of copper(II) mixed-ligand complexes: pH of the beginning of the deposition, optimal pH, detection limit and sensivity. For separation and finding copper, we studied the effect of interfering foreign ions: alkali, alkaline earth and rare earth elements, as well as acid anions selected masking reagents. On the base of the results was offered photometric method for determination of copper in steel different trade-marks and in food. This method characterized by good reproduction (relatively standard deviation no more 0.05) and low limit of discovery
A theoretical investigation of the magnetic dipole moment of the ground- and excited-states below 600keV in well-deformed 183,185W, 185,187Re and 187,189Os
An extension of Rothe's method to non-cylindrical domains
summary:In this paper Rothe’s classical method is extended so that it can be used to solve some linear parabolic boundary value problems in non-cylindrical domains. The corresponding existence and uniqueness theorems are proved and some further results and generalizations are discussed and applied
Functional sulfur-containing compounds. Communication 7. Reactions of 2,3-epoxypropyl alkyl sulfides, sulfoxides, and sulfones with alkoxides and amines
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