Search

Results: 50

• Climate change in the mountainous regions of the Republic of Tyva: The case of the Bay-Tayginsk district

  The most considerable increase in the temperature of soil surface was observed in the cold period (1,5 °С, a 53,9% rise in temperature), the smallest in August (0,3 °С, 2,1 %), whereas, in May-June, the increase was negative (–1,3 °С, 27,1 %). Major increases in air temperature take ...

• The dynamics of air temperature extrema as an indicator of climate warming in the Central Tuvan basin of the Tyva Republic

  Climate warming results in an increase of air temperatures extrema. The dynamics of anomalies in air temperature absolute maxima are described through unusual biquadrate polynomials. The minimum peak was observed in 1989—1992, afterwards a steep increase followed. The authors examine the possibility ...

• Sea surface temperature determination in the North Atlantic based on planktonic foraminifera with the help of diverse biometric methods

  This article presents the results of the reconstruction of surface temperature above the northeast part of the Iceland basin (Northeast Atlantic) for the last 300,000 years with help of the M. S. Barash method, as well as the RAM, MAT and TFT methods on the basis of the planktonic foraminifera data. The M. S. Barash ...

• Variability of climatic characteristics оver the South-East Baltic coastal waters in the early XXI century

  ... features of hydrometeorological conditions in the southeastern Baltic Sea and their trends assessment for 2005—2019 (climatic half period). The authors used the data from field observations of atmospheric pressure, wind direction and speed, and air temperature from the automatic hydrometeorological station located offshore, as well as the satellite data from the infrared and microwave (radar images) ranges to determine sea ice and sea surface temperature, respectively. The research also reveals ...

• New data on air and soil temperature in vegetation communities of the Karakum Desert

  This article offers data on the temperature of surface air and soils in the aeration zone. The author comes to the conclusion that the soil temperature in the Karakum desert is favourable for the development of tree and shrubbery species. 1. Гунин П. Д., Дарымов В. Я....

• The modelling of postmortem heat transfer and estimating the time of death

  This article analyses different mathematical models of the process of postmortem heat transfer in an adult cadaver based on postmortem temperature dynamics. A model of heat transfer in a newborn cadaver presented as a finite cylinder is examined in detail. An important factor in constructing a mathematical model of postmortem heat transfer in a newborn aimed at identifying the time of ...

• The characteristics of the energy spectrum of mixture ratio and air temperature in the troposphere of the Antarctic

  This article analyses the characteristics of the energy spectrum of mixture ratio and air temperature in the troposphere of the Antarctic obtained by Fourier analysis. Selected peaks of spectral density of mixing ratio and air temperature monthly averages are interpreted as annual and semi-annual fluctuations. The spectral density of random ...

• Oscillations, resonances and waves in a non-local medium with sources

  ... results are set out in the terms of the heat transfer theory. The non-locality of the problem is determined by the value of the fourth spatial derivative. We considered two types of volume energy sources which are alter­na­ting with respect to the temperature. For a technical source the derivative is po­sitive, since «higher» temperatures arise from the energy release. For a bio­lo­gical source the source function is negative inclined, because a biological tis­sue gives off heat in the region ...

• About a role of vegetation of deserts of Central Asia in climate change

  This article focuses on the temperature of various underlying surfaces (rubble-rock on hamadas, sand on the beds of temporary streams, plants) in the southern steppes of Mongolia. The authors present a comparative analysis of soil and plant temperature and address the issue of the ...

• The flow of gas in a cylindrical channel at a subsonic speed

  ... pressure), while the forces of gravity can be neglected. The boundary value problem is solves with the standard numerical method, the Mathcad in particular. The least squares method was used to find the empirical dependence of the heat nitrogen on the temperature. Third order polynomial approximation gives the average deviation from experimental data of less than 0.5 %. The paper also shows that with increase of the wall temperature of channel increases the required pressure at the inlet of the lance ...

