Integral field near-infrared spectroscopy of II Zw 40

We present integral field spectroscopy in the near-infrared of the nearby starburst galaxy IIZw40. Our new observations provide an unprecedented detailed view of the interstellar medium and star formation of this galaxy. The radiation emitted by the galaxy is dominated by a giant HII region, which extends over an area of more than 400 pc in size. A few clusters are present in this area, however one in particular appears to be the main source of ionizing photons. We derive the properties of this object and compare them with those of the 30 Doradus cluster in the Large magellanic cloud (LMC). We study the spatial distribution and velocity field of different components of the inetrstellar medium (ISM), mostly through the Bracket series lines, the molecular hydrogen spectrum, and [FeII]. We find that [FeII] and H2 are mostly photon excited, but while the region emitting [FeII] is almost coincident with the giant HII region observed in the lines of atomic H and He, the H2 has a quite different distribution in space and velocity. The age of the stellar population in the main cluster is such that no supernova (SN) should be present yet so that the gas kinematics must be dominated by the young stars. We do not see, in the starbursting region, any geometrical or dynamical structure that can be related to the large scale morphology of the galaxy.Comment: Accepted for publication on A&

Integrated metamaterial surface-emitting antenna for beam steering applications

Integrated optical antennas are relevant devices for the development of next-generation LIDAR systems. Here we experimentally demonstrate a new topology to implement long antennas in silicon-on-insulator platform. The designed 2-millimeter-long antenna presents a measured far-field beam divergence of 0.1° and a wavelength sensitivity of 0.13°/nm.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. HTSN Challenge Program at the NRC of Canada; Junta de Andalucía (P18-RT-1453, P18-RT-793, UMA18-FEDERJA-219); Ministerio de Ciencia, Innovación y Universidades (FPU16/03401, PID2019-106747RBI00)

Bricked and evanescently-coupled topologies: expanding the portfolio of subwavelength metamaterial silicon photonic devices

We present two novel topologies of subwavelength grating (SWG) waveguides: the bricked-SWG and the evanescently-coupled-SWG. The bricked topology enables accurate control of waveguide anisotropy while maintaining the index and dispersion engineering advantage intrinsic to SWG waveguides. The evanescently-coupled-SWG allows unprecedented control of the strength of the modal perturbation in waveguide Bragg gratings and nanophotonic antennas. Both topologies leverage a Manhattan-like pattern, with pixel sizes compatible with deep-uv lithography. Our recent results will be discussed, focusing on polarization-independent multimode interference couplers for the O and C bands and a millimeter-long narrow-beam steerable optical antenna array with angular divergence of only 1.8º×0.2º.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Recent progress in subwavelength grating metamaterial engineered silicon photonic devices.

In this talk we present our recent advances in SWG metamaterial engineering. We will show a 1D-optical phased array composed of 112 evanescent-coupled surface emitting antennas with a length of 1.5 mm and fed by a compact distributed Bragg deflector. The measurements demonstrate a wavelength-steerable collimated beam with a far-field angular divergence of 1.8o × 0.2o. Experimental results of a bricked SWG 2×2 MMI coupler are also shown, achieving polarization agnostic performance in the 1500nm to 1560nm wavelength range. Both devices were fabricated on a standard 220-nm SOI platform using a single full-etch step process, with a minimum feature size of 80 nm, and thus compatible with immersion deep-UV lithography.This work was supported by the High Throughput and Secure Networks Challenge Program at the National Research Council of Canada (HTSN-209, 175363-HTSN 210); Ministerio de Ciencia, Innovación y Universidades (PID2019-106747RB-I00); Ministerio de Universidades (FPU19/02408, FPU20/03487); Junta de Andalucía (P18-RT-1453); FEDER Andalucía (UMA20-FEDERJA-158); Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Subwavelength silicon photonics: keynote presentation

2020 Photonics North (PN), Niagara Falls, ON, Canada, 26-28 May 2020Subwavelength structures are enabling a host of high-performances devices in the silicon photonic platform. Here we review our progress in the field, with an emphasis on the auspicious anisotropic properties of these structures for applications ranging from broadband on-chip GRIN-lenses, to zero-birefringence waveguides and polarization splitters

Physicochemical characteristics of citrus jelly with non cariogenic and functional sweeteners

In this study the effect of sweeteners with low glycemic index and non-cariogenic characteristics (isomaltulose, oligofructose and tagatose) in jelly prepared with citrus juice has been evaluated considering a citrus jelly formulated with sucrose as reference. The soluble solids, moisture content, pH, water activity, antioxidant capacity, optical and mechanical properties of jelly made using different sweeteners was determined during storage. Besides, mesophilic aerobics and moulds and yeasts was also counted to determine their stability over time. Sensory evaluation of the citrus jelly has also been done. The results showed the antioxidant activity decreased during storage in all formulations. Tagatose increased lightness whereas coordinates a*, b* and chrome of all the jellies prepared using new sweeteners were lower than jellies with sucrose. However, citrus jelly with only oligofructose or tagatose or with the mixture of isomaltulose and tagatose were most closely resembled to the control jelly with respect to mechanical properties. Jelly prepared with the combination of isomaltulose and tagatose in equal proportions obtained the best score in the sensorial analysis.The authors would like to thank the Serigo-Andres family for donating the raw materials, and also the GVA projects GV/2013/029, GV/2014/012 as well as the Universitat Politecnica de Valencia (Spain) for the financial support given to this research study (UPV PAID-06-12 SP20120889).Rubio-Arraez, S.; Capella Hernández, JV.; Castelló Gómez, ML.; Ortolá Ortolá, MD. (2016). Physicochemical characteristics of citrus jelly with non cariogenic and functional sweeteners. Journal of Food Science and Technology. 53(10):3642-3650. https://doi.org/10.1007/s13197-016-2319-4S364236505310Álvarez J, Pastoriza S, Alonso-Olalla R, Delgado-Andrade C, Rufián-Henares JA (2014) Nutritional and physicochemical characteristic of commercial Spanish citrus juices. Food Chem 164:396–405AOAC (2000) Official methods of analysis of AOAC international, 17th edn. Gaithersburg, MDCalzada-León R, Ruiz-Reyes ML, Altamirano-Bustamante N, Padrón-Martínez MM (2013) Features of the noncaloric sweeteners and their use in children. Acta Pediatr Méx 34(3):141–153Chacón-Villalobos A (2006) Current perspectives agribusiness oligofructosaccharides (FOS). Agron Mesoam 17(2):265–286De Oliva-Neto P, Menão PTP (2009) Isomaltulose production from sucrose by protaminobacter rubrum immobilized in calcium alginate. Bioresour Technol 100:252–4256de Queiroz Pane D, Dias CB, Meinhart AD, Ballus CA, Godoy HT (2015) Evaluation of the sweetener content in diet/light/zero foods and drinks by HPLC-DAD. J Food Sci Tech 52(11):6900–6913Edwards WP (2002) The science of goodies. Acribia S.A, SpainFood and Drug Administration (FDA) (2005) GRAS Notification Isomaltulose (PALATINOSE). http://www.fda.gov/ucm/groups/fdagov-public/@fdagovfoodsgen/documents/document/ucm268989.pdf . Accessed 12 July 2015Food and Drug Administration (FDA) (2010) GRAS Notification Tagatose. GRN No.352. http://www.fda.gov/ucm/groups/fdagov-public/@fdagov-foods-gen/documents/document/ucm269560.pdf . Accessed 12 July 2015Food and Drug Administration (FDA) (2011) GRAS Notification Oligofructose. GRN No.392. http://www.fda.gov/ucm/groups/fdagov-public/@fdagov-foodsgen/documents/document/ucm277112.pdf . Accessed 12 July 2015GME (2015) Gelatine manufactured Europe gelatine properties. http://www.gelatine.org/en/about-gelatine/properties.html . Accessed 12 July 2015ISO (2003) Sensory analysis. Guidelines for the use of quantitative response scales [ref. no.ISO 4121:2003]. International Organization for Standardization, GenevaISO (2008) Sensory analysis Vocabulary [ref. no.ISO 5492:2008]. International Organization for Standardization, GenevaLedur MJ, Tessaro I, Zapata CP (2013) Physicochemical characterization of Saccharides Powder obtained from Yacon Roots (Smallanthus sonchifolius) by membrane technology. Braz Arch Biol Technol 56(6):1024–1033Levin GV (2002) Tagatose, the new GRAS sweetener and health product. J Med Food 5(1):23–36Lina BAR, Jonker G, Kozianowski G (2002) Isomaltulose (Palatinose review of biological and toxicologycal studies). Food Chem Toxicol 40(10):1375–1381O’Donnell K, Kearsley M (2012) Sweeteners and sugar alternatives in food technology, 2nd edn. Wiley, ChichesterOh DK (2007) Tagatose: properties, applications, and biotechnological processes. Appl Microb Biotechnol 76(1):1–8Pacual MR, Calderón-Pascual V (2000) Food Microbiology. Analytical methodology for foods and drinks, 2nd edn. Diaz de Santos, MadridPeinado I, Rosa E, Heredia A, Andrés A (2012) Rheological characteristics of healthy sugar substituted spreadable strawberry product. J Food Eng 113(3):365–373Peinado I, Rosa E, Heredia A, Escriche I, Andrés A (2013) Optical, mechanical and sensorial properties of strawberry spreadable products formulated with isomaltulose. Food Bioprocess Tech 6(9):2353–2364Periche A, Heredia A, Escriche I, Andrés A, Castelló ML (2014) Optical, mechanical and sensory properties of based-isomaltulose gummy confections. Food Biosci 7:37–44Periche A, Heredia A, Escriche I, Andrés A, Castelló ML (2015a) Potential use of isomaltulose to produce healthier marshmallows. LWT-Food Sci Technol 62(1):605–612Periche Á, Castelló ML, Heredia A, Escriche I (2015b) Stevia rebaudiana, Oligofructose and isomaltulose as sugar replacers in Marshmallows: stability and antioxidant properties. J Food Process Preserv. doi: 10.1111/jfpp.12653Petersen-Skytte U (2006) Tagatose. In: Mitchell H (ed) Sweeteners and sugar alternatives in food technology. Blackwell Publishing, Oxford, pp 262–292Pimentel TC, Madrona GS, Prudencio SH (2015) Probiotic clarified apple juice with oligofructose or sucralose as sugar substitutes: sensory profile and acceptability. LWT–Food. Sci Technol 62(1):838–846Rababah TM, Al-Mahasneh MA, Kilani I, Yang W, Alhamad MN, Ereifeja E, Al-U’datta M (2011) Effect of jam processing and storage on total phenolics, antioxidant activity, and anthocyanins of different fruits. J Sci Food Agric 91:1096–1102Rubio-Arraez S, Sahuquillo S, Capella JV, Ortolá MD, Castelló ML (2015) Influence of healthy sweeteners (Tagatose and Oligofructose) on the physicochemical characteristics of orange marmalade. J Texture Stud 46(4):272–280Shahidi F, Liyana-Pathirana CM, Wall DS (2006) Antioxidant activity of white and black sesame seeds and their hull fractions. Food Chem 99(3):478–483Shukla V, Kandra P (2015) Development, physico-chemical and sensory evaluation of natural nutra candy. J Food Sci Tech Mys 52(11):7535–7539Taylor TP, Fasina O, Bell LN (2008) Physical properties and consumer liking of cookies prepared by replacing sucrose with tagatose. J Food Sci 73(3):145–151Van Den Heuvel EGHM, Muys T, Van Dokkum W, Schaafsma G (1999) Oligofructose stimulates calcium absorption in adolescents. Am J Clinic Nutr 69:544–548Vastenavond CM, Bertelsen H, Hansen SJ, Laursen RS, Saunders J, Eriknauer K (2012) Tagatose (D-tagatose). In: Nabors L (ed) Alternative sweeteners. Boca Ratón, Florida, USA, p 197–222Zeng Y, Zhang X, Guan Y, Sun Y (2012) Enzymatic hydrolysates from tuna backbone and the subsequent Maillard reaction with different ketohexoses. Int J Food Sci Technol 47:1293–130

Interim 2017/18 influenza seasonal vaccine effectiveness: Combined results from five European studies

Between September 2017 and February 2018, influenza A(H1N1)pdm09, A(H3N2) and B viruses (mainly B/Yamagata, not included in 2017/18 trivalent vaccines) co-circulated in Europe. Interim results from five European studies indicate that, in all age groups, 2017/18 influenza vaccine effectiveness was 25 to 52% against any influenza, 55 to 68% against influenza A(H1N1)pdm09, -42 to 7% against influenza A(H3N2) and 36 to 54% against influenza B. 2017/18 influenza vaccine should be promoted where influenza still circulates

Global wealth disparities drive adherence to COVID-safe pathways in head and neck cancer surgery

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