Results 221 to 230 of about 2,341 (249)

Finds of structural details of composite bows from Ancient Rus

Acta Archaeologica Academiae Scientiarum Hungaricae, 2011
This paper is concerned with the problem of the appearance and distribution of the traditional nomadic weapon — the composite bow — in Ancient Rus. The authors have summarised evidence on fifteen complexes with new finds of composite bows at the most ancient Russian sites.
Mikhailov, K. A., Kainov, S. Yu.
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Durability evaluation of a composite bogie frame with bow-shaped side beams

Journal of Mechanical Science and Technology, 2012
In the current study, the static structural safety and durability of two composite bogie frame models were evaluated using a finite element analysis. Prior to evaluation, the in-plane and out-of-plane mechanical properties of the base material were measured. The fatigue property was also measured to evaluate the durability of two composite bogie frames.
Jung Seok Kim, Kwang Bok Shin, Hyuk Jin Yoon, Woo Geun Lee   +3 more
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Large and composition-dependent band gap bowing in InxGa1−xN alloys

Materials Science and Engineering: B, 1999
Abstract We present theoretical and experimental results for the band gap of In x Ga 1− x N alloys, showing significantly larger bowing than has been commonly assumed. We highlight the importance of properly including strain in the experimental analysis.
Chris G Van de Walle, M.D McCluskey, C.P Master, L.T Romano, N.M Johnson   +4 more
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The Replacement of the Composite Reflex Bow by Firearms in the Muscovite Cavalry

Kritika: Explorations in Russian and Eurasian History, 2010
The Muscovite cavalry went over to carbines and pistols during the course of the 17th century, yet firearms were not better handheld weapons than the composite reflex bow that the cavalry had been using. The carbine was a light form of musket that could be used on horseback, (1) but it had a very short range.
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Composite bows at ed‐Dur (Umm al‐Qaiwain, U.A.E.)

Arabian Archaeology and Epigraphy, 2005
This article discusses seven bone fragments excavated during the second Belgian archaeological campaign at ed‐Dur (tomb G.3831, area N). Rather than weaving implements, these objects are identified as the reinforcing bone laths of composite bows. Information on the composite bow in general—origins, structural composition and technical advantages—will ...
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Fracture Toughness Predictions for Crack Bowing in Brittle Particulate Composites

Journal of the American Ceramic Society, 1983
The bowing of cracks between obstacles has been proposed as a mechanism for increasing the .fracture toughness of brittle materials. An analytical expression is presented based on previous theoretical studies that can be used to predict the increase in fracture toughness.
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Bandgap nonlinearity and composition-dependent bowing in α-(AlxGa1−x)2O3 epilayers

The Journal of Chemical Physics
Designing functional materials with tailored properties often involves alloying different semiconductors, yet the nonlinear bandgap bowing effect complicates precise bandgap engineering, particularly in ultrawide-bandgap systems, such as Ga2O3 ternary alloys.
Xinyu Sun, Wei Wei, Fang-fang Ren, Xiangyuan Cui, Shulin Gu, Rong Zhang, Youdou Zheng, Jiandong Ye   +7 more
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Ranking the drivers of the Venusian bow shock and ion composition boundary locations

The Venusian interaction with the solar wind leads to the formation of an induced magnetosphere structured by plasma boundaries. Their dynamics is complex, due to the combined influence of external (solar photons, solar wind plasma and interplanetary magnetic field (IMF)) and internal (ionized atmosphere) drivers.
Garnier, Philippe, Persson, Moa, Bergman, Sofia, Futaana, Yoshifumi   +3 more
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The composition effect on the bowing parameter in the cubic InGaN, AlGaN and AlInN alloys

2017
Numerical simulation based on FP-LAPW calculations is applied to study direct and indirect band gap energy of the cubic AlxGa??????xN, InxGa??????xN and InxAl??????xN alloys.The direct and indirect band-gap bowing parameter is also calculated, and the values obtained are very important, as we find a strong dependence of the bowing parameter on the ...
Berrah, S., Boukortt, A., Abid, A.
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Composite Bows of the High Middle Ages from Rock Burials in Mongolia

Universum Humanitarium
The article examines composite bows of Central Asian nomads from the rock burials of Mongolia in the 11th – 14th centuries. Descriptions of five bow specimens with preserved kibiti are presented. The collected materials allow us to identify some trends in the evolution of composite bows of the region in question.
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