Frequency dependence of magnetothermal properties for magnetic fluid and magnetically functionalized implants

Heating of the magnetic nanoparticles in AC magnetic field is the effect promising for application in medicine. The mechanisms of heating in AC-magnetic field implies nontrivial dependence of the power dissipated by magnetic nanoparticles on frequency. With the use of a reconfigurable experimental setup, this frequency-dependent magnetic heating was measured on two characteristic examples: the magnetite nanoparticles conventionally used in medicine and polymer coating with micrometer sized magnetite particles. The saturation of the heating power with frequency is shown that is more pronounced for the second case of microparticles

Registration of atmospheric neutrinos with the Baikal neutrino telescope

We present first neutrino induced events observed with a deep underwater neutrino telescope. Data from 70 days effective life time of the BAIKAL prototype telescope NT-96 have been analyzed with two different methods. With the standard track reconstruction method, 9 clear upward muon candidates have been identified, in good agreement with 8.7 events expected from Monte Carlo calculations for atmospheric neutrinos. The second analysis is tailored to muons coming from close to the opposite zenith. It yields 4 events, compared to 3.5 from Monte Carlo expectations. From this we derive a 90 % upper flux limit of 1.1 * 10^-13 cm^-2 sec^-1 for muons in excess of those expected from atmospheric neutrinos with zenith angle > 150 degrees and energy > 10GeV.Comment: 20 pages, 11 figure

The Lake Baikal neutrino experiment

We rewiew the present status of the Baikal Neutrino Project and present the results of a search for high energy neutrinos with the detector intermediate stage NT-96.Comment: 3 pages, 2 figures, to appear in the Proceedings of Sixth International Workshop on Topics in Astroparticle and Underground Physics (TAUP99), September 6-10, 1999, Pais, Franc

Status of the Lake Baikal Experiment

We review the present status of the Baikal Underwater Neutrino Experiment and report on neutrino events recorded with the detector stages NT-36 and NT-96.Comment: 5 pages, 4 PostScript figures, uses here.sty and mine.sty, submitted to the Proc. of 5th Int. Workshop on Topics in Astroparticle and Underground Physics (LNGS INFN, Assergi, September 7-11, 1997

The Baikal Deep Underwater Neutrino Experiment: Results, Status, Future

We review the present status of the Baikal Underwater Neutrino Experiment and present results obtained with the various stages of the stepwise increasing detector: NT-36 (1993-95), NT-72 (1995-96) and NT-96 (1996-97). Results cover atmospheric muons, first clear neutrino events, search for neutrinos from WIMP annihilation in the center of the Earth, search for magnetic monopoles, and -- far from astroparticle physics -- limnology.Comment: Talk given at the Int. School on Nuclear Physics, Erice, Sept.199

Secondary prevention of stroke in atrial fibrillation, use of apixaban: ARISTOTLE, AVERROES studies

Ischemic stroke (IS) prevention in non-valvular atrial fibrillation (NVAF) patients who already had IS or Transient Ischemic Attack (TIA) is the actual problem of up-to-date neurology. The article analyses methods of IS secondary prevention in AF, particularly usage of vitamin Kantagonist – warfarin and new oral anticoagulants: inhibitors of Xa factor (apixaban, rivaroxaban) and direct thrombin inhibiror – dabigatran.Presented results ARISTOTLE study, where have defined preference apixaban vs warfarin, and AVEEROES study, where have shown preference apixaban vs ASA in AF patients. It was noted that apixaban demonstrated superiority vs warfarin in all of the 3 key outcomes:stroke/systemic embolism prevention, including recurrent, major bleeding reducing, reduction in all-cause mortality. Optimization of secondary stroke prevention in AF patients can lead to substantial reduction of morbidity and mortality in our country

Markers of early target-organ brain damage in essential arterial hypertension: the search continues. Possibilities of diffusion tensor magnetic resonance imaging

The article touches upon the issue of brain as an end-organ target of essential arterial hypertension (AH). The article gives current information about the possibilities and potential clinical application of diffusion-tensor magnetic resonance imaging for the earliest assessment of white matter damage in patients with essential AH. Dataare presented upon the reduction of fractional anisotropy in hypertensive patients and its correlation with blood pressure level