Search results for "sers"
showing 10 items of 478 documents
Confocal scanning laser ophthalmoscopy versus modified conventional fundus camera for fundus autofluorescence.
2016
Fundus autofluorescence (FAF) is a noninvasive imaging method to detect fundus endogenous fluorophores, mainly lipofuscin located in the retinal pigment epithelium (RPE). The FAF provides information about lipofuscin distribution and RPE health, and consequently an increased accumulation of lipofuscin has been correlated with ageing and development of certain retinal conditions. Areas covered: An exhaustive literature search in MEDLINE (via OVID) and PUBMED for articles related to ocular FAF in retinal diseases and different devices used for acquiring FAF imaging was conducted. Expert commentary: This review aims to show an overview about autofluorescence in the RPE and the main devices use…
‘It has given me this kind of courage…’: the significance of CLIL in forming a positive target language self-concept
2019
This article sets out to broaden the understanding of foreign language self-concept in CLIL context. The few existing studies on self-concept in CLIL have been quantitative and provided somewhat discrepant results, highlighting the need for approaching the topic qualitatively. The data of the present study are in-depth interviews with 24 former Finnish CLIL pupils who retrospectively reflected on their CLIL experiences. The participants had received English-medium CLIL for nine years during their comprehensive school in the 1990s. The data were analyzed qualitatively using thematic analysis. The participants generally felt that CLIL had had a significant role in contributing to their very p…
Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber
2009
Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber is experimentally and numerically investigated. Guiding light in such fiber occurs via two mechanisms: photonic bandgap in the central silica core or total internal reflection in the germanium doped inclusions. By properly combining spectral filtering, dispersion tailoring and pump coupling into the fiber modes, we experimentally demonstrate efficient supercontinuum generation with controllable spectral bandwidth.
Porous 3D Printed Scavenger Filters for Selective Recovery of Precious Metals from Electronic Waste
2018
Selective laser sintering (SLS) 3D printing is used to fabricate highly macroporous ion scavenger filters for recovery of Pd and Pt from electronic waste. The scavengers are printed by using a mixture of polypropylene with 10 wt% of type‐1 anion exchange resin. Porosities and the flow‐through properties of the filters are controlled by adjusting the SLS printing parameters. The cylinder‐shaped filters are used in selective recovery of Pd and Pt from acidic leachate of electronic waste simply by passing the solution through the object. Under such conditions, the scavenger filters are able to capture Pd and Pt as anionic complexes with high efficiency from a solution containing mixture of dif…
Garantías legales del concepto de privacidad: Entre el derecho al olvido y el nuevo reglamento europeo de protección de datos
2018
The operation of new technologies and the supply of digital goods involves for users to disclose their personal data. The market data is already a reality with the danger that this entails for the privacy of citizens. The new General Data Protection Regulation has created a new legal framework that aims to radically change the current model, giving users greater powers to control their data. A good example of this is the express statement, and for the first time, of the right to be forgotten, which allows citizens to digitally erase their data when other fundamental rights are endangered.
Servicios de intermediación en línea en Europa : diseño de un sistema específico de solución de controversias
2021
Este trabajo analiza el sistema de solución de controversias específicamente diseñado, con la introducción de alternativas a la jurisdicción, en el Reglamento (UE) 2019/1150 sobre el fomento de la equidad y la transparencia para los usuarios profesionales de servicios de intermediación en línea, que ha entrado recientemente en vigor.
Calibration of the photon spectrometer PHOS of the ALICE experiment
2019
Journal of Instrumentation 14(05), P05025 - P05025 (2019). doi:10.1088/1748-0221/14/05/P05025
Diagnostic utility of new short versions of AUDIT to detect binge drinking in undergraduate students
2021
ABSTRACT This study examines the usefulness of two AUDIT adaptations with a sample of 907 undergraduate alcohol users. On the one hand, it includes the AR2i that encompasses revised A2r and A3r consumption items, and on the other hand—in addition to the two former items—the inclusion of items 4, 8, and 9, which evaluate consequences. The results indicate that both adaptations identify BD more precisely than the traditional scales (AUDIT and AUDIT-C), but the usefulness of each will depend on the clinical purpose they are given. In environments where time is a key factor in detecting high-risk consumption it will be more appropriate to use AR2i, which evaluates the pattern of con…
Analysis of the morphology and composition of tooth apices apicectomized using three different ablation techniques.
2011
Objectives: To investigate apicectomies performed using burs, a CO2 laser or an Er:YAG laser and to evaluate the following aspects: morphology of apicectomized surfaces, presence of failures at the dentin/obturation material interface (marginal fit) of the apical portions of the root canals, and the proportions of chemical elements in the apicectomized surfaces. Study design: Twenty-four teeth were divided into three groups of eight and each group underwent apicectomy by one of three different ablation techniques: bur, CO2 laser or Er:YAG laser. The morphology of the apicectomized surfaces was then analyzed using scanning electron microscopy and their chemical composition was analyzed by en…
Q-switching of an all-fiber ring laser based on in-fiber acousto-optic bandpass modulator2017
2017
Active Q-switching of an all-fiber ring laser utilizing a novel in-fiber acousto-optic tunable bandpass filter (AOTBF) is reported. The transmission characteristics of the AOTBF are controlled by amplitude modulation of the acoustic wave; the device exhibits a 3-dB power insertion loss, 0.91-nm optical bandwidth, and 28-dB nonresonant light suppression. Cavity loss modulation is achieved by full acousto-optic mode re-coupling cycle induced by traveling flexural acoustic waves. When the acoustical signal is switched on, cavity losses are reduced, and then, laser emission is generated. In addition, by varying the acoustic wave frequency, a wide wavelength tuning range of 30.7 nm is achieved f…