755 research outputs found

    Variation of D-region nitric-oxide density with solar activity and season at the dip equator

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    To study the solar control on electron density (N sub e) in the equatorial D region, a program was initiated with Soviet collaboration in 1979. A total of 31 rockets were launched during the high solar activity period, and 47 rockets during the low solar activity period, from Thumba to measure the N sub e profiles. Analysis of the data shows that the average values of N sub e for the high solar activity period are higher by a factor of about 2 to 3 compared to the low solar activity values. It was found that a single nitric oxide density, (NO), profile cannot reproduce all the observed N sub e profiles. An attempt was made to reproduce theoretically the observed N sub e profiles by introducing variation in (NO) for the different solar activity periods and seasons

    Role of Toll-like receptors in development of postpartum endometritis

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    The aim of the study was to establish the association between expression of TLR1 (ligands - triacyl lipopeptides), TLR2 (ligands - lipopeptides, lipoteichoic acid, zymosan), and TLR 5 (ligand - flagellin) of cervical epithelial cells in vivo and development of postpartum endometritis in women with high infection riskyesBelgorod State Universit

    The SCR flare of 16 February 1984 as recorded by the Sayan spectrograph

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    The Sayan cosmic ray (CR) spectrograph recorded an SCR flare that occurred on 16 February 1984. Data from both 1-hour and 110-minute duration measurements in 10 channels with different energy sensitivity (of neutron monitors HM-64 located at different depths in the atmosphere, and of a neutron, multiple neutron and rigid mumeson component lead-less detector) is presented. The parameters of the SCR variation spectrum are evaluated and it is shown that the recording of multiple neutrons at the same geographic point and at the same level in the atmosphere provides information similar to that from a spectrographic complex of instruments

    Dielectric responses of the layered cobalt oxysulfide Sr_2Cu_2CoO_2S_2 with CoO_2 square-planes

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    We have studied the dielectric responses of the layered cobalt oxysulfide Sr2_2Cu2_2CoO2_2S2_2 with the CoO2_2 square-planes. With decreasing temperature below the N\'eel temperature, the resistivity increases like a semiconductor, and the thermopower decreases like a metal. The dielectric constant is highly dependent on temperature, and the dielectric relaxation is systematically changed with temperature, which is strongly correlated to the magnetic states. These behaviors suggest that carriers distributed homogeneously in the paramagnetic state at high temperatures are expelled from the antiferromagnetically ordered spin domain below the N\'eel temperature.Comment: 3 pages, 4 eps figures, to be published in J. Appl. Phy

    Studying the impact of ocean eddies on the ecosystem of the Prince Edward Islands: DEIMEC ll

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    The Dynamics of Eddy Impacts on Marion’s Ecosystem Study (DEIMEC) programme was begun in 2002 with the aim of understanding the importance of the oceanic, upstream environment to the ecosystem of the Prince Edward Islands. This island group consists of two small volcanic islands and provides many opportunities for studying ecological and evolutionary processes, for monitoring ecological changes in relation to global climate change and for conserving a unique component of the planet’s biological diversity

    Cool spots on the surface of the active giant PZ Mon

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    Based on the multiband (BVRIJHKL) photometric observations of the active red giant PZ Mon performed for the first time in the winter season of 2017-2018, we have determined the main characteristics of the spotted stellar surface in a parametric three-spot model. The unspotted surface temperature is Teff=4730 K, the temperature of the cool spots is Tspot=3500 K, their relative area is about 41%, and the temperature of the warm spots is Twarm=4500 K with a maximum relative area up to 20%. The distribution of spots over the stellar surface has been modeled. The warm spots have been found to be distributed at various longitudes in the hemisphere on the side of the secondary component and are most likely a result of its influence.Comment: 5 pages, 7 figure

    Soteriological capacity of the godhead and a problem of individuals’ dependence and release according to hindu tantrism

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    The issue of the spiritual liberation in Hindu Tantrism is closely linked with an idea of the primeval source of everything, or of that supreme, absolute Reality, God. Only such a free divine Being who has never known any bondages, can provide the release for the poor samsaric souls. The participation of the Godhead in life of suffering beings looks like a manifestation of a compassion. The divine grace is expressed in sending down of the blessed power (anugraha). Tantric deities paradoxically combine in themselves truly incompatible things, for example, knowledge and illusion. However, the duality of the tantric Deity is rather apparent than real. It is a consequence of the distorted focus of perception and of the unenlightened level of a person. The great soteriological gift bestowed by God, is rarely obtained by an adept without any effort or intent on his (adept’s) part. The spiritual path unfolds as from below, i.e. from a position of the subject, and from above, i.e. from the ultimate Reality
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