Results 11 to 20 of about 27,669 (247)

Friction and Wear Properties of Wheat Straw Powder Third Body on Steel-Steel Friction Pair

Agriculture, 2022
Third body plant fibers have an important influence on the friction and wear properties of metal friction pairs. In this study, wheat straw powder with different particle sizes was prepared, and a pin-on-disk friction tester was employed to evaluate the ...
Chenglong Lian, Wei Zhao, Shumei Wang, Peng Zhang, Xiaoying Dong, Yongfeng Li   +5 more
doaj   +1 more source

Experimental Research on the Formation of the Third Body on the Friction Surface of Coal Cake Tamper Hammer Lifting Mechanism

Machines, 2023
A tamping machine is the key equipment of large coking coal cake forming in the steelmaking industry, where the loose coal is compacted into a coal cake by the reciprocating movement of its tamping hammer.
Lin Huang, Shengfang Zhang, Bingtao Qin, Yu Liu, Zhihua Sha   +4 more
doaj   +1 more source

HAT-P-7: A Retrograde or Polar Orbit, and a Third Body [PDF]

, 2009
We show that the exoplanet HAT-P-7b has an extremely tilted orbit, with a true angle of at least 86 degrees with respect to its parent star's equatorial plane, and a strong possibility of retrograde motion.
Albrecht, Simon, Crossfield, Ian J., Holman, Matthew J., Howard, Andrew W., Johnson, John Asher, Marcy, Geoffrey W., Winn, Joshua N.   +6 more
core   +2 more sources

Phoebe 2.0 – Triple and multiple systems [PDF]

, 2013
Some close binary formation theories require the presence of a third body so that the binary orbit can shrink over time. Tidal friction and Kozai cycles transfer energy from the binary to its companion, resulting in a close inner binary and a wide third ...
A. Prša, A. Tkachenko, Bonnell, Borkovits, Doyle, Fabrycky, Ford, G. Torres, Gies, H. Pablo, J. Giammarco, K. Conroy, K. Hambleton, K. Pavlovski, Kiseleva, P. Degroote, Rappaport, S. Bloemen, Schwarz, Steffen, Welsh   +20 more
core   +1 more source

Period Change of the Contact Binary AH Tauri [PDF]

Journal of Astronomy and Space Sciences, 2004
New BVRI photometric observations of the contact binary AH Tau were performed with the 61 cm reflector and a 2K CCD camera at the Sobaeksan Optical Astronomy Observatory during seven nights from September to December, 2001. A total of 144 times of minima
Dongjoo Lee, Chung-Uk Lee, Jae Woo Lee, Seung-Lee Kim, Kyu-Dong Oh, Chun-Hwey Kim   +5 more
doaj   +1 more source

HAT-P31bc:A Transiting, Eccentric, Hot Jupiter and a Long-Period, Massive Third Body [PDF]

, 2011
We report the discovery of HAT-P-31b, a transiting exoplanet orbiting the V = 11.660 dwarf star GSC 2099-00908. HAT-P-31b is the first planet discovered with the Hungarian-made Automated Telescope (HAT) without any follow-up photometry, demonstrating the
Andersen, J., Bakos, G. Á., Bayliss, D., Buchhave, L. A., Béky, B., Fischer, D. A., Fűrész, G., Hartman, J., Howard, A. W., Johnson, J. A., Kipping, D. M., Kiss, L. L., Kovács, Géza, Latham, D. W., Lázár, J., Marcy, G. W., Noyes, R. W., Papp, I., Quinn, S. N., Sasselov, D. D., Sato, B., Stefanik, R. P., Sári, P., Torres, G.   +23 more
core   +2 more sources

Evidence for a planetary mass third body orbiting the binary star KIC 5095269 [PDF]

, 2017
In this paper, we report the evidence for a planetary mass body orbiting the close binary star KIC 5095269. This detection arose from a search for eclipse timing variations among the more than 2,000 eclipsing binaries observed by Kepler.
Carter, B., Getley, A. K., King, R., O'Toole, S.   +3 more
core   +3 more sources

Orbital Elements Evolution Due to a Perturbing Body in an Inclined Elliptical Orbit [PDF]

Journal of Astronomy and Space Sciences, 2014
This paper intends to highlight the effect of the third-body in an inclined orbit on a spacecraft orbiting the primary mass. To achieve this goal, a new origin of coordinate is introduced in the primary and the X-axis toward the node of the spacecraft ...
W. A. Rahoma
doaj   +1 more source

Third body damage and wear in arthroplasty bearing materials: A review of laboratory methods

Biomaterials and Biosystems, 2021
Third body wear of arthroplasty bearing materials can occur when hard particles such as bone, bone cement or metal particles become trapped between the articulating surfaces. This can accelerate overall implant wear, potentially leading to early failure.
Raelene M Cowie, Louise M Jennings
doaj   +1 more source

Signature of the presence of a third body orbiting around XB 1916-053 [PDF]

, 2015
The ultra-compact dipping source \object{XB 1916-053} has an orbital period of close to 50 min and a companion star with a very low mass (less than 0.1 M$_{\odot}$). The orbital period derivative of the source was estimated to be $1.5(3) \times 10^{-11}$
Burderi, L., Del Santo, M., Di Salvo, T., Galiano, C. G., Gambino, A. F., Iaria, R., Matranga, M., Pintore, F., Riggio, A., Romano, P., Sanna, A., Scarano, F.   +11 more
core   +2 more sources