Results 31 to 40 of about 927,137 (277)

A comparison of optical and radar measurements of mesospheric winds and tides [PDF]

, 2000
Optical measurements of mesospheric winds by Fabry‐Perot spectrometers, FPSs, at Mawson, 67.6°S 62.9°E, and Davis, 68.6°S 78.0°E, Antarctica are compared with similar measurements obtained using a spaced‐antenna MF radar at Davis.
Baker, Charles, D. J. Murphy, Greet, Greet, Hernandez, Hernandez, Hines, Khattatov, Lesicar, Manson, Meek, P. A. Greet, P. L. Dyson, Palo, Plagmann, Portnyagin, R. Vincent, Vincent   +18 more
core   +1 more source

Study on the Mechanical Properties and Energy Absorption Characteristics of Bionic Variable-Amplitude TPMS Structures

Proceedings
Introduction: The three-period minimal surface (TPMS) structure has great potential in the fields of lightweight and energy absorption due to its high strength, high porosity, and self-supporting characteristics [...]
Xiaofei Ma, Ce Guo, Xiao Wang
doaj   +1 more source

Some Aspects of Variable Amplitude Fatigue [PDF]

International Journal of Metallurgy and Metal Physics, 2019
Fatigue crack growth behavior of selected aluminum alloys under variable amplitude loading is discussed in this study, based principally on experimental observations. The tests include single overloads tests in different environments, and tests using an aircraft wing loading spectrum.
Gwider, Albashir, Ranganathan, Narayanaswami   +1 more
openaire   +2 more sources

Probability Analysis in Determining the Behaviour of Variable Amplitude Strain Signal Based on Extraction Segments

Latin American Journal of Solids and Structures
This paper focuses on analysis in determining the behaviour of variable amplitude strain signals based on extraction of segments. The constant Amplitude loading (CAL), that was used in the laboratory tests, was designed according to the variable ...
M. F. M. Yunoh, S. Abdullah, M. H. M. Saad, Z. M. Nopiah, M. Z. Nuawi   +4 more
doaj   +1 more source

Estimation of fatigue life on heat-treated 0.45%C steel under repeated two-step variable amplitude loading

Nihon Kikai Gakkai ronbunshu, 2018
In order to design a rotating shaft, it is necessary to investigate the fatigue characteristics under the variable amplitude loading by using a rotating bending fatigue machine.
Toru TAKASE, Atsuhiro KOYAMA, Takeshi UCHIDA   +2 more
doaj   +1 more source

Blue large-amplitude pulsators as a new class of variable stars

, 2017
Regular intrinsic brightness variations observed in many stars are caused by pulsations. These pulsations provide information on the global and structural parameters of the star.
Angeloni, R., di Mille, F., Dziembowski, W. A., Kozlowski, S., Latour, M., Mroz, P., Pawlak, M., Pietrukowicz, P., Poleski, R., Skowron, D., Skowron, J., Soszynski, I., Szymanski, M. K., Udalski, A., Ulaczyk, K., Wyrzykowski, L.   +15 more
core   +2 more sources

Sulla stima della vita a fatica di giunti saldati soggetti a carichi multiassiali ad ampiezza variabile [PDF]

Fracture and Structural Integrity, 2009
Nel presente articolo viene proposta una nuova metodologia di progettazione a fatica, basata sull’utilizzo del metodo delle Curve di Wöhler Modificate, per la previsione della vita a fatica di giunzioni saldate, sia in acciaio che in alluminio, soggette
R. Tovo, D. Benasciutti, L. Susmel
doaj  

Response maxima in modulated turbulence [PDF]

, 2003
Isotropic and homogeneous turbulence driven by an energy input modulated in time is studied within a variable range mean-field theory. The response of the system, observed in the second order moment of the large-scale velocity difference D(L,t)=>~Re(t)^2$
Grossmann, S., Lohse, D., von der Heydt, A.   +2 more
core   +8 more sources

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li, Ronghua Hong, Hua You, Feiping Xu, Qingjun Zhang, Yiwen Lin, Yuting Su, Danmei Lan, Lingjing Jin, Junhui She   +9 more
wiley   +1 more source

A two-step multiaxial racetrack filter algorithm for non-proportional load histories [PDF]

Fracture and Structural Integrity, 2017
The recently proposed multiaxial racetrack filter (MRF) is able to deal with general non-proportional multiaxial load histories. While only requiring a single user-defined scalar filter amplitude, the MRF is able to synchronously eliminate non-damaging ...
Marco Antonio Meggiolaro, Jaime Tupiassú Pinho de Castro , Hao Wu   +2 more
doaj   +3 more sources