Search results for "Lens"
showing 10 items of 948 documents
Flexible design of multifocal metalenses based on autofocused Airy beams
2018
Extreme miniaturization of on-demand optical devices such as ultrathin lenses is currently leading to significant advancements in manufacturing novel materials and nanotechnologies. Flexibility and tunability of engineered layouts enable efficient integration of complex photonic modules. In this regard, here we propose an autofocused Airy (AFA)-based metalens that operates, depending on the molded phase profile, as a multifocal focusing lens, which to the best of our knowledge has not been reported before. To do this, we call attention to the fact that the two conjugate focal points of an AFA beam can be brought into real space by applying a proper convex lens phase profile. Considering ful…
Tillage effects on yield and nitrogen fixation of legumes in Mediterranean conditions
2012
Published in Agron. J. 104:1459–1466 (2012) Posted online [DATE] doi:10.2134/agronj2012.0070 Copyright © 2012 by the American Society of Agronomy, 5585 Guilford Road, Madison, WI 53711. All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher. I agricultural practices that involve the use of agrochemicals such as fertilizers, pesticides, and herbicides have greatly increased the global food supply but often with detrimental effects on the environment, such as contamination of ground…
Bīta paaudzes "Misticisms": Alena Ginsberga poēma „Kauciens”
2015
Alena Ginsberga poēma Kauciens ir viens no nozīmīgākajiem 20. gs. literārajiem darbiem. Pētījumā izvirzītie mērķi – izpētīt misticisma iezīmes poēmā Kauciens un identificēt reliģisko sinkrētismu tajā. Uzdevumos ietilpst misticisma definēšana darba tēmas ietvaros, Ginsberga ieskatu apskatīšana bīta paaudzes kontekstā, kā arī poēmas Kauciens analīze. Rezultātā tiek raksturots mūsdienās sastopams misticisms, kur dzejnieks darbojas kā mistiķis, kas komunicē savu pieredzi. Darbs ir unikāls poēmas Kauciens pētniecībā. Darba pamata metode ir kontentanalīze, ar kuras palīdzību tiek analizēta poēma Kauciens. Pētījuma gaitā apstiprināta darbā izvirzītā tēze – bīta paaudzes spilgtākā dzejnieka Alena G…
Model Eye Incorporating a Manually Tunable Polymer Lens and Microfluidics Chamber for Simulation of Vitreous Floaters
2016
a model eye incorporating a manually tunable lens and microfluidics chamber for simulation of vitreous floaters has been described. Aberrations correspond to average values in population and diffraction effects could be observed.
Effect of traditional, microwave and industrial cooking on inositol phosphate content in beans, chickpeas and lentils
2003
An high-performance liquid chromatography method for determining inositol phosphate fractions was adapted to legumes. The validity of the method was assessed by estimating the following analytical parameters: linearity (linear response between 125 and 5000 microg inositol hexaphosphate (IP(6))/ml); instrumental precision and method precision (relative standard deviation, %) were 1.9% (IP(6)) for instrumental, and 2.5% (IP(6)) and 8.2% (IP(5)) for method precision. An accuracy was estimated by percentage recovery (72 +/- 3%). The application of this method to raw, conventional, microwave-cooked and ready-to-eat beans, chickpeas and lentils gave IP(6) contents ranging from 0.63 g/100 g dry ma…
Antioxidant stilbenoid and flavanonol from stem ofErythrophleum suaveolens(Guill. & Perr.)
2015
Keywords: NMR; 1H NMR; Caesalpiniaceae; Erythrophleum suaveolens; flavanonol; stilbenoid; radical scavenging activity
Chlorophyll content in senescent Pelargonium graveolens leaves
2019
Pelargonium graveolens należy do rodziny Geraniaceae. Roślina ta jest aromatycznym, owłosionym krzewem, sięgającym 1,2 metra wysokości i osiągającym 1 m szerokości. Jej liście są mocno powcinane, miękkie w dotyku i wydzielają intensywny zapach, natomiast kwiaty są małe, zwykle różowe, zebrane w baldachy. Ojczyzną P. graveolens jest Afryka Południowa, ale uprawia się ją obecnie w wielu krajach świata, np. wyspie Reunion, Egipcie, Rosji, Chinach czy Maroko, głównie z przeznaczeniem na produkcję olejku eterycznego. Wykorzystywany jest on w wielu gałęziach przemysłu, m.in. perfumiarstwie, kosmetyce, przemyśle spożywczym czy medycynie. Dane literaturowe pokazują, że o kondycji całej rośliny świa…
Effect of the color of the intraocular lens on optical and visual quality
2014
Purpose: To analyze the optical quality of intraocular lenses (IOL) with an orange (PC440Y) and a yellow (SN60AT) filter, and correlate these results with the visual quality of patients with these implants. Setting: Fisabio Oftalmología Médica, Valencia, Spain. Design: Randomized prospective study. Materials and Methods: The IOL optical quality was determined using the modulation transfer function (MTF) and the spectral transmission. The visual quality of 87 eyes with cataract (51 with orange filter and 36 with yellow filter) was determined by best corrected visual acuity (BCVA) and contrast sensitivity function (CSF) under photopic and mesopic conditions. To analyze the results, we use a S…
Impact of biotic and abiotic factors on bacterial virulence
2013
Regionalisme, organització internacional i la integració
2012
Xerrada sobre regionalisme i organització i integració internacional donada en el congrés sobre lleis regionals i internacionals realitzat a València del 13 al 15 de setembre.