Results 41 to 50 of about 130,570 (300)
Journal of Asian Ceramic Societies, 2022 Lead free ferroelectric ceramic Ba4Sm2Hf4Nb6O30(BSHN) with tungsten bronze structure was synthesized and characterized. The effect of B-site cation electron configuration (Hf and Zr) on origin of ferroelectricity and polarization reversal was also ...
Wenbin Feng +3 more
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Pulsating star research from Antarctica
EPJ Web of Conferences, 2017 This invited talk discusses the pulsating star research from the heart of Antarctica and the scientific polar challenges in the extreme environment of Antarctica, and how the new polar technology could cope with unresolved stellar pulsation enigmas and ...
Chadid Merieme
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EVOLUTION OF THE PHOTOMETRIC PROPERTIES OF THE MAGNETIC CATACLYSMIC BINARY QQ VUL IN 1986-88
Odessa Astronomical Publications, 2017 The long term activity variations of polar QQ Vul in 1986-88 are reported. Changes of the amplitude and the shape of phase eclipse curve are present. Moments of 20 minima are presented which are in a good agreement with the ephemeris by Andronov and ...
A. V. Halevin +3 more
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Postglacial sea-level history of Edgeøya and Barentsøya, eastern Svalbard [PDF]
, 1995 Four relative sea-level curves from Edgeøya and Barentsøya are constructed based on 81 radiocarbon age determinations on carefully selected and levelled samples in raised beaches, mostly driftwood embedded in beach gravel.
Mangerud, Jan +7 more
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Behind the curve: a comparison of historical sources for the Carnegie curve of the global atmospheric electric circuit [PDF]
History of Geo- and Space Sciences, 2020 The “Carnegie curve” describes the diurnal variation of the global atmospheric electric circuit. It was originally found from atmospheric electric potential gradient (PG) measurements made on the Carnegie, effectively a floating atmospheric electrical ...
R. G. Harrison
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The Holditch-Type Theorem for the Polar Moment of Inertia of the Orbit Curve in the Generalized Complex Plane [PDF]
, 2016 In this study, we first calculate the polar moment of inertia of orbit curves under one-parameter planar motion in the generalized complex plane and then give the Holditch-type theorem for : When the fixed points and on the moving plane trace the same ...
Tosun, Murat +2 more
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Journal of EngineeringIn present paper, the derivation of stiffness matrix for a general two dimensional curved element in the global coordinates system is presented. The derivation depends on the assumption that any curved in-plane element can be approximated by a specified
Balqees Abdul Wahid Ahmed +1 more
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FEBS Letters, EarlyView.Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi +5 more
wiley +1 more source
Jixie chuandong, 2023 The tooth profiles at different positions of the non-circular gear pitch curve have the characteristics of equal modulus but unequal curvature radius and polar diameter.
Han Jiang +3 more
doaj
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source