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Variation on Zernike’s phase-contrast microscope
Applied Optics, 2000We describe the design, construction, and testing of a variant of Zernike's phase-contrast microscope. The sample is illuminated with a white-light source through an annular aperture, which is projected onto the entrance pupil of the objective lens. In the return path the light diffracted by the sample and appearing in the interior of the objective's ...
R, Liang, J K, Erwin, M, Mansuripur
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Variations in the Mortality with Respect to Lunar Phases
Earth, Moon, and Planets, 1999The overall mortality and cardiovascular mortality data from Romania within 1989–1995 were processed. They exhibit an increase by about 10% caused by the increase of inhabitants and by the increase of their average age. The percentage of cardiovascular mortality increases as well.
Jaroslav Střeštík +3 more
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Variational Bayes for Phase-Type Distribution
Communications in Statistics - Simulation and Computation, 2014This article develops an algorithm for estimating parameters of general phase-type (PH) distribution based on Bayes estimation. The idea of Bayes estimation is to regard parameters as random variables, and the posterior distribution of parameters which is updated by the likelihood function provides estimators of parameters.
Hiroyuki Okamura +2 more
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On Covariant Phase Space and the Variational Bicomplex
International Journal of Theoretical Physics, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Phase Variation of the mrp Fimbrial Promoter
2019Mannose-resistant Proteus-like (MR/P) fimbriae, produced by the uropathogen Proteus mirabilis, are major contributors to urinary tract infection. Expression of mrp genes is controlled by an invertible element in the mrp operon promoter, and promoter orientation is controlled by a single recombinase, MrpI, which determines whether the element is in the ...
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Anomalies of the Schwinger variational phase shifts
Physical Review A, 1990The origin of certain anomalies of the Schwinger variational phase shifts in momentum space is investigated. It is demonstrated that these anomalies are related to the appearance of continuum bound states in the approximate calculation.
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Phase variation as a major mechanism of adaptation in Mycobacterium tuberculosis complex
Proceedings of the National Academy of Sciences of the United States of America, 2023Christopher Sassetti +2 more
exaly
No Change, No Life? What We Know about Phase Variation in Staphylococcus aureus
Microorganisms, 2021Kazuya Morikawa, Ryosuke Ohniwa
exaly