Results 21 to 30 of about 9,909,772 (235)
Extremely Low Mass Ratio Contact Binaries. I. The First Photometric and Spectroscopic Investigations of Ten Systems [PDF]
Astronomical Journal, 2022 The photometric and spectroscopic investigations of ten contact binaries were presented for the first time. It is discovered that the mass ratios of all the ten targets are smaller than 0.15, they are extremely low mass ratio contact binaries.
K. Li +6 more
semanticscholar +1 more source
On contact numbers in random rod packings [PDF]
, 2009 Random packings of non-spherical granular particles are simulated by combining mechanical contraction and molecular dynamics, to determine contact numbers as a function of density. Particle shapes are varied from spheres to thin rods.
Luding, S., Philipse, A.P., Wouterse, A.
core +3 more sources
Influence of the cylindrical gear pairs parameters to the transverse contact ratio
Vojnotehnički Glasnik, 2014 In the field of transmission and power transformation from the power engine to the working machine, gear pairs, are mostly used in mechanical engineering due to their compactness of the structure, high reliability and capacity.
Predrag S. Dobratić +1 more
doaj +1 more source
Effects of ITO Contact Sizes on Performance of Blue Light MicroLEDs
Nanoscale Research Letters, 2022 In this study, the effect of ITO contact ratio for blue light micro-light-emitting diode (µLED) with dimensions 40 μm × 40 μm was assessed. The contact ratio from 0.2 to 0.8 was designed for the ratio of electrode area to light-emitting area.
Yu-Hsuan Hsu +4 more
doaj +1 more source
Low Mass Ratio Contact Binary V410 Aur and V776 Cas - II [PDF]
Journal of Astronomy and Space Sciences, 2005 New BVR CCD light curves of the low mass ratio contact binaries, V410 Aur and V776 Cas, were observed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Astronomical Observatory.
Kyu-Dong Oh, Chun-Hwey Kim, Ho-iL Kim
doaj +1 more source
Design of high-reduction hypoid gears meshing in plane of action
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2017 This paper proposes a method of directly designing the surface of action of a hypoid gear. In the proposed method, the characteristics of the gear meshing are independent of the manufacturing process.
Atsushi SUZUKI +2 more
doaj +1 more source
Small Mass Ratio Contact Binary GR Vir and HV Aqr [PDF]
Journal of Astronomy and Space Sciences, 2004 The absolute dimensions of low mass contact binary, GR Vir and HV Aqr were obtained using WD program from the published spectroscopic and photometric observational data.
Kyu-Dong Oh +4 more
doaj +1 more source
Chinese Journal of Mechanical Engineering, 2020 Continuously variable transmission (CVT) of noncircular gear has the technical advantages of large bearing capacity and high transmission efficiency. The key technology of CVT with noncircular gear has been broken through some countries, and is in the ...
Yanan Hu +4 more
semanticscholar +1 more source
Contact Discontinuities in Models of Contact Binaries Undergoing Thermal Relaxation Oscillations [PDF]
, 1999 In this paper we pursue the suggestion by Shu, Lubow & Anderson (1979) and Wang (1995) that contact discontinuity (DSC) may exist in the secondary in the expansion TRO (thermal relaxation oscillation) state.
Biermann P. +16 more
core +2 more sources
Mass-Ratio Determination in Contact Binaries [PDF]
Symposium - International Astronomical Union, 1974 In the wake of recent theoretical work on contact systems (e.g. Whelan, 1972; Biermann and Thomas, 1972; Lucy, 1968), it is of importance to determine fundamental data from observations. This has been done recently by several groups in analysing light curves (Mochnacki and Doughty, 1972; Hutchings and Hill, 1973; Wilson and Devinney, 1973), and it is ...
openaire +1 more source