SLOTTED SHELL RESILIENT ELEMENTS FOR DRILLING SHOCK ABSORBERS

Slotted shell resilient elements for drilling shock absorbers

The new design of a resilient element for application in drilling devices of vibration protection is presented.A cylindrical shell with a cut along its generatrix is the peculiarity of the proposed design.The presented resilient element has high loaded and damping properties upon cross dimension hard restriction condition.Besides, the design is sim

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SPECIAL FIELDS OF THE GALAXY RADIO EMISSION

The brightness temperatures of radio emission were measured with the UTR-2 low-frequency radio telescope at frequencies 12.6, 14.7, 16.7, 20 and 25 MHz for the following Galaxy regions: the North Pole, the babies area of minimum radio brightness and the anticenter region.The brightness temperature spectrums of the galactic background radiation were

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Ratification of the Marrakesh Treaty and New Opportunities for Libraries in Providing the Constitutional Rights of Persons with Visual Impairment

The article outlines the possibilities of ensuring proper access for persons with visual impairments to published works on the same terms as for persons with normal vision, provided that the countries accede to the Marrakesh Treaty.The provisions of the Marrakesh Treaty, which establish general obligations regarding restrictions under the Berne Con

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In Vivo Dosimetry for Superficial High Dose Rate Brachytherapy with Optically Stimulated Luminescence Dosimeters: A Comparison Study with Metal-Oxide-Semiconductor Field-Effect Transistors

The purpose of the study was to calibrate and commission optically-stimulated luminescence dosimeters (OSLDs) for in vivo measurements in contact-based 192Ir treatments for superficial high dose rate (HDR) brachytherapy in place of metal-oxide-semiconductor field-effect transistors (MOSFETs).Dose linearity and dose rate dependence were tested by va

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