Results 61 to 70 of about 771,659 (382)

Changes in the Thickness of the Sublens Water Layer in Patients Using Scleral Lenses

open access: yesOftalʹmologiâ
Purpose of the study. To analyze the change in the thickness of the sub­lens water layer depending on the time of wearing lenses in patients using scleral lenses using the SkyOptix Laboratory lenses as an example.Patients and methods.
O. I. Ryabenko   +3 more
doaj   +1 more source

Combined spatially resolved metabolomics and spatial transcriptomics reveal the mechanism of RACK1‐mediated fatty acid synthesis

open access: yesMolecular Oncology, EarlyView.
The authors analyzed the spatial distributions of gene and metabolite profiles in cervical cancer through spatial transcriptomic and spatially resolved metabolomic techniques. Pivotal genes and metabolites within these cases were then identified and validated.
Lixiu Xu   +3 more
wiley   +1 more source

Dr TIM: Ray-tracer TIM, with additional specialist scientific capabilities

open access: yes, 2013
We describe several extensions to TIM, a raytracing program for ray-optics research. These include relativistic raytracing; simulation of the external appearance of Eaton lenses, Luneburg lenses and generalized focusing gradient-index (GGRIN) lenses ...
Courtial, Johannes   +2 more
core   +1 more source

Raman microspectroscopy of fixed rabbit and human lenses and lens slices: New potentialities [PDF]

open access: yes, 1989
Raman spectroscopy is a non-invasive, non-destructive technique for the study of the macromolecular composition of tissues. Raman spectra were obtained from intact fresh and paraformaldehyde fixed rabbit lenses and from thin slices prepared from these ...
Bot, Annet C.C.   +4 more
core   +3 more sources

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

open access: yesThe 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   +1 more
doaj   +1 more source

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

open access: yesMolecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran   +16 more
wiley   +1 more source

Microfabricated rubber microscope using soft solid immersion lenses [PDF]

open access: yes, 2006
We show here a technique of soft lithography to microfabricate efficient solid immersion lenses (SIL) out of rubber elastomers. The light collection efficiency of a lens system is described by its numerical aperture (NA), and is critical for applications
Gambin, Yann   +2 more
core   +1 more source

Factors Affecting Posterior Capsule Opacification in the Development of Intraocular Lens Materials

open access: yesPharmaceutics, 2021
Posterior capsule opacification (PCO) is the most common complication arising from the corrective surgery used to treat cataract patients. PCO arises when lens epithelial cells (LEC) residing in the capsular bag post-surgery undergo hyper-proliferation ...
Grace Cooksley   +3 more
doaj   +1 more source

ShcD adaptor protein drives invasion of triple negative breast cancer cells by aberrant activation of EGFR signaling

open access: yesMolecular Oncology, EarlyView.
We identified adaptor protein ShcD as upregulated in triple‐negative breast cancer and found its expression to be correlated with reduced patient survival and increased invasion in cell models. Using a proteomic screen, we identified novel ShcD binding partners involved in EGFR signaling pathways.
Hayley R. Lau   +11 more
wiley   +1 more source

Gravitational Lenses With More Than Four Images: I. Classification of Caustics

open access: yes, 2000
We study the problem of gravitational lensing by an isothermal elliptical density galaxy in the presence of a tidal perturbation. When the perturbation is fairly strong and oriented near the galaxy's minor axis, the lens can produce image configurations ...
Charles R. Keeton   +9 more
core   +1 more source

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