• Temperature evolution of crystal structure of multiferroic Tb0.95Bi0.05MnO3

  The temperature evolution of crystal structure of multiferroic Tb0.95Bi0.05MnO3 has been studied by powder neutron diffraction in the temperature range 100—450 K. It is shown that the lattice parameters and volume expansion coefficient demonstrate anomalies ...

• Long-term forecast of water surface temperature in the southeastern part of the Pacific Ocean

  The article examines the results of use of the physical-statistical method for the forecast of seasonal trend of the sea surface temperature (SST) with the lead time of 8 months and results of statistical method of SST superlong-term forecast, lead time — 1 year. In the first case mean-squared prediction error of SST according to independent data makes 0,5 оС, in the second ...

• The ontogenesis of Mysidacea Neomysis integer Leach, 1815 dependent on the water temperature in the Vistula Lagoon of the Baltic Sea

  This article considers the impact of water temperature in the Vistula Lagoon of the Baltic Sea on Mysidacea ontogenesis, as well as their maturity rate, female fertility, reproductionrate and average energy cost of reproduction. 1. Алимов А.   Ф . Введение в продукционную ...

• Numerical simulation of forming and evolution of solitons in chain of nucleotide couples

  The Cauchy’s problem of the induced charge movement along the discrete chain of nucleotide couples in DNA is solved in the frame of Holstein’s model taking account surrounding temperature fluctuations. For the initial conditions chosen specifically the evolution of a special class of solutions of this problem related to the type of soliton is investigated. The existence of solutions in the form of solitary waves in the framework ...

• Simulating of non-stationary processes in the ionospheric plasma

  A model of distribution of concentration, velocities and temperatures of ions along a geomagnetic flux tube is considered. The model also examines the main processes of chemical kinetics, ambipolar diffusion, influence of horizontal neutral wind and plasma heating by superthermal electrons. The article presents ...

• The ecological and biological characteristics of plants in the course of forcing

  This article analyses the storage conditions for hybrid lily bulbs in the course of forcing. The authors come to the conclusion that taller plants are obtained after a three week storage at a constant low temperature. The time span between planting and flowering is 60—75 days. The optimal temperature for plant storage during forcing rages from 18 to 20 °С. 1. Интродукция растений в Главном ботаническом саду ...

• Three-dimensional computational modelling of water cooling over the coastal slope: a comparison of hydrostatic and non-hydrostatic solutions

  This article addresses the structure and dynamics of current and temperature fields in the coastal zone of a large water body generated by seasonal variations of heat-exchange conditions at the water surface. Numerical solutions of three-dimensional hydrostatic and non-hydrostatic models MIKE3-FlowModel in shallow ...

• Climate Change Impact on the Curonain Lagoon Eutrophication Level

  ... concentrations, biomass and primary production of phytoplankton in the Curonian Lagoon. The main factors affecting the level of biological production and the trophic status are determined by the comparison of hydrological and chemical indicators. Water temperature is a key environmental factor that regulates the phytoplankton production and abundance in the Curonian Lagoon. The greater seasonal rise in water temperatures in 1990-2000, presumably, a consequence of the climate change, alongside with other ...

• Multiple RuO2-chip thermometer for applications in 0,02—30 K range

  ... suggested. Thermometer saturation and thermal resistance of our sensor are measured and compared with a single-chip configuration and commercial Lakeshore ROX-102A thermometer. 1. Yeager C. J., Courts S. S. A Review of Cryogenic Thermometry and Common Temperature Sensors // IEEE sensors journal. 2001. Vol. 1, № 4. P. 352—360. 2. Courts S. S., Krause J. K. A Commercial Ruthenium Oxide Thermometer for Use to 20 Millikelvin, CP985 // Advances in Cryogenic Engineering: Transaction of the Cryogenic ...

