Laser-Induced Dissociation of the Monolayer of Adsorbed Methanol Molecules     

Varakin  V. N.  Murga  M. S. 《Astronomy Reports》2020,64(4):319-325

Astronomy Reports - Astronomical observations indicate a high abundance of methanol molecules in the gas phase of molecular-cloud dense cores, which cannot be explained by gas-phase chemical...  相似文献   

Energy and Power Spectra of the Potential Geomagnetic Field since 1840     

Starchenko  S. V.  Yakovleva  S. V. 《Geomagnetism and Aeronomy》2019,59(2):242-248

Geomagnetism and Aeronomy - It is possible that the radially independent, spatial-spectral components of the energy and power of the potential part of the main geomagnetic field were determined and...  相似文献   

The Radial Basis Functions Method for Improved Numerical Approximations of Geological Processes in Heterogeneous Systems     

Piret  Cécile  Dissanayake  Nadun  Gierke  John S.  Fornberg  Bengt 《Mathematical Geosciences》2020,52(4):477-497

Mathematical Geosciences - A robust, high order modeling approach is introduced, based on the finite difference-based radial basis functions method, for solving the groundwater flow equation in the...  相似文献   

Using Models of the Deep Structure of the Earth’s Crust and Upper Mantle Based on GOCE Gravity Data in Metallogenic Analysis     

Volkov  A. V.  Galyamov  A. L.  Savchuk  Yu. S. 《Izvestiya Atmospheric and Oceanic Physics》2020,56(12):1528-1536

Izvestiya, Atmospheric and Oceanic Physics - Gravimetric data obtained by the GOCE spacecraft contributes to the development of global models of the deep structure of the Earth’s crust and...  相似文献   

Monitoring and modelling of hydrological processes in the semiarid region of Brazil: The Cariri experimental basins     

Vajapeyam S. Srinivasan  Hugo M. de Alcântara  Carlos de O. Galvão  Ulisses A. Bezerra  John E. de Brito Leite Cunha 《水文研究》2021,35(5):e14194

Catchments have highly variable yields of runoff and soil erosion. The size, land use and the surface cover play a significant role and influence the catchment response and parameter values of simulation models. Two experimental basins—the Cariri basins—were equipped in a semi-arid region of Brazil, for obtaining runoff and sediment yield at different catchment scales, as well as, to evaluate the influence of the land use and surface cover. In the first basin, located in the municipality of Sumé, the field studies were carried out at two different scales: four micro-catchments with an area of around 0.5 ha and nine standard Wischmeier-type erosion plots of 100 m². The experimental units had varied vegetation and management. They were subjected only to natural rainfall events, and were monitored from 1982 to 1991. The total runoff and total sediment yield were determined for each of the events. The installations in the second basin, in the municipality of São João do Cariri, from 1999, include two erosion plots, three micro-catchments, and two sub-catchments of a small basin. These basins are still being monitored for runoff and sediment production. Among the micro-catchments two are nested to detect any scale effect at the micro-catchment level. Nearly 600 events of precipitation, that produced runoff in at least one of the experimental units, have been registered. These data have been used to evaluate the influence of various factors, including cultivation practices and to calibrate hydrological models for plots and micro-catchments. Parameters have been tested by means of cross validations among micro-catchments and sub-catchments. The data sets are made available to all the catchment hydrology researchers and others at https://doi.org/10.5281/zenodo.4690886 .  相似文献   

Catalog of X-Ray Active Galactic Nuclei Based on ROSAT BSC and FSC Sources     

Paronyan  G. M.  Mickaelian  A. M.  Abrahamyan  H. V.  Mikayelyan  G. A. 《Astrophysics》2021,64(3):277-292

Astrophysics - A general catalog of active galactic nuclei (AGN) has been created from identified optical sources of X-ray data from the Hamburg-ROSAT Catalog (HRC) and the Byurakan-Hamburg ROSAT...  相似文献   

Discovery of the First Interstellar Comet and the Spatial Density of Interstellar Objects in the Solar Neighborhood     

Borisov  G. V.  Shustov  B. M. 《Solar System Research》2021,55(2):124-131

Solar System Research - The discovery of the first interstellar comet 2I/Borisov confirmed the astronomers’ speculation that the passage through the solar system of relatively large objects...  相似文献   

Changes in the Period of Negative Superhumps of Type SU UMa Dwarf Novae. II. NY Her (2017 and 2020)     

Pavlenko  E. P.  Sosnovskii  A. A.  Antonyuk  K. A.  Antonyuk  O. I.  Pit’  N. V.  Kokhirova  G. I.  Rakhmatullaeva  F. J.  Baklanov  A. V. 《Astrophysics》2021,64(3):293-305

Astrophysics - Photometric studies of the type SU UMa dwarf nova NY Her were made during 2017 and 2020 at the Crimean Astrophysical Observatory and at the Sanglokh Observatory over a total of 77...  相似文献   

Effect of Stellar Wind and Poynting–Robertson Drag on Photogravitational Elliptic Restricted Three Body Problem     

A. Chakraborty  A. Narayan 《Solar System Research》2018,52(2):168-179

The existence and linear stability of the planar equilibrium points for photogravitational elliptical restricted three body problem is investigated in this paper. Assuming that the primaries, one of which is radiating are rotating in an elliptical orbit around their common center of mass. The effect of the radiation pressure, forces due to stellar wind and Poynting–Robertson drag on the dust particles are considered. The location of the five equilibrium points are found using analytical methods. It is observed that the collinear equilibrium points L₁, L₂ and L₃ do not lie on the line joining the primaries but are shifted along the y-coordinate. The instability of the libration points due to the presence of the drag forces is demonstrated by Lyapunov’s first method of stability.  相似文献   

Note on the Interpretation of Proper Mass as a Constant Lagrange Multiplier     

R. A. Krikorian 《Astrophysics》2018,61(3):370-374

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