Results 71 to 80 of about 833,654 (360)

Experimental Research on Determining the Transmittance of Lenses for Vision Correction and the Factors that Influence It

The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science
The field of making optical lenses is very vast and with great applicability in several engineering fields. The research carried out in this work implied the determination of the transmittance of optical lenses of different diopters, thicknesses, with ...
Beatrice Daniela TUDOR, Iustina BĂBUȘANU   +1 more
doaj   +1 more source

Deciphering Brain Function by Miniaturized Fluorescence Microscopy in Freely Behaving Animals

Frontiers in Neuroscience, 2020
Animal behavior is regulated by environmental stimuli and is shaped by the activity of neural networks, underscoring the importance of assessing the morpho-functional properties of different populations of cells in freely behaving animals.
Sarah Malvaut, Sarah Malvaut, Vlad-Stefan Constantinescu, Vlad-Stefan Constantinescu, Harold Dehez, Sead Doric, Armen Saghatelyan, Armen Saghatelyan   +7 more
doaj   +1 more source

Photoaligned Liquid Crystalline Structures for Photonic Applications

Crystals, 2023
With the advancement of information display technologies, research on liquid crystals is undergoing a tremendous shift to photonic devices. For example, devices and configurations based on liquid crystal materials are being developed for various ...
Aleksey Kudreyko, Vladimir Chigrinov, Gurumurthy Hegde, Denis Chausov   +3 more
doaj   +1 more source

Devil’s lenses

Optics Express, 2007
In this paper we present a new kind of kinoform lenses in which the phase distribution is characterized by the "devil's staircase" function. The focusing properties of these fractal DOEs coined devil's lenses (DLs) are analytically studied and compared with conventional Fresnel kinoform lenses.
Juan A, Monsoriu, Walter D, Furlan, Genaro, Saavedra, Fernando, Giménez   +3 more
openaire   +2 more sources

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Randomized controlled trial of anterior-chamber intraocular lenses in Nepal: long-term follow-up

Bulletin of the World Health Organization
Most of the estimated 20 million people who are blind with cataracts live in rural areas of developing countries, where expert surgical resources are scarce.
J.R. Evans, A. Hennig, D. Pradhan, A. Foster, R. Lagnado, A. Poulson, G.J. Johnson, R.P.L. Wormald   +7 more
doaj   +1 more source

Isolations and Identification of bacteria present in the fluids Save contact lenses used by some students girls of the Tikrit University

Tikrit Journal of Pure Science, 2023
The number of people who wear contact lenses (CLS) has been especially increased in the past decade as an alternative to glasses, but many of them do not realize the extent of the hazards involved, and these risks Keratitis associated with microbial ...
Shaymaa Naji Daham, Hayfaa Rajab Alwan, Hind Tariq Hamed   +2 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Insight into small eyes: a practical description from phenotypes presentations to the management [PDF]

International Journal of Ophthalmology
This narrative review aimed to have an algorithmic approach to microphthalmos by a systematic search. The definition can be related to a number of special phenotypes.
Sana Niazi, Sorcha Ní Dhubhghaill, Farideh Doroodgar, Zisis Gatzioufas, Mohammad Hossein Dehghan   +4 more
doaj   +1 more source

Applicability of mitotic figure counting by deep learning: a development and pan‐cancer validation study

FEBS Open Bio, EarlyView.
In this study, we developed a deep learning method for mitotic figure counting in H&E‐stained whole‐slide images and evaluated its prognostic impact in 13 external validation cohorts from seven different cancer types. Patients with more mitotic figures per mm2 had significantly worse patient outcome in all the studied cancer types except colorectal ...
Joakim Kalsnes, Maria X. Isaksen, Frida Julbø, Manohar Pradhan, Andreas Kleppe, Sepp De Raedt, Ole‐Johan Skrede, Turid Torheim, John Arne Nesheim, Hans Martin Mohn, Hanne A. Askautrud, Karolina Cyll, Wanja Kildal, Emma Rewcastle, Melinda Lillesand, Vebjørn Kvikstad, Emiel Janssen, Robert Jones, Odd Terje Brustugun, Bjørn Brennhovd, Erik Skaaheim Haug, Lill‐Tove Rasmussen Busund, Elin Richardsen, Sigve Andersen, Tom Dønnem, Kristina Lindemann, Gunnar Kristensen, Neil A. Shepherd, Marco Novelli, Knut Liestøl, David Kerr, Håvard E. Danielsen, Tarjei S. Hveem   +32 more
wiley   +1 more source