Zobrazeno 1 - 10
of 1 099
pro vyhledávání: '"Petrov, Petar"'
For decades since the development of phase-contrast optical microscopy, an analogous approach has been sought for maximizing the image contrast of weakly-scattering objects in transmission electron microscopy (TEM). The recent development of the lase
Externí odkaz:
http://arxiv.org/abs/2410.11328
Although defocus can be used to generate partial phase contrast in transmission electron microscope images, cryo-electron microscopy (cryo-EM) can be further improved by the development of phase plates which increase contrast by applying a phase shif
Externí odkaz:
http://arxiv.org/abs/2401.11678
Autor:
Petrov, Petar Dimitrov
Publikováno v:
Navegações: Revista de Cultura e Literaturas de Língua Portuguesa, Vol 4, Iss 2, Pp 219-226 (2011)
Da análise de alguns contos da autoria de José Cardoso Pires e de Rubem Fonseca, depreende-se que se trata de dois prosadores cuja representação literária põe a tónica em determinados aspectos que configuram uma informação temática geral ce
Externí odkaz:
https://doaj.org/article/b21a701a61c64edfa32ddb8b1df256d2
Autor:
Petrov, Petar P.
Let ${\mathbf P}$ be the class of polynomial-time decision problems and $\mathbf{NP}$ be the class of nondeterministic polynomial time decision problems. We prove the following: Theorem 3. The classes ${\mathbf P}$ and $\mathbf{NP}$ are equivalent. T
Externí odkaz:
http://arxiv.org/abs/2208.07327
Autor:
Remis, Jonathan a, Petrov, Petar N. a, b, Zhang, Jessie T. a, b, Axelrod, Jeremy J. a, c, Cheng, Hang d, e, Sandhaus, Shahar a, Mueller, Holger a, b, Glaeser, Robert M. b, d, ⁎
Publikováno v:
In Journal of Structural Biology December 2024 216(4)
Autor:
Kaynarov, Dimitar, Marinova, Karina, Marinova, Rossitsa, Petkov, Peicho, Velkova, Lyudmila, Dolashki, Aleksandar, Petrov, Petar, Litov, Leandar, Lilkova, Elena, Dolashka, Pavlina, Ilieva, Nevena
Publikováno v:
In Biochemistry and Biophysics Reports September 2024 39
Autor:
Petrov, Petar Dimitrov
Publikováno v:
Letras de Hoje, Vol 25, Iss 1, Pp 51-60 (1990)
Externí odkaz:
https://doaj.org/article/ef0168be2abb4089b1f8cb1db71216df
Autor:
Petrov, Petar P.
Let $\P_{n}^c(\bar{\mu},\bar{\nu})$ be the set of all complex polynomials $p(z)=\prod_{i=1}^{m}(z-z_i)^{\mu_i}$, $\sum_{i=1}^m\mu_i=n$, with derivatives of the form $$ p'(z)=n\prod_{i=1}^{m}(z-z_i)^{\mu_i-1}\prod_{j=1}^{k}(z-\xi_j)^{\nu_j}, ~\sum_{j=
Externí odkaz:
http://arxiv.org/abs/2104.00348
Autor:
Turnbaugh, Carter, Axelrod, Jeremy J., Campbell, Sara L., Dioquino, Jeske Y., Petrov, Petar N., Remis, Jonathan, Schwartz, Osip, Yu, Zanlin, Cheng, Yifan, Glaeser, Robert M., Mueller, Holger
Transmission electron microscopy (TEM) of vitrified biological macromolecules (cryo-EM) is limited by the weak phase contrast signal that is available from such samples. Using a phase plate would thus substantially improve the signal-to-noise ratio.
Externí odkaz:
http://arxiv.org/abs/2012.08638
Autor:
Petrov, Petar N., Moerner, W. E.
Nanoscale localization of point emitters is critical to several methods in optical fluorescence microscopy, including single-molecule super-resolution imaging and tracking. While the precision of the localization procedure has been the topic of exten
Externí odkaz:
http://arxiv.org/abs/2003.12555