• On the possibile contrinution of advection into the formation of CIL in the Baltic Sea

  This article offers the results of an analysis of mean annual (1952—2005) data on the temperature and salinity in the Baltic Sea published by the Institute for Baltic Sea Research (Warnemünde, Germany). The data were averaged by months, one-degree quadrants, and 10 meter-thick layers. It was found that, throughout the year, 54 % of the ...

• Investigation of dependence of temperature coefficient of linear expansion on integrated intensity of the main peak of pyroceramics substrate

  ... of studies of the parameters of optical components of a glassceramic material CO-115 by X-ray diffractometry. The possibility of technological precision quality control glassceramic parts using X-ray diffraction methods. The direct dependence of the temperature coefficient of linear expansion of the integrated intensity of the X-ray diffraction peak at the glassceramic. 1. Галявов И. Р., Патрикеев А. П., Понин О. В. и др. Интерференционные дилатометры ...

• Optimization of the thin film Heusler alloys formation technique by the method of Pulsed laser deposition

  ... Бучельников В. Д., Такаги Т. и др. Ферромагнетики с помощью формы // Успехи физических наук. 2003. Т. 173, № 6. С. 577—608. 3. Yu B. F., Gao Q., Zhang B. et al. Review on research of room temperature magnetic refrigeration// International Journal of Refrigeration. 2003. № 26. Р. 622—636. 4. GschneidnerJr K. A., Pecharsky V. K., Tsokol A. O. Recent developments in magnetocaloric materials // Rep. Prog. Phys. 2005. № 68. Р. 1479....

• Shifts of adulterations as the result of seasonal horizontal convection under the shelf plate (numerical modeling)

  ... variations which delays an establishing of a seasonal water-exchange in shallows. Convective exchange flows within the entire shelf region in seasonal circle requires 4—7 weeks to reach a quasisteady state. Formation of a linear portion on the horizontal temperature profile can be used as an indicator of the approaching of the flow to the steady state. Flushing time for the shelf zone under steady-state condition is 30 days and is only slightly influenced by the slope length. 1.  Косарев А....

• Non-contact method for measuring the specific electrical resistance of liquid metals in the high temperature range

  ... металлов и его промышленное применение. М. ; Л., 1965. 6. Макаренко И. Н., Труханова Л. Н., Филиппов Л. П. Тепловые свойс Nikishin M. A., Rumyantsev A. V., Kharyukov V. G. temperature, induction generator, electromagnetic field, skin-layer, electromotive force, specific electric resistance, power 90-96

• Modeling of H Thermal Ions Measurements onboard Charged Satellite Taking into Account Anisotropy of Temperature

  ... ionospheric ions measurements was considered in case of charged satellite. Hyperboloid device characteristics onboard Interball-2 satellite was used for mathematical model of measurements. It was shown that angular ion distribution function changed due to temperature anisotropy and it can be interprets by different ways. Positive satellite potential increases these effects. 1.   Hamelin M ., Bouhram M ., Dubouloz N . et al . Combined effects of satellite and ion detector geometries and potentials ...

• On Estimation of Rainfall Variations over the European Part of Russia

  ... measurements // Global Precipitations and Climate Change / M. Bubois, F. Désalmand (eds.). NATO ASI Series I. №   26. Berlin , 1994. P. 173—186. 15. Vose R.   S. [et al.]. The Global Historical Climatology Network: Long-Term Monthly Temperature, Precipitation, Sea Level Pressure, and Station Pressure Data // ORNL/CDIAC-53, NDP-041. Oak Ridge , 1992. Kryshnyakova O., Malinin V. rainfall, air temperature, positive trend. 64-69 10.5922/2223-2095-2010-1-9

• The Evolution, or Seasonal and Interannual Variability, of the Diurnal Variation of Hydrometeorological Fields in the Southern Baltic Sea

  We present the results of an analysis of field observations of the air temperature Ta, the dew point Td (relative humidity f), the sea-level atmospheric pressure P0, and the wind speed W. The data were obtained by a Mini- KRAMS-4 hydrometeorological facility installed within Russia’s exclusive economic zone in the southeastern ...

