Fukushima plutonium effect and blow-up regimes in neutron-multiplying media

It is shown that the capture and fission cross-sections of 238U and 239Pu increase with temperature within 1000-3000 K range, in contrast to those of 235U, that under certain conditions may lead to the so-called blow-up modes, stimulating the anomalous neutron flux and nuclear fuel temperature growth. Some features of the blow-up regimes in neutron-multiplying media are discussed.Comment: 15 pages, 8 figures. (v2: numerous corrections and style improvements). arXiv admin note: substantial text overlap with arXiv:1207.369

On some fundamental peculiarities of the traveling wave reactor

On the basis of the condition for nuclear burning wave existence in the neutron-multiplicating media (U-Pu and Th-U cycles) we show the possibility of surmounting the so-called dpa-parameter problem, and suggest an algorithm of the optimal nuclear burning wave mode adjustment, which is supposed to yield the wave parameters (fluence/neutron flux, width and speed of nuclear burning wave) that satisfy the dpa-condition associated with the tolerable level of the reactor materials radioactive stability, in particular that of the cladding materials. It is shown for the first time that the capture and fission cross-sections of $^{238}$U and $^{239}$Pu increase with temperature within 1000-3000K range, which under certain conditions may lead to a global loss of the nuclear burning wave stability. Some variants of the possible stability loss due to the so-called blow-up modes (anomalous nuclear fuel temperature and neutron flow evolution) are discussed and are found to possibly become a reason for a trivial violation of the traveling wave reactor internal safety.Comment: 44 pages, 19 figures, 2 table

Mechanism of Deep-focus Earthquakes Anomalous Statistics

Analyzing the NEIC-data we have shown that the spatial deep-focus earthquake distribution in the Earth interior over the 1993-2006 is characterized by the clearly defined periodical fine discrete structure with period L=50 km, which is solely generated by earthquakes with magnitude M 3.9 to 5.3 and only on the convergent boundary of plates. To describe the formation of this structure we used the model of complex systems by A. Volynskii and S. Bazhenov. The key property of this model consists in the presence of a rigid coating on a soft substratum. It is shown that in subduction processes the role of a rigid coating plays the slab substance (lithosphere) and the upper mantle acts as a soft substratum. Within the framework of this model we have obtained the estimation of average values of stress in the upper mantle and Young's modulus for the oceanic slab (lithosphere) and upper mantle.Comment: 9 pages, 7 figure

KamLAND-experiment and Soliton-like Nuclear Georeactor. Part 1. Comparison of Theory with Experiment

We give an alternative description of the data produced in the KamLAND experiment, assuming the existence of a natural nuclear reactor on the boundary of the liquid and solid phases of the Earth's core. Analyzing the uncertainty of antineutrino spectrum of georeactor origin, we show that the theoretical (which takes into account the soliton-like nuclear georeactor) total reactor antineutrino spectra describe with good accuracy the experimental KamLAND-data over the years of 2002-2007 and 2002-2009, respectively. At the same time the parameters of mixing ({\Delta}(m21)^2=2.5\cdot 10^-5 eV^2, tan^2{\theta}12=0.437) calculated within the framework of georeactor hypothesis substantially differ from the parameters of mixing ({\Delta}(m21)^2=7.49\cdot 10^-5 eV^2, tan^2{\theta}12=0.436) obtained in KamLAND-experiment for total exposure over the period of 2002-2009. By traingulation of KamLAND and Borexino data we have constructed the coordinate location of soliton-like nuclear georeactors on the boundary of the liquid and solid phases of the Earth core. Based on the necessary condition of full synchronization of geological (magnetic) time scale and time evolution of heat power of nuclear georeactor, which plays the role of energy source of the Earth magnetic field, and also the strong negative correlation between magnetic field of the solar tachocline zone and magnetic field of the Earth liquid core (Y-component) we have obtain the estimation of nuclear georeactor average heat power ~30 TW over the years 2002-2009.Comment: 50 pages; 17 figures; 1 table. A substantially revised, corrected and enhanced editio

ОТНОШЕНИЕ НАСЕЛЕНИЯ ТЮМЕНСКОЙ ОБЛАСТИ К ПОСЛЕДСТВИЯМ ПРОВЕДЕНИЯ МИРНОГО ЯДЕРНОГО ВЗРЫВА «ТАВДА»

The research of radiation-hygienic situation of the region neighboring the place of peaceful nuclear explosion «Tavda» showed the absence of the release of radionuclides to the surface. There were no any publications in local massmedia for the last 5 years. The most of the respondents are not aware of this explosion. They don’t show symptoms of radio anxiety about possible consequences of this explosion. The respondents are interested in information about possible influence of radiation on their health and protective measures from radiation. The adequate Recommendations have been developed for Federal Service for Surveillance on Consumer Rights protection and Human Well-being.В результате изучения радиационно-гигиенической обстановки в месте проведения мирного ядерного взрыва «Тавда» в Тюменской области установлено отсутствие выхода радионуклидов на поверхность. Изучение информированности населения об этом взрыве показало, что за последние 5 лет какие-либо публикации об этом взрыве в местных СМИ отсутствуют, а подавляющее большинство респондентов не знает о таком событии. Анкетирование групп населения вблизи места взрыва оказало, что у респондентов нет признаков выраженной радиотревожности по поводу возможных последствий взрыва. При низком уровне радиационно-гигиенических знаний опрошенные выразили интерес к получению сведений о влиянии радиации на здоровье и о мерах защиты от радиации. Для сотрудников органов Роспотребнадзора разработаны рекомендации по методам информационной работы с населением

Clinical features of the course of juvenile arthritis in children

The article presents the data of a retrospective study of children n=21, with a confirmed diagnosis of juvenile rheumatoid arthritis. The authors compare the features of the clinic and the course of poly-and oligoarticular variants of arthritis. The results of the study revealed the features of the course of arthritis, depending on the type of joint damageВ статье представлены данные ретроспективного исследования детей (n=21) с подтвержденным диагнозом ювенильного ревматоидного артрита. Авторы сравнивают особенности клиники и течения поли- и олигоартикулярного вариантов артрита. По результатам исследования выявлены особенности течения артрита в зависимости от типа поражения суставо