Results 21 to 30 of about 128,637 (311)

Fast Rotation Matching Method for SAR and Optical Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The rotation matching between synthetic aperture radar (SAR) and optical images is essential for their registration. In this article, we introduce a novel fast rotation matching method for SAR and optical images.
Xinchen Li   +6 more
doaj   +1 more source

An optical threshold function based on polarization rotation in a single semiconductor optical amplifier [PDF]

open access: yes, 2007
Optical threshold functions are a basic building block for alloptical signal processing, and this paper investigates a threshold function design reliant on a single active element. An optical threshold function based on nonlinear polarization rotation in
Liu, Y Yong   +11 more
core   +1 more source

Karakteristik Mutu Minyak Pala Berdasarkan Peralatan Distilasi Drum Bekas dan Distilasi Stainless (Studi Kasus di Kabupaten Aceh Selatan)

open access: yesRona Teknik Pertanian, 2017
Quality Characteristics of Nutmeg Oil Between Used Barrels Distillation and Stainless Distillation  (A Case Study in Aceh Selatan Regency) ABSTRACT. The Province of Aceh is the center of nutmeg oil production in Indonesia, which is about 70%-75% of the ...
Mustafril Mustafril
doaj   +1 more source

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

Chirality analysis of helical polymers

open access: yesChemistry Teacher International, 2020
Optically active macromolecules, having a preferred- or single-handed helical conformation, play important roles in polymeric materials and in life. This article presents how helical polymers can be assessed from a view of chirality.
Nakano Tamaki   +2 more
doaj   +1 more source

Positions of radiation isocenter and the couch rotation center established by Winston-Lutz and optical measurements

open access: yesTechnical Innovations & Patient Support in Radiation Oncology, 2022
Purpose: To compare x-ray and optical imaging methods for measuring the relative position of radiation isocenter and couch rotation center. To show the impact of radiation isocenter size and target motion on the margins for target contours.
Paul Jursinic, Karl Jordan, Chen Chen
doaj   +1 more source

Ultrafast all-optical modulation in silicon optical fibers [PDF]

open access: yes, 2011
Degenerate and non-degenerate two-photon absorption based modulation is demonstrated in a hydrogenated amorphous silicon core optical fiber.
Day, T.D.   +13 more
core   +1 more source

Polarimetric Determination of Starch in Raw Materials and Discharged Waste from Beer Production

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology, 2013
Brewer’s spent grain (BGS) is a by-product of thebrewing process, consisting of the solid fraction of barley malt remainingafter separation of worth. In this research, raw materials and discharged waste from beer production were evaluated on the basis of
Anca Farcas   +5 more
doaj   +1 more source

Solution‐Processed Faraday Rotators Using Single Crystal Lead Halide Perovskites

open access: yesAdvanced Science, 2020
Lead halide perovskites (LHPs) have become a promising alternative for a wide range of optoelectronic devices, thanks to their solution‐processability and impressive optical and electrical properties. More recently, LHPs have been investigated in magneto‐
Randy P Sabatini   +9 more
doaj   +1 more source

Anomalous Lehmann Rotation of Achiral Nematic Liquid Crystal Droplets Trapped under Linearly Polarized Optical Tweezers

open access: yesMolecules, 2021
Continuous rotation of a cholesteric droplet under the heat gradient was observed by Lehmann in 1900. This phenomenon, the so-called Lehmann effect, consists of unidirectional rotation around the heat flux axis.
Jarinee Kiang-ia   +5 more
doaj   +1 more source

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