• Non-stationary polar wind in presence of magnetosphere convection

  Time-depended hydrodynamic model TUBE 7 is used for modeling of field-aligned motions and temperature of polar ionosphere ions taking into account magnetosphere convection. It was shown tube geometry changing have a great influence on basic parameters of polar magnetosphere thermal plasma. 1. Banks P. M., Holzer Т .   Е . The polar ...

• Decay of a weak gap and wave propagation in a nonlocal environment with a source

  ... biological tissue). The wave velocity (subsonic, sonic, super­sonic) is determined with respect to the velocity of propagating heat perturba­tions. We give examples of the exact solving the problem of disintegration of a weak discontinuity in the temperature field. This problem is set as follows. In the initial state the continuous thermal field contains a point of a weak discon­tinuity; in that point the first coordinate derivative undergoes a first-order rupture. Further the weak discontinuity ...

• An assessment of the role of green belts in creating comfortable microclimatic conditions in summer

  ... area in the left-bank part of the city of Voronezh to perform a simulation of microclimatic condi­tions in summer. The following parameters were used as background climatic conditions: the day of the summer solstice, cloudless and calm weather, air temperature 25° C. We assessed the level of thermal comfort in the current landscaping situation in the residential area, taking into account proposed cli­mate improvement initiatives, particularly, planting evergreen and decidu­ous trees. We evaluated ...

• Perspective heat supply operation buildings of multiple parameters

  A promising concept for managing the work of heat-paragraph shall ated microdistrict from several houses is described. The possibility of an adaptive optimal control of several parameters — temperature, ambient air, the dynamics of change, direction and speed of wind, sun exposure facade. 1. Вольвач А. Ю., Нестеров С. В., Толстель О. В. Нечеткое управление системой отопления ...

• Double nuclear quadrupole resonanse 14N in some nitrogen-contained matters

  ... the peculiarities of indirect observation of NQR nitrogen signals and determines the conditions for the enhancement of spin systems efficiency in static magnetic fields. It allows keeping records of the 14N spectra in the range below 1 MHz at room temperature. This method may be used for researches on low isotope matters. 1. Гречишкин В.   С., Синявский Н.   Я. Новые физические технологии: обнару­жение взрывчатых и наркотических ...

• Polarization transfer in the NV– — P1 system in diamond

  ... transfer in the NV– — P1 system in dia­mond in the vicinity of LAC is studied. A method based on a complete set of commuting observables was used. It was shown that with optical pumping of the NV– — P1 system in a field of B ≈ 511.5 G at room temperature, polariza­tion can be transferred efficiently from the electron spin of the NV center to the electron spin of the P1-center. 1. Дирак П. А. М. Принципы квантовой механики. М., 1979. 2. Ivanov A. A., Ivanov ...

• Thermal calculation of the anode of the stationary plasma engine

  ... braising in order to obtain the thermal picture of the item design. 1. Алямовский А. Руководство по эксплуатации SolidWorks/ Flow Simulation.СПб., 2012. 2. Bundesmann C., Tartz M., Neumann H. et al. In-situ temperature, erosion, beam and plasma characterisation of a SPT-100D EM1 with an advanced electric propulsion diagnostic system // IEPS-2009-141, 31st International Electric Propulsion Conferense. Michigan, 2009. Chubov P., Rumyantsev A., Kharjukov V....

• Modeling of the cathode thermal conditions

  ... calculations, the cathode thermal model and operating performances were assessed, the most efficient required cathode life time characteristics were selected, which are related to the cathode heater power and operating time with provision of emitter optimal temperature in the automatic mode and welded joints leak-tightness. It was determined that the minimum heater power for cathode start-up is 60 W, the time to prepare for a start-up is 140 sec. To improve the cathode stable operation it is recommended ...

