Method for the Determination of Magnetoelastic and Elastic Constants of Weak Ferromagnets

Excitation of flexible vibrations in weak ferromagnets plaes in an external magnetic field is experimentally investigated. It is proposed to use dependence of resonant frequencies on a magnetic field for tunable source of flexural vibrations. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3367

Interaction of Lamb Waves with Domain Walls in an Iron Borate Plate

This work presents the calculation results of the Lamb wave spectra in a plate of iron borate. Experimental data on how flexural vibrations in a borate plate influence its domain structure are provided

Numerical characteristics of image geometric deformation parameters estimates convergence at stochastic gradient estimation

Several approaches to the numerical description of image geometric deformations parameters estimates behavior at iterations of non-identification relay stochastic gradient estimation are considered. The probability density of the Euclidean mismatch distance of deformation parameters estimates vector is chosen as an argument of the characteristics forming the numerical values. It made it possible to ensure invariance to the set of parameters of the used inter-frame geometric deformations model. The mathematical expectation, the probability of exceeding a given threshold value of the convergence rate and the confidence interval of the Euclidean mismatch distance were investigated as characteristics. Probabilistic mathematical modeling is applied to calculate the probability density of the Euclidean mismatch distance. Examples of calculation are presented.The reported study was funded by RFBR and Government of Ulyanovsk Region according to the research project № 18-01-730006 and № 18-41-730009

КЛИНИКО-ЭКСПЕРИМЕНАЛЬНЫЕ ИССЛЕДОВАНИЯ ИММУНОМОДУЛИРУЮЩЕГО ЭФФЕКТА АМИСУЛЬПРИДА

Study of immunomodulatory effect of atypical antipsychotic amisulpride has revealed a positive clinical effect after 6-week therapy of schizophrenic patients regarding both positive and negative symptoms. A decrease in activity of humoral immunity factors (В lymphocytes, immunoglobulins, HLA-DR+-cells) identified among schizophrenic patients in the process of amisulpride therapy can be attributed to a positive effect optimizing the ratio Th1/Th2. Amisulpride when used under experimental conditions produced a suppression of IgM-immune response in mice of the C57BL/6J strain. This effect was more expressed in animals with aggressive behavior pattern. Изучение иммуномодулирующего эффекта атипичного антипсихотика амисульприда в клинике продемонстрировало положительный клинический эффект в динамике 6-недельной терапии больных шизофренией в отношении как позитивной, так и негативной симптоматики. Установленное снижение активности факторов гуморального иммунитета (В лимфоцитов, иммуноглобулинов, клеток HLA-DR+) у больных шизофренией в процессе терапии амисульпридом можно отнести к благоприятному эффекту, оптимизирующему соотношение Т лимфоцитов-хелперов Tх1/Tх2. Использование амисульприда в экспериментальных условиях привело к угнетению IgM-иммунного ответа у мышей линии С57BL/6J, наиболее выраженное при проявлении у них агрессивного типа поведения.

Profitability of mineral fertilizers for perennial legume-cereal grasses on anthropogenic-transformed peat soil

Phosphoric and potash fertilizers added to anthropogenic-transformed peat soils in P90K120 doses for perennial legume-cereal grasses provide profitability of milk industry of 95 %, if the dose is increased up to 180 kg per ha, the profitability of 108 % will be obtained. Dose of K240reduces profitability to 107 %, despite the increase in benefit in relation to P90K180 variant. Fractional application of N60 (30 kg per ha nitrogen fertilizer under the first and second cuttings) on P90K180 base is recognizes as more profitable method for perennial legume-cereal grasses which are used in milk industry. Benefit is 1172.84 rub. per ha (591.1 U.S. dollar per ha), profitability of production is 119 %.На антропогенно-преобразованной торфяной почве применение фосфорных и калийных удобрений в дозах P90K120 под многолетние бобово-злаковые травы обеспечивает рентабельность производства молока на уровне 95 %, а при повышении дозы калия до 180 кг/га – до 108 %. Внесение К240 приводит к снижению рентабельности до 107 %, несмотря на увеличение прибыли по отношению к варианту P90K180. Экономически наиболее эффективным под многолетние бобово-злаковые травы при использовании их для производства молока является дробное внесение N60( по 30 кг/га азота удобрений под первый и второй укосы) на фоне P90K180. Прибыль составляет 1172,84 руб./га (591,1 долл. США/га), и рентабельность производства – 119 %

