Comparison between three-dimensional linear and nonlinear tsunami generation models

The modeling of tsunami generation is an essential phase in understanding tsunamis. For tsunamis generated by underwater earthquakes, it involves the modeling of the sea bottom motion as well as the resulting motion of the water above it. A comparison between various models for three-dimensional water motion, ranging from linear theory to fully nonlinear theory, is performed. It is found that for most events the linear theory is sufficient. However, in some cases, more sophisticated theories are needed. Moreover, it is shown that the passive approach in which the seafloor deformation is simply translated to the ocean surface is not always equivalent to the active approach in which the bottom motion is taken into account, even if the deformation is supposed to be instantaneous.Comment: 39 pages, 16 figures; Accepted to Theoretical and Computational Fluid Dynamics. Several references have been adde

ЧИСЛО ПОТЕРЯННЫХ ЛЕТ ЖИЗНИ (DALY) В РЕЗУЛЬТАТЕ ПРЕЖДЕВРЕМЕННОЙ СМЕРТНОСТИ НАСЕЛЕНИЯ ТОМСКОЙ ОБЛАСТИ В 2012 Г.

Aim: to calculate the index of years of life lost population due to premature death in the Tomsk region in 2012, and the contribution of various groups of diseases in the total indicator DALY among males and females.  Materials and methods: in the calculation of DALY used the number and the gender and age structure of the population of Tomsk region by 01.01.2012, according to Rosstat. To conduct the calculation of DALY used the methodology presented by the world Bank in the report «Investing in health» in 1993 According to the methodology, the DALY is the number of years of life of the population, lived with disability or other health problems, and lost due to premature death. Results: the total loss of DALYs in the Tomsk region by the end of 2012 amounted 112,3, per 1000 population (11,6±8,9). In the structure of DALYs by cause of death 1st place is occupied by diseases of the circulatory system, 2nd injury and poisoning, 3rd neoplasms. Conclusions: the indicator DALY in the Tomsk region are significantly lower than the Russian Federation as a whole (according to S.A. Leonov - 1.25 times, according to G. Yang - 2 times). The relatively low level of DALYs in the Tomsk region is associated with favourable compared with other regions of the age structure (younger populations). It should also be noted that more than 70% of population live in urban areas, where, as is known, the availability of medical care are higher than in rural.Цель исследования: расчет показателя потерянных лет жизни населения в результате преждевременной смерти в Томской обл. в 2012 г. и оценка вклада различных групп заболеваний в суммарный показатель DALY среди лиц мужского и женского пола.  Материалы и методы: при расчете DALY использовали численность и половозрастную структуру населения Томской обл. по состоянию на 01.01.2012 г., согласно данным Росстата. Для проведения расчета DALY использовали методологию, представленную Всемирным Банком в отчете «Инвестиции в здоровье» в 1993 г. Согласно методике, DALY представляет собой число лет жизни популяции, прожитых с инвалидностью или другими проблемами со здоровьем и потерянных в результате преждевременной смерти. Результаты: суммарные потери DALY в Томской обл. по итогам 2012 г. составили 112,3 года на 1000 населения (11,6±8,9). В структуре DALY по причинам смертности 1-е место занимают болезни системы кровообращения, 2-е травмы и отравления, 3-е новообразования. Выводы: показатель DALY в Томской обл. значительно ниже, чем по Российской Федерации в целом (по данным С.А. Леонова — в 1,25 раза, по данным G. Yang — в 2 раза). Достаточно низкий уровень DALY в Томской обл. связан с благоприятной по сравнению с другими регионами возрастной структурой (более молодое население). Также следует отметить, что более 70% населения области проживают в городской местности, где, как известно, доступность медицинской помощи выше, нежели в сельской.

Measurement of RudsR_{\text{uds}} and RR between 3.12 and 3.72 GeV at the KEDR detector

Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have measured the values of $R_{\text{uds}}$ and $R$ at seven points of the center-of-mass energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or better than $3.3\%$ at most of energy points with a systematic uncertainty of about $2.1\%$. At the moment it is the most accurate measurement of $R(s)$ in this energy range

New precise determination of the \tau lepton mass at KEDR detector

The status of the experiment on the precise $\tau$ lepton mass measurement running at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the $\tau^+\tau^-$ cross section behaviour around the production threshold. The preliminary result based on 6.7 pb$^{-1}$ of data is $m_{\tau}=1776.80^{+0.25}_{-0.23} \pm 0.15$ MeV. Using 0.8 pb$^{-1}$ of data collected at the $\psi'$ peak the preliminary result is also obtained: $\Gamma_{ee}B_{\tau\tau}(\psi') = 7.2 \pm 2.1$ eV.Comment: 6 pages, 8 figures; The 9th International Workshop on Tau-Lepton Physics, Tau0

Measurement of \Gamma_{ee}(J/\psi)*Br(J/\psi->e^+e^-) and \Gamma_{ee}(J/\psi)*Br(J/\psi->\mu^+\mu^-)

