Magnetism of an excited self-conjugate nucleus: precise measurement of the g factor of the 2(1)(+) state in (24)Mg.

A precise measurement of the g factor of the first-excited state in the self-conjugate (N=Z) nucleus (24)Mg is performed by a new time-differential recoil-in-vacuum method based on the hyperfine field of hydrogenlike ions. Theory predicts that the g factors of such states, in which protons and neutrons occupy the same orbits, should depart from 0.5 by a few percent due to configuration mixing and meson-exchange effects. The experimental result, g=0.538±0.013, is in excellent agreement with recent shell-model calculations and shows a departure from 0.5 by almost 3 standard deviations, thus achieving, for the first time, the precision and accuracy needed to test theory. Proof of the new method opens the way for wide applications including measurements of the magnetism of excited states of exotic nuclei produced as radioactive beams.

[Blast stage in chronic myeloleukemia--diagnostic and therapeutic problems]. / Blasten stadii pri khronichnata mielolevkoza--diagnostichni i terapevtichni problemi.

The data are reported from the study on 34 patients with chronic myeloleukosis (ChML), blast stage (BS). The early progress of BS is stressed upon--in 41% of the patients during the first year after making the diagnosis. A juxtaposition is made between some clinical and laboratory indices and the BS progress as well as with life span. Some criteria are presented that could aid the differentiation of BS from a recurrence of ChML. The unsatisfactory results from BS treatment are also stressed upon in spite of the achievements during the last several years. One of the patients was with twice overcome BS, with a duration of the second remission of 8 months.

[Lymphocyte changes in chronic posthemorrhagic iron-deficiency anemia]. / Promeni v limfotsitite pri khronicha sledkruvoizlivna zheliazo-defitsitna anemiia.

Ninety patients with chronic posthemorrhagic iron deficiency anemia were examined, looking for morphological and functional deviations in peripheral blood lymphocytes. Reduced blast transformation of lymphocytes was found under the effect of phytohemagglutinin and as improvement - by the treatment with iron-containing preparations. No reduction was established of T-lymphocytes, immunoglobulins as well as a change in the ultrastructure of lymphocyte mitochondria. The role of iron deficiency is discussed in connection with the phenomena observed as well as the enhanced susceptibility to acute respiratory infections.