• СA comparative analysis of bioflavonoid accumulation by Trifolium pratense in the Kaliningrad region

  This article examines the influence of environmental factors on the polyphenol accumulation of the red clover (Trifolium pratense L.) in the coastal and continental areas of the Kaliningrad region. The influence of temperature, light, and mineral nutrition factors on the accumulation activity of anthocyanins, leucoanthocyanidins, and catechins is determined. The coastal and continental area plants did not show any significant differences in the content of the examined ...

• An instability of the equatorial F-layer of the ionosphere under conditions of alternating electric fields

  ... особенности // Геомагнетизм и аэрономия. 1972. Т. 12, № 2. С. 333—335. 6. Hedin A. E., Salah J. E., Evans J. V. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 1. N2 density and temperature // J. Geophys. Res. 1977. V. 82, N. A1. P. 2139—2147. 7. Hedin A. E., Reber C. A., Newton G. P. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 2. Composition // J. Geophys.Res. 1977. V. ...

• Side resonances in diamond: influence of isotopic substitution of carbon

  .... The base of this method is the using of entangled spin states. 1. Doherty M. W., Dolde F., Fedder H. et al. Theory of the ground spin state of the NV- center in diamond // Phys. Rev. 2012. Vol. B 85. 2. Gaebel T., Domhan M., Popa I. et al. Room temperature coherent control of coupled single spin in solid // Nat. Phys. 2006. Vol. 2. P. 408. 3. Simanovskaya M., Jensen K., Jarmolova A. et al. Sidebands in optically detected magnetic resonance signals of nitrogen vacancy centers in diamond // Phys....

• Development an Rayleigh-Taylor instability in the equatorial ionosphere from stochastic ionosphere irregularities

  ... федерального университета им. И. Канта. 2014. Вып. 10. С. 30—35. 5. Hedin A. E., Salah J. E., Evans J. V. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 1. N2 density and temperature // J. Geophys. Res. 1977. Vol. 82, № A1. P. 2139–2147. 6. Hedin A. E., Reber C. A., Newton G. P. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 2. Composition // ibid. 7. Сафронов ...

• Teoretical nonstationary two-dimensional modal with altitude-longitudinal variations of ionosphere parameters

  .... Т. Глобальный долготный эффект в ночной внешней ионосфере по данным ИСЗ «Интеркосмос-19» // Препринт № 45(734). М., 1987. 5. Kohnlein W. A. Model of thermospheric temperature and composition // Planet. Space Sci. I980. Vol. 28, № 1. P. 225—243. Bogomolova M., Ishanov S., †Klevtsur S., Kozhurova A., Latyshev K. mathematical model, ionosphere, thermosphere wind 14-25

• Program realization of calculation method of radio signal attenuation in atmospheric gases for satellite communications

  ... Weintraub S. The constants in the equation for atmospheric refrac­tive index at radio frequencies // Proc. I. R. E. 1953. Vol. 41. P. 1035—1037. 9. Cadeddu M. P., Payne V. H., Clough S. A. et al. Effect of the Oxygen Line-Parame­ter Modeling on Temperature and Humidity Retrievals from Ground-Based Micro­wave Radiometers // IEEE Trans. Geosci. Remote Sens. 2007. Vol. 45, iss. 7. P. 2216—2223. Zhaharov A. I., Kuvalkin E. S. attenuation in atmospheric gases, satellite communication, radio ...

• Structural features of upwelling in South-East Baltic

  ... was produced by North-East wind with sped of about 15 m/s and duration of about 3 days. After the gale the alongshore belt of respectively cold water of width 8 km and placed apart the shore at 8 km had been formed in an area with depth of 25 m. The temperature in the upwelling core had dropped by 4 C. Changes in thermoholine structure due to the gale were simulated by 3D numerical model, based on the Princeton Ocean Model (POM). By means of numerical simulation it was conformed that features of ...