The products of the electron width of the J/\psi meson and the branching fraction of its decays to the lepton pairs were measured using data from the KEDR experiment at the VEPP-4M electron-positron collider. The results are \Gamma_{ee}(J/\psi)*Br(J/\psi->e^+e^-)=(0.3323\pm0.0064\pm0.0048) keV, \Gamma_{ee}(J/\psi)*Br(J/\psi->\mu^+\mu^-)=(0.3318\pm0.0052\pm0.0063) keV. Their combinations \Gamma_{ee}\times(\Gamma_{ee}+\Gamma_{\mu\mu})/\Gamma=(0.6641\pm0.0082\pm0.0100) keV, \Gamma_{ee}/\Gamma_{\mu\mu}=1.002\pm0.021\pm0.013 can be used to improve theaccuracy of the leptonic and full widths and test leptonic universality. Assuming e\mu universality and using the world average value of the lepton branching fraction, we also determine the leptonic \Gamma_{ll}=5.59\pm0.12 keV and total \Gamma=94.1\pm2.7 keV widths of the J/\psi meson.Comment: 7 pages, 6 figure

Search for narrow resonances in e+ e- annihilation between 1.85 and 3.1 GeV with the KEDR Detector

We report results of a search for narrow resonances in e+ e- annihilation at center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR detector at the VEPP-4M e+ e- collider. The upper limit on the leptonic width of a narrow resonance Gamma(R -> ee) Br(R -> hadr) < 120 eV has been obtained (at 90 % C.L.)

РАСПРОСТРАНЕННОСТЬ ПИЩЕВОЙ АЛЛЕРГИИ У ДЕТЕЙ В МИРОВОМ ОЧАГЕ ОПИСТОРХОЗА: ПЛАНИРОВАНИЕ И МЕТОДОЛОГИЯ ЭПИДЕМИОЛОГИЧЕСКОГО ИССЛЕДОВАНИЯ EUROPREVALL

According to numerous surveys food allergy affects up to 2–6% of population in different countries and varies due to numerous factors including the prevalence of helminths infestation. The food allergy prevalence data in Russia are based on official medical statistics. The study was performed as part of «The Prevalence, Cost and Basis of Food Allergy Across Europe» (EU funded project № FP6-2006-TTC-TU-5 Proposal 045879 EuroPrevall). The aim is to create the concept of food allergy in children in opisthorchiasis endemic area based on epidemiological study of the prevalence, risk factors and clinical features. The main objective of the study will be the working out of the food safety regulations. This article describes the study design and its methodology. Согласно данным ряда исследователей, распространенность пищевой аллергии в мире составляет 2–6%, варьируя в зависимости от многочисленных факторов, включая пораженность населения гельминтными инвазиями. Сведения о распространенности пищевой аллергии в России основаны на данных официальной статистики. Настоящая работа выполнена в рамках «Исследования распространенности, социально-экономического значения и основ пищевой аллергии в Европе» («The Prevalence, Cost and Basis of Food Allergy Across Europe»; грант VI рамочной программы Евросоюза № FP6-2006-TTC-TU-5 Proposal 045879 EuroPrevall). Цель исследования состоит в формулировке новой концепции пищевой аллергии у детей в мировом очаге описторхоза на основании эпидемиологического исследования распространенности, факторов риска, клинических особенностей болезни, а также в создании научной базы для разработки регламентов безопасности продуктов питания. Статья посвящена вопросам планирования и методологии исследования.

Measurement of main parameters of the \psi(2S) resonance

A high-precision determination of the main parameters of the \psi(2S) resonance has been performed with the KEDR detector at the VEPP-4M e^{+}e^{-} collider in three scans of the \psi(2S) -- \psi(3770) energy range. Fitting the energy dependence of the multihadron cross section in the vicinity of the \psi(2S) we obtained the mass value M = 3686.114 +- 0.007 +- 0.011 ^{+0.002}_{-0.012} MeV and the product of the electron partial width by the branching fraction into hadrons \Gamma_{ee}*B_{h} = 2.233 +- 0.015 +- 0.037 +- 0.020 keV. The third error quoted is an estimate of the model dependence of the result due to assumptions on the interference effects in the cross section of the single-photon e^{+}e^{-} annihilation to hadrons explicitly considered in this work. Implicitly, the same assumptions were employed to obtain the charmonium leptonic width and the absolute branching fractions in many experiments. Using the result presented and the world average values of the electron and hadron branching fractions, one obtains the electron partial width and the total width of the \psi(2S): \Gamma_{ee} =2.282 +- 0.015 +- 0.038 +- 0.021 keV, \Gamma = 296 +- 2 +- 8 +- 3 keV. These results are consistent with and more than two times more precise than any of the previous experiments

Precise measurements of the eta and the neutral kaon meson masses with the KLOE detector

We present precise measurements of the eta and K0 masses using the processes phi to eta gamma, eta to gamma gamma and phi to Ks Kl, Ks to pi+ pi-. The K0 mass measurement, M_K=497.583 +/- 0.005 (stat) +/- 0.020 (syst) MeV, is in acceptable agreement with the previous measurements but is more accurate. We find m(eta) = 547.874 +/- 0.007 (stat) +/- 0.031 (syst) MeV. Our value is the most accurate to date and is in agreement with two recent measurements based on eta decays, but is inconsistent, by about 10 sigma, with a measurement of comparable precision based on eta production at threshold.Comment: 15 pages, 8 figures Submitted to Physics Letters