Results 71 to 80 of about 158,670 (292)

Lensing by Kerr Black Holes. II: Analytical Study of Quasi-Equatorial Lensing Observables

, 2011
In this second paper, we develop an analytical theory of quasi-equatorial lensing by Kerr black holes. In this setting we solve perturbatively our general lens equation with displacement given in Paper I, going beyond weak-deflection Kerr lensing to ...
A. O. Petters, Amir B. Aazami, Bozza V., Chandrasekhar S., Charles R. Keeton, Dymnikova I., Dymnikova I., Vásquez S., Weinberg S.   +8 more
core   +1 more source

Rapidly Rotating Lenses: Repeating features in the lightcurves of short period binary microlenses [PDF]

, 2011
Microlensing is most sensitive to binary lenses with relatively large orbital separations, and as such, typical binary microlensing events show little or no orbital motion during the event.
Albrow, Alcock, An, Batista, Beaulieu, Beaulieu, Bennett, Bennett, Bennett, Bennett, Bennett, Bozza, Buchalter, Cherepashchuk, Dominik, Dominik, Dong, Dubath, Duquennoy, Eamonn Kerins, Erdl, Gaudi, Gaudi, Gould, Gould, Gould, Griest, Han, Han, Hwang, Ioka, Kerins, Konno, Kozłowski, Kubas, Liebes, Mao, Mao, Marshall, Matthew T. Penny, Nemiroff, Paczyński, Penny, Poindexter, Raghavan, Rahvar, Rattenbury, Refsdal, Refsdal, Robin, Ryu, Schneider, Shude Mao, Skowron, Smith, Smith, Smith, Smith, Smith, Udalski, Udalski, Witt, Witt, Zheng   +63 more
core   +3 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

The estimation of broiler respiration rate based on the semantic segmentation and video amplification

Frontiers in Physics, 2022
Respiratory rate is an indicator of a broilers’ stress and health status, thus, it is essential to detect respiratory rate contactless and stress-freely.
Jintao Wang, Jintao Wang, Longshen Liu, Mingzhou Lu, Cedric Okinda, Cedric Okinda, Daniela Lovarelli, Marcella Guarino, Mingxia Shen   +8 more
doaj   +1 more source

A Neural Model of Motion Processing and Visual Navigation by Cortical Area MST [PDF]

, 1997
Cells in the dorsal medial superior temporal cortex (MSTd) process optic flow generated by self-motion during visually-guided navigation. A neural model shows how interactions between well-known neural mechanisms (log polar cortical magnification ...
Grossberg, Stephen, Mingolla, Ennio, Pack, Christopher   +2 more
core   +1 more source

Magnification relations for Kerr lensing and testing Cosmic Censorship [PDF]

, 2007
A Kerr black hole with mass parameter m and angular momentum parameter a acting as a gravitational lens gives rise to two images in the weak field limit.
A. O. Petters, A. O. Petters, B. O’Neill, M. C. Werner, P. Schneider, R. Penrose, S. Chandrasekhar   +6 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Theory and practice of microlensing lightcurves around fold singularities

, 2003
Among all galactic microlensing events, those involving a passage of the observed source star over the caustic created by a binary lens are particularly useful in providing information about stellar atmospheres, the dynamics of stellar populations in our
Abe, Afonso, Afonso, Afonso, Afonso, Albrow, Albrow, Albrow, Albrow, Albrow, Albrow, Albrow, Alcock, Alcock, Alcock, Alcock, An, Cassan, Castro, Di Stefano, Di Stefano, Dominik, Dominik, Dominik, Dominik, Dominik, Dominik, Dominik, Fields, Gaudi, Gaudi, Gould, Gradshteyn, Hardy, Jaroszyński, M. Dominik, Mao, Mao, Rhie, Schneider, Schneider, Schneider, Schneider, Schneider, Schneider, Sumi, Udalski, Udalski, Witt, Woźniak, Yoo   +50 more
core   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

An Experimental Validation of Phase-Based Motion Magnification for Structures with Developing Cracks and Time-Varying Configurations

Shock and Vibration, 2021
In this study, Computer Vision and Phase-Based Motion Magnification (PBMM) are validated for continuous Structural Health Monitoring (SHM) purposes. The aim is to identify the exact instant of occurrence for damage or abrupt structural changes from video-
M. Civera, L. Zanotti Fragonara, P. Antonaci, G. Anglani, C. Surace   +4 more
doaj   +1 more source