• Numerical model of development processes of small-scaled irregularities of the equatorial ionosphere

  ... modeling. Geophys. Res. Lett. 2008. Vol. 35. P. L10102. 7. Huba J. D., Krall J., Joyce G. Atomic and molecular ion dynamics during equatorial spread F // Geophys. Res. Lett. 2009. Vol. 36. P. L10106. 8. Huba J. D., Krall J., Joyce G. Ion and electron temperature evolution during equatorial spread F // Ibid. P. L15102. 9. Кащенко Н. М., Мациевский С. В. Математическое моделирование неустойчивостей экваториального F-слоя ...

• Effects of multidimensionality in theoretical models of middle-latitude F-region of ionosphere

  ... 1976. 4. Kohnlein W., Raitt W. J. ESRO-I and ESRO-4: a model of the UT effect in elec­tron density at middle latitude of the southern hemisphere. // Planet. Space Sci. 1978. V. 26, N12. P. 1179—1184. 5. Kohnlein W. A. Model of thermospheric temperature and composition // Planet. Space Sci . 1980. V .   28, N 1. P .   225—243 6. Ишанов С. А., Клевцур С. В., Латышев К. С. Алгоритм « a — b » итераций в за­дачах моделирования ...

• Seasonal dynamics of actynomyces in Kaliningrad green zone soils

  ... the soils of Kaliningrad was analysed according to the level of soil contamination. The authors proved the seasonal activity of Actinomyces in the soils of the city and identified the changes in the dependence between the number of Actinomyces and the temperature and pH of soil environment throughout seasons. The article offers a preliminary systematic analysis of Actinomyces in the city soils. 1. Медведева М.   В., Федорец Н.   Г. Комплексная оценка состояния ...

• Use of the Z-scheme in an Rayleigh-Taylor instability model

  ... ионосферной плазмы // Ионосферные исследования. 1983. № 33. С. 5—44. 6. Hedin A. E., Salah J. E., Evans J. V. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 1. N2 density and temperature // J. Geophys. Res. 1977. Vol. 82, № A1. P. 2139—2147. 7. Кольцова Э. М., Федосова Н. А., Балашкина Ю. А. Новый метод разностной аппроксимации решения для задач ...

• An influence of initial irregularities geometry on developments of the Rayleigh-Taylor instability in the equatorial F-layer of the ionosphere

  ... особенности // Геомагнетизм и аэрономия. 1972. Т. 12, № 2. С. 333—335. 8. Hedin A. E., Salah J. E., Evans J. V. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 1. N2 density and temperature // J. Geophys. Res. 1977. Vol. 82, N. A1. P. 2139–2147. 9. Hedin A. E., Reber C. A., Newton G. P. et al. A global thermospheric model based on mass spectrometer and incoherent scatter data MSIS 2. Composition // Ibid. P. 2148–2156. 10....

• An assessment of the introduction stability of woody plants in the South Baltic (Kaliningrad region)

  This article estimates the adaptive potential of woody plants to endure adverse weather conditions of winters 2009/10 and 2010/11. Special attention is paid to the temperature factor as a factor limiting the opportunities for introducing trees and shrubs. 1. Деревья и кустарники СССР / под ред. С. Я. Соколова. М. ; Л., 1949—1964.Т. 1—6. 2. Древесные растения ...

• An oscillatory excited molecular nitrogen in the ionospheric plasma

  ... Results of computing experiment indicate strong dependence of electronic concentration on high-rise distribution of nitrogen. The accounting of oscillatory excitement of molecular nitrogen leads to noticeable variations of electronic concentration and temperature at ionosphere F2 layer heights and improves a consent of results of model calculations of variations of electronic concentration with experimental data. It is shown that the contribution of small component in aeronomiche processes is essential....

• Application of means of modelling of environment Simulink in problems of the analysis of quality of systems of regulation

  Presented the results of the synthesis and analysis of the system of temperature control for the camera kiln electrode products. By using Simulink held simulation of control systems with man — operator, with a parametrically оптимизируемым regulator and neuron network predictor controller. Defined indicators ...