Results 101 to 110 of about 321,734 (315)

Systems analysis on laser beamed power [PDF]

open access: yes
The NASA SELENE power beaming program is intended to supply cost-effective power to space assets via Earth-based lasers and active optics systems.
Zeiders, Glenn W., Jr.
core   +1 more source

The Palomar Kernel Phase Experiment: Testing Kernel Phase Interferometry for Ground-based Astronomical Observations

open access: yes, 2015
At present, the principal limitation on the resolution and contrast of astronomical imaging instruments comes from aberrations in the optical path, which may be imposed by the Earth's turbulent atmosphere or by variations in the alignment and shape of ...
Greenbaum, Alexandra   +7 more
core   +2 more sources

Estimation of groundwater flow rate by an actively heated fiber optics based thermal response test in a grouted borehole

open access: green, 2022
Bo Zhang   +7 more
openalex   +2 more sources

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

open access: yesMolecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix   +13 more
wiley   +1 more source

Fiber Optics in Medicine Module

open access: yesMedEdPORTAL, 2015
Fiber optics is an important light collection and delivery system in medical endoscopic and laser surgery procedures. In order to scaffold student understanding in fiber optics, and addresses specific competencies in Scientific Foundations for Future ...
Mary Lowe   +4 more
doaj   +1 more source

Optical Synoptic Telescopes: New Science Frontiers

open access: yes, 2010
Over the past decade, sky surveys such as the Sloan Digital Sky Survey have proven the power of large data sets for answering fundamental astrophysical questions.
Tyson, J. Anthony
core   +1 more source

Correlation of the differential expression of PIK3R1 and its spliced variant, p55α, in pan‐cancer

open access: yesMolecular Oncology, EarlyView.
PIK3R1 undergoes alternative splicing to generate the isoforms, p85α and p55α. By combining large patient datasets with laboratory experiments, we show that PIK3R1 spliced variants shape cancer behavior. While tumors lose the protective p85α isoform, p55α is overexpressed, changes linked to poorer survival and more pronounced in African American ...
Ishita Gupta   +10 more
wiley   +1 more source

Active Correction of Aberrations of Low-Quality Telescope Optics [PDF]

open access: yes
A system of active optics that includes a wavefront sensor and a deformable mirror has been demonstrated to be an effective means of partly correcting wavefront aberrations introduced by fixed optics (lenses and mirrors) in telescopes.
Chen, Yijian, Hemmati, Hamid
core   +1 more source

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