The Evaluation of the Stress-strain State for the Cylinder Heads of High-powered Diesel Engines using the Multiphysics ANSYS Technology

AbstractThe researchers have built a calculation model for comparative assessments of the heat balance, heat and stress-strain state for the head and cylinder liner of forced diesel engine, which model takes into account the redistribution of the quenching fluid between the cylinder head and crankcase. Computational experiments have been performed. The trade-off approach to the design of a diesel engine cooling system has been demonstrated to find out that improved cooling of the cylinder head is accompanied by deteriorating thermal state of the crankcase and the cylinder liner

ПЕДАГОГИЧЕСКИЕ УСЛОВИЯ ПОДГОТОВКИ СТАРШЕКЛАССНИКОВ В СИСТЕМЕ ДОПОЛНИТЕЛЬНОГО ОБРАЗОВАНИЯ К ПРЫЖКАМ С ПАРАШЮТОМ

The article presents the pedagogical conditions for the preparation of high school students in the system of additional education for skydiving.В статье представлены педагогические условия подготовки старшеклассников в системе дополнительного образования к прыжкам с парашютом

Pedagogical Conditions of Training of High School Students in the System of Additional Education to Human Trails

В статье представлены педагогические условия подготовки старшеклассников в системе дополнительного образования к прыжкам с парашютом.The article presents the pedagogical conditions for the preparation of high school students in the system of additional education for skydiving

Остеомаляция у коров и ее влияние на развитие и молочную продуктивность потомства

The present study investigates the influence of bone disease in cows on their milk production and productivity of their offspring (in 3 generations). In herds with a manifestation of bone disease using oxen-improvers has no effect.В статье представлены результаты исследований влияния остеодистрофии у коров на их молочную продуктивность и продуктивность их потомства (в 3-х поколениях). В стадах с проявлением остеодистрофии использование быков-улучшателей не дает эффекта

Динамика приростов телок и показателей молочной продуктивности коров в течение лактации в зависимости от уровня космофизической активности

The questions of interrelation of animals productivity with parameters of space activity are considered. Data about rhythmicity of changes of the studied parameters depending on space activity are cited.В статье рассматриваются вопросы взаимосвязи продуктивности животных с показателями космофизической активности. Приводятся данные о ритмичности изменений изученных показателей в зависимости от космофизической активности

Продуктивность и качество продукции сельскохозяйственных животных при разной космофизической активности (космической, солнечной, магнитного поля земли, атмосферного давления). Часть 1

It is established, that a gain of heifers and fowl, a milk yield of cows, a chemical compound of milk, an egg production of hens, safety of young animals of large horned stock, fertilization of cows and heifers correlated with parameters of space activity. On the average value of a correlation coefficient makes on mass 0,24, on a milk yield 0,26, on fat 0,19, on fiber 0,18. The opportunity of the forecast of changes of efficiency of animals concerning the predicted space activity is shown.Установлено, что прирост молодняка сельскохозяйственных животных, удой коров, химический состав молока, яйценоскость кур, сохранность молодняка крупного рогатого скота, оплодотворяемость коров и телок коррелировали с показателями космофизической активности. Показана возможность прогноза динамики продуктивности животных относительно спрогнозированной космофизической активности

High-temperature quantum kinetic effect in silicon nanosandwiches

The negative- U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the electron-electron interaction. The aforesaid promotes also the creation of composite bosons and fermions by the capture of single magnetic flux quanta on the edge channels under the conditions of low sheet density of carriers, thus opening new opportunities for the registration of the quantum kinetic phenomena in weak magnetic fields at high-temperatures up to the room temperature. As a certain version noted above we present the first findings of the high temperature de Haas-van Alphen, 300 K, quantum Hall, 77 K, effects as well as quantum conductance staircase in the silicon sandwich structure that represents the ultra-narrow, 2 nm, p-type quantum well (Si-QW) confined by the delta barriers heavily doped with boron on the n-type Si (100) surface

EDEPR of impurity centers embedded in silicon microcavities

We present the first findings of the new electrically-detected EPR (EDEPR) technique which reveal different shallow and deep centers without using the external cavity as well as the hf source and recorder, with measuring the only magnetoresistance of the Si-QW confined by the superconductor delta-barriers.Comment: 7 pages, 7 figure

Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

We present the results of a search for new, heavy particles that decay at a significant distance from their production point into a final state containing charged hadrons in association with a high-momentum muon. The search is conducted in a pp-collision data sample with a center-of-mass energy of 7 TeV and an integrated luminosity of 33 pb^-1 collected in 2010 by the ATLAS detector operating at the Large Hadron Collider. Production of such particles is expected in various scenarios of physics beyond the standard model. We observe no signal and place limits on the production cross-section of supersymmetric particles in an R-parity-violating scenario as a function of the neutralino lifetime. Limits are presented for different squark and neutralino masses, enabling extension of the limits to a variety of other models.Comment: 8 pages plus author list (20 pages total), 8 figures, 1 table, final version to appear in Physics Letters

Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment

This paper describes an analysis of the angular distribution of W->enu and W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and the missing transverse energy, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw > 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour, are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017 +/- 0.030, where the first uncertainties are statistical, and the second include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables, revised author list, matches European Journal of Physics C versio