Quartz accelerator of charged particles

Results of first experiments with piezoelectric accelerator built on quartz crystals as piezoelectric elements are presented. Accelerating voltage in such quartz accelerator is produced at compression in vacuum of quartz crystals along polar axis. The construction of the quartz accelerator and results of measurements the spectra of X-ray radiation which is produced by electrons accelerated in such accelerator are described. Accelerating voltage in quartz accelerator observed in the experiment is discussed.Представлено результати перших експериментів з п'єзоелектричним прискорювачем, побудованим на кристалах кварцу в якості п'єзоелементів. Прискорювальна напруга в такому кварцовому прискорювачі створюється при стисненні у вакуумі кристалів кварцу уздовж полярної осі. Описанi конструкція кварцового прискорювача і результати вимірювань спектрів рентгенівського випромінювання, яке виробляється електронами, прискореними в такому прискорювачі. Обговорюється прискорююча напруга в кварцовому прискорювачі, що спостерігається в експерименті.Представлены результаты первых экспериментов с пьезоэлектрическим ускорителем, построенным на кристаллах кварца в качестве пьезоэлементов. Ускоряющее напряжение в таком кварцевом ускорителе создается при сжатии в вакууме кристаллов кварца вдоль полярной оси. Описаны конструкция кварцевого ускорителя и результаты измерений спектров рентгеновского излучения, которое производится электронами, ускоренными в таком ускорителе. Обсуждается ускоряющее напряжение в кварцевом ускорителе, наблюдаемое в эксперименте

Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at sqrt(s) = 7 TeV

Results are presented from a search for a W' boson using a dataset corresponding to 5.0 inverse femtobarns of integrated luminosity collected during 2011 by the CMS experiment at the LHC in pp collisions at sqrt(s)=7 TeV. The W' boson is modeled as a heavy W boson, but different scenarios for the couplings to fermions are considered, involving both left-handed and right-handed chiral projections of the fermions, as well as an arbitrary mixture of the two. The search is performed in the decay channel W' to t b, leading to a final state signature with a single lepton (e, mu), missing transverse energy, and jets, at least one of which is tagged as a b-jet. A W' boson that couples to fermions with the same coupling constant as the W, but to the right-handed rather than left-handed chiral projections, is excluded for masses below 1.85 TeV at the 95% confidence level. For the first time using LHC data, constraints on the W' gauge coupling for a set of left- and right-handed coupling combinations have been placed. These results represent a significant improvement over previously published limits.Comment: Submitted to Physics Letters B. Replaced with version publishe

Search for the standard model Higgs boson decaying into two photons in pp collisions at sqrt(s)=7 TeV

A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 inverse femtobarns. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1 sigma. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-150 GeV is estimated to be 1.8 sigma. More data are required to ascertain the origin of this excess.Comment: Submitted to Physics Letters

Measurement of the Lambda(b) cross section and the anti-Lambda(b) to Lambda(b) ratio with Lambda(b) to J/Psi Lambda decays in pp collisions at sqrt(s) = 7 TeV

The Lambda(b) differential production cross section and the cross section ratio anti-Lambda(b)/Lambda(b) are measured as functions of transverse momentum pt(Lambda(b)) and rapidity abs(y(Lambda(b))) in pp collisions at sqrt(s) = 7 TeV using data collected by the CMS experiment at the LHC. The measurements are based on Lambda(b) decays reconstructed in the exclusive final state J/Psi Lambda, with the subsequent decays J/Psi to an opposite-sign muon pair and Lambda to proton pion, using a data sample corresponding to an integrated luminosity of 1.9 inverse femtobarns. The product of the cross section times the branching ratio for Lambda(b) to J/Psi Lambda versus pt(Lambda(b)) falls faster than that of b mesons. The measured value of the cross section times the branching ratio for pt(Lambda(b)) > 10 GeV and abs(y(Lambda(b))) < 2.0 is 1.06 +/- 0.06 +/- 0.12 nb, and the integrated cross section ratio for anti-Lambda(b)/Lambda(b) is 1.02 +/- 0.07 +/- 0.09, where the uncertainties are statistical and systematic, respectively.Comment: Submitted to Physics Letters