Results 61 to 70 of about 482,948 (211)

Posterior pole asymmetry analysis and retinal thickness measurements in young relatives of glaucoma patients

Kaohsiung Journal of Medical Sciences, 2015
The presence of a family history of glaucoma is a known risk factor for primary open-angle glaucoma (POAG) in middle-aged and older individuals. In this study, our aim was to demonstrate possible early glaucomatous alterations in young first- and second ...
Gökhan Pekel, Semra Acer, Ramazan Yağcı, Hüseyin Kaya, Fatih Özbakış, Alperen Bahar, Ebru Nevin Çetin   +6 more
doaj   +1 more source

Topological Properties of Spatial Coherence Function

, 2007
Topology of the spatial coherence function is considered in details. The phase singularity (coherence vortices) structures of coherence function are classified by Hopf index and Brouwer degree in topology.
Dennis M R, Duan Y S, Duan Y S, Duan Yi-Shi, Goursat E, Leach J, Ren J R, Ren Ji-Rong, Schouton J A, Zhu Tao   +9 more
core   +1 more source

Complex degree of coherency inherent to laser images of blood plasma polycrystalline networks [PDF]

Semiconductor physics, quantum electronics and optoelectronics, 2010
Given in this paper are theoretical basics for correlation-phase analysis of laser images inherent to human blood plasma. Also presented are comparative results of measurements aimed at coordinate distributions of the module of complex degree of coherency (CDC) and complex degree of mutual polarization (CDMP) of laser images describing blood plasma of ...
openaire   +1 more source

Study on the application of optical coherence microscopy in Hirschsprung's disease

Scientific Reports, 2023
To explore the clinical application value of optical coherence microscopy (OCM) in Hirschsprung’s disease. 109 HSCR patients were recuited in a Chinese hospital from January 2018 to July 2021. All the recruited patients underwent barium enema angiography
Zhiwei Wu, Jialun Song, Xianxu Zeng, Zhenjie Cao, Xinxin Zhao, Peng Wang, Qian Ma, Huan Ma, Baojin Wang, Junpeng Du   +9 more
doaj   +1 more source

Coherence and Coupling Functions Reveal Microvascular Impairment in Treated Hypertension

Frontiers in Physiology, 2017
The complex interactions that give rise to heart rate variability (HRV) involve coupled physiological oscillators operating over a wide range of different frequencies and length-scales. Based on the premise that interactions are key to the functioning of
Valentina Ticcinelli, Tomislav Stankovski, Tomislav Stankovski, Dmytro Iatsenko, Dmytro Iatsenko, Alan Bernjak, Alan Bernjak, Adam E. Bradbury, Andrew R. Gallagher, Peter B. M. Clarkson, Peter V. E. McClintock, Aneta Stefanovska   +11 more
doaj   +1 more source

Modulation control and spectral shaping of optical fiber supercontinuum generation in the picosecond regime

, 2008
Numerical simulations are used to study how fiber supercontinuum generation seeded by picosecond pulses can be actively controlled through the use of input pulse modulation.
A. Demircan, A. Efimov, A. Peleg, A.L. Gaeta, A.V. Husakou, B. J. Eggleton, B.A. Cumberland, C.R. Menyuk, D. Türke, D.R. Solli, E.J. Greer, F. Luan, F. Vanholsbeeck, F. Vanholsbeeck, F.K. Abdullaev, G. Cappellini, G. Genty, G.E. Falkovich, G.P. Agrawal, J. M. Dudley, J.K. Ranka, J.M. Dudley, J.M. Dudley, J.M. Dudley, J.M. Dudley, J.N. Kutz, K.J. Blow, K.L. Corwin, M.H. Frosz, M.N. Islam, M.N. Islam, N. Korneev, P.D. Drummond, P.V. Mamyshev, R.H. Stolen, S.A. Derevyanko, S.M. Kobtsev, S.M. Kobtsev, S.M. Kobtsev, S.V. Smirnov, T. Georges, T.J. Ellingham, Y.J. Chung   +42 more
core   +3 more sources

Ray-based simulation of the propagation of light with different degrees of coherence through complex optical systems

Applied Optics, 2009
We show the functional extension of a standard ray tracer to be capable of tracing light fields of different degrees of coherence through complex optical systems. The light fields are represented by spherical waves. An approximate reconstruction of the optical field is possible at arbitrary positions in an optical system under investigation. Therefore,
Lemmer, U., Riechert, F., Dürr, F., Rohlfing, U.   +3 more
openaire   +2 more sources

Quantification of Overlapping and Network Complexity in News: Assessment of Top2Vec and Fuzzy Topic Models

Applied Sciences
Topic modeling in digital news faces the dual challenge of thematic overlap and evolving semantic boundaries, especially in morphologically rich languages like Turkish.
Ismail Burak Parlak, Musa Şervan Şahin, Tankut Acarman, Mouloud Adel, Salah Bourennane   +4 more
doaj   +1 more source

Quasi-periodic pulse amplitude modulation in the accreting millisecond pulsar IGR J00291+5934

, 2017
We introduce a new method for analysing the aperiodic variability of coherent pulsations in accreting millisecond X-ray pulsars. Our method involves applying a complex frequency correction to the time-domain light curve, allowing for the aperiodic ...
Bult, Peter, van der Klis, Michiel, van Doesburgh, Marieke   +2 more
core   +1 more source

Diagnostics of optic disk drusen in children

Oftalʹmologiâ, 2016
Diagnosis of deep optic disc drusen (OND) in children is difficult because they are not visualized ophthalmoscopically and often mimic a picture of stagnation, identifying the wrong tactics diagnostic and therapeutic actions.Materials and Methods ...
A. G. Shchuko, D. U. Samsonov, S. I. Zhukova, T. N. Iureva   +3 more
doaj